Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
[sfrench/cifs-2.6.git] / arch / xtensa / include / asm / kmem_layout.h
1 /*
2  * Kernel virtual memory layout definitions.
3  *
4  * This file is subject to the terms and conditions of the GNU General
5  * Public License.  See the file "COPYING" in the main directory of
6  * this archive for more details.
7  *
8  * Copyright (C) 2016 Cadence Design Systems Inc.
9  */
10
11 #ifndef _XTENSA_KMEM_LAYOUT_H
12 #define _XTENSA_KMEM_LAYOUT_H
13
14 #include <asm/types.h>
15
16 #ifdef CONFIG_MMU
17
18 /*
19  * Fixed TLB translations in the processor.
20  */
21
22 #define XCHAL_PAGE_TABLE_VADDR  __XTENSA_UL_CONST(0x80000000)
23 #define XCHAL_PAGE_TABLE_SIZE   __XTENSA_UL_CONST(0x00400000)
24
25 #if defined(CONFIG_XTENSA_KSEG_MMU_V2)
26
27 #define XCHAL_KSEG_CACHED_VADDR __XTENSA_UL_CONST(0xd0000000)
28 #define XCHAL_KSEG_BYPASS_VADDR __XTENSA_UL_CONST(0xd8000000)
29 #define XCHAL_KSEG_SIZE         __XTENSA_UL_CONST(0x08000000)
30 #define XCHAL_KSEG_ALIGNMENT    __XTENSA_UL_CONST(0x08000000)
31 #define XCHAL_KSEG_TLB_WAY      5
32 #define XCHAL_KIO_TLB_WAY       6
33
34 #elif defined(CONFIG_XTENSA_KSEG_256M)
35
36 #define XCHAL_KSEG_CACHED_VADDR __XTENSA_UL_CONST(0xb0000000)
37 #define XCHAL_KSEG_BYPASS_VADDR __XTENSA_UL_CONST(0xc0000000)
38 #define XCHAL_KSEG_SIZE         __XTENSA_UL_CONST(0x10000000)
39 #define XCHAL_KSEG_ALIGNMENT    __XTENSA_UL_CONST(0x10000000)
40 #define XCHAL_KSEG_TLB_WAY      6
41 #define XCHAL_KIO_TLB_WAY       6
42
43 #elif defined(CONFIG_XTENSA_KSEG_512M)
44
45 #define XCHAL_KSEG_CACHED_VADDR __XTENSA_UL_CONST(0xa0000000)
46 #define XCHAL_KSEG_BYPASS_VADDR __XTENSA_UL_CONST(0xc0000000)
47 #define XCHAL_KSEG_SIZE         __XTENSA_UL_CONST(0x20000000)
48 #define XCHAL_KSEG_ALIGNMENT    __XTENSA_UL_CONST(0x10000000)
49 #define XCHAL_KSEG_TLB_WAY      6
50 #define XCHAL_KIO_TLB_WAY       6
51
52 #else
53 #error Unsupported KSEG configuration
54 #endif
55
56 #ifdef CONFIG_KSEG_PADDR
57 #define XCHAL_KSEG_PADDR        __XTENSA_UL_CONST(CONFIG_KSEG_PADDR)
58 #else
59 #define XCHAL_KSEG_PADDR        __XTENSA_UL_CONST(0x00000000)
60 #endif
61
62 #if XCHAL_KSEG_PADDR & (XCHAL_KSEG_ALIGNMENT - 1)
63 #error XCHAL_KSEG_PADDR is not properly aligned to XCHAL_KSEG_ALIGNMENT
64 #endif
65
66 #else
67
68 #define XCHAL_KSEG_CACHED_VADDR __XTENSA_UL_CONST(0xd0000000)
69 #define XCHAL_KSEG_BYPASS_VADDR __XTENSA_UL_CONST(0xd8000000)
70 #define XCHAL_KSEG_SIZE         __XTENSA_UL_CONST(0x08000000)
71
72 #endif
73
74 #ifndef CONFIG_KASAN
75 #define KERNEL_STACK_SHIFT      13
76 #else
77 #define KERNEL_STACK_SHIFT      15
78 #endif
79 #define KERNEL_STACK_SIZE       (1 << KERNEL_STACK_SHIFT)
80
81 #endif