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- // 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"
- );
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