projects / J-u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| 17030c7c RT |
1 | // SPDX-License-Identifier: BSD-2-Clause |
| 2 | /* | |
| 3 | * Copyright (C) 2017 The Android Open Source Project | |
| 4 | */ | |
| 5 | ||
| e6f6f9e6 | 6 | #include <common.h> |
| 17030c7c RT |
7 | #include <android_ab.h> |
| 8 | #include <command.h> | |
| 09140113 | 9 | #include <env.h> |
| e6f6f9e6 | 10 | #include <part.h> |
| 17030c7c | 11 | |
| 09140113 SG |
12 | static int do_ab_select(struct cmd_tbl *cmdtp, int flag, int argc, |
| 13 | char *const argv[]) | |
| 17030c7c RT |
14 | { |
| 15 | int ret; | |
| 16 | struct blk_desc *dev_desc; | |
| 0528979f | 17 | struct disk_partition part_info; |
| 17030c7c | 18 | char slot[2]; |
| 22cdb3f0 | 19 | bool dec_tries = true; |
| 17030c7c | 20 | |
| 22cdb3f0 | 21 | if (argc < 4) |
| 17030c7c RT |
22 | return CMD_RET_USAGE; |
| 23 | ||
| 22cdb3f0 JW |
24 | for (int i = 4; i < argc; i++) { |
| 25 | if (strcmp(argv[i], "--no-dec") == 0) { | |
| 26 | dec_tries = false; | |
| 27 | } else { | |
| 28 | return CMD_RET_USAGE; | |
| 29 | } | |
| 30 | } | |
| 31 | ||
| 17030c7c RT |
32 | /* Lookup the "misc" partition from argv[2] and argv[3] */ |
| 33 | if (part_get_info_by_dev_and_name_or_num(argv[2], argv[3], | |
| 9f7bb282 SA |
34 | &dev_desc, &part_info, |
| 35 | false) < 0) { | |
| 17030c7c RT |
36 | return CMD_RET_FAILURE; |
| 37 | } | |
| 38 | ||
| 22cdb3f0 JW |
39 | |
| 40 | ret = ab_select_slot(dev_desc, &part_info, dec_tries); | |
| 17030c7c RT |
41 | if (ret < 0) { |
| 42 | printf("Android boot failed, error %d.\n", ret); | |
| 43 | return CMD_RET_FAILURE; | |
| 44 | } | |
| 45 | ||
| 46 | /* Android standard slot names are 'a', 'b', ... */ | |
| 47 | slot[0] = BOOT_SLOT_NAME(ret); | |
| 48 | slot[1] = '\0'; | |
| 49 | env_set(argv[1], slot); | |
| 50 | printf("ANDROID: Booting slot: %s\n", slot); | |
| 51 | return CMD_RET_SUCCESS; | |
| 52 | } | |
| 53 | ||
| 22cdb3f0 | 54 | U_BOOT_CMD(ab_select, 5, 0, do_ab_select, |
| 17030c7c | 55 | "Select the slot used to boot from and register the boot attempt.", |
| 22cdb3f0 | 56 | "<slot_var_name> <interface> <dev[:part|#part_name]> [--no-dec]\n" |
| 17030c7c RT |
57 | " - Load the slot metadata from the partition 'part' on\n" |
| 58 | " device type 'interface' instance 'dev' and store the active\n" | |
| 59 | " slot in the 'slot_var_name' variable. This also updates the\n" | |
| 60 | " Android slot metadata with a boot attempt, which can cause\n" | |
| 61 | " successive calls to this function to return a different result\n" | |
| 62 | " if the returned slot runs out of boot attempts.\n" | |
| 63 | " - If 'part_name' is passed, preceded with a # instead of :, the\n" | |
| 64 | " partition name whose label is 'part_name' will be looked up in\n" | |
| 65 | " the partition table. This is commonly the \"misc\" partition.\n" | |
| 22cdb3f0 JW |
66 | " - If '--no-dec' is set, the number of tries remaining will not\n" |
| 67 | " decremented for the selected boot slot\n" | |
| 17030c7c | 68 | ); |