diff options
Diffstat (limited to 'cmd')
| -rw-r--r-- | cmd/Kconfig | 17 | ||||
| -rw-r--r-- | cmd/Makefile | 1 | ||||
| -rw-r--r-- | cmd/ab_select.c | 52 | ||||
| -rw-r--r-- | cmd/bcb.c | 68 | ||||
| -rw-r--r-- | cmd/part.c | 16 |
5 files changed, 117 insertions, 37 deletions
diff --git a/cmd/Kconfig b/cmd/Kconfig index 175c6ad9e3..9e66cc110d 100644 --- a/cmd/Kconfig +++ b/cmd/Kconfig @@ -735,7 +735,7 @@ config CMD_FASTBOOT Android devices. Fastboot requires either the network stack enabled or support for acting as a USB device. - See doc/README.android-fastboot for more information. + See doc/android/fastboot.txt for more information. config CMD_FDC bool "fdcboot - Boot from floppy device" @@ -1198,6 +1198,21 @@ config CMD_SETEXPR endmenu +menu "Android support commands" + +config CMD_AB_SELECT + bool "ab_select" + default n + depends on ANDROID_AB + help + On Android devices with more than one boot slot (multiple copies of + the kernel and system images) this provides a command to select which + slot should be used to boot from and register the boot attempt. This + is used by the new A/B update model where one slot is updated in the + background while running from the other slot. + +endmenu + if NET menuconfig CMD_NET diff --git a/cmd/Makefile b/cmd/Makefile index 0aa3741453..43a6b0ee21 100644 --- a/cmd/Makefile +++ b/cmd/Makefile @@ -12,6 +12,7 @@ obj-y += version.o # command obj-$(CONFIG_CMD_AES) += aes.o +obj-$(CONFIG_CMD_AB_SELECT) += ab_select.o obj-$(CONFIG_CMD_ADC) += adc.o obj-$(CONFIG_CMD_ARMFLASH) += armflash.o obj-y += blk_common.o diff --git a/cmd/ab_select.c b/cmd/ab_select.c new file mode 100644 index 0000000000..7c8f2ee8eb --- /dev/null +++ b/cmd/ab_select.c @@ -0,0 +1,52 @@ +// SPDX-License-Identifier: BSD-2-Clause +/* + * Copyright (C) 2017 The Android Open Source Project + */ + +#include <android_ab.h> +#include <command.h> + +static int do_ab_select(cmd_tbl_t *cmdtp, int flag, int argc, + char * const argv[]) +{ + int ret; + struct blk_desc *dev_desc; + disk_partition_t part_info; + char slot[2]; + + if (argc != 4) + return CMD_RET_USAGE; + + /* Lookup the "misc" partition from argv[2] and argv[3] */ + if (part_get_info_by_dev_and_name_or_num(argv[2], argv[3], + &dev_desc, &part_info) < 0) { + return CMD_RET_FAILURE; + } + + ret = ab_select_slot(dev_desc, &part_info); + if (ret < 0) { + printf("Android boot failed, error %d.\n", ret); + return CMD_RET_FAILURE; + } + + /* Android standard slot names are 'a', 'b', ... */ + slot[0] = BOOT_SLOT_NAME(ret); + slot[1] = '\0'; + env_set(argv[1], slot); + printf("ANDROID: Booting slot: %s\n", slot); + return CMD_RET_SUCCESS; +} + +U_BOOT_CMD(ab_select, 4, 0, do_ab_select, + "Select the slot used to boot from and register the boot attempt.", + "<slot_var_name> <interface> <dev[:part|#part_name]>\n" + " - Load the slot metadata from the partition 'part' on\n" + " device type 'interface' instance 'dev' and store the active\n" + " slot in the 'slot_var_name' variable. This also updates the\n" + " Android slot metadata with a boot attempt, which can cause\n" + " successive calls to this function to return a different result\n" + " if the returned slot runs out of boot attempts.\n" + " - If 'part_name' is passed, preceded with a # instead of :, the\n" + " partition name whose label is 'part_name' will be looked up in\n" + " the partition table. This is commonly the \"misc\" partition.\n" +); @@ -24,17 +24,17 @@ static struct bootloader_message bcb = { { 0 } }; static int bcb_cmd_get(char *cmd) { - if (!strncmp(cmd, "load", sizeof("load"))) + if (!strcmp(cmd, "load")) return BCB_CMD_LOAD; - if (!strncmp(cmd, "set", sizeof("set"))) + if (!strcmp(cmd, "set")) return BCB_CMD_FIELD_SET; - if (!strncmp(cmd, "clear", sizeof("clear"))) + if (!strcmp(cmd, "clear")) return BCB_CMD_FIELD_CLEAR; - if (!strncmp(cmd, "test", sizeof("test"))) + if (!strcmp(cmd, "test")) return BCB_CMD_FIELD_TEST; - if (!strncmp(cmd, "store", sizeof("store"))) + if (!strcmp(cmd, "store")) return BCB_CMD_STORE; - if (!strncmp(cmd, "dump", sizeof("dump"))) + if (!strcmp(cmd, "dump")) return BCB_CMD_FIELD_DUMP; else return -1; @@ -46,9 +46,6 @@ static int bcb_is_misused(int argc, char *const argv[]) switch (cmd) { case BCB_CMD_LOAD: - if (argc != 3) - goto err; - break; case BCB_CMD_FIELD_SET: if (argc != 3) goto err; @@ -86,23 +83,23 @@ err: return -1; } -static int bcb_field_get(char *name, char **field, int *size) +static int bcb_field_get(char *name, char **fieldp, int *sizep) { - if (!strncmp(name, "command", sizeof("command"))) { - *field = bcb.command; - *size = sizeof(bcb.command); - } else if (!strncmp(name, "status", sizeof("status"))) { - *field = bcb.status; - *size = sizeof(bcb.status); - } else if (!strncmp(name, "recovery", sizeof("recovery"))) { - *field = bcb.recovery; - *size = sizeof(bcb.recovery); - } else if (!strncmp(name, "stage", sizeof("stage"))) { - *field = bcb.stage; - *size = sizeof(bcb.stage); - } else if (!strncmp(name, "reserved", sizeof("reserved"))) { - *field = bcb.reserved; - *size = sizeof(bcb.reserved); + if (!strcmp(name, "command")) { + *fieldp = bcb.command; + *sizep = sizeof(bcb.command); + } else if (!strcmp(name, "status")) { + *fieldp = bcb.status; + *sizep = sizeof(bcb.status); + } else if (!strcmp(name, "recovery")) { + *fieldp = bcb.recovery; + *sizep = sizeof(bcb.recovery); + } else if (!strcmp(name, "stage")) { + *fieldp = bcb.stage; + *sizep = sizeof(bcb.stage); + } else if (!strcmp(name, "reserved")) { + *fieldp = bcb.reserved; + *sizep = sizeof(bcb.reserved); } else { printf("Error: Unknown bcb field '%s'\n", name); return -1; @@ -111,8 +108,8 @@ static int bcb_field_get(char *name, char **field, int *size) return 0; } -static int -do_bcb_load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) +static int do_bcb_load(cmd_tbl_t *cmdtp, int flag, int argc, + char * const argv[]) { struct blk_desc *desc; disk_partition_t info; @@ -122,28 +119,28 @@ do_bcb_load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) ret = blk_get_device_by_str("mmc", argv[1], &desc); if (ret < 0) - goto err_1; + goto err_read_fail; part = simple_strtoul(argv[2], &endp, 0); if (*endp == '\0') { ret = part_get_info(desc, part, &info); if (ret) - goto err_1; + goto err_read_fail; } else { part = part_get_info_by_name(desc, argv[2], &info); if (part < 0) { ret = part; - goto err_1; + goto err_read_fail; } } cnt = DIV_ROUND_UP(sizeof(struct bootloader_message), info.blksz); if (cnt > info.size) - goto err_2; + goto err_too_small; if (blk_dread(desc, info.start, cnt, &bcb) != cnt) { ret = -EIO; - goto err_1; + goto err_read_fail; } bcb_dev = desc->devnum; @@ -151,10 +148,10 @@ do_bcb_load(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) debug("%s: Loaded from mmc %d:%d\n", __func__, bcb_dev, bcb_part); return CMD_RET_SUCCESS; -err_1: +err_read_fail: printf("Error: mmc %s:%s read failed (%d)\n", argv[1], argv[2], ret); goto err; -err_2: +err_too_small: printf("Error: mmc %s:%s too small!", argv[1], argv[2]); goto err; err: @@ -307,7 +304,8 @@ static int do_bcb(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) return CMD_RET_USAGE; if (bcb_is_misused(argc, argv)) { - /* We try to improve the user experience by reporting the + /* + * We try to improve the user experience by reporting the * root-cause of misusage, so don't return CMD_RET_USAGE, * since the latter prints out the full-blown help text */ diff --git a/cmd/part.c b/cmd/part.c index bfb6488b0f..653e13ced1 100644 --- a/cmd/part.c +++ b/cmd/part.c @@ -24,6 +24,7 @@ enum cmd_part_info { CMD_PART_INFO_START = 0, CMD_PART_INFO_SIZE, + CMD_PART_INFO_NUMBER }; static int do_part_uuid(int argc, char * const argv[]) @@ -149,6 +150,9 @@ static int do_part_info(int argc, char * const argv[], enum cmd_part_info param) case CMD_PART_INFO_SIZE: snprintf(buf, sizeof(buf), LBAF, info.size); break; + case CMD_PART_INFO_NUMBER: + snprintf(buf, sizeof(buf), "%d", part); + break; default: printf("** Unknown cmd_part_info value: %d\n", param); return 1; @@ -172,6 +176,11 @@ static int do_part_size(int argc, char * const argv[]) return do_part_info(argc, argv, CMD_PART_INFO_SIZE); } +static int do_part_number(int argc, char * const argv[]) +{ + return do_part_info(argc, argv, CMD_PART_INFO_NUMBER); +} + static int do_part(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { if (argc < 2) @@ -185,6 +194,8 @@ static int do_part(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) return do_part_start(argc - 2, argv + 2); else if (!strcmp(argv[1], "size")) return do_part_size(argc - 2, argv + 2); + else if (!strcmp(argv[1], "number")) + return do_part_number(argc - 2, argv + 2); return CMD_RET_USAGE; } @@ -206,5 +217,8 @@ U_BOOT_CMD( " part can be either partition number or partition name\n" "part size <interface> <dev> <part> <varname>\n" " - set environment variable to the size of the partition (in blocks)\n" - " part can be either partition number or partition name" + " part can be either partition number or partition name\n" + "part number <interface> <dev> <part> <varname>\n" + " - set environment variable to the partition number using the partition name\n" + " part must be specified as partition name" ); |