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0ae76531 DF |
1 | /* |
2 | * (C) Copyright 2013 | |
3 | * David Feng <fenghua@phytium.com.cn> | |
4 | * | |
5 | * SPDX-License-Identifier: GPL-2.0+ | |
6 | */ | |
7 | ||
8 | #ifndef _ASM_ARMV8_MMU_H_ | |
9 | #define _ASM_ARMV8_MMU_H_ | |
10 | ||
0ae76531 DF |
11 | /***************************************************************/ |
12 | /* | |
13 | * The following definitions are related each other, shoud be | |
14 | * calculated specifically. | |
15 | */ | |
94f7ff36 | 16 | |
94f7ff36 | 17 | #define VA_BITS CONFIG_SYS_VA_BITS |
5e2ec773 | 18 | #define PTE_BLOCK_BITS CONFIG_SYS_PTL2_BITS |
0ae76531 | 19 | |
0ae76531 | 20 | /* |
94f7ff36 | 21 | * block/section address mask and size definitions. |
0ae76531 | 22 | */ |
5e2ec773 AG |
23 | |
24 | /* PAGE_SHIFT determines the page size */ | |
25 | #undef PAGE_SIZE | |
26 | #define PAGE_SHIFT 12 | |
27 | #define PAGE_SIZE (1 << PAGE_SHIFT) | |
28 | #define PAGE_MASK (~(PAGE_SIZE-1)) | |
29 | ||
0ae76531 DF |
30 | /***************************************************************/ |
31 | ||
32 | /* | |
33 | * Memory types | |
34 | */ | |
35 | #define MT_DEVICE_NGNRNE 0 | |
36 | #define MT_DEVICE_NGNRE 1 | |
37 | #define MT_DEVICE_GRE 2 | |
38 | #define MT_NORMAL_NC 3 | |
39 | #define MT_NORMAL 4 | |
40 | ||
94f7ff36 ST |
41 | #define MEMORY_ATTRIBUTES ((0x00 << (MT_DEVICE_NGNRNE * 8)) | \ |
42 | (0x04 << (MT_DEVICE_NGNRE * 8)) | \ | |
43 | (0x0c << (MT_DEVICE_GRE * 8)) | \ | |
44 | (0x44 << (MT_NORMAL_NC * 8)) | \ | |
45 | (UL(0xff) << (MT_NORMAL * 8))) | |
0ae76531 DF |
46 | |
47 | /* | |
48 | * Hardware page table definitions. | |
49 | * | |
94f7ff36 ST |
50 | */ |
51 | ||
5e2ec773 AG |
52 | #define PTE_TYPE_MASK (3 << 0) |
53 | #define PTE_TYPE_FAULT (0 << 0) | |
54 | #define PTE_TYPE_TABLE (3 << 0) | |
55 | #define PTE_TYPE_BLOCK (1 << 0) | |
94f7ff36 | 56 | |
5e2ec773 AG |
57 | #define PTE_TABLE_PXN (1UL << 59) |
58 | #define PTE_TABLE_XN (1UL << 60) | |
59 | #define PTE_TABLE_AP (1UL << 61) | |
60 | #define PTE_TABLE_NS (1UL << 63) | |
94f7ff36 ST |
61 | |
62 | /* | |
63 | * Block | |
64 | */ | |
5e2ec773 | 65 | #define PTE_BLOCK_MEMTYPE(x) ((x) << 2) |
7985cdf7 | 66 | #define PTE_BLOCK_NS (1 << 5) |
5e2ec773 AG |
67 | #define PTE_BLOCK_NON_SHARE (0 << 8) |
68 | #define PTE_BLOCK_OUTER_SHARE (2 << 8) | |
69 | #define PTE_BLOCK_INNER_SHARE (3 << 8) | |
70 | #define PTE_BLOCK_AF (1 << 10) | |
71 | #define PTE_BLOCK_NG (1 << 11) | |
72 | #define PTE_BLOCK_PXN (UL(1) << 53) | |
73 | #define PTE_BLOCK_UXN (UL(1) << 54) | |
94f7ff36 | 74 | |
0ae76531 DF |
75 | /* |
76 | * AttrIndx[2:0] | |
77 | */ | |
78 | #define PMD_ATTRINDX(t) ((t) << 2) | |
79 | #define PMD_ATTRINDX_MASK (7 << 2) | |
80 | ||
81 | /* | |
82 | * TCR flags. | |
83 | */ | |
84 | #define TCR_T0SZ(x) ((64 - (x)) << 0) | |
85 | #define TCR_IRGN_NC (0 << 8) | |
86 | #define TCR_IRGN_WBWA (1 << 8) | |
87 | #define TCR_IRGN_WT (2 << 8) | |
88 | #define TCR_IRGN_WBNWA (3 << 8) | |
89 | #define TCR_IRGN_MASK (3 << 8) | |
90 | #define TCR_ORGN_NC (0 << 10) | |
91 | #define TCR_ORGN_WBWA (1 << 10) | |
92 | #define TCR_ORGN_WT (2 << 10) | |
93 | #define TCR_ORGN_WBNWA (3 << 10) | |
94 | #define TCR_ORGN_MASK (3 << 10) | |
95 | #define TCR_SHARED_NON (0 << 12) | |
21a257b9 ZH |
96 | #define TCR_SHARED_OUTER (2 << 12) |
97 | #define TCR_SHARED_INNER (3 << 12) | |
0ae76531 DF |
98 | #define TCR_TG0_4K (0 << 14) |
99 | #define TCR_TG0_64K (1 << 14) | |
100 | #define TCR_TG0_16K (2 << 14) | |
9bb367a5 | 101 | #define TCR_EPD1_DISABLE (1 << 23) |
94f7ff36 | 102 | |
ad3d6e88 TR |
103 | #define TCR_EL1_RSVD (1 << 31) |
104 | #define TCR_EL2_RSVD (1 << 31 | 1 << 23) | |
105 | #define TCR_EL3_RSVD (1 << 31 | 1 << 23) | |
106 | ||
22932ffc | 107 | #ifndef __ASSEMBLY__ |
22932ffc YS |
108 | static inline void set_ttbr_tcr_mair(int el, u64 table, u64 tcr, u64 attr) |
109 | { | |
110 | asm volatile("dsb sy"); | |
111 | if (el == 1) { | |
112 | asm volatile("msr ttbr0_el1, %0" : : "r" (table) : "memory"); | |
113 | asm volatile("msr tcr_el1, %0" : : "r" (tcr) : "memory"); | |
114 | asm volatile("msr mair_el1, %0" : : "r" (attr) : "memory"); | |
115 | } else if (el == 2) { | |
116 | asm volatile("msr ttbr0_el2, %0" : : "r" (table) : "memory"); | |
117 | asm volatile("msr tcr_el2, %0" : : "r" (tcr) : "memory"); | |
118 | asm volatile("msr mair_el2, %0" : : "r" (attr) : "memory"); | |
119 | } else if (el == 3) { | |
120 | asm volatile("msr ttbr0_el3, %0" : : "r" (table) : "memory"); | |
121 | asm volatile("msr tcr_el3, %0" : : "r" (tcr) : "memory"); | |
122 | asm volatile("msr mair_el3, %0" : : "r" (attr) : "memory"); | |
123 | } else { | |
124 | hang(); | |
125 | } | |
126 | asm volatile("isb"); | |
127 | } | |
94f7ff36 ST |
128 | |
129 | struct mm_region { | |
cd4b0c5f YS |
130 | u64 virt; |
131 | u64 phys; | |
94f7ff36 ST |
132 | u64 size; |
133 | u64 attrs; | |
134 | }; | |
d473f0c6 AG |
135 | |
136 | extern struct mm_region *mem_map; | |
252cdb46 YS |
137 | void setup_pgtables(void); |
138 | u64 get_tcr(int el, u64 *pips, u64 *pva_bits); | |
22932ffc | 139 | #endif |
94f7ff36 | 140 | |
0ae76531 | 141 | #endif /* _ASM_ARMV8_MMU_H_ */ |