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Yatharth Kochar71c9a5e2015-10-10 19:06:53 +01001/*
Douglas Raillard21362a92016-12-02 13:51:54 +00002 * Copyright (c) 2015-2017, ARM Limited and Contributors. All rights reserved.
Yatharth Kochar71c9a5e2015-10-10 19:06:53 +01003 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are met:
6 *
7 * Redistributions of source code must retain the above copyright notice, this
8 * list of conditions and the following disclaimer.
9 *
10 * Redistributions in binary form must reproduce the above copyright notice,
11 * this list of conditions and the following disclaimer in the documentation
12 * and/or other materials provided with the distribution.
13 *
14 * Neither the name of ARM nor the names of its contributors may be used
15 * to endorse or promote products derived from this software without specific
16 * prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28 * POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#include <assert.h>
32#include <arch_helpers.h>
33#include <auth_mod.h>
34#include <bl1.h>
35#include <bl_common.h>
36#include <context.h>
37#include <context_mgmt.h>
38#include <debug.h>
39#include <errno.h>
40#include <platform.h>
41#include <platform_def.h>
42#include <smcc_helpers.h>
43#include <string.h>
Sandrine Bailleuxb39d75f2016-11-11 16:44:37 +000044#include <utils.h>
Yatharth Kochar71c9a5e2015-10-10 19:06:53 +010045#include "bl1_private.h"
46
47/*
48 * Function declarations.
49 */
50static int bl1_fwu_image_copy(unsigned int image_id,
51 uintptr_t image_addr,
52 unsigned int block_size,
53 unsigned int image_size,
54 unsigned int flags);
55static int bl1_fwu_image_auth(unsigned int image_id,
56 uintptr_t image_addr,
57 unsigned int image_size,
58 unsigned int flags);
59static int bl1_fwu_image_execute(unsigned int image_id,
60 void **handle,
61 unsigned int flags);
Dan Handley8ec76522015-12-15 10:52:33 +000062static register_t bl1_fwu_image_resume(register_t image_param,
Yatharth Kochar71c9a5e2015-10-10 19:06:53 +010063 void **handle,
64 unsigned int flags);
65static int bl1_fwu_sec_image_done(void **handle,
66 unsigned int flags);
Dan Handley89f8f332015-12-15 14:28:24 +000067__dead2 static void bl1_fwu_done(void *client_cookie, void *reserved);
Yatharth Kochar71c9a5e2015-10-10 19:06:53 +010068
69/*
70 * This keeps track of last executed secure image id.
71 */
72static unsigned int sec_exec_image_id = INVALID_IMAGE_ID;
73
74/*******************************************************************************
75 * Top level handler for servicing FWU SMCs.
76 ******************************************************************************/
77register_t bl1_fwu_smc_handler(unsigned int smc_fid,
78 register_t x1,
79 register_t x2,
80 register_t x3,
81 register_t x4,
82 void *cookie,
83 void *handle,
84 unsigned int flags)
85{
86
87 switch (smc_fid) {
88 case FWU_SMC_IMAGE_COPY:
89 SMC_RET1(handle, bl1_fwu_image_copy(x1, x2, x3, x4, flags));
90
91 case FWU_SMC_IMAGE_AUTH:
92 SMC_RET1(handle, bl1_fwu_image_auth(x1, x2, x3, flags));
93
94 case FWU_SMC_IMAGE_EXECUTE:
95 SMC_RET1(handle, bl1_fwu_image_execute(x1, &handle, flags));
96
97 case FWU_SMC_IMAGE_RESUME:
Dan Handley8ec76522015-12-15 10:52:33 +000098 SMC_RET1(handle, bl1_fwu_image_resume(x1, &handle, flags));
Yatharth Kochar71c9a5e2015-10-10 19:06:53 +010099
100 case FWU_SMC_SEC_IMAGE_DONE:
101 SMC_RET1(handle, bl1_fwu_sec_image_done(&handle, flags));
102
103 case FWU_SMC_UPDATE_DONE:
Dan Handley89f8f332015-12-15 14:28:24 +0000104 bl1_fwu_done((void *)x1, NULL);
Yatharth Kochar71c9a5e2015-10-10 19:06:53 +0100105 /* We should never return from bl1_fwu_done() */
106
107 default:
108 assert(0);
109 break;
110 }
111
112 SMC_RET0(handle);
113}
114
115/*******************************************************************************
116 * This function is responsible for copying secure images in AP Secure RAM.
117 ******************************************************************************/
118static int bl1_fwu_image_copy(unsigned int image_id,
119 uintptr_t image_src,
120 unsigned int block_size,
121 unsigned int image_size,
122 unsigned int flags)
123{
Sandrine Bailleux5ebc21e2016-11-11 15:56:20 +0000124 uintptr_t dest_addr;
Sandrine Bailleux953488e2016-11-14 14:56:51 +0000125 unsigned int remaining;
Yatharth Kochar71c9a5e2015-10-10 19:06:53 +0100126
127 /* Get the image descriptor. */
128 image_desc_t *image_desc = bl1_plat_get_image_desc(image_id);
Sandrine Bailleux5ebc21e2016-11-11 15:56:20 +0000129 if (!image_desc) {
130 WARN("BL1-FWU: Invalid image ID %u\n", image_id);
131 return -EPERM;
132 }
Yatharth Kochar71c9a5e2015-10-10 19:06:53 +0100133
Sandrine Bailleux5ebc21e2016-11-11 15:56:20 +0000134 /*
135 * The request must originate from a non-secure caller and target a
136 * secure image. Any other scenario is invalid.
137 */
138 if (GET_SECURITY_STATE(flags) == SECURE) {
139 WARN("BL1-FWU: Copy not allowed from secure world.\n");
Yatharth Kochar71c9a5e2015-10-10 19:06:53 +0100140 return -EPERM;
141 }
Sandrine Bailleux5ebc21e2016-11-11 15:56:20 +0000142 if (GET_SECURITY_STATE(image_desc->ep_info.h.attr) == NON_SECURE) {
143 WARN("BL1-FWU: Copy not allowed for non-secure images.\n");
144 return -EPERM;
145 }
Yatharth Kochar71c9a5e2015-10-10 19:06:53 +0100146
Sandrine Bailleux5ebc21e2016-11-11 15:56:20 +0000147 /* Check whether the FWU state machine is in the correct state. */
148 if ((image_desc->state != IMAGE_STATE_RESET) &&
149 (image_desc->state != IMAGE_STATE_COPYING)) {
150 WARN("BL1-FWU: Copy not allowed at this point of the FWU"
151 " process.\n");
Yatharth Kochar71c9a5e2015-10-10 19:06:53 +0100152 return -EPERM;
153 }
154
Sandrine Bailleuxb39d75f2016-11-11 16:44:37 +0000155 if ((!image_src) || (!block_size) ||
156 check_uptr_overflow(image_src, block_size - 1)) {
Yatharth Kochar71c9a5e2015-10-10 19:06:53 +0100157 WARN("BL1-FWU: Copy not allowed due to invalid image source"
158 " or block size\n");
159 return -ENOMEM;
160 }
161
Yatharth Kochar71c9a5e2015-10-10 19:06:53 +0100162 if (image_desc->state == IMAGE_STATE_COPYING) {
Sandrine Bailleuxbbc08222016-11-14 14:58:05 +0000163 /*
164 * There must have been at least 1 copy operation for this image
165 * previously.
166 */
167 assert(image_desc->copied_size != 0);
168 /*
169 * The image size must have been recorded in the 1st copy
170 * operation.
171 */
Sandrine Bailleux5ebc21e2016-11-11 15:56:20 +0000172 image_size = image_desc->image_info.image_size;
Sandrine Bailleuxbbc08222016-11-14 14:58:05 +0000173 assert(image_size != 0);
174 assert(image_desc->copied_size < image_size);
175
Yatharth Kochar71c9a5e2015-10-10 19:06:53 +0100176 INFO("BL1-FWU: Continuing image copy in blocks\n");
Sandrine Bailleux5ebc21e2016-11-11 15:56:20 +0000177 } else { /* image_desc->state == IMAGE_STATE_RESET */
178 INFO("BL1-FWU: Initial call to copy an image\n");
Yatharth Kochar71c9a5e2015-10-10 19:06:53 +0100179
Sandrine Bailleux5ebc21e2016-11-11 15:56:20 +0000180 /*
181 * image_size is relevant only for the 1st copy request, it is
182 * then ignored for subsequent calls for this image.
183 */
Yatharth Kochar71c9a5e2015-10-10 19:06:53 +0100184 if (!image_size) {
Sandrine Bailleux5ebc21e2016-11-11 15:56:20 +0000185 WARN("BL1-FWU: Copy not allowed due to invalid image"
186 " size\n");
Yatharth Kochar71c9a5e2015-10-10 19:06:53 +0100187 return -ENOMEM;
188 }
189
Yatharth Kochar8c0177f2016-11-11 13:57:50 +0000190#if LOAD_IMAGE_V2
191 /* Check that the image size to load is within limit */
192 if (image_size > image_desc->image_info.image_max_size) {
193 WARN("BL1-FWU: Image size out of bounds\n");
194 return -ENOMEM;
195 }
196#else
Sandrine Bailleuxb39d75f2016-11-11 16:44:37 +0000197 /*
198 * Check the image will fit into the free trusted RAM after BL1
199 * load.
200 */
Sandrine Bailleux5ebc21e2016-11-11 15:56:20 +0000201 const meminfo_t *mem_layout = bl1_plat_sec_mem_layout();
Sandrine Bailleuxb39d75f2016-11-11 16:44:37 +0000202 if (!is_mem_free(mem_layout->free_base, mem_layout->free_size,
203 image_desc->image_info.image_base,
204 image_size)) {
Sandrine Bailleux5ebc21e2016-11-11 15:56:20 +0000205 WARN("BL1-FWU: Copy not allowed due to insufficient"
206 " resources.\n");
Yatharth Kochar71c9a5e2015-10-10 19:06:53 +0100207 return -ENOMEM;
208 }
Yatharth Kochar8c0177f2016-11-11 13:57:50 +0000209#endif
Yatharth Kochar71c9a5e2015-10-10 19:06:53 +0100210
Sandrine Bailleux5ebc21e2016-11-11 15:56:20 +0000211 /* Save the given image size. */
Yatharth Kochar71c9a5e2015-10-10 19:06:53 +0100212 image_desc->image_info.image_size = image_size;
213
Sandrine Bailleux953488e2016-11-14 14:56:51 +0000214 /*
215 * copied_size must be explicitly initialized here because the
216 * FWU code doesn't necessarily do it when it resets the state
217 * machine.
218 */
219 image_desc->copied_size = 0;
220 }
Yatharth Kochar71c9a5e2015-10-10 19:06:53 +0100221
Sandrine Bailleux953488e2016-11-14 14:56:51 +0000222 /*
223 * If the given block size is more than the total image size
224 * then clip the former to the latter.
225 */
226 remaining = image_size - image_desc->copied_size;
227 if (block_size > remaining) {
228 WARN("BL1-FWU: Block size is too big, clipping it.\n");
229 block_size = remaining;
230 }
Yatharth Kochar71c9a5e2015-10-10 19:06:53 +0100231
Sandrine Bailleux953488e2016-11-14 14:56:51 +0000232 /* Make sure the source image is mapped in memory. */
233 if (bl1_plat_mem_check(image_src, block_size, flags)) {
234 WARN("BL1-FWU: Source image is not mapped.\n");
235 return -ENOMEM;
Yatharth Kochar71c9a5e2015-10-10 19:06:53 +0100236 }
237
Sandrine Bailleux953488e2016-11-14 14:56:51 +0000238 /* Everything looks sane. Go ahead and copy the block of data. */
239 dest_addr = image_desc->image_info.image_base + image_desc->copied_size;
240 memcpy((void *) dest_addr, (const void *) image_src, block_size);
241 flush_dcache_range(dest_addr, block_size);
242
243 image_desc->copied_size += block_size;
244 image_desc->state = (block_size == remaining) ?
245 IMAGE_STATE_COPIED : IMAGE_STATE_COPYING;
246
247 INFO("BL1-FWU: Copy operation successful.\n");
Yatharth Kochar71c9a5e2015-10-10 19:06:53 +0100248 return 0;
249}
250
251/*******************************************************************************
252 * This function is responsible for authenticating Normal/Secure images.
253 ******************************************************************************/
254static int bl1_fwu_image_auth(unsigned int image_id,
255 uintptr_t image_src,
256 unsigned int image_size,
257 unsigned int flags)
258{
259 int result;
260 uintptr_t base_addr;
261 unsigned int total_size;
262
263 /* Get the image descriptor. */
264 image_desc_t *image_desc = bl1_plat_get_image_desc(image_id);
265 if (!image_desc)
266 return -EPERM;
267
Yatharth Kocharf11b29a2016-02-01 11:04:46 +0000268 if (GET_SECURITY_STATE(flags) == SECURE) {
Yatharth Kochar71c9a5e2015-10-10 19:06:53 +0100269 if (image_desc->state != IMAGE_STATE_RESET) {
270 WARN("BL1-FWU: Authentication from secure world "
271 "while in invalid state\n");
272 return -EPERM;
273 }
274 } else {
Yatharth Kocharf11b29a2016-02-01 11:04:46 +0000275 if (GET_SECURITY_STATE(image_desc->ep_info.h.attr) == SECURE) {
Yatharth Kochar71c9a5e2015-10-10 19:06:53 +0100276 if (image_desc->state != IMAGE_STATE_COPIED) {
277 WARN("BL1-FWU: Authentication of secure image "
278 "from non-secure world while not in copied state\n");
279 return -EPERM;
280 }
281 } else {
282 if (image_desc->state != IMAGE_STATE_RESET) {
283 WARN("BL1-FWU: Authentication of non-secure image "
284 "from non-secure world while in invalid state\n");
285 return -EPERM;
286 }
287 }
288 }
289
290 if (image_desc->state == IMAGE_STATE_COPIED) {
291 /*
292 * Image is in COPIED state.
293 * Use the stored address and size.
294 */
295 base_addr = image_desc->image_info.image_base;
296 total_size = image_desc->image_info.image_size;
297 } else {
Sandrine Bailleuxb39d75f2016-11-11 16:44:37 +0000298 if ((!image_src) || (!image_size) ||
299 check_uptr_overflow(image_src, image_size - 1)) {
Yatharth Kochar71c9a5e2015-10-10 19:06:53 +0100300 WARN("BL1-FWU: Auth not allowed due to invalid"
301 " image source/size\n");
302 return -ENOMEM;
303 }
304
305 /*
306 * Image is in RESET state.
307 * Check the parameters and authenticate the source image in place.
308 */
Dan Handley35e5f692015-12-14 16:26:43 +0000309 if (bl1_plat_mem_check(image_src, image_size, \
310 image_desc->ep_info.h.attr)) {
Yatharth Kochar71c9a5e2015-10-10 19:06:53 +0100311 WARN("BL1-FWU: Authentication arguments source/size not mapped\n");
312 return -ENOMEM;
313 }
314
315 base_addr = image_src;
316 total_size = image_size;
317
318 /* Update the image size in the descriptor. */
319 image_desc->image_info.image_size = total_size;
320 }
321
322 /*
323 * Authenticate the image.
324 */
325 INFO("BL1-FWU: Authenticating image_id:%d\n", image_id);
326 result = auth_mod_verify_img(image_id, (void *)base_addr, total_size);
327 if (result != 0) {
328 WARN("BL1-FWU: Authentication Failed err=%d\n", result);
329
330 /*
331 * Authentication has failed.
332 * Clear the memory if the image was copied.
333 * This is to prevent an attack where this contains
334 * some malicious code that can somehow be executed later.
335 */
336 if (image_desc->state == IMAGE_STATE_COPIED) {
337 /* Clear the memory.*/
Douglas Raillard21362a92016-12-02 13:51:54 +0000338 zero_normalmem((void *)base_addr, total_size);
Yatharth Kochar71c9a5e2015-10-10 19:06:53 +0100339 flush_dcache_range(base_addr, total_size);
340
341 /* Indicate that image can be copied again*/
342 image_desc->state = IMAGE_STATE_RESET;
343 }
344 return -EAUTH;
345 }
346
347 /* Indicate that image is in authenticated state. */
348 image_desc->state = IMAGE_STATE_AUTHENTICATED;
349
350 /*
351 * Flush image_info to memory so that other
352 * secure world images can see changes.
353 */
354 flush_dcache_range((unsigned long)&image_desc->image_info,
355 sizeof(image_info_t));
356
357 INFO("BL1-FWU: Authentication was successful\n");
358
359 return 0;
360}
361
362/*******************************************************************************
363 * This function is responsible for executing Secure images.
364 ******************************************************************************/
365static int bl1_fwu_image_execute(unsigned int image_id,
366 void **handle,
367 unsigned int flags)
368{
369 /* Get the image descriptor. */
370 image_desc_t *image_desc = bl1_plat_get_image_desc(image_id);
371
372 /*
373 * Execution is NOT allowed if:
Dan Handley8ec76522015-12-15 10:52:33 +0000374 * image_id is invalid OR
Yatharth Kochar71c9a5e2015-10-10 19:06:53 +0100375 * Caller is from Secure world OR
376 * Image is Non-Secure OR
377 * Image is Non-Executable OR
378 * Image is NOT in AUTHENTICATED state.
379 */
380 if ((!image_desc) ||
Yatharth Kocharf11b29a2016-02-01 11:04:46 +0000381 (GET_SECURITY_STATE(flags) == SECURE) ||
382 (GET_SECURITY_STATE(image_desc->ep_info.h.attr) == NON_SECURE) ||
383 (EP_GET_EXE(image_desc->ep_info.h.attr) == NON_EXECUTABLE) ||
384 (image_desc->state != IMAGE_STATE_AUTHENTICATED)) {
Yatharth Kochar71c9a5e2015-10-10 19:06:53 +0100385 WARN("BL1-FWU: Execution not allowed due to invalid state/args\n");
386 return -EPERM;
387 }
388
389 INFO("BL1-FWU: Executing Secure image\n");
390
391 /* Save NS-EL1 system registers. */
392 cm_el1_sysregs_context_save(NON_SECURE);
393
394 /* Prepare the image for execution. */
395 bl1_prepare_next_image(image_id);
396
397 /* Update the secure image id. */
398 sec_exec_image_id = image_id;
399
400 *handle = cm_get_context(SECURE);
401 return 0;
402}
403
404/*******************************************************************************
Dan Handley8ec76522015-12-15 10:52:33 +0000405 * This function is responsible for resuming execution in the other security
406 * world
Yatharth Kochar71c9a5e2015-10-10 19:06:53 +0100407 ******************************************************************************/
Dan Handley8ec76522015-12-15 10:52:33 +0000408static register_t bl1_fwu_image_resume(register_t image_param,
Yatharth Kochar71c9a5e2015-10-10 19:06:53 +0100409 void **handle,
410 unsigned int flags)
411{
412 image_desc_t *image_desc;
413 unsigned int resume_sec_state;
Yatharth Kocharf11b29a2016-02-01 11:04:46 +0000414 unsigned int caller_sec_state = GET_SECURITY_STATE(flags);
Yatharth Kochar71c9a5e2015-10-10 19:06:53 +0100415
Dan Handley8ec76522015-12-15 10:52:33 +0000416 /* Get the image descriptor for last executed secure image id. */
417 image_desc = bl1_plat_get_image_desc(sec_exec_image_id);
418 if (caller_sec_state == NON_SECURE) {
419 if (!image_desc) {
420 WARN("BL1-FWU: Resume not allowed due to no available"
421 "secure image\n");
Yatharth Kochar71c9a5e2015-10-10 19:06:53 +0100422 return -EPERM;
423 }
Dan Handley8ec76522015-12-15 10:52:33 +0000424 } else {
425 /* image_desc must be valid for secure world callers */
426 assert(image_desc);
427 }
428
Yatharth Kocharf11b29a2016-02-01 11:04:46 +0000429 assert(GET_SECURITY_STATE(image_desc->ep_info.h.attr) == SECURE);
430 assert(EP_GET_EXE(image_desc->ep_info.h.attr) == EXECUTABLE);
Dan Handley8ec76522015-12-15 10:52:33 +0000431
432 if (caller_sec_state == SECURE) {
433 assert(image_desc->state == IMAGE_STATE_EXECUTED);
Yatharth Kochar71c9a5e2015-10-10 19:06:53 +0100434
435 /* Update the flags. */
436 image_desc->state = IMAGE_STATE_INTERRUPTED;
437 resume_sec_state = NON_SECURE;
438 } else {
Dan Handley8ec76522015-12-15 10:52:33 +0000439 assert(image_desc->state == IMAGE_STATE_INTERRUPTED);
Yatharth Kochar71c9a5e2015-10-10 19:06:53 +0100440
441 /* Update the flags. */
442 image_desc->state = IMAGE_STATE_EXECUTED;
443 resume_sec_state = SECURE;
444 }
445
446 /* Save the EL1 system registers of calling world. */
Dan Handley8ec76522015-12-15 10:52:33 +0000447 cm_el1_sysregs_context_save(caller_sec_state);
Yatharth Kochar71c9a5e2015-10-10 19:06:53 +0100448
449 /* Restore the EL1 system registers of resuming world. */
450 cm_el1_sysregs_context_restore(resume_sec_state);
451
452 /* Update the next context. */
453 cm_set_next_eret_context(resume_sec_state);
454
455 INFO("BL1-FWU: Resuming %s world context\n",
Dan Handley8ec76522015-12-15 10:52:33 +0000456 (resume_sec_state == SECURE) ? "secure" : "normal");
Yatharth Kochar71c9a5e2015-10-10 19:06:53 +0100457
458 *handle = cm_get_context(resume_sec_state);
459 return image_param;
460}
461
462/*******************************************************************************
463 * This function is responsible for resuming normal world context.
464 ******************************************************************************/
465static int bl1_fwu_sec_image_done(void **handle, unsigned int flags)
466{
Dan Handley8ec76522015-12-15 10:52:33 +0000467 image_desc_t *image_desc;
Yatharth Kochar71c9a5e2015-10-10 19:06:53 +0100468
Dan Handley8ec76522015-12-15 10:52:33 +0000469 /* Make sure caller is from the secure world */
Yatharth Kocharf11b29a2016-02-01 11:04:46 +0000470 if (GET_SECURITY_STATE(flags) == NON_SECURE) {
Dan Handley8ec76522015-12-15 10:52:33 +0000471 WARN("BL1-FWU: Image done not allowed from normal world\n");
Yatharth Kochar71c9a5e2015-10-10 19:06:53 +0100472 return -EPERM;
473 }
474
Dan Handley8ec76522015-12-15 10:52:33 +0000475 /* Get the image descriptor for last executed secure image id */
476 image_desc = bl1_plat_get_image_desc(sec_exec_image_id);
477
478 /* image_desc must correspond to a valid secure executing image */
479 assert(image_desc);
Yatharth Kocharf11b29a2016-02-01 11:04:46 +0000480 assert(GET_SECURITY_STATE(image_desc->ep_info.h.attr) == SECURE);
481 assert(EP_GET_EXE(image_desc->ep_info.h.attr) == EXECUTABLE);
Dan Handley8ec76522015-12-15 10:52:33 +0000482 assert(image_desc->state == IMAGE_STATE_EXECUTED);
483
Yatharth Kochar71c9a5e2015-10-10 19:06:53 +0100484 /* Update the flags. */
485 image_desc->state = IMAGE_STATE_RESET;
486 sec_exec_image_id = INVALID_IMAGE_ID;
487
488 /*
489 * Secure world is done so no need to save the context.
490 * Just restore the Non-Secure context.
491 */
492 cm_el1_sysregs_context_restore(NON_SECURE);
493
494 /* Update the next context. */
495 cm_set_next_eret_context(NON_SECURE);
496
497 INFO("BL1-FWU: Resuming Normal world context\n");
498
499 *handle = cm_get_context(NON_SECURE);
500 return 0;
501}
502
503/*******************************************************************************
504 * This function provides the opportunity for users to perform any
505 * platform specific handling after the Firmware update is done.
506 ******************************************************************************/
Dan Handley89f8f332015-12-15 14:28:24 +0000507__dead2 static void bl1_fwu_done(void *client_cookie, void *reserved)
Yatharth Kochar71c9a5e2015-10-10 19:06:53 +0100508{
509 NOTICE("BL1-FWU: *******FWU Process Completed*******\n");
510
511 /*
512 * Call platform done function.
513 */
Dan Handley89f8f332015-12-15 14:28:24 +0000514 bl1_plat_fwu_done(client_cookie, reserved);
Yatharth Kochar71c9a5e2015-10-10 19:06:53 +0100515 assert(0);
516}