1 /*
2 * Copyright (C) 2016 The Android Open Source Project
3 *
4 * SPDX-License-Identifier: BSD-2-Clause
5 */
6
7 #include <android_bootloader.h>
8 #include <android_bootloader_message.h>
9 #include <android_avb/avb_slot_verify.h>
10 #include <android_avb/avb_ops_user.h>
11 #include <android_avb/rk_avb_ops_user.h>
12 #include <android_image.h>
13 #include <android_ab.h>
14 #include <bootm.h>
15 #include <asm/arch/hotkey.h>
16 #include <cli.h>
17 #include <common.h>
18 #include <dt_table.h>
19 #include <image-android-dt.h>
20 #include <malloc.h>
21 #include <mp_boot.h>
22 #include <fdt_support.h>
23 #include <fs.h>
24 #include <boot_rkimg.h>
25 #include <attestation_key.h>
26 #include <keymaster.h>
27 #include <linux/libfdt_env.h>
28 #include <optee_include/OpteeClientInterface.h>
29 #include <bidram.h>
30 #include <console.h>
31 #include <sysmem.h>
32
33 DECLARE_GLOBAL_DATA_PTR;
34
android_bootloader_message_load(struct blk_desc * dev_desc,const disk_partition_t * part_info,struct android_bootloader_message * message)35 int android_bootloader_message_load(
36 struct blk_desc *dev_desc,
37 const disk_partition_t *part_info,
38 struct android_bootloader_message *message)
39 {
40 ulong message_blocks = sizeof(struct android_bootloader_message) /
41 part_info->blksz;
42 if (message_blocks > part_info->size) {
43 printf("misc partition too small.\n");
44 return -1;
45 }
46
47 if (blk_dread(dev_desc, part_info->start + android_bcb_msg_sector_offset(),
48 message_blocks, message) !=
49 message_blocks) {
50 printf("Could not read from misc partition\n");
51 return -1;
52 }
53 debug("ANDROID: Loaded BCB, %lu blocks.\n", message_blocks);
54 return 0;
55 }
56
android_bootloader_message_write(struct blk_desc * dev_desc,const disk_partition_t * part_info,struct android_bootloader_message * message)57 static int android_bootloader_message_write(
58 struct blk_desc *dev_desc,
59 const disk_partition_t *part_info,
60 struct android_bootloader_message *message)
61 {
62 ulong message_blocks = sizeof(struct android_bootloader_message) /
63 part_info->blksz + android_bcb_msg_sector_offset();
64
65 if (message_blocks > part_info->size) {
66 printf("misc partition too small.\n");
67 return -1;
68 }
69
70 if (blk_dwrite(dev_desc, part_info->start, message_blocks, message) !=
71 message_blocks) {
72 printf("Could not write to misc partition\n");
73 return -1;
74 }
75 debug("ANDROID: Wrote new BCB, %lu blocks.\n", message_blocks);
76 return 0;
77 }
78
android_bootloader_load_and_clear_mode(struct blk_desc * dev_desc,const disk_partition_t * misc_part_info)79 static enum android_boot_mode android_bootloader_load_and_clear_mode(
80 struct blk_desc *dev_desc,
81 const disk_partition_t *misc_part_info)
82 {
83 struct android_bootloader_message bcb;
84
85 #ifdef CONFIG_FASTBOOT
86 char *bootloader_str;
87
88 /* Check for message from bootloader stored in RAM from a previous boot.
89 */
90 bootloader_str = (char *)CONFIG_FASTBOOT_BUF_ADDR;
91 if (!strcmp("reboot-bootloader", bootloader_str)) {
92 bootloader_str[0] = '\0';
93 return ANDROID_BOOT_MODE_BOOTLOADER;
94 }
95 #endif
96
97 /* Check and update the BCB message if needed. */
98 if (android_bootloader_message_load(dev_desc, misc_part_info, &bcb) <
99 0) {
100 printf("WARNING: Unable to load the BCB.\n");
101 return ANDROID_BOOT_MODE_NORMAL;
102 }
103
104 if (!strcmp("bootonce-bootloader", bcb.command)) {
105 /* Erase the message in the BCB since this value should be used
106 * only once.
107 */
108 memset(bcb.command, 0, sizeof(bcb.command));
109 android_bootloader_message_write(dev_desc, misc_part_info,
110 &bcb);
111 return ANDROID_BOOT_MODE_BOOTLOADER;
112 }
113
114 if (!strcmp("boot-recovery", bcb.command))
115 return ANDROID_BOOT_MODE_RECOVERY;
116
117 if (!strcmp("boot-fastboot", bcb.command))
118 return ANDROID_BOOT_MODE_RECOVERY;
119
120 return ANDROID_BOOT_MODE_NORMAL;
121 }
122
android_bcb_write(char * cmd)123 int android_bcb_write(char *cmd)
124 {
125 struct android_bootloader_message message = {0};
126 disk_partition_t part_info;
127 struct blk_desc *dev_desc;
128 int ret;
129
130 if (!cmd)
131 return -ENOMEM;
132
133 if (strlen(cmd) >= 32)
134 return -ENOMEM;
135
136 dev_desc = rockchip_get_bootdev();
137 if (!dev_desc) {
138 printf("%s: dev_desc is NULL!\n", __func__);
139 return -ENODEV;
140 }
141
142 ret = part_get_info_by_name(dev_desc, ANDROID_PARTITION_MISC, &part_info);
143 if (ret < 0) {
144 printf("%s: Could not found misc partition, just run recovery\n",
145 __func__);
146 return -ENODEV;
147 }
148
149 strcpy(message.command, cmd);
150 return android_bootloader_message_write(dev_desc, &part_info, &message);
151 }
152
153 /**
154 * Return the reboot reason string for the passed boot mode.
155 *
156 * @param mode The Android Boot mode.
157 * @return a pointer to the reboot reason string for mode.
158 */
android_boot_mode_str(enum android_boot_mode mode)159 static const char *android_boot_mode_str(enum android_boot_mode mode)
160 {
161 switch (mode) {
162 case ANDROID_BOOT_MODE_NORMAL:
163 return "(none)";
164 case ANDROID_BOOT_MODE_RECOVERY:
165 return "recovery";
166 case ANDROID_BOOT_MODE_BOOTLOADER:
167 return "bootloader";
168 }
169 return NULL;
170 }
171
android_bootloader_boot_bootloader(void)172 static int android_bootloader_boot_bootloader(void)
173 {
174 const char *fastboot_cmd = env_get("fastbootcmd");
175
176 if (fastboot_cmd == NULL) {
177 printf("fastboot_cmd is null, run default fastboot_cmd!\n");
178 fastboot_cmd = "fastboot usb 0";
179 }
180
181 return run_command(fastboot_cmd, CMD_FLAG_ENV);
182 }
183
184 #ifdef CONFIG_SUPPORT_OEM_DTB
android_bootloader_get_fdt(const char * part_name,const char * load_file_name)185 static int android_bootloader_get_fdt(const char *part_name,
186 const char *load_file_name)
187 {
188 struct blk_desc *dev_desc;
189 disk_partition_t part_info;
190 char *fdt_addr = NULL;
191 char dev_part[3] = {0};
192 loff_t bytes = 0;
193 loff_t pos = 0;
194 loff_t len_read;
195 unsigned long addr = 0;
196 int part_num = -1;
197 int ret;
198
199 dev_desc = rockchip_get_bootdev();
200 if (!dev_desc) {
201 printf("%s: dev_desc is NULL!\n", __func__);
202 return -1;
203 }
204
205 part_num = part_get_info_by_name(dev_desc, part_name, &part_info);
206 if (part_num < 0) {
207 printf("ANDROID: Could not find partition \"%s\"\n", part_name);
208 return -1;
209 }
210
211 snprintf(dev_part, ARRAY_SIZE(dev_part), ":%x", part_num);
212 if (fs_set_blk_dev_with_part(dev_desc, part_num))
213 return -1;
214
215 fdt_addr = env_get("fdt_addr_r");
216 if (!fdt_addr) {
217 printf("ANDROID: No Found FDT Load Address.\n");
218 return -1;
219 }
220 addr = simple_strtoul(fdt_addr, NULL, 16);
221
222 ret = fs_read(load_file_name, addr, pos, bytes, &len_read);
223 if (ret < 0)
224 return -1;
225
226 return 0;
227 }
228 #endif
229
230 /*
231 * Test on RK3308 AARCH64 mode (Cortex A35 816 MHZ) boot with eMMC:
232 *
233 * |-------------------------------------------------------------------|
234 * | Format | Size(Byte) | Ratio | Decomp time(ms) | Boot time(ms) |
235 * |-------------------------------------------------------------------|
236 * | Image | 7720968 | | | 488 |
237 * |-------------------------------------------------------------------|
238 * | Image.lz4 | 4119448 | 53% | 59 | 455 |
239 * |-------------------------------------------------------------------|
240 * | Image.lzo | 3858322 | 49% | 141 | 536 |
241 * |-------------------------------------------------------------------|
242 * | Image.gz | 3529108 | 45% | 222 | 609 |
243 * |-------------------------------------------------------------------|
244 * | Image.bz2 | 3295914 | 42% | 2940 | |
245 * |-------------------------------------------------------------------|
246 * | Image.lzma| 2683750 | 34% | | |
247 * |-------------------------------------------------------------------|
248 */
sysmem_alloc_uncomp_kernel(ulong andr_hdr,ulong uncomp_kaddr,u32 comp)249 static int sysmem_alloc_uncomp_kernel(ulong andr_hdr,
250 ulong uncomp_kaddr, u32 comp)
251 {
252 struct andr_img_hdr *hdr = (struct andr_img_hdr *)andr_hdr;
253 ulong ksize, kaddr;
254
255 if (comp != IH_COMP_NONE) {
256 /* Release compressed sysmem */
257 kaddr = env_get_hex("kernel_addr_c", 0);
258 if (!kaddr)
259 kaddr = env_get_hex("kernel_addr_r", 0);
260 kaddr -= hdr->page_size;
261 if (sysmem_free((phys_addr_t)kaddr))
262 return -EINVAL;
263 #ifdef CONFIG_SKIP_RELOCATE_UBOOT
264 sysmem_free(CONFIG_SYS_TEXT_BASE);
265 #endif
266 /*
267 * Use smaller Ratio to get larger estimated uncompress
268 * kernel size.
269 */
270 if (comp == IH_COMP_ZIMAGE)
271 ksize = hdr->kernel_size * 100 / 45;
272 else if (comp == IH_COMP_LZ4)
273 ksize = hdr->kernel_size * 100 / 50;
274 else if (comp == IH_COMP_LZO)
275 ksize = hdr->kernel_size * 100 / 45;
276 else if (comp == IH_COMP_GZIP)
277 ksize = hdr->kernel_size * 100 / 40;
278 else if (comp == IH_COMP_BZIP2)
279 ksize = hdr->kernel_size * 100 / 40;
280 else if (comp == IH_COMP_LZMA)
281 ksize = hdr->kernel_size * 100 / 30;
282 else
283 ksize = hdr->kernel_size;
284
285 kaddr = uncomp_kaddr;
286 ksize = ALIGN(ksize, 512);
287 if (!sysmem_alloc_base(MEM_UNCOMP_KERNEL,
288 (phys_addr_t)kaddr, ksize))
289 return -ENOMEM;
290 }
291
292 return 0;
293 }
294
android_bootloader_boot_kernel(unsigned long kernel_address)295 int android_bootloader_boot_kernel(unsigned long kernel_address)
296 {
297 char *kernel_addr_r = env_get("kernel_addr_r");
298 char *kernel_addr_c = env_get("kernel_addr_c");
299 char *fdt_addr = env_get("fdt_addr_r");
300 char kernel_addr_str[12];
301 char comp_str[32] = {0};
302 ulong comp_type;
303 const char *comp_name[] = {
304 [IH_COMP_NONE] = "IMAGE",
305 [IH_COMP_GZIP] = "GZIP",
306 [IH_COMP_BZIP2] = "BZIP2",
307 [IH_COMP_LZMA] = "LZMA",
308 [IH_COMP_LZO] = "LZO",
309 [IH_COMP_LZ4] = "LZ4",
310 [IH_COMP_ZIMAGE]= "ZIMAGE",
311 };
312 char *bootm_args[] = {
313 kernel_addr_str, kernel_addr_str, fdt_addr, NULL };
314
315 comp_type = env_get_ulong("os_comp", 10, 0);
316 sprintf(kernel_addr_str, "0x%08lx", kernel_address);
317
318 if (comp_type != IH_COMP_NONE) {
319 if (comp_type == IH_COMP_ZIMAGE &&
320 kernel_addr_r && !kernel_addr_c) {
321 kernel_addr_c = kernel_addr_r;
322 kernel_addr_r = __stringify(CONFIG_SYS_SDRAM_BASE);
323 }
324 snprintf(comp_str, 32, "%s%s%s",
325 "(Uncompress to ", kernel_addr_r, ")");
326 }
327
328 printf("Booting %s kernel at %s%s with fdt at %s...\n\n\n",
329 comp_name[comp_type],
330 comp_type != IH_COMP_NONE ? kernel_addr_c : kernel_addr_r,
331 comp_str, fdt_addr);
332
333 hotkey_run(HK_SYSMEM);
334
335 /*
336 * Check whether there is enough space for uncompress kernel,
337 * Actually, here only gives a sysmem warning message when failed
338 * but never return -1.
339 */
340 if (sysmem_alloc_uncomp_kernel(kernel_address,
341 simple_strtoul(kernel_addr_r, NULL, 16),
342 comp_type))
343 return -1;
344
345 return do_bootm_states(NULL, 0, ARRAY_SIZE(bootm_args), bootm_args,
346 BOOTM_STATE_START |
347 BOOTM_STATE_FINDOS | BOOTM_STATE_FINDOTHER |
348 BOOTM_STATE_LOADOS |
349 #ifdef CONFIG_SYS_BOOT_RAMDISK_HIGH
350 BOOTM_STATE_RAMDISK |
351 #endif
352 BOOTM_STATE_OS_PREP | BOOTM_STATE_OS_FAKE_GO |
353 BOOTM_STATE_OS_GO, &images, 1);
354 }
355
strjoin(const char ** chunks,char separator)356 static char *strjoin(const char **chunks, char separator)
357 {
358 int len, joined_len = 0;
359 char *ret, *current;
360 const char **p;
361
362 for (p = chunks; *p; p++)
363 joined_len += strlen(*p) + 1;
364
365 if (!joined_len) {
366 ret = malloc(1);
367 if (ret)
368 ret[0] = '\0';
369 return ret;
370 }
371
372 ret = malloc(joined_len);
373 current = ret;
374 if (!ret)
375 return ret;
376
377 for (p = chunks; *p; p++) {
378 len = strlen(*p);
379 memcpy(current, *p, len);
380 current += len;
381 *current = separator;
382 current++;
383 }
384 /* Replace the last separator by a \0. */
385 current[-1] = '\0';
386 return ret;
387 }
388
389 /** android_assemble_cmdline - Assemble the command line to pass to the kernel
390 * @return a newly allocated string
391 */
android_assemble_cmdline(const char * slot_suffix,const char * extra_args)392 char *android_assemble_cmdline(const char *slot_suffix,
393 const char *extra_args)
394 {
395 const char *cmdline_chunks[16];
396 const char **current_chunk = cmdline_chunks;
397 char *env_cmdline, *cmdline, *rootdev_input, *serialno;
398 char *allocated_suffix = NULL;
399 char *allocated_serialno = NULL;
400 char *allocated_rootdev = NULL;
401 unsigned long rootdev_len;
402
403 env_cmdline = env_get("bootargs");
404 if (env_cmdline)
405 *(current_chunk++) = env_cmdline;
406
407 /* The |slot_suffix| needs to be passed to the kernel to know what
408 * slot to boot from.
409 */
410 #ifdef CONFIG_ANDROID_AB
411 if (slot_suffix) {
412 allocated_suffix = malloc(strlen(ANDROID_ARG_SLOT_SUFFIX) +
413 strlen(slot_suffix) + 1);
414 memset(allocated_suffix, 0, strlen(ANDROID_ARG_SLOT_SUFFIX)
415 + strlen(slot_suffix) + 1);
416 strcpy(allocated_suffix, ANDROID_ARG_SLOT_SUFFIX);
417 strcat(allocated_suffix, slot_suffix);
418 *(current_chunk++) = allocated_suffix;
419 }
420 #endif
421 serialno = env_get("serial#");
422 if (serialno) {
423 allocated_serialno = malloc(strlen(ANDROID_ARG_SERIALNO) +
424 strlen(serialno) + 1);
425 memset(allocated_serialno, 0, strlen(ANDROID_ARG_SERIALNO) +
426 strlen(serialno) + 1);
427 strcpy(allocated_serialno, ANDROID_ARG_SERIALNO);
428 strcat(allocated_serialno, serialno);
429 *(current_chunk++) = allocated_serialno;
430 }
431
432 rootdev_input = env_get("android_rootdev");
433 if (rootdev_input) {
434 rootdev_len = strlen(ANDROID_ARG_ROOT) + CONFIG_SYS_CBSIZE + 1;
435 allocated_rootdev = malloc(rootdev_len);
436 strcpy(allocated_rootdev, ANDROID_ARG_ROOT);
437 cli_simple_process_macros(rootdev_input,
438 allocated_rootdev +
439 strlen(ANDROID_ARG_ROOT));
440 /* Make sure that the string is null-terminated since the
441 * previous could not copy to the end of the input string if it
442 * is too big.
443 */
444 allocated_rootdev[rootdev_len - 1] = '\0';
445 *(current_chunk++) = allocated_rootdev;
446 }
447
448 if (extra_args)
449 *(current_chunk++) = extra_args;
450
451 *(current_chunk++) = NULL;
452 cmdline = strjoin(cmdline_chunks, ' ');
453 free(allocated_suffix);
454 free(allocated_rootdev);
455 return cmdline;
456 }
457
458 #ifdef CONFIG_ANDROID_AVB
slot_set_unbootable(AvbABSlotData * slot)459 static void slot_set_unbootable(AvbABSlotData* slot)
460 {
461 slot->priority = 0;
462 slot->tries_remaining = 0;
463 slot->successful_boot = 0;
464 }
465
join_str(const char * a,const char * b)466 static char *join_str(const char *a, const char *b)
467 {
468 size_t len = strlen(a) + strlen(b) + 1 /* null term */;
469 char *ret = (char *)malloc(len);
470
471 if (!ret) {
472 debug("failed to alloc %zu\n", len);
473 return NULL;
474 }
475 strcpy(ret, a);
476 strcat(ret, b);
477
478 return ret;
479 }
480
get_partition_size(AvbOps * ops,char * name,const char * slot_suffix)481 static size_t get_partition_size(AvbOps *ops, char *name,
482 const char *slot_suffix)
483 {
484 char *partition_name = join_str(name, slot_suffix);
485 uint64_t size = 0;
486 AvbIOResult res;
487
488 if (partition_name == NULL)
489 goto bail;
490
491 res = ops->get_size_of_partition(ops, partition_name, &size);
492 if (res != AVB_IO_RESULT_OK && res != AVB_IO_RESULT_ERROR_NO_SUCH_PARTITION)
493 size = 0;
494 bail:
495 if (partition_name)
496 free(partition_name);
497
498 return size;
499 }
500
501 static struct AvbOpsData preload_user_data;
502
avb_image_distribute_prepare(AvbSlotVerifyData * slot_data,AvbOps * ops,char * slot_suffix)503 static int avb_image_distribute_prepare(AvbSlotVerifyData *slot_data,
504 AvbOps *ops, char *slot_suffix)
505 {
506 struct AvbOpsData *data = (struct AvbOpsData *)(ops->user_data);
507 size_t vendor_boot_size;
508 size_t init_boot_size;
509 size_t resource_size;
510 size_t boot_size;
511 void *image_buf;
512
513 boot_size = max(get_partition_size(ops, ANDROID_PARTITION_BOOT, slot_suffix),
514 get_partition_size(ops, ANDROID_PARTITION_RECOVERY, slot_suffix));
515 init_boot_size = get_partition_size(ops,
516 ANDROID_PARTITION_INIT_BOOT, slot_suffix);
517 vendor_boot_size = get_partition_size(ops,
518 ANDROID_PARTITION_VENDOR_BOOT, slot_suffix);
519 resource_size = get_partition_size(ops,
520 ANDROID_PARTITION_RESOURCE, slot_suffix);
521 image_buf = sysmem_alloc(MEM_AVB_ANDROID,
522 boot_size + init_boot_size +
523 vendor_boot_size + resource_size);
524 if (!image_buf) {
525 printf("avb: sysmem alloc failed\n");
526 return -ENOMEM;
527 }
528
529 /* layout: | boot/recovery | vendor_boot | init_boot | resource | */
530 data->slot_suffix = slot_suffix;
531 data->boot.addr = image_buf;
532 data->boot.size = 0;
533 data->vendor_boot.addr = data->boot.addr + boot_size;
534 data->vendor_boot.size = 0;
535 data->init_boot.addr = data->vendor_boot.addr + vendor_boot_size;
536 data->init_boot.size = 0;
537 data->resource.addr = data->init_boot.addr + init_boot_size;
538 data->resource.size = 0;
539
540 return 0;
541 }
542
avb_image_distribute_finish(AvbSlotVerifyData * slot_data,AvbSlotVerifyFlags flags,ulong * load_address)543 static int avb_image_distribute_finish(AvbSlotVerifyData *slot_data,
544 AvbSlotVerifyFlags flags,
545 ulong *load_address)
546 {
547 struct andr_img_hdr *hdr;
548 ulong load_addr = *load_address;
549 void *vendor_boot_hdr = NULL;
550 void *init_boot_hdr = NULL;
551 void *boot_hdr = NULL;
552 char *part_name;
553 int i, ret;
554
555 for (i = 0; i < slot_data->num_loaded_partitions; i++) {
556 part_name = slot_data->loaded_partitions[i].partition_name;
557 if (!strncmp(ANDROID_PARTITION_BOOT, part_name, 4) ||
558 !strncmp(ANDROID_PARTITION_RECOVERY, part_name, 8)) {
559 boot_hdr = slot_data->loaded_partitions[i].data;
560 } else if (!strncmp(ANDROID_PARTITION_INIT_BOOT, part_name, 9)) {
561 init_boot_hdr = slot_data->loaded_partitions[i].data;
562 } else if (!strncmp(ANDROID_PARTITION_VENDOR_BOOT, part_name, 11)) {
563 vendor_boot_hdr = slot_data->loaded_partitions[i].data;
564 }
565 }
566
567 /*
568 * populate boot_img_hdr_v34
569 *
570 * If allow verification error: the images are loaded by
571 * ops->get_preloaded_partition() which auto populates
572 * boot_img_hdr_v34.
573 *
574 * If not allow verification error: the images are full loaded
575 * by ops->read_from_partition() which doesn't populate
576 * boot_img_hdr_v34, we need to fix it here for bootm and
577 */
578
579 hdr = boot_hdr;
580 if (hdr->header_version >= 3 &&
581 !(flags & AVB_SLOT_VERIFY_FLAGS_ALLOW_VERIFICATION_ERROR)) {
582 hdr = malloc(sizeof(struct andr_img_hdr));
583 if (!hdr)
584 return -ENOMEM;
585
586 ret = populate_boot_info(boot_hdr, vendor_boot_hdr,
587 init_boot_hdr, hdr, true);
588 if (ret < 0) {
589 printf("avb: populate boot info failed, ret=%d\n", ret);
590 return ret;
591 }
592 memcpy(boot_hdr, hdr, sizeof(*hdr));
593 }
594
595 /* distribute ! */
596 load_addr -= hdr->page_size;
597 if (android_image_memcpy_separate(boot_hdr, &load_addr)) {
598 printf("Failed to separate copy android image\n");
599 return AVB_SLOT_VERIFY_RESULT_ERROR_IO;
600 }
601
602 *load_address = load_addr;
603
604 return 0;
605 }
606
android_image_verify_resource(const char * boot_part,ulong * resc_buf)607 int android_image_verify_resource(const char *boot_part, ulong *resc_buf)
608 {
609 const char *requested_partitions[] = {
610 NULL,
611 NULL,
612 };
613 struct AvbOpsData *data;
614 uint8_t unlocked = true;
615 AvbOps *ops;
616 AvbSlotVerifyFlags flags;
617 AvbSlotVerifyData *slot_data = {NULL};
618 AvbSlotVerifyResult verify_result;
619 char slot_suffix[3] = {0};
620 char *part_name;
621 void *image_buf = NULL;
622 int retry_no_vbmeta_partition = 1;
623 int i, ret;
624
625 ops = avb_ops_user_new();
626 if (ops == NULL) {
627 printf("avb_ops_user_new() failed!\n");
628 return -AVB_SLOT_VERIFY_RESULT_ERROR_OOM;
629 }
630
631 if (ops->read_is_device_unlocked(ops, (bool *)&unlocked) != AVB_IO_RESULT_OK)
632 printf("Error determining whether device is unlocked.\n");
633
634 printf("Device is: %s\n", (unlocked & LOCK_MASK)? "UNLOCKED" : "LOCKED");
635
636 if (unlocked & LOCK_MASK) {
637 *resc_buf = 0;
638 return 0;
639 }
640
641 flags = AVB_SLOT_VERIFY_FLAGS_NONE;
642 if (strcmp(boot_part, ANDROID_PARTITION_RECOVERY) == 0)
643 flags |= AVB_SLOT_VERIFY_FLAGS_NO_VBMETA_PARTITION;
644
645 #ifdef CONFIG_ANDROID_AB
646 part_name = strdup(boot_part);
647 *(part_name + strlen(boot_part) - 2) = '\0';
648 requested_partitions[0] = part_name;
649
650 ret = rk_avb_get_current_slot(slot_suffix);
651 if (ret) {
652 printf("Failed to get slot suffix, ret=%d\n", ret);
653 return ret;
654 }
655 #else
656 requested_partitions[0] = boot_part;
657 #endif
658 data = (struct AvbOpsData *)(ops->user_data);
659 ret = avb_image_distribute_prepare(slot_data, ops, slot_suffix);
660 if (ret) {
661 printf("avb image distribute prepare failed %d\n", ret);
662 return ret;
663 }
664
665 retry_verify:
666 verify_result =
667 avb_slot_verify(ops,
668 requested_partitions,
669 slot_suffix,
670 flags,
671 AVB_HASHTREE_ERROR_MODE_RESTART,
672 &slot_data);
673 if (verify_result != AVB_SLOT_VERIFY_RESULT_OK &&
674 verify_result != AVB_SLOT_VERIFY_RESULT_ERROR_PUBLIC_KEY_REJECTED) {
675 if (retry_no_vbmeta_partition && strcmp(boot_part, ANDROID_PARTITION_RECOVERY) == 0) {
676 printf("Verify recovery with vbmeta.\n");
677 flags &= ~AVB_SLOT_VERIFY_FLAGS_NO_VBMETA_PARTITION;
678 retry_no_vbmeta_partition = 0;
679 goto retry_verify;
680 }
681 }
682
683 if (verify_result != AVB_SLOT_VERIFY_RESULT_OK || !slot_data) {
684 sysmem_free((ulong)data->boot.addr);
685 return verify_result;
686 }
687
688 for (i = 0; i < slot_data->num_loaded_partitions; i++) {
689 part_name = slot_data->loaded_partitions[i].partition_name;
690 if (!strncmp(ANDROID_PARTITION_RESOURCE, part_name, 8)) {
691 image_buf = slot_data->loaded_partitions[i].data;
692 break;
693 } else if (!strncmp(ANDROID_PARTITION_BOOT, part_name, 4) ||
694 !strncmp(ANDROID_PARTITION_RECOVERY, part_name, 8)) {
695 struct andr_img_hdr *hdr;
696
697 hdr = (void *)slot_data->loaded_partitions[i].data;
698 if (android_image_check_header(hdr))
699 continue;
700
701 if (hdr->header_version <= 2) {
702 image_buf = (void *)hdr + hdr->page_size +
703 ALIGN(hdr->kernel_size, hdr->page_size) +
704 ALIGN(hdr->ramdisk_size, hdr->page_size);
705 break;
706 }
707 }
708 }
709
710 if (image_buf) {
711 memcpy((char *)&preload_user_data, (char *)data, sizeof(*data));
712 *resc_buf = (ulong)image_buf;
713 }
714
715 return 0;
716 }
717
718 /*
719 * AVB Policy.
720 *
721 * == avb with unlock:
722 * Don't process hash verify.
723 * Go pre-loaded path: Loading vendor_boot and init_boot
724 * directly to where they should be, while loading the
725 * boot/recovery. The boot message tells like:
726 * ···
727 * preloaded: distribute image from 'boot_a'
728 * preloaded: distribute image from 'init_boot_a'
729 * preloaded: distribute image from 'vendor_boot_a'
730 * ···
731 *
732 * == avb with lock:
733 * Process hash verify.
734 * Go pre-loaded path: Loading full vendor_boot, init_boot and
735 * boot/recovery one by one to verify, and distributing them to
736 * where they should be by memcpy at last.
737 *
738 * The three images share a large memory buffer that allocated
739 * by sysmem_alloc(), it locate at high memory address that
740 * just lower than SP bottom. The boot message tells like:
741 * ···
742 * preloaded: full image from 'boot_a' at 0xe47f90c0 - 0xe7a4b0c0
743 * preloaded: full image from 'init_boot_a' at 0xeaff90c0 - 0xeb2950c0
744 * preloaded: full image from 'vendor_boot_a' at 0xe87f90c0 - 0xe9f6e0c0
745 * ···
746 */
android_slot_verify(char * boot_partname,unsigned long * android_load_address,char * slot_suffix)747 static AvbSlotVerifyResult android_slot_verify(char *boot_partname,
748 unsigned long *android_load_address,
749 char *slot_suffix)
750 {
751 const char *requested_partitions[] = {
752 boot_partname,
753 NULL,
754 NULL,
755 NULL,
756 };
757 struct AvbOpsData *data;
758 struct blk_desc *dev_desc;
759 struct andr_img_hdr *hdr;
760 disk_partition_t part_info;
761 uint8_t unlocked = true;
762 AvbOps *ops;
763 AvbSlotVerifyFlags flags;
764 AvbSlotVerifyData *slot_data = {NULL};
765 AvbSlotVerifyResult verify_result;
766 AvbABData ab_data, ab_data_orig;
767 size_t slot_index_to_boot = 0;
768 char verify_state[38] = {0};
769 char can_boot = 1;
770 char retry_no_vbmeta_partition = 1;
771 unsigned long load_address = *android_load_address;
772 int ret;
773
774 dev_desc = rockchip_get_bootdev();
775 if (!dev_desc)
776 return AVB_IO_RESULT_ERROR_IO;
777
778 if (part_get_info_by_name(dev_desc, boot_partname, &part_info) < 0) {
779 printf("Could not find \"%s\" partition\n", boot_partname);
780 return AVB_IO_RESULT_ERROR_NO_SUCH_PARTITION;
781 }
782
783 hdr = populate_andr_img_hdr(dev_desc, &part_info);
784 if (!hdr) {
785 printf("No valid android hdr\n");
786 return AVB_IO_RESULT_ERROR_NO_SUCH_VALUE;
787 }
788
789 if (hdr->header_version >= 4) {
790 requested_partitions[1] = ANDROID_PARTITION_VENDOR_BOOT;
791 if (((hdr->os_version >> 25) & 0x7f) >= 13)
792 requested_partitions[2] = ANDROID_PARTITION_INIT_BOOT;
793 }
794
795 ops = avb_ops_user_new();
796 if (ops == NULL) {
797 printf("avb_ops_user_new() failed!\n");
798 return AVB_SLOT_VERIFY_RESULT_ERROR_OOM;
799 }
800
801 if (ops->read_is_device_unlocked(ops, (bool *)&unlocked) != AVB_IO_RESULT_OK)
802 printf("Error determining whether device is unlocked.\n");
803
804 printf("read_is_device_unlocked() ops returned that device is %s\n",
805 (unlocked & LOCK_MASK)? "UNLOCKED" : "LOCKED");
806
807 flags = AVB_SLOT_VERIFY_FLAGS_NONE;
808 if (unlocked & LOCK_MASK)
809 flags |= AVB_SLOT_VERIFY_FLAGS_ALLOW_VERIFICATION_ERROR;
810
811 if (load_metadata(ops->ab_ops, &ab_data, &ab_data_orig)) {
812 printf("Can not load metadata\n");
813 return AVB_SLOT_VERIFY_RESULT_ERROR_IO;
814 }
815
816 if (!strncmp(slot_suffix, "_a", 2))
817 slot_index_to_boot = 0;
818 else if (!strncmp(slot_suffix, "_b", 2))
819 slot_index_to_boot = 1;
820 else
821 slot_index_to_boot = 0;
822
823 if (strcmp(boot_partname, ANDROID_PARTITION_RECOVERY) == 0)
824 flags |= AVB_SLOT_VERIFY_FLAGS_NO_VBMETA_PARTITION;
825
826 #ifdef CONFIG_MP_BOOT
827 preload_user_data.boot.addr = (void *)mpb_post(1);
828 preload_user_data.boot.size = (size_t)mpb_post(2);
829 #endif
830
831 /* use preload one if available */
832 if (preload_user_data.boot.addr) {
833 data = (struct AvbOpsData *)(ops->user_data);
834
835 data->slot_suffix = slot_suffix;
836 data->boot = preload_user_data.boot;
837 data->vendor_boot = preload_user_data.vendor_boot;
838 data->init_boot = preload_user_data.init_boot;
839 data->resource = preload_user_data.resource;
840 } else {
841 ret = avb_image_distribute_prepare(slot_data, ops, slot_suffix);
842 if (ret < 0) {
843 printf("avb image distribute prepare failed %d\n", ret);
844 return AVB_SLOT_VERIFY_RESULT_ERROR_OOM;
845 }
846 }
847
848 retry_verify:
849 verify_result =
850 avb_slot_verify(ops,
851 requested_partitions,
852 slot_suffix,
853 flags,
854 AVB_HASHTREE_ERROR_MODE_RESTART,
855 &slot_data);
856 if (verify_result != AVB_SLOT_VERIFY_RESULT_OK &&
857 verify_result != AVB_SLOT_VERIFY_RESULT_ERROR_PUBLIC_KEY_REJECTED) {
858 if (retry_no_vbmeta_partition && strcmp(boot_partname, ANDROID_PARTITION_RECOVERY) == 0) {
859 printf("Verify recovery with vbmeta.\n");
860 flags &= ~AVB_SLOT_VERIFY_FLAGS_NO_VBMETA_PARTITION;
861 retry_no_vbmeta_partition = 0;
862 goto retry_verify;
863 }
864 }
865
866 strcat(verify_state, ANDROID_VERIFY_STATE);
867 switch (verify_result) {
868 case AVB_SLOT_VERIFY_RESULT_OK:
869 if (unlocked & LOCK_MASK)
870 strcat(verify_state, "orange");
871 else
872 strcat(verify_state, "green");
873 break;
874 case AVB_SLOT_VERIFY_RESULT_ERROR_PUBLIC_KEY_REJECTED:
875 if (unlocked & LOCK_MASK)
876 strcat(verify_state, "orange");
877 else
878 strcat(verify_state, "yellow");
879 break;
880 case AVB_SLOT_VERIFY_RESULT_ERROR_OOM:
881 case AVB_SLOT_VERIFY_RESULT_ERROR_IO:
882 case AVB_SLOT_VERIFY_RESULT_ERROR_INVALID_METADATA:
883 case AVB_SLOT_VERIFY_RESULT_ERROR_UNSUPPORTED_VERSION:
884 case AVB_SLOT_VERIFY_RESULT_ERROR_VERIFICATION:
885 case AVB_SLOT_VERIFY_RESULT_ERROR_ROLLBACK_INDEX:
886 default:
887 if (unlocked & LOCK_MASK)
888 strcat(verify_state, "orange");
889 else
890 strcat(verify_state, "red");
891 break;
892 }
893
894 if (!slot_data) {
895 can_boot = 0;
896 goto out;
897 }
898
899 if (verify_result == AVB_SLOT_VERIFY_RESULT_OK ||
900 verify_result == AVB_SLOT_VERIFY_RESULT_ERROR_PUBLIC_KEY_REJECTED ||
901 (unlocked & LOCK_MASK)) {
902 int len = 0;
903 char *bootargs, *newbootargs;
904 #ifdef CONFIG_ANDROID_AVB_ROLLBACK_INDEX
905 if (rk_avb_update_stored_rollback_indexes_for_slot(ops, slot_data))
906 printf("Fail to update the rollback indexes.\n");
907 #endif
908 if (slot_data->cmdline) {
909 debug("Kernel command line: %s\n", slot_data->cmdline);
910 len += strlen(slot_data->cmdline);
911 }
912
913 bootargs = env_get("bootargs");
914 if (bootargs)
915 len += strlen(bootargs);
916
917 newbootargs = malloc(len + 2);
918
919 if (!newbootargs) {
920 puts("Error: malloc in android_slot_verify failed!\n");
921 return AVB_SLOT_VERIFY_RESULT_ERROR_OOM;
922 }
923 *newbootargs = '\0';
924
925 if (bootargs) {
926 strcpy(newbootargs, bootargs);
927 strcat(newbootargs, " ");
928 }
929 if (slot_data->cmdline)
930 strcat(newbootargs, slot_data->cmdline);
931 env_set("bootargs", newbootargs);
932
933 /* if need, distribute full image to where they should be */
934 ret = avb_image_distribute_finish(slot_data, flags, &load_address);
935 if (ret) {
936 printf("avb image distribute finish failed %d\n", ret);
937 return ret;
938 }
939 *android_load_address = load_address;
940 } else {
941 slot_set_unbootable(&ab_data.slots[slot_index_to_boot]);
942 }
943
944 out:
945 env_update("bootargs", verify_state);
946 if (save_metadata_if_changed(ops->ab_ops, &ab_data, &ab_data_orig)) {
947 printf("Can not save metadata\n");
948 verify_result = AVB_SLOT_VERIFY_RESULT_ERROR_IO;
949 }
950
951 if (slot_data != NULL)
952 avb_slot_verify_data_free(slot_data);
953
954 if ((unlocked & LOCK_MASK) && can_boot)
955 return 0;
956 else
957 return verify_result;
958 }
959 #endif
960
961 #if defined(CONFIG_CMD_DTIMG) && defined(CONFIG_OF_LIBFDT_OVERLAY)
962
963 /*
964 * Default return index 0.
965 */
board_select_fdt_index(ulong dt_table_hdr)966 __weak int board_select_fdt_index(ulong dt_table_hdr)
967 {
968 /*
969 * User can use "dt_for_each_entry(entry, hdr, idx)" to iterate
970 * over all dt entry of DT image and pick up which they want.
971 *
972 * Example:
973 * struct dt_table_entry *entry;
974 * int index;
975 *
976 * dt_for_each_entry(entry, dt_table_hdr, index) {
977 *
978 * .... (use entry)
979 * }
980 *
981 * return index;
982 */
983 return 0;
984 }
985
android_get_dtbo(ulong * fdt_dtbo,const struct andr_img_hdr * hdr,int * index,const char * part_dtbo)986 static int android_get_dtbo(ulong *fdt_dtbo,
987 const struct andr_img_hdr *hdr,
988 int *index, const char *part_dtbo)
989 {
990 struct dt_table_header *dt_hdr = NULL;
991 struct blk_desc *dev_desc;
992 disk_partition_t part_info;
993 u32 blk_offset, blk_cnt;
994 void *buf;
995 ulong e_addr;
996 u32 e_size;
997 int e_idx;
998 int ret;
999
1000 /* Get partition info */
1001 dev_desc = rockchip_get_bootdev();
1002 if (!dev_desc)
1003 return -ENODEV;
1004
1005 ret = part_get_info_by_name(dev_desc, part_dtbo, &part_info);
1006 if (ret < 0) {
1007 printf("No %s partition, ret=%d\n", part_dtbo, ret);
1008 return ret;
1009 }
1010
1011 /* Check dt table header */
1012 if (!strcmp(part_dtbo, PART_RECOVERY))
1013 blk_offset = part_info.start +
1014 (hdr->recovery_dtbo_offset / part_info.blksz);
1015 else
1016 blk_offset = part_info.start;
1017
1018 dt_hdr = memalign(ARCH_DMA_MINALIGN, part_info.blksz);
1019 if (!dt_hdr)
1020 return -ENOMEM;
1021
1022 ret = blk_dread(dev_desc, blk_offset, 1, dt_hdr);
1023 if (ret != 1)
1024 goto out1;
1025
1026 if (!android_dt_check_header((ulong)dt_hdr)) {
1027 printf("DTBO: invalid dt table header: 0x%x\n", dt_hdr->magic);
1028 ret = -EINVAL;
1029 goto out1;
1030 }
1031
1032 #ifdef DEBUG
1033 android_dt_print_contents((ulong)dt_hdr);
1034 #endif
1035
1036 blk_cnt = DIV_ROUND_UP(fdt32_to_cpu(dt_hdr->total_size),
1037 part_info.blksz);
1038 /* Read all DT Image */
1039 buf = memalign(ARCH_DMA_MINALIGN, part_info.blksz * blk_cnt);
1040 if (!buf) {
1041 ret = -ENOMEM;
1042 goto out1;
1043 }
1044
1045 ret = blk_dread(dev_desc, blk_offset, blk_cnt, buf);
1046 if (ret != blk_cnt)
1047 goto out2;
1048
1049 e_idx = board_select_fdt_index((ulong)buf);
1050 if (e_idx < 0) {
1051 printf("%s: failed to select board fdt index\n", __func__);
1052 ret = -EINVAL;
1053 goto out2;
1054 }
1055
1056 ret = android_dt_get_fdt_by_index((ulong)buf, e_idx, &e_addr, &e_size);
1057 if (!ret) {
1058 printf("%s: failed to get fdt, index=%d\n", __func__, e_idx);
1059 ret = -EINVAL;
1060 goto out2;
1061 }
1062
1063 if (fdt_dtbo)
1064 *fdt_dtbo = e_addr;
1065 if (index)
1066 *index = e_idx;
1067
1068 free(dt_hdr);
1069 debug("ANDROID: Loading dt entry to 0x%lx size 0x%x idx %d from \"%s\" part\n",
1070 e_addr, e_size, e_idx, part_dtbo);
1071
1072 return 0;
1073
1074 out2:
1075 free(buf);
1076 out1:
1077 free(dt_hdr);
1078
1079 return ret;
1080 }
1081
android_fdt_overlay_apply(void * fdt_addr)1082 int android_fdt_overlay_apply(void *fdt_addr)
1083 {
1084 struct andr_img_hdr *hdr;
1085 struct blk_desc *dev_desc;
1086 const char *part_boot = PART_BOOT;
1087 disk_partition_t part_info;
1088 char *fdt_backup;
1089 char *part_dtbo = PART_DTBO;
1090 char buf[32] = {0};
1091 ulong fdt_dtbo = -1;
1092 u32 totalsize;
1093 int index = -1;
1094 int ret;
1095
1096 if (rockchip_get_boot_mode() == BOOT_MODE_RECOVERY) {
1097 #ifdef CONFIG_ANDROID_AB
1098 bool can_find_recovery;
1099
1100 can_find_recovery = ab_can_find_recovery_part();
1101 part_boot = can_find_recovery ? PART_RECOVERY : PART_BOOT;
1102 part_dtbo = can_find_recovery ? PART_RECOVERY : PART_DTBO;
1103 #else
1104 part_boot = PART_RECOVERY;
1105 part_dtbo = PART_RECOVERY;
1106 #endif
1107 }
1108
1109 dev_desc = rockchip_get_bootdev();
1110 if (!dev_desc)
1111 return -ENODEV;
1112
1113 ret = part_get_info_by_name(dev_desc, part_boot, &part_info);
1114 if (ret < 0)
1115 return ret;
1116
1117 hdr = populate_andr_img_hdr(dev_desc, &part_info);
1118 if (!hdr)
1119 return -EINVAL;
1120 #ifdef DEBUG
1121 android_print_contents(hdr);
1122 #endif
1123
1124 /*
1125 * Google requires a/b system mandory from Android Header v3 for
1126 * google authentication, that means there is not recovery.
1127 *
1128 * But for the products that don't care about google authentication,
1129 * it's not mandory to use a/b system. So that we use the solution:
1130 * boot.img(v3+) with recovery(v2).
1131 *
1132 * [recovery_dtbo fields]
1133 * recovery.img with boot_img_hdr_v1,2: supported
1134 * recovery.img with boot_img_hdr_v0,3+: illegal
1135 */
1136 if ((hdr->header_version == 0) ||
1137 (hdr->header_version >= 3 && !strcmp(part_boot, PART_RECOVERY)))
1138 goto out;
1139
1140 ret = android_get_dtbo(&fdt_dtbo, (void *)hdr, &index, part_dtbo);
1141 if (!ret) {
1142 phys_size_t fdt_size;
1143
1144 /* Must incease size before overlay */
1145 fdt_size = fdt_totalsize((void *)fdt_addr) +
1146 fdt_totalsize((void *)fdt_dtbo);
1147 if (sysmem_free((phys_addr_t)fdt_addr))
1148 goto out;
1149
1150 if (!sysmem_alloc_base(MEM_FDT_DTBO,
1151 (phys_addr_t)fdt_addr,
1152 fdt_size + CONFIG_SYS_FDT_PAD))
1153 goto out;
1154 /*
1155 * Backup main fdt in case of being destroyed by
1156 * fdt_overlay_apply() when it overlys failed.
1157 */
1158 totalsize = fdt_totalsize(fdt_addr);
1159 fdt_backup = malloc(totalsize);
1160 if (!fdt_backup)
1161 goto out;
1162
1163 memcpy(fdt_backup, fdt_addr, totalsize);
1164 fdt_increase_size(fdt_addr, fdt_totalsize((void *)fdt_dtbo));
1165 ret = fdt_overlay_apply(fdt_addr, (void *)fdt_dtbo);
1166 if (!ret) {
1167 snprintf(buf, 32, "%s%d", "androidboot.dtbo_idx=", index);
1168 env_update("bootargs", buf);
1169 printf("ANDROID: fdt overlay OK\n");
1170 } else {
1171 memcpy(fdt_addr, fdt_backup, totalsize);
1172 printf("ANDROID: fdt overlay failed, ret=%d\n", ret);
1173 }
1174
1175 free(fdt_backup);
1176 }
1177
1178 out:
1179 free(hdr);
1180
1181 return 0;
1182 }
1183 #endif
1184
android_image_load_by_partname(struct blk_desc * dev_desc,const char * boot_partname,unsigned long * load_address)1185 int android_image_load_by_partname(struct blk_desc *dev_desc,
1186 const char *boot_partname,
1187 unsigned long *load_address)
1188 {
1189 disk_partition_t boot_part;
1190 int ret, part_num;
1191
1192 part_num = part_get_info_by_name(dev_desc, boot_partname, &boot_part);
1193 if (part_num < 0) {
1194 printf("%s: Can't find part: %s\n", __func__, boot_partname);
1195 return -1;
1196 }
1197 debug("ANDROID: Loading kernel from \"%s\", partition %d.\n",
1198 boot_part.name, part_num);
1199
1200 ret = android_image_load(dev_desc, &boot_part, *load_address, -1UL);
1201 if (ret < 0) {
1202 debug("%s: %s part load fail, ret=%d\n",
1203 __func__, boot_part.name, ret);
1204 return ret;
1205 }
1206 *load_address = ret;
1207
1208 return 0;
1209 }
1210
android_bootloader_boot_flow(struct blk_desc * dev_desc,unsigned long load_address)1211 int android_bootloader_boot_flow(struct blk_desc *dev_desc,
1212 unsigned long load_address)
1213 {
1214 enum android_boot_mode mode = ANDROID_BOOT_MODE_NORMAL;
1215 disk_partition_t misc_part_info;
1216 int part_num;
1217 char *command_line;
1218 char slot_suffix[3] = {0};
1219 const char *mode_cmdline = NULL;
1220 char *boot_partname = ANDROID_PARTITION_BOOT;
1221
1222 /*
1223 * 1. Load MISC partition and determine the boot mode
1224 * clear its value for the next boot if needed.
1225 */
1226 part_num = part_get_info_by_name(dev_desc, ANDROID_PARTITION_MISC,
1227 &misc_part_info);
1228 if (part_num < 0) {
1229 printf("Could not find misc partition\n");
1230 } else {
1231 #ifdef CONFIG_ANDROID_KEYMASTER_CA
1232 /* load attestation key from misc partition. */
1233 load_attestation_key(dev_desc, &misc_part_info);
1234 #endif
1235
1236 mode = android_bootloader_load_and_clear_mode(dev_desc,
1237 &misc_part_info);
1238 #ifdef CONFIG_RKIMG_BOOTLOADER
1239 if (mode == ANDROID_BOOT_MODE_NORMAL) {
1240 if (rockchip_get_boot_mode() == BOOT_MODE_RECOVERY)
1241 mode = ANDROID_BOOT_MODE_RECOVERY;
1242 }
1243 #endif
1244 }
1245
1246 printf("ANDROID: reboot reason: \"%s\"\n", android_boot_mode_str(mode));
1247 #ifdef CONFIG_ANDROID_AB
1248 /* Get current slot_suffix */
1249 if (ab_get_slot_suffix(slot_suffix))
1250 return -1;
1251 #endif
1252 switch (mode) {
1253 case ANDROID_BOOT_MODE_NORMAL:
1254 /* In normal mode, we load the kernel from "boot" but append
1255 * "skip_initramfs" to the cmdline to make it ignore the
1256 * recovery initramfs in the boot partition.
1257 */
1258 #ifdef CONFIG_ANDROID_AB
1259 /* In A/B, the recovery image is built as boot.img, containing the
1260 * recovery's ramdisk. Previously, bootloader used the skip_initramfs
1261 * kernel command line parameter to decide which mode to boot into.
1262 * For Android >=10 and with dynamic partition support, the bootloader
1263 * MUST NOT pass skip_initramfs to the kernel command-line.
1264 * Instead, bootloader should pass androidboot.force_normal_boot=1
1265 * and then Android's first-stage init in ramdisk
1266 * will skip recovery and boot normal Android.
1267 */
1268 if (ab_is_support_dynamic_partition(dev_desc)) {
1269 mode_cmdline = "androidboot.force_normal_boot=1";
1270 } else {
1271 mode_cmdline = "skip_initramfs";
1272 }
1273 #endif
1274 break;
1275 case ANDROID_BOOT_MODE_RECOVERY:
1276 /*
1277 * In recovery mode, if have recovery partition, we still boot the
1278 * kernel from "recovery". If not, don't skip the initramfs so it
1279 * boots to recovery from image in partition "boot".
1280 */
1281 #ifdef CONFIG_ANDROID_AB
1282 boot_partname = ab_can_find_recovery_part() ?
1283 ANDROID_PARTITION_RECOVERY : ANDROID_PARTITION_BOOT;
1284 #else
1285 boot_partname = ANDROID_PARTITION_RECOVERY;
1286 #endif
1287 break;
1288 case ANDROID_BOOT_MODE_BOOTLOADER:
1289 /* Bootloader mode enters fastboot. If this operation fails we
1290 * simply return since we can't recover from this situation by
1291 * switching to another slot.
1292 */
1293 return android_bootloader_boot_bootloader();
1294 }
1295
1296 #ifdef CONFIG_ANDROID_AVB
1297 uint8_t vboot_flag = 0;
1298 disk_partition_t vbmeta_part_info;
1299
1300 #ifdef CONFIG_OPTEE_CLIENT
1301 if (trusty_read_vbootkey_enable_flag(&vboot_flag)) {
1302 printf("Can't read vboot flag\n");
1303 return -1;
1304 }
1305 #endif
1306 if (vboot_flag) {
1307 printf("Vboot=1, SecureBoot enabled, AVB verify\n");
1308 if (android_slot_verify(boot_partname, &load_address,
1309 slot_suffix)) {
1310 printf("AVB verify failed\n");
1311
1312 return -1;
1313 }
1314 } else {
1315 part_num = part_get_info_by_name(dev_desc,
1316 ANDROID_PARTITION_VBMETA,
1317 &vbmeta_part_info);
1318 if (part_num < 0) {
1319 printf("Not AVB images, AVB skip\n");
1320 env_update("bootargs",
1321 "androidboot.verifiedbootstate=orange");
1322 if (android_image_load_by_partname(dev_desc,
1323 boot_partname,
1324 &load_address)) {
1325 printf("Android image load failed\n");
1326 return -1;
1327 }
1328 } else {
1329 printf("Vboot=0, AVB images, AVB verify\n");
1330 if (android_slot_verify(boot_partname, &load_address,
1331 slot_suffix)) {
1332 printf("AVB verify failed\n");
1333
1334 return -1;
1335 }
1336 }
1337 }
1338 #else
1339 /*
1340 * 2. Load the boot/recovery from the desired "boot" partition.
1341 * Determine if this is an AOSP image.
1342 */
1343 if (android_image_load_by_partname(dev_desc,
1344 boot_partname,
1345 &load_address)) {
1346 printf("Android image load failed\n");
1347 return -1;
1348 }
1349 #endif
1350
1351 /* Set Android root variables. */
1352 env_set_ulong("android_root_devnum", dev_desc->devnum);
1353 env_set("android_slotsufix", slot_suffix);
1354
1355 #ifdef CONFIG_FASTBOOT_OEM_UNLOCK
1356 /* read oem unlock status and attach to bootargs */
1357 uint8_t unlock = 0;
1358 TEEC_Result result;
1359 char oem_unlock[OEM_UNLOCK_ARG_SIZE] = {0};
1360 result = trusty_read_oem_unlock(&unlock);
1361 if (result) {
1362 printf("read oem unlock status with error : 0x%x\n", result);
1363 } else {
1364 snprintf(oem_unlock, OEM_UNLOCK_ARG_SIZE, "androidboot.oem_unlocked=%d", unlock);
1365 env_update("bootargs", oem_unlock);
1366 }
1367 #endif
1368
1369 /* Assemble the command line */
1370 command_line = android_assemble_cmdline(slot_suffix, mode_cmdline);
1371 env_update("bootargs", command_line);
1372
1373 debug("ANDROID: bootargs: \"%s\"\n", command_line);
1374
1375 #ifdef CONFIG_SUPPORT_OEM_DTB
1376 if (android_bootloader_get_fdt(ANDROID_PARTITION_OEM,
1377 ANDROID_ARG_FDT_FILENAME)) {
1378 printf("Can not get the fdt data from oem!\n");
1379 }
1380 #endif
1381 #ifdef CONFIG_OPTEE_CLIENT
1382 if (trusty_notify_optee_uboot_end())
1383 printf("Close optee client failed!\n");
1384 #endif
1385
1386 #ifdef CONFIG_AMP
1387 return android_bootloader_boot_kernel(load_address);
1388 #else
1389 android_bootloader_boot_kernel(load_address);
1390
1391 /* TODO: If the kernel doesn't boot mark the selected slot as bad. */
1392 return -1;
1393 #endif
1394 }
1395
android_avb_boot_flow(unsigned long kernel_address)1396 int android_avb_boot_flow(unsigned long kernel_address)
1397 {
1398 struct blk_desc *dev_desc;
1399 disk_partition_t boot_part_info;
1400 int ret;
1401
1402 dev_desc = rockchip_get_bootdev();
1403 if (!dev_desc) {
1404 printf("%s: dev_desc is NULL!\n", __func__);
1405 return -1;
1406 }
1407
1408 /* Load the kernel from the desired "boot" partition. */
1409 ret = part_get_info_by_name(dev_desc, ANDROID_PARTITION_BOOT,
1410 &boot_part_info);
1411 if (ret < 0) {
1412 printf("%s: failed to get boot part\n", __func__);
1413 return ret;
1414 }
1415
1416 ret = android_image_load(dev_desc, &boot_part_info,
1417 kernel_address, -1UL);
1418 if (ret < 0) {
1419 printf("Android avb boot failed, error %d.\n", ret);
1420 return ret;
1421 }
1422
1423 android_bootloader_boot_kernel(kernel_address);
1424
1425 /* TODO: If the kernel doesn't boot mark the selected slot as bad. */
1426 return -1;
1427 }
1428
android_boot_flow(unsigned long kernel_address)1429 int android_boot_flow(unsigned long kernel_address)
1430 {
1431 struct blk_desc *dev_desc;
1432 disk_partition_t boot_part_info;
1433 int ret;
1434
1435 dev_desc = rockchip_get_bootdev();
1436 if (!dev_desc) {
1437 printf("%s: dev_desc is NULL!\n", __func__);
1438 return -1;
1439 }
1440 /* Load the kernel from the desired "boot" partition. */
1441 ret = part_get_info_by_name(dev_desc, ANDROID_PARTITION_BOOT,
1442 &boot_part_info);
1443 if (ret < 0) {
1444 printf("%s: failed to get boot part\n", __func__);
1445 return ret;
1446 }
1447
1448 ret = android_image_load(dev_desc, &boot_part_info, kernel_address,
1449 -1UL);
1450 if (ret < 0)
1451 return ret;
1452
1453 android_bootloader_boot_kernel(kernel_address);
1454
1455 /* TODO: If the kernel doesn't boot mark the selected slot as bad. */
1456 return -1;
1457 }
1458