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03de305ec4
As part of bringing the master branch back in to next, we need to allow for all of these changes to exist here. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
68 lines
2.1 KiB
C
68 lines
2.1 KiB
C
// SPDX-License-Identifier: BSD-2-Clause
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/*
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* Copyright (C) 2017 The Android Open Source Project
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*/
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#include <android_ab.h>
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#include <command.h>
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#include <env.h>
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#include <part.h>
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static int do_ab_select(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[])
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{
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int ret;
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struct blk_desc *dev_desc;
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struct disk_partition part_info;
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char slot[2];
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bool dec_tries = true;
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if (argc < 4)
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return CMD_RET_USAGE;
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for (int i = 4; i < argc; i++) {
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if (strcmp(argv[i], "--no-dec") == 0) {
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dec_tries = false;
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} else {
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return CMD_RET_USAGE;
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}
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}
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/* Lookup the "misc" partition from argv[2] and argv[3] */
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if (part_get_info_by_dev_and_name_or_num(argv[2], argv[3],
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&dev_desc, &part_info,
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false) < 0) {
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return CMD_RET_FAILURE;
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}
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ret = ab_select_slot(dev_desc, &part_info, dec_tries);
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if (ret < 0) {
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printf("Android boot failed, error %d.\n", ret);
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return CMD_RET_FAILURE;
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}
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/* Android standard slot names are 'a', 'b', ... */
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slot[0] = BOOT_SLOT_NAME(ret);
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slot[1] = '\0';
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env_set(argv[1], slot);
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printf("ANDROID: Booting slot: %s\n", slot);
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return CMD_RET_SUCCESS;
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}
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U_BOOT_CMD(ab_select, 5, 0, do_ab_select,
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"Select the slot used to boot from and register the boot attempt.",
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"<slot_var_name> <interface> <dev[:part|#part_name]> [--no-dec]\n"
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" - Load the slot metadata from the partition 'part' on\n"
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" device type 'interface' instance 'dev' and store the active\n"
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" slot in the 'slot_var_name' variable. This also updates the\n"
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" Android slot metadata with a boot attempt, which can cause\n"
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" successive calls to this function to return a different result\n"
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" if the returned slot runs out of boot attempts.\n"
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" - If 'part_name' is passed, preceded with a # instead of :, the\n"
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" partition name whose label is 'part_name' will be looked up in\n"
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" the partition table. This is commonly the \"misc\" partition.\n"
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" - If '--no-dec' is set, the number of tries remaining will not\n"
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" decremented for the selected boot slot\n"
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);
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