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

/*
 * Copyright (c) 2012, NVIDIA CORPORATION.  All rights reserved.
 *
 * made from cmd_ext2, which was:
 *
 * (C) Copyright 2004
 * esd gmbh <www.esd-electronics.com>
 * Reinhard Arlt <[email protected]>
 *
 * made from cmd_reiserfs by
 *
 * (C) Copyright 2003 - 2004
 * Sysgo Real-Time Solutions, AG <www.elinos.com>
 * Pavel Bartusek <[email protected]>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <config.h>
#include <command.h>
#include <part.h>
#include <vsprintf.h>

#ifndef CONFIG_PARTITION_UUIDS
#error CONFIG_PARTITION_UUIDS must be enabled for CONFIG_CMD_PART to be enabled
#endif

static int do_part_uuid(int argc, char * const argv[])
{
	int part;
	struct blk_desc *dev_desc;
	disk_partition_t info;

	if (argc < 2)
		return CMD_RET_USAGE;
	if (argc > 3)
		return CMD_RET_USAGE;

	part = blk_get_device_part_str(argv[0], argv[1], &dev_desc, &info, 0);
	if (part < 0)
		return 1;

	if (argc > 2)
		setenv(argv[2], info.uuid);
	else
		printf("%s\n", info.uuid);

	return 0;
}

static int do_part_list(int argc, char * const argv[])
{
	int ret;
	struct blk_desc *desc;
	char *var = NULL;
	bool bootable = false;
	int i;

	if (argc < 2)
		return CMD_RET_USAGE;

	if (argc > 2) {
		for (i = 2; i < argc ; i++) {
			if (argv[i][0] == '-') {
				if (!strcmp(argv[i], "-bootable")) {
					bootable = true;
				} else {
					printf("Unknown option %s\n", argv[i]);
					return CMD_RET_USAGE;
				}
			} else {
				var = argv[i];
				break;
			}
		}

		/* Loops should have been exited at the last argument, which
		 * as it contained the variable */
		if (argc != i + 1)
			return CMD_RET_USAGE;
	}

	ret = blk_get_device_by_str(argv[0], argv[1], &desc);
	if (ret < 0)
		return 1;

	if (var != NULL) {
		int p;
		char str[512] = { '\0', };
		disk_partition_t info;

		for (p = 1; p < 128; p++) {
			char t[5];
			int r = part_get_info(desc, p, &info);

			if (r != 0)
				continue;

			if (bootable && !info.bootable)
				continue;

			sprintf(t, "%s%x", str[0] ? " " : "", p);
			strcat(str, t);
		}
		setenv(var, str);
		return 0;
	}

	part_print(desc);

	return 0;
}

static int do_part_start(int argc, char * const argv[])
{
	struct blk_desc *desc;
	disk_partition_t info;
	char buf[512] = { 0 };
	int part;
	int err;
	int ret;

	if (argc < 3)
		return CMD_RET_USAGE;
	if (argc > 4)
		return CMD_RET_USAGE;

	part = simple_strtoul(argv[2], NULL, 0);

	ret = blk_get_device_by_str(argv[0], argv[1], &desc);
	if (ret < 0)
		return 1;

	err = part_get_info(desc, part, &info);
	if (err)
		return 1;

	snprintf(buf, sizeof(buf), LBAF, info.start);

	if (argc > 3)
		setenv(argv[3], buf);
	else
		printf("%s\n", buf);

	return 0;
}

static int do_part_size(int argc, char * const argv[])
{
	struct blk_desc *desc;
	disk_partition_t info;
	char buf[512] = { 0 };
	int part;
	int err;
	int ret;

	if (argc < 3)
		return CMD_RET_USAGE;
	if (argc > 4)
		return CMD_RET_USAGE;

	part = simple_strtoul(argv[2], NULL, 0);

	ret = blk_get_device_by_str(argv[0], argv[1], &desc);
	if (ret < 0)
		return 1;

	err = part_get_info(desc, part, &info);
	if (err)
		return 1;

	snprintf(buf, sizeof(buf), LBAF, info.size);

	if (argc > 3)
		setenv(argv[3], buf);
	else
		printf("%s\n", buf);

	return 0;
}

static int do_part(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
	if (argc < 2)
		return CMD_RET_USAGE;

	if (!strcmp(argv[1], "uuid"))
		return do_part_uuid(argc - 2, argv + 2);
	else if (!strcmp(argv[1], "list"))
		return do_part_list(argc - 2, argv + 2);
	else if (!strcmp(argv[1], "start"))
		return do_part_start(argc - 2, argv + 2);
	else if (!strcmp(argv[1], "size"))
		return do_part_size(argc - 2, argv + 2);

	return CMD_RET_USAGE;
}

U_BOOT_CMD(
	part,	CONFIG_SYS_MAXARGS,	1,	do_part,
	"disk partition related commands",
	"uuid <interface> <dev>:<part>\n"
	"    - print partition UUID\n"
	"part uuid <interface> <dev>:<part> <varname>\n"
	"    - set environment variable to partition UUID\n"
	"part list <interface> <dev>\n"
	"    - print a device's partition table\n"
	"part list <interface> <dev> [flags] <varname>\n"
	"    - set environment variable to the list of partitions\n"
	"      flags can be -bootable (list only bootable partitions)\n"
	"part start <interface> <dev> <part> <varname>\n"
	"    - set environment variable to the start of the partition (in blocks)\n"
	"part size <interface> <dev> <part> <varname>\n"
	"    - set environment variable to the size of the partition (in blocks)"
);
Commit	Line	Data
5cf41dcc SW	1	/*
	2	* Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
	3	*
	4	* made from cmd_ext2, which was:
	5	*
	6	* (C) Copyright 2004
	7	* esd gmbh <www.esd-electronics.com>
	8	* Reinhard Arlt <[email protected]>
	9	*
	10	* made from cmd_reiserfs by
	11	*
	12	* (C) Copyright 2003 - 2004
	13	* Sysgo Real-Time Solutions, AG <www.elinos.com>
	14	* Pavel Bartusek <[email protected]>
	15	*
1a459660	16	* SPDX-License-Identifier: GPL-2.0+
5cf41dcc SW	17	*/
	18
	19	#include <common.h>
	20	#include <config.h>
	21	#include <command.h>
	22	#include <part.h>
	23	#include <vsprintf.h>
	24
	25	#ifndef CONFIG_PARTITION_UUIDS
	26	#error CONFIG_PARTITION_UUIDS must be enabled for CONFIG_CMD_PART to be enabled
	27	#endif
	28
0e350f81	29	static int do_part_uuid(int argc, char * const argv[])
5cf41dcc SW	30	{
5cf41dcc SW	31	int part;
4101f687	32	struct blk_desc *dev_desc;
5cf41dcc SW	33	disk_partition_t info;
	34
	35	if (argc < 2)
	36	return CMD_RET_USAGE;
	37	if (argc > 3)
	38	return CMD_RET_USAGE;
	39
e35929e4	40	part = blk_get_device_part_str(argv[0], argv[1], &dev_desc, &info, 0);
5cf41dcc SW	41	if (part < 0)
	42	return 1;
	43
	44	if (argc > 2)
	45	setenv(argv[2], info.uuid);
	46	else
	47	printf("%s\n", info.uuid);
	48
	49	return 0;
	50	}
	51
0e350f81	52	static int do_part_list(int argc, char * const argv[])
5cf41dcc SW	53	{
5cf41dcc SW	54	int ret;
4101f687	55	struct blk_desc *desc;
0798d6fd SS	56	char *var = NULL;
	57	bool bootable = false;
	58	int i;
5cf41dcc	59
0798d6fd	60	if (argc < 2)
5cf41dcc SW	61	return CMD_RET_USAGE;
5cf41dcc SW	62
0798d6fd SS	63	if (argc > 2) {
	64	for (i = 2; i < argc ; i++) {
	65	if (argv[i][0] == '-') {
	66	if (!strcmp(argv[i], "-bootable")) {
	67	bootable = true;
	68	} else {
	69	printf("Unknown option %s\n", argv[i]);
	70	return CMD_RET_USAGE;
	71	}
	72	} else {
	73	var = argv[i];
	74	break;
	75	}
	76	}
	77
	78	/* Loops should have been exited at the last argument, which
	79	* as it contained the variable */
	80	if (argc != i + 1)
	81	return CMD_RET_USAGE;
	82	}
	83
ebac37cf	84	ret = blk_get_device_by_str(argv[0], argv[1], &desc);
5cf41dcc SW	85	if (ret < 0)
	86	return 1;
	87
0798d6fd	88	if (var != NULL) {
e86df6ef	89	int p;
0798d6fd	90	char str[512] = { '\0', };
a78f78eb	91	disk_partition_t info;
e86df6ef SS	92
e86df6ef SS	93	for (p = 1; p < 128; p++) {
0798d6fd	94	char t[5];
3e8bd469	95	int r = part_get_info(desc, p, &info);
e86df6ef	96
0798d6fd SS	97	if (r != 0)
	98	continue;
	99
	100	if (bootable && !info.bootable)
	101	continue;
	102
653447b4	103	sprintf(t, "%s%x", str[0] ? " " : "", p);
0798d6fd	104	strcat(str, t);
e86df6ef	105	}
0798d6fd	106	setenv(var, str);
e86df6ef SS	107	return 0;
	108	}
	109
3e8bd469	110	part_print(desc);
5cf41dcc SW	111
	112	return 0;
	113	}
	114
8607c4f1 PK	115	static int do_part_start(int argc, char * const argv[])
8607c4f1 PK	116	{
4101f687	117	struct blk_desc *desc;
8607c4f1 PK	118	disk_partition_t info;
	119	char buf[512] = { 0 };
	120	int part;
	121	int err;
	122	int ret;
	123
	124	if (argc < 3)
	125	return CMD_RET_USAGE;
	126	if (argc > 4)
	127	return CMD_RET_USAGE;
	128
	129	part = simple_strtoul(argv[2], NULL, 0);
	130
ebac37cf	131	ret = blk_get_device_by_str(argv[0], argv[1], &desc);
8607c4f1 PK	132	if (ret < 0)
	133	return 1;
	134
3e8bd469	135	err = part_get_info(desc, part, &info);
8607c4f1 PK	136	if (err)
	137	return 1;
	138
	139	snprintf(buf, sizeof(buf), LBAF, info.start);
	140
	141	if (argc > 3)
	142	setenv(argv[3], buf);
	143	else
	144	printf("%s\n", buf);
	145
	146	return 0;
	147	}
	148
	149	static int do_part_size(int argc, char * const argv[])
	150	{
4101f687	151	struct blk_desc *desc;
8607c4f1 PK	152	disk_partition_t info;
	153	char buf[512] = { 0 };
	154	int part;
	155	int err;
	156	int ret;
	157
	158	if (argc < 3)
	159	return CMD_RET_USAGE;
	160	if (argc > 4)
	161	return CMD_RET_USAGE;
	162
	163	part = simple_strtoul(argv[2], NULL, 0);
	164
ebac37cf	165	ret = blk_get_device_by_str(argv[0], argv[1], &desc);
8607c4f1 PK	166	if (ret < 0)
	167	return 1;
	168
3e8bd469	169	err = part_get_info(desc, part, &info);
8607c4f1 PK	170	if (err)
	171	return 1;
	172
	173	snprintf(buf, sizeof(buf), LBAF, info.size);
	174
	175	if (argc > 3)
	176	setenv(argv[3], buf);
	177	else
	178	printf("%s\n", buf);
	179
	180	return 0;
	181	}
	182
0e350f81	183	static int do_part(cmd_tbl_t cmdtp, int flag, int argc, char const argv[])
5cf41dcc SW	184	{
	185	if (argc < 2)
	186	return CMD_RET_USAGE;
	187
	188	if (!strcmp(argv[1], "uuid"))
	189	return do_part_uuid(argc - 2, argv + 2);
	190	else if (!strcmp(argv[1], "list"))
	191	return do_part_list(argc - 2, argv + 2);
8607c4f1 PK	192	else if (!strcmp(argv[1], "start"))
	193	return do_part_start(argc - 2, argv + 2);
	194	else if (!strcmp(argv[1], "size"))
	195	return do_part_size(argc - 2, argv + 2);
5cf41dcc SW	196
	197	return CMD_RET_USAGE;
	198	}
	199
	200	U_BOOT_CMD(
0798d6fd	201	part, CONFIG_SYS_MAXARGS, 1, do_part,
5cf41dcc	202	"disk partition related commands",
8ca584ec	203	"uuid <interface> <dev>:<part>\n"
5cf41dcc SW	204	" - print partition UUID\n"
	205	"part uuid <interface> <dev>:<part> <varname>\n"
	206	" - set environment variable to partition UUID\n"
	207	"part list <interface> <dev>\n"
e86df6ef	208	" - print a device's partition table\n"
0798d6fd SS	209	"part list <interface> <dev> [flags] <varname>\n"
0798d6fd SS	210	" - set environment variable to the list of partitions\n"
8607c4f1 PK	211	" flags can be -bootable (list only bootable partitions)\n"
	212	"part start <interface> <dev> <part> <varname>\n"
	213	" - set environment variable to the start of the partition (in blocks)\n"
	214	"part size <interface> <dev> <part> <varname>\n"
	215	" - set environment variable to the size of the partition (in blocks)"
5cf41dcc	216	);