[J-u-boot.git] / cmd / ab_select.c

// 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"
);
Commit	Line	Data
17030c7c RT	1	// SPDX-License-Identifier: BSD-2-Clause
	2	/*
	3	* Copyright (C) 2017 The Android Open Source Project
	4	*/
	5
	6	#include <android_ab.h>
	7	#include <command.h>
	8
	9	static int do_ab_select(cmd_tbl_t *cmdtp, int flag, int argc,
	10	char * const argv[])
	11	{
	12	int ret;
	13	struct blk_desc *dev_desc;
	14	disk_partition_t part_info;
	15	char slot[2];
	16
	17	if (argc != 4)
	18	return CMD_RET_USAGE;
	19
	20	/* Lookup the "misc" partition from argv[2] and argv[3] */
	21	if (part_get_info_by_dev_and_name_or_num(argv[2], argv[3],
	22	&dev_desc, &part_info) < 0) {
	23	return CMD_RET_FAILURE;
	24	}
	25
	26	ret = ab_select_slot(dev_desc, &part_info);
	27	if (ret < 0) {
	28	printf("Android boot failed, error %d.\n", ret);
	29	return CMD_RET_FAILURE;
	30	}
	31
	32	/* Android standard slot names are 'a', 'b', ... */
	33	slot[0] = BOOT_SLOT_NAME(ret);
	34	slot[1] = '\0';
	35	env_set(argv[1], slot);
	36	printf("ANDROID: Booting slot: %s\n", slot);
	37	return CMD_RET_SUCCESS;
	38	}
	39
	40	U_BOOT_CMD(ab_select, 4, 0, do_ab_select,
	41	"Select the slot used to boot from and register the boot attempt.",
	42	"<slot_var_name> <interface> <dev[:part\|#part_name]>\n"
	43	" - Load the slot metadata from the partition 'part' on\n"
	44	" device type 'interface' instance 'dev' and store the active\n"
	45	" slot in the 'slot_var_name' variable. This also updates the\n"
	46	" Android slot metadata with a boot attempt, which can cause\n"
	47	" successive calls to this function to return a different result\n"
	48	" if the returned slot runs out of boot attempts.\n"
	49	" - If 'part_name' is passed, preceded with a # instead of :, the\n"
	50	" partition name whose label is 'part_name' will be looked up in\n"
	51	" the partition table. This is commonly the \"misc\" partition.\n"
	52	);