Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

[sfrench/cifs-2.6.git] / arch / powerpc / kernel / head_32.S

diff --git a/arch/powerpc/kernel/head_32.S b/arch/powerpc/kernel/head_32.S
index 7d73a13450b060b37623176df2d2f455476c758f..0f4fac51202007492fdc219e99533d119bcc3339 100644 (file)
--- a/arch/powerpc/kernel/head_32.S
+++ b/arch/powerpc/kernel/head_32.S
@@ -48,20 +48,17 @@
        mtspr   SPRN_DBAT##n##L,RB;     \
 1:
 
-       .text
+       .section        .text.head, "ax"
        .stabs  "arch/powerpc/kernel/",N_SO,0,0,0f
        .stabs  "head_32.S",N_SO,0,0,0f
 0:
-       .globl  _stext
-_stext:
+_ENTRY(_stext);
 
 /*
  * _start is defined this way because the XCOFF loader in the OpenFirmware
  * on the powermac expects the entry point to be a procedure descriptor.
  */
-       .text
-       .globl  _start
-_start:
+_ENTRY(_start);
        /*
         * These are here for legacy reasons, the kernel used to
         * need to look like a coff function entry for the pmac
@@ -152,6 +149,9 @@ __after_mmu_off:
 #if defined(CONFIG_BOOTX_TEXT)
        bl      setup_disp_bat
 #endif
+#ifdef CONFIG_PPC_EARLY_DEBUG_CPM
+       bl      setup_cpm_bat
+#endif
 
 /*
  * Call setup_cpu for CPU 0 and initialize 6xx Idle
@@ -469,16 +469,16 @@ InstructionTLBMiss:
        mfctr   r0
        /* Get PTE (linux-style) and check access */
        mfspr   r3,SPRN_IMISS
-       lis     r1,KERNELBASE@h         /* check if kernel address */
-       cmplw   0,r3,r1
+       lis     r1,PAGE_OFFSET@h                /* check if kernel address */
+       cmplw   0,r1,r3
        mfspr   r2,SPRN_SPRG3
        li      r1,_PAGE_USER|_PAGE_PRESENT /* low addresses tested as user */
        lwz     r2,PGDIR(r2)
-       blt+    112f
+       bge-    112f
+       mfspr   r2,SPRN_SRR1            /* and MSR_PR bit from SRR1 */
+       rlwimi  r1,r2,32-12,29,29       /* shift MSR_PR to _PAGE_USER posn */
        lis     r2,swapper_pg_dir@ha    /* if kernel address, use */
        addi    r2,r2,swapper_pg_dir@l  /* kernel page table */
-       mfspr   r1,SPRN_SRR1            /* and MSR_PR bit from SRR1 */
-       rlwinm  r1,r1,32-12,29,29       /* shift MSR_PR to _PAGE_USER posn */
 112:   tophys(r2,r2)
        rlwimi  r2,r3,12,20,29          /* insert top 10 bits of address */
        lwz     r2,0(r2)                /* get pmd entry */
@@ -543,16 +543,16 @@ DataLoadTLBMiss:
        mfctr   r0
        /* Get PTE (linux-style) and check access */
        mfspr   r3,SPRN_DMISS
-       lis     r1,KERNELBASE@h         /* check if kernel address */
-       cmplw   0,r3,r1
+       lis     r1,PAGE_OFFSET@h                /* check if kernel address */
+       cmplw   0,r1,r3
        mfspr   r2,SPRN_SPRG3
        li      r1,_PAGE_USER|_PAGE_PRESENT /* low addresses tested as user */
        lwz     r2,PGDIR(r2)
-       blt+    112f
+       bge-    112f
+       mfspr   r2,SPRN_SRR1            /* and MSR_PR bit from SRR1 */
+       rlwimi  r1,r2,32-12,29,29       /* shift MSR_PR to _PAGE_USER posn */
        lis     r2,swapper_pg_dir@ha    /* if kernel address, use */
        addi    r2,r2,swapper_pg_dir@l  /* kernel page table */
-       mfspr   r1,SPRN_SRR1            /* and MSR_PR bit from SRR1 */
-       rlwinm  r1,r1,32-12,29,29       /* shift MSR_PR to _PAGE_USER posn */
 112:   tophys(r2,r2)
        rlwimi  r2,r3,12,20,29          /* insert top 10 bits of address */
        lwz     r2,0(r2)                /* get pmd entry */
@@ -615,16 +615,16 @@ DataStoreTLBMiss:
        mfctr   r0
        /* Get PTE (linux-style) and check access */
        mfspr   r3,SPRN_DMISS
-       lis     r1,KERNELBASE@h         /* check if kernel address */
-       cmplw   0,r3,r1
+       lis     r1,PAGE_OFFSET@h                /* check if kernel address */
+       cmplw   0,r1,r3
        mfspr   r2,SPRN_SPRG3
        li      r1,_PAGE_RW|_PAGE_USER|_PAGE_PRESENT /* access flags */
        lwz     r2,PGDIR(r2)
-       blt+    112f
+       bge-    112f
+       mfspr   r2,SPRN_SRR1            /* and MSR_PR bit from SRR1 */
+       rlwimi  r1,r2,32-12,29,29       /* shift MSR_PR to _PAGE_USER posn */
        lis     r2,swapper_pg_dir@ha    /* if kernel address, use */
        addi    r2,r2,swapper_pg_dir@l  /* kernel page table */
-       mfspr   r1,SPRN_SRR1            /* and MSR_PR bit from SRR1 */
-       rlwinm  r1,r1,32-12,29,29       /* shift MSR_PR to _PAGE_USER posn */
 112:   tophys(r2,r2)
        rlwimi  r2,r3,12,20,29          /* insert top 10 bits of address */
        lwz     r2,0(r2)                /* get pmd entry */
@@ -841,7 +841,7 @@ relocate_kernel:
  * r3 = dest addr, r4 = source addr, r5 = copy limit, r6 = start offset
  * on exit, r3, r4, r5 are unchanged, r6 is updated to be >= r5.
  */
-_GLOBAL(copy_and_flush)
+_ENTRY(copy_and_flush)
        addi    r5,r5,-4
        addi    r6,r6,-4
 4:     li      r0,L1_CACHE_BYTES/4
@@ -954,9 +954,9 @@ __secondary_start:
  * included in CONFIG_6xx
  */
 #if !defined(CONFIG_6xx)
-_GLOBAL(__save_cpu_setup)
+_ENTRY(__save_cpu_setup)
        blr
-_GLOBAL(__restore_cpu_setup)
+_ENTRY(__restore_cpu_setup)
        blr
 #endif /* !defined(CONFIG_6xx) */
 
@@ -1080,7 +1080,7 @@ start_here:
 /*
  * Set up the segment registers for a new context.
  */
-_GLOBAL(set_context)
+_ENTRY(set_context)
        mulli   r3,r3,897       /* multiply context by skew factor */
        rlwinm  r3,r3,4,8,27    /* VSID = (context & 0xfffff) << 4 */
        addis   r3,r3,0x6000    /* Set Ks, Ku bits */
@@ -1248,6 +1248,19 @@ setup_disp_bat:
        blr
 #endif /* CONFIG_BOOTX_TEXT */
 
+#ifdef CONFIG_PPC_EARLY_DEBUG_CPM
+setup_cpm_bat:
+       lis     r8, 0xf000
+       ori     r8, r8, 0x002a
+       mtspr   SPRN_DBAT1L, r8
+
+       lis     r11, 0xf000
+       ori     r11, r11, (BL_1M << 2) | 2
+       mtspr   SPRN_DBAT1U, r11
+
+       blr
+#endif
+
 #ifdef CONFIG_8260
 /* Jump into the system reset for the rom.
  * We first disable the MMU, and then jump to the ROM reset address.
@@ -1298,15 +1311,7 @@ empty_zero_page:
 
        .globl  swapper_pg_dir
 swapper_pg_dir:
-       .space  4096
-
-/*
- * This space gets a copy of optional info passed to us by the bootstrap
- * Used to pass parameters into the kernel like root=/dev/sda1, etc.
- */
-       .globl  cmd_line
-cmd_line:
-       .space  512
+       .space  PGD_TABLE_SIZE
 
        .globl intercept_table
 intercept_table: