1 /*
2 * Copyright (c) 2013-2024, Arm Limited and Contributors. All rights reserved.
3 *
4 * SPDX-License-Identifier: BSD-3-Clause
5 */
6
7 #ifndef PLATFORM_H
8 #define PLATFORM_H
9
10 #include <stdint.h>
11
12 #include <lib/psci/psci.h>
13 #if defined(SPD_spmd)
14 #include <services/spm_core_manifest.h>
15 #endif
16 #if ENABLE_RME
17 #include <services/rmm_core_manifest.h>
18 #endif
19 #include <drivers/fwu/fwu_metadata.h>
20 #if TRNG_SUPPORT
21 #include "plat_trng.h"
22 #endif /* TRNG_SUPPORT */
23 #if DRTM_SUPPORT
24 #include "plat_drtm.h"
25 #endif /* DRTM_SUPPORT */
26
27 /*******************************************************************************
28 * Forward declarations
29 ******************************************************************************/
30 struct auth_img_desc_s;
31 struct meminfo;
32 struct image_info;
33 struct entry_point_info;
34 struct image_desc;
35 struct bl_load_info;
36 struct bl_params;
37 struct mmap_region;
38 struct spm_mm_boot_info;
39 struct sp_res_desc;
40 struct rmm_manifest;
41 enum fw_enc_status_t;
42
43 /*******************************************************************************
44 * plat_get_rotpk_info() flags
45 ******************************************************************************/
46 #define ROTPK_IS_HASH (1 << 0)
47
48 /* Flag used to skip verification of the certificate ROTPK while the platform
49 ROTPK is not deployed */
50 #define ROTPK_NOT_DEPLOYED (1 << 1)
51
is_rotpk_flags_valid(unsigned int flags)52 static inline bool is_rotpk_flags_valid(unsigned int flags)
53 {
54 unsigned int valid_flags = ROTPK_IS_HASH;
55 return (flags == ROTPK_NOT_DEPLOYED) || ((flags & ~valid_flags) == 0);
56 }
57
58 /*******************************************************************************
59 * plat_get_enc_key_info() flags
60 ******************************************************************************/
61 /*
62 * Flag used to notify caller that information provided in key buffer is an
63 * identifier rather than an actual key.
64 */
65 #define ENC_KEY_IS_IDENTIFIER (1 << 0)
66
67 /*******************************************************************************
68 * Function declarations
69 ******************************************************************************/
70 /*******************************************************************************
71 * Mandatory common functions
72 ******************************************************************************/
73 unsigned int plat_get_syscnt_freq2(void);
74
75 int plat_get_image_source(unsigned int image_id,
76 uintptr_t *dev_handle,
77 uintptr_t *image_spec);
78 uintptr_t plat_get_ns_image_entrypoint(void);
79 unsigned int plat_my_core_pos(void);
80 int plat_core_pos_by_mpidr(u_register_t mpidr);
81 int plat_get_mbedtls_heap(void **heap_addr, size_t *heap_size);
82
83 /*******************************************************************************
84 * Simple routine to determine whether a mpidr is valid or not.
85 ******************************************************************************/
is_valid_mpidr(u_register_t mpidr)86 static inline bool is_valid_mpidr(u_register_t mpidr)
87 {
88 int pos = plat_core_pos_by_mpidr(mpidr);
89
90 if ((pos < 0) || ((unsigned int)pos >= PLATFORM_CORE_COUNT)) {
91 return false;
92 }
93
94 return true;
95 }
96
97 #if STACK_PROTECTOR_ENABLED
98 /*
99 * Return a new value to be used for the stack protection's canary.
100 *
101 * Ideally, this value is a random number that is impossible to predict by an
102 * attacker.
103 */
104 u_register_t plat_get_stack_protector_canary(void);
105 #endif /* STACK_PROTECTOR_ENABLED */
106
107 /*******************************************************************************
108 * Mandatory interrupt management functions
109 ******************************************************************************/
110 uint32_t plat_ic_get_pending_interrupt_id(void);
111 uint32_t plat_ic_get_pending_interrupt_type(void);
112 uint32_t plat_ic_acknowledge_interrupt(void);
113 uint32_t plat_ic_get_interrupt_type(uint32_t id);
114 void plat_ic_end_of_interrupt(uint32_t id);
115 uint32_t plat_interrupt_type_to_line(uint32_t type,
116 uint32_t security_state);
117
118 /*******************************************************************************
119 * Optional interrupt management functions, depending on chosen EL3 components.
120 ******************************************************************************/
121 unsigned int plat_ic_get_running_priority(void);
122 int plat_ic_is_spi(unsigned int id);
123 int plat_ic_is_ppi(unsigned int id);
124 int plat_ic_is_sgi(unsigned int id);
125 unsigned int plat_ic_get_interrupt_active(unsigned int id);
126 void plat_ic_disable_interrupt(unsigned int id);
127 void plat_ic_enable_interrupt(unsigned int id);
128 bool plat_ic_has_interrupt_type(unsigned int type);
129 void plat_ic_set_interrupt_type(unsigned int id, unsigned int type);
130 void plat_ic_set_interrupt_priority(unsigned int id, unsigned int priority);
131 void plat_ic_raise_el3_sgi(int sgi_num, u_register_t target);
132 void plat_ic_raise_ns_sgi(int sgi_num, u_register_t target);
133 void plat_ic_raise_s_el1_sgi(int sgi_num, u_register_t target);
134 void plat_ic_set_spi_routing(unsigned int id, unsigned int routing_mode,
135 u_register_t mpidr);
136 void plat_ic_set_interrupt_pending(unsigned int id);
137 void plat_ic_clear_interrupt_pending(unsigned int id);
138 unsigned int plat_ic_set_priority_mask(unsigned int mask);
139 unsigned int plat_ic_deactivate_priority(unsigned int mask);
140 unsigned int plat_ic_get_interrupt_id(unsigned int raw);
141
142 /*******************************************************************************
143 * Optional common functions (may be overridden)
144 ******************************************************************************/
145 uintptr_t plat_get_my_stack(void);
146 void plat_report_exception(unsigned int exception_type);
147 void plat_report_prefetch_abort(unsigned int fault_address);
148 void plat_report_data_abort(unsigned int fault_address);
149 int plat_crash_console_init(void);
150 int plat_crash_console_putc(int c);
151 void plat_crash_console_flush(void);
152 void plat_error_handler(int err) __dead2;
153 void plat_panic_handler(void) __dead2;
154 void plat_system_reset(void) __dead2;
155 const char *plat_log_get_prefix(unsigned int log_level);
156 void bl2_plat_preload_setup(void);
157 int plat_try_next_boot_source(void);
158
159 #if MEASURED_BOOT
160 int plat_mboot_measure_image(unsigned int image_id, image_info_t *image_data);
161 int plat_mboot_measure_critical_data(unsigned int critical_data_id,
162 const void *base,
163 size_t size);
164 int plat_mboot_measure_key(const void *pk_oid, const void *pk_ptr,
165 size_t pk_len);
166 #else
plat_mboot_measure_image(unsigned int image_id __unused,image_info_t * image_data __unused)167 static inline int plat_mboot_measure_image(unsigned int image_id __unused,
168 image_info_t *image_data __unused)
169 {
170 return 0;
171 }
plat_mboot_measure_critical_data(unsigned int critical_data_id __unused,const void * base __unused,size_t size __unused)172 static inline int plat_mboot_measure_critical_data(
173 unsigned int critical_data_id __unused,
174 const void *base __unused,
175 size_t size __unused)
176 {
177 return 0;
178 }
plat_mboot_measure_key(const void * pk_oid __unused,const void * pk_ptr __unused,size_t pk_len __unused)179 static inline int plat_mboot_measure_key(const void *pk_oid __unused,
180 const void *pk_ptr __unused,
181 size_t pk_len __unused)
182 {
183 return 0;
184 }
185 #endif /* MEASURED_BOOT */
186
187 /*******************************************************************************
188 * Mandatory BL1 functions
189 ******************************************************************************/
190 void bl1_early_platform_setup(void);
191 void bl1_plat_arch_setup(void);
192 void bl1_platform_setup(void);
193 struct meminfo *bl1_plat_sec_mem_layout(void);
194
195 /*******************************************************************************
196 * Optional EL3 component functions in BL31
197 ******************************************************************************/
198
199 /* SDEI platform functions */
200 #if SDEI_SUPPORT
201 void plat_sdei_setup(void);
202 int plat_sdei_validate_entry_point(uintptr_t ep, unsigned int client_mode);
203 void plat_sdei_handle_masked_trigger(uint64_t mpidr, unsigned int intr);
204 #endif
205
206 void plat_default_ea_handler(unsigned int ea_reason, uint64_t syndrome, void *cookie,
207 void *handle, uint64_t flags);
208 void plat_ea_handler(unsigned int ea_reason, uint64_t syndrome, void *cookie,
209 void *handle, uint64_t flags);
210
211 /*
212 * The following function is mandatory when the
213 * firmware update feature is used.
214 */
215 int bl1_plat_mem_check(uintptr_t mem_base, unsigned int mem_size,
216 unsigned int flags);
217
218 /*******************************************************************************
219 * Optional BL1 functions (may be overridden)
220 ******************************************************************************/
221 /*
222 * The following functions are used for image loading process in BL1.
223 */
224 void bl1_plat_set_ep_info(unsigned int image_id,
225 struct entry_point_info *ep_info);
226 /*
227 * The following functions are mandatory when firmware update
228 * feature is used and optional otherwise.
229 */
230 unsigned int bl1_plat_get_next_image_id(void);
231 struct image_desc *bl1_plat_get_image_desc(unsigned int image_id);
232
233 /*
234 * The following functions are used by firmware update
235 * feature and may optionally be overridden.
236 */
237 __dead2 void bl1_plat_fwu_done(void *client_cookie, void *reserved);
238
239 /*
240 * This BL1 function can be used by the platforms to update/use image
241 * information for a given `image_id`.
242 */
243 int bl1_plat_handle_pre_image_load(unsigned int image_id);
244 int bl1_plat_handle_post_image_load(unsigned int image_id);
245
246 #if MEASURED_BOOT
247 void bl1_plat_mboot_init(void);
248 void bl1_plat_mboot_finish(void);
249 #else
bl1_plat_mboot_init(void)250 static inline void bl1_plat_mboot_init(void)
251 {
252 }
bl1_plat_mboot_finish(void)253 static inline void bl1_plat_mboot_finish(void)
254 {
255 }
256 #endif /* MEASURED_BOOT */
257
258 /*******************************************************************************
259 * Mandatory BL2 functions
260 ******************************************************************************/
261 void bl2_early_platform_setup2(u_register_t arg0, u_register_t arg1, u_register_t arg2, u_register_t arg3);
262 void bl2_plat_arch_setup(void);
263 void bl2_platform_setup(void);
264 struct meminfo *bl2_plat_sec_mem_layout(void);
265
266 /*
267 * This function can be used by the platforms to update/use image
268 * information for given `image_id`.
269 */
270 int bl2_plat_handle_pre_image_load(unsigned int image_id);
271 int bl2_plat_handle_post_image_load(unsigned int image_id);
272
273 /*******************************************************************************
274 * Optional BL2 functions (may be overridden)
275 ******************************************************************************/
276 #if MEASURED_BOOT
277 void bl2_plat_mboot_init(void);
278 void bl2_plat_mboot_finish(void);
279 #else
bl2_plat_mboot_init(void)280 static inline void bl2_plat_mboot_init(void)
281 {
282 }
bl2_plat_mboot_finish(void)283 static inline void bl2_plat_mboot_finish(void)
284 {
285 }
286 #endif /* MEASURED_BOOT */
287
288 /*******************************************************************************
289 * Mandatory BL2 at EL3 functions: Must be implemented
290 * if RESET_TO_BL2 image is supported
291 ******************************************************************************/
292 void bl2_el3_early_platform_setup(u_register_t arg0, u_register_t arg1,
293 u_register_t arg2, u_register_t arg3);
294 void bl2_el3_plat_arch_setup(void);
295
296 /*******************************************************************************
297 * Optional BL2 at EL3 functions (may be overridden)
298 ******************************************************************************/
299 void bl2_el3_plat_prepare_exit(void);
300
301 /*******************************************************************************
302 * Mandatory BL2U functions.
303 ******************************************************************************/
304 void bl2u_early_platform_setup(struct meminfo *mem_layout,
305 void *plat_info);
306 void bl2u_plat_arch_setup(void);
307 void bl2u_platform_setup(void);
308
309 /*******************************************************************************
310 * Conditionally mandatory BL2U functions for CSS platforms.
311 ******************************************************************************/
312 /*
313 * This function is used to perform any platform-specific actions required to
314 * handle the BL2U_SCP firmware.
315 */
316 int bl2u_plat_handle_scp_bl2u(void);
317
318 /*******************************************************************************
319 * Mandatory BL31 functions
320 ******************************************************************************/
321 void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1,
322 u_register_t arg2, u_register_t arg3);
323 void bl31_plat_arch_setup(void);
324 void bl31_platform_setup(void);
325 void bl31_plat_runtime_setup(void);
326 struct entry_point_info *bl31_plat_get_next_image_ep_info(uint32_t type);
327
328 /*******************************************************************************
329 * Mandatory PSCI functions (BL31)
330 ******************************************************************************/
331 int plat_setup_psci_ops(uintptr_t sec_entrypoint,
332 const struct plat_psci_ops **psci_ops);
333 const unsigned char *plat_get_power_domain_tree_desc(void);
334
335 /*******************************************************************************
336 * Optional PSCI functions (BL31).
337 ******************************************************************************/
338 void plat_psci_stat_accounting_start(const psci_power_state_t *state_info);
339 void plat_psci_stat_accounting_stop(const psci_power_state_t *state_info);
340 u_register_t plat_psci_stat_get_residency(unsigned int lvl,
341 const psci_power_state_t *state_info,
342 unsigned int last_cpu_idx);
343 plat_local_state_t plat_get_target_pwr_state(unsigned int lvl,
344 const plat_local_state_t *states,
345 unsigned int ncpu);
346
347 /*******************************************************************************
348 * Mandatory BL31 functions when ENABLE_RME=1
349 ******************************************************************************/
350 #if ENABLE_RME
351 int plat_rmmd_get_cca_attest_token(uintptr_t buf, size_t *len,
352 uintptr_t hash, size_t hash_size);
353 int plat_rmmd_get_cca_realm_attest_key(uintptr_t buf, size_t *len,
354 unsigned int type);
355 size_t plat_rmmd_get_el3_rmm_shared_mem(uintptr_t *shared);
356 int plat_rmmd_load_manifest(struct rmm_manifest *manifest);
357 #endif
358
359 /*******************************************************************************
360 * Optional BL31 functions (may be overridden)
361 ******************************************************************************/
362 void bl31_plat_enable_mmu(uint32_t flags);
363
364 /*******************************************************************************
365 * Optional BL32 functions (may be overridden)
366 ******************************************************************************/
367 void bl32_plat_enable_mmu(uint32_t flags);
368
369 /*******************************************************************************
370 * Trusted Board Boot functions
371 ******************************************************************************/
372 int plat_get_rotpk_info(void *cookie, void **key_ptr, unsigned int *key_len,
373 unsigned int *flags);
374 int plat_get_nv_ctr(void *cookie, unsigned int *nv_ctr);
375 int plat_set_nv_ctr(void *cookie, unsigned int nv_ctr);
376 int plat_set_nv_ctr2(void *cookie, const struct auth_img_desc_s *img_desc,
377 unsigned int nv_ctr);
378 int get_mbedtls_heap_helper(void **heap_addr, size_t *heap_size);
379 int plat_get_enc_key_info(enum fw_enc_status_t fw_enc_status, uint8_t *key,
380 size_t *key_len, unsigned int *flags,
381 const uint8_t *img_id, size_t img_id_len);
382
383 /*******************************************************************************
384 * Secure Partitions functions
385 ******************************************************************************/
386 const struct mmap_region *plat_get_secure_partition_mmap(void *cookie);
387 const struct spm_mm_boot_info *plat_get_secure_partition_boot_info(
388 void *cookie);
389 int plat_spm_sp_rd_load(struct sp_res_desc *rd, const void *ptr, size_t size);
390 int plat_spm_sp_get_next_address(void **sp_base, size_t *sp_size,
391 void **rd_base, size_t *rd_size);
392 #if defined(SPD_spmd)
393 int plat_spm_core_manifest_load(spmc_manifest_attribute_t *manifest,
394 const void *pm_addr);
395 #endif
396 #if defined(SPMC_AT_EL3)
397 int plat_spmc_shmem_datastore_get(uint8_t **datastore, size_t *size);
398 #endif
399
400 /*******************************************************************************
401 * Mandatory BL image load functions(may be overridden).
402 ******************************************************************************/
403 /*
404 * This function returns pointer to the list of images that the
405 * platform has populated to load.
406 */
407 struct bl_load_info *plat_get_bl_image_load_info(void);
408
409 /*
410 * This function returns a pointer to the shared memory that the
411 * platform has kept aside to pass trusted firmware related
412 * information that next BL image could need.
413 */
414 struct bl_params *plat_get_next_bl_params(void);
415
416 /*
417 * This function flushes to main memory all the params that are
418 * passed to next image.
419 */
420 void plat_flush_next_bl_params(void);
421
422 /*
423 * The below function enable Trusted Firmware components like SPDs which
424 * haven't migrated to the new platform API to compile on platforms which
425 * have the compatibility layer disabled.
426 */
427 unsigned int platform_core_pos_helper(unsigned long mpidr);
428
429 /*
430 * Optional function to get SOC version
431 */
432 int32_t plat_get_soc_version(void);
433
434 /*
435 * Optional function to get SOC revision
436 */
437 int32_t plat_get_soc_revision(void);
438
439 /*
440 * Optional function to check for SMCCC function availability for platform
441 */
442 int32_t plat_is_smccc_feature_available(u_register_t fid);
443
444 /*******************************************************************************
445 * FWU platform specific functions
446 ******************************************************************************/
447 int plat_fwu_set_metadata_image_source(unsigned int image_id,
448 uintptr_t *dev_handle,
449 uintptr_t *image_spec);
450 void plat_fwu_set_images_source(const struct fwu_metadata *metadata);
451 uint32_t plat_fwu_get_boot_idx(void);
452
453 /*
454 * Optional function to indicate if cache management operations can be
455 * performed.
456 */
457 #if CONDITIONAL_CMO
458 uint64_t plat_can_cmo(void);
459 #else
plat_can_cmo(void)460 static inline uint64_t plat_can_cmo(void)
461 {
462 return 1;
463 }
464 #endif /* CONDITIONAL_CMO */
465
466 #endif /* PLATFORM_H */
467
