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Antonio Nino Diaz233c7c12017-03-08 14:40:23 +00001/*
Zelalem Aweke173c6a22021-07-08 17:23:04 -05002 * Copyright (c) 2017-2021, ARM Limited and Contributors. All rights reserved.
Antonio Nino Diaz233c7c12017-03-08 14:40:23 +00003 *
dp-armfa3cf0b2017-05-03 09:38:09 +01004 * SPDX-License-Identifier: BSD-3-Clause
Antonio Nino Diaz233c7c12017-03-08 14:40:23 +00005 */
6
Antonio Nino Diaz50eb3742018-07-24 10:20:53 +01007#ifndef XLAT_TABLES_V2_H
8#define XLAT_TABLES_V2_H
Antonio Nino Diaz233c7c12017-03-08 14:40:23 +00009
Antonio Nino Diaze0f90632018-12-14 00:18:21 +000010#include <lib/xlat_tables/xlat_tables_defs.h>
11#include <lib/xlat_tables/xlat_tables_v2_helpers.h>
Antonio Nino Diaz233c7c12017-03-08 14:40:23 +000012
Julius Werner53456fc2019-07-09 13:49:11 -070013#ifndef __ASSEMBLER__
Antonio Nino Diaz233c7c12017-03-08 14:40:23 +000014#include <stddef.h>
15#include <stdint.h>
Antonio Nino Diaze0f90632018-12-14 00:18:21 +000016
17#include <lib/xlat_tables/xlat_mmu_helpers.h>
Antonio Nino Diaz233c7c12017-03-08 14:40:23 +000018
Sandrine Bailleux8f23fa82017-09-28 21:58:12 +010019/*
20 * Default granularity size for an mmap_region_t.
21 * Useful when no specific granularity is required.
22 *
23 * By default, choose the biggest possible block size allowed by the
24 * architectural state and granule size in order to minimize the number of page
25 * tables required for the mapping.
Antonio Nino Diaz233c7c12017-03-08 14:40:23 +000026 */
Sandrine Bailleux8f23fa82017-09-28 21:58:12 +010027#define REGION_DEFAULT_GRANULARITY XLAT_BLOCK_SIZE(MIN_LVL_BLOCK_DESC)
28
29/* Helper macro to define an mmap_region_t. */
30#define MAP_REGION(_pa, _va, _sz, _attr) \
Antonio Nino Diaz50eb3742018-07-24 10:20:53 +010031 MAP_REGION_FULL_SPEC(_pa, _va, _sz, _attr, REGION_DEFAULT_GRANULARITY)
Antonio Nino Diaz233c7c12017-03-08 14:40:23 +000032
Sandrine Bailleux8f23fa82017-09-28 21:58:12 +010033/* Helper macro to define an mmap_region_t with an identity mapping. */
34#define MAP_REGION_FLAT(_adr, _sz, _attr) \
35 MAP_REGION(_adr, _adr, _sz, _attr)
36
37/*
Antonio Nino Diazc0033282018-11-20 16:03:11 +000038 * Helper macro to define entries for mmap_region_t. It allows to define 'pa'
39 * and sets 'va' to 0 for each region. To be used with mmap_add_alloc_va().
40 */
41#define MAP_REGION_ALLOC_VA(pa, sz, attr) MAP_REGION(pa, 0, sz, attr)
42
43/*
Sandrine Bailleux8f23fa82017-09-28 21:58:12 +010044 * Helper macro to define an mmap_region_t to map with the desired granularity
45 * of translation tables.
46 *
47 * The granularity value passed to this macro must be a valid block or page
48 * size. When using a 4KB translation granule, this might be 4KB, 2MB or 1GB.
49 * Passing REGION_DEFAULT_GRANULARITY is also allowed and means that the library
50 * is free to choose the granularity for this region. In this case, it is
51 * equivalent to the MAP_REGION() macro.
Antonio Nino Diaz233c7c12017-03-08 14:40:23 +000052 */
Sandrine Bailleux8f23fa82017-09-28 21:58:12 +010053#define MAP_REGION2(_pa, _va, _sz, _attr, _gr) \
Antonio Nino Diaz50eb3742018-07-24 10:20:53 +010054 MAP_REGION_FULL_SPEC(_pa, _va, _sz, _attr, _gr)
Antonio Nino Diaz233c7c12017-03-08 14:40:23 +000055
56/*
Antonio Nino Diaz8643a812018-06-21 14:39:16 +010057 * Shifts and masks to access fields of an mmap attribute
Antonio Nino Diaz233c7c12017-03-08 14:40:23 +000058 */
Varun Wadekarc6a11f62017-05-25 18:04:48 -070059#define MT_TYPE_MASK U(0x7)
Antonio Nino Diaz233c7c12017-03-08 14:40:23 +000060#define MT_TYPE(_attr) ((_attr) & MT_TYPE_MASK)
61/* Access permissions (RO/RW) */
Varun Wadekarc6a11f62017-05-25 18:04:48 -070062#define MT_PERM_SHIFT U(3)
Zelalem Aweke173c6a22021-07-08 17:23:04 -050063
64/* Physical address space (SECURE/NS/Root/Realm) */
65#define MT_PAS_SHIFT U(4)
66#define MT_PAS_MASK (U(3) << MT_PAS_SHIFT)
67#define MT_PAS(_attr) ((_attr) & MT_PAS_MASK)
68
Antonio Nino Diaz233c7c12017-03-08 14:40:23 +000069/* Access permissions for instruction execution (EXECUTE/EXECUTE_NEVER) */
Zelalem Aweke173c6a22021-07-08 17:23:04 -050070#define MT_EXECUTE_SHIFT U(6)
Antonio Nino Diaz8643a812018-06-21 14:39:16 +010071/* In the EL1&0 translation regime, User (EL0) or Privileged (EL1). */
Zelalem Aweke173c6a22021-07-08 17:23:04 -050072#define MT_USER_SHIFT U(7)
Pramod Kumar316b73b2020-02-19 10:39:10 +053073
74/* Shareability attribute for the memory region */
Zelalem Aweke173c6a22021-07-08 17:23:04 -050075#define MT_SHAREABILITY_SHIFT U(8)
Pramod Kumar316b73b2020-02-19 10:39:10 +053076#define MT_SHAREABILITY_MASK (U(3) << MT_SHAREABILITY_SHIFT)
77#define MT_SHAREABILITY(_attr) ((_attr) & MT_SHAREABILITY_MASK)
Zelalem Aweke173c6a22021-07-08 17:23:04 -050078
Antonio Nino Diazac998032017-02-27 17:23:54 +000079/* All other bits are reserved */
Antonio Nino Diaz233c7c12017-03-08 14:40:23 +000080
81/*
82 * Memory mapping attributes
83 */
Antonio Nino Diaz8643a812018-06-21 14:39:16 +010084
85/*
86 * Memory types supported.
87 * These are organised so that, going down the list, the memory types are
88 * getting weaker; conversely going up the list the memory types are getting
89 * stronger.
90 */
91#define MT_DEVICE U(0)
92#define MT_NON_CACHEABLE U(1)
93#define MT_MEMORY U(2)
94/* Values up to 7 are reserved to add new memory types in the future */
Antonio Nino Diaz233c7c12017-03-08 14:40:23 +000095
Antonio Nino Diaz8643a812018-06-21 14:39:16 +010096#define MT_RO (U(0) << MT_PERM_SHIFT)
97#define MT_RW (U(1) << MT_PERM_SHIFT)
Antonio Nino Diaz233c7c12017-03-08 14:40:23 +000098
Zelalem Aweke173c6a22021-07-08 17:23:04 -050099#define MT_SECURE (U(0) << MT_PAS_SHIFT)
100#define MT_NS (U(1) << MT_PAS_SHIFT)
101#define MT_ROOT (U(2) << MT_PAS_SHIFT)
102#define MT_REALM (U(3) << MT_PAS_SHIFT)
Antonio Nino Diaz233c7c12017-03-08 14:40:23 +0000103
Antonio Nino Diaz8643a812018-06-21 14:39:16 +0100104/*
105 * Access permissions for instruction execution are only relevant for normal
106 * read-only memory, i.e. MT_MEMORY | MT_RO. They are ignored (and potentially
107 * overridden) otherwise:
108 * - Device memory is always marked as execute-never.
109 * - Read-write normal memory is always marked as execute-never.
110 */
111#define MT_EXECUTE (U(0) << MT_EXECUTE_SHIFT)
112#define MT_EXECUTE_NEVER (U(1) << MT_EXECUTE_SHIFT)
Antonio Nino Diazdcf9d922017-10-04 16:52:15 +0100113
Antonio Nino Diaz8643a812018-06-21 14:39:16 +0100114/*
115 * When mapping a region at EL0 or EL1, this attribute will be used to determine
116 * if a User mapping (EL0) will be created or a Privileged mapping (EL1).
117 */
118#define MT_USER (U(1) << MT_USER_SHIFT)
119#define MT_PRIVILEGED (U(0) << MT_USER_SHIFT)
Antonio Nino Diaz233c7c12017-03-08 14:40:23 +0000120
Pramod Kumar316b73b2020-02-19 10:39:10 +0530121/*
122 * Shareability defines the visibility of any cache changes to
123 * all masters belonging to a shareable domain.
124 *
125 * MT_SHAREABILITY_ISH: For inner shareable domain
126 * MT_SHAREABILITY_OSH: For outer shareable domain
127 * MT_SHAREABILITY_NSH: For non shareable domain
128 */
129#define MT_SHAREABILITY_ISH (U(1) << MT_SHAREABILITY_SHIFT)
130#define MT_SHAREABILITY_OSH (U(2) << MT_SHAREABILITY_SHIFT)
131#define MT_SHAREABILITY_NSH (U(3) << MT_SHAREABILITY_SHIFT)
132
Antonio Nino Diazdcf9d922017-10-04 16:52:15 +0100133/* Compound attributes for most common usages */
Antonio Nino Diaz8643a812018-06-21 14:39:16 +0100134#define MT_CODE (MT_MEMORY | MT_RO | MT_EXECUTE)
135#define MT_RO_DATA (MT_MEMORY | MT_RO | MT_EXECUTE_NEVER)
136#define MT_RW_DATA (MT_MEMORY | MT_RW | MT_EXECUTE_NEVER)
137
Antonio Nino Diaz233c7c12017-03-08 14:40:23 +0000138/*
139 * Structure for specifying a single region of memory.
140 */
141typedef struct mmap_region {
142 unsigned long long base_pa;
143 uintptr_t base_va;
144 size_t size;
Antonio Nino Diaz8643a812018-06-21 14:39:16 +0100145 unsigned int attr;
Sandrine Bailleux8f23fa82017-09-28 21:58:12 +0100146 /* Desired granularity. See the MAP_REGION2() macro for more details. */
147 size_t granularity;
Antonio Nino Diaz233c7c12017-03-08 14:40:23 +0000148} mmap_region_t;
149
Sandrine Bailleux3120ea22017-07-10 13:37:48 +0100150/*
Antonio Nino Diaz9d596c42018-07-12 15:43:07 +0100151 * Translation regimes supported by this library. EL_REGIME_INVALID tells the
152 * library to detect it at runtime.
Douglas Raillard2d545792017-09-25 15:23:22 +0100153 */
Antonio Nino Diazf1b84f62018-07-03 11:58:49 +0100154#define EL1_EL0_REGIME 1
Antonio Nino Diaz128de8d2018-08-07 19:59:49 +0100155#define EL2_REGIME 2
Antonio Nino Diazf1b84f62018-07-03 11:58:49 +0100156#define EL3_REGIME 3
Antonio Nino Diaz9d596c42018-07-12 15:43:07 +0100157#define EL_REGIME_INVALID -1
Douglas Raillard2d545792017-09-25 15:23:22 +0100158
Zelalem Aweke173c6a22021-07-08 17:23:04 -0500159/* Memory type for EL3 regions. With RME, EL3 is in ROOT PAS */
160#if ENABLE_RME
161#define EL3_PAS MT_ROOT
162#else
163#define EL3_PAS MT_SECURE
164#endif /* ENABLE_RME */
165
Douglas Raillard2d545792017-09-25 15:23:22 +0100166/*
Sandrine Bailleux3120ea22017-07-10 13:37:48 +0100167 * Declare the translation context type.
168 * Its definition is private.
169 */
170typedef struct xlat_ctx xlat_ctx_t;
171
172/*
173 * Statically allocate a translation context and associated structures. Also
174 * initialize them.
175 *
176 * _ctx_name:
177 * Prefix for the translation context variable.
178 * E.g. If _ctx_name is 'foo', the variable will be called 'foo_xlat_ctx'.
179 * Useful to distinguish multiple contexts from one another.
180 *
181 * _mmap_count:
182 * Number of mmap_region_t to allocate.
183 * Would typically be MAX_MMAP_REGIONS for the translation context describing
184 * the BL image currently executing.
185 *
186 * _xlat_tables_count:
187 * Number of sub-translation tables to allocate.
188 * Would typically be MAX_XLAT_TABLES for the translation context describing
189 * the BL image currently executing.
190 * Note that this is only for sub-tables ; at the initial lookup level, there
191 * is always a single table.
192 *
193 * _virt_addr_space_size, _phy_addr_space_size:
194 * Size (in bytes) of the virtual (resp. physical) address space.
195 * Would typically be PLAT_VIRT_ADDR_SPACE_SIZE
196 * (resp. PLAT_PHY_ADDR_SPACE_SIZE) for the translation context describing the
197 * BL image currently executing.
198 */
Antonio Nino Diazf1b84f62018-07-03 11:58:49 +0100199#define REGISTER_XLAT_CONTEXT(_ctx_name, _mmap_count, _xlat_tables_count, \
Masahiro Yamadaf5f203a2020-03-26 13:18:48 +0900200 _virt_addr_space_size, _phy_addr_space_size) \
Antonio Nino Diaz50eb3742018-07-24 10:20:53 +0100201 REGISTER_XLAT_CONTEXT_FULL_SPEC(_ctx_name, (_mmap_count), \
Antonio Nino Diazf1b84f62018-07-03 11:58:49 +0100202 (_xlat_tables_count), \
203 (_virt_addr_space_size), \
204 (_phy_addr_space_size), \
Masahiro Yamada0db23752020-03-06 19:21:26 +0900205 EL_REGIME_INVALID, \
Chris Kay33bfc5e2023-02-14 11:30:04 +0000206 ".xlat_table", ".base_xlat_table")
Antonio Nino Diazdcf9d922017-10-04 16:52:15 +0100207
208/*
Antonio Nino Diaz086fbd62017-11-17 11:48:55 +0000209 * Same as REGISTER_XLAT_CONTEXT plus the additional parameters:
210 *
211 * _xlat_regime:
212 * Specify the translation regime managed by this xlat_ctx_t instance. The
Antonio Nino Diazf1b84f62018-07-03 11:58:49 +0100213 * values are the one from the EL*_REGIME definitions.
Antonio Nino Diaz086fbd62017-11-17 11:48:55 +0000214 *
215 * _section_name:
216 * Specify the name of the section where the translation tables have to be
217 * placed by the linker.
Masahisa Kojima813b50b2020-06-02 05:54:13 +0900218 *
219 * _base_table_section_name:
220 * Specify the name of the section where the base translation tables have to
221 * be placed by the linker.
Antonio Nino Diazdcf9d922017-10-04 16:52:15 +0100222 */
Antonio Nino Diazf1b84f62018-07-03 11:58:49 +0100223#define REGISTER_XLAT_CONTEXT2(_ctx_name, _mmap_count, _xlat_tables_count, \
224 _virt_addr_space_size, _phy_addr_space_size, \
Masahisa Kojima813b50b2020-06-02 05:54:13 +0900225 _xlat_regime, _section_name, _base_table_section_name) \
Antonio Nino Diaz50eb3742018-07-24 10:20:53 +0100226 REGISTER_XLAT_CONTEXT_FULL_SPEC(_ctx_name, (_mmap_count), \
Antonio Nino Diazf1b84f62018-07-03 11:58:49 +0100227 (_xlat_tables_count), \
228 (_virt_addr_space_size), \
229 (_phy_addr_space_size), \
Masahiro Yamada0db23752020-03-06 19:21:26 +0900230 (_xlat_regime), \
Masahisa Kojima813b50b2020-06-02 05:54:13 +0900231 (_section_name), (_base_table_section_name) \
Masahiro Yamada0db23752020-03-06 19:21:26 +0900232)
Sandrine Bailleux3120ea22017-07-10 13:37:48 +0100233
Sandrine Bailleux66342932017-07-18 13:26:36 +0100234/******************************************************************************
235 * Generic translation table APIs.
236 * Each API comes in 2 variants:
237 * - one that acts on the current translation context for this BL image
238 * - another that acts on the given translation context instead. This variant
239 * is named after the 1st version, with an additional '_ctx' suffix.
240 *****************************************************************************/
Antonio Nino Diaz9b11f392017-05-08 16:43:53 +0100241
242/*
243 * Initialize translation tables from the current list of mmap regions. Calling
244 * this function marks the transition point after which static regions can no
245 * longer be added.
246 */
Antonio Nino Diaz233c7c12017-03-08 14:40:23 +0000247void init_xlat_tables(void);
Sandrine Bailleux66342932017-07-18 13:26:36 +0100248void init_xlat_tables_ctx(xlat_ctx_t *ctx);
Antonio Nino Diaz233c7c12017-03-08 14:40:23 +0000249
250/*
Antonio Nino Diaz675d1552018-10-30 11:36:47 +0000251 * Fill all fields of a dynamic translation tables context. It must be done
252 * either statically with REGISTER_XLAT_CONTEXT() or at runtime with this
253 * function.
254 */
255void xlat_setup_dynamic_ctx(xlat_ctx_t *ctx, unsigned long long pa_max,
256 uintptr_t va_max, struct mmap_region *mmap,
257 unsigned int mmap_num, uint64_t **tables,
258 unsigned int tables_num, uint64_t *base_table,
259 int xlat_regime, int *mapped_regions);
260
261/*
Antonio Nino Diaz9b11f392017-05-08 16:43:53 +0100262 * Add a static region with defined base PA and base VA. This function can only
263 * be used before initializing the translation tables. The region cannot be
264 * removed afterwards.
Antonio Nino Diaz233c7c12017-03-08 14:40:23 +0000265 */
266void mmap_add_region(unsigned long long base_pa, uintptr_t base_va,
Antonio Nino Diaz8643a812018-06-21 14:39:16 +0100267 size_t size, unsigned int attr);
Sandrine Bailleux66342932017-07-18 13:26:36 +0100268void mmap_add_region_ctx(xlat_ctx_t *ctx, const mmap_region_t *mm);
Antonio Nino Diaz233c7c12017-03-08 14:40:23 +0000269
270/*
Sandrine Bailleux66342932017-07-18 13:26:36 +0100271 * Add an array of static regions with defined base PA and base VA. This
272 * function can only be used before initializing the translation tables. The
273 * regions cannot be removed afterwards.
274 */
275void mmap_add(const mmap_region_t *mm);
276void mmap_add_ctx(xlat_ctx_t *ctx, const mmap_region_t *mm);
277
Antonio Nino Diazc0033282018-11-20 16:03:11 +0000278/*
279 * Add a region with defined base PA. Returns base VA calculated using the
280 * highest existing region in the mmap array even if it fails to allocate the
281 * region.
282 */
283void mmap_add_region_alloc_va(unsigned long long base_pa, uintptr_t *base_va,
284 size_t size, unsigned int attr);
285void mmap_add_region_alloc_va_ctx(xlat_ctx_t *ctx, mmap_region_t *mm);
286
287/*
288 * Add an array of static regions with defined base PA, and fill the base VA
289 * field on the array of structs. This function can only be used before
290 * initializing the translation tables. The regions cannot be removed afterwards.
291 */
292void mmap_add_alloc_va(mmap_region_t *mm);
Sandrine Bailleux66342932017-07-18 13:26:36 +0100293
294#if PLAT_XLAT_TABLES_DYNAMIC
295/*
Antonio Nino Diaz9b11f392017-05-08 16:43:53 +0100296 * Add a dynamic region with defined base PA and base VA. This type of region
297 * can be added and removed even after the translation tables are initialized.
Antonio Nino Diazac998032017-02-27 17:23:54 +0000298 *
299 * Returns:
300 * 0: Success.
301 * EINVAL: Invalid values were used as arguments.
302 * ERANGE: Memory limits were surpassed.
303 * ENOMEM: Not enough space in the mmap array or not enough free xlat tables.
304 * EPERM: It overlaps another region in an invalid way.
305 */
306int mmap_add_dynamic_region(unsigned long long base_pa, uintptr_t base_va,
Antonio Nino Diaz8643a812018-06-21 14:39:16 +0100307 size_t size, unsigned int attr);
Sandrine Bailleux66342932017-07-18 13:26:36 +0100308int mmap_add_dynamic_region_ctx(xlat_ctx_t *ctx, mmap_region_t *mm);
Antonio Nino Diazac998032017-02-27 17:23:54 +0000309
310/*
Antonio Nino Diazc0033282018-11-20 16:03:11 +0000311 * Add a dynamic region with defined base PA. Returns base VA calculated using
312 * the highest existing region in the mmap array even if it fails to allocate
313 * the region.
314 *
315 * mmap_add_dynamic_region_alloc_va() returns the allocated VA in 'base_va'.
316 * mmap_add_dynamic_region_alloc_va_ctx() returns it in 'mm->base_va'.
317 *
318 * It returns the same error values as mmap_add_dynamic_region().
319 */
320int mmap_add_dynamic_region_alloc_va(unsigned long long base_pa,
321 uintptr_t *base_va,
322 size_t size, unsigned int attr);
323int mmap_add_dynamic_region_alloc_va_ctx(xlat_ctx_t *ctx, mmap_region_t *mm);
324
325/*
Antonio Nino Diazac998032017-02-27 17:23:54 +0000326 * Remove a region with the specified base VA and size. Only dynamic regions can
Antonio Nino Diaz9b11f392017-05-08 16:43:53 +0100327 * be removed, and they can be removed even if the translation tables are
328 * initialized.
Antonio Nino Diazac998032017-02-27 17:23:54 +0000329 *
330 * Returns:
331 * 0: Success.
332 * EINVAL: The specified region wasn't found.
333 * EPERM: Trying to remove a static region.
334 */
335int mmap_remove_dynamic_region(uintptr_t base_va, size_t size);
Sandrine Bailleux66342932017-07-18 13:26:36 +0100336int mmap_remove_dynamic_region_ctx(xlat_ctx_t *ctx,
337 uintptr_t base_va,
338 size_t size);
339
340#endif /* PLAT_XLAT_TABLES_DYNAMIC */
Antonio Nino Diazac998032017-02-27 17:23:54 +0000341
Sandrine Bailleuxc3708e22017-10-13 14:17:09 +0100342/*
Sandrine Bailleux439c9012017-10-17 12:02:03 +0100343 * Change the memory attributes of the memory region starting from a given
344 * virtual address in a set of translation tables.
345 *
346 * This function can only be used after the translation tables have been
347 * initialized.
348 *
349 * The base address of the memory region must be aligned on a page boundary.
350 * The size of this memory region must be a multiple of a page size.
351 * The memory region must be already mapped by the given translation tables
352 * and it must be mapped at the granularity of a page.
353 *
354 * Return 0 on success, a negative value on error.
355 *
356 * In case of error, the memory attributes remain unchanged and this function
357 * has no effect.
358 *
359 * ctx
360 * Translation context to work on.
361 * base_va:
362 * Virtual address of the 1st page to change the attributes of.
363 * size:
364 * Size in bytes of the memory region.
365 * attr:
366 * New attributes of the page tables. The attributes that can be changed are
367 * data access (MT_RO/MT_RW), instruction access (MT_EXECUTE_NEVER/MT_EXECUTE)
368 * and user/privileged access (MT_USER/MT_PRIVILEGED) in the case of contexts
369 * that are used in the EL1&0 translation regime. Also, note that this
370 * function doesn't allow to remap a region as RW and executable, or to remap
371 * device memory as executable.
372 *
373 * NOTE: The caller of this function must be able to write to the translation
374 * tables, i.e. the memory where they are stored must be mapped with read-write
375 * access permissions. This function assumes it is the case. If this is not
376 * the case then this function might trigger a data abort exception.
377 *
378 * NOTE2: The caller is responsible for making sure that the targeted
379 * translation tables are not modified by any other code while this function is
380 * executing.
381 */
Antonio Nino Diaz6c4c9ee2018-08-05 15:34:10 +0100382int xlat_change_mem_attributes_ctx(const xlat_ctx_t *ctx, uintptr_t base_va,
383 size_t size, uint32_t attr);
384int xlat_change_mem_attributes(uintptr_t base_va, size_t size, uint32_t attr);
Sandrine Bailleux439c9012017-10-17 12:02:03 +0100385
Petre-Ionut Tudore5a6fef2019-11-07 15:18:03 +0000386#if PLAT_RO_XLAT_TABLES
387/*
388 * Change the memory attributes of the memory region encompassing the higher
389 * level translation tables to secure read-only data.
390 *
391 * Return 0 on success, a negative error code on error.
392 */
393int xlat_make_tables_readonly(void);
394#endif
395
Sandrine Bailleux439c9012017-10-17 12:02:03 +0100396/*
Sandrine Bailleuxc3708e22017-10-13 14:17:09 +0100397 * Query the memory attributes of a memory page in a set of translation tables.
398 *
399 * Return 0 on success, a negative error code on error.
Antonio Nino Diaz6c4c9ee2018-08-05 15:34:10 +0100400 * On success, the attributes are stored into *attr.
Sandrine Bailleuxc3708e22017-10-13 14:17:09 +0100401 *
402 * ctx
403 * Translation context to work on.
404 * base_va
405 * Virtual address of the page to get the attributes of.
406 * There are no alignment restrictions on this address. The attributes of the
407 * memory page it lies within are returned.
Antonio Nino Diaz6c4c9ee2018-08-05 15:34:10 +0100408 * attr
Sandrine Bailleuxc3708e22017-10-13 14:17:09 +0100409 * Output parameter where to store the attributes of the targeted memory page.
410 */
Antonio Nino Diaz6c4c9ee2018-08-05 15:34:10 +0100411int xlat_get_mem_attributes_ctx(const xlat_ctx_t *ctx, uintptr_t base_va,
412 uint32_t *attr);
413int xlat_get_mem_attributes(uintptr_t base_va, uint32_t *attr);
Sandrine Bailleuxc3708e22017-10-13 14:17:09 +0100414
Julius Werner53456fc2019-07-09 13:49:11 -0700415#endif /*__ASSEMBLER__*/
Antonio Nino Diaz50eb3742018-07-24 10:20:53 +0100416#endif /* XLAT_TABLES_V2_H */