mirror of
https://github.com/ARM-software/arm-trusted-firmware.git
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Refactor the xlat_tables library code
The AArch32 long descriptor format and the AArch64 descriptor format correspond to each other which allows possible sharing of xlat_tables library code between AArch64 and AArch32. This patch refactors the xlat_tables library code to seperate the common functionality from architecture specific code. Prior to this patch, all of the xlat_tables library code were in `lib/aarch64/xlat_tables.c` file. The refactored code is now in `lib/xlat_tables/` directory. The AArch64 specific programming for xlat_tables is in `lib/xlat_tables/aarch64/xlat_tables.c` and the rest of the code common to AArch64 and AArch32 is in `lib/xlat_tables/xlat_tables_common.c`. Also the data types used in xlat_tables library APIs are reworked to make it compatible between AArch64 and AArch32. The `lib/aarch64/xlat_tables.c` file now includes the new xlat_tables library files to retain compatibility for existing platform ports. The macros related to xlat_tables library are also moved from `include/lib/aarch64/arch.h` to the header `include/lib/xlat_tables.h`. NOTE: THE `lib/aarch64/xlat_tables.c` FILE IS DEPRECATED AND PLATFORM PORTS ARE EXPECTED TO INCLUDE THE NEW XLAT_TABLES LIBRARY FILES IN THEIR MAKEFILES. Change-Id: I3d17217d24aaf3a05a4685d642a31d4d56255a0f
This commit is contained in:
Soby Mathew
parent
72c1dc149c
commit
3ca9928df2
7 changed files with 580 additions and 446 deletions
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@ -38,6 +38,7 @@
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#include <io_storage.h>
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#include <platform.h>
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#include <string.h>
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#include <xlat_tables.h>
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unsigned long page_align(unsigned long value, unsigned dir)
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{
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@ -359,80 +359,6 @@
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#define clr_cntp_ctl_enable(x) (x &= ~(1 << CNTP_CTL_ENABLE_SHIFT))
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#define clr_cntp_ctl_imask(x) (x &= ~(1 << CNTP_CTL_IMASK_SHIFT))
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/* Miscellaneous MMU related constants */
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#define NUM_2MB_IN_GB (1 << 9)
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#define NUM_4K_IN_2MB (1 << 9)
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#define NUM_GB_IN_4GB (1 << 2)
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#define TWO_MB_SHIFT 21
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#define ONE_GB_SHIFT 30
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#define FOUR_KB_SHIFT 12
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#define ONE_GB_INDEX(x) ((x) >> ONE_GB_SHIFT)
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#define TWO_MB_INDEX(x) ((x) >> TWO_MB_SHIFT)
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#define FOUR_KB_INDEX(x) ((x) >> FOUR_KB_SHIFT)
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#define INVALID_DESC 0x0
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#define BLOCK_DESC 0x1
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#define TABLE_DESC 0x3
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#define FIRST_LEVEL_DESC_N ONE_GB_SHIFT
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#define SECOND_LEVEL_DESC_N TWO_MB_SHIFT
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#define THIRD_LEVEL_DESC_N FOUR_KB_SHIFT
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#define LEVEL1 1
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#define LEVEL2 2
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#define LEVEL3 3
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#define XN (1ull << 2)
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#define PXN (1ull << 1)
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#define CONT_HINT (1ull << 0)
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#define UPPER_ATTRS(x) (x & 0x7) << 52
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#define NON_GLOBAL (1 << 9)
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#define ACCESS_FLAG (1 << 8)
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#define NSH (0x0 << 6)
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#define OSH (0x2 << 6)
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#define ISH (0x3 << 6)
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#define PAGE_SIZE_SHIFT FOUR_KB_SHIFT
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#define PAGE_SIZE (1 << PAGE_SIZE_SHIFT)
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#define PAGE_SIZE_MASK (PAGE_SIZE - 1)
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#define IS_PAGE_ALIGNED(addr) (((addr) & PAGE_SIZE_MASK) == 0)
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#define XLAT_ENTRY_SIZE_SHIFT 3 /* Each MMU table entry is 8 bytes (1 << 3) */
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#define XLAT_ENTRY_SIZE (1 << XLAT_ENTRY_SIZE_SHIFT)
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#define XLAT_TABLE_SIZE_SHIFT PAGE_SIZE_SHIFT
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#define XLAT_TABLE_SIZE (1 << XLAT_TABLE_SIZE_SHIFT)
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/* Values for number of entries in each MMU translation table */
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#define XLAT_TABLE_ENTRIES_SHIFT (XLAT_TABLE_SIZE_SHIFT - XLAT_ENTRY_SIZE_SHIFT)
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#define XLAT_TABLE_ENTRIES (1 << XLAT_TABLE_ENTRIES_SHIFT)
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#define XLAT_TABLE_ENTRIES_MASK (XLAT_TABLE_ENTRIES - 1)
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/* Values to convert a memory address to an index into a translation table */
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#define L3_XLAT_ADDRESS_SHIFT PAGE_SIZE_SHIFT
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#define L2_XLAT_ADDRESS_SHIFT (L3_XLAT_ADDRESS_SHIFT + XLAT_TABLE_ENTRIES_SHIFT)
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#define L1_XLAT_ADDRESS_SHIFT (L2_XLAT_ADDRESS_SHIFT + XLAT_TABLE_ENTRIES_SHIFT)
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/*
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* AP[1] bit is ignored by hardware and is
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* treated as if it is One in EL2/EL3
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*/
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#define AP_RO (0x1 << 5)
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#define AP_RW (0x0 << 5)
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#define NS (0x1 << 3)
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#define ATTR_NON_CACHEABLE_INDEX 0x2
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#define ATTR_DEVICE_INDEX 0x1
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#define ATTR_IWBWA_OWBWA_NTR_INDEX 0x0
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#define LOWER_ATTRS(x) (((x) & 0xfff) << 2)
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#define ATTR_NON_CACHEABLE (0x44)
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#define ATTR_DEVICE (0x4)
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#define ATTR_IWBWA_OWBWA_NTR (0xff)
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#define MAIR_ATTR_SET(attr, index) (attr << (index << 3))
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/* Exception Syndrome register bits and bobs */
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#define ESR_EC_SHIFT 26
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#define ESR_EC_MASK 0x3f
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@ -1,5 +1,5 @@
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/*
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* Copyright (c) 2014, ARM Limited and Contributors. All rights reserved.
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* Copyright (c) 2014-2016, ARM Limited and Contributors. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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@ -31,6 +31,79 @@
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#ifndef __XLAT_TABLES_H__
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#define __XLAT_TABLES_H__
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/* Miscellaneous MMU related constants */
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#define NUM_2MB_IN_GB (1 << 9)
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#define NUM_4K_IN_2MB (1 << 9)
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#define NUM_GB_IN_4GB (1 << 2)
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#define TWO_MB_SHIFT 21
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#define ONE_GB_SHIFT 30
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#define FOUR_KB_SHIFT 12
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#define ONE_GB_INDEX(x) ((x) >> ONE_GB_SHIFT)
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#define TWO_MB_INDEX(x) ((x) >> TWO_MB_SHIFT)
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#define FOUR_KB_INDEX(x) ((x) >> FOUR_KB_SHIFT)
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#define INVALID_DESC 0x0
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#define BLOCK_DESC 0x1
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#define TABLE_DESC 0x3
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#define FIRST_LEVEL_DESC_N ONE_GB_SHIFT
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#define SECOND_LEVEL_DESC_N TWO_MB_SHIFT
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#define THIRD_LEVEL_DESC_N FOUR_KB_SHIFT
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#define LEVEL1 1
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#define LEVEL2 2
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#define LEVEL3 3
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#define XN (1ull << 2)
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#define PXN (1ull << 1)
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#define CONT_HINT (1ull << 0)
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#define UPPER_ATTRS(x) (x & 0x7) << 52
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#define NON_GLOBAL (1 << 9)
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#define ACCESS_FLAG (1 << 8)
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#define NSH (0x0 << 6)
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#define OSH (0x2 << 6)
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#define ISH (0x3 << 6)
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#define PAGE_SIZE_SHIFT FOUR_KB_SHIFT
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#define PAGE_SIZE (1 << PAGE_SIZE_SHIFT)
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#define PAGE_SIZE_MASK (PAGE_SIZE - 1)
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#define IS_PAGE_ALIGNED(addr) (((addr) & PAGE_SIZE_MASK) == 0)
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#define XLAT_ENTRY_SIZE_SHIFT 3 /* Each MMU table entry is 8 bytes (1 << 3) */
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#define XLAT_ENTRY_SIZE (1 << XLAT_ENTRY_SIZE_SHIFT)
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#define XLAT_TABLE_SIZE_SHIFT PAGE_SIZE_SHIFT
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#define XLAT_TABLE_SIZE (1 << XLAT_TABLE_SIZE_SHIFT)
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/* Values for number of entries in each MMU translation table */
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#define XLAT_TABLE_ENTRIES_SHIFT (XLAT_TABLE_SIZE_SHIFT - XLAT_ENTRY_SIZE_SHIFT)
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#define XLAT_TABLE_ENTRIES (1 << XLAT_TABLE_ENTRIES_SHIFT)
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#define XLAT_TABLE_ENTRIES_MASK (XLAT_TABLE_ENTRIES - 1)
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/* Values to convert a memory address to an index into a translation table */
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#define L3_XLAT_ADDRESS_SHIFT PAGE_SIZE_SHIFT
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#define L2_XLAT_ADDRESS_SHIFT (L3_XLAT_ADDRESS_SHIFT + XLAT_TABLE_ENTRIES_SHIFT)
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#define L1_XLAT_ADDRESS_SHIFT (L2_XLAT_ADDRESS_SHIFT + XLAT_TABLE_ENTRIES_SHIFT)
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/*
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* AP[1] bit is ignored by hardware and is
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* treated as if it is One in EL2/EL3
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*/
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#define AP_RO (0x1 << 5)
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#define AP_RW (0x0 << 5)
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#define NS (0x1 << 3)
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#define ATTR_NON_CACHEABLE_INDEX 0x2
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#define ATTR_DEVICE_INDEX 0x1
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#define ATTR_IWBWA_OWBWA_NTR_INDEX 0x0
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#define LOWER_ATTRS(x) (((x) & 0xfff) << 2)
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#define ATTR_NON_CACHEABLE (0x44)
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#define ATTR_DEVICE (0x4)
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#define ATTR_IWBWA_OWBWA_NTR (0xff)
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#define MAIR_ATTR_SET(attr, index) (attr << (index << 3))
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/*
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* Flags to override default values used to program system registers while
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@ -39,6 +112,7 @@
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#define DISABLE_DCACHE (1 << 0)
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#ifndef __ASSEMBLY__
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#include <stddef.h>
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#include <stdint.h>
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/* Helper macro to define entries for mmap_region_t. It creates
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@ -93,20 +167,21 @@ typedef enum {
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* Structure for specifying a single region of memory.
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*/
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typedef struct mmap_region {
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unsigned long base_pa;
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unsigned long base_va;
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unsigned long size;
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mmap_attr_t attr;
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unsigned long long base_pa;
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uintptr_t base_va;
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size_t size;
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mmap_attr_t attr;
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} mmap_region_t;
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void mmap_add_region(unsigned long base_pa, unsigned long base_va,
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unsigned long size, unsigned attr);
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/* Generic translation table APIs */
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void init_xlat_tables(void);
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void mmap_add_region(unsigned long long base_pa, uintptr_t base_va,
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size_t size, unsigned int attr);
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void mmap_add(const mmap_region_t *mm);
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void init_xlat_tables(void);
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void enable_mmu_el1(uint32_t flags);
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void enable_mmu_el3(uint32_t flags);
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/* AArch64 specific translation table APIs */
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void enable_mmu_el1(unsigned int flags);
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void enable_mmu_el3(unsigned int flags);
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#endif /*__ASSEMBLY__*/
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#endif /* __XLAT_TABLES_H__ */
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@ -1,5 +1,5 @@
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/*
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* Copyright (c) 2014, ARM Limited and Contributors. All rights reserved.
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* Copyright (c) 2014-2016, ARM Limited and Contributors. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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@ -28,366 +28,11 @@
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <arch.h>
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#include <arch_helpers.h>
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#include <assert.h>
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#include <bl_common.h>
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#include <cassert.h>
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#include <debug.h>
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#include <platform_def.h>
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#include <string.h>
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#include <xlat_tables.h>
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#if LOG_LEVEL >= LOG_LEVEL_VERBOSE
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#define LVL0_SPACER ""
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#define LVL1_SPACER " "
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#define LVL2_SPACER " "
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#define LVL3_SPACER " "
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#define get_level_spacer(level) \
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(((level) == 0) ? LVL0_SPACER : \
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(((level) == 1) ? LVL1_SPACER : \
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(((level) == 2) ? LVL2_SPACER : LVL3_SPACER)))
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#define debug_print(...) tf_printf(__VA_ARGS__)
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#else
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#define debug_print(...) ((void)0)
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#endif
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#define IS_POWER_OF_TWO(x) (((x) & ((x) - 1)) == 0)
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/*
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* The virtual address space size must be a power of two (as set in TCR.T0SZ).
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* As we start the initial lookup at level 1, it must also be between 2 GB and
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* 512 GB (with the virtual address size therefore 31 to 39 bits). See section
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* D4.2.5 in the ARMv8-A Architecture Reference Manual (DDI 0487A.i) for more
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* information.
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* This file is deprecated and is retained here only for compatibility.
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* The xlat_tables library can be found in `lib/xlat_tables` directory.
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*/
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CASSERT(ADDR_SPACE_SIZE >= (1ull << 31) && ADDR_SPACE_SIZE <= (1ull << 39) &&
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IS_POWER_OF_TWO(ADDR_SPACE_SIZE), assert_valid_addr_space_size);
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#define UNSET_DESC ~0ul
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#define NUM_L1_ENTRIES (ADDR_SPACE_SIZE >> L1_XLAT_ADDRESS_SHIFT)
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static uint64_t l1_xlation_table[NUM_L1_ENTRIES]
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__aligned(NUM_L1_ENTRIES * sizeof(uint64_t));
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static uint64_t xlat_tables[MAX_XLAT_TABLES][XLAT_TABLE_ENTRIES]
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__aligned(XLAT_TABLE_SIZE) __section("xlat_table");
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static unsigned next_xlat;
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static unsigned long max_pa;
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static unsigned long max_va;
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static unsigned long tcr_ps_bits;
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/*
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* Array of all memory regions stored in order of ascending base address.
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* The list is terminated by the first entry with size == 0.
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*/
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static mmap_region_t mmap[MAX_MMAP_REGIONS + 1];
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static void print_mmap(void)
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{
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#if LOG_LEVEL >= LOG_LEVEL_VERBOSE
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debug_print("mmap:\n");
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mmap_region_t *mm = mmap;
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while (mm->size) {
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debug_print(" VA:0x%lx PA:0x%lx size:0x%lx attr:0x%x\n",
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mm->base_va, mm->base_pa, mm->size, mm->attr);
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++mm;
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};
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debug_print("\n");
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#if !ERROR_DEPRECATED
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#include "../xlat_tables/xlat_tables_common.c"
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#include "../xlat_tables/aarch64/xlat_tables.c"
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#endif
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}
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void mmap_add_region(unsigned long base_pa, unsigned long base_va,
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unsigned long size, unsigned attr)
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{
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mmap_region_t *mm = mmap;
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mmap_region_t *mm_last = mm + ARRAY_SIZE(mmap) - 1;
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unsigned long pa_end = base_pa + size - 1;
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unsigned long va_end = base_va + size - 1;
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assert(IS_PAGE_ALIGNED(base_pa));
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assert(IS_PAGE_ALIGNED(base_va));
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assert(IS_PAGE_ALIGNED(size));
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if (!size)
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return;
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/* Find correct place in mmap to insert new region */
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while (mm->base_va < base_va && mm->size)
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++mm;
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/* Make room for new region by moving other regions up by one place */
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memmove(mm + 1, mm, (uintptr_t)mm_last - (uintptr_t)mm);
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/* Check we haven't lost the empty sentinal from the end of the array */
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assert(mm_last->size == 0);
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mm->base_pa = base_pa;
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mm->base_va = base_va;
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mm->size = size;
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mm->attr = attr;
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if (pa_end > max_pa)
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max_pa = pa_end;
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if (va_end > max_va)
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max_va = va_end;
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}
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void mmap_add(const mmap_region_t *mm)
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{
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while (mm->size) {
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mmap_add_region(mm->base_pa, mm->base_va, mm->size, mm->attr);
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++mm;
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}
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}
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static unsigned long mmap_desc(unsigned attr, unsigned long addr_pa,
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unsigned level)
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{
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unsigned long desc = addr_pa;
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int mem_type;
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desc |= level == 3 ? TABLE_DESC : BLOCK_DESC;
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desc |= attr & MT_NS ? LOWER_ATTRS(NS) : 0;
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desc |= attr & MT_RW ? LOWER_ATTRS(AP_RW) : LOWER_ATTRS(AP_RO);
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desc |= LOWER_ATTRS(ACCESS_FLAG);
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mem_type = MT_TYPE(attr);
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if (mem_type == MT_MEMORY) {
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desc |= LOWER_ATTRS(ATTR_IWBWA_OWBWA_NTR_INDEX | ISH);
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if (attr & MT_RW)
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desc |= UPPER_ATTRS(XN);
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} else if (mem_type == MT_NON_CACHEABLE) {
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desc |= LOWER_ATTRS(ATTR_NON_CACHEABLE_INDEX | OSH);
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if (attr & MT_RW)
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desc |= UPPER_ATTRS(XN);
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} else {
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assert(mem_type == MT_DEVICE);
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desc |= LOWER_ATTRS(ATTR_DEVICE_INDEX | OSH);
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desc |= UPPER_ATTRS(XN);
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}
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debug_print((mem_type == MT_MEMORY) ? "MEM" :
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((mem_type == MT_NON_CACHEABLE) ? "NC" : "DEV"));
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debug_print(attr & MT_RW ? "-RW" : "-RO");
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debug_print(attr & MT_NS ? "-NS" : "-S");
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return desc;
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}
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static int mmap_region_attr(mmap_region_t *mm, unsigned long base_va,
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unsigned long size)
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{
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int attr = mm->attr;
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int old_mem_type, new_mem_type;
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for (;;) {
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++mm;
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if (!mm->size)
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return attr; /* Reached end of list */
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if (mm->base_va >= base_va + size)
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return attr; /* Next region is after area so end */
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if (mm->base_va + mm->size <= base_va)
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continue; /* Next region has already been overtaken */
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if ((mm->attr & attr) == attr)
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continue; /* Region doesn't override attribs so skip */
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/*
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* Update memory mapping attributes in 2 steps:
|
||||
* 1) Update access permissions and security state flags
|
||||
* 2) Update memory type.
|
||||
*
|
||||
* See xlat_tables.h for details about the attributes priority
|
||||
* system and the rules dictating whether attributes should be
|
||||
* updated.
|
||||
*/
|
||||
old_mem_type = MT_TYPE(attr);
|
||||
new_mem_type = MT_TYPE(mm->attr);
|
||||
attr &= mm->attr;
|
||||
if (new_mem_type < old_mem_type)
|
||||
attr = (attr & ~MT_TYPE_MASK) | new_mem_type;
|
||||
|
||||
if (mm->base_va > base_va ||
|
||||
mm->base_va + mm->size < base_va + size)
|
||||
return -1; /* Region doesn't fully cover our area */
|
||||
}
|
||||
}
|
||||
|
||||
static mmap_region_t *init_xlation_table(mmap_region_t *mm,
|
||||
unsigned long base_va,
|
||||
unsigned long *table, unsigned level)
|
||||
{
|
||||
unsigned level_size_shift = L1_XLAT_ADDRESS_SHIFT - (level - 1) *
|
||||
XLAT_TABLE_ENTRIES_SHIFT;
|
||||
unsigned level_size = 1 << level_size_shift;
|
||||
unsigned long level_index_mask = XLAT_TABLE_ENTRIES_MASK << level_size_shift;
|
||||
|
||||
assert(level <= 3);
|
||||
|
||||
debug_print("New xlat table:\n");
|
||||
|
||||
do {
|
||||
unsigned long desc = UNSET_DESC;
|
||||
|
||||
if (!mm->size) {
|
||||
/* Done mapping regions; finish zeroing the table */
|
||||
desc = INVALID_DESC;
|
||||
} else if (mm->base_va + mm->size <= base_va) {
|
||||
/* Area now after the region so skip it */
|
||||
++mm;
|
||||
continue;
|
||||
}
|
||||
|
||||
debug_print("%s VA:0x%lx size:0x%x ", get_level_spacer(level),
|
||||
base_va, level_size);
|
||||
|
||||
if (mm->base_va >= base_va + level_size) {
|
||||
/* Next region is after area so nothing to map yet */
|
||||
desc = INVALID_DESC;
|
||||
} else if (mm->base_va <= base_va && mm->base_va + mm->size >=
|
||||
base_va + level_size) {
|
||||
/* Next region covers all of area */
|
||||
int attr = mmap_region_attr(mm, base_va, level_size);
|
||||
if (attr >= 0)
|
||||
desc = mmap_desc(attr,
|
||||
base_va - mm->base_va + mm->base_pa,
|
||||
level);
|
||||
}
|
||||
/* else Next region only partially covers area, so need */
|
||||
|
||||
if (desc == UNSET_DESC) {
|
||||
/* Area not covered by a region so need finer table */
|
||||
unsigned long *new_table = xlat_tables[next_xlat++];
|
||||
assert(next_xlat <= MAX_XLAT_TABLES);
|
||||
desc = TABLE_DESC | (unsigned long)new_table;
|
||||
|
||||
/* Recurse to fill in new table */
|
||||
mm = init_xlation_table(mm, base_va,
|
||||
new_table, level+1);
|
||||
}
|
||||
|
||||
debug_print("\n");
|
||||
|
||||
*table++ = desc;
|
||||
base_va += level_size;
|
||||
} while ((base_va & level_index_mask) && (base_va < ADDR_SPACE_SIZE));
|
||||
|
||||
return mm;
|
||||
}
|
||||
|
||||
static unsigned int calc_physical_addr_size_bits(unsigned long max_addr)
|
||||
{
|
||||
/* Physical address can't exceed 48 bits */
|
||||
assert((max_addr & ADDR_MASK_48_TO_63) == 0);
|
||||
|
||||
/* 48 bits address */
|
||||
if (max_addr & ADDR_MASK_44_TO_47)
|
||||
return TCR_PS_BITS_256TB;
|
||||
|
||||
/* 44 bits address */
|
||||
if (max_addr & ADDR_MASK_42_TO_43)
|
||||
return TCR_PS_BITS_16TB;
|
||||
|
||||
/* 42 bits address */
|
||||
if (max_addr & ADDR_MASK_40_TO_41)
|
||||
return TCR_PS_BITS_4TB;
|
||||
|
||||
/* 40 bits address */
|
||||
if (max_addr & ADDR_MASK_36_TO_39)
|
||||
return TCR_PS_BITS_1TB;
|
||||
|
||||
/* 36 bits address */
|
||||
if (max_addr & ADDR_MASK_32_TO_35)
|
||||
return TCR_PS_BITS_64GB;
|
||||
|
||||
return TCR_PS_BITS_4GB;
|
||||
}
|
||||
|
||||
void init_xlat_tables(void)
|
||||
{
|
||||
print_mmap();
|
||||
init_xlation_table(mmap, 0, l1_xlation_table, 1);
|
||||
tcr_ps_bits = calc_physical_addr_size_bits(max_pa);
|
||||
assert(max_va < ADDR_SPACE_SIZE);
|
||||
}
|
||||
|
||||
/*******************************************************************************
|
||||
* Macro generating the code for the function enabling the MMU in the given
|
||||
* exception level, assuming that the pagetables have already been created.
|
||||
*
|
||||
* _el: Exception level at which the function will run
|
||||
* _tcr_extra: Extra bits to set in the TCR register. This mask will
|
||||
* be OR'ed with the default TCR value.
|
||||
* _tlbi_fct: Function to invalidate the TLBs at the current
|
||||
* exception level
|
||||
******************************************************************************/
|
||||
#define DEFINE_ENABLE_MMU_EL(_el, _tcr_extra, _tlbi_fct) \
|
||||
void enable_mmu_el##_el(uint32_t flags) \
|
||||
{ \
|
||||
uint64_t mair, tcr, ttbr; \
|
||||
uint32_t sctlr; \
|
||||
\
|
||||
assert(IS_IN_EL(_el)); \
|
||||
assert((read_sctlr_el##_el() & SCTLR_M_BIT) == 0); \
|
||||
\
|
||||
/* Set attributes in the right indices of the MAIR */ \
|
||||
mair = MAIR_ATTR_SET(ATTR_DEVICE, ATTR_DEVICE_INDEX); \
|
||||
mair |= MAIR_ATTR_SET(ATTR_IWBWA_OWBWA_NTR, \
|
||||
ATTR_IWBWA_OWBWA_NTR_INDEX); \
|
||||
mair |= MAIR_ATTR_SET(ATTR_NON_CACHEABLE, \
|
||||
ATTR_NON_CACHEABLE_INDEX); \
|
||||
write_mair_el##_el(mair); \
|
||||
\
|
||||
/* Invalidate TLBs at the current exception level */ \
|
||||
_tlbi_fct(); \
|
||||
\
|
||||
/* Set TCR bits as well. */ \
|
||||
/* Inner & outer WBWA & shareable + T0SZ = 32 */ \
|
||||
tcr = TCR_SH_INNER_SHAREABLE | TCR_RGN_OUTER_WBA | \
|
||||
TCR_RGN_INNER_WBA | \
|
||||
(64 - __builtin_ctzl(ADDR_SPACE_SIZE)); \
|
||||
tcr |= _tcr_extra; \
|
||||
write_tcr_el##_el(tcr); \
|
||||
\
|
||||
/* Set TTBR bits as well */ \
|
||||
ttbr = (uint64_t) l1_xlation_table; \
|
||||
write_ttbr0_el##_el(ttbr); \
|
||||
\
|
||||
/* Ensure all translation table writes have drained */ \
|
||||
/* into memory, the TLB invalidation is complete, */ \
|
||||
/* and translation register writes are committed */ \
|
||||
/* before enabling the MMU */ \
|
||||
dsb(); \
|
||||
isb(); \
|
||||
\
|
||||
sctlr = read_sctlr_el##_el(); \
|
||||
sctlr |= SCTLR_WXN_BIT | SCTLR_M_BIT; \
|
||||
\
|
||||
if (flags & DISABLE_DCACHE) \
|
||||
sctlr &= ~SCTLR_C_BIT; \
|
||||
else \
|
||||
sctlr |= SCTLR_C_BIT; \
|
||||
\
|
||||
write_sctlr_el##_el(sctlr); \
|
||||
\
|
||||
/* Ensure the MMU enable takes effect immediately */ \
|
||||
isb(); \
|
||||
}
|
||||
|
||||
/* Define EL1 and EL3 variants of the function enabling the MMU */
|
||||
DEFINE_ENABLE_MMU_EL(1,
|
||||
(tcr_ps_bits << TCR_EL1_IPS_SHIFT),
|
||||
tlbivmalle1)
|
||||
DEFINE_ENABLE_MMU_EL(3,
|
||||
TCR_EL3_RES1 | (tcr_ps_bits << TCR_EL3_PS_SHIFT),
|
||||
tlbialle3)
|
||||
|
|
|
|||
167
lib/xlat_tables/aarch64/xlat_tables.c
Normal file
167
lib/xlat_tables/aarch64/xlat_tables.c
Normal file
|
|
@ -0,0 +1,167 @@
|
|||
/*
|
||||
* Copyright (c) 2014-2016, ARM Limited and Contributors. All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions are met:
|
||||
*
|
||||
* Redistributions of source code must retain the above copyright notice, this
|
||||
* list of conditions and the following disclaimer.
|
||||
*
|
||||
* Redistributions in binary form must reproduce the above copyright notice,
|
||||
* this list of conditions and the following disclaimer in the documentation
|
||||
* and/or other materials provided with the distribution.
|
||||
*
|
||||
* Neither the name of ARM nor the names of its contributors may be used
|
||||
* to endorse or promote products derived from this software without specific
|
||||
* prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
||||
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
|
||||
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
||||
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
||||
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
||||
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
||||
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||||
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#include <arch.h>
|
||||
#include <arch_helpers.h>
|
||||
#include <assert.h>
|
||||
#include <cassert.h>
|
||||
#include <platform_def.h>
|
||||
#include <xlat_tables.h>
|
||||
#include "../xlat_tables_private.h"
|
||||
|
||||
#define IS_POWER_OF_TWO(x) (((x) & ((x) - 1)) == 0)
|
||||
|
||||
/*
|
||||
* The virtual address space size must be a power of two (as set in TCR.T0SZ).
|
||||
* As we start the initial lookup at level 1, it must also be between 2 GB and
|
||||
* 512 GB (with the virtual address size therefore 31 to 39 bits). See section
|
||||
* D4.2.5 in the ARMv8-A Architecture Reference Manual (DDI 0487A.i) for more
|
||||
* information.
|
||||
*/
|
||||
CASSERT(ADDR_SPACE_SIZE >= (1ull << 31) && ADDR_SPACE_SIZE <= (1ull << 39) &&
|
||||
IS_POWER_OF_TWO(ADDR_SPACE_SIZE), assert_valid_addr_space_size);
|
||||
|
||||
#define UNSET_DESC ~0ul
|
||||
#define NUM_L1_ENTRIES (ADDR_SPACE_SIZE >> L1_XLAT_ADDRESS_SHIFT)
|
||||
|
||||
static uint64_t l1_xlation_table[NUM_L1_ENTRIES]
|
||||
__aligned(NUM_L1_ENTRIES * sizeof(uint64_t));
|
||||
|
||||
static unsigned long long tcr_ps_bits;
|
||||
|
||||
static unsigned long long calc_physical_addr_size_bits(
|
||||
unsigned long long max_addr)
|
||||
{
|
||||
/* Physical address can't exceed 48 bits */
|
||||
assert((max_addr & ADDR_MASK_48_TO_63) == 0);
|
||||
|
||||
/* 48 bits address */
|
||||
if (max_addr & ADDR_MASK_44_TO_47)
|
||||
return TCR_PS_BITS_256TB;
|
||||
|
||||
/* 44 bits address */
|
||||
if (max_addr & ADDR_MASK_42_TO_43)
|
||||
return TCR_PS_BITS_16TB;
|
||||
|
||||
/* 42 bits address */
|
||||
if (max_addr & ADDR_MASK_40_TO_41)
|
||||
return TCR_PS_BITS_4TB;
|
||||
|
||||
/* 40 bits address */
|
||||
if (max_addr & ADDR_MASK_36_TO_39)
|
||||
return TCR_PS_BITS_1TB;
|
||||
|
||||
/* 36 bits address */
|
||||
if (max_addr & ADDR_MASK_32_TO_35)
|
||||
return TCR_PS_BITS_64GB;
|
||||
|
||||
return TCR_PS_BITS_4GB;
|
||||
}
|
||||
|
||||
void init_xlat_tables(void)
|
||||
{
|
||||
unsigned long long max_pa;
|
||||
uintptr_t max_va;
|
||||
print_mmap();
|
||||
init_xlation_table(0, l1_xlation_table, 1, &max_va, &max_pa);
|
||||
tcr_ps_bits = calc_physical_addr_size_bits(max_pa);
|
||||
assert(max_va < ADDR_SPACE_SIZE);
|
||||
}
|
||||
|
||||
/*******************************************************************************
|
||||
* Macro generating the code for the function enabling the MMU in the given
|
||||
* exception level, assuming that the pagetables have already been created.
|
||||
*
|
||||
* _el: Exception level at which the function will run
|
||||
* _tcr_extra: Extra bits to set in the TCR register. This mask will
|
||||
* be OR'ed with the default TCR value.
|
||||
* _tlbi_fct: Function to invalidate the TLBs at the current
|
||||
* exception level
|
||||
******************************************************************************/
|
||||
#define DEFINE_ENABLE_MMU_EL(_el, _tcr_extra, _tlbi_fct) \
|
||||
void enable_mmu_el##_el(unsigned int flags) \
|
||||
{ \
|
||||
uint64_t mair, tcr, ttbr; \
|
||||
uint32_t sctlr; \
|
||||
\
|
||||
assert(IS_IN_EL(_el)); \
|
||||
assert((read_sctlr_el##_el() & SCTLR_M_BIT) == 0); \
|
||||
\
|
||||
/* Set attributes in the right indices of the MAIR */ \
|
||||
mair = MAIR_ATTR_SET(ATTR_DEVICE, ATTR_DEVICE_INDEX); \
|
||||
mair |= MAIR_ATTR_SET(ATTR_IWBWA_OWBWA_NTR, \
|
||||
ATTR_IWBWA_OWBWA_NTR_INDEX); \
|
||||
mair |= MAIR_ATTR_SET(ATTR_NON_CACHEABLE, \
|
||||
ATTR_NON_CACHEABLE_INDEX); \
|
||||
write_mair_el##_el(mair); \
|
||||
\
|
||||
/* Invalidate TLBs at the current exception level */ \
|
||||
_tlbi_fct(); \
|
||||
\
|
||||
/* Set TCR bits as well. */ \
|
||||
/* Inner & outer WBWA & shareable + T0SZ = 32 */ \
|
||||
tcr = TCR_SH_INNER_SHAREABLE | TCR_RGN_OUTER_WBA | \
|
||||
TCR_RGN_INNER_WBA | \
|
||||
(64 - __builtin_ctzl(ADDR_SPACE_SIZE)); \
|
||||
tcr |= _tcr_extra; \
|
||||
write_tcr_el##_el(tcr); \
|
||||
\
|
||||
/* Set TTBR bits as well */ \
|
||||
ttbr = (uint64_t) l1_xlation_table; \
|
||||
write_ttbr0_el##_el(ttbr); \
|
||||
\
|
||||
/* Ensure all translation table writes have drained */ \
|
||||
/* into memory, the TLB invalidation is complete, */ \
|
||||
/* and translation register writes are committed */ \
|
||||
/* before enabling the MMU */ \
|
||||
dsb(); \
|
||||
isb(); \
|
||||
\
|
||||
sctlr = read_sctlr_el##_el(); \
|
||||
sctlr |= SCTLR_WXN_BIT | SCTLR_M_BIT; \
|
||||
\
|
||||
if (flags & DISABLE_DCACHE) \
|
||||
sctlr &= ~SCTLR_C_BIT; \
|
||||
else \
|
||||
sctlr |= SCTLR_C_BIT; \
|
||||
\
|
||||
write_sctlr_el##_el(sctlr); \
|
||||
\
|
||||
/* Ensure the MMU enable takes effect immediately */ \
|
||||
isb(); \
|
||||
}
|
||||
|
||||
/* Define EL1 and EL3 variants of the function enabling the MMU */
|
||||
DEFINE_ENABLE_MMU_EL(1,
|
||||
(tcr_ps_bits << TCR_EL1_IPS_SHIFT),
|
||||
tlbivmalle1)
|
||||
DEFINE_ENABLE_MMU_EL(3,
|
||||
TCR_EL3_RES1 | (tcr_ps_bits << TCR_EL3_PS_SHIFT),
|
||||
tlbialle3)
|
||||
281
lib/xlat_tables/xlat_tables_common.c
Normal file
281
lib/xlat_tables/xlat_tables_common.c
Normal file
|
|
@ -0,0 +1,281 @@
|
|||
/*
|
||||
* Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions are met:
|
||||
*
|
||||
* Redistributions of source code must retain the above copyright notice, this
|
||||
* list of conditions and the following disclaimer.
|
||||
*
|
||||
* Redistributions in binary form must reproduce the above copyright notice,
|
||||
* this list of conditions and the following disclaimer in the documentation
|
||||
* and/or other materials provided with the distribution.
|
||||
*
|
||||
* Neither the name of ARM nor the names of its contributors may be used
|
||||
* to endorse or promote products derived from this software without specific
|
||||
* prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
||||
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
|
||||
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
||||
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
||||
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
||||
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
||||
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||||
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#include <arch.h>
|
||||
#include <arch_helpers.h>
|
||||
#include <assert.h>
|
||||
#include <bl_common.h>
|
||||
#include <cassert.h>
|
||||
#include <debug.h>
|
||||
#include <platform_def.h>
|
||||
#include <string.h>
|
||||
#include <xlat_tables.h>
|
||||
|
||||
#if LOG_LEVEL >= LOG_LEVEL_VERBOSE
|
||||
#define LVL0_SPACER ""
|
||||
#define LVL1_SPACER " "
|
||||
#define LVL2_SPACER " "
|
||||
#define LVL3_SPACER " "
|
||||
#define get_level_spacer(level) \
|
||||
(((level) == 0) ? LVL0_SPACER : \
|
||||
(((level) == 1) ? LVL1_SPACER : \
|
||||
(((level) == 2) ? LVL2_SPACER : LVL3_SPACER)))
|
||||
#define debug_print(...) tf_printf(__VA_ARGS__)
|
||||
#else
|
||||
#define debug_print(...) ((void)0)
|
||||
#endif
|
||||
|
||||
#define UNSET_DESC ~0ul
|
||||
|
||||
static uint64_t xlat_tables[MAX_XLAT_TABLES][XLAT_TABLE_ENTRIES]
|
||||
__aligned(XLAT_TABLE_SIZE) __section("xlat_table");
|
||||
|
||||
static unsigned next_xlat;
|
||||
static unsigned long long xlat_max_pa;
|
||||
static uintptr_t xlat_max_va;
|
||||
|
||||
/*
|
||||
* Array of all memory regions stored in order of ascending base address.
|
||||
* The list is terminated by the first entry with size == 0.
|
||||
*/
|
||||
static mmap_region_t mmap[MAX_MMAP_REGIONS + 1];
|
||||
|
||||
|
||||
void print_mmap(void)
|
||||
{
|
||||
#if LOG_LEVEL >= LOG_LEVEL_VERBOSE
|
||||
debug_print("mmap:\n");
|
||||
mmap_region_t *mm = mmap;
|
||||
while (mm->size) {
|
||||
debug_print(" VA:%p PA:0x%llx size:0x%zx attr:0x%x\n",
|
||||
(void *)mm->base_va, mm->base_pa,
|
||||
mm->size, mm->attr);
|
||||
++mm;
|
||||
};
|
||||
debug_print("\n");
|
||||
#endif
|
||||
}
|
||||
|
||||
void mmap_add_region(unsigned long long base_pa, uintptr_t base_va,
|
||||
size_t size, unsigned int attr)
|
||||
{
|
||||
mmap_region_t *mm = mmap;
|
||||
mmap_region_t *mm_last = mm + ARRAY_SIZE(mmap) - 1;
|
||||
unsigned long long pa_end = base_pa + size - 1;
|
||||
uintptr_t va_end = base_va + size - 1;
|
||||
|
||||
assert(IS_PAGE_ALIGNED(base_pa));
|
||||
assert(IS_PAGE_ALIGNED(base_va));
|
||||
assert(IS_PAGE_ALIGNED(size));
|
||||
|
||||
if (!size)
|
||||
return;
|
||||
|
||||
/* Find correct place in mmap to insert new region */
|
||||
while (mm->base_va < base_va && mm->size)
|
||||
++mm;
|
||||
|
||||
/* Make room for new region by moving other regions up by one place */
|
||||
memmove(mm + 1, mm, (uintptr_t)mm_last - (uintptr_t)mm);
|
||||
|
||||
/* Check we haven't lost the empty sentinal from the end of the array */
|
||||
assert(mm_last->size == 0);
|
||||
|
||||
mm->base_pa = base_pa;
|
||||
mm->base_va = base_va;
|
||||
mm->size = size;
|
||||
mm->attr = attr;
|
||||
|
||||
if (pa_end > xlat_max_pa)
|
||||
xlat_max_pa = pa_end;
|
||||
if (va_end > xlat_max_va)
|
||||
xlat_max_va = va_end;
|
||||
}
|
||||
|
||||
void mmap_add(const mmap_region_t *mm)
|
||||
{
|
||||
while (mm->size) {
|
||||
mmap_add_region(mm->base_pa, mm->base_va, mm->size, mm->attr);
|
||||
++mm;
|
||||
}
|
||||
}
|
||||
|
||||
static uint64_t mmap_desc(unsigned attr, unsigned long long addr_pa,
|
||||
int level)
|
||||
{
|
||||
uint64_t desc = addr_pa;
|
||||
int mem_type;
|
||||
|
||||
desc |= level == 3 ? TABLE_DESC : BLOCK_DESC;
|
||||
|
||||
desc |= attr & MT_NS ? LOWER_ATTRS(NS) : 0;
|
||||
|
||||
desc |= attr & MT_RW ? LOWER_ATTRS(AP_RW) : LOWER_ATTRS(AP_RO);
|
||||
|
||||
desc |= LOWER_ATTRS(ACCESS_FLAG);
|
||||
|
||||
mem_type = MT_TYPE(attr);
|
||||
if (mem_type == MT_MEMORY) {
|
||||
desc |= LOWER_ATTRS(ATTR_IWBWA_OWBWA_NTR_INDEX | ISH);
|
||||
if (attr & MT_RW)
|
||||
desc |= UPPER_ATTRS(XN);
|
||||
} else if (mem_type == MT_NON_CACHEABLE) {
|
||||
desc |= LOWER_ATTRS(ATTR_NON_CACHEABLE_INDEX | OSH);
|
||||
if (attr & MT_RW)
|
||||
desc |= UPPER_ATTRS(XN);
|
||||
} else {
|
||||
assert(mem_type == MT_DEVICE);
|
||||
desc |= LOWER_ATTRS(ATTR_DEVICE_INDEX | OSH);
|
||||
desc |= UPPER_ATTRS(XN);
|
||||
}
|
||||
|
||||
debug_print((mem_type == MT_MEMORY) ? "MEM" :
|
||||
((mem_type == MT_NON_CACHEABLE) ? "NC" : "DEV"));
|
||||
debug_print(attr & MT_RW ? "-RW" : "-RO");
|
||||
debug_print(attr & MT_NS ? "-NS" : "-S");
|
||||
|
||||
return desc;
|
||||
}
|
||||
|
||||
static int mmap_region_attr(mmap_region_t *mm, uintptr_t base_va,
|
||||
size_t size)
|
||||
{
|
||||
int attr = mm->attr;
|
||||
int old_mem_type, new_mem_type;
|
||||
|
||||
for (;;) {
|
||||
++mm;
|
||||
|
||||
if (!mm->size)
|
||||
return attr; /* Reached end of list */
|
||||
|
||||
if (mm->base_va >= base_va + size)
|
||||
return attr; /* Next region is after area so end */
|
||||
|
||||
if (mm->base_va + mm->size <= base_va)
|
||||
continue; /* Next region has already been overtaken */
|
||||
|
||||
if ((mm->attr & attr) == attr)
|
||||
continue; /* Region doesn't override attribs so skip */
|
||||
|
||||
/*
|
||||
* Update memory mapping attributes in 2 steps:
|
||||
* 1) Update access permissions and security state flags
|
||||
* 2) Update memory type.
|
||||
*
|
||||
* See xlat_tables.h for details about the attributes priority
|
||||
* system and the rules dictating whether attributes should be
|
||||
* updated.
|
||||
*/
|
||||
old_mem_type = MT_TYPE(attr);
|
||||
new_mem_type = MT_TYPE(mm->attr);
|
||||
attr &= mm->attr;
|
||||
if (new_mem_type < old_mem_type)
|
||||
attr = (attr & ~MT_TYPE_MASK) | new_mem_type;
|
||||
|
||||
if (mm->base_va > base_va ||
|
||||
mm->base_va + mm->size < base_va + size)
|
||||
return -1; /* Region doesn't fully cover our area */
|
||||
}
|
||||
}
|
||||
|
||||
static mmap_region_t *init_xlation_table_inner(mmap_region_t *mm,
|
||||
uintptr_t base_va,
|
||||
uint64_t *table,
|
||||
int level)
|
||||
{
|
||||
unsigned level_size_shift = L1_XLAT_ADDRESS_SHIFT - (level - 1) *
|
||||
XLAT_TABLE_ENTRIES_SHIFT;
|
||||
unsigned level_size = 1 << level_size_shift;
|
||||
unsigned long long level_index_mask = XLAT_TABLE_ENTRIES_MASK <<
|
||||
level_size_shift;
|
||||
|
||||
assert(level > 0 && level <= 3);
|
||||
|
||||
debug_print("New xlat table:\n");
|
||||
|
||||
do {
|
||||
uint64_t desc = UNSET_DESC;
|
||||
|
||||
if (!mm->size) {
|
||||
/* Done mapping regions; finish zeroing the table */
|
||||
desc = INVALID_DESC;
|
||||
} else if (mm->base_va + mm->size <= base_va) {
|
||||
/* Area now after the region so skip it */
|
||||
++mm;
|
||||
continue;
|
||||
}
|
||||
|
||||
debug_print("%s VA:%p size:0x%x ", get_level_spacer(level),
|
||||
(void *)base_va, level_size);
|
||||
|
||||
if (mm->base_va >= base_va + level_size) {
|
||||
/* Next region is after area so nothing to map yet */
|
||||
desc = INVALID_DESC;
|
||||
} else if (mm->base_va <= base_va && mm->base_va + mm->size >=
|
||||
base_va + level_size) {
|
||||
/* Next region covers all of area */
|
||||
int attr = mmap_region_attr(mm, base_va, level_size);
|
||||
if (attr >= 0)
|
||||
desc = mmap_desc(attr,
|
||||
base_va - mm->base_va + mm->base_pa,
|
||||
level);
|
||||
}
|
||||
/* else Next region only partially covers area, so need */
|
||||
|
||||
if (desc == UNSET_DESC) {
|
||||
/* Area not covered by a region so need finer table */
|
||||
uint64_t *new_table = xlat_tables[next_xlat++];
|
||||
assert(next_xlat <= MAX_XLAT_TABLES);
|
||||
desc = TABLE_DESC | (unsigned long)new_table;
|
||||
|
||||
/* Recurse to fill in new table */
|
||||
mm = init_xlation_table_inner(mm, base_va,
|
||||
new_table, level+1);
|
||||
}
|
||||
|
||||
debug_print("\n");
|
||||
|
||||
*table++ = desc;
|
||||
base_va += level_size;
|
||||
} while ((base_va & level_index_mask) && (base_va < ADDR_SPACE_SIZE));
|
||||
|
||||
return mm;
|
||||
}
|
||||
|
||||
void init_xlation_table(uintptr_t base_va, uint64_t *table,
|
||||
int level, uintptr_t *max_va,
|
||||
unsigned long long *max_pa)
|
||||
{
|
||||
|
||||
init_xlation_table_inner(mmap, base_va, table, level);
|
||||
*max_va = xlat_max_va;
|
||||
*max_pa = xlat_max_pa;
|
||||
}
|
||||
39
lib/xlat_tables/xlat_tables_private.h
Normal file
39
lib/xlat_tables/xlat_tables_private.h
Normal file
|
|
@ -0,0 +1,39 @@
|
|||
/*
|
||||
* Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions are met:
|
||||
*
|
||||
* Redistributions of source code must retain the above copyright notice, this
|
||||
* list of conditions and the following disclaimer.
|
||||
*
|
||||
* Redistributions in binary form must reproduce the above copyright notice,
|
||||
* this list of conditions and the following disclaimer in the documentation
|
||||
* and/or other materials provided with the distribution.
|
||||
*
|
||||
* Neither the name of ARM nor the names of its contributors may be used
|
||||
* to endorse or promote products derived from this software without specific
|
||||
* prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
||||
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
|
||||
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
||||
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
||||
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
||||
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
||||
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||||
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#ifndef __XLAT_TABLES_PRIVATE_H__
|
||||
#define __XLAT_TABLES_PRIVATE_H__
|
||||
|
||||
void print_mmap(void);
|
||||
void init_xlation_table(uintptr_t base_va, uint64_t *table,
|
||||
int level, uintptr_t *max_va,
|
||||
unsigned long long *max_pa);
|
||||
|
||||
#endif /* __XLAT_TABLES_PRIVATE_H__ */
|
||||
Loading…
Add table
Reference in a new issue