blob: da6231ae6590f442e1a5d84f31bd1ab7c74177f0 [file] [log] [blame]
Aaron Durbin588ad7b2015-09-29 17:56:59 -05001/*
2 * This file is part of the coreboot project.
3 *
4 * Copyright 2014 Google Inc.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; version 2 of the License.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
Aaron Durbin588ad7b2015-09-29 17:56:59 -050014 */
15
Aaron Durbin588ad7b2015-09-29 17:56:59 -050016#include <arch/exception.h>
17#include <assert.h>
Furquan Shaikh2a12e2e2016-07-25 11:48:03 -070018#include <bootmode.h>
Joel Kitching532e0c72019-06-16 17:23:03 +080019#include <cbmem.h>
Aaron Durbin588ad7b2015-09-29 17:56:59 -050020#include <console/console.h>
21#include <console/vtxprintf.h>
Aaron Durbin588ad7b2015-09-29 17:56:59 -050022#include <string.h>
23#include <timestamp.h>
24#include <vb2_api.h>
Philipp Deppenwiesefea24292017-10-17 17:02:29 +020025#include <security/vboot/misc.h>
26#include <security/vboot/vbnv.h>
Philipp Deppenwiese66f9a092018-11-08 10:59:40 +010027#include <security/vboot/vboot_crtm.h>
Christian Walter0bd84ed2019-07-23 10:26:30 +020028#include <security/vboot/tpm_common.h>
Aaron Durbin588ad7b2015-09-29 17:56:59 -050029
Philipp Deppenwiesec07f8fb2018-02-27 19:40:52 +010030#include "antirollback.h"
31
Aaron Durbin87c9fae2016-01-22 15:26:04 -060032/* The max hash size to expect is for SHA512. */
33#define VBOOT_MAX_HASH_SIZE VB2_SHA512_DIGEST_SIZE
34
Aaron Durbin588ad7b2015-09-29 17:56:59 -050035#define TODO_BLOCK_SIZE 1024
36
37static int is_slot_a(struct vb2_context *ctx)
38{
39 return !(ctx->flags & VB2_CONTEXT_FW_SLOT_B);
40}
41
42/* exports */
43
44void vb2ex_printf(const char *func, const char *fmt, ...)
45{
46 va_list args;
47
Randall Spanglere80c6f62017-01-20 14:48:53 -080048 if (func)
49 printk(BIOS_INFO, "VB2:%s() ", func);
50
Aaron Durbin588ad7b2015-09-29 17:56:59 -050051 va_start(args, fmt);
Kyösti Mälkki7132f252019-02-14 23:08:29 +020052 vprintk(BIOS_INFO, fmt, args);
Aaron Durbin588ad7b2015-09-29 17:56:59 -050053 va_end(args);
54
55 return;
56}
57
Joel Kitching220ac042019-07-31 14:19:00 +080058vb2_error_t vb2ex_read_resource(struct vb2_context *ctx,
59 enum vb2_resource_index index,
60 uint32_t offset,
61 void *buf,
62 uint32_t size)
Aaron Durbin588ad7b2015-09-29 17:56:59 -050063{
64 struct region_device rdev;
65 const char *name;
66
67 switch (index) {
68 case VB2_RES_GBB:
69 name = "GBB";
70 break;
71 case VB2_RES_FW_VBLOCK:
72 if (is_slot_a(ctx))
73 name = "VBLOCK_A";
74 else
75 name = "VBLOCK_B";
76 break;
77 default:
78 return VB2_ERROR_EX_READ_RESOURCE_INDEX;
79 }
80
81 if (vboot_named_region_device(name, &rdev))
82 return VB2_ERROR_EX_READ_RESOURCE_SIZE;
83
84 if (rdev_readat(&rdev, buf, offset, size) != size)
85 return VB2_ERROR_EX_READ_RESOURCE_SIZE;
86
87 return VB2_SUCCESS;
88}
89
Joel Kitchingf3507682019-10-15 01:04:35 +080090void vb2ex_abort(void)
91{
92 die("vboot has aborted execution; exit\n");
93}
94
Aaron Durbin588ad7b2015-09-29 17:56:59 -050095/* No-op stubs that can be overridden by SoCs with hardware crypto support. */
Joel Kitching220ac042019-07-31 14:19:00 +080096__weak vb2_error_t vb2ex_hwcrypto_digest_init(enum vb2_hash_algorithm hash_alg,
97 uint32_t data_size)
Aaron Durbin588ad7b2015-09-29 17:56:59 -050098{
99 return VB2_ERROR_EX_HWCRYPTO_UNSUPPORTED;
100}
101
Joel Kitching220ac042019-07-31 14:19:00 +0800102__weak vb2_error_t vb2ex_hwcrypto_digest_extend(const uint8_t *buf,
103 uint32_t size)
Aaron Durbin588ad7b2015-09-29 17:56:59 -0500104{
Philipp Deppenwiese66f9a092018-11-08 10:59:40 +0100105 BUG(); /* Should never get called if init() returned an error. */
Aaron Durbin588ad7b2015-09-29 17:56:59 -0500106 return VB2_ERROR_UNKNOWN;
107}
108
Joel Kitching220ac042019-07-31 14:19:00 +0800109__weak vb2_error_t vb2ex_hwcrypto_digest_finalize(uint8_t *digest,
110 uint32_t digest_size)
Aaron Durbin588ad7b2015-09-29 17:56:59 -0500111{
Philipp Deppenwiese66f9a092018-11-08 10:59:40 +0100112 BUG(); /* Should never get called if init() returned an error. */
Aaron Durbin588ad7b2015-09-29 17:56:59 -0500113 return VB2_ERROR_UNKNOWN;
114}
115
Aaron Durbin87c9fae2016-01-22 15:26:04 -0600116static int handle_digest_result(void *slot_hash, size_t slot_hash_sz)
117{
118 int is_resume;
119
120 /*
Naresh G Solanki1d04d162016-11-08 00:27:41 +0530121 * Chrome EC is the only support for vboot_save_hash() &
122 * vboot_retrieve_hash(), if Chrome EC is not enabled then return.
Naresh G Solanki3d44d692016-11-06 12:51:14 +0530123 */
Julius Wernercd49cce2019-03-05 16:53:33 -0800124 if (!CONFIG(EC_GOOGLE_CHROMEEC))
Naresh G Solanki3d44d692016-11-06 12:51:14 +0530125 return 0;
126
127 /*
Aaron Durbin87c9fae2016-01-22 15:26:04 -0600128 * Nothing to do since resuming on the platform doesn't require
129 * vboot verification again.
130 */
Julius Wernercd49cce2019-03-05 16:53:33 -0800131 if (!CONFIG(RESUME_PATH_SAME_AS_BOOT))
Aaron Durbin87c9fae2016-01-22 15:26:04 -0600132 return 0;
133
134 /*
135 * Assume that if vboot doesn't start in bootblock verified
136 * RW memory init code is not employed. i.e. memory init code
137 * lives in RO CBFS.
138 */
Julius Wernercd49cce2019-03-05 16:53:33 -0800139 if (!CONFIG(VBOOT_STARTS_IN_BOOTBLOCK))
Aaron Durbin87c9fae2016-01-22 15:26:04 -0600140 return 0;
141
142 is_resume = vboot_platform_is_resuming();
143
144 if (is_resume > 0) {
145 uint8_t saved_hash[VBOOT_MAX_HASH_SIZE];
146 const size_t saved_hash_sz = sizeof(saved_hash);
147
148 assert(slot_hash_sz == saved_hash_sz);
149
150 printk(BIOS_DEBUG, "Platform is resuming.\n");
151
152 if (vboot_retrieve_hash(saved_hash, saved_hash_sz)) {
153 printk(BIOS_ERR, "Couldn't retrieve saved hash.\n");
154 return -1;
155 }
156
157 if (memcmp(saved_hash, slot_hash, slot_hash_sz)) {
158 printk(BIOS_ERR, "Hash mismatch on resume.\n");
159 return -1;
160 }
161 } else if (is_resume < 0)
162 printk(BIOS_ERR, "Unable to determine if platform resuming.\n");
163
164 printk(BIOS_DEBUG, "Saving vboot hash.\n");
165
166 /* Always save the hash for the current boot. */
167 if (vboot_save_hash(slot_hash, slot_hash_sz)) {
168 printk(BIOS_ERR, "Error saving vboot hash.\n");
169 /* Though this is an error don't report it up since it could
170 * lead to a reboot loop. The consequence of this is that
171 * we will most likely fail resuming because of EC issues or
172 * the hash digest not matching. */
173 return 0;
174 }
175
176 return 0;
177}
178
Joel Kitching220ac042019-07-31 14:19:00 +0800179static vb2_error_t hash_body(struct vb2_context *ctx,
180 struct region_device *fw_main)
Aaron Durbin588ad7b2015-09-29 17:56:59 -0500181{
182 uint64_t load_ts;
183 uint32_t expected_size;
184 uint8_t block[TODO_BLOCK_SIZE];
Aaron Durbin87c9fae2016-01-22 15:26:04 -0600185 uint8_t hash_digest[VBOOT_MAX_HASH_SIZE];
186 const size_t hash_digest_sz = sizeof(hash_digest);
Aaron Durbin588ad7b2015-09-29 17:56:59 -0500187 size_t block_size = sizeof(block);
188 size_t offset;
Joel Kitching220ac042019-07-31 14:19:00 +0800189 vb2_error_t rv;
Aaron Durbin588ad7b2015-09-29 17:56:59 -0500190
Aaron Durbin87c9fae2016-01-22 15:26:04 -0600191 /* Clear the full digest so that any hash digests less than the
192 * max have trailing zeros. */
193 memset(hash_digest, 0, hash_digest_sz);
194
Aaron Durbin588ad7b2015-09-29 17:56:59 -0500195 /*
196 * Since loading the firmware and calculating its hash is intertwined,
197 * we use this little trick to measure them separately and pretend it
198 * was first loaded and then hashed in one piece with the timestamps.
199 * (This split won't make sense with memory-mapped media like on x86.)
200 */
201 load_ts = timestamp_get();
202 timestamp_add(TS_START_HASH_BODY, load_ts);
203
204 expected_size = region_device_sz(fw_main);
205 offset = 0;
206
207 /* Start the body hash */
208 rv = vb2api_init_hash(ctx, VB2_HASH_TAG_FW_BODY, &expected_size);
209 if (rv)
210 return rv;
211
Aaron Durbin4121f9e2016-01-27 14:23:17 -0600212 /*
213 * Honor vboot's RW slot size. The expected size is pulled out of
214 * the preamble and obtained through vb2api_init_hash() above. By
215 * creating sub region the RW slot portion of the boot media is
216 * limited.
217 */
218 if (rdev_chain(fw_main, fw_main, 0, expected_size)) {
219 printk(BIOS_ERR, "Unable to restrict CBFS size.\n");
220 return VB2_ERROR_UNKNOWN;
221 }
222
Aaron Durbin588ad7b2015-09-29 17:56:59 -0500223 /* Extend over the body */
224 while (expected_size) {
225 uint64_t temp_ts;
226 if (block_size > expected_size)
227 block_size = expected_size;
228
229 temp_ts = timestamp_get();
230 if (rdev_readat(fw_main, block, offset, block_size) < 0)
231 return VB2_ERROR_UNKNOWN;
232 load_ts += timestamp_get() - temp_ts;
233
234 rv = vb2api_extend_hash(ctx, block, block_size);
235 if (rv)
236 return rv;
237
238 expected_size -= block_size;
239 offset += block_size;
240 }
241
242 timestamp_add(TS_DONE_LOADING, load_ts);
243 timestamp_add_now(TS_DONE_HASHING);
244
245 /* Check the result (with RSA signature verification) */
Aaron Durbin87c9fae2016-01-22 15:26:04 -0600246 rv = vb2api_check_hash_get_digest(ctx, hash_digest, hash_digest_sz);
Aaron Durbin588ad7b2015-09-29 17:56:59 -0500247 if (rv)
248 return rv;
249
250 timestamp_add_now(TS_END_HASH_BODY);
251
Aaron Durbin87c9fae2016-01-22 15:26:04 -0600252 if (handle_digest_result(hash_digest, hash_digest_sz))
253 return VB2_ERROR_UNKNOWN;
254
Aaron Durbin588ad7b2015-09-29 17:56:59 -0500255 return VB2_SUCCESS;
256}
257
258static int locate_firmware(struct vb2_context *ctx,
Philipp Deppenwiese66f9a092018-11-08 10:59:40 +0100259 struct region_device *fw_main)
Aaron Durbin588ad7b2015-09-29 17:56:59 -0500260{
261 const char *name;
262
263 if (is_slot_a(ctx))
264 name = "FW_MAIN_A";
265 else
266 name = "FW_MAIN_B";
267
268 return vboot_named_region_device(name, fw_main);
269}
270
271/**
272 * Save non-volatile and/or secure data if needed.
273 */
274static void save_if_needed(struct vb2_context *ctx)
275{
276 if (ctx->flags & VB2_CONTEXT_NVDATA_CHANGED) {
277 printk(BIOS_INFO, "Saving nvdata\n");
278 save_vbnv(ctx->nvdata);
279 ctx->flags &= ~VB2_CONTEXT_NVDATA_CHANGED;
280 }
281 if (ctx->flags & VB2_CONTEXT_SECDATA_CHANGED) {
282 printk(BIOS_INFO, "Saving secdata\n");
283 antirollback_write_space_firmware(ctx);
284 ctx->flags &= ~VB2_CONTEXT_SECDATA_CHANGED;
285 }
286}
287
288static uint32_t extend_pcrs(struct vb2_context *ctx)
289{
Philipp Deppenwiesec07f8fb2018-02-27 19:40:52 +0100290 return vboot_extend_pcr(ctx, 0, BOOT_MODE_PCR) ||
Philipp Deppenwiese66f9a092018-11-08 10:59:40 +0100291 vboot_extend_pcr(ctx, 1, HWID_DIGEST_PCR);
Aaron Durbin588ad7b2015-09-29 17:56:59 -0500292}
293
Joel Kitching532e0c72019-06-16 17:23:03 +0800294static void vboot_log_and_clear_recovery_mode_switch(int unused)
295{
296 /* Log the recovery mode switches if required, before clearing them. */
297 log_recovery_mode_switch();
298
299 /*
300 * The recovery mode switch is cleared (typically backed by EC) here
301 * to allow multiple queries to get_recovery_mode_switch() and have
302 * them return consistent results during the verified boot path as well
303 * as dram initialization. x86 systems ignore the saved dram settings
304 * in the recovery path in order to start from a clean slate. Therefore
305 * clear the state here since this function is called when memory
306 * is known to be up.
307 */
308 clear_recovery_mode_switch();
309}
310#if !CONFIG(VBOOT_STARTS_IN_ROMSTAGE)
311ROMSTAGE_CBMEM_INIT_HOOK(vboot_log_and_clear_recovery_mode_switch)
312#endif
313
Aaron Durbin588ad7b2015-09-29 17:56:59 -0500314/**
315 * Verify and select the firmware in the RW image
316 *
317 * TODO: Avoid loading a stage twice (once in hash_body & again in load_stage).
318 * when per-stage verification is ready.
319 */
320void verstage_main(void)
321{
322 struct vb2_context ctx;
323 struct region_device fw_main;
Joel Kitching220ac042019-07-31 14:19:00 +0800324 vb2_error_t rv;
Aaron Durbinb5a20b22015-10-06 17:29:03 -0500325
Aaron Durbin588ad7b2015-09-29 17:56:59 -0500326 timestamp_add_now(TS_START_VBOOT);
327
328 /* Set up context and work buffer */
Joel Kitchingaf8471c2019-03-13 22:38:07 +0800329 vboot_init_work_context(&ctx);
Aaron Durbin588ad7b2015-09-29 17:56:59 -0500330
Aaron Durbin118a84f2017-09-15 11:15:07 -0600331 /* Initialize and read nvdata from non-volatile storage. */
332 vbnv_init(ctx.nvdata);
Aaron Durbin588ad7b2015-09-29 17:56:59 -0500333
Duncan Laurie1cdacca2016-02-19 20:26:07 -0800334 /* Set S3 resume flag if vboot should behave differently when selecting
335 * which slot to boot. This is only relevant to vboot if the platform
336 * does verification of memory init and thus must ensure it resumes with
337 * the same slot that it booted from. */
Julius Wernercd49cce2019-03-05 16:53:33 -0800338 if (CONFIG(RESUME_PATH_SAME_AS_BOOT) &&
Philipp Deppenwiese66f9a092018-11-08 10:59:40 +0100339 vboot_platform_is_resuming())
Duncan Laurie1cdacca2016-02-19 20:26:07 -0800340 ctx.flags |= VB2_CONTEXT_S3_RESUME;
341
Duncan Lauriea613a312016-03-14 09:32:08 -0700342 /* Read secdata from TPM. Initialize TPM if secdata not found. We don't
343 * check the return value here because vb2api_fw_phase1 will catch
344 * invalid secdata and tell us what to do (=reboot). */
345 timestamp_add_now(TS_START_TPMINIT);
Joel Kitching2a20d132019-08-08 14:20:26 +0800346 if (vboot_setup_tpm(&ctx) == TPM_SUCCESS)
Christian Walter0bd84ed2019-07-23 10:26:30 +0200347 antirollback_read_space_firmware(&ctx);
Duncan Lauriea613a312016-03-14 09:32:08 -0700348 timestamp_add_now(TS_END_TPMINIT);
349
Philipp Deppenwiese66f9a092018-11-08 10:59:40 +0100350 /* Enable measured boot mode */
Julius Wernercd49cce2019-03-05 16:53:33 -0800351 if (CONFIG(VBOOT_MEASURED_BOOT) &&
Philipp Deppenwiese66f9a092018-11-08 10:59:40 +0100352 !(ctx.flags & VB2_CONTEXT_S3_RESUME)) {
353 if (vboot_init_crtm() != VB2_SUCCESS)
Keith Short70064582019-05-06 16:12:57 -0600354 die_with_post_code(POST_INVALID_ROM,
355 "Initializing measured boot mode failed!");
Philipp Deppenwiese66f9a092018-11-08 10:59:40 +0100356 }
357
Aaron Durbin588ad7b2015-09-29 17:56:59 -0500358 if (get_recovery_mode_switch()) {
Aaron Durbin588ad7b2015-09-29 17:56:59 -0500359 ctx.flags |= VB2_CONTEXT_FORCE_RECOVERY_MODE;
Julius Wernercd49cce2019-03-05 16:53:33 -0800360 if (CONFIG(VBOOT_DISABLE_DEV_ON_RECOVERY))
Joel Kitchingba5ae5b2019-01-11 19:30:42 +0800361 ctx.flags |= VB2_CONTEXT_DISABLE_DEVELOPER_MODE;
Aaron Durbin588ad7b2015-09-29 17:56:59 -0500362 }
363
Julius Wernercd49cce2019-03-05 16:53:33 -0800364 if (CONFIG(VBOOT_WIPEOUT_SUPPORTED) &&
Philipp Deppenwiese66f9a092018-11-08 10:59:40 +0100365 get_wipeout_mode_switch())
Aaron Durbin588ad7b2015-09-29 17:56:59 -0500366 ctx.flags |= VB2_CONTEXT_FORCE_WIPEOUT_MODE;
367
Julius Wernercd49cce2019-03-05 16:53:33 -0800368 if (CONFIG(VBOOT_LID_SWITCH) && !get_lid_switch())
Aaron Durbin588ad7b2015-09-29 17:56:59 -0500369 ctx.flags |= VB2_CONTEXT_NOFAIL_BOOT;
370
Joel Kitching5923d672019-04-12 15:57:43 +0800371 /* Mainboard/SoC always initializes display. */
372 if (!CONFIG(VBOOT_MUST_REQUEST_DISPLAY))
373 ctx.flags |= VB2_CONTEXT_DISPLAY_INIT;
374
Aaron Durbin588ad7b2015-09-29 17:56:59 -0500375 /* Do early init (set up secdata and NVRAM, load GBB) */
376 printk(BIOS_INFO, "Phase 1\n");
377 rv = vb2api_fw_phase1(&ctx);
378
Eric Laib6ee0562019-05-21 16:55:14 +0800379 /* Jot down some information from vboot which may be required later on
380 in coreboot boot flow. */
381 if (ctx.flags & VB2_CONTEXT_DISPLAY_INIT)
382 /* Mainboard/SoC should initialize display. */
383 vboot_get_working_data()->flags |= VBOOT_WD_FLAG_DISPLAY_INIT;
384 if (ctx.flags & VB2_CONTEXT_DEVELOPER_MODE)
385 vboot_get_working_data()->flags |= VBOOT_WD_FLAG_DEVELOPER_MODE;
386
Aaron Durbin588ad7b2015-09-29 17:56:59 -0500387 if (rv) {
388 /*
389 * If vb2api_fw_phase1 fails, check for return value.
390 * If it is set to VB2_ERROR_API_PHASE1_RECOVERY, then continue
391 * into recovery mode.
392 * For any other error code, save context if needed and reboot.
393 */
394 if (rv == VB2_ERROR_API_PHASE1_RECOVERY) {
395 printk(BIOS_INFO, "Recovery requested (%x)\n", rv);
396 save_if_needed(&ctx);
Philipp Deppenwiese66f9a092018-11-08 10:59:40 +0100397 extend_pcrs(&ctx); /* ignore failures */
Joel Kitchingba50e482019-06-10 17:37:37 +0800398 goto verstage_main_exit;
Aaron Durbin588ad7b2015-09-29 17:56:59 -0500399 }
400
Raul E Rangel3a591742018-07-17 14:44:43 -0600401 printk(BIOS_INFO, "Reboot requested (%x)\n", rv);
Aaron Durbin588ad7b2015-09-29 17:56:59 -0500402 save_if_needed(&ctx);
403 vboot_reboot();
404 }
405
406 /* Determine which firmware slot to boot (based on NVRAM) */
407 printk(BIOS_INFO, "Phase 2\n");
408 rv = vb2api_fw_phase2(&ctx);
409 if (rv) {
410 printk(BIOS_INFO, "Reboot requested (%x)\n", rv);
411 save_if_needed(&ctx);
412 vboot_reboot();
413 }
414
415 /* Try that slot (verify its keyblock and preamble) */
416 printk(BIOS_INFO, "Phase 3\n");
417 timestamp_add_now(TS_START_VERIFY_SLOT);
418 rv = vb2api_fw_phase3(&ctx);
419 timestamp_add_now(TS_END_VERIFY_SLOT);
420 if (rv) {
421 printk(BIOS_INFO, "Reboot requested (%x)\n", rv);
422 save_if_needed(&ctx);
423 vboot_reboot();
424 }
425
426 printk(BIOS_INFO, "Phase 4\n");
427 rv = locate_firmware(&ctx, &fw_main);
428 if (rv)
Keith Short70064582019-05-06 16:12:57 -0600429 die_with_post_code(POST_INVALID_ROM,
430 "Failed to read FMAP to locate firmware");
Aaron Durbin588ad7b2015-09-29 17:56:59 -0500431
432 rv = hash_body(&ctx, &fw_main);
433 save_if_needed(&ctx);
434 if (rv) {
435 printk(BIOS_INFO, "Reboot requested (%x)\n", rv);
436 vboot_reboot();
437 }
438
Joel Kitching6d88a5d2018-10-12 15:23:31 +0800439 /* Only extend PCRs once on boot. */
440 if (!(ctx.flags & VB2_CONTEXT_S3_RESUME)) {
441 timestamp_add_now(TS_START_TPMPCR);
442 rv = extend_pcrs(&ctx);
443 if (rv) {
444 printk(BIOS_WARNING,
445 "Failed to extend TPM PCRs (%#x)\n", rv);
446 vb2api_fail(&ctx, VB2_RECOVERY_RO_TPM_U_ERROR, rv);
447 save_if_needed(&ctx);
448 vboot_reboot();
449 }
450 timestamp_add_now(TS_END_TPMPCR);
Aaron Durbin588ad7b2015-09-29 17:56:59 -0500451 }
452
453 /* Lock TPM */
Raul E Rangel4c518e12018-05-11 11:08:07 -0600454
455 timestamp_add_now(TS_START_TPMLOCK);
Aaron Durbin588ad7b2015-09-29 17:56:59 -0500456 rv = antirollback_lock_space_firmware();
457 if (rv) {
458 printk(BIOS_INFO, "Failed to lock TPM (%x)\n", rv);
459 vb2api_fail(&ctx, VB2_RECOVERY_RO_TPM_L_ERROR, 0);
460 save_if_needed(&ctx);
461 vboot_reboot();
462 }
Raul E Rangel4c518e12018-05-11 11:08:07 -0600463 timestamp_add_now(TS_END_TPMLOCK);
Aaron Durbin588ad7b2015-09-29 17:56:59 -0500464
Furquan Shaikhb038f412016-11-07 23:47:11 -0800465 /* Lock rec hash space if available. */
Julius Wernercd49cce2019-03-05 16:53:33 -0800466 if (CONFIG(VBOOT_HAS_REC_HASH_SPACE)) {
Furquan Shaikhb038f412016-11-07 23:47:11 -0800467 rv = antirollback_lock_space_rec_hash();
468 if (rv) {
469 printk(BIOS_INFO, "Failed to lock rec hash space(%x)\n",
470 rv);
471 vb2api_fail(&ctx, VB2_RECOVERY_RO_TPM_REC_HASH_L_ERROR,
472 0);
473 save_if_needed(&ctx);
474 vboot_reboot();
475 }
476 }
477
Aaron Durbin588ad7b2015-09-29 17:56:59 -0500478 printk(BIOS_INFO, "Slot %c is selected\n", is_slot_a(&ctx) ? 'A' : 'B');
Joel Kitchingaf8471c2019-03-13 22:38:07 +0800479 vboot_set_selected_region(region_device_region(&fw_main));
Joel Kitchingba50e482019-06-10 17:37:37 +0800480
481 verstage_main_exit:
Joel Kitching532e0c72019-06-16 17:23:03 +0800482 /* If CBMEM is not up yet, let the ROMSTAGE_CBMEM_INIT_HOOK take care
483 of running this function. */
484 if (ENV_ROMSTAGE && CONFIG(VBOOT_STARTS_IN_ROMSTAGE))
485 vboot_log_and_clear_recovery_mode_switch(0);
486
Joel Kitching7b10deb2019-06-17 15:22:28 +0800487 /* Save recovery reason in case of unexpected reboots on x86. */
488 vboot_save_recovery_reason_vbnv();
489
Joel Kitchingaf8471c2019-03-13 22:38:07 +0800490 vboot_finalize_work_context(&ctx);
Aaron Durbin588ad7b2015-09-29 17:56:59 -0500491 timestamp_add_now(TS_END_VBOOT);
492}