F: include/uapi/linux/sched.h
F: include/linux/wait.h
-SCORE ARCHITECTURE
-M: Chen Liqin <liqin.linux@gmail.com>
-M: Lennox Wu <lennox.wu@gmail.com>
-W: http://www.sunplus.com
-S: Supported
-F: arch/score/
-
SCR24X CHIP CARD INTERFACE DRIVER
M: Lubomir Rintel <lkundrak@v3.sk>
S: Supported
+++ /dev/null
-# SPDX-License-Identifier: GPL-2.0
-menu "Machine selection"
-
-config SCORE
- def_bool y
- select GENERIC_IRQ_SHOW
- select GENERIC_IOMAP
- select GENERIC_ATOMIC64
- select HAVE_MEMBLOCK
- select HAVE_MEMBLOCK_NODE_MAP
- select ARCH_DISCARD_MEMBLOCK
- select GENERIC_CPU_DEVICES
- select GENERIC_CLOCKEVENTS
- select HAVE_MOD_ARCH_SPECIFIC
- select VIRT_TO_BUS
- select MODULES_USE_ELF_REL
- select CLONE_BACKWARDS
- select CPU_NO_EFFICIENT_FFS
-
-choice
- prompt "System type"
- default MACH_SPCT6600
-
-config ARCH_SCORE7
- bool "SCORE7 processor"
- select SYS_SUPPORTS_32BIT_KERNEL
-
-config MACH_SPCT6600
- bool "SPCT6600 series based machines"
- select SYS_SUPPORTS_32BIT_KERNEL
-
-config SCORE_SIM
- bool "Score simulator"
- select SYS_SUPPORTS_32BIT_KERNEL
-endchoice
-
-endmenu
-
-config NO_DMA
- bool
- default y
-
-config RWSEM_GENERIC_SPINLOCK
- def_bool y
-
-config GENERIC_HWEIGHT
- def_bool y
-
-config GENERIC_CALIBRATE_DELAY
- def_bool y
-
-menu "Kernel type"
-
-config 32BIT
- def_bool y
-
-config ARCH_FLATMEM_ENABLE
- def_bool y
-
-source "mm/Kconfig"
-
-config MEMORY_START
- hex
- default 0xa0000000
-
-source "kernel/Kconfig.hz"
-source "kernel/Kconfig.preempt"
-
-endmenu
-
-config RWSEM_GENERIC_SPINLOCK
- def_bool y
-
-config LOCKDEP_SUPPORT
- def_bool y
-
-config STACKTRACE_SUPPORT
- def_bool y
-
-source "init/Kconfig"
-
-source "kernel/Kconfig.freezer"
-
-config MMU
- def_bool y
-
-menu "Executable file formats"
-
-source "fs/Kconfig.binfmt"
-
-endmenu
-
-source "net/Kconfig"
-
-source "drivers/Kconfig"
-
-source "fs/Kconfig"
-
-source "arch/score/Kconfig.debug"
-
-source "security/Kconfig"
-
-source "crypto/Kconfig"
-
-source "lib/Kconfig"
-
-config NO_IOMEM
- def_bool y
+++ /dev/null
-# SPDX-License-Identifier: GPL-2.0
-menu "Kernel hacking"
-
-config TRACE_IRQFLAGS_SUPPORT
- bool
- default y
-
-source "lib/Kconfig.debug"
-
-config CMDLINE
- string "Default kernel command string"
- default ""
- help
- On some platforms, there is currently no way for the boot loader to
- pass arguments to the kernel. For these platforms, you can supply
- some command-line options at build time by entering them here. In
- other cases you can specify kernel args so that you don't have
- to set them up in board prom initialization routines.
-
-config RUNTIME_DEBUG
- bool "Enable run-time debugging"
- depends on DEBUG_KERNEL
- help
- If you say Y here, some debugging macros will do run-time checking.
- If you say N here, those macros will mostly turn to no-ops. See
- include/asm-score/debug.h for debugging macros.
- If unsure, say N.
-
-endmenu
+++ /dev/null
-#
-# arch/score/Makefile
-#
-# This file is subject to the terms and conditions of the GNU General Public
-# License. See the file "COPYING" in the main directory of this archive
-# for more details.
-#
-
-KBUILD_DEFCONFIG := spct6600_defconfig
-CROSS_COMPILE := score-linux-
-
-#
-# CPU-dependent compiler/assembler options for optimization.
-#
-cflags-y += -G0 -pipe -mel -mnhwloop -D__SCOREEL__ \
- -D__linux__ -ffunction-sections -ffreestanding
-
-#
-# Board-dependent options and extra files
-#
-KBUILD_AFLAGS += $(cflags-y)
-KBUILD_CFLAGS += $(cflags-y)
-KBUILD_AFLAGS_MODULE +=
-KBUILD_CFLAGS_MODULE +=
-LDFLAGS += --oformat elf32-littlescore
-LDFLAGS_vmlinux += -G0 -static -nostdlib
-
-head-y := arch/score/kernel/head.o
-libs-y += arch/score/lib/
-core-y += arch/score/kernel/ arch/score/mm/
-
-boot := arch/score/boot
-
-vmlinux.bin: vmlinux
- $(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
-
-archclean:
- @$(MAKE) $(clean)=$(boot)
-
-define archhelp
- echo ' vmlinux.bin - Raw binary boot image'
- echo
- echo ' These will be default as appropriate for a configured platform.'
-endef
+++ /dev/null
-#
-# arch/score/boot/Makefile
-#
-# This file is subject to the terms and conditions of the GNU General Public
-# License. See the file "COPYING" in the main directory of this archive
-# for more details.
-#
-
-targets := vmlinux.bin
-
-$(obj)/vmlinux.bin: vmlinux FORCE
- $(call if_changed,objcopy)
- @echo 'Kernel: $@ is ready' ' (#'`cat .version`')'
-
-clean-files += vmlinux.bin
+++ /dev/null
-CONFIG_HZ_100=y
-CONFIG_PREEMPT_VOLUNTARY=y
-CONFIG_EXPERIMENTAL=y
-# CONFIG_LOCALVERSION_AUTO is not set
-CONFIG_SYSVIPC=y
-CONFIG_POSIX_MQUEUE=y
-CONFIG_BSD_PROCESS_ACCT=y
-CONFIG_LOG_BUF_SHIFT=12
-CONFIG_SYSFS_DEPRECATED_V2=y
-CONFIG_BLK_DEV_INITRD=y
-# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
-CONFIG_EXPERT=y
-# CONFIG_KALLSYMS is not set
-# CONFIG_HOTPLUG is not set
-CONFIG_SLAB=y
-CONFIG_MODULES=y
-CONFIG_MODULE_FORCE_LOAD=y
-CONFIG_MODULE_UNLOAD=y
-CONFIG_MODULE_FORCE_UNLOAD=y
-# CONFIG_BLK_DEV_BSG is not set
-CONFIG_BINFMT_MISC=y
-CONFIG_NET=y
-CONFIG_UNIX=y
-CONFIG_NET_KEY=y
-CONFIG_INET=y
-CONFIG_IP_MULTICAST=y
-CONFIG_ARPD=y
-# CONFIG_INET_LRO is not set
-# CONFIG_IPV6 is not set
-# CONFIG_STANDALONE is not set
-# CONFIG_PREVENT_FIRMWARE_BUILD is not set
-CONFIG_BLK_DEV_LOOP=y
-CONFIG_BLK_DEV_CRYPTOLOOP=y
-CONFIG_BLK_DEV_RAM=y
-CONFIG_BLK_DEV_RAM_COUNT=1
-# CONFIG_MISC_DEVICES is not set
-CONFIG_NETDEVICES=y
-# CONFIG_NETDEV_1000 is not set
-# CONFIG_NETDEV_10000 is not set
-# CONFIG_INPUT_MOUSEDEV is not set
-# CONFIG_INPUT_KEYBOARD is not set
-# CONFIG_INPUT_MOUSE is not set
-# CONFIG_SERIO is not set
-CONFIG_SERIAL_NONSTANDARD=y
-CONFIG_STALDRV=y
-# CONFIG_HW_RANDOM is not set
-CONFIG_RAW_DRIVER=y
-CONFIG_MAX_RAW_DEVS=8192
-# CONFIG_HWMON is not set
-# CONFIG_VGA_CONSOLE is not set
-# CONFIG_HID_SUPPORT is not set
-# CONFIG_USB_SUPPORT is not set
-CONFIG_EXT2_FS=y
-CONFIG_EXT2_FS_XATTR=y
-CONFIG_EXT2_FS_POSIX_ACL=y
-CONFIG_EXT3_FS=y
-# CONFIG_EXT3_DEFAULTS_TO_ORDERED is not set
-CONFIG_EXT3_FS_POSIX_ACL=y
-CONFIG_AUTOFS_FS=y
-CONFIG_AUTOFS4_FS=y
-CONFIG_PROC_KCORE=y
-# CONFIG_PROC_PAGE_MONITOR is not set
-CONFIG_TMPFS=y
-CONFIG_TMPFS_POSIX_ACL=y
-CONFIG_NFS_FS=y
-CONFIG_NFS_V3=y
-CONFIG_NFS_V3_ACL=y
-CONFIG_NFS_V4=y
-CONFIG_NFSD=y
-CONFIG_NFSD_V3_ACL=y
-CONFIG_NFSD_V4=y
-# CONFIG_RCU_CPU_STALL_DETECTOR is not set
-CONFIG_SECURITY=y
-CONFIG_SECURITY_NETWORK=y
-CONFIG_CRYPTO_NULL=y
-CONFIG_CRYPTO_CRYPTD=y
-CONFIG_CRYPTO_SEQIV=y
-CONFIG_CRYPTO_MD4=y
-CONFIG_CRYPTO_MICHAEL_MIC=y
-# CONFIG_CRYPTO_ANSI_CPRNG is not set
-# CONFIG_CRYPTO_HW is not set
-CONFIG_CRC_CCITT=y
-CONFIG_CRC16=y
-CONFIG_LIBCRC32C=y
+++ /dev/null
-generic-y += barrier.h
-generic-y += current.h
-generic-y += extable.h
-generic-y += irq_work.h
-generic-y += mcs_spinlock.h
-generic-y += mm-arch-hooks.h
-generic-y += preempt.h
-generic-y += sections.h
-generic-y += trace_clock.h
-generic-y += xor.h
-generic-y += serial.h
-generic-y += word-at-a-time.h
-generic-y += kprobes.h
+++ /dev/null
-#include <generated/asm-offsets.h>
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_ASMMACRO_H
-#define _ASM_SCORE_ASMMACRO_H
-
-#include <asm/asm-offsets.h>
-
-#ifdef __ASSEMBLY__
-
-.macro SAVE_ALL
- mfcr r30, cr0
- mv r31, r0
- nop
- /* if UMs == 1, change stack. */
- slli.c r30, r30, 28
- bpl 1f
- la r31, kernelsp
- lw r31, [r31]
-1:
- mv r30, r0
- addri r0, r31, -PT_SIZE
-
- sw r30, [r0, PT_R0]
- .set r1
- sw r1, [r0, PT_R1]
- .set nor1
- sw r2, [r0, PT_R2]
- sw r3, [r0, PT_R3]
- sw r4, [r0, PT_R4]
- sw r5, [r0, PT_R5]
- sw r6, [r0, PT_R6]
- sw r7, [r0, PT_R7]
-
- sw r8, [r0, PT_R8]
- sw r9, [r0, PT_R9]
- sw r10, [r0, PT_R10]
- sw r11, [r0, PT_R11]
- sw r12, [r0, PT_R12]
- sw r13, [r0, PT_R13]
- sw r14, [r0, PT_R14]
- sw r15, [r0, PT_R15]
-
- sw r16, [r0, PT_R16]
- sw r17, [r0, PT_R17]
- sw r18, [r0, PT_R18]
- sw r19, [r0, PT_R19]
- sw r20, [r0, PT_R20]
- sw r21, [r0, PT_R21]
- sw r22, [r0, PT_R22]
- sw r23, [r0, PT_R23]
-
- sw r24, [r0, PT_R24]
- sw r25, [r0, PT_R25]
- sw r25, [r0, PT_R25]
- sw r26, [r0, PT_R26]
- sw r27, [r0, PT_R27]
-
- sw r28, [r0, PT_R28]
- sw r29, [r0, PT_R29]
- orri r28, r0, 0x1fff
- li r31, 0x00001fff
- xor r28, r28, r31
-
- mfcehl r30, r31
- sw r30, [r0, PT_CEH]
- sw r31, [r0, PT_CEL]
-
- mfcr r31, cr0
- sw r31, [r0, PT_PSR]
-
- mfcr r31, cr1
- sw r31, [r0, PT_CONDITION]
-
- mfcr r31, cr2
- sw r31, [r0, PT_ECR]
-
- mfcr r31, cr5
- srli r31, r31, 1
- slli r31, r31, 1
- sw r31, [r0, PT_EPC]
-.endm
-
-.macro RESTORE_ALL_AND_RET
- mfcr r30, cr0
- srli r30, r30, 1
- slli r30, r30, 1
- mtcr r30, cr0
- nop
- nop
- nop
- nop
- nop
-
- .set r1
- ldis r1, 0x00ff
- and r30, r30, r1
- not r1, r1
- lw r31, [r0, PT_PSR]
- and r31, r31, r1
- .set nor1
- or r31, r31, r30
- mtcr r31, cr0
- nop
- nop
- nop
- nop
- nop
-
- lw r30, [r0, PT_CONDITION]
- mtcr r30, cr1
- nop
- nop
- nop
- nop
- nop
-
- lw r30, [r0, PT_CEH]
- lw r31, [r0, PT_CEL]
- mtcehl r30, r31
-
- .set r1
- lw r1, [r0, PT_R1]
- .set nor1
- lw r2, [r0, PT_R2]
- lw r3, [r0, PT_R3]
- lw r4, [r0, PT_R4]
- lw r5, [r0, PT_R5]
- lw r6, [r0, PT_R6]
- lw r7, [r0, PT_R7]
-
- lw r8, [r0, PT_R8]
- lw r9, [r0, PT_R9]
- lw r10, [r0, PT_R10]
- lw r11, [r0, PT_R11]
- lw r12, [r0, PT_R12]
- lw r13, [r0, PT_R13]
- lw r14, [r0, PT_R14]
- lw r15, [r0, PT_R15]
-
- lw r16, [r0, PT_R16]
- lw r17, [r0, PT_R17]
- lw r18, [r0, PT_R18]
- lw r19, [r0, PT_R19]
- lw r20, [r0, PT_R20]
- lw r21, [r0, PT_R21]
- lw r22, [r0, PT_R22]
- lw r23, [r0, PT_R23]
-
- lw r24, [r0, PT_R24]
- lw r25, [r0, PT_R25]
- lw r26, [r0, PT_R26]
- lw r27, [r0, PT_R27]
- lw r28, [r0, PT_R28]
- lw r29, [r0, PT_R29]
-
- lw r30, [r0, PT_EPC]
- lw r0, [r0, PT_R0]
- mtcr r30, cr5
- rte
-.endm
-
-#endif /* __ASSEMBLY__ */
-#endif /* _ASM_SCORE_ASMMACRO_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_ATOMIC_H
-#define _ASM_SCORE_ATOMIC_H
-
-#include <asm/cmpxchg.h>
-#include <asm-generic/atomic.h>
-
-#endif /* _ASM_SCORE_ATOMIC_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_BITOPS_H
-#define _ASM_SCORE_BITOPS_H
-
-#include <asm/byteorder.h> /* swab32 */
-#include <asm/barrier.h>
-
-#include <asm-generic/bitops.h>
-#include <asm-generic/bitops/__fls.h>
-
-#endif /* _ASM_SCORE_BITOPS_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_BUG_H
-#define _ASM_SCORE_BUG_H
-
-#include <asm-generic/bug.h>
-
-struct pt_regs;
-extern void __die(const char *, struct pt_regs *, const char *,
- const char *, unsigned long) __attribute__((noreturn));
-extern void __die_if_kernel(const char *, struct pt_regs *, const char *,
- const char *, unsigned long);
-
-#define die(msg, regs) \
- __die(msg, regs, __FILE__ ":", __func__, __LINE__)
-#define die_if_kernel(msg, regs) \
- __die_if_kernel(msg, regs, __FILE__ ":", __func__, __LINE__)
-
-#endif /* _ASM_SCORE_BUG_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_BUGS_H
-#define _ASM_SCORE_BUGS_H
-
-#include <asm-generic/bugs.h>
-
-#endif /* _ASM_SCORE_BUGS_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_CACHE_H
-#define _ASM_SCORE_CACHE_H
-
-#define L1_CACHE_SHIFT 4
-#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
-
-#endif /* _ASM_SCORE_CACHE_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_CACHEFLUSH_H
-#define _ASM_SCORE_CACHEFLUSH_H
-
-/* Keep includes the same across arches. */
-#include <linux/mm.h>
-
-extern void flush_cache_all(void);
-extern void flush_cache_mm(struct mm_struct *mm);
-extern void flush_cache_range(struct vm_area_struct *vma,
- unsigned long start, unsigned long end);
-extern void flush_cache_page(struct vm_area_struct *vma,
- unsigned long page, unsigned long pfn);
-extern void flush_cache_sigtramp(unsigned long addr);
-extern void flush_icache_all(void);
-extern void flush_icache_range(unsigned long start, unsigned long end);
-extern void flush_dcache_range(unsigned long start, unsigned long end);
-extern void flush_dcache_page(struct page *page);
-
-#define PG_dcache_dirty PG_arch_1
-
-#define flush_cache_dup_mm(mm) do {} while (0)
-#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0
-#define flush_dcache_mmap_lock(mapping) do {} while (0)
-#define flush_dcache_mmap_unlock(mapping) do {} while (0)
-#define flush_cache_vmap(start, end) do {} while (0)
-#define flush_cache_vunmap(start, end) do {} while (0)
-
-static inline void flush_icache_page(struct vm_area_struct *vma,
- struct page *page)
-{
- if (vma->vm_flags & VM_EXEC) {
- void *v = page_address(page);
- flush_icache_range((unsigned long) v,
- (unsigned long) v + PAGE_SIZE);
- }
-}
-
-#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
- memcpy(dst, src, len)
-
-#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
- do { \
- memcpy(dst, src, len); \
- if ((vma->vm_flags & VM_EXEC)) \
- flush_cache_page(vma, vaddr, page_to_pfn(page));\
- } while (0)
-
-#endif /* _ASM_SCORE_CACHEFLUSH_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_CHECKSUM_H
-#define _ASM_SCORE_CHECKSUM_H
-
-#include <linux/in6.h>
-#include <linux/uaccess.h>
-
-/*
- * computes the checksum of a memory block at buff, length len,
- * and adds in "sum" (32-bit)
- *
- * returns a 32-bit number suitable for feeding into itself
- * or csum_tcpudp_magic
- *
- * this function must be called with even lengths, except
- * for the last fragment, which may be odd
- *
- * it's best to have buff aligned on a 32-bit boundary
- */
-unsigned int csum_partial(const void *buff, int len, __wsum sum);
-unsigned int csum_partial_copy_from_user(const char *src, char *dst, int len,
- unsigned int sum, int *csum_err);
-unsigned int csum_partial_copy(const char *src, char *dst,
- int len, unsigned int sum);
-
-/*
- * this is a new version of the above that records errors it finds in *errp,
- * but continues and zeros the rest of the buffer.
- */
-
-/*
- * Copy and checksum to user
- */
-#define HAVE_CSUM_COPY_USER
-static inline
-__wsum csum_and_copy_to_user(const void *src, void __user *dst, int len,
- __wsum sum, int *err_ptr)
-{
- sum = csum_partial(src, len, sum);
- if (copy_to_user(dst, src, len)) {
- *err_ptr = -EFAULT;
- return (__force __wsum) -1; /* invalid checksum */
- }
- return sum;
-}
-
-
-#define csum_partial_copy_nocheck csum_partial_copy
-/*
- * Fold a partial checksum without adding pseudo headers
- */
-
-static inline __sum16 csum_fold(__wsum sum)
-{
- /* the while loop is unnecessary really, it's always enough with two
- iterations */
- __asm__ __volatile__(
- ".set volatile\n\t"
- ".set\tr1\n\t"
- "slli\tr1,%0, 16\n\t"
- "add\t%0,%0, r1\n\t"
- "cmp.c\tr1, %0\n\t"
- "srli\t%0, %0, 16\n\t"
- "bleu\t1f\n\t"
- "addi\t%0, 0x1\n\t"
- "1:ldi\tr30, 0xffff\n\t"
- "xor\t%0, %0, r30\n\t"
- "slli\t%0, %0, 16\n\t"
- "srli\t%0, %0, 16\n\t"
- ".set\tnor1\n\t"
- ".set optimize\n\t"
- : "=r" (sum)
- : "0" (sum));
- return sum;
-}
-
-/*
- * This is a version of ip_compute_csum() optimized for IP headers,
- * which always checksum on 4 octet boundaries.
- *
- * By Jorge Cwik <jorge@laser.satlink.net>, adapted for linux by
- * Arnt Gulbrandsen.
- */
-static inline __sum16 ip_fast_csum(const void *iph, unsigned int ihl)
-{
- unsigned int sum;
- unsigned long dummy;
-
- __asm__ __volatile__(
- ".set volatile\n\t"
- ".set\tnor1\n\t"
- "lw\t%0, [%1]\n\t"
- "subri\t%2, %2, 4\n\t"
- "slli\t%2, %2, 2\n\t"
- "lw\t%3, [%1, 4]\n\t"
- "add\t%2, %2, %1\n\t"
- "add\t%0, %0, %3\n\t"
- "cmp.c\t%3, %0\n\t"
- "lw\t%3, [%1, 8]\n\t"
- "bleu\t1f\n\t"
- "addi\t%0, 0x1\n\t"
- "1:\n\t"
- "add\t%0, %0, %3\n\t"
- "cmp.c\t%3, %0\n\t"
- "lw\t%3, [%1, 12]\n\t"
- "bleu\t1f\n\t"
- "addi\t%0, 0x1\n\t"
- "1:add\t%0, %0, %3\n\t"
- "cmp.c\t%3, %0\n\t"
- "bleu\t1f\n\t"
- "addi\t%0, 0x1\n"
-
- "1:\tlw\t%3, [%1, 16]\n\t"
- "addi\t%1, 4\n\t"
- "add\t%0, %0, %3\n\t"
- "cmp.c\t%3, %0\n\t"
- "bleu\t2f\n\t"
- "addi\t%0, 0x1\n"
- "2:cmp.c\t%2, %1\n\t"
- "bne\t1b\n\t"
-
- ".set\tr1\n\t"
- ".set optimize\n\t"
- : "=&r" (sum), "=&r" (iph), "=&r" (ihl), "=&r" (dummy)
- : "1" (iph), "2" (ihl));
-
- return csum_fold(sum);
-}
-
-static inline __wsum
-csum_tcpudp_nofold(__be32 saddr, __be32 daddr, __u32 len,
- __u8 proto, __wsum sum)
-{
- unsigned long tmp = (len + proto) << 8;
- __asm__ __volatile__(
- ".set volatile\n\t"
- "add\t%0, %0, %2\n\t"
- "cmp.c\t%2, %0\n\t"
- "bleu\t1f\n\t"
- "addi\t%0, 0x1\n\t"
- "1:\n\t"
- "add\t%0, %0, %3\n\t"
- "cmp.c\t%3, %0\n\t"
- "bleu\t1f\n\t"
- "addi\t%0, 0x1\n\t"
- "1:\n\t"
- "add\t%0, %0, %4\n\t"
- "cmp.c\t%4, %0\n\t"
- "bleu\t1f\n\t"
- "addi\t%0, 0x1\n\t"
- "1:\n\t"
- ".set optimize\n\t"
- : "=r" (sum)
- : "0" (daddr), "r"(saddr),
- "r" (tmp),
- "r" (sum));
- return sum;
-}
-
-/*
- * computes the checksum of the TCP/UDP pseudo-header
- * returns a 16-bit checksum, already complemented
- */
-static inline __sum16
-csum_tcpudp_magic(__be32 saddr, __be32 daddr, __u32 len,
- __u8 proto, __wsum sum)
-{
- return csum_fold(csum_tcpudp_nofold(saddr, daddr, len, proto, sum));
-}
-
-/*
- * this routine is used for miscellaneous IP-like checksums, mainly
- * in icmp.c
- */
-
-static inline unsigned short ip_compute_csum(const void *buff, int len)
-{
- return csum_fold(csum_partial(buff, len, 0));
-}
-
-#define _HAVE_ARCH_IPV6_CSUM
-static inline __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
- const struct in6_addr *daddr,
- __u32 len, __u8 proto, __wsum sum)
-{
- __asm__ __volatile__(
- ".set\tvolatile\t\t\t# csum_ipv6_magic\n\t"
- "add\t%0, %0, %5\t\t\t# proto (long in network byte order)\n\t"
- "cmp.c\t%5, %0\n\t"
- "bleu 1f\n\t"
- "addi\t%0, 0x1\n\t"
- "1:add\t%0, %0, %6\t\t\t# csum\n\t"
- "cmp.c\t%6, %0\n\t"
- "lw\t%1, [%2, 0]\t\t\t# four words source address\n\t"
- "bleu 1f\n\t"
- "addi\t%0, 0x1\n\t"
- "1:add\t%0, %0, %1\n\t"
- "cmp.c\t%1, %0\n\t"
- "1:lw\t%1, [%2, 4]\n\t"
- "bleu 1f\n\t"
- "addi\t%0, 0x1\n\t"
- "1:add\t%0, %0, %1\n\t"
- "cmp.c\t%1, %0\n\t"
- "lw\t%1, [%2,8]\n\t"
- "bleu 1f\n\t"
- "addi\t%0, 0x1\n\t"
- "1:add\t%0, %0, %1\n\t"
- "cmp.c\t%1, %0\n\t"
- "lw\t%1, [%2, 12]\n\t"
- "bleu 1f\n\t"
- "addi\t%0, 0x1\n\t"
- "1:add\t%0, %0,%1\n\t"
- "cmp.c\t%1, %0\n\t"
- "lw\t%1, [%3, 0]\n\t"
- "bleu 1f\n\t"
- "addi\t%0, 0x1\n\t"
- "1:add\t%0, %0, %1\n\t"
- "cmp.c\t%1, %0\n\t"
- "lw\t%1, [%3, 4]\n\t"
- "bleu 1f\n\t"
- "addi\t%0, 0x1\n\t"
- "1:add\t%0, %0, %1\n\t"
- "cmp.c\t%1, %0\n\t"
- "lw\t%1, [%3, 8]\n\t"
- "bleu 1f\n\t"
- "addi\t%0, 0x1\n\t"
- "1:add\t%0, %0, %1\n\t"
- "cmp.c\t%1, %0\n\t"
- "lw\t%1, [%3, 12]\n\t"
- "bleu 1f\n\t"
- "addi\t%0, 0x1\n\t"
- "1:add\t%0, %0, %1\n\t"
- "cmp.c\t%1, %0\n\t"
- "bleu 1f\n\t"
- "addi\t%0, 0x1\n\t"
- "1:\n\t"
- ".set\toptimize"
- : "=r" (sum), "=r" (proto)
- : "r" (saddr), "r" (daddr),
- "0" (htonl(len)), "1" (htonl(proto)), "r" (sum));
-
- return csum_fold(sum);
-}
-#endif /* _ASM_SCORE_CHECKSUM_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_CMPXCHG_H
-#define _ASM_SCORE_CMPXCHG_H
-
-#include <linux/irqflags.h>
-
-struct __xchg_dummy { unsigned long a[100]; };
-#define __xg(x) ((struct __xchg_dummy *)(x))
-
-static inline
-unsigned long __xchg(volatile unsigned long *m, unsigned long val)
-{
- unsigned long retval;
- unsigned long flags;
-
- local_irq_save(flags);
- retval = *m;
- *m = val;
- local_irq_restore(flags);
- return retval;
-}
-
-#define xchg(ptr, v) \
- ((__typeof__(*(ptr))) __xchg((unsigned long *)(ptr), \
- (unsigned long)(v)))
-
-static inline unsigned long __cmpxchg(volatile unsigned long *m,
- unsigned long old, unsigned long new)
-{
- unsigned long retval;
- unsigned long flags;
-
- local_irq_save(flags);
- retval = *m;
- if (retval == old)
- *m = new;
- local_irq_restore(flags);
- return retval;
-}
-
-#define cmpxchg(ptr, o, n) \
- ((__typeof__(*(ptr))) __cmpxchg((unsigned long *)(ptr), \
- (unsigned long)(o), \
- (unsigned long)(n)))
-
-#include <asm-generic/cmpxchg-local.h>
-
-#endif /* _ASM_SCORE_CMPXCHG_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_DELAY_H
-#define _ASM_SCORE_DELAY_H
-
-#include <asm-generic/param.h>
-
-static inline void __delay(unsigned long loops)
-{
- /* 3 cycles per loop. */
- __asm__ __volatile__ (
- "1:\tsubi\t%0, 3\n\t"
- "cmpz.c\t%0\n\t"
- "ble\t1b\n\t"
- : "=r" (loops)
- : "0" (loops));
-}
-
-static inline void __udelay(unsigned long usecs)
-{
- unsigned long loops_per_usec;
-
- loops_per_usec = (loops_per_jiffy * HZ) / 1000000;
-
- __delay(usecs * loops_per_usec);
-}
-
-#define udelay(usecs) __udelay(usecs)
-
-#endif /* _ASM_SCORE_DELAY_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_DEVICE_H
-#define _ASM_SCORE_DEVICE_H
-
-#include <asm-generic/device.h>
-
-#endif /* _ASM_SCORE_DEVICE_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_DIV64_H
-#define _ASM_SCORE_DIV64_H
-
-#include <asm-generic/div64.h>
-
-#endif /* _ASM_SCORE_DIV64_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_DMA_H
-#define _ASM_SCORE_DMA_H
-
-#include <asm/io.h>
-
-#define MAX_DMA_ADDRESS (0)
-
-#endif /* _ASM_SCORE_DMA_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_ELF_H
-#define _ASM_SCORE_ELF_H
-
-#include <linux/ptrace.h>
-
-#define EM_SCORE7 135
-
-/* Relocation types. */
-#define R_SCORE_NONE 0
-#define R_SCORE_HI16 1
-#define R_SCORE_LO16 2
-#define R_SCORE_BCMP 3
-#define R_SCORE_24 4
-#define R_SCORE_PC19 5
-#define R_SCORE16_11 6
-#define R_SCORE16_PC8 7
-#define R_SCORE_ABS32 8
-#define R_SCORE_ABS16 9
-#define R_SCORE_DUMMY2 10
-#define R_SCORE_GP15 11
-#define R_SCORE_GNU_VTINHERIT 12
-#define R_SCORE_GNU_VTENTRY 13
-#define R_SCORE_GOT15 14
-#define R_SCORE_GOT_LO16 15
-#define R_SCORE_CALL15 16
-#define R_SCORE_GPREL32 17
-#define R_SCORE_REL32 18
-#define R_SCORE_DUMMY_HI16 19
-#define R_SCORE_IMM30 20
-#define R_SCORE_IMM32 21
-
-/* ELF register definitions */
-typedef unsigned long elf_greg_t;
-
-#define ELF_NGREG (sizeof(struct pt_regs) / sizeof(elf_greg_t))
-typedef elf_greg_t elf_gregset_t[ELF_NGREG];
-
-/* Score does not have fp regs. */
-typedef double elf_fpreg_t;
-typedef elf_fpreg_t elf_fpregset_t;
-
-#define elf_check_arch(x) ((x)->e_machine == EM_SCORE7)
-
-/*
- * These are used to set parameters in the core dumps.
- */
-#define ELF_CLASS ELFCLASS32
-
-/*
- * These are used to set parameters in the core dumps.
- */
-#define ELF_DATA ELFDATA2LSB
-#define ELF_ARCH EM_SCORE7
-
-struct task_struct;
-struct pt_regs;
-
-#define CORE_DUMP_USE_REGSET
-#define ELF_EXEC_PAGESIZE PAGE_SIZE
-
-/* This yields a mask that user programs can use to figure out what
- instruction set this cpu supports. This could be done in userspace,
- but it's not easy, and we've already done it here. */
-
-#define ELF_HWCAP (0)
-
-/* This yields a string that ld.so will use to load implementation
- specific libraries for optimization. This is more specific in
- intent than poking at uname or /proc/cpuinfo.
-
- For the moment, we have only optimizations for the Intel generations,
- but that could change... */
-
-#define ELF_PLATFORM (NULL)
-
-#define ELF_PLAT_INIT(_r, load_addr) \
-do { \
- _r->regs[1] = _r->regs[2] = _r->regs[3] = _r->regs[4] = 0; \
- _r->regs[5] = _r->regs[6] = _r->regs[7] = _r->regs[8] = 0; \
- _r->regs[9] = _r->regs[10] = _r->regs[11] = _r->regs[12] = 0; \
- _r->regs[13] = _r->regs[14] = _r->regs[15] = _r->regs[16] = 0; \
- _r->regs[17] = _r->regs[18] = _r->regs[19] = _r->regs[20] = 0; \
- _r->regs[21] = _r->regs[22] = _r->regs[23] = _r->regs[24] = 0; \
- _r->regs[25] = _r->regs[26] = _r->regs[27] = _r->regs[28] = 0; \
- _r->regs[30] = _r->regs[31] = 0; \
-} while (0)
-
-/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
- use of this is to invoke "./ld.so someprog" to test out a new version of
- the loader. We need to make sure that it is out of the way of the program
- that it will "exec", and that there is sufficient room for the brk. */
-
-#ifndef ELF_ET_DYN_BASE
-#define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2)
-#endif
-
-#endif /* _ASM_SCORE_ELF_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_EMERGENCY_RESTART_H
-#define _ASM_SCORE_EMERGENCY_RESTART_H
-
-#include <asm-generic/emergency-restart.h>
-
-#endif /* _ASM_SCORE_EMERGENCY_RESTART_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_EXEC_H
-#define _ASM_SCORE_EXEC_H
-
-extern unsigned long arch_align_stack(unsigned long sp);
-
-#endif /* _ASM_SCORE_EXEC_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_FIXMAP_H
-#define _ASM_SCORE_FIXMAP_H
-
-#include <asm/page.h>
-
-#define PHY_RAM_BASE 0x00000000
-#define PHY_IO_BASE 0x10000000
-
-#define VIRTUAL_RAM_BASE 0xa0000000
-#define VIRTUAL_IO_BASE 0xb0000000
-
-#define RAM_SPACE_SIZE 0x10000000
-#define IO_SPACE_SIZE 0x10000000
-
-/* Kernel unmapped, cached 512MB */
-#define KSEG1 0xa0000000
-
-/*
- * Here we define all the compile-time 'special' virtual
- * addresses. The point is to have a constant address at
- * compile time, but to set the physical address only
- * in the boot process. We allocate these special addresses
- * from the end of virtual memory (0xfffff000) backwards.
- * Also this lets us do fail-safe vmalloc(), we
- * can guarantee that these special addresses and
- * vmalloc()-ed addresses never overlap.
- *
- * these 'compile-time allocated' memory buffers are
- * fixed-size 4k pages. (or larger if used with an increment
- * highger than 1) use fixmap_set(idx,phys) to associate
- * physical memory with fixmap indices.
- *
- * TLB entries of such buffers will not be flushed across
- * task switches.
- */
-
-/*
- * on UP currently we will have no trace of the fixmap mechanizm,
- * no page table allocations, etc. This might change in the
- * future, say framebuffers for the console driver(s) could be
- * fix-mapped?
- */
-enum fixed_addresses {
-#define FIX_N_COLOURS 8
- FIX_CMAP_BEGIN,
- FIX_CMAP_END = FIX_CMAP_BEGIN + FIX_N_COLOURS,
- __end_of_fixed_addresses
-};
-
-/*
- * used by vmalloc.c.
- *
- * Leave one empty page between vmalloc'ed areas and
- * the start of the fixmap, and leave one page empty
- * at the top of mem..
- */
-#define FIXADDR_TOP ((unsigned long)(long)(int)0xfefe0000)
-#define FIXADDR_SIZE (__end_of_fixed_addresses << PAGE_SHIFT)
-#define FIXADDR_START (FIXADDR_TOP - FIXADDR_SIZE)
-
-#define __fix_to_virt(x) (FIXADDR_TOP - ((x) << PAGE_SHIFT))
-#define __virt_to_fix(x) \
- ((FIXADDR_TOP - ((x) & PAGE_MASK)) >> PAGE_SHIFT)
-
-extern void __this_fixmap_does_not_exist(void);
-
-/*
- * 'index to address' translation. If anyone tries to use the idx
- * directly without tranlation, we catch the bug with a NULL-deference
- * kernel oops. Illegal ranges of incoming indices are caught too.
- */
-static inline unsigned long fix_to_virt(const unsigned int idx)
-{
- return __fix_to_virt(idx);
-}
-
-static inline unsigned long virt_to_fix(const unsigned long vaddr)
-{
- return __virt_to_fix(vaddr);
-}
-
-#endif /* _ASM_SCORE_FIXMAP_H */
+++ /dev/null
-#ifndef _ASM_SCORE_FTRACE_H
-#define _ASM_SCORE_FTRACE_H
-
-#endif /* _ASM_SCORE_FTRACE_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_FUTEX_H
-#define _ASM_SCORE_FUTEX_H
-
-#include <asm-generic/futex.h>
-
-#endif /* _ASM_SCORE_FUTEX_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_HARDIRQ_H
-#define _ASM_SCORE_HARDIRQ_H
-
-#include <asm-generic/hardirq.h>
-
-#endif /* _ASM_SCORE_HARDIRQ_H */
+++ /dev/null
-#ifndef _ASM_SCORE_HW_IRQ_H
-#define _ASM_SCORE_HW_IRQ_H
-
-#endif /* _ASM_SCORE_HW_IRQ_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_IO_H
-#define _ASM_SCORE_IO_H
-
-#include <asm-generic/io.h>
-
-#define virt_to_bus virt_to_phys
-#define bus_to_virt phys_to_virt
-#endif /* _ASM_SCORE_IO_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_IRQ_H
-#define _ASM_SCORE_IRQ_H
-
-#define EXCEPTION_VECTOR_BASE_ADDR 0xa0000000
-#define VECTOR_ADDRESS_OFFSET_MODE4 0
-#define VECTOR_ADDRESS_OFFSET_MODE16 1
-
-#define DEBUG_VECTOR_SIZE (0x4)
-#define DEBUG_VECTOR_BASE_ADDR ((EXCEPTION_VECTOR_BASE_ADDR) + 0x1fc)
-
-#define GENERAL_VECTOR_SIZE (0x10)
-#define GENERAL_VECTOR_BASE_ADDR ((EXCEPTION_VECTOR_BASE_ADDR) + 0x200)
-
-#define NR_IRQS 64
-#define IRQ_VECTOR_SIZE (0x10)
-#define IRQ_VECTOR_BASE_ADDR ((EXCEPTION_VECTOR_BASE_ADDR) + 0x210)
-#define IRQ_VECTOR_END_ADDR ((EXCEPTION_VECTOR_BASE_ADDR) + 0x5f0)
-
-#define irq_canonicalize(irq) (irq)
-
-#define IRQ_TIMER (7) /* Timer IRQ number of SPCT6600 */
-
-extern void interrupt_exception_vector(void);
-
-#endif /* _ASM_SCORE_IRQ_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_IRQ_REGS_H
-#define _ASM_SCORE_IRQ_REGS_H
-
-#include <linux/thread_info.h>
-
-static inline struct pt_regs *get_irq_regs(void)
-{
- return current_thread_info()->regs;
-}
-
-#endif /* _ASM_SCORE_IRQ_REGS_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_IRQFLAGS_H
-#define _ASM_SCORE_IRQFLAGS_H
-
-#ifndef __ASSEMBLY__
-
-#include <linux/types.h>
-
-static inline unsigned long arch_local_save_flags(void)
-{
- unsigned long flags;
-
- asm volatile(
- " mfcr r8, cr0 \n"
- " nop \n"
- " nop \n"
- " mv %0, r8 \n"
- " nop \n"
- " nop \n"
- " nop \n"
- " nop \n"
- " nop \n"
- " ldi r9, 0x1 \n"
- " and %0, %0, r9 \n"
- : "=r" (flags)
- :
- : "r8", "r9");
- return flags;
-}
-
-static inline unsigned long arch_local_irq_save(void)
-{
- unsigned long flags;
-
- asm volatile(
- " mfcr r8, cr0 \n"
- " li r9, 0xfffffffe \n"
- " nop \n"
- " mv %0, r8 \n"
- " and r8, r8, r9 \n"
- " mtcr r8, cr0 \n"
- " nop \n"
- " nop \n"
- " nop \n"
- " nop \n"
- " nop \n"
- : "=r" (flags)
- :
- : "r8", "r9", "memory");
-
- return flags;
-}
-
-static inline void arch_local_irq_restore(unsigned long flags)
-{
- asm volatile(
- " mfcr r8, cr0 \n"
- " ldi r9, 0x1 \n"
- " and %0, %0, r9 \n"
- " or r8, r8, %0 \n"
- " mtcr r8, cr0 \n"
- " nop \n"
- " nop \n"
- " nop \n"
- " nop \n"
- " nop \n"
- :
- : "r"(flags)
- : "r8", "r9", "memory");
-}
-
-static inline void arch_local_irq_enable(void)
-{
- asm volatile(
- " mfcr r8,cr0 \n"
- " nop \n"
- " nop \n"
- " ori r8,0x1 \n"
- " mtcr r8,cr0 \n"
- " nop \n"
- " nop \n"
- " nop \n"
- " nop \n"
- " nop \n"
- :
- :
- : "r8", "memory");
-}
-
-static inline void arch_local_irq_disable(void)
-{
- asm volatile(
- " mfcr r8,cr0 \n"
- " nop \n"
- " nop \n"
- " srli r8,r8,1 \n"
- " slli r8,r8,1 \n"
- " mtcr r8,cr0 \n"
- " nop \n"
- " nop \n"
- " nop \n"
- " nop \n"
- " nop \n"
- :
- :
- : "r8", "memory");
-}
-
-static inline bool arch_irqs_disabled_flags(unsigned long flags)
-{
- return !(flags & 1);
-}
-
-static inline bool arch_irqs_disabled(void)
-{
- return arch_irqs_disabled_flags(arch_local_save_flags());
-}
-
-#endif /* __ASSEMBLY__ */
-
-#endif /* _ASM_SCORE_IRQFLAGS_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_KDEBUG_H
-#define _ASM_SCORE_KDEBUG_H
-
-#include <asm-generic/kdebug.h>
-
-#endif /* _ASM_SCORE_KDEBUG_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_KMAP_TYPES_H
-#define _ASM_SCORE_KMAP_TYPES_H
-
-#include <asm-generic/kmap_types.h>
-
-#endif /* _ASM_SCORE_KMAP_TYPES_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_LINKAGE_H
-#define _ASM_SCORE_LINKAGE_H
-
-#define __ALIGN .align 2
-#define __ALIGN_STR ".align 2"
-
-#endif /* _ASM_SCORE_LINKAGE_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_LOCAL_H
-#define _ASM_SCORE_LOCAL_H
-
-#include <asm-generic/local.h>
-
-#endif /* _ASM_SCORE_LOCAL_H */
+++ /dev/null
-#include <asm-generic/local64.h>
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_MMU_H
-#define _ASM_SCORE_MMU_H
-
-typedef unsigned long mm_context_t;
-
-#endif /* _ASM_SCORE_MMU_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_MMU_CONTEXT_H
-#define _ASM_SCORE_MMU_CONTEXT_H
-
-#include <linux/errno.h>
-#include <linux/sched.h>
-#include <linux/mm_types.h>
-#include <linux/slab.h>
-
-#include <asm-generic/mm_hooks.h>
-
-#include <asm/cacheflush.h>
-#include <asm/tlbflush.h>
-#include <asm/scoreregs.h>
-
-/*
- * For the fast tlb miss handlers, we keep a per cpu array of pointers
- * to the current pgd for each processor. Also, the proc. id is stuffed
- * into the context register.
- */
-extern unsigned long asid_cache;
-extern unsigned long pgd_current;
-
-#define TLBMISS_HANDLER_SETUP_PGD(pgd) (pgd_current = (unsigned long)(pgd))
-
-#define TLBMISS_HANDLER_SETUP() \
-do { \
- write_c0_context(0); \
- TLBMISS_HANDLER_SETUP_PGD(swapper_pg_dir) \
-} while (0)
-
-/*
- * All unused by hardware upper bits will be considered
- * as a software asid extension.
- */
-#define ASID_VERSION_MASK 0xfffff000
-#define ASID_FIRST_VERSION 0x1000
-
-/* PEVN --------- VPN ---------- --ASID--- -NA- */
-/* binary: 0000 0000 0000 0000 0000 0000 0001 0000 */
-/* binary: 0000 0000 0000 0000 0000 1111 1111 0000 */
-#define ASID_INC 0x10
-#define ASID_MASK 0xff0
-
-static inline void enter_lazy_tlb(struct mm_struct *mm,
- struct task_struct *tsk)
-{}
-
-static inline void
-get_new_mmu_context(struct mm_struct *mm)
-{
- unsigned long asid = asid_cache + ASID_INC;
-
- if (!(asid & ASID_MASK)) {
- local_flush_tlb_all(); /* start new asid cycle */
- if (!asid) /* fix version if needed */
- asid = ASID_FIRST_VERSION;
- }
-
- mm->context = asid;
- asid_cache = asid;
-}
-
-/*
- * Initialize the context related info for a new mm_struct
- * instance.
- */
-static inline int
-init_new_context(struct task_struct *tsk, struct mm_struct *mm)
-{
- mm->context = 0;
- return 0;
-}
-
-static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
- struct task_struct *tsk)
-{
- unsigned long flags;
-
- local_irq_save(flags);
- if ((next->context ^ asid_cache) & ASID_VERSION_MASK)
- get_new_mmu_context(next);
-
- pevn_set(next->context);
- TLBMISS_HANDLER_SETUP_PGD(next->pgd);
- local_irq_restore(flags);
-}
-
-/*
- * Destroy context related info for an mm_struct that is about
- * to be put to rest.
- */
-static inline void destroy_context(struct mm_struct *mm)
-{}
-
-static inline void
-deactivate_mm(struct task_struct *task, struct mm_struct *mm)
-{}
-
-/*
- * After we have set current->mm to a new value, this activates
- * the context for the new mm so we see the new mappings.
- */
-static inline void
-activate_mm(struct mm_struct *prev, struct mm_struct *next)
-{
- unsigned long flags;
-
- local_irq_save(flags);
- get_new_mmu_context(next);
- pevn_set(next->context);
- TLBMISS_HANDLER_SETUP_PGD(next->pgd);
- local_irq_restore(flags);
-}
-
-#endif /* _ASM_SCORE_MMU_CONTEXT_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_MODULE_H
-#define _ASM_SCORE_MODULE_H
-
-#include <linux/list.h>
-#include <asm/extable.h>
-#include <asm-generic/module.h>
-
-struct mod_arch_specific {
- /* Data Bus Error exception tables */
- struct list_head dbe_list;
- const struct exception_table_entry *dbe_start;
- const struct exception_table_entry *dbe_end;
-};
-
-typedef uint8_t Elf64_Byte; /* Type for a 8-bit quantity. */
-
-/* Given an address, look for it in the exception tables. */
-#ifdef CONFIG_MODULES
-const struct exception_table_entry *search_module_dbetables(unsigned long addr);
-#else
-static inline const struct exception_table_entry
-*search_module_dbetables(unsigned long addr)
-{
- return NULL;
-}
-#endif
-
-#define MODULE_PROC_FAMILY "SCORE7"
-#define MODULE_KERNEL_TYPE "32BIT "
-#define MODULE_KERNEL_SMTC ""
-
-#define MODULE_ARCH_VERMAGIC \
- MODULE_PROC_FAMILY MODULE_KERNEL_TYPE MODULE_KERNEL_SMTC
-
-#endif /* _ASM_SCORE_MODULE_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_PAGE_H
-#define _ASM_SCORE_PAGE_H
-
-#include <linux/pfn.h>
-#include <linux/const.h>
-
-/* PAGE_SHIFT determines the page size */
-#define PAGE_SHIFT (12)
-#define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT)
-#define PAGE_MASK (~(PAGE_SIZE-1))
-
-#ifdef __KERNEL__
-
-#ifndef __ASSEMBLY__
-
-#define PAGE_UP(addr) (((addr)+((PAGE_SIZE)-1))&(~((PAGE_SIZE)-1)))
-#define PAGE_DOWN(addr) ((addr)&(~((PAGE_SIZE)-1)))
-
-/* align addr on a size boundary - adjust address up/down if needed */
-#define _ALIGN_UP(addr, size) (((addr)+((size)-1))&(~((size)-1)))
-#define _ALIGN_DOWN(addr, size) ((addr)&(~((size)-1)))
-
-/* align addr on a size boundary - adjust address up if needed */
-#define _ALIGN(addr, size) _ALIGN_UP(addr, size)
-
-/*
- * PAGE_OFFSET -- the first address of the first page of memory. When not
- * using MMU this corresponds to the first free page in physical memory (aligned
- * on a page boundary).
- */
-#define PAGE_OFFSET (0xA0000000UL)
-
-#define clear_page(pgaddr) memset((pgaddr), 0, PAGE_SIZE)
-#define copy_page(to, from) memcpy((to), (from), PAGE_SIZE)
-
-#define clear_user_page(pgaddr, vaddr, page) memset((pgaddr), 0, PAGE_SIZE)
-#define copy_user_page(vto, vfrom, vaddr, topg) \
- memcpy((vto), (vfrom), PAGE_SIZE)
-
-/*
- * These are used to make use of C type-checking..
- */
-
-typedef struct { unsigned long pte; } pte_t; /* page table entry */
-typedef struct { unsigned long pgd; } pgd_t; /* PGD table entry */
-typedef struct { unsigned long pgprot; } pgprot_t;
-typedef struct page *pgtable_t;
-
-#define pte_val(x) ((x).pte)
-#define pgd_val(x) ((x).pgd)
-#define pgprot_val(x) ((x).pgprot)
-
-#define __pte(x) ((pte_t) { (x) })
-#define __pgd(x) ((pgd_t) { (x) })
-#define __pgprot(x) ((pgprot_t) { (x) })
-
-extern unsigned long max_low_pfn;
-extern unsigned long min_low_pfn;
-extern unsigned long max_pfn;
-
-#define __pa(x) ((unsigned long)(x) - PAGE_OFFSET)
-#define __va(x) ((void *)((unsigned long) (x) + PAGE_OFFSET))
-
-#define phys_to_pfn(phys) (PFN_DOWN(phys))
-#define pfn_to_phys(pfn) (PFN_PHYS(pfn))
-
-#define virt_to_pfn(vaddr) (phys_to_pfn((__pa(vaddr))))
-#define pfn_to_virt(pfn) __va(pfn_to_phys((pfn)))
-
-#define virt_to_page(vaddr) (pfn_to_page(virt_to_pfn(vaddr)))
-#define page_to_virt(page) (pfn_to_virt(page_to_pfn(page)))
-
-#define page_to_phys(page) (pfn_to_phys(page_to_pfn(page)))
-#define page_to_bus(page) (page_to_phys(page))
-#define phys_to_page(paddr) (pfn_to_page(phys_to_pfn(paddr)))
-
-#define pfn_valid(pfn) (((pfn) >= min_low_pfn) && ((pfn) < max_low_pfn))
-
-#define ARCH_PFN_OFFSET (PAGE_OFFSET >> PAGE_SHIFT)
-
-#endif /* __ASSEMBLY__ */
-
-#define virt_addr_valid(vaddr) (pfn_valid(virt_to_pfn(vaddr)))
-
-#endif /* __KERNEL__ */
-
-#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_EXEC | \
- VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
-
-#include <asm-generic/memory_model.h>
-#include <asm-generic/getorder.h>
-
-#endif /* _ASM_SCORE_PAGE_H */
+++ /dev/null
-#ifndef _ASM_SCORE_PCI_H
-#define _ASM_SCORE_PCI_H
-
-#endif /* _ASM_SCORE_PCI_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_PERCPU_H
-#define _ASM_SCORE_PERCPU_H
-
-#include <asm-generic/percpu.h>
-
-#endif /* _ASM_SCORE_PERCPU_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_PGALLOC_H
-#define _ASM_SCORE_PGALLOC_H
-
-#include <linux/mm.h>
-#include <linux/highmem.h>
-static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd,
- pte_t *pte)
-{
- set_pmd(pmd, __pmd((unsigned long)pte));
-}
-
-static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
- pgtable_t pte)
-{
- set_pmd(pmd, __pmd((unsigned long)page_address(pte)));
-}
-
-#define pmd_pgtable(pmd) pmd_page(pmd)
-
-static inline pgd_t *pgd_alloc(struct mm_struct *mm)
-{
- pgd_t *ret, *init;
-
- ret = (pgd_t *) __get_free_pages(GFP_KERNEL, PGD_ORDER);
- if (ret) {
- init = pgd_offset(&init_mm, 0UL);
- pgd_init((unsigned long)ret);
- memcpy(ret + USER_PTRS_PER_PGD, init + USER_PTRS_PER_PGD,
- (PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t));
- }
-
- return ret;
-}
-
-static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
-{
- free_pages((unsigned long)pgd, PGD_ORDER);
-}
-
-static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
- unsigned long address)
-{
- pte_t *pte;
-
- pte = (pte_t *) __get_free_pages(GFP_KERNEL|__GFP_ZERO, PTE_ORDER);
-
- return pte;
-}
-
-static inline struct page *pte_alloc_one(struct mm_struct *mm,
- unsigned long address)
-{
- struct page *pte;
-
- pte = alloc_pages(GFP_KERNEL, PTE_ORDER);
- if (!pte)
- return NULL;
- clear_highpage(pte);
- if (!pgtable_page_ctor(pte)) {
- __free_page(pte);
- return NULL;
- }
- return pte;
-}
-
-static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
-{
- free_pages((unsigned long)pte, PTE_ORDER);
-}
-
-static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
-{
- pgtable_page_dtor(pte);
- __free_pages(pte, PTE_ORDER);
-}
-
-#define __pte_free_tlb(tlb, pte, buf) \
-do { \
- pgtable_page_dtor(pte); \
- tlb_remove_page((tlb), pte); \
-} while (0)
-
-#define check_pgt_cache() do {} while (0)
-
-#endif /* _ASM_SCORE_PGALLOC_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_PGTABLE_BITS_H
-#define _ASM_SCORE_PGTABLE_BITS_H
-
-#define _PAGE_ACCESSED (1<<5) /* implemented in software */
-#define _PAGE_READ (1<<6) /* implemented in software */
-#define _PAGE_WRITE (1<<7) /* implemented in software */
-#define _PAGE_PRESENT (1<<9) /* implemented in software */
-#define _PAGE_MODIFIED (1<<10) /* implemented in software */
-
-#define _PAGE_GLOBAL (1<<0)
-#define _PAGE_VALID (1<<1)
-#define _PAGE_SILENT_READ (1<<1) /* synonym */
-#define _PAGE_DIRTY (1<<2) /* Write bit */
-#define _PAGE_SILENT_WRITE (1<<2)
-#define _PAGE_CACHE (1<<3) /* cache */
-#define _CACHE_MASK (1<<3)
-#define _PAGE_BUFFERABLE (1<<4) /*Fallow Spec. */
-
-#define __READABLE (_PAGE_READ | _PAGE_SILENT_READ | _PAGE_ACCESSED)
-#define __WRITEABLE (_PAGE_WRITE | _PAGE_SILENT_WRITE | _PAGE_MODIFIED)
-#define _PAGE_CHG_MASK \
- (PAGE_MASK | _PAGE_ACCESSED | _PAGE_MODIFIED | _PAGE_CACHE)
-
-#endif /* _ASM_SCORE_PGTABLE_BITS_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_PGTABLE_H
-#define _ASM_SCORE_PGTABLE_H
-
-#include <linux/const.h>
-#define __ARCH_USE_5LEVEL_HACK
-#include <asm-generic/pgtable-nopmd.h>
-
-#include <asm/fixmap.h>
-#include <asm/setup.h>
-#include <asm/pgtable-bits.h>
-
-extern void load_pgd(unsigned long pg_dir);
-extern pte_t invalid_pte_table[PAGE_SIZE/sizeof(pte_t)];
-
-/* PGDIR_SHIFT determines what a third-level page table entry can map */
-#define PGDIR_SHIFT 22
-#define PGDIR_SIZE (_AC(1, UL) << PGDIR_SHIFT)
-#define PGDIR_MASK (~(PGDIR_SIZE - 1))
-
-/*
- * Entries per page directory level: we use two-level, so
- * we don't really have any PUD/PMD directory physically.
- */
-#define PGD_ORDER 0
-#define PTE_ORDER 0
-
-#define PTRS_PER_PGD 1024
-#define PTRS_PER_PTE 1024
-
-#define USER_PTRS_PER_PGD (0x80000000UL/PGDIR_SIZE)
-#define FIRST_USER_ADDRESS 0UL
-
-#define VMALLOC_START (0xc0000000UL)
-
-#define PKMAP_BASE (0xfd000000UL)
-
-#define VMALLOC_END (FIXADDR_START - 2*PAGE_SIZE)
-
-#define pte_ERROR(e) \
- printk(KERN_ERR "%s:%d: bad pte %08lx.\n", \
- __FILE__, __LINE__, pte_val(e))
-#define pgd_ERROR(e) \
- printk(KERN_ERR "%s:%d: bad pgd %08lx.\n", \
- __FILE__, __LINE__, pgd_val(e))
-
-/*
- * Empty pgd/pmd entries point to the invalid_pte_table.
- */
-static inline int pmd_none(pmd_t pmd)
-{
- return pmd_val(pmd) == (unsigned long) invalid_pte_table;
-}
-
-#define pmd_bad(pmd) (pmd_val(pmd) & ~PAGE_MASK)
-
-static inline int pmd_present(pmd_t pmd)
-{
- return pmd_val(pmd) != (unsigned long) invalid_pte_table;
-}
-
-static inline void pmd_clear(pmd_t *pmdp)
-{
- pmd_val(*pmdp) = ((unsigned long) invalid_pte_table);
-}
-
-#define pte_page(x) pfn_to_page(pte_pfn(x))
-#define pte_pfn(x) ((unsigned long)((x).pte >> PAGE_SHIFT))
-#define pfn_pte(pfn, prot) \
- __pte(((unsigned long long)(pfn) << PAGE_SHIFT) | pgprot_val(prot))
-
-#define __pgd_offset(address) pgd_index(address)
-#define __pud_offset(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD-1))
-#define __pmd_offset(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
-
-/* to find an entry in a kernel page-table-directory */
-#define pgd_offset_k(address) pgd_offset(&init_mm, address)
-#define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD-1))
-
-/* to find an entry in a page-table-directory */
-#define pgd_offset(mm, addr) ((mm)->pgd + pgd_index(addr))
-
-/* Find an entry in the third-level page table.. */
-#define __pte_offset(address) \
- (((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
-#define pte_offset(dir, address) \
- ((pte_t *) pmd_page_vaddr(*(dir)) + __pte_offset(address))
-#define pte_offset_kernel(dir, address) \
- ((pte_t *) pmd_page_vaddr(*(dir)) + __pte_offset(address))
-
-#define pte_offset_map(dir, address) \
- ((pte_t *)page_address(pmd_page(*(dir))) + __pte_offset(address))
-#define pte_unmap(pte) ((void)(pte))
-
-#define __pte_to_swp_entry(pte) \
- ((swp_entry_t) { pte_val(pte)})
-#define __swp_entry_to_pte(x) ((pte_t) {(x).val})
-
-#define pmd_phys(pmd) __pa((void *)pmd_val(pmd))
-#define pmd_page(pmd) (pfn_to_page(pmd_phys(pmd) >> PAGE_SHIFT))
-#define mk_pte(page, prot) pfn_pte(page_to_pfn(page), prot)
-static inline pte_t pte_mkspecial(pte_t pte) { return pte; }
-
-#define set_pte(pteptr, pteval) (*(pteptr) = pteval)
-#define set_pte_at(mm, addr, ptep, pteval) set_pte(ptep, pteval)
-#define pte_clear(mm, addr, xp) \
- do { set_pte_at(mm, addr, xp, __pte(0)); } while (0)
-
-/*
- * The "pgd_xxx()" functions here are trivial for a folded two-level
- * setup: the pgd is never bad, and a pmd always exists (as it's folded
- * into the pgd entry)
- */
-#define pgd_present(pgd) (1)
-#define pgd_none(pgd) (0)
-#define pgd_bad(pgd) (0)
-#define pgd_clear(pgdp) do { } while (0)
-
-#define kern_addr_valid(addr) (1)
-#define pmd_page_vaddr(pmd) pmd_val(pmd)
-
-#define pte_none(pte) (!(pte_val(pte) & ~_PAGE_GLOBAL))
-#define pte_present(pte) (pte_val(pte) & _PAGE_PRESENT)
-
-#define PAGE_NONE __pgprot(_PAGE_PRESENT | _PAGE_CACHE)
-#define PAGE_SHARED __pgprot(_PAGE_PRESENT | _PAGE_READ | _PAGE_WRITE | \
- _PAGE_CACHE)
-#define PAGE_COPY __pgprot(_PAGE_PRESENT | _PAGE_READ | _PAGE_CACHE)
-#define PAGE_READONLY __pgprot(_PAGE_PRESENT | _PAGE_READ | _PAGE_CACHE)
-#define PAGE_KERNEL __pgprot(_PAGE_PRESENT | __READABLE | __WRITEABLE | \
- _PAGE_GLOBAL | _PAGE_CACHE)
-#define PAGE_KERNEL_UNCACHED __pgprot(_PAGE_PRESENT | __READABLE | \
- __WRITEABLE | _PAGE_GLOBAL & ~_PAGE_CACHE)
-
-#define __P000 PAGE_NONE
-#define __P001 PAGE_READONLY
-#define __P010 PAGE_COPY
-#define __P011 PAGE_COPY
-#define __P100 PAGE_READONLY
-#define __P101 PAGE_READONLY
-#define __P110 PAGE_COPY
-#define __P111 PAGE_COPY
-
-#define __S000 PAGE_NONE
-#define __S001 PAGE_READONLY
-#define __S010 PAGE_SHARED
-#define __S011 PAGE_SHARED
-#define __S100 PAGE_READONLY
-#define __S101 PAGE_READONLY
-#define __S110 PAGE_SHARED
-#define __S111 PAGE_SHARED
-
-#define pgprot_noncached pgprot_noncached
-
-static inline pgprot_t pgprot_noncached(pgprot_t _prot)
-{
- unsigned long prot = pgprot_val(_prot);
-
- prot = (prot & ~_CACHE_MASK);
-
- return __pgprot(prot);
-}
-
-#define __swp_type(x) ((x).val & 0x1f)
-#define __swp_offset(x) ((x).val >> 10)
-#define __swp_entry(type, offset) ((swp_entry_t){(type) | ((offset) << 10)})
-
-extern unsigned long empty_zero_page;
-extern unsigned long zero_page_mask;
-
-#define ZERO_PAGE(vaddr) \
- (virt_to_page((void *)(empty_zero_page + \
- (((unsigned long)(vaddr)) & zero_page_mask))))
-
-#define pgtable_cache_init() do {} while (0)
-
-#define arch_enter_lazy_cpu_mode() do {} while (0)
-
-static inline int pte_write(pte_t pte)
-{
- return pte_val(pte) & _PAGE_WRITE;
-}
-
-static inline int pte_dirty(pte_t pte)
-{
- return pte_val(pte) & _PAGE_MODIFIED;
-}
-
-static inline int pte_young(pte_t pte)
-{
- return pte_val(pte) & _PAGE_ACCESSED;
-}
-
-#define pte_special(pte) (0)
-
-static inline pte_t pte_wrprotect(pte_t pte)
-{
- pte_val(pte) &= ~(_PAGE_WRITE | _PAGE_SILENT_WRITE);
- return pte;
-}
-
-static inline pte_t pte_mkclean(pte_t pte)
-{
- pte_val(pte) &= ~(_PAGE_MODIFIED|_PAGE_SILENT_WRITE);
- return pte;
-}
-
-static inline pte_t pte_mkold(pte_t pte)
-{
- pte_val(pte) &= ~(_PAGE_ACCESSED|_PAGE_SILENT_READ);
- return pte;
-}
-
-static inline pte_t pte_mkwrite(pte_t pte)
-{
- pte_val(pte) |= _PAGE_WRITE;
- if (pte_val(pte) & _PAGE_MODIFIED)
- pte_val(pte) |= _PAGE_SILENT_WRITE;
- return pte;
-}
-
-static inline pte_t pte_mkdirty(pte_t pte)
-{
- pte_val(pte) |= _PAGE_MODIFIED;
- if (pte_val(pte) & _PAGE_WRITE)
- pte_val(pte) |= _PAGE_SILENT_WRITE;
- return pte;
-}
-
-static inline pte_t pte_mkyoung(pte_t pte)
-{
- pte_val(pte) |= _PAGE_ACCESSED;
- if (pte_val(pte) & _PAGE_READ)
- pte_val(pte) |= _PAGE_SILENT_READ;
- return pte;
-}
-
-#define set_pmd(pmdptr, pmdval) \
- do { *(pmdptr) = (pmdval); } while (0)
-#define pte_present(pte) (pte_val(pte) & _PAGE_PRESENT)
-
-extern unsigned long pgd_current;
-extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
-extern void paging_init(void);
-
-static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
-{
- return __pte((pte_val(pte) & _PAGE_CHG_MASK) | pgprot_val(newprot));
-}
-
-extern void __update_tlb(struct vm_area_struct *vma,
- unsigned long address, pte_t pte);
-extern void __update_cache(struct vm_area_struct *vma,
- unsigned long address, pte_t pte);
-
-static inline void update_mmu_cache(struct vm_area_struct *vma,
- unsigned long address, pte_t *ptep)
-{
- pte_t pte = *ptep;
- __update_tlb(vma, address, pte);
- __update_cache(vma, address, pte);
-}
-
-#ifndef __ASSEMBLY__
-#include <asm-generic/pgtable.h>
-
-void setup_memory(void);
-#endif /* __ASSEMBLY__ */
-
-#endif /* _ASM_SCORE_PGTABLE_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_PROCESSOR_H
-#define _ASM_SCORE_PROCESSOR_H
-
-#include <linux/cpumask.h>
-#include <linux/threads.h>
-
-#include <asm/segment.h>
-
-struct task_struct;
-
-/*
- * System setup and hardware flags..
- */
-extern void (*cpu_wait)(void);
-
-extern void start_thread(struct pt_regs *regs,
- unsigned long pc, unsigned long sp);
-extern unsigned long get_wchan(struct task_struct *p);
-
-/*
- * Return current * instruction pointer ("program counter").
- */
-#define current_text_addr() ({ __label__ _l; _l: &&_l; })
-
-#define cpu_relax() barrier()
-#define release_thread(thread) do {} while (0)
-
-/*
- * User space process size: 2GB. This is hardcoded into a few places,
- * so don't change it unless you know what you are doing.
- */
-#define TASK_SIZE 0x7fff8000UL
-
-/*
- * This decides where the kernel will search for a free chunk of vm
- * space during mmap's.
- */
-#define TASK_UNMAPPED_BASE ((TASK_SIZE / 3) & ~(PAGE_SIZE))
-
-#ifdef __KERNEL__
-#define STACK_TOP TASK_SIZE
-#define STACK_TOP_MAX TASK_SIZE
-#endif
-
-/*
- * If you change thread_struct remember to change the #defines below too!
- */
-struct thread_struct {
- unsigned long reg0, reg2, reg3;
- unsigned long reg12, reg13, reg14, reg15, reg16;
- unsigned long reg17, reg18, reg19, reg20, reg21;
-
- unsigned long cp0_psr;
- unsigned long cp0_ema; /* Last user fault */
- unsigned long cp0_badvaddr; /* Last user fault */
- unsigned long cp0_baduaddr; /* Last kernel fault accessing USEG */
- unsigned long error_code;
- unsigned long trap_no;
-
- unsigned long mflags;
- unsigned long reg29;
-
- unsigned long single_step;
- unsigned long ss_nextcnt;
-
- unsigned long insn1_type;
- unsigned long addr1;
- unsigned long insn1;
-
- unsigned long insn2_type;
- unsigned long addr2;
- unsigned long insn2;
-
- mm_segment_t current_ds;
-};
-
-#define INIT_THREAD { \
- .reg0 = 0, \
- .reg2 = 0, \
- .reg3 = 0, \
- .reg12 = 0, \
- .reg13 = 0, \
- .reg14 = 0, \
- .reg15 = 0, \
- .reg16 = 0, \
- .reg17 = 0, \
- .reg18 = 0, \
- .reg19 = 0, \
- .reg20 = 0, \
- .reg21 = 0, \
- .cp0_psr = 0, \
- .error_code = 0, \
- .trap_no = 0, \
-}
-
-#define kstk_tos(tsk) \
- ((unsigned long)task_stack_page(tsk) + THREAD_SIZE - 32)
-#define task_pt_regs(tsk) ((struct pt_regs *)kstk_tos(tsk) - 1)
-
-#define KSTK_EIP(tsk) (task_pt_regs(tsk)->cp0_epc)
-#define KSTK_ESP(tsk) (task_pt_regs(tsk)->regs[29])
-
-#endif /* _ASM_SCORE_PROCESSOR_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_PTRACE_H
-#define _ASM_SCORE_PTRACE_H
-
-#include <uapi/asm/ptrace.h>
-
-
-struct task_struct;
-
-/*
- * Does the process account for user or for system time?
- */
-#define user_mode(regs) ((regs->cp0_psr & 8) == 8)
-
-#define instruction_pointer(regs) ((unsigned long)(regs)->cp0_epc)
-#define profile_pc(regs) instruction_pointer(regs)
-#define user_stack_pointer(r) ((unsigned long)(r)->regs[0])
-
-extern void do_syscall_trace(struct pt_regs *regs, int entryexit);
-extern int read_tsk_long(struct task_struct *, unsigned long, unsigned long *);
-extern int read_tsk_short(struct task_struct *, unsigned long,
- unsigned short *);
-
-#define arch_has_single_step() (1)
-
-#endif /* _ASM_SCORE_PTRACE_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_SCOREREGS_H
-#define _ASM_SCORE_SCOREREGS_H
-
-#include <linux/linkage.h>
-
-/* TIMER register */
-#define TIME0BASE 0x96080000
-#define P_TIMER0_CTRL (TIME0BASE + 0x00)
-#define P_TIMER0_CPP_CTRL (TIME0BASE + 0x04)
-#define P_TIMER0_PRELOAD (TIME0BASE + 0x08)
-#define P_TIMER0_CPP_REG (TIME0BASE + 0x0C)
-#define P_TIMER0_UPCNT (TIME0BASE + 0x10)
-
-/* Timer Controller Register */
-/* bit 0 Timer enable */
-#define TMR_DISABLE 0x0000
-#define TMR_ENABLE 0x0001
-
-/* bit 1 Interrupt enable */
-#define TMR_IE_DISABLE 0x0000
-#define TMR_IE_ENABLE 0x0002
-
-/* bit 2 Output enable */
-#define TMR_OE_DISABLE 0x0004
-#define TMR_OE_ENABLE 0x0000
-
-/* bit4 Up/Down counting selection */
-#define TMR_UD_DOWN 0x0000
-#define TMR_UD_UP 0x0010
-
-/* bit5 Up/Down counting control selection */
-#define TMR_UDS_UD 0x0000
-#define TMR_UDS_EXTUD 0x0020
-
-/* bit6 Time output mode */
-#define TMR_OM_TOGGLE 0x0000
-#define TMR_OM_PILSE 0x0040
-
-/* bit 8..9 External input active edge selection */
-#define TMR_ES_PE 0x0000
-#define TMR_ES_NE 0x0100
-#define TMR_ES_BOTH 0x0200
-
-/* bit 10..11 Operating mode */
-#define TMR_M_FREE 0x0000 /* free running timer mode */
-#define TMR_M_PERIODIC 0x0400 /* periodic timer mode */
-#define TMR_M_FC 0x0800 /* free running counter mode */
-#define TMR_M_PC 0x0c00 /* periodic counter mode */
-
-#define SYSTEM_CLOCK (27*1000000/4) /* 27 MHz */
-#endif /* _ASM_SCORE_SCOREREGS_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_SEGMENT_H
-#define _ASM_SCORE_SEGMENT_H
-
-#ifndef __ASSEMBLY__
-
-typedef struct {
- unsigned long seg;
-} mm_segment_t;
-
-#define KERNEL_DS ((mm_segment_t){0})
-#define USER_DS KERNEL_DS
-
-# define get_ds() (KERNEL_DS)
-# define get_fs() (current_thread_info()->addr_limit)
-# define set_fs(x) \
- do { current_thread_info()->addr_limit = (x); } while (0)
-
-# define segment_eq(a, b) ((a).seg == (b).seg)
-
-# endif /* __ASSEMBLY__ */
-#endif /* _ASM_SCORE_SEGMENT_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_SETUP_H
-#define _ASM_SCORE_SETUP_H
-
-#include <uapi/asm/setup.h>
-
-
-extern void pagetable_init(void);
-extern void pgd_init(unsigned long page);
-
-extern void setup_early_printk(void);
-extern void cpu_cache_init(void);
-extern void tlb_init(void);
-
-extern void handle_nmi(void);
-extern void handle_adelinsn(void);
-extern void handle_adedata(void);
-extern void handle_ibe(void);
-extern void handle_pel(void);
-extern void handle_sys(void);
-extern void handle_ccu(void);
-extern void handle_ri(void);
-extern void handle_tr(void);
-extern void handle_ades(void);
-extern void handle_cee(void);
-extern void handle_cpe(void);
-extern void handle_dve(void);
-extern void handle_dbe(void);
-extern void handle_reserved(void);
-extern void handle_tlb_refill(void);
-extern void handle_tlb_invaild(void);
-extern void handle_mod(void);
-extern void debug_exception_vector(void);
-extern void general_exception_vector(void);
-extern void interrupt_exception_vector(void);
-
-#endif /* _ASM_SCORE_SETUP_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_SHMPARAM_H
-#define _ASM_SCORE_SHMPARAM_H
-
-#include <asm-generic/shmparam.h>
-
-#endif /* _ASM_SCORE_SHMPARAM_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_STRING_H
-#define _ASM_SCORE_STRING_H
-
-extern void *memset(void *__s, int __c, size_t __count);
-extern void *memcpy(void *__to, __const__ void *__from, size_t __n);
-extern void *memmove(void *__dest, __const__ void *__src, size_t __n);
-
-#endif /* _ASM_SCORE_STRING_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_SWITCH_TO_H
-#define _ASM_SCORE_SWITCH_TO_H
-
-extern void *resume(void *last, void *next, void *next_ti);
-
-#define switch_to(prev, next, last) \
-do { \
- (last) = resume(prev, next, task_thread_info(next)); \
-} while (0)
-
-#endif /* _ASM_SCORE_SWITCH_TO_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_SYSCALLS_H
-#define _ASM_SCORE_SYSCALLS_H
-
-asmlinkage long score_rt_sigreturn(struct pt_regs *regs);
-
-#include <asm-generic/syscalls.h>
-
-#endif /* _ASM_SCORE_SYSCALLS_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_THREAD_INFO_H
-#define _ASM_SCORE_THREAD_INFO_H
-
-#ifdef __KERNEL__
-
-#define KU_MASK 0x08
-#define KU_USER 0x08
-#define KU_KERN 0x00
-
-#include <asm/page.h>
-#include <linux/const.h>
-
-/* thread information allocation */
-#define THREAD_SIZE_ORDER (1)
-#define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER)
-#define THREAD_MASK (THREAD_SIZE - _AC(1,UL))
-
-#ifndef __ASSEMBLY__
-
-#include <asm/processor.h>
-
-/*
- * low level task data that entry.S needs immediate access to
- * - this struct should fit entirely inside of one cache line
- * - this struct shares the supervisor stack pages
- * - if the contents of this structure are changed, the assembly constants
- * must also be changed
- */
-struct thread_info {
- struct task_struct *task; /* main task structure */
- unsigned long flags; /* low level flags */
- unsigned long tp_value; /* thread pointer */
- __u32 cpu; /* current CPU */
-
- /* 0 => preemptable, < 0 => BUG */
- int preempt_count;
-
- /*
- * thread address space:
- * 0-0xBFFFFFFF for user-thead
- * 0-0xFFFFFFFF for kernel-thread
- */
- mm_segment_t addr_limit;
- struct pt_regs *regs;
-};
-
-/*
- * macros/functions for gaining access to the thread information structure
- *
- * preempt_count needs to be 1 initially, until the scheduler is functional.
- */
-#define INIT_THREAD_INFO(tsk) \
-{ \
- .task = &tsk, \
- .cpu = 0, \
- .preempt_count = 1, \
- .addr_limit = KERNEL_DS, \
-}
-
-/* How to get the thread information struct from C. */
-register struct thread_info *__current_thread_info __asm__("r28");
-#define current_thread_info() __current_thread_info
-
-#endif /* !__ASSEMBLY__ */
-
-/*
- * thread information flags
- * - these are process state flags that various assembly files may need to
- * access
- * - pending work-to-be-done flags are in LSW
- * - other flags in MSW
- */
-#define TIF_SYSCALL_TRACE 0 /* syscall trace active */
-#define TIF_SIGPENDING 1 /* signal pending */
-#define TIF_NEED_RESCHED 2 /* rescheduling necessary */
-#define TIF_NOTIFY_RESUME 5 /* callback before returning to user */
-#define TIF_RESTORE_SIGMASK 9 /* restore signal mask in do_signal() */
-#define TIF_MEMDIE 18 /* is terminating due to OOM killer */
-
-#define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE)
-#define _TIF_SIGPENDING (1<<TIF_SIGPENDING)
-#define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED)
-#define _TIF_NOTIFY_RESUME (1<<TIF_NOTIFY_RESUME)
-
-#define _TIF_WORK_MASK (0x0000ffff)
-
-#endif /* __KERNEL__ */
-
-#endif /* _ASM_SCORE_THREAD_INFO_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_TIMEX_H
-#define _ASM_SCORE_TIMEX_H
-
-#define CLOCK_TICK_RATE 27000000 /* Timer input freq. */
-
-#include <asm-generic/timex.h>
-
-#endif /* _ASM_SCORE_TIMEX_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_TLB_H
-#define _ASM_SCORE_TLB_H
-
-/*
- * SCORE doesn't need any special per-pte or per-vma handling, except
- * we need to flush cache for area to be unmapped.
- */
-#define tlb_start_vma(tlb, vma) do {} while (0)
-#define tlb_end_vma(tlb, vma) do {} while (0)
-#define __tlb_remove_tlb_entry(tlb, ptep, address) do {} while (0)
-#define tlb_flush(tlb) flush_tlb_mm((tlb)->mm)
-
-extern void score7_FTLB_refill_Handler(void);
-
-#include <asm-generic/tlb.h>
-
-#endif /* _ASM_SCORE_TLB_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_TLBFLUSH_H
-#define _ASM_SCORE_TLBFLUSH_H
-
-#include <linux/mm.h>
-
-/*
- * TLB flushing:
- *
- * - flush_tlb_all() flushes all processes TLB entries
- * - flush_tlb_mm(mm) flushes the specified mm context TLB entries
- * - flush_tlb_page(vma, vmaddr) flushes one page
- * - flush_tlb_range(vma, start, end) flushes a range of pages
- * - flush_tlb_kernel_range(start, end) flushes a range of kernel pages
- */
-extern void local_flush_tlb_all(void);
-extern void local_flush_tlb_mm(struct mm_struct *mm);
-extern void local_flush_tlb_range(struct vm_area_struct *vma,
- unsigned long start, unsigned long end);
-extern void local_flush_tlb_kernel_range(unsigned long start,
- unsigned long end);
-extern void local_flush_tlb_page(struct vm_area_struct *vma,
- unsigned long page);
-extern void local_flush_tlb_one(unsigned long vaddr);
-
-#define flush_tlb_all() local_flush_tlb_all()
-#define flush_tlb_mm(mm) local_flush_tlb_mm(mm)
-#define flush_tlb_range(vma, vmaddr, end) \
- local_flush_tlb_range(vma, vmaddr, end)
-#define flush_tlb_kernel_range(vmaddr, end) \
- local_flush_tlb_kernel_range(vmaddr, end)
-#define flush_tlb_page(vma, page) local_flush_tlb_page(vma, page)
-#define flush_tlb_one(vaddr) local_flush_tlb_one(vaddr)
-
-#ifndef __ASSEMBLY__
-
-static inline unsigned long pevn_get(void)
-{
- unsigned long val;
-
- __asm__ __volatile__(
- "mfcr %0, cr11\n"
- "nop\nnop\n"
- : "=r" (val));
-
- return val;
-}
-
-static inline void pevn_set(unsigned long val)
-{
- __asm__ __volatile__(
- "mtcr %0, cr11\n"
- "nop\nnop\nnop\nnop\nnop\n"
- : : "r" (val));
-}
-
-static inline void pectx_set(unsigned long val)
-{
- __asm__ __volatile__(
- "mtcr %0, cr12\n"
- "nop\nnop\nnop\nnop\nnop\n"
- : : "r" (val));
-}
-
-static inline unsigned long pectx_get(void)
-{
- unsigned long val;
- __asm__ __volatile__(
- "mfcr %0, cr12\n"
- "nop\nnop\n"
- : "=r" (val));
- return val;
-}
-static inline unsigned long tlblock_get(void)
-{
- unsigned long val;
-
- __asm__ __volatile__(
- "mfcr %0, cr7\n"
- "nop\nnop\n"
- : "=r" (val));
- return val;
-}
-static inline void tlblock_set(unsigned long val)
-{
- __asm__ __volatile__(
- "mtcr %0, cr7\n"
- "nop\nnop\nnop\nnop\nnop\n"
- : : "r" (val));
-}
-
-static inline void tlbpt_set(unsigned long val)
-{
- __asm__ __volatile__(
- "mtcr %0, cr8\n"
- "nop\nnop\nnop\nnop\nnop\n"
- : : "r" (val));
-}
-
-static inline long tlbpt_get(void)
-{
- long val;
-
- __asm__ __volatile__(
- "mfcr %0, cr8\n"
- "nop\nnop\n"
- : "=r" (val));
-
- return val;
-}
-
-static inline void peaddr_set(unsigned long val)
-{
- __asm__ __volatile__(
- "mtcr %0, cr9\n"
- "nop\nnop\nnop\nnop\nnop\n"
- : : "r" (val));
-}
-
-/* TLB operations. */
-static inline void tlb_probe(void)
-{
- __asm__ __volatile__("stlb;nop;nop;nop;nop;nop");
-}
-
-static inline void tlb_read(void)
-{
- __asm__ __volatile__("mftlb;nop;nop;nop;nop;nop");
-}
-
-static inline void tlb_write_indexed(void)
-{
- __asm__ __volatile__("mtptlb;nop;nop;nop;nop;nop");
-}
-
-static inline void tlb_write_random(void)
-{
- __asm__ __volatile__("mtrtlb;nop;nop;nop;nop;nop");
-}
-
-#endif /* Not __ASSEMBLY__ */
-
-#endif /* _ASM_SCORE_TLBFLUSH_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_TOPOLOGY_H
-#define _ASM_SCORE_TOPOLOGY_H
-
-#include <asm-generic/topology.h>
-
-#endif /* _ASM_SCORE_TOPOLOGY_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef __SCORE_UACCESS_H
-#define __SCORE_UACCESS_H
-
-#include <linux/kernel.h>
-#include <asm/extable.h>
-
-#define get_ds() (KERNEL_DS)
-#define get_fs() (current_thread_info()->addr_limit)
-#define segment_eq(a, b) ((a).seg == (b).seg)
-
-/*
- * Is a address valid? This does a straighforward calculation rather
- * than tests.
- *
- * Address valid if:
- * - "addr" doesn't have any high-bits set
- * - AND "size" doesn't have any high-bits set
- * - AND "addr+size" doesn't have any high-bits set
- * - OR we are in kernel mode.
- *
- * __ua_size() is a trick to avoid runtime checking of positive constant
- * sizes; for those we already know at compile time that the size is ok.
- */
-#define __ua_size(size) \
- ((__builtin_constant_p(size) && (signed long) (size) > 0) ? 0 : (size))
-
-/*
- * access_ok: - Checks if a user space pointer is valid
- * @type: Type of access: %VERIFY_READ or %VERIFY_WRITE. Note that
- * %VERIFY_WRITE is a superset of %VERIFY_READ - if it is safe
- * to write to a block, it is always safe to read from it.
- * @addr: User space pointer to start of block to check
- * @size: Size of block to check
- *
- * Context: User context only. This function may sleep if pagefaults are
- * enabled.
- *
- * Checks if a pointer to a block of memory in user space is valid.
- *
- * Returns true (nonzero) if the memory block may be valid, false (zero)
- * if it is definitely invalid.
- *
- * Note that, depending on architecture, this function probably just
- * checks that the pointer is in the user space range - after calling
- * this function, memory access functions may still return -EFAULT.
- */
-
-#define __access_ok(addr, size) \
- (((long)((get_fs().seg) & \
- ((addr) | ((addr) + (size)) | \
- __ua_size(size)))) == 0)
-
-#define access_ok(type, addr, size) \
- likely(__access_ok((unsigned long)(addr), (size)))
-
-/*
- * put_user: - Write a simple value into user space.
- * @x: Value to copy to user space.
- * @ptr: Destination address, in user space.
- *
- * Context: User context only. This function may sleep if pagefaults are
- * enabled.
- *
- * This macro copies a single simple value from kernel space to user
- * space. It supports simple types like char and int, but not larger
- * data types like structures or arrays.
- *
- * @ptr must have pointer-to-simple-variable type, and @x must be assignable
- * to the result of dereferencing @ptr.
- *
- * Returns zero on success, or -EFAULT on error.
- */
-#define put_user(x, ptr) __put_user_check((x), (ptr), sizeof(*(ptr)))
-
-/*
- * get_user: - Get a simple variable from user space.
- * @x: Variable to store result.
- * @ptr: Source address, in user space.
- *
- * Context: User context only. This function may sleep if pagefaults are
- * enabled.
- *
- * This macro copies a single simple variable from user space to kernel
- * space. It supports simple types like char and int, but not larger
- * data types like structures or arrays.
- *
- * @ptr must have pointer-to-simple-variable type, and the result of
- * dereferencing @ptr must be assignable to @x without a cast.
- *
- * Returns zero on success, or -EFAULT on error.
- * On error, the variable @x is set to zero.
- */
-#define get_user(x, ptr) __get_user_check((x), (ptr), sizeof(*(ptr)))
-
-/*
- * __put_user: - Write a simple value into user space, with less checking.
- * @x: Value to copy to user space.
- * @ptr: Destination address, in user space.
- *
- * Context: User context only. This function may sleep if pagefaults are
- * enabled.
- *
- * This macro copies a single simple value from kernel space to user
- * space. It supports simple types like char and int, but not larger
- * data types like structures or arrays.
- *
- * @ptr must have pointer-to-simple-variable type, and @x must be assignable
- * to the result of dereferencing @ptr.
- *
- * Caller must check the pointer with access_ok() before calling this
- * function.
- *
- * Returns zero on success, or -EFAULT on error.
- */
-#define __put_user(x, ptr) __put_user_nocheck((x), (ptr), sizeof(*(ptr)))
-
-/*
- * __get_user: - Get a simple variable from user space, with less checking.
- * @x: Variable to store result.
- * @ptr: Source address, in user space.
- *
- * Context: User context only. This function may sleep if pagefaults are
- * enabled.
- *
- * This macro copies a single simple variable from user space to kernel
- * space. It supports simple types like char and int, but not larger
- * data types like structures or arrays.
- *
- * @ptr must have pointer-to-simple-variable type, and the result of
- * dereferencing @ptr must be assignable to @x without a cast.
- *
- * Caller must check the pointer with access_ok() before calling this
- * function.
- *
- * Returns zero on success, or -EFAULT on error.
- * On error, the variable @x is set to zero.
- */
-#define __get_user(x, ptr) __get_user_nocheck((x), (ptr), sizeof(*(ptr)))
-
-struct __large_struct { unsigned long buf[100]; };
-#define __m(x) (*(struct __large_struct __user *)(x))
-
-/*
- * Yuck. We need two variants, one for 64bit operation and one
- * for 32 bit mode and old iron.
- */
-extern void __get_user_unknown(void);
-
-#define __get_user_common(val, size, ptr) \
-do { \
- switch (size) { \
- case 1: \
- __get_user_asm(val, "lb", ptr); \
- break; \
- case 2: \
- __get_user_asm(val, "lh", ptr); \
- break; \
- case 4: \
- __get_user_asm(val, "lw", ptr); \
- break; \
- case 8: \
- if (__copy_from_user((void *)&val, ptr, 8) == 0) \
- __gu_err = 0; \
- else \
- __gu_err = -EFAULT; \
- break; \
- default: \
- __get_user_unknown(); \
- break; \
- } \
-} while (0)
-
-#define __get_user_nocheck(x, ptr, size) \
-({ \
- long __gu_err = 0; \
- __get_user_common((x), size, ptr); \
- __gu_err; \
-})
-
-#define __get_user_check(x, ptr, size) \
-({ \
- long __gu_err = -EFAULT; \
- const __typeof__(*(ptr)) __user *__gu_ptr = (ptr); \
- \
- if (likely(access_ok(VERIFY_READ, __gu_ptr, size))) \
- __get_user_common((x), size, __gu_ptr); \
- else \
- (x) = 0; \
- \
- __gu_err; \
-})
-
-#define __get_user_asm(val, insn, addr) \
-{ \
- long __gu_tmp; \
- \
- __asm__ __volatile__( \
- "1:" insn " %1, %3\n" \
- "2:\n" \
- ".section .fixup,\"ax\"\n" \
- "3:li %0, %4\n" \
- "li %1, 0\n" \
- "j 2b\n" \
- ".previous\n" \
- ".section __ex_table,\"a\"\n" \
- ".word 1b, 3b\n" \
- ".previous\n" \
- : "=r" (__gu_err), "=r" (__gu_tmp) \
- : "0" (0), "o" (__m(addr)), "i" (-EFAULT)); \
- \
- (val) = (__typeof__(*(addr))) __gu_tmp; \
-}
-
-/*
- * Yuck. We need two variants, one for 64bit operation and one
- * for 32 bit mode and old iron.
- */
-#define __put_user_nocheck(val, ptr, size) \
-({ \
- __typeof__(*(ptr)) __pu_val; \
- long __pu_err = 0; \
- \
- __pu_val = (val); \
- switch (size) { \
- case 1: \
- __put_user_asm("sb", ptr); \
- break; \
- case 2: \
- __put_user_asm("sh", ptr); \
- break; \
- case 4: \
- __put_user_asm("sw", ptr); \
- break; \
- case 8: \
- if ((__copy_to_user((void *)ptr, &__pu_val, 8)) == 0) \
- __pu_err = 0; \
- else \
- __pu_err = -EFAULT; \
- break; \
- default: \
- __put_user_unknown(); \
- break; \
- } \
- __pu_err; \
-})
-
-
-#define __put_user_check(val, ptr, size) \
-({ \
- __typeof__(*(ptr)) __user *__pu_addr = (ptr); \
- __typeof__(*(ptr)) __pu_val = (val); \
- long __pu_err = -EFAULT; \
- \
- if (likely(access_ok(VERIFY_WRITE, __pu_addr, size))) { \
- switch (size) { \
- case 1: \
- __put_user_asm("sb", __pu_addr); \
- break; \
- case 2: \
- __put_user_asm("sh", __pu_addr); \
- break; \
- case 4: \
- __put_user_asm("sw", __pu_addr); \
- break; \
- case 8: \
- if ((__copy_to_user((void *)__pu_addr, &__pu_val, 8)) == 0)\
- __pu_err = 0; \
- else \
- __pu_err = -EFAULT; \
- break; \
- default: \
- __put_user_unknown(); \
- break; \
- } \
- } \
- __pu_err; \
-})
-
-#define __put_user_asm(insn, ptr) \
- __asm__ __volatile__( \
- "1:" insn " %2, %3\n" \
- "2:\n" \
- ".section .fixup,\"ax\"\n" \
- "3:li %0, %4\n" \
- "j 2b\n" \
- ".previous\n" \
- ".section __ex_table,\"a\"\n" \
- ".word 1b, 3b\n" \
- ".previous\n" \
- : "=r" (__pu_err) \
- : "0" (0), "r" (__pu_val), "o" (__m(ptr)), \
- "i" (-EFAULT));
-
-extern void __put_user_unknown(void);
-extern int __copy_tofrom_user(void *to, const void *from, unsigned long len);
-
-static inline unsigned long
-raw_copy_from_user(void *to, const void __user *from, unsigned long len)
-{
- return __copy_tofrom_user(to, (__force const void *)from, len);
-}
-
-static inline unsigned long
-raw_copy_to_user(void __user *to, const void *from, unsigned long len)
-{
- return __copy_tofrom_user((__force void *)to, from, len);
-}
-
-#define INLINE_COPY_FROM_USER
-#define INLINE_COPY_TO_USER
-
-/*
- * __clear_user: - Zero a block of memory in user space, with less checking.
- * @to: Destination address, in user space.
- * @n: Number of bytes to zero.
- *
- * Zero a block of memory in user space. Caller must check
- * the specified block with access_ok() before calling this function.
- *
- * Returns number of bytes that could not be cleared.
- * On success, this will be zero.
- */
-extern unsigned long __clear_user(void __user *src, unsigned long size);
-
-static inline unsigned long clear_user(char *src, unsigned long size)
-{
- if (access_ok(VERIFY_WRITE, src, size))
- return __clear_user(src, size);
-
- return -EFAULT;
-}
-/*
- * __strncpy_from_user: - Copy a NUL terminated string from userspace, with less checking.
- * @dst: Destination address, in kernel space. This buffer must be at
- * least @count bytes long.
- * @src: Source address, in user space.
- * @count: Maximum number of bytes to copy, including the trailing NUL.
- *
- * Copies a NUL-terminated string from userspace to kernel space.
- * Caller must check the specified block with access_ok() before calling
- * this function.
- *
- * On success, returns the length of the string (not including the trailing
- * NUL).
- *
- * If access to userspace fails, returns -EFAULT (some data may have been
- * copied).
- *
- * If @count is smaller than the length of the string, copies @count bytes
- * and returns @count.
- */
-extern int __strncpy_from_user(char *dst, const char *src, long len);
-
-static inline int strncpy_from_user(char *dst, const char *src, long len)
-{
- if (access_ok(VERIFY_READ, src, 1))
- return __strncpy_from_user(dst, src, len);
-
- return -EFAULT;
-}
-
-extern int __strnlen_user(const char *str, long len);
-static inline long strnlen_user(const char __user *str, long len)
-{
- if (!access_ok(VERIFY_READ, str, 0))
- return 0;
- else
- return __strnlen_user(str, len);
-}
-
-#endif /* __SCORE_UACCESS_H */
-
+++ /dev/null
-#include <asm-generic/ucontext.h>
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_UNALIGNED_H
-#define _ASM_SCORE_UNALIGNED_H
-
-#include <asm-generic/unaligned.h>
-
-#endif /* _ASM_SCORE_UNALIGNED_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef _ASM_SCORE_USER_H
-#define _ASM_SCORE_USER_H
-
-struct user_regs_struct {
- unsigned long regs[32];
-
- unsigned long cel;
- unsigned long ceh;
-
- unsigned long sr0; /* cnt */
- unsigned long sr1; /* lcr */
- unsigned long sr2; /* scr */
-
- unsigned long cp0_epc;
- unsigned long cp0_ema;
- unsigned long cp0_psr;
- unsigned long cp0_ecr;
- unsigned long cp0_condition;
-};
-
-#endif /* _ASM_SCORE_USER_H */
+++ /dev/null
-# UAPI Header export list
-include include/uapi/asm-generic/Kbuild.asm
-
-generic-y += bpf_perf_event.h
-generic-y += poll.h
-generic-y += siginfo.h
+++ /dev/null
-#ifndef _ASM_SCORE_AUXVEC_H
-#define _ASM_SCORE_AUXVEC_H
-
-#endif /* _ASM_SCORE_AUXVEC_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _ASM_SCORE_BITSPERLONG_H
-#define _ASM_SCORE_BITSPERLONG_H
-
-#include <asm-generic/bitsperlong.h>
-
-#endif /* _ASM_SCORE_BITSPERLONG_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _ASM_SCORE_BYTEORDER_H
-#define _ASM_SCORE_BYTEORDER_H
-
-#include <linux/byteorder/little_endian.h>
-
-#endif /* _ASM_SCORE_BYTEORDER_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _ASM_SCORE_ERRNO_H
-#define _ASM_SCORE_ERRNO_H
-
-#include <asm-generic/errno.h>
-
-#endif /* _ASM_SCORE_ERRNO_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _ASM_SCORE_FCNTL_H
-#define _ASM_SCORE_FCNTL_H
-
-#include <asm-generic/fcntl.h>
-
-#endif /* _ASM_SCORE_FCNTL_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _ASM_SCORE_IOCTL_H
-#define _ASM_SCORE_IOCTL_H
-
-#include <asm-generic/ioctl.h>
-
-#endif /* _ASM_SCORE_IOCTL_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _ASM_SCORE_IOCTLS_H
-#define _ASM_SCORE_IOCTLS_H
-
-#include <asm-generic/ioctls.h>
-
-#endif /* _ASM_SCORE_IOCTLS_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _ASM_SCORE_IPCBUF_H
-#define _ASM_SCORE_IPCBUF_H
-
-#include <asm-generic/ipcbuf.h>
-
-#endif /* _ASM_SCORE_IPCBUF_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#include <asm-generic/kvm_para.h>
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _ASM_SCORE_MMAN_H
-#define _ASM_SCORE_MMAN_H
-
-#include <asm-generic/mman.h>
-
-#endif /* _ASM_SCORE_MMAN_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _ASM_SCORE_MSGBUF_H
-#define _ASM_SCORE_MSGBUF_H
-
-#include <asm-generic/msgbuf.h>
-
-#endif /* _ASM_SCORE_MSGBUF_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _ASM_SCORE_PARAM_H
-#define _ASM_SCORE_PARAM_H
-
-#include <asm-generic/param.h>
-
-#endif /* _ASM_SCORE_PARAM_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _ASM_SCORE_POSIX_TYPES_H
-#define _ASM_SCORE_POSIX_TYPES_H
-
-#include <asm-generic/posix_types.h>
-
-#endif /* _ASM_SCORE_POSIX_TYPES_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _UAPI_ASM_SCORE_PTRACE_H
-#define _UAPI_ASM_SCORE_PTRACE_H
-
-#define PTRACE_GETREGS 12
-#define PTRACE_SETREGS 13
-
-#define SINGLESTEP16_INSN 0x7006
-#define SINGLESTEP32_INSN 0x840C8000
-#define BREAKPOINT16_INSN 0x7002 /* work on SPG300 */
-#define BREAKPOINT32_INSN 0x84048000 /* work on SPG300 */
-
-/* Define instruction mask */
-#define INSN32_MASK 0x80008000
-
-#define J32 0x88008000 /* 1_00010_0000000000_1_000000000000000 */
-#define J32M 0xFC008000 /* 1_11111_0000000000_1_000000000000000 */
-
-#define B32 0x90008000 /* 1_00100_0000000000_1_000000000000000 */
-#define B32M 0xFC008000
-#define BL32 0x90008001 /* 1_00100_0000000000_1_000000000000001 */
-#define BL32M B32
-#define BR32 0x80008008 /* 1_00000_0000000000_1_00000000_000100_0 */
-#define BR32M 0xFFE0807E
-#define BRL32 0x80008009 /* 1_00000_0000000000_1_00000000_000100_1 */
-#define BRL32M BR32M
-
-#define B32_SET (J32 | B32 | BL32 | BR32 | BRL32)
-
-#define J16 0x3000 /* 0_011_....... */
-#define J16M 0xF000
-#define B16 0x4000 /* 0_100_....... */
-#define B16M 0xF000
-#define BR16 0x0004 /* 0_000.......0100 */
-#define BR16M 0xF00F
-#define B16_SET (J16 | B16 | BR16)
-
-
-/*
- * This struct defines the way the registers are stored on the stack during a
- * system call/exception. As usual the registers k0/k1 aren't being saved.
- */
-struct pt_regs {
- unsigned long pad0[6]; /* stack arguments */
- unsigned long orig_r4;
- unsigned long orig_r7;
- long is_syscall;
-
- unsigned long regs[32];
-
- unsigned long cel;
- unsigned long ceh;
-
- unsigned long sr0; /* cnt */
- unsigned long sr1; /* lcr */
- unsigned long sr2; /* scr */
-
- unsigned long cp0_epc;
- unsigned long cp0_ema;
- unsigned long cp0_psr;
- unsigned long cp0_ecr;
- unsigned long cp0_condition;
-};
-
-
-#endif /* _UAPI_ASM_SCORE_PTRACE_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _ASM_SCORE_RESOURCE_H
-#define _ASM_SCORE_RESOURCE_H
-
-#include <asm-generic/resource.h>
-
-#endif /* _ASM_SCORE_RESOURCE_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _ASM_SCORE_SEMBUF_H
-#define _ASM_SCORE_SEMBUF_H
-
-#include <asm-generic/sembuf.h>
-
-#endif /* _ASM_SCORE_SEMBUF_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _UAPI_ASM_SCORE_SETUP_H
-#define _UAPI_ASM_SCORE_SETUP_H
-
-#define COMMAND_LINE_SIZE 256
-#define MEMORY_START 0
-#define MEMORY_SIZE 0x2000000
-
-
-#endif /* _UAPI_ASM_SCORE_SETUP_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _ASM_SCORE_SHMBUF_H
-#define _ASM_SCORE_SHMBUF_H
-
-#include <asm-generic/shmbuf.h>
-
-#endif /* _ASM_SCORE_SHMBUF_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _ASM_SCORE_SIGCONTEXT_H
-#define _ASM_SCORE_SIGCONTEXT_H
-
-/*
- * Keep this struct definition in sync with the sigcontext fragment
- * in arch/score/tools/offset.c
- */
-struct sigcontext {
- unsigned int sc_regmask;
- unsigned int sc_psr;
- unsigned int sc_condition;
- unsigned long sc_pc;
- unsigned long sc_regs[32];
- unsigned int sc_ssflags;
- unsigned int sc_mdceh;
- unsigned int sc_mdcel;
- unsigned int sc_ecr;
- unsigned long sc_ema;
- unsigned long sc_sigset[4];
-};
-
-#endif /* _ASM_SCORE_SIGCONTEXT_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _ASM_SCORE_SIGNAL_H
-#define _ASM_SCORE_SIGNAL_H
-
-#include <asm-generic/signal.h>
-
-#endif /* _ASM_SCORE_SIGNAL_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _ASM_SCORE_SOCKET_H
-#define _ASM_SCORE_SOCKET_H
-
-#include <asm-generic/socket.h>
-
-#endif /* _ASM_SCORE_SOCKET_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _ASM_SCORE_SOCKIOS_H
-#define _ASM_SCORE_SOCKIOS_H
-
-#include <asm-generic/sockios.h>
-
-#endif /* _ASM_SCORE_SOCKIOS_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _ASM_SCORE_STAT_H
-#define _ASM_SCORE_STAT_H
-
-#include <asm-generic/stat.h>
-
-#endif /* _ASM_SCORE_STAT_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _ASM_SCORE_STATFS_H
-#define _ASM_SCORE_STATFS_H
-
-#include <asm-generic/statfs.h>
-
-#endif /* _ASM_SCORE_STATFS_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _ASM_SCORE_SWAB_H
-#define _ASM_SCORE_SWAB_H
-
-#include <asm-generic/swab.h>
-
-#endif /* _ASM_SCORE_SWAB_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _ASM_SCORE_TERMBITS_H
-#define _ASM_SCORE_TERMBITS_H
-
-#include <asm-generic/termbits.h>
-
-#endif /* _ASM_SCORE_TERMBITS_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _ASM_SCORE_TERMIOS_H
-#define _ASM_SCORE_TERMIOS_H
-
-#include <asm-generic/termios.h>
-
-#endif /* _ASM_SCORE_TERMIOS_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _ASM_SCORE_TYPES_H
-#define _ASM_SCORE_TYPES_H
-
-#include <asm-generic/types.h>
-
-#endif /* _ASM_SCORE_TYPES_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#define __ARCH_HAVE_MMU
-
-#define __ARCH_WANT_RENAMEAT
-#define __ARCH_WANT_SYSCALL_NO_AT
-#define __ARCH_WANT_SYSCALL_NO_FLAGS
-#define __ARCH_WANT_SYSCALL_OFF_T
-#define __ARCH_WANT_SYSCALL_DEPRECATED
-#define __ARCH_WANT_SYS_CLONE
-#define __ARCH_WANT_SYS_FORK
-#define __ARCH_WANT_SYS_VFORK
-
-#include <asm-generic/unistd.h>
+++ /dev/null
-# SPDX-License-Identifier: GPL-2.0
-#
-# Makefile for the Linux/SCORE kernel.
-#
-
-extra-y := head.o vmlinux.lds
-
-obj-y += entry.o irq.o process.o ptrace.o \
- setup.o signal.o sys_score.o time.o traps.o \
- sys_call_table.o
-
-obj-$(CONFIG_MODULES) += module.o
+++ /dev/null
-/*
- * arch/score/kernel/asm-offsets.c
- *
- * Score Processor version.
- *
- * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
- * Chen Liqin <liqin.chen@sunplusct.com>
- * Lennox Wu <lennox.wu@sunplusct.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see the file COPYING, or write
- * to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <linux/kbuild.h>
-#include <linux/interrupt.h>
-#include <linux/mm.h>
-#include <linux/sched.h>
-
-#include <asm-generic/cmpxchg-local.h>
-
-void output_ptreg_defines(void)
-{
- COMMENT("SCORE pt_regs offsets.");
- OFFSET(PT_R0, pt_regs, regs[0]);
- OFFSET(PT_R1, pt_regs, regs[1]);
- OFFSET(PT_R2, pt_regs, regs[2]);
- OFFSET(PT_R3, pt_regs, regs[3]);
- OFFSET(PT_R4, pt_regs, regs[4]);
- OFFSET(PT_R5, pt_regs, regs[5]);
- OFFSET(PT_R6, pt_regs, regs[6]);
- OFFSET(PT_R7, pt_regs, regs[7]);
- OFFSET(PT_R8, pt_regs, regs[8]);
- OFFSET(PT_R9, pt_regs, regs[9]);
- OFFSET(PT_R10, pt_regs, regs[10]);
- OFFSET(PT_R11, pt_regs, regs[11]);
- OFFSET(PT_R12, pt_regs, regs[12]);
- OFFSET(PT_R13, pt_regs, regs[13]);
- OFFSET(PT_R14, pt_regs, regs[14]);
- OFFSET(PT_R15, pt_regs, regs[15]);
- OFFSET(PT_R16, pt_regs, regs[16]);
- OFFSET(PT_R17, pt_regs, regs[17]);
- OFFSET(PT_R18, pt_regs, regs[18]);
- OFFSET(PT_R19, pt_regs, regs[19]);
- OFFSET(PT_R20, pt_regs, regs[20]);
- OFFSET(PT_R21, pt_regs, regs[21]);
- OFFSET(PT_R22, pt_regs, regs[22]);
- OFFSET(PT_R23, pt_regs, regs[23]);
- OFFSET(PT_R24, pt_regs, regs[24]);
- OFFSET(PT_R25, pt_regs, regs[25]);
- OFFSET(PT_R26, pt_regs, regs[26]);
- OFFSET(PT_R27, pt_regs, regs[27]);
- OFFSET(PT_R28, pt_regs, regs[28]);
- OFFSET(PT_R29, pt_regs, regs[29]);
- OFFSET(PT_R30, pt_regs, regs[30]);
- OFFSET(PT_R31, pt_regs, regs[31]);
-
- OFFSET(PT_ORIG_R4, pt_regs, orig_r4);
- OFFSET(PT_ORIG_R7, pt_regs, orig_r7);
- OFFSET(PT_CEL, pt_regs, cel);
- OFFSET(PT_CEH, pt_regs, ceh);
- OFFSET(PT_SR0, pt_regs, sr0);
- OFFSET(PT_SR1, pt_regs, sr1);
- OFFSET(PT_SR2, pt_regs, sr2);
- OFFSET(PT_EPC, pt_regs, cp0_epc);
- OFFSET(PT_EMA, pt_regs, cp0_ema);
- OFFSET(PT_PSR, pt_regs, cp0_psr);
- OFFSET(PT_ECR, pt_regs, cp0_ecr);
- OFFSET(PT_CONDITION, pt_regs, cp0_condition);
- OFFSET(PT_IS_SYSCALL, pt_regs, is_syscall);
-
- DEFINE(PT_SIZE, sizeof(struct pt_regs));
- BLANK();
-}
-
-void output_task_defines(void)
-{
- COMMENT("SCORE task_struct offsets.");
- OFFSET(TASK_STATE, task_struct, state);
- OFFSET(TASK_THREAD_INFO, task_struct, stack);
- OFFSET(TASK_FLAGS, task_struct, flags);
- OFFSET(TASK_MM, task_struct, mm);
- OFFSET(TASK_PID, task_struct, pid);
- DEFINE(TASK_STRUCT_SIZE, sizeof(struct task_struct));
- BLANK();
-}
-
-void output_thread_info_defines(void)
-{
- COMMENT("SCORE thread_info offsets.");
- OFFSET(TI_TASK, thread_info, task);
- OFFSET(TI_FLAGS, thread_info, flags);
- OFFSET(TI_TP_VALUE, thread_info, tp_value);
- OFFSET(TI_CPU, thread_info, cpu);
- OFFSET(TI_PRE_COUNT, thread_info, preempt_count);
- OFFSET(TI_ADDR_LIMIT, thread_info, addr_limit);
- OFFSET(TI_REGS, thread_info, regs);
- DEFINE(KERNEL_STACK_SIZE, THREAD_SIZE);
- DEFINE(KERNEL_STACK_MASK, THREAD_MASK);
- BLANK();
-}
-
-void output_thread_defines(void)
-{
- COMMENT("SCORE specific thread_struct offsets.");
- OFFSET(THREAD_REG0, task_struct, thread.reg0);
- OFFSET(THREAD_REG2, task_struct, thread.reg2);
- OFFSET(THREAD_REG3, task_struct, thread.reg3);
- OFFSET(THREAD_REG12, task_struct, thread.reg12);
- OFFSET(THREAD_REG13, task_struct, thread.reg13);
- OFFSET(THREAD_REG14, task_struct, thread.reg14);
- OFFSET(THREAD_REG15, task_struct, thread.reg15);
- OFFSET(THREAD_REG16, task_struct, thread.reg16);
- OFFSET(THREAD_REG17, task_struct, thread.reg17);
- OFFSET(THREAD_REG18, task_struct, thread.reg18);
- OFFSET(THREAD_REG19, task_struct, thread.reg19);
- OFFSET(THREAD_REG20, task_struct, thread.reg20);
- OFFSET(THREAD_REG21, task_struct, thread.reg21);
- OFFSET(THREAD_REG29, task_struct, thread.reg29);
-
- OFFSET(THREAD_PSR, task_struct, thread.cp0_psr);
- OFFSET(THREAD_EMA, task_struct, thread.cp0_ema);
- OFFSET(THREAD_BADUADDR, task_struct, thread.cp0_baduaddr);
- OFFSET(THREAD_ECODE, task_struct, thread.error_code);
- OFFSET(THREAD_TRAPNO, task_struct, thread.trap_no);
- BLANK();
-}
-
-void output_mm_defines(void)
-{
- COMMENT("Size of struct page");
- DEFINE(STRUCT_PAGE_SIZE, sizeof(struct page));
- BLANK();
- COMMENT("Linux mm_struct offsets.");
- OFFSET(MM_USERS, mm_struct, mm_users);
- OFFSET(MM_PGD, mm_struct, pgd);
- OFFSET(MM_CONTEXT, mm_struct, context);
- BLANK();
- DEFINE(_PAGE_SIZE, PAGE_SIZE);
- DEFINE(_PAGE_SHIFT, PAGE_SHIFT);
- BLANK();
- DEFINE(_PGD_T_SIZE, sizeof(pgd_t));
- DEFINE(_PTE_T_SIZE, sizeof(pte_t));
- BLANK();
- DEFINE(_PGD_ORDER, PGD_ORDER);
- DEFINE(_PTE_ORDER, PTE_ORDER);
- BLANK();
- DEFINE(_PGDIR_SHIFT, PGDIR_SHIFT);
- BLANK();
- DEFINE(_PTRS_PER_PGD, PTRS_PER_PGD);
- DEFINE(_PTRS_PER_PTE, PTRS_PER_PTE);
- BLANK();
-}
-
-void output_sc_defines(void)
-{
- COMMENT("Linux sigcontext offsets.");
- OFFSET(SC_REGS, sigcontext, sc_regs);
- OFFSET(SC_MDCEH, sigcontext, sc_mdceh);
- OFFSET(SC_MDCEL, sigcontext, sc_mdcel);
- OFFSET(SC_PC, sigcontext, sc_pc);
- OFFSET(SC_PSR, sigcontext, sc_psr);
- OFFSET(SC_ECR, sigcontext, sc_ecr);
- OFFSET(SC_EMA, sigcontext, sc_ema);
- BLANK();
-}
-
-void output_signal_defined(void)
-{
- COMMENT("Linux signal numbers.");
- DEFINE(_SIGHUP, SIGHUP);
- DEFINE(_SIGINT, SIGINT);
- DEFINE(_SIGQUIT, SIGQUIT);
- DEFINE(_SIGILL, SIGILL);
- DEFINE(_SIGTRAP, SIGTRAP);
- DEFINE(_SIGIOT, SIGIOT);
- DEFINE(_SIGABRT, SIGABRT);
- DEFINE(_SIGFPE, SIGFPE);
- DEFINE(_SIGKILL, SIGKILL);
- DEFINE(_SIGBUS, SIGBUS);
- DEFINE(_SIGSEGV, SIGSEGV);
- DEFINE(_SIGSYS, SIGSYS);
- DEFINE(_SIGPIPE, SIGPIPE);
- DEFINE(_SIGALRM, SIGALRM);
- DEFINE(_SIGTERM, SIGTERM);
- DEFINE(_SIGUSR1, SIGUSR1);
- DEFINE(_SIGUSR2, SIGUSR2);
- DEFINE(_SIGCHLD, SIGCHLD);
- DEFINE(_SIGPWR, SIGPWR);
- DEFINE(_SIGWINCH, SIGWINCH);
- DEFINE(_SIGURG, SIGURG);
- DEFINE(_SIGIO, SIGIO);
- DEFINE(_SIGSTOP, SIGSTOP);
- DEFINE(_SIGTSTP, SIGTSTP);
- DEFINE(_SIGCONT, SIGCONT);
- DEFINE(_SIGTTIN, SIGTTIN);
- DEFINE(_SIGTTOU, SIGTTOU);
- DEFINE(_SIGVTALRM, SIGVTALRM);
- DEFINE(_SIGPROF, SIGPROF);
- DEFINE(_SIGXCPU, SIGXCPU);
- DEFINE(_SIGXFSZ, SIGXFSZ);
- BLANK();
-}
+++ /dev/null
-/*
- * arch/score/kernel/entry.S
- *
- * Score Processor version.
- *
- * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
- * Chen Liqin <liqin.chen@sunplusct.com>
- * Lennox Wu <lennox.wu@sunplusct.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see the file COPYING, or write
- * to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <linux/err.h>
-#include <linux/init.h>
-#include <linux/linkage.h>
-
-#include <asm/asmmacro.h>
-#include <asm/thread_info.h>
-#include <asm/unistd.h>
-
-/*
- * disable interrupts.
- */
-.macro disable_irq
- mfcr r8, cr0
- srli r8, r8, 1
- slli r8, r8, 1
- mtcr r8, cr0
- nop
- nop
- nop
- nop
- nop
-.endm
-
-/*
- * enable interrupts.
- */
-.macro enable_irq
- mfcr r8, cr0
- ori r8, 1
- mtcr r8, cr0
- nop
- nop
- nop
- nop
- nop
-.endm
-
-__INIT
-ENTRY(debug_exception_vector)
- nop!
- nop!
- nop!
- nop!
- nop!
- nop!
- nop!
- nop!
-
-ENTRY(general_exception_vector) # should move to addr 0x200
- j general_exception
- nop!
- nop!
- nop!
- nop!
- nop!
- nop!
-
-ENTRY(interrupt_exception_vector) # should move to addr 0x210
- j interrupt_exception
- nop!
- nop!
- nop!
- nop!
- nop!
- nop!
-
- .section ".text", "ax"
- .align 2;
-general_exception:
- mfcr r31, cr2
- nop
- la r30, exception_handlers
- andi r31, 0x1f # get ecr.exc_code
- slli r31, r31, 2
- add r30, r30, r31
- lw r30, [r30]
- br r30
-
-interrupt_exception:
- SAVE_ALL
- mfcr r4, cr2
- nop
- lw r16, [r28, TI_REGS]
- sw r0, [r28, TI_REGS]
- la r3, ret_from_irq
- srli r4, r4, 18 # get ecr.ip[7:2], interrupt No.
- mv r5, r0
- j do_IRQ
-
-ENTRY(handle_nmi) # NMI #1
- SAVE_ALL
- mv r4, r0
- la r8, nmi_exception_handler
- brl r8
- j restore_all
-
-ENTRY(handle_adelinsn) # AdEL-instruction #2
- SAVE_ALL
- mfcr r8, cr6
- nop
- nop
- sw r8, [r0, PT_EMA]
- mv r4, r0
- la r8, do_adelinsn
- brl r8
- mv r4, r0
- j ret_from_exception
- nop
-
-ENTRY(handle_ibe) # BusEL-instruction #5
- SAVE_ALL
- mv r4, r0
- la r8, do_be
- brl r8
- mv r4, r0
- j ret_from_exception
- nop
-
-ENTRY(handle_pel) # P-EL #6
- SAVE_ALL
- mv r4, r0
- la r8, do_pel
- brl r8
- mv r4, r0
- j ret_from_exception
- nop
-
-ENTRY(handle_ccu) # CCU #8
- SAVE_ALL
- mv r4, r0
- la r8, do_ccu
- brl r8
- mv r4, r0
- j ret_from_exception
- nop
-
-ENTRY(handle_ri) # RI #9
- SAVE_ALL
- mv r4, r0
- la r8, do_ri
- brl r8
- mv r4, r0
- j ret_from_exception
- nop
-
-ENTRY(handle_tr) # Trap #10
- SAVE_ALL
- mv r4, r0
- la r8, do_tr
- brl r8
- mv r4, r0
- j ret_from_exception
- nop
-
-ENTRY(handle_adedata) # AdES-instruction #12
- SAVE_ALL
- mfcr r8, cr6
- nop
- nop
- sw r8, [r0, PT_EMA]
- mv r4, r0
- la r8, do_adedata
- brl r8
- mv r4, r0
- j ret_from_exception
- nop
-
-ENTRY(handle_cee) # CeE #16
- SAVE_ALL
- mv r4, r0
- la r8, do_cee
- brl r8
- mv r4, r0
- j ret_from_exception
- nop
-
-ENTRY(handle_cpe) # CpE #17
- SAVE_ALL
- mv r4, r0
- la r8, do_cpe
- brl r8
- mv r4, r0
- j ret_from_exception
- nop
-
-ENTRY(handle_dbe) # BusEL-data #18
- SAVE_ALL
- mv r4, r0
- la r8, do_be
- brl r8
- mv r4, r0
- j ret_from_exception
- nop
-
-ENTRY(handle_reserved) # others
- SAVE_ALL
- mv r4, r0
- la r8, do_reserved
- brl r8
- mv r4, r0
- j ret_from_exception
- nop
-
-#ifndef CONFIG_PREEMPT
-#define resume_kernel restore_all
-#else
-#define __ret_from_irq ret_from_exception
-#endif
-
- .align 2
-#ifndef CONFIG_PREEMPT
-ENTRY(ret_from_exception)
- disable_irq # preempt stop
- nop
- j __ret_from_irq
- nop
-#endif
-
-ENTRY(ret_from_irq)
- sw r16, [r28, TI_REGS]
-
-ENTRY(__ret_from_irq)
- lw r8, [r0, PT_PSR] # returning to kernel mode?
- andri.c r8, r8, KU_USER
- beq resume_kernel
-
-resume_userspace:
- disable_irq
- lw r6, [r28, TI_FLAGS] # current->work
- li r8, _TIF_WORK_MASK
- and.c r8, r8, r6 # ignoring syscall_trace
- bne work_pending
- nop
- j restore_all
- nop
-
-#ifdef CONFIG_PREEMPT
-resume_kernel:
- disable_irq
- lw r8, [r28, TI_PRE_COUNT]
- cmpz.c r8
- bne restore_all
-need_resched:
- lw r8, [r28, TI_FLAGS]
- andri.c r9, r8, _TIF_NEED_RESCHED
- beq restore_all
- lw r8, [r28, PT_PSR] # Interrupts off?
- andri.c r8, r8, 1
- beq restore_all
- bl preempt_schedule_irq
- nop
- j need_resched
- nop
-#endif
-
-ENTRY(ret_from_kernel_thread)
- bl schedule_tail # r4=struct task_struct *prev
- nop
- mv r4, r13
- brl r12
- j syscall_exit
-
-ENTRY(ret_from_fork)
- bl schedule_tail # r4=struct task_struct *prev
-
-ENTRY(syscall_exit)
- nop
- disable_irq
- lw r6, [r28, TI_FLAGS] # current->work
- li r8, _TIF_WORK_MASK
- and.c r8, r6, r8
- bne syscall_exit_work
-
-ENTRY(restore_all) # restore full frame
- RESTORE_ALL_AND_RET
-
-work_pending:
- andri.c r8, r6, _TIF_NEED_RESCHED # r6 is preloaded with TI_FLAGS
- beq work_notifysig
-work_resched:
- bl schedule
- nop
- disable_irq
- lw r6, [r28, TI_FLAGS]
- li r8, _TIF_WORK_MASK
- and.c r8, r6, r8 # is there any work to be done
- # other than syscall tracing?
- beq restore_all
- andri.c r8, r6, _TIF_NEED_RESCHED
- bne work_resched
-
-work_notifysig:
- mv r4, r0
- li r5, 0
- bl do_notify_resume # r6 already loaded
- nop
- j resume_userspace
- nop
-
-ENTRY(syscall_exit_work)
- li r8, _TIF_SYSCALL_TRACE
- and.c r8, r8, r6 # r6 is preloaded with TI_FLAGS
- beq work_pending # trace bit set?
- nop
- enable_irq
- mv r4, r0
- li r5, 1
- bl do_syscall_trace
- nop
- b resume_userspace
- nop
-
-.macro save_context reg
- sw r12, [\reg, THREAD_REG12];
- sw r13, [\reg, THREAD_REG13];
- sw r14, [\reg, THREAD_REG14];
- sw r15, [\reg, THREAD_REG15];
- sw r16, [\reg, THREAD_REG16];
- sw r17, [\reg, THREAD_REG17];
- sw r18, [\reg, THREAD_REG18];
- sw r19, [\reg, THREAD_REG19];
- sw r20, [\reg, THREAD_REG20];
- sw r21, [\reg, THREAD_REG21];
- sw r29, [\reg, THREAD_REG29];
- sw r2, [\reg, THREAD_REG2];
- sw r0, [\reg, THREAD_REG0]
-.endm
-
-.macro restore_context reg
- lw r12, [\reg, THREAD_REG12];
- lw r13, [\reg, THREAD_REG13];
- lw r14, [\reg, THREAD_REG14];
- lw r15, [\reg, THREAD_REG15];
- lw r16, [\reg, THREAD_REG16];
- lw r17, [\reg, THREAD_REG17];
- lw r18, [\reg, THREAD_REG18];
- lw r19, [\reg, THREAD_REG19];
- lw r20, [\reg, THREAD_REG20];
- lw r21, [\reg, THREAD_REG21];
- lw r29, [\reg, THREAD_REG29];
- lw r0, [\reg, THREAD_REG0];
- lw r2, [\reg, THREAD_REG2];
- lw r3, [\reg, THREAD_REG3]
-.endm
-
-/*
- * task_struct *resume(task_struct *prev, task_struct *next,
- * struct thread_info *next_ti)
- */
-ENTRY(resume)
- mfcr r9, cr0
- nop
- nop
- sw r9, [r4, THREAD_PSR]
- save_context r4
- sw r3, [r4, THREAD_REG3]
-
- mv r28, r6
- restore_context r5
- mv r8, r6
- addi r8, KERNEL_STACK_SIZE
- subi r8, 32
- la r9, kernelsp;
- sw r8, [r9];
-
- mfcr r9, cr0
- ldis r7, 0x00ff
- nop
- and r9, r9, r7
- lw r6, [r5, THREAD_PSR]
- not r7, r7
- and r6, r6, r7
- or r6, r6, r9
- mtcr r6, cr0
- nop; nop; nop; nop; nop
- br r3
-
-ENTRY(handle_sys)
- SAVE_ALL
- sw r8, [r0, 16] # argument 5 from user r8
- sw r9, [r0, 20] # argument 6 from user r9
- enable_irq
-
- sw r4, [r0, PT_ORIG_R4] #for restart syscall
- sw r7, [r0, PT_ORIG_R7] #for restart syscall
- sw r27, [r0, PT_IS_SYSCALL] # it from syscall
-
- lw r9, [r0, PT_EPC] # skip syscall on return
- addi r9, 4
- sw r9, [r0, PT_EPC]
-
- cmpi.c r27, __NR_syscalls # check syscall number
- bcs illegal_syscall
-
- slli r8, r27, 2 # get syscall routine
- la r11, sys_call_table
- add r11, r11, r8
- lw r10, [r11] # get syscall entry
-
- cmpz.c r10
- beq illegal_syscall
-
- lw r8, [r28, TI_FLAGS]
- li r9, _TIF_SYSCALL_TRACE
- and.c r8, r8, r9
- bne syscall_trace_entry
-
- brl r10 # Do The Real system call
-
- cmpi.c r4, 0
- blt 1f
- ldi r8, 0
- sw r8, [r0, PT_R7]
- b 2f
-1:
- cmpi.c r4, -MAX_ERRNO - 1
- ble 2f
- ldi r8, 0x1;
- sw r8, [r0, PT_R7]
- neg r4, r4
-2:
- sw r4, [r0, PT_R4] # save result
-
-syscall_return:
- disable_irq
- lw r6, [r28, TI_FLAGS] # current->work
- li r8, _TIF_WORK_MASK
- and.c r8, r6, r8
- bne syscall_return_work
- j restore_all
-
-syscall_return_work:
- j syscall_exit_work
-
-syscall_trace_entry:
- mv r16, r10
- mv r4, r0
- li r5, 0
- bl do_syscall_trace
-
- mv r8, r16
- lw r4, [r0, PT_R4] # Restore argument registers
- lw r5, [r0, PT_R5]
- lw r6, [r0, PT_R6]
- lw r7, [r0, PT_R7]
- brl r8
-
- li r8, -MAX_ERRNO - 1
- sw r8, [r0, PT_R7] # set error flag
-
- neg r4, r4 # error
- sw r4, [r0, PT_R0] # set flag for syscall
- # restarting
-1: sw r4, [r0, PT_R2] # result
- j syscall_exit
-
-illegal_syscall:
- ldi r4, -ENOSYS # error
- sw r4, [r0, PT_ORIG_R4]
- sw r4, [r0, PT_R4]
- ldi r9, 1 # set error flag
- sw r9, [r0, PT_R7]
- j syscall_return
-
-ENTRY(sys_rt_sigreturn)
- mv r4, r0
- la r8, score_rt_sigreturn
- br r8
+++ /dev/null
-/*
- * arch/score/kernel/head.S
- *
- * Score Processor version.
- *
- * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
- * Chen Liqin <liqin.chen@sunplusct.com>
- * Lennox Wu <lennox.wu@sunplusct.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see the file COPYING, or write
- * to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-#include <linux/init.h>
-#include <linux/linkage.h>
-
-#include <asm/asm-offsets.h>
-
- .extern start_kernel
- .global init_thread_union
- .global kernelsp
-
-__INIT
-ENTRY(_stext)
- la r30, __bss_start /* initialize BSS segment. */
- la r31, _end
- xor r8, r8, r8
-
-1: cmp.c r31, r30
- beq 2f
-
- sw r8, [r30] /* clean memory. */
- addi r30, 4
- b 1b
-
-2: la r28, init_thread_union /* set kernel stack. */
- mv r0, r28
- addi r0, KERNEL_STACK_SIZE - 32
- la r30, kernelsp
- sw r0, [r30]
- subi r0, 4*4
- xor r30, r30, r30
- ori r30, 0x02 /* enable MMU. */
- mtcr r30, cr4
- nop
- nop
- nop
- nop
- nop
- nop
- nop
-
- /* there is no parameter */
- xor r4, r4, r4
- xor r5, r5, r5
- xor r6, r6, r6
- xor r7, r7, r7
- la r30, start_kernel /* jump to init_arch */
- br r30
+++ /dev/null
-/*
- * arch/score/kernel/irq.c
- *
- * Score Processor version.
- *
- * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
- * Chen Liqin <liqin.chen@sunplusct.com>
- * Lennox Wu <lennox.wu@sunplusct.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see the file COPYING, or write
- * to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <linux/interrupt.h>
-#include <linux/kernel_stat.h>
-#include <linux/seq_file.h>
-
-#include <asm/io.h>
-
-/* the interrupt controller is hardcoded at this address */
-#define SCORE_PIC ((u32 __iomem __force *)0x95F50000)
-
-#define INT_PNDL 0
-#define INT_PNDH 1
-#define INT_PRIORITY_M 2
-#define INT_PRIORITY_SG0 4
-#define INT_PRIORITY_SG1 5
-#define INT_PRIORITY_SG2 6
-#define INT_PRIORITY_SG3 7
-#define INT_MASKL 8
-#define INT_MASKH 9
-
-/*
- * handles all normal device IRQs
- */
-asmlinkage void do_IRQ(int irq)
-{
- irq_enter();
- generic_handle_irq(irq);
- irq_exit();
-}
-
-static void score_mask(struct irq_data *d)
-{
- unsigned int irq_source = 63 - d->irq;
-
- if (irq_source < 32)
- __raw_writel((__raw_readl(SCORE_PIC + INT_MASKL) | \
- (1 << irq_source)), SCORE_PIC + INT_MASKL);
- else
- __raw_writel((__raw_readl(SCORE_PIC + INT_MASKH) | \
- (1 << (irq_source - 32))), SCORE_PIC + INT_MASKH);
-}
-
-static void score_unmask(struct irq_data *d)
-{
- unsigned int irq_source = 63 - d->irq;
-
- if (irq_source < 32)
- __raw_writel((__raw_readl(SCORE_PIC + INT_MASKL) & \
- ~(1 << irq_source)), SCORE_PIC + INT_MASKL);
- else
- __raw_writel((__raw_readl(SCORE_PIC + INT_MASKH) & \
- ~(1 << (irq_source - 32))), SCORE_PIC + INT_MASKH);
-}
-
-struct irq_chip score_irq_chip = {
- .name = "Score7-level",
- .irq_mask = score_mask,
- .irq_mask_ack = score_mask,
- .irq_unmask = score_unmask,
-};
-
-/*
- * initialise the interrupt system
- */
-void __init init_IRQ(void)
-{
- int index;
- unsigned long target_addr;
-
- for (index = 0; index < NR_IRQS; ++index)
- irq_set_chip_and_handler(index, &score_irq_chip,
- handle_level_irq);
-
- for (target_addr = IRQ_VECTOR_BASE_ADDR;
- target_addr <= IRQ_VECTOR_END_ADDR;
- target_addr += IRQ_VECTOR_SIZE)
- memcpy((void *)target_addr, \
- interrupt_exception_vector, IRQ_VECTOR_SIZE);
-
- __raw_writel(0xffffffff, SCORE_PIC + INT_MASKL);
- __raw_writel(0xffffffff, SCORE_PIC + INT_MASKH);
-
- __asm__ __volatile__(
- "mtcr %0, cr3\n\t"
- : : "r" (EXCEPTION_VECTOR_BASE_ADDR | \
- VECTOR_ADDRESS_OFFSET_MODE16));
-}
+++ /dev/null
-/*
- * arch/score/kernel/module.c
- *
- * Score Processor version.
- *
- * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
- * Chen Liqin <liqin.chen@sunplusct.com>
- * Lennox Wu <lennox.wu@sunplusct.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see the file COPYING, or write
- * to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <linux/moduleloader.h>
-#include <linux/module.h>
-#include <linux/vmalloc.h>
-
-int apply_relocate(Elf_Shdr *sechdrs, const char *strtab,
- unsigned int symindex, unsigned int relindex,
- struct module *me)
-{
- Elf32_Shdr *symsec = sechdrs + symindex;
- Elf32_Shdr *relsec = sechdrs + relindex;
- Elf32_Shdr *dstsec = sechdrs + relsec->sh_info;
- Elf32_Rel *rel = (void *)relsec->sh_addr;
- unsigned int i;
-
- for (i = 0; i < relsec->sh_size / sizeof(Elf32_Rel); i++, rel++) {
- unsigned long loc;
- Elf32_Sym *sym;
- s32 r_offset;
-
- r_offset = ELF32_R_SYM(rel->r_info);
- if ((r_offset < 0) ||
- (r_offset > (symsec->sh_size / sizeof(Elf32_Sym)))) {
- printk(KERN_ERR "%s: bad relocation, section %d reloc %d\n",
- me->name, relindex, i);
- return -ENOEXEC;
- }
-
- sym = ((Elf32_Sym *)symsec->sh_addr) + r_offset;
-
- if ((rel->r_offset < 0) ||
- (rel->r_offset > dstsec->sh_size - sizeof(u32))) {
- printk(KERN_ERR "%s: out of bounds relocation, "
- "section %d reloc %d offset %d size %d\n",
- me->name, relindex, i, rel->r_offset,
- dstsec->sh_size);
- return -ENOEXEC;
- }
-
- loc = dstsec->sh_addr + rel->r_offset;
- switch (ELF32_R_TYPE(rel->r_info)) {
- case R_SCORE_NONE:
- break;
- case R_SCORE_ABS32:
- *(unsigned long *)loc += sym->st_value;
- break;
- case R_SCORE_HI16:
- break;
- case R_SCORE_LO16: {
- unsigned long hi16_offset, offset;
- unsigned long uvalue;
- unsigned long temp, temp_hi;
- temp_hi = *((unsigned long *)loc - 1);
- temp = *(unsigned long *)loc;
-
- hi16_offset = (((((temp_hi) >> 16) & 0x3) << 15) |
- ((temp_hi) & 0x7fff)) >> 1;
- offset = ((temp >> 16 & 0x03) << 15) |
- ((temp & 0x7fff) >> 1);
- offset = (hi16_offset << 16) | (offset & 0xffff);
- uvalue = sym->st_value + offset;
- hi16_offset = (uvalue >> 16) << 1;
-
- temp_hi = ((temp_hi) & (~(0x37fff))) |
- (hi16_offset & 0x7fff) |
- ((hi16_offset << 1) & 0x30000);
- *((unsigned long *)loc - 1) = temp_hi;
-
- offset = (uvalue & 0xffff) << 1;
- temp = (temp & (~(0x37fff))) | (offset & 0x7fff) |
- ((offset << 1) & 0x30000);
- *(unsigned long *)loc = temp;
- break;
- }
- case R_SCORE_24: {
- unsigned long hi16_offset, offset;
- unsigned long uvalue;
- unsigned long temp;
-
- temp = *(unsigned long *)loc;
- offset = (temp & 0x03FF7FFE);
- hi16_offset = (offset & 0xFFFF0000);
- offset = (hi16_offset | ((offset & 0xFFFF) << 1)) >> 2;
-
- uvalue = (sym->st_value + offset) >> 1;
- uvalue = uvalue & 0x00ffffff;
-
- temp = (temp & 0xfc008001) |
- ((uvalue << 2) & 0x3ff0000) |
- ((uvalue & 0x3fff) << 1);
- *(unsigned long *)loc = temp;
- break;
- }
- default:
- printk(KERN_ERR "%s: unknown relocation: %u\n",
- me->name, ELF32_R_TYPE(rel->r_info));
- return -ENOEXEC;
- }
- }
-
- return 0;
-}
-
-/* Given an address, look for it in the module exception tables. */
-const struct exception_table_entry *search_module_dbetables(unsigned long addr)
-{
- return NULL;
-}
+++ /dev/null
-/*
- * arch/score/kernel/process.c
- *
- * Score Processor version.
- *
- * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
- * Chen Liqin <liqin.chen@sunplusct.com>
- * Lennox Wu <lennox.wu@sunplusct.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see the file COPYING, or write
- * to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <linux/module.h>
-#include <linux/reboot.h>
-#include <linux/elfcore.h>
-#include <linux/pm.h>
-#include <linux/rcupdate.h>
-#include <linux/sched/task.h>
-#include <linux/sched/task_stack.h>
-
-void (*pm_power_off)(void);
-EXPORT_SYMBOL(pm_power_off);
-
-/* If or when software machine-restart is implemented, add code here. */
-void machine_restart(char *command) {}
-
-/* If or when software machine-halt is implemented, add code here. */
-void machine_halt(void) {}
-
-/* If or when software machine-power-off is implemented, add code here. */
-void machine_power_off(void) {}
-
-void ret_from_fork(void);
-void ret_from_kernel_thread(void);
-
-void start_thread(struct pt_regs *regs, unsigned long pc, unsigned long sp)
-{
- unsigned long status;
-
- /* New thread loses kernel privileges. */
- status = regs->cp0_psr & ~(KU_MASK);
- status |= KU_USER;
- regs->cp0_psr = status;
- regs->cp0_epc = pc;
- regs->regs[0] = sp;
-}
-
-/*
- * When a process does an "exec", machine state like FPU and debug
- * registers need to be reset. This is a hook function for that.
- * Currently we don't have any such state to reset, so this is empty.
- */
-void flush_thread(void) {}
-
-/*
- * set up the kernel stack and exception frames for a new process
- */
-int copy_thread(unsigned long clone_flags, unsigned long usp,
- unsigned long arg, struct task_struct *p)
-{
- struct thread_info *ti = task_thread_info(p);
- struct pt_regs *childregs = task_pt_regs(p);
- struct pt_regs *regs = current_pt_regs();
-
- p->thread.reg0 = (unsigned long) childregs;
- if (unlikely(p->flags & PF_KTHREAD)) {
- memset(childregs, 0, sizeof(struct pt_regs));
- p->thread.reg12 = usp;
- p->thread.reg13 = arg;
- p->thread.reg3 = (unsigned long) ret_from_kernel_thread;
- } else {
- *childregs = *current_pt_regs();
- childregs->regs[7] = 0; /* Clear error flag */
- childregs->regs[4] = 0; /* Child gets zero as return value */
- if (usp)
- childregs->regs[0] = usp; /* user fork */
- p->thread.reg3 = (unsigned long) ret_from_fork;
- }
-
- p->thread.cp0_psr = 0;
-
- return 0;
-}
-
-/* Fill in the fpu structure for a core dump. */
-int dump_fpu(struct pt_regs *regs, elf_fpregset_t *r)
-{
- return 1;
-}
-
-unsigned long get_wchan(struct task_struct *task)
-{
- if (!task || task == current || task->state == TASK_RUNNING)
- return 0;
-
- if (!task_stack_page(task))
- return 0;
-
- return task_pt_regs(task)->cp0_epc;
-}
-
-unsigned long arch_align_stack(unsigned long sp)
-{
- return sp;
-}
+++ /dev/null
-/*
- * arch/score/kernel/ptrace.c
- *
- * Score Processor version.
- *
- * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
- * Chen Liqin <liqin.chen@sunplusct.com>
- * Lennox Wu <lennox.wu@sunplusct.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see the file COPYING, or write
- * to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <linux/elf.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/ptrace.h>
-#include <linux/regset.h>
-#include <linux/sched/task_stack.h>
-
-#include <linux/uaccess.h>
-
-/*
- * retrieve the contents of SCORE userspace general registers
- */
-static int genregs_get(struct task_struct *target,
- const struct user_regset *regset,
- unsigned int pos, unsigned int count,
- void *kbuf, void __user *ubuf)
-{
- const struct pt_regs *regs = task_pt_regs(target);
- int ret;
-
- /* skip 9 * sizeof(unsigned long) not use for pt_regs */
- ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf,
- 0, offsetof(struct pt_regs, regs));
-
- /* r0 - r31, cel, ceh, sr0, sr1, sr2, epc, ema, psr, ecr, condition */
- ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf,
- regs->regs,
- offsetof(struct pt_regs, regs),
- offsetof(struct pt_regs, cp0_condition));
-
- if (!ret)
- ret = user_regset_copyout_zero(&pos, &count, &kbuf, &ubuf,
- sizeof(struct pt_regs), -1);
-
- return ret;
-}
-
-/*
- * update the contents of the SCORE userspace general registers
- */
-static int genregs_set(struct task_struct *target,
- const struct user_regset *regset,
- unsigned int pos, unsigned int count,
- const void *kbuf, const void __user *ubuf)
-{
- struct pt_regs *regs = task_pt_regs(target);
- int ret;
-
- /* skip 9 * sizeof(unsigned long) */
- ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
- 0, offsetof(struct pt_regs, regs));
-
- /* r0 - r31, cel, ceh, sr0, sr1, sr2, epc, ema, psr, ecr, condition */
- ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
- regs->regs,
- offsetof(struct pt_regs, regs),
- offsetof(struct pt_regs, cp0_condition));
-
- if (!ret)
- ret = user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf,
- sizeof(struct pt_regs), -1);
-
- return ret;
-}
-
-/*
- * Define the register sets available on the score7 under Linux
- */
-enum score7_regset {
- REGSET_GENERAL,
-};
-
-static const struct user_regset score7_regsets[] = {
- [REGSET_GENERAL] = {
- .core_note_type = NT_PRSTATUS,
- .n = ELF_NGREG,
- .size = sizeof(long),
- .align = sizeof(long),
- .get = genregs_get,
- .set = genregs_set,
- },
-};
-
-static const struct user_regset_view user_score_native_view = {
- .name = "score7",
- .e_machine = EM_SCORE7,
- .regsets = score7_regsets,
- .n = ARRAY_SIZE(score7_regsets),
-};
-
-const struct user_regset_view *task_user_regset_view(struct task_struct *task)
-{
- return &user_score_native_view;
-}
-
-static int is_16bitinsn(unsigned long insn)
-{
- if ((insn & INSN32_MASK) == INSN32_MASK)
- return 0;
- else
- return 1;
-}
-
-int
-read_tsk_long(struct task_struct *child,
- unsigned long addr, unsigned long *res)
-{
- int copied;
-
- copied = access_process_vm(child, addr, res, sizeof(*res), FOLL_FORCE);
-
- return copied != sizeof(*res) ? -EIO : 0;
-}
-
-int
-read_tsk_short(struct task_struct *child,
- unsigned long addr, unsigned short *res)
-{
- int copied;
-
- copied = access_process_vm(child, addr, res, sizeof(*res), FOLL_FORCE);
-
- return copied != sizeof(*res) ? -EIO : 0;
-}
-
-static int
-write_tsk_short(struct task_struct *child,
- unsigned long addr, unsigned short val)
-{
- int copied;
-
- copied = access_process_vm(child, addr, &val, sizeof(val),
- FOLL_FORCE | FOLL_WRITE);
-
- return copied != sizeof(val) ? -EIO : 0;
-}
-
-static int
-write_tsk_long(struct task_struct *child,
- unsigned long addr, unsigned long val)
-{
- int copied;
-
- copied = access_process_vm(child, addr, &val, sizeof(val),
- FOLL_FORCE | FOLL_WRITE);
-
- return copied != sizeof(val) ? -EIO : 0;
-}
-
-void user_enable_single_step(struct task_struct *child)
-{
- /* far_epc is the target of branch */
- unsigned int epc, far_epc = 0;
- unsigned long epc_insn, far_epc_insn;
- int ninsn_type; /* next insn type 0=16b, 1=32b */
- unsigned int tmp, tmp2;
- struct pt_regs *regs = task_pt_regs(child);
- child->thread.single_step = 1;
- child->thread.ss_nextcnt = 1;
- epc = regs->cp0_epc;
-
- read_tsk_long(child, epc, &epc_insn);
-
- if (is_16bitinsn(epc_insn)) {
- if ((epc_insn & J16M) == J16) {
- tmp = epc_insn & 0xFFE;
- epc = (epc & 0xFFFFF000) | tmp;
- } else if ((epc_insn & B16M) == B16) {
- child->thread.ss_nextcnt = 2;
- tmp = (epc_insn & 0xFF) << 1;
- tmp = tmp << 23;
- tmp = (unsigned int)((int) tmp >> 23);
- far_epc = epc + tmp;
- epc += 2;
- } else if ((epc_insn & BR16M) == BR16) {
- child->thread.ss_nextcnt = 2;
- tmp = (epc_insn >> 4) & 0xF;
- far_epc = regs->regs[tmp];
- epc += 2;
- } else
- epc += 2;
- } else {
- if ((epc_insn & J32M) == J32) {
- tmp = epc_insn & 0x03FFFFFE;
- tmp2 = tmp & 0x7FFF;
- tmp = (((tmp >> 16) & 0x3FF) << 15) | tmp2;
- epc = (epc & 0xFFC00000) | tmp;
- } else if ((epc_insn & B32M) == B32) {
- child->thread.ss_nextcnt = 2;
- tmp = epc_insn & 0x03FFFFFE; /* discard LK bit */
- tmp2 = tmp & 0x3FF;
- tmp = (((tmp >> 16) & 0x3FF) << 10) | tmp2; /* 20bit */
- tmp = tmp << 12;
- tmp = (unsigned int)((int) tmp >> 12);
- far_epc = epc + tmp;
- epc += 4;
- } else if ((epc_insn & BR32M) == BR32) {
- child->thread.ss_nextcnt = 2;
- tmp = (epc_insn >> 16) & 0x1F;
- far_epc = regs->regs[tmp];
- epc += 4;
- } else
- epc += 4;
- }
-
- if (child->thread.ss_nextcnt == 1) {
- read_tsk_long(child, epc, &epc_insn);
-
- if (is_16bitinsn(epc_insn)) {
- write_tsk_short(child, epc, SINGLESTEP16_INSN);
- ninsn_type = 0;
- } else {
- write_tsk_long(child, epc, SINGLESTEP32_INSN);
- ninsn_type = 1;
- }
-
- if (ninsn_type == 0) { /* 16bits */
- child->thread.insn1_type = 0;
- child->thread.addr1 = epc;
- /* the insn may have 32bit data */
- child->thread.insn1 = (short)epc_insn;
- } else {
- child->thread.insn1_type = 1;
- child->thread.addr1 = epc;
- child->thread.insn1 = epc_insn;
- }
- } else {
- /* branch! have two target child->thread.ss_nextcnt=2 */
- read_tsk_long(child, epc, &epc_insn);
- read_tsk_long(child, far_epc, &far_epc_insn);
- if (is_16bitinsn(epc_insn)) {
- write_tsk_short(child, epc, SINGLESTEP16_INSN);
- ninsn_type = 0;
- } else {
- write_tsk_long(child, epc, SINGLESTEP32_INSN);
- ninsn_type = 1;
- }
-
- if (ninsn_type == 0) { /* 16bits */
- child->thread.insn1_type = 0;
- child->thread.addr1 = epc;
- /* the insn may have 32bit data */
- child->thread.insn1 = (short)epc_insn;
- } else {
- child->thread.insn1_type = 1;
- child->thread.addr1 = epc;
- child->thread.insn1 = epc_insn;
- }
-
- if (is_16bitinsn(far_epc_insn)) {
- write_tsk_short(child, far_epc, SINGLESTEP16_INSN);
- ninsn_type = 0;
- } else {
- write_tsk_long(child, far_epc, SINGLESTEP32_INSN);
- ninsn_type = 1;
- }
-
- if (ninsn_type == 0) { /* 16bits */
- child->thread.insn2_type = 0;
- child->thread.addr2 = far_epc;
- /* the insn may have 32bit data */
- child->thread.insn2 = (short)far_epc_insn;
- } else {
- child->thread.insn2_type = 1;
- child->thread.addr2 = far_epc;
- child->thread.insn2 = far_epc_insn;
- }
- }
-}
-
-void user_disable_single_step(struct task_struct *child)
-{
- if (child->thread.insn1_type == 0)
- write_tsk_short(child, child->thread.addr1,
- child->thread.insn1);
-
- if (child->thread.insn1_type == 1)
- write_tsk_long(child, child->thread.addr1,
- child->thread.insn1);
-
- if (child->thread.ss_nextcnt == 2) { /* branch */
- if (child->thread.insn1_type == 0)
- write_tsk_short(child, child->thread.addr1,
- child->thread.insn1);
- if (child->thread.insn1_type == 1)
- write_tsk_long(child, child->thread.addr1,
- child->thread.insn1);
- if (child->thread.insn2_type == 0)
- write_tsk_short(child, child->thread.addr2,
- child->thread.insn2);
- if (child->thread.insn2_type == 1)
- write_tsk_long(child, child->thread.addr2,
- child->thread.insn2);
- }
-
- child->thread.single_step = 0;
- child->thread.ss_nextcnt = 0;
-}
-
-void ptrace_disable(struct task_struct *child)
-{
- user_disable_single_step(child);
-}
-
-long
-arch_ptrace(struct task_struct *child, long request,
- unsigned long addr, unsigned long data)
-{
- int ret;
- unsigned long __user *datap = (void __user *)data;
-
- switch (request) {
- case PTRACE_GETREGS:
- ret = copy_regset_to_user(child, &user_score_native_view,
- REGSET_GENERAL,
- 0, sizeof(struct pt_regs),
- datap);
- break;
-
- case PTRACE_SETREGS:
- ret = copy_regset_from_user(child, &user_score_native_view,
- REGSET_GENERAL,
- 0, sizeof(struct pt_regs),
- datap);
- break;
-
- default:
- ret = ptrace_request(child, request, addr, data);
- break;
- }
-
- return ret;
-}
-
-/*
- * Notification of system call entry/exit
- * - triggered by current->work.syscall_trace
- */
-asmlinkage void do_syscall_trace(struct pt_regs *regs, int entryexit)
-{
- if (!(current->ptrace & PT_PTRACED))
- return;
-
- if (!test_thread_flag(TIF_SYSCALL_TRACE))
- return;
-
- /* The 0x80 provides a way for the tracing parent to distinguish
- between a syscall stop and SIGTRAP delivery. */
- ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD) ?
- 0x80 : 0));
-
- /*
- * this isn't the same as continuing with a signal, but it will do
- * for normal use. strace only continues with a signal if the
- * stopping signal is not SIGTRAP. -brl
- */
- if (current->exit_code) {
- send_sig(current->exit_code, current, 1);
- current->exit_code = 0;
- }
-}
+++ /dev/null
-/*
- * arch/score/kernel/setup.c
- *
- * Score Processor version.
- *
- * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
- * Chen Liqin <liqin.chen@sunplusct.com>
- * Lennox Wu <lennox.wu@sunplusct.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see the file COPYING, or write
- * to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <linux/bootmem.h>
-#include <linux/initrd.h>
-#include <linux/ioport.h>
-#include <linux/memblock.h>
-#include <linux/mm.h>
-#include <linux/seq_file.h>
-#include <linux/screen_info.h>
-
-#include <asm-generic/sections.h>
-#include <asm/setup.h>
-
-struct screen_info screen_info;
-unsigned long kernelsp;
-
-static char command_line[COMMAND_LINE_SIZE];
-static struct resource code_resource = { .name = "Kernel code",};
-static struct resource data_resource = { .name = "Kernel data",};
-
-static void __init bootmem_init(void)
-{
- unsigned long start_pfn, bootmap_size;
- unsigned long size = initrd_end - initrd_start;
-
- start_pfn = PFN_UP(__pa(&_end));
-
- min_low_pfn = PFN_UP(MEMORY_START);
- max_low_pfn = PFN_UP(MEMORY_START + MEMORY_SIZE);
- max_mapnr = max_low_pfn - min_low_pfn;
-
- /* Initialize the boot-time allocator with low memory only. */
- bootmap_size = init_bootmem_node(NODE_DATA(0), start_pfn,
- min_low_pfn, max_low_pfn);
- memblock_add_node(PFN_PHYS(min_low_pfn),
- PFN_PHYS(max_low_pfn - min_low_pfn), 0);
-
- free_bootmem(PFN_PHYS(start_pfn),
- (max_low_pfn - start_pfn) << PAGE_SHIFT);
- memory_present(0, start_pfn, max_low_pfn);
-
- /* Reserve space for the bootmem bitmap. */
- reserve_bootmem(PFN_PHYS(start_pfn), bootmap_size, BOOTMEM_DEFAULT);
-
- if (size == 0) {
- printk(KERN_INFO "Initrd not found or empty");
- goto disable;
- }
-
- if (__pa(initrd_end) > PFN_PHYS(max_low_pfn)) {
- printk(KERN_ERR "Initrd extends beyond end of memory");
- goto disable;
- }
-
- /* Reserve space for the initrd bitmap. */
- reserve_bootmem(__pa(initrd_start), size, BOOTMEM_DEFAULT);
- initrd_below_start_ok = 1;
-
- pr_info("Initial ramdisk at: 0x%lx (%lu bytes)\n",
- initrd_start, size);
- return;
-disable:
- printk(KERN_CONT " - disabling initrd\n");
- initrd_start = 0;
- initrd_end = 0;
-}
-
-static void __init resource_init(void)
-{
- struct resource *res;
-
- code_resource.start = __pa(&_text);
- code_resource.end = __pa(&_etext) - 1;
- data_resource.start = __pa(&_etext);
- data_resource.end = __pa(&_edata) - 1;
-
- res = alloc_bootmem(sizeof(struct resource));
- res->name = "System RAM";
- res->start = MEMORY_START;
- res->end = MEMORY_START + MEMORY_SIZE - 1;
- res->flags = IORESOURCE_SYSTEM_RAM | IORESOURCE_BUSY;
- request_resource(&iomem_resource, res);
-
- request_resource(res, &code_resource);
- request_resource(res, &data_resource);
-}
-
-void __init setup_arch(char **cmdline_p)
-{
- randomize_va_space = 0;
- *cmdline_p = command_line;
-
- cpu_cache_init();
- tlb_init();
- bootmem_init();
- paging_init();
- resource_init();
-}
-
-static int show_cpuinfo(struct seq_file *m, void *v)
-{
- unsigned long n = (unsigned long) v - 1;
-
- seq_printf(m, "processor\t\t: %ld\n\n", n);
- return 0;
-}
-
-static void *c_start(struct seq_file *m, loff_t *pos)
-{
- unsigned long i = *pos;
-
- return i < 1 ? (void *) (i + 1) : NULL;
-}
-
-static void *c_next(struct seq_file *m, void *v, loff_t *pos)
-{
- ++*pos;
- return c_start(m, pos);
-}
-
-static void c_stop(struct seq_file *m, void *v)
-{
-}
-
-const struct seq_operations cpuinfo_op = {
- .start = c_start,
- .next = c_next,
- .stop = c_stop,
- .show = show_cpuinfo,
-};
-
-static int __init topology_init(void)
-{
- return 0;
-}
-
-subsys_initcall(topology_init);
+++ /dev/null
-/*
- * arch/score/kernel/signal.c
- *
- * Score Processor version.
- *
- * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
- * Chen Liqin <liqin.chen@sunplusct.com>
- * Lennox Wu <lennox.wu@sunplusct.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see the file COPYING, or write
- * to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <linux/errno.h>
-#include <linux/signal.h>
-#include <linux/ptrace.h>
-#include <linux/unistd.h>
-#include <linux/uaccess.h>
-#include <linux/tracehook.h>
-
-#include <asm/cacheflush.h>
-#include <asm/syscalls.h>
-#include <asm/ucontext.h>
-
-struct rt_sigframe {
- u32 rs_ass[4]; /* argument save space */
- u32 rs_code[2]; /* signal trampoline */
- struct siginfo rs_info;
- struct ucontext rs_uc;
-};
-
-static int setup_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc)
-{
- int err = 0;
- unsigned long reg;
-
- reg = regs->cp0_epc; err |= __put_user(reg, &sc->sc_pc);
- err |= __put_user(regs->cp0_psr, &sc->sc_psr);
- err |= __put_user(regs->cp0_condition, &sc->sc_condition);
-
-
-#define save_gp_reg(i) { \
- reg = regs->regs[i]; \
- err |= __put_user(reg, &sc->sc_regs[i]); \
-} while (0)
- save_gp_reg(0); save_gp_reg(1); save_gp_reg(2);
- save_gp_reg(3); save_gp_reg(4); save_gp_reg(5);
- save_gp_reg(6); save_gp_reg(7); save_gp_reg(8);
- save_gp_reg(9); save_gp_reg(10); save_gp_reg(11);
- save_gp_reg(12); save_gp_reg(13); save_gp_reg(14);
- save_gp_reg(15); save_gp_reg(16); save_gp_reg(17);
- save_gp_reg(18); save_gp_reg(19); save_gp_reg(20);
- save_gp_reg(21); save_gp_reg(22); save_gp_reg(23);
- save_gp_reg(24); save_gp_reg(25); save_gp_reg(26);
- save_gp_reg(27); save_gp_reg(28); save_gp_reg(29);
-#undef save_gp_reg
-
- reg = regs->ceh; err |= __put_user(reg, &sc->sc_mdceh);
- reg = regs->cel; err |= __put_user(reg, &sc->sc_mdcel);
- err |= __put_user(regs->cp0_ecr, &sc->sc_ecr);
- err |= __put_user(regs->cp0_ema, &sc->sc_ema);
-
- return err;
-}
-
-static int restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc)
-{
- int err = 0;
- u32 reg;
-
- err |= __get_user(regs->cp0_epc, &sc->sc_pc);
- err |= __get_user(regs->cp0_condition, &sc->sc_condition);
-
- err |= __get_user(reg, &sc->sc_mdceh);
- regs->ceh = (int) reg;
- err |= __get_user(reg, &sc->sc_mdcel);
- regs->cel = (int) reg;
-
- err |= __get_user(reg, &sc->sc_psr);
- regs->cp0_psr = (int) reg;
- err |= __get_user(reg, &sc->sc_ecr);
- regs->cp0_ecr = (int) reg;
- err |= __get_user(reg, &sc->sc_ema);
- regs->cp0_ema = (int) reg;
-
-#define restore_gp_reg(i) do { \
- err |= __get_user(reg, &sc->sc_regs[i]); \
- regs->regs[i] = reg; \
-} while (0)
- restore_gp_reg(0); restore_gp_reg(1); restore_gp_reg(2);
- restore_gp_reg(3); restore_gp_reg(4); restore_gp_reg(5);
- restore_gp_reg(6); restore_gp_reg(7); restore_gp_reg(8);
- restore_gp_reg(9); restore_gp_reg(10); restore_gp_reg(11);
- restore_gp_reg(12); restore_gp_reg(13); restore_gp_reg(14);
- restore_gp_reg(15); restore_gp_reg(16); restore_gp_reg(17);
- restore_gp_reg(18); restore_gp_reg(19); restore_gp_reg(20);
- restore_gp_reg(21); restore_gp_reg(22); restore_gp_reg(23);
- restore_gp_reg(24); restore_gp_reg(25); restore_gp_reg(26);
- restore_gp_reg(27); restore_gp_reg(28); restore_gp_reg(29);
-#undef restore_gp_reg
-
- return err;
-}
-
-/*
- * Determine which stack to use..
- */
-static void __user *get_sigframe(struct k_sigaction *ka,
- struct pt_regs *regs, size_t frame_size)
-{
- unsigned long sp;
-
- /* Default to using normal stack */
- sp = regs->regs[0];
- sp -= 32;
-
- /* This is the X/Open sanctioned signal stack switching. */
- if ((ka->sa.sa_flags & SA_ONSTACK) && (!on_sig_stack(sp)))
- sp = current->sas_ss_sp + current->sas_ss_size;
-
- return (void __user*)((sp - frame_size) & ~7);
-}
-
-asmlinkage long
-score_rt_sigreturn(struct pt_regs *regs)
-{
- struct rt_sigframe __user *frame;
- sigset_t set;
- int sig;
-
- /* Always make any pending restarted system calls return -EINTR */
- current->restart_block.fn = do_no_restart_syscall;
-
- frame = (struct rt_sigframe __user *) regs->regs[0];
- if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
- goto badframe;
- if (__copy_from_user(&set, &frame->rs_uc.uc_sigmask, sizeof(set)))
- goto badframe;
-
- set_current_blocked(&set);
-
- sig = restore_sigcontext(regs, &frame->rs_uc.uc_mcontext);
- if (sig < 0)
- goto badframe;
- else if (sig)
- force_sig(sig, current);
-
- if (restore_altstack(&frame->rs_uc.uc_stack))
- goto badframe;
- regs->is_syscall = 0;
-
- __asm__ __volatile__(
- "mv\tr0, %0\n\t"
- "la\tr8, syscall_exit\n\t"
- "br\tr8\n\t"
- : : "r" (regs) : "r8");
-
-badframe:
- force_sig(SIGSEGV, current);
-
- return 0;
-}
-
-static int setup_rt_frame(struct ksignal *ksig, struct pt_regs *regs,
- sigset_t *set)
-{
- struct rt_sigframe __user *frame;
- int err = 0;
-
- frame = get_sigframe(&ksig->ka, regs, sizeof(*frame));
- if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
- return -EFAULT;
-
- /*
- * Set up the return code ...
- *
- * li v0, __NR_rt_sigreturn
- * syscall
- */
- err |= __put_user(0x87788000 + __NR_rt_sigreturn*2,
- frame->rs_code + 0);
- err |= __put_user(0x80008002, frame->rs_code + 1);
- flush_cache_sigtramp((unsigned long) frame->rs_code);
-
- err |= copy_siginfo_to_user(&frame->rs_info, &ksig->info);
- err |= __put_user(0, &frame->rs_uc.uc_flags);
- err |= __put_user(NULL, &frame->rs_uc.uc_link);
- err |= __save_altstack(&frame->rs_uc.uc_stack, regs->regs[0]);
- err |= setup_sigcontext(regs, &frame->rs_uc.uc_mcontext);
- err |= __copy_to_user(&frame->rs_uc.uc_sigmask, set, sizeof(*set));
-
- if (err)
- return -EFAULT;
-
- regs->regs[0] = (unsigned long) frame;
- regs->regs[3] = (unsigned long) frame->rs_code;
- regs->regs[4] = ksig->sig;
- regs->regs[5] = (unsigned long) &frame->rs_info;
- regs->regs[6] = (unsigned long) &frame->rs_uc;
- regs->regs[29] = (unsigned long) ksig->ka.sa.sa_handler;
- regs->cp0_epc = (unsigned long) ksig->ka.sa.sa_handler;
-
- return 0;
-}
-
-static void handle_signal(struct ksignal *ksig, struct pt_regs *regs)
-{
- int ret;
-
- if (regs->is_syscall) {
- switch (regs->regs[4]) {
- case ERESTART_RESTARTBLOCK:
- case ERESTARTNOHAND:
- regs->regs[4] = EINTR;
- break;
- case ERESTARTSYS:
- if (!(ksig->ka.sa.sa_flags & SA_RESTART)) {
- regs->regs[4] = EINTR;
- break;
- }
- case ERESTARTNOINTR:
- regs->regs[4] = regs->orig_r4;
- regs->regs[7] = regs->orig_r7;
- regs->cp0_epc -= 8;
- }
-
- regs->is_syscall = 0;
- }
-
- /*
- * Set up the stack frame
- */
- ret = setup_rt_frame(ksig, regs, sigmask_to_save());
-
- signal_setup_done(ret, ksig, 0);
-}
-
-static void do_signal(struct pt_regs *regs)
-{
- struct ksignal ksig;
-
- /*
- * We want the common case to go fast, which is why we may in certain
- * cases get here from kernel mode. Just return without doing anything
- * if so.
- */
- if (!user_mode(regs))
- return;
-
- if (get_signal(&ksig)) {
- /* Actually deliver the signal. */
- handle_signal(&ksig, regs);
- return;
- }
-
- if (regs->is_syscall) {
- if (regs->regs[4] == ERESTARTNOHAND ||
- regs->regs[4] == ERESTARTSYS ||
- regs->regs[4] == ERESTARTNOINTR) {
- regs->regs[4] = regs->orig_r4;
- regs->regs[7] = regs->orig_r7;
- regs->cp0_epc -= 8;
- }
-
- if (regs->regs[4] == ERESTART_RESTARTBLOCK) {
- regs->regs[27] = __NR_restart_syscall;
- regs->regs[4] = regs->orig_r4;
- regs->regs[7] = regs->orig_r7;
- regs->cp0_epc -= 8;
- }
-
- regs->is_syscall = 0; /* Don't deal with this again. */
- }
-
- /*
- * If there's no signal to deliver, we just put the saved sigmask
- * back
- */
- restore_saved_sigmask();
-}
-
-/*
- * notification of userspace execution resumption
- * - triggered by the TIF_WORK_MASK flags
- */
-asmlinkage void do_notify_resume(struct pt_regs *regs, void *unused,
- __u32 thread_info_flags)
-{
- /* deal with pending signal delivery */
- if (thread_info_flags & _TIF_SIGPENDING)
- do_signal(regs);
- if (thread_info_flags & _TIF_NOTIFY_RESUME) {
- clear_thread_flag(TIF_NOTIFY_RESUME);
- tracehook_notify_resume(regs);
- }
-}
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-#include <linux/syscalls.h>
-#include <linux/signal.h>
-#include <linux/unistd.h>
-
-#include <asm/syscalls.h>
-
-#undef __SYSCALL
-#define __SYSCALL(nr, call) [nr] = (call),
-
-void *sys_call_table[__NR_syscalls] = {
-#include <asm/unistd.h>
-};
+++ /dev/null
-/*
- * arch/score/kernel/syscall.c
- *
- * Score Processor version.
- *
- * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
- * Chen Liqin <liqin.chen@sunplusct.com>
- * Lennox Wu <lennox.wu@sunplusct.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see the file COPYING, or write
- * to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <linux/file.h>
-#include <linux/fs.h>
-#include <linux/mm.h>
-#include <linux/mman.h>
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/unistd.h>
-#include <linux/syscalls.h>
-#include <asm/syscalls.h>
-
-asmlinkage long
-sys_mmap2(unsigned long addr, unsigned long len, unsigned long prot,
- unsigned long flags, unsigned long fd, unsigned long pgoff)
-{
- return sys_mmap_pgoff(addr, len, prot, flags, fd, pgoff);
-}
-
-asmlinkage long
-sys_mmap(unsigned long addr, unsigned long len, unsigned long prot,
- unsigned long flags, unsigned long fd, off_t offset)
-{
- if (unlikely(offset & ~PAGE_MASK))
- return -EINVAL;
- return sys_mmap_pgoff(addr, len, prot, flags, fd, offset >> PAGE_SHIFT);
-}
+++ /dev/null
-/*
- * arch/score/kernel/time.c
- *
- * Score Processor version.
- *
- * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
- * Chen Liqin <liqin.chen@sunplusct.com>
- * Lennox Wu <lennox.wu@sunplusct.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see the file COPYING, or write
- * to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <linux/clockchips.h>
-#include <linux/interrupt.h>
-
-#include <asm/scoreregs.h>
-
-static irqreturn_t timer_interrupt(int irq, void *dev_id)
-{
- struct clock_event_device *evdev = dev_id;
-
- /* clear timer interrupt flag */
- outl(1, P_TIMER0_CPP_REG);
- evdev->event_handler(evdev);
-
- return IRQ_HANDLED;
-}
-
-static struct irqaction timer_irq = {
- .handler = timer_interrupt,
- .flags = IRQF_TIMER,
- .name = "timer",
-};
-
-static int score_timer_set_next_event(unsigned long delta,
- struct clock_event_device *evdev)
-{
- outl((TMR_M_PERIODIC | TMR_IE_ENABLE), P_TIMER0_CTRL);
- outl(delta, P_TIMER0_PRELOAD);
- outl(inl(P_TIMER0_CTRL) | TMR_ENABLE, P_TIMER0_CTRL);
-
- return 0;
-}
-
-static int score_timer_set_periodic(struct clock_event_device *evt)
-{
- outl((TMR_M_PERIODIC | TMR_IE_ENABLE), P_TIMER0_CTRL);
- outl(SYSTEM_CLOCK / HZ, P_TIMER0_PRELOAD);
- outl(inl(P_TIMER0_CTRL) | TMR_ENABLE, P_TIMER0_CTRL);
- return 0;
-}
-
-static struct clock_event_device score_clockevent = {
- .name = "score_clockevent",
- .features = CLOCK_EVT_FEAT_PERIODIC,
- .shift = 16,
- .set_next_event = score_timer_set_next_event,
- .set_state_periodic = score_timer_set_periodic,
-};
-
-void __init time_init(void)
-{
- timer_irq.dev_id = &score_clockevent;
- setup_irq(IRQ_TIMER , &timer_irq);
-
- /* setup COMPARE clockevent */
- score_clockevent.mult = div_sc(SYSTEM_CLOCK, NSEC_PER_SEC,
- score_clockevent.shift);
- score_clockevent.max_delta_ns = clockevent_delta2ns((u32)~0,
- &score_clockevent);
- score_clockevent.max_delta_ticks = (u32)~0;
- score_clockevent.min_delta_ns = clockevent_delta2ns(50,
- &score_clockevent) + 1;
- score_clockevent.min_delta_ticks = 50;
- score_clockevent.cpumask = cpumask_of(0);
- clockevents_register_device(&score_clockevent);
-}
+++ /dev/null
-/*
- * arch/score/kernel/traps.c
- *
- * Score Processor version.
- *
- * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
- * Chen Liqin <liqin.chen@sunplusct.com>
- * Lennox Wu <lennox.wu@sunplusct.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see the file COPYING, or write
- * to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <linux/extable.h>
-#include <linux/ptrace.h>
-#include <linux/sched/mm.h>
-#include <linux/sched/signal.h>
-#include <linux/sched/debug.h>
-#include <linux/mm_types.h>
-
-#include <asm/cacheflush.h>
-#include <asm/irq.h>
-#include <asm/irq_regs.h>
-#include <linux/uaccess.h>
-
-unsigned long exception_handlers[32];
-
-/*
- * The architecture-independent show_stack generator
- */
-void show_stack(struct task_struct *task, unsigned long *sp)
-{
- int i;
- long stackdata;
-
- sp = sp ? sp : (unsigned long *)&sp;
-
- printk(KERN_NOTICE "Stack: ");
- i = 1;
- while ((long) sp & (PAGE_SIZE - 1)) {
- if (i && ((i % 8) == 0))
- printk(KERN_NOTICE "\n");
- if (i > 40) {
- printk(KERN_NOTICE " ...");
- break;
- }
-
- if (__get_user(stackdata, sp++)) {
- printk(KERN_NOTICE " (Bad stack address)");
- break;
- }
-
- printk(KERN_NOTICE " %08lx", stackdata);
- i++;
- }
- printk(KERN_NOTICE "\n");
-}
-
-static void show_trace(long *sp)
-{
- int i;
- long addr;
-
- sp = sp ? sp : (long *) &sp;
-
- printk(KERN_NOTICE "Call Trace: ");
- i = 1;
- while ((long) sp & (PAGE_SIZE - 1)) {
- if (__get_user(addr, sp++)) {
- if (i && ((i % 6) == 0))
- printk(KERN_NOTICE "\n");
- printk(KERN_NOTICE " (Bad stack address)\n");
- break;
- }
-
- if (kernel_text_address(addr)) {
- if (i && ((i % 6) == 0))
- printk(KERN_NOTICE "\n");
- if (i > 40) {
- printk(KERN_NOTICE " ...");
- break;
- }
-
- printk(KERN_NOTICE " [<%08lx>]", addr);
- i++;
- }
- }
- printk(KERN_NOTICE "\n");
-}
-
-static void show_code(unsigned int *pc)
-{
- long i;
-
- printk(KERN_NOTICE "\nCode:");
-
- for (i = -3; i < 6; i++) {
- unsigned long insn;
- if (__get_user(insn, pc + i)) {
- printk(KERN_NOTICE " (Bad address in epc)\n");
- break;
- }
- printk(KERN_NOTICE "%c%08lx%c", (i ? ' ' : '<'),
- insn, (i ? ' ' : '>'));
- }
-}
-
-/*
- * FIXME: really the generic show_regs should take a const pointer argument.
- */
-void show_regs(struct pt_regs *regs)
-{
- show_regs_print_info(KERN_DEFAULT);
-
- printk("r0 : %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
- regs->regs[0], regs->regs[1], regs->regs[2], regs->regs[3],
- regs->regs[4], regs->regs[5], regs->regs[6], regs->regs[7]);
- printk("r8 : %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
- regs->regs[8], regs->regs[9], regs->regs[10], regs->regs[11],
- regs->regs[12], regs->regs[13], regs->regs[14], regs->regs[15]);
- printk("r16: %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
- regs->regs[16], regs->regs[17], regs->regs[18], regs->regs[19],
- regs->regs[20], regs->regs[21], regs->regs[22], regs->regs[23]);
- printk("r24: %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
- regs->regs[24], regs->regs[25], regs->regs[26], regs->regs[27],
- regs->regs[28], regs->regs[29], regs->regs[30], regs->regs[31]);
-
- printk("CEH : %08lx\n", regs->ceh);
- printk("CEL : %08lx\n", regs->cel);
-
- printk("EMA:%08lx, epc:%08lx %s\nPSR: %08lx\nECR:%08lx\nCondition : %08lx\n",
- regs->cp0_ema, regs->cp0_epc, print_tainted(), regs->cp0_psr,
- regs->cp0_ecr, regs->cp0_condition);
-}
-
-static void show_registers(struct pt_regs *regs)
-{
- show_regs(regs);
- printk(KERN_NOTICE "Process %s (pid: %d, stackpage=%08lx)\n",
- current->comm, current->pid, (unsigned long) current);
- show_stack(current_thread_info()->task, (long *) regs->regs[0]);
- show_trace((long *) regs->regs[0]);
- show_code((unsigned int *) regs->cp0_epc);
- printk(KERN_NOTICE "\n");
-}
-
-void __die(const char *str, struct pt_regs *regs, const char *file,
- const char *func, unsigned long line)
-{
- console_verbose();
- printk("%s", str);
- if (file && func)
- printk(" in %s:%s, line %ld", file, func, line);
- printk(":\n");
- show_registers(regs);
- do_exit(SIGSEGV);
-}
-
-void __die_if_kernel(const char *str, struct pt_regs *regs,
- const char *file, const char *func, unsigned long line)
-{
- if (!user_mode(regs))
- __die(str, regs, file, func, line);
-}
-
-asmlinkage void do_adelinsn(struct pt_regs *regs)
-{
- printk("do_ADE-linsn:ema:0x%08lx:epc:0x%08lx\n",
- regs->cp0_ema, regs->cp0_epc);
- die_if_kernel("do_ade execution Exception\n", regs);
- force_sig(SIGBUS, current);
-}
-
-asmlinkage void do_adedata(struct pt_regs *regs)
-{
- const struct exception_table_entry *fixup;
- fixup = search_exception_tables(regs->cp0_epc);
- if (fixup) {
- regs->cp0_epc = fixup->fixup;
- return;
- }
- printk("do_ADE-data:ema:0x%08lx:epc:0x%08lx\n",
- regs->cp0_ema, regs->cp0_epc);
- die_if_kernel("do_ade execution Exception\n", regs);
- force_sig(SIGBUS, current);
-}
-
-asmlinkage void do_pel(struct pt_regs *regs)
-{
- die_if_kernel("do_pel execution Exception", regs);
- force_sig(SIGFPE, current);
-}
-
-asmlinkage void do_cee(struct pt_regs *regs)
-{
- die_if_kernel("do_cee execution Exception", regs);
- force_sig(SIGFPE, current);
-}
-
-asmlinkage void do_cpe(struct pt_regs *regs)
-{
- die_if_kernel("do_cpe execution Exception", regs);
- force_sig(SIGFPE, current);
-}
-
-asmlinkage void do_be(struct pt_regs *regs)
-{
- die_if_kernel("do_be execution Exception", regs);
- force_sig(SIGBUS, current);
-}
-
-asmlinkage void do_ov(struct pt_regs *regs)
-{
- siginfo_t info;
-
- die_if_kernel("do_ov execution Exception", regs);
-
- info.si_code = FPE_INTOVF;
- info.si_signo = SIGFPE;
- info.si_errno = 0;
- info.si_addr = (void *)regs->cp0_epc;
- force_sig_info(SIGFPE, &info, current);
-}
-
-asmlinkage void do_tr(struct pt_regs *regs)
-{
- die_if_kernel("do_tr execution Exception", regs);
- force_sig(SIGTRAP, current);
-}
-
-asmlinkage void do_ri(struct pt_regs *regs)
-{
- unsigned long epc_insn;
- unsigned long epc = regs->cp0_epc;
-
- read_tsk_long(current, epc, &epc_insn);
- if (current->thread.single_step == 1) {
- if ((epc == current->thread.addr1) ||
- (epc == current->thread.addr2)) {
- user_disable_single_step(current);
- force_sig(SIGTRAP, current);
- return;
- } else
- BUG();
- } else if ((epc_insn == BREAKPOINT32_INSN) ||
- ((epc_insn & 0x0000FFFF) == 0x7002) ||
- ((epc_insn & 0xFFFF0000) == 0x70020000)) {
- force_sig(SIGTRAP, current);
- return;
- } else {
- die_if_kernel("do_ri execution Exception", regs);
- force_sig(SIGILL, current);
- }
-}
-
-asmlinkage void do_ccu(struct pt_regs *regs)
-{
- die_if_kernel("do_ccu execution Exception", regs);
- force_sig(SIGILL, current);
-}
-
-asmlinkage void do_reserved(struct pt_regs *regs)
-{
- /*
- * Game over - no way to handle this if it ever occurs. Most probably
- * caused by a new unknown cpu type or after another deadly
- * hard/software error.
- */
- die_if_kernel("do_reserved execution Exception", regs);
- show_regs(regs);
- panic("Caught reserved exception - should not happen.");
-}
-
-/*
- * NMI exception handler.
- */
-void nmi_exception_handler(struct pt_regs *regs)
-{
- die_if_kernel("nmi_exception_handler execution Exception", regs);
- die("NMI", regs);
-}
-
-/* Install CPU exception handler */
-void *set_except_vector(int n, void *addr)
-{
- unsigned long handler = (unsigned long) addr;
- unsigned long old_handler = exception_handlers[n];
-
- exception_handlers[n] = handler;
- return (void *)old_handler;
-}
-
-void __init trap_init(void)
-{
- int i;
-
- pgd_current = (unsigned long)init_mm.pgd;
- /* DEBUG EXCEPTION */
- memcpy((void *)DEBUG_VECTOR_BASE_ADDR,
- &debug_exception_vector, DEBUG_VECTOR_SIZE);
- /* NMI EXCEPTION */
- memcpy((void *)GENERAL_VECTOR_BASE_ADDR,
- &general_exception_vector, GENERAL_VECTOR_SIZE);
-
- /*
- * Initialise exception handlers
- */
- for (i = 0; i <= 31; i++)
- set_except_vector(i, handle_reserved);
-
- set_except_vector(1, handle_nmi);
- set_except_vector(2, handle_adelinsn);
- set_except_vector(3, handle_tlb_refill);
- set_except_vector(4, handle_tlb_invaild);
- set_except_vector(5, handle_ibe);
- set_except_vector(6, handle_pel);
- set_except_vector(7, handle_sys);
- set_except_vector(8, handle_ccu);
- set_except_vector(9, handle_ri);
- set_except_vector(10, handle_tr);
- set_except_vector(11, handle_adedata);
- set_except_vector(12, handle_adedata);
- set_except_vector(13, handle_tlb_refill);
- set_except_vector(14, handle_tlb_invaild);
- set_except_vector(15, handle_mod);
- set_except_vector(16, handle_cee);
- set_except_vector(17, handle_cpe);
- set_except_vector(18, handle_dbe);
- flush_icache_range(DEBUG_VECTOR_BASE_ADDR, IRQ_VECTOR_BASE_ADDR);
-
- mmgrab(&init_mm);
- current->active_mm = &init_mm;
- cpu_cache_init();
-}
+++ /dev/null
-/*
- * arch/score/kernel/vmlinux.lds.S
- *
- * Score Processor version.
- *
- * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
- * Chen Liqin <liqin.chen@sunplusct.com>
- * Lennox Wu <lennox.wu@sunplusct.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see the file COPYING, or write
- * to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <asm-generic/vmlinux.lds.h>
-#include <asm/thread_info.h>
-#include <asm/page.h>
-
-OUTPUT_ARCH(score)
-ENTRY(_stext)
-
-jiffies = jiffies_64;
-
-SECTIONS
-{
- . = CONFIG_MEMORY_START + 0x2000;
- /* read-only */
- .text : {
- _text = .; /* Text and read-only data */
- TEXT_TEXT
- SCHED_TEXT
- CPUIDLE_TEXT
- LOCK_TEXT
- KPROBES_TEXT
- *(.text.*)
- *(.fixup)
- . = ALIGN (4) ;
- _etext = .; /* End of text section */
- }
-
- . = ALIGN(16);
- _sdata = .; /* Start of data section */
- RODATA
-
- EXCEPTION_TABLE(16)
-
- RW_DATA_SECTION(32, PAGE_SIZE, THREAD_SIZE)
-
- /* We want the small data sections together, so single-instruction offsets
- can access them all, and initialized data all before uninitialized, so
- we can shorten the on-disk segment size. */
- . = ALIGN(8);
- .sdata : {
- *(.sdata)
- }
- _edata = .; /* End of data section */
-
- /* will be freed after init */
- . = ALIGN(PAGE_SIZE); /* Init code and data */
- __init_begin = .;
-
- INIT_TEXT_SECTION(PAGE_SIZE)
- INIT_DATA_SECTION(16)
-
- /* .exit.text is discarded at runtime, not link time, to deal with
- * references from .rodata
- */
- .exit.text : {
- EXIT_TEXT
- }
- .exit.data : {
- EXIT_DATA
- }
- . = ALIGN(PAGE_SIZE);
- __init_end = .;
- /* freed after init ends here */
-
- BSS_SECTION(0, 0, 0)
- _end = .;
-}
+++ /dev/null
-#
-# Makefile for SCORE-specific library files..
-#
-
-lib-y += string.o checksum.o checksum_copy.o
-
-# libgcc-style stuff needed in the kernel
-obj-y += ashldi3.o ashrdi3.o cmpdi2.o lshrdi3.o ucmpdi2.o
+++ /dev/null
-/*
- * arch/score/lib/ashldi3.c
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see the file COPYING, or write
- * to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <linux/module.h>
-#include "libgcc.h"
-
-long long __ashldi3(long long u, word_type b)
-{
- DWunion uu, w;
- word_type bm;
-
- if (b == 0)
- return u;
-
- uu.ll = u;
- bm = 32 - b;
-
- if (bm <= 0) {
- w.s.low = 0;
- w.s.high = (unsigned int) uu.s.low << -bm;
- } else {
- const unsigned int carries = (unsigned int) uu.s.low >> bm;
-
- w.s.low = (unsigned int) uu.s.low << b;
- w.s.high = ((unsigned int) uu.s.high << b) | carries;
- }
-
- return w.ll;
-}
-EXPORT_SYMBOL(__ashldi3);
+++ /dev/null
-/*
- * arch/score/lib/ashrdi3.c
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see the file COPYING, or write
- * to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <linux/module.h>
-#include "libgcc.h"
-
-long long __ashrdi3(long long u, word_type b)
-{
- DWunion uu, w;
- word_type bm;
-
- if (b == 0)
- return u;
-
- uu.ll = u;
- bm = 32 - b;
-
- if (bm <= 0) {
- /* w.s.high = 1..1 or 0..0 */
- w.s.high =
- uu.s.high >> 31;
- w.s.low = uu.s.high >> -bm;
- } else {
- const unsigned int carries = (unsigned int) uu.s.high << bm;
-
- w.s.high = uu.s.high >> b;
- w.s.low = ((unsigned int) uu.s.low >> b) | carries;
- }
-
- return w.ll;
-}
-EXPORT_SYMBOL(__ashrdi3);
+++ /dev/null
-/*
- * arch/score/lib/csum_partial.S
- *
- * Score Processor version.
- *
- * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
- * Lennox Wu <lennox.wu@sunplusct.com>
- * Chen Liqin <liqin.chen@sunplusct.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see the file COPYING, or write
- * to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-#include <linux/linkage.h>
-
-#define ADDC(sum,reg) \
- add sum, sum, reg; \
- cmp.c reg, sum; \
- bleu 9f; \
- addi sum, 0x1; \
-9:
-
-#define CSUM_BIGCHUNK(src, offset, sum) \
- lw r8, [src, offset + 0x00]; \
- lw r9, [src, offset + 0x04]; \
- lw r10, [src, offset + 0x08]; \
- lw r11, [src, offset + 0x0c]; \
- ADDC(sum, r8); \
- ADDC(sum, r9); \
- ADDC(sum, r10); \
- ADDC(sum, r11); \
- lw r8, [src, offset + 0x10]; \
- lw r9, [src, offset + 0x14]; \
- lw r10, [src, offset + 0x18]; \
- lw r11, [src, offset + 0x1c]; \
- ADDC(sum, r8); \
- ADDC(sum, r9); \
- ADDC(sum, r10); \
- ADDC(sum, r11); \
-
-#define src r4
-#define dest r5
-#define sum r27
-
- .text
-/* unknown src alignment and < 8 bytes to go */
-small_csumcpy:
- mv r5, r10
- ldi r9, 0x0
- cmpi.c r25, 0x1
- beq pass_small_set_t7 /*already set, jump to pass_small_set_t7*/
- andri.c r25,r4 , 0x1 /*Is src 2 bytes aligned?*/
-
-pass_small_set_t7:
- beq aligned
- cmpi.c r5, 0x0
- beq fold
- lbu r9, [src]
- slli r9,r9, 0x8 /*Little endian*/
- ADDC(sum, r9)
- addi src, 0x1
- subi.c r5, 0x1
-
- /*len still a full word */
-aligned:
- andri.c r8, r5, 0x4 /*Len >= 4?*/
- beq len_less_4bytes
-
- /* Still a full word (4byte) to go,and the src is word aligned.*/
- andri.c r8, src, 0x3 /*src is 4bytes aligned, so use LW!!*/
- beq four_byte_aligned
- lhu r9, [src]
- addi src, 2
- ADDC(sum, r9)
- lhu r9, [src]
- addi src, 2
- ADDC(sum, r9)
- b len_less_4bytes
-
-four_byte_aligned: /* Len >=4 and four byte aligned */
- lw r9, [src]
- addi src, 4
- ADDC(sum, r9)
-
-len_less_4bytes: /* 2 byte aligned aligned and length<4B */
- andri.c r8, r5, 0x2
- beq len_less_2bytes
- lhu r9, [src]
- addi src, 0x2 /* src+=2 */
- ADDC(sum, r9)
-
-len_less_2bytes: /* len = 1 */
- andri.c r8, r5, 0x1
- beq fold /* less than 2 and not equal 1--> len=0 -> fold */
- lbu r9, [src]
-
-fold_ADDC:
- ADDC(sum, r9)
-fold:
- /* fold checksum */
- slli r26, sum, 16
- add sum, sum, r26
- cmp.c r26, sum
- srli sum, sum, 16
- bleu 1f /* if r26<=sum */
- addi sum, 0x1 /* r26>sum */
-1:
- /* odd buffer alignment? r25 was set in csum_partial */
- cmpi.c r25, 0x0
- beq 1f
- slli r26, sum, 8
- srli sum, sum, 8
- or sum, sum, r26
- andi sum, 0xffff
-1:
- .set optimize
- /* Add the passed partial csum. */
- ADDC(sum, r6)
- mv r4, sum
- br r3
- .set volatile
-
- .align 5
-ENTRY(csum_partial)
- ldi sum, 0
- ldi r25, 0
- mv r10, r5
- cmpi.c r5, 0x8
- blt small_csumcpy /* < 8(signed) bytes to copy */
- cmpi.c r5, 0x0
- beq out
- andri.c r25, src, 0x1 /* odd buffer? */
-
- beq word_align
-hword_align: /* 1 byte */
- lbu r8, [src]
- subi r5, 0x1
- slli r8, r8, 8
- ADDC(sum, r8)
- addi src, 0x1
-
-word_align: /* 2 bytes */
- andri.c r8, src, 0x2 /* 4bytes(dword)_aligned? */
- beq dword_align /* not, maybe dword_align */
- lhu r8, [src]
- subi r5, 0x2
- ADDC(sum, r8)
- addi src, 0x2
-
-dword_align: /* 4bytes */
- mv r26, r5 /* maybe useless when len >=56 */
- ldi r8, 56
- cmp.c r8, r5
- bgtu do_end_words /* if a1(len)<t0(56) ,unsigned */
- andri.c r26, src, 0x4
- beq qword_align
- lw r8, [src]
- subi r5, 0x4
- ADDC(sum, r8)
- addi src, 0x4
-
-qword_align: /* 8 bytes */
- andri.c r26, src, 0x8
- beq oword_align
- lw r8, [src, 0x0]
- lw r9, [src, 0x4]
- subi r5, 0x8 /* len-=0x8 */
- ADDC(sum, r8)
- ADDC(sum, r9)
- addi src, 0x8
-
-oword_align: /* 16bytes */
- andri.c r26, src, 0x10
- beq begin_movement
- lw r10, [src, 0x08]
- lw r11, [src, 0x0c]
- lw r8, [src, 0x00]
- lw r9, [src, 0x04]
- ADDC(sum, r10)
- ADDC(sum, r11)
- ADDC(sum, r8)
- ADDC(sum, r9)
- subi r5, 0x10
- addi src, 0x10
-
-begin_movement:
- srli.c r26, r5, 0x7 /* len>=128? */
- beq 1f /* len<128 */
-
-/* r26 is the result that computed in oword_align */
-move_128bytes:
- CSUM_BIGCHUNK(src, 0x00, sum)
- CSUM_BIGCHUNK(src, 0x20, sum)
- CSUM_BIGCHUNK(src, 0x40, sum)
- CSUM_BIGCHUNK(src, 0x60, sum)
- subi.c r26, 0x01 /* r26 equals len/128 */
- addi src, 0x80
- bne move_128bytes
-
-1: /* len<128,we process 64byte here */
- andri.c r10, r5, 0x40
- beq 1f
-
-move_64bytes:
- CSUM_BIGCHUNK(src, 0x00, sum)
- CSUM_BIGCHUNK(src, 0x20, sum)
- addi src, 0x40
-
-1: /* len<64 */
- andri r26, r5, 0x1c /* 0x1c=28 */
- andri.c r10, r5, 0x20
- beq do_end_words /* decided by andri */
-
-move_32bytes:
- CSUM_BIGCHUNK(src, 0x00, sum)
- andri r26, r5, 0x1c
- addri src, src, 0x20
-
-do_end_words: /* len<32 */
- /* r26 was set already in dword_align */
- cmpi.c r26, 0x0
- beq maybe_end_cruft /* len<28 or len<56 */
- srli r26, r26, 0x2
-
-end_words:
- lw r8, [src]
- subi.c r26, 0x1 /* unit is 4 byte */
- ADDC(sum, r8)
- addi src, 0x4
- cmpi.c r26, 0x0
- bne end_words /* r26!=0 */
-
-maybe_end_cruft: /* len<4 */
- andri r10, r5, 0x3
-
-small_memcpy:
- mv r5, r10
- j small_csumcpy
-
-out:
- mv r4, sum
- br r3
-
-END(csum_partial)
+++ /dev/null
-/*
- * arch/score/lib/csum_partial_copy.c
- *
- * Score Processor version.
- *
- * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
- * Lennox Wu <lennox.wu@sunplusct.com>
- * Chen Liqin <liqin.chen@sunplusct.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see the file COPYING, or write
- * to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <net/checksum.h>
-
-#include <linux/uaccess.h>
-
-unsigned int csum_partial_copy(const char *src, char *dst,
- int len, unsigned int sum)
-{
- sum = csum_partial(src, len, sum);
- memcpy(dst, src, len);
-
- return sum;
-}
-
-unsigned int csum_partial_copy_from_user(const char *src, char *dst,
- int len, unsigned int sum,
- int *err_ptr)
-{
- int missing;
-
- missing = copy_from_user(dst, src, len);
- if (missing) {
- memset(dst + len - missing, 0, missing);
- *err_ptr = -EFAULT;
- }
-
- return csum_partial(dst, len, sum);
-}
-EXPORT_SYMBOL(csum_partial_copy_from_user);
+++ /dev/null
-/*
- * arch/score/lib/cmpdi2.c
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see the file COPYING, or write
- * to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <linux/module.h>
-#include "libgcc.h"
-
-word_type __cmpdi2(long long a, long long b)
-{
- const DWunion au = {
- .ll = a
- };
- const DWunion bu = {
- .ll = b
- };
-
- if (au.s.high < bu.s.high)
- return 0;
- else if (au.s.high > bu.s.high)
- return 2;
-
- if ((unsigned int) au.s.low < (unsigned int) bu.s.low)
- return 0;
- else if ((unsigned int) au.s.low > (unsigned int) bu.s.low)
- return 2;
-
- return 1;
-}
-EXPORT_SYMBOL(__cmpdi2);
+++ /dev/null
-/*
- * arch/score/lib/libgcc.h
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see the file COPYING, or write
- * to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-
-#ifndef __ASM_LIBGCC_H
-#define __ASM_LIBGCC_H
-
-#include <asm/byteorder.h>
-
-typedef int word_type __attribute__((mode(__word__)));
-
-struct DWstruct {
- int low, high;
-};
-
-typedef union {
- struct DWstruct s;
- long long ll;
-} DWunion;
-
-#endif /* __ASM_LIBGCC_H */
+++ /dev/null
-/*
- * arch/score/lib/lshrdi3.c
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see the file COPYING, or write
- * to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-
-#include <linux/module.h>
-#include "libgcc.h"
-
-long long __lshrdi3(long long u, word_type b)
-{
- DWunion uu, w;
- word_type bm;
-
- if (b == 0)
- return u;
-
- uu.ll = u;
- bm = 32 - b;
-
- if (bm <= 0) {
- w.s.high = 0;
- w.s.low = (unsigned int) uu.s.high >> -bm;
- } else {
- const unsigned int carries = (unsigned int) uu.s.high << bm;
-
- w.s.high = (unsigned int) uu.s.high >> b;
- w.s.low = ((unsigned int) uu.s.low >> b) | carries;
- }
-
- return w.ll;
-}
-EXPORT_SYMBOL(__lshrdi3);
+++ /dev/null
-/*
- * arch/score/lib/string.S
- *
- * Score Processor version.
- *
- * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
- * Chen Liqin <liqin.chen@sunplusct.com>
- * Lennox Wu <lennox.wu@sunplusct.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see the file COPYING, or write
- * to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <linux/linkage.h>
-#include <asm-generic/errno.h>
-
- .text
- .align 2
-ENTRY(__strncpy_from_user)
- cmpi.c r6, 0
- mv r9, r6
- ble .L2
-0: lbu r7, [r5]
- ldi r8, 0
-1: sb r7, [r4]
-2: lb r6, [r5]
- cmp.c r6, r8
- beq .L2
-
-.L5:
- addi r8, 1
- cmp.c r8, r9
- beq .L7
-3: lbu r6, [r5, 1]+
-4: sb r6, [r4, 1]+
-5: lb r7, [r5]
- cmpi.c r7, 0
- bne .L5
-.L7:
- mv r4, r8
- br r3
-.L2:
- ldi r8, 0
- mv r4, r8
- br r3
- .section .fixup, "ax"
-99:
- ldi r4, -EFAULT
- br r3
- .previous
- .section __ex_table, "a"
- .align 2
- .word 0b ,99b
- .word 1b ,99b
- .word 2b ,99b
- .word 3b ,99b
- .word 4b ,99b
- .word 5b ,99b
- .previous
-
- .align 2
-ENTRY(__strnlen_user)
- cmpi.c r5, 0
- ble .L11
-0: lb r6, [r4]
- ldi r7, 0
- cmp.c r6, r7
- beq .L11
-.L15:
- addi r7, 1
- cmp.c r7, r5
- beq .L23
-1: lb r6, [r4,1]+
- cmpi.c r6, 0
- bne .L15
-.L23:
- addri r4, r7, 1
- br r3
-
-.L11:
- ldi r4, 1
- br r3
- .section .fixup, "ax"
-99:
- ldi r4, 0
- br r3
-
- .section __ex_table,"a"
- .align 2
- .word 0b, 99b
- .word 1b, 99b
- .previous
-
- .align 2
-ENTRY(__copy_tofrom_user)
- cmpi.c r6, 0
- mv r10,r6
- beq .L32
- ldi r9, 0
-.L34:
- add r6, r5, r9
-0: lbu r8, [r6]
- add r7, r4, r9
-1: sb r8, [r7]
- addi r9, 1
- cmp.c r9, r10
- bne .L34
-.L32:
- ldi r4, 0
- br r3
- .section .fixup, "ax"
-99:
- sub r4, r10, r9
- br r3
- .previous
- .section __ex_table, "a"
- .align 2
- .word 0b, 99b
- .word 1b, 99b
- .previous
-
- .align 2
-ENTRY(__clear_user)
- cmpi.c r5, 0
- beq .L38
- ldi r6, 0
- mv r7, r6
-.L40:
- addi r6, 1
-0: sb r7, [r4]+, 1
- cmp.c r6, r5
- bne .L40
-.L38:
- ldi r4, 0
- br r3
-
- .section .fixup, "ax"
-99:
- br r3
- .previous
- .section __ex_table, "a"
- .align 2
- .word 0b, 99b
- .previous
+++ /dev/null
-/*
- * arch/score/lib/ucmpdi2.c
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see the file COPYING, or write
- * to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <linux/module.h>
-#include "libgcc.h"
-
-word_type __ucmpdi2(unsigned long long a, unsigned long long b)
-{
- const DWunion au = {.ll = a};
- const DWunion bu = {.ll = b};
-
- if ((unsigned int) au.s.high < (unsigned int) bu.s.high)
- return 0;
- else if ((unsigned int) au.s.high > (unsigned int) bu.s.high)
- return 2;
- if ((unsigned int) au.s.low < (unsigned int) bu.s.low)
- return 0;
- else if ((unsigned int) au.s.low > (unsigned int) bu.s.low)
- return 2;
- return 1;
-}
-EXPORT_SYMBOL(__ucmpdi2);
+++ /dev/null
-#
-# Makefile for the Linux/SCORE-specific parts of the memory manager.
-#
-
-obj-y += cache.o extable.o fault.o init.o \
- tlb-miss.o tlb-score.o pgtable.o
+++ /dev/null
-/*
- * arch/score/mm/cache.c
- *
- * Score Processor version.
- *
- * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
- * Lennox Wu <lennox.wu@sunplusct.com>
- * Chen Liqin <liqin.chen@sunplusct.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see the file COPYING, or write
- * to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <linux/init.h>
-#include <linux/linkage.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/fs.h>
-
-#include <asm/mmu_context.h>
-
-/*
-Just flush entire Dcache!!
-You must ensure the page doesn't include instructions, because
-the function will not flush the Icache.
-The addr must be cache aligned.
-*/
-static void flush_data_cache_page(unsigned long addr)
-{
- unsigned int i;
- for (i = 0; i < (PAGE_SIZE / L1_CACHE_BYTES); i += L1_CACHE_BYTES) {
- __asm__ __volatile__(
- "cache 0x0e, [%0, 0]\n"
- "cache 0x1a, [%0, 0]\n"
- "nop\n"
- : : "r" (addr));
- addr += L1_CACHE_BYTES;
- }
-}
-
-void flush_dcache_page(struct page *page)
-{
- struct address_space *mapping = page_mapping(page);
- unsigned long addr;
-
- if (PageHighMem(page))
- return;
- if (mapping && !mapping_mapped(mapping)) {
- set_bit(PG_dcache_dirty, &(page)->flags);
- return;
- }
-
- /*
- * We could delay the flush for the !page_mapping case too. But that
- * case is for exec env/arg pages and those are %99 certainly going to
- * get faulted into the tlb (and thus flushed) anyways.
- */
- addr = (unsigned long) page_address(page);
- flush_data_cache_page(addr);
-}
-EXPORT_SYMBOL(flush_dcache_page);
-
-/* called by update_mmu_cache. */
-void __update_cache(struct vm_area_struct *vma, unsigned long address,
- pte_t pte)
-{
- struct page *page;
- unsigned long pfn, addr;
- int exec = (vma->vm_flags & VM_EXEC);
-
- pfn = pte_pfn(pte);
- if (unlikely(!pfn_valid(pfn)))
- return;
- page = pfn_to_page(pfn);
- if (page_mapping(page) && test_bit(PG_dcache_dirty, &(page)->flags)) {
- addr = (unsigned long) page_address(page);
- if (exec)
- flush_data_cache_page(addr);
- clear_bit(PG_dcache_dirty, &(page)->flags);
- }
-}
-
-static inline void setup_protection_map(void)
-{
- protection_map[0] = PAGE_NONE;
- protection_map[1] = PAGE_READONLY;
- protection_map[2] = PAGE_COPY;
- protection_map[3] = PAGE_COPY;
- protection_map[4] = PAGE_READONLY;
- protection_map[5] = PAGE_READONLY;
- protection_map[6] = PAGE_COPY;
- protection_map[7] = PAGE_COPY;
- protection_map[8] = PAGE_NONE;
- protection_map[9] = PAGE_READONLY;
- protection_map[10] = PAGE_SHARED;
- protection_map[11] = PAGE_SHARED;
- protection_map[12] = PAGE_READONLY;
- protection_map[13] = PAGE_READONLY;
- protection_map[14] = PAGE_SHARED;
- protection_map[15] = PAGE_SHARED;
-}
-
-void cpu_cache_init(void)
-{
- setup_protection_map();
-}
-
-void flush_icache_all(void)
-{
- __asm__ __volatile__(
- "la r8, flush_icache_all\n"
- "cache 0x10, [r8, 0]\n"
- "nop\nnop\nnop\nnop\nnop\nnop\n"
- : : : "r8");
-}
-
-void flush_dcache_all(void)
-{
- __asm__ __volatile__(
- "la r8, flush_dcache_all\n"
- "cache 0x1f, [r8, 0]\n"
- "nop\nnop\nnop\nnop\nnop\nnop\n"
- "cache 0x1a, [r8, 0]\n"
- "nop\nnop\nnop\nnop\nnop\nnop\n"
- : : : "r8");
-}
-
-void flush_cache_all(void)
-{
- __asm__ __volatile__(
- "la r8, flush_cache_all\n"
- "cache 0x10, [r8, 0]\n"
- "nop\nnop\nnop\nnop\nnop\nnop\n"
- "cache 0x1f, [r8, 0]\n"
- "nop\nnop\nnop\nnop\nnop\nnop\n"
- "cache 0x1a, [r8, 0]\n"
- "nop\nnop\nnop\nnop\nnop\nnop\n"
- : : : "r8");
-}
-
-void flush_cache_mm(struct mm_struct *mm)
-{
- if (!(mm->context))
- return;
- flush_cache_all();
-}
-
-/*if we flush a range precisely , the processing may be very long.
-We must check each page in the range whether present. If the page is present,
-we can flush the range in the page. Be careful, the range may be cross two
-page, a page is present and another is not present.
-*/
-/*
-The interface is provided in hopes that the port can find
-a suitably efficient method for removing multiple page
-sized regions from the cache.
-*/
-void flush_cache_range(struct vm_area_struct *vma,
- unsigned long start, unsigned long end)
-{
- struct mm_struct *mm = vma->vm_mm;
- int exec = vma->vm_flags & VM_EXEC;
- pgd_t *pgdp;
- pud_t *pudp;
- pmd_t *pmdp;
- pte_t *ptep;
-
- if (!(mm->context))
- return;
-
- pgdp = pgd_offset(mm, start);
- pudp = pud_offset(pgdp, start);
- pmdp = pmd_offset(pudp, start);
- ptep = pte_offset(pmdp, start);
-
- while (start <= end) {
- unsigned long tmpend;
- pgdp = pgd_offset(mm, start);
- pudp = pud_offset(pgdp, start);
- pmdp = pmd_offset(pudp, start);
- ptep = pte_offset(pmdp, start);
-
- if (!(pte_val(*ptep) & _PAGE_PRESENT)) {
- start = (start + PAGE_SIZE) & ~(PAGE_SIZE - 1);
- continue;
- }
- tmpend = (start | (PAGE_SIZE-1)) > end ?
- end : (start | (PAGE_SIZE-1));
-
- flush_dcache_range(start, tmpend);
- if (exec)
- flush_icache_range(start, tmpend);
- start = (start + PAGE_SIZE) & ~(PAGE_SIZE - 1);
- }
-}
-
-void flush_cache_page(struct vm_area_struct *vma,
- unsigned long addr, unsigned long pfn)
-{
- int exec = vma->vm_flags & VM_EXEC;
- unsigned long kaddr = 0xa0000000 | (pfn << PAGE_SHIFT);
-
- flush_dcache_range(kaddr, kaddr + PAGE_SIZE);
-
- if (exec)
- flush_icache_range(kaddr, kaddr + PAGE_SIZE);
-}
-
-void flush_cache_sigtramp(unsigned long addr)
-{
- __asm__ __volatile__(
- "cache 0x02, [%0, 0]\n"
- "nop\nnop\nnop\nnop\nnop\n"
- "cache 0x02, [%0, 0x4]\n"
- "nop\nnop\nnop\nnop\nnop\n"
-
- "cache 0x0d, [%0, 0]\n"
- "nop\nnop\nnop\nnop\nnop\n"
- "cache 0x0d, [%0, 0x4]\n"
- "nop\nnop\nnop\nnop\nnop\n"
-
- "cache 0x1a, [%0, 0]\n"
- "nop\nnop\nnop\nnop\nnop\n"
- : : "r" (addr));
-}
-
-/*
-1. WB and invalid a cache line of Dcache
-2. Drain Write Buffer
-the range must be smaller than PAGE_SIZE
-*/
-void flush_dcache_range(unsigned long start, unsigned long end)
-{
- int size, i;
-
- start = start & ~(L1_CACHE_BYTES - 1);
- end = end & ~(L1_CACHE_BYTES - 1);
- size = end - start;
- /* flush dcache to ram, and invalidate dcache lines. */
- for (i = 0; i < size; i += L1_CACHE_BYTES) {
- __asm__ __volatile__(
- "cache 0x0e, [%0, 0]\n"
- "nop\nnop\nnop\nnop\nnop\n"
- "cache 0x1a, [%0, 0]\n"
- "nop\nnop\nnop\nnop\nnop\n"
- : : "r" (start));
- start += L1_CACHE_BYTES;
- }
-}
-
-void flush_icache_range(unsigned long start, unsigned long end)
-{
- int size, i;
- start = start & ~(L1_CACHE_BYTES - 1);
- end = end & ~(L1_CACHE_BYTES - 1);
-
- size = end - start;
- /* invalidate icache lines. */
- for (i = 0; i < size; i += L1_CACHE_BYTES) {
- __asm__ __volatile__(
- "cache 0x02, [%0, 0]\n"
- "nop\nnop\nnop\nnop\nnop\n"
- : : "r" (start));
- start += L1_CACHE_BYTES;
- }
-}
-EXPORT_SYMBOL(flush_icache_range);
+++ /dev/null
-/*
- * arch/score/mm/extable.c
- *
- * Score Processor version.
- *
- * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
- * Lennox Wu <lennox.wu@sunplusct.com>
- * Chen Liqin <liqin.chen@sunplusct.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see the file COPYING, or write
- * to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <linux/extable.h>
-#include <linux/ptrace.h>
-#include <asm/extable.h>
-
-int fixup_exception(struct pt_regs *regs)
-{
- const struct exception_table_entry *fixup;
-
- fixup = search_exception_tables(regs->cp0_epc);
- if (fixup) {
- regs->cp0_epc = fixup->fixup;
- return 1;
- }
- return 0;
-}
+++ /dev/null
-/*
- * arch/score/mm/fault.c
- *
- * Score Processor version.
- *
- * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
- * Lennox Wu <lennox.wu@sunplusct.com>
- * Chen Liqin <liqin.chen@sunplusct.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see the file COPYING, or write
- * to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <linux/errno.h>
-#include <linux/interrupt.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/mman.h>
-#include <linux/extable.h>
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/string.h>
-#include <linux/types.h>
-#include <linux/ptrace.h>
-#include <linux/uaccess.h>
-
-/*
- * This routine handles page faults. It determines the address,
- * and the problem, and then passes it off to one of the appropriate
- * routines.
- */
-asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long write,
- unsigned long address)
-{
- struct vm_area_struct *vma = NULL;
- struct task_struct *tsk = current;
- struct mm_struct *mm = tsk->mm;
- const int field = sizeof(unsigned long) * 2;
- unsigned long flags = 0;
- siginfo_t info;
- int fault;
-
- info.si_code = SEGV_MAPERR;
-
- /*
- * We fault-in kernel-space virtual memory on-demand. The
- * 'reference' page table is init_mm.pgd.
- *
- * NOTE! We MUST NOT take any locks for this case. We may
- * be in an interrupt or a critical region, and should
- * only copy the information from the master page table,
- * nothing more.
- */
- if (unlikely(address >= VMALLOC_START && address <= VMALLOC_END))
- goto vmalloc_fault;
-#ifdef MODULE_START
- if (unlikely(address >= MODULE_START && address < MODULE_END))
- goto vmalloc_fault;
-#endif
-
- /*
- * If we're in an interrupt or have no user
- * context, we must not take the fault..
- */
- if (pagefault_disabled() || !mm)
- goto bad_area_nosemaphore;
-
- if (user_mode(regs))
- flags |= FAULT_FLAG_USER;
-
- down_read(&mm->mmap_sem);
- vma = find_vma(mm, address);
- if (!vma)
- goto bad_area;
- if (vma->vm_start <= address)
- goto good_area;
- if (!(vma->vm_flags & VM_GROWSDOWN))
- goto bad_area;
- if (expand_stack(vma, address))
- goto bad_area;
- /*
- * Ok, we have a good vm_area for this memory access, so
- * we can handle it..
- */
-good_area:
- info.si_code = SEGV_ACCERR;
-
- if (write) {
- if (!(vma->vm_flags & VM_WRITE))
- goto bad_area;
- flags |= FAULT_FLAG_WRITE;
- } else {
- if (!(vma->vm_flags & (VM_READ | VM_WRITE | VM_EXEC)))
- goto bad_area;
- }
-
- /*
- * If for any reason at all we couldn't handle the fault,
- * make sure we exit gracefully rather than endlessly redo
- * the fault.
- */
- fault = handle_mm_fault(vma, address, flags);
- if (unlikely(fault & VM_FAULT_ERROR)) {
- if (fault & VM_FAULT_OOM)
- goto out_of_memory;
- else if (fault & VM_FAULT_SIGSEGV)
- goto bad_area;
- else if (fault & VM_FAULT_SIGBUS)
- goto do_sigbus;
- BUG();
- }
- if (fault & VM_FAULT_MAJOR)
- tsk->maj_flt++;
- else
- tsk->min_flt++;
-
- up_read(&mm->mmap_sem);
- return;
-
- /*
- * Something tried to access memory that isn't in our memory map..
- * Fix it, but check if it's kernel or user first..
- */
-bad_area:
- up_read(&mm->mmap_sem);
-
-bad_area_nosemaphore:
- /* User mode accesses just cause a SIGSEGV */
- if (user_mode(regs)) {
- tsk->thread.cp0_badvaddr = address;
- tsk->thread.error_code = write;
- info.si_signo = SIGSEGV;
- info.si_errno = 0;
- /* info.si_code has been set above */
- info.si_addr = (void __user *) address;
- force_sig_info(SIGSEGV, &info, tsk);
- return;
- }
-
-no_context:
- /* Are we prepared to handle this kernel fault? */
- if (fixup_exception(regs)) {
- current->thread.cp0_baduaddr = address;
- return;
- }
-
- /*
- * Oops. The kernel tried to access some bad page. We'll have to
- * terminate things with extreme prejudice.
- */
- bust_spinlocks(1);
-
- printk(KERN_ALERT "CPU %d Unable to handle kernel paging request at "
- "virtual address %0*lx, epc == %0*lx, ra == %0*lx\n",
- 0, field, address, field, regs->cp0_epc,
- field, regs->regs[3]);
- die("Oops", regs);
-
- /*
- * We ran out of memory, or some other thing happened to us that made
- * us unable to handle the page fault gracefully.
- */
-out_of_memory:
- up_read(&mm->mmap_sem);
- if (!user_mode(regs))
- goto no_context;
- pagefault_out_of_memory();
- return;
-
-do_sigbus:
- up_read(&mm->mmap_sem);
- /* Kernel mode? Handle exceptions or die */
- if (!user_mode(regs))
- goto no_context;
- else
- /*
- * Send a sigbus, regardless of whether we were in kernel
- * or user mode.
- */
- tsk->thread.cp0_badvaddr = address;
- info.si_signo = SIGBUS;
- info.si_errno = 0;
- info.si_code = BUS_ADRERR;
- info.si_addr = (void __user *) address;
- force_sig_info(SIGBUS, &info, tsk);
- return;
-vmalloc_fault:
- {
- /*
- * Synchronize this task's top level page-table
- * with the 'reference' page table.
- *
- * Do _not_ use "tsk" here. We might be inside
- * an interrupt in the middle of a task switch..
- */
- int offset = __pgd_offset(address);
- pgd_t *pgd, *pgd_k;
- pud_t *pud, *pud_k;
- pmd_t *pmd, *pmd_k;
- pte_t *pte_k;
-
- pgd = (pgd_t *) pgd_current + offset;
- pgd_k = init_mm.pgd + offset;
-
- if (!pgd_present(*pgd_k))
- goto no_context;
- set_pgd(pgd, *pgd_k);
-
- pud = pud_offset(pgd, address);
- pud_k = pud_offset(pgd_k, address);
- if (!pud_present(*pud_k))
- goto no_context;
-
- pmd = pmd_offset(pud, address);
- pmd_k = pmd_offset(pud_k, address);
- if (!pmd_present(*pmd_k))
- goto no_context;
- set_pmd(pmd, *pmd_k);
-
- pte_k = pte_offset_kernel(pmd_k, address);
- if (!pte_present(*pte_k))
- goto no_context;
- return;
- }
-}
+++ /dev/null
-/*
- * arch/score/mm/init.c
- *
- * Score Processor version.
- *
- * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
- * Lennox Wu <lennox.wu@sunplusct.com>
- * Chen Liqin <liqin.chen@sunplusct.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see the file COPYING, or write
- * to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <linux/errno.h>
-#include <linux/bootmem.h>
-#include <linux/kernel.h>
-#include <linux/gfp.h>
-#include <linux/init.h>
-#include <linux/mm.h>
-#include <linux/mman.h>
-#include <linux/pagemap.h>
-#include <linux/kcore.h>
-#include <linux/sched.h>
-#include <linux/initrd.h>
-
-#include <asm/sections.h>
-#include <asm/tlb.h>
-
-unsigned long empty_zero_page;
-EXPORT_SYMBOL_GPL(empty_zero_page);
-
-static void setup_zero_page(void)
-{
- struct page *page;
-
- empty_zero_page = __get_free_pages(GFP_KERNEL | __GFP_ZERO, 0);
- if (!empty_zero_page)
- panic("Oh boy, that early out of memory?");
-
- page = virt_to_page((void *) empty_zero_page);
- mark_page_reserved(page);
-}
-
-#ifndef CONFIG_NEED_MULTIPLE_NODES
-int page_is_ram(unsigned long pagenr)
-{
- if (pagenr >= min_low_pfn && pagenr < max_low_pfn)
- return 1;
- else
- return 0;
-}
-
-void __init paging_init(void)
-{
- unsigned long max_zone_pfns[MAX_NR_ZONES];
- unsigned long lastpfn;
-
- pagetable_init();
- max_zone_pfns[ZONE_NORMAL] = max_low_pfn;
- lastpfn = max_low_pfn;
- free_area_init_nodes(max_zone_pfns);
-}
-
-void __init mem_init(void)
-{
- high_memory = (void *) __va(max_low_pfn << PAGE_SHIFT);
- free_all_bootmem();
- setup_zero_page(); /* Setup zeroed pages. */
-
- mem_init_print_info(NULL);
-}
-#endif /* !CONFIG_NEED_MULTIPLE_NODES */
-
-#ifdef CONFIG_BLK_DEV_INITRD
-void free_initrd_mem(unsigned long start, unsigned long end)
-{
- free_reserved_area((void *)start, (void *)end, POISON_FREE_INITMEM,
- "initrd");
-}
-#endif
-
-void __ref free_initmem(void)
-{
- free_initmem_default(POISON_FREE_INITMEM);
-}
-
-unsigned long pgd_current;
-
-#define __page_aligned(order) __attribute__((__aligned__(PAGE_SIZE<<order)))
-
-/*
- * gcc 3.3 and older have trouble determining that PTRS_PER_PGD and PGD_ORDER
- * are constants. So we use the variants from asm-offset.h until that gcc
- * will officially be retired.
- */
-pgd_t swapper_pg_dir[PTRS_PER_PGD] __page_aligned(PTE_ORDER);
-pte_t invalid_pte_table[PTRS_PER_PTE] __page_aligned(PTE_ORDER);
+++ /dev/null
-/*
- * arch/score/mm/pgtable-32.c
- *
- * Score Processor version.
- *
- * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
- * Lennox Wu <lennox.wu@sunplusct.com>
- * Chen Liqin <liqin.chen@sunplusct.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see the file COPYING, or write
- * to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <linux/bootmem.h>
-#include <linux/init.h>
-#include <linux/pfn.h>
-#include <linux/mm.h>
-
-void pgd_init(unsigned long page)
-{
- unsigned long *p = (unsigned long *) page;
- int i;
-
- for (i = 0; i < USER_PTRS_PER_PGD; i += 8) {
- p[i + 0] = (unsigned long) invalid_pte_table;
- p[i + 1] = (unsigned long) invalid_pte_table;
- p[i + 2] = (unsigned long) invalid_pte_table;
- p[i + 3] = (unsigned long) invalid_pte_table;
- p[i + 4] = (unsigned long) invalid_pte_table;
- p[i + 5] = (unsigned long) invalid_pte_table;
- p[i + 6] = (unsigned long) invalid_pte_table;
- p[i + 7] = (unsigned long) invalid_pte_table;
- }
-}
-
-void __init pagetable_init(void)
-{
- /* Initialize the entire pgd. */
- pgd_init((unsigned long)swapper_pg_dir);
-}
+++ /dev/null
-/*
- * arch/score/mm/tlbex.S
- *
- * Score Processor version.
- *
- * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
- * Lennox Wu <lennox.wu@sunplusct.com>
- * Chen Liqin <liqin.chen@sunplusct.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see the file COPYING, or write
- * to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <asm/asmmacro.h>
-#include <asm/pgtable-bits.h>
-#include <asm/scoreregs.h>
-
-/*
-* After this macro runs, the pte faulted on is
-* in register PTE, a ptr into the table in which
-* the pte belongs is in PTR.
-*/
- .macro load_pte, pte, ptr
- la \ptr, pgd_current
- lw \ptr, [\ptr, 0]
- mfcr \pte, cr6
- srli \pte, \pte, 22
- slli \pte, \pte, 2
- add \ptr, \ptr, \pte
- lw \ptr, [\ptr, 0]
- mfcr \pte, cr6
- srli \pte, \pte, 10
- andi \pte, 0xffc
- add \ptr, \ptr, \pte
- lw \pte, [\ptr, 0]
- .endm
-
- .macro pte_reload, ptr
- lw \ptr, [\ptr, 0]
- mtcr \ptr, cr12
- nop
- nop
- nop
- nop
- nop
- .endm
-
- .macro do_fault, write
- SAVE_ALL
- mfcr r6, cr6
- mv r4, r0
- ldi r5, \write
- la r8, do_page_fault
- brl r8
- j ret_from_exception
- .endm
-
- .macro pte_writable, pte, ptr, label
- andi \pte, 0x280
- cmpi.c \pte, 0x280
- bne \label
- lw \pte, [\ptr, 0] /*reload PTE*/
- .endm
-
-/*
- * Make PTE writable, update software status bits as well,
- * then store at PTR.
- */
- .macro pte_makewrite, pte, ptr
- ori \pte, 0x426
- sw \pte, [\ptr, 0]
- .endm
-
- .text
-ENTRY(score7_FTLB_refill_Handler)
- la r31, pgd_current /* get pgd pointer */
- lw r31, [r31, 0] /* get the address of PGD */
- mfcr r30, cr6
- srli r30, r30, 22 /* PGDIR_SHIFT = 22*/
- slli r30, r30, 2
- add r31, r31, r30
- lw r31, [r31, 0] /* get the address of the start address of PTE table */
-
- mfcr r30, cr9
- andi r30, 0xfff /* equivalent to get PET index and right shift 2 bits */
- add r31, r31, r30
- lw r30, [r31, 0] /* load pte entry */
- mtcr r30, cr12
- nop
- nop
- nop
- nop
- nop
- mtrtlb
- nop
- nop
- nop
- nop
- nop
- rte /* 6 cycles to make sure tlb entry works */
-
-ENTRY(score7_KSEG_refill_Handler)
- la r31, pgd_current /* get pgd pointer */
- lw r31, [r31, 0] /* get the address of PGD */
- mfcr r30, cr6
- srli r30, r30, 22 /* PGDIR_SHIFT = 22 */
- slli r30, r30, 2
- add r31, r31, r30
- lw r31, [r31, 0] /* get the address of the start address of PTE table */
-
- mfcr r30, cr6 /* get Bad VPN */
- srli r30, r30, 10
- andi r30, 0xffc /* PTE VPN mask (bit 11~2) */
-
- add r31, r31, r30
- lw r30, [r31, 0] /* load pte entry */
- mtcr r30, cr12
- nop
- nop
- nop
- nop
- nop
- mtrtlb
- nop
- nop
- nop
- nop
- nop
- rte /* 6 cycles to make sure tlb entry works */
-
-nopage_tlbl:
- do_fault 0 /* Read */
-
-ENTRY(handle_tlb_refill)
- load_pte r30, r31
- pte_writable r30, r31, handle_tlb_refill_nopage
- pte_makewrite r30, r31 /* Access|Modify|Dirty|Valid */
- pte_reload r31
- mtrtlb
- nop
- nop
- nop
- nop
- nop
- rte
-handle_tlb_refill_nopage:
- do_fault 0 /* Read */
-
-ENTRY(handle_tlb_invaild)
- load_pte r30, r31
- stlb /* find faulting entry */
- pte_writable r30, r31, handle_tlb_invaild_nopage
- pte_makewrite r30, r31 /* Access|Modify|Dirty|Valid */
- pte_reload r31
- mtptlb
- nop
- nop
- nop
- nop
- nop
- rte
-handle_tlb_invaild_nopage:
- do_fault 0 /* Read */
-
-ENTRY(handle_mod)
- load_pte r30, r31
- stlb /* find faulting entry */
- andi r30, _PAGE_WRITE /* Writable? */
- cmpz.c r30
- beq nowrite_mod
- lw r30, [r31, 0] /* reload into r30 */
-
- /* Present and writable bits set, set accessed and dirty bits. */
- pte_makewrite r30, r31
-
- /* Now reload the entry into the tlb. */
- pte_reload r31
- mtptlb
- nop
- nop
- nop
- nop
- nop
- rte
-
-nowrite_mod:
- do_fault 1 /* Write */
+++ /dev/null
-/*
- * arch/score/mm/tlb-score.c
- *
- * Score Processor version.
- *
- * Copyright (C) 2009 Sunplus Core Technology Co., Ltd.
- * Lennox Wu <lennox.wu@sunplusct.com>
- * Chen Liqin <liqin.chen@sunplusct.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see the file COPYING, or write
- * to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <linux/highmem.h>
-#include <linux/module.h>
-
-#include <asm/irq.h>
-#include <asm/mmu_context.h>
-#include <asm/tlb.h>
-
-#define TLBSIZE 32
-
-unsigned long asid_cache = ASID_FIRST_VERSION;
-EXPORT_SYMBOL(asid_cache);
-
-void local_flush_tlb_all(void)
-{
- unsigned long flags;
- unsigned long old_ASID;
- int entry;
-
- local_irq_save(flags);
- old_ASID = pevn_get() & ASID_MASK;
- pectx_set(0); /* invalid */
- entry = tlblock_get(); /* skip locked entries*/
-
- for (; entry < TLBSIZE; entry++) {
- tlbpt_set(entry);
- pevn_set(KSEG1);
- barrier();
- tlb_write_indexed();
- }
- pevn_set(old_ASID);
- local_irq_restore(flags);
-}
-
-/*
- * If mm is currently active_mm, we can't really drop it. Instead,
- * we will get a new one for it.
- */
-static inline void
-drop_mmu_context(struct mm_struct *mm)
-{
- unsigned long flags;
-
- local_irq_save(flags);
- get_new_mmu_context(mm);
- pevn_set(mm->context & ASID_MASK);
- local_irq_restore(flags);
-}
-
-void local_flush_tlb_mm(struct mm_struct *mm)
-{
- if (mm->context != 0)
- drop_mmu_context(mm);
-}
-
-void local_flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
- unsigned long end)
-{
- struct mm_struct *mm = vma->vm_mm;
- unsigned long vma_mm_context = mm->context;
- if (mm->context != 0) {
- unsigned long flags;
- int size;
-
- local_irq_save(flags);
- size = (end - start + (PAGE_SIZE - 1)) >> PAGE_SHIFT;
- if (size <= TLBSIZE) {
- int oldpid = pevn_get() & ASID_MASK;
- int newpid = vma_mm_context & ASID_MASK;
-
- start &= PAGE_MASK;
- end += (PAGE_SIZE - 1);
- end &= PAGE_MASK;
- while (start < end) {
- int idx;
-
- pevn_set(start | newpid);
- start += PAGE_SIZE;
- barrier();
- tlb_probe();
- idx = tlbpt_get();
- pectx_set(0);
- pevn_set(KSEG1);
- if (idx < 0)
- continue;
- tlb_write_indexed();
- }
- pevn_set(oldpid);
- } else {
- /* Bigger than TLBSIZE, get new ASID directly */
- get_new_mmu_context(mm);
- if (mm == current->active_mm)
- pevn_set(vma_mm_context & ASID_MASK);
- }
- local_irq_restore(flags);
- }
-}
-
-void local_flush_tlb_kernel_range(unsigned long start, unsigned long end)
-{
- unsigned long flags;
- int size;
-
- local_irq_save(flags);
- size = (end - start + (PAGE_SIZE - 1)) >> PAGE_SHIFT;
- if (size <= TLBSIZE) {
- int pid = pevn_get();
-
- start &= PAGE_MASK;
- end += PAGE_SIZE - 1;
- end &= PAGE_MASK;
-
- while (start < end) {
- long idx;
-
- pevn_set(start);
- start += PAGE_SIZE;
- tlb_probe();
- idx = tlbpt_get();
- if (idx < 0)
- continue;
- pectx_set(0);
- pevn_set(KSEG1);
- barrier();
- tlb_write_indexed();
- }
- pevn_set(pid);
- } else {
- local_flush_tlb_all();
- }
-
- local_irq_restore(flags);
-}
-
-void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long page)
-{
- if (vma && vma->vm_mm->context != 0) {
- unsigned long flags;
- int oldpid, newpid, idx;
- unsigned long vma_ASID = vma->vm_mm->context;
-
- newpid = vma_ASID & ASID_MASK;
- page &= PAGE_MASK;
- local_irq_save(flags);
- oldpid = pevn_get() & ASID_MASK;
- pevn_set(page | newpid);
- barrier();
- tlb_probe();
- idx = tlbpt_get();
- pectx_set(0);
- pevn_set(KSEG1);
- if (idx < 0) /* p_bit(31) - 1: miss, 0: hit*/
- goto finish;
- barrier();
- tlb_write_indexed();
-finish:
- pevn_set(oldpid);
- local_irq_restore(flags);
- }
-}
-
-/*
- * This one is only used for pages with the global bit set so we don't care
- * much about the ASID.
- */
-void local_flush_tlb_one(unsigned long page)
-{
- unsigned long flags;
- int oldpid, idx;
-
- local_irq_save(flags);
- oldpid = pevn_get();
- page &= (PAGE_MASK << 1);
- pevn_set(page);
- barrier();
- tlb_probe();
- idx = tlbpt_get();
- pectx_set(0);
- if (idx >= 0) {
- /* Make sure all entries differ. */
- pevn_set(KSEG1);
- barrier();
- tlb_write_indexed();
- }
- pevn_set(oldpid);
- local_irq_restore(flags);
-}
-
-void __update_tlb(struct vm_area_struct *vma, unsigned long address, pte_t pte)
-{
- unsigned long flags;
- int idx, pid;
-
- /*
- * Handle debugger faulting in for debugee.
- */
- if (current->active_mm != vma->vm_mm)
- return;
-
- pid = pevn_get() & ASID_MASK;
-
- local_irq_save(flags);
- address &= PAGE_MASK;
- pevn_set(address | pid);
- barrier();
- tlb_probe();
- idx = tlbpt_get();
- pectx_set(pte_val(pte));
- pevn_set(address | pid);
- if (idx < 0)
- tlb_write_random();
- else
- tlb_write_indexed();
-
- pevn_set(pid);
- local_irq_restore(flags);
-}
-
-void tlb_init(void)
-{
- tlblock_set(0);
- local_flush_tlb_all();
- memcpy((void *)(EXCEPTION_VECTOR_BASE_ADDR + 0x100),
- &score7_FTLB_refill_Handler, 0xFC);
- flush_icache_range(EXCEPTION_VECTOR_BASE_ADDR + 0x100,
- EXCEPTION_VECTOR_BASE_ADDR + 0x1FC);
-}
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _ASM_SCORE_BITSPERLONG_H
-#define _ASM_SCORE_BITSPERLONG_H
-
-#include <asm-generic/bitsperlong.h>
-
-#endif /* _ASM_SCORE_BITSPERLONG_H */
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef TOOLS_ARCH_SCORE_UAPI_ASM_MMAN_FIX_H
-#define TOOLS_ARCH_SCORE_UAPI_ASM_MMAN_FIX_H
-#include <uapi/asm-generic/mman.h>
-/* MAP_32BIT is undefined on score, fix it for perf */
-#define MAP_32BIT 0
-#endif
git.samba.org / sfrench / cifs-2.6.git / commitdiff