mirror of
https://github.com/AsahiLinux/u-boot
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22e7f1d108
This implements the following command: part type mmc 0:1 -> print partition type UUID part type mmc 0:1 uuid -> set environment variable to partition type UUID "part type" can be useful when writing a bootcmd which searches for a specific partition type to enable automatic discovery of partitions and their intended usage or mount point. Signed-off-by: Enric Balletbo i Serra <eballetbo@redhat.com> Reviewed-by: Simon Glass <sjg@chromium.org> [trini: Fix when CONFIG_PARTITION_TYPE_GUID is disabled and have the command check for "types" before "type"] Signed-off-by: Tom Rini <trini@konsulko.com>
284 lines
6.4 KiB
C
284 lines
6.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
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*
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* made from cmd_ext2, which was:
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*
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* (C) Copyright 2004
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* esd gmbh <www.esd-electronics.com>
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* Reinhard Arlt <reinhard.arlt@esd-electronics.com>
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*
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* made from cmd_reiserfs by
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*
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* (C) Copyright 2003 - 2004
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* Sysgo Real-Time Solutions, AG <www.elinos.com>
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* Pavel Bartusek <pba@sysgo.com>
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*/
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#include <common.h>
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#include <config.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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#include <vsprintf.h>
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enum cmd_part_info {
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CMD_PART_INFO_START = 0,
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CMD_PART_INFO_SIZE,
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CMD_PART_INFO_NUMBER
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};
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static int do_part_uuid(int argc, char *const argv[])
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{
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int part;
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struct blk_desc *dev_desc;
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struct disk_partition info;
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if (argc < 2)
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return CMD_RET_USAGE;
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if (argc > 3)
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return CMD_RET_USAGE;
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part = blk_get_device_part_str(argv[0], argv[1], &dev_desc, &info, 0);
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if (part < 0)
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return 1;
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if (argc > 2)
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env_set(argv[2], info.uuid);
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else
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printf("%s\n", info.uuid);
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return 0;
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}
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static int do_part_list(int argc, char *const argv[])
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{
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int ret;
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struct blk_desc *desc;
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char *var = NULL;
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bool bootable = false;
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int i;
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if (argc < 2)
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return CMD_RET_USAGE;
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if (argc > 2) {
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for (i = 2; i < argc ; i++) {
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if (argv[i][0] == '-') {
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if (!strcmp(argv[i], "-bootable")) {
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bootable = true;
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} else {
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printf("Unknown option %s\n", argv[i]);
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return CMD_RET_USAGE;
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}
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} else {
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var = argv[i];
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break;
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}
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}
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/* Loops should have been exited at the last argument, which
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* as it contained the variable */
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if (argc != i + 1)
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return CMD_RET_USAGE;
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}
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ret = blk_get_device_by_str(argv[0], argv[1], &desc);
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if (ret < 0)
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return 1;
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if (var != NULL) {
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int p;
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char str[3 * MAX_SEARCH_PARTITIONS] = { '\0', };
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struct disk_partition info;
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for (p = 1; p <= MAX_SEARCH_PARTITIONS; p++) {
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char t[5];
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int r = part_get_info(desc, p, &info);
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if (r != 0)
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continue;
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if (bootable && !info.bootable)
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continue;
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sprintf(t, "%s%x", str[0] ? " " : "", p);
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strcat(str, t);
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}
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env_set(var, str);
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return 0;
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}
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part_print(desc);
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return 0;
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}
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static int do_part_info(int argc, char *const argv[], enum cmd_part_info param)
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{
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struct blk_desc *desc;
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struct disk_partition info;
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char buf[512] = { 0 };
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char *endp;
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int part;
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int err;
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int ret;
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if (argc < 3)
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return CMD_RET_USAGE;
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if (argc > 4)
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return CMD_RET_USAGE;
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ret = blk_get_device_by_str(argv[0], argv[1], &desc);
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if (ret < 0)
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return 1;
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part = simple_strtoul(argv[2], &endp, 0);
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if (*endp == '\0') {
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err = part_get_info(desc, part, &info);
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if (err)
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return 1;
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} else {
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part = part_get_info_by_name(desc, argv[2], &info);
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if (part < 0)
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return 1;
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}
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switch (param) {
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case CMD_PART_INFO_START:
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snprintf(buf, sizeof(buf), LBAF, info.start);
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break;
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case CMD_PART_INFO_SIZE:
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snprintf(buf, sizeof(buf), LBAF, info.size);
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break;
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case CMD_PART_INFO_NUMBER:
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snprintf(buf, sizeof(buf), "0x%x", part);
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break;
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default:
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printf("** Unknown cmd_part_info value: %d\n", param);
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return 1;
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}
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if (argc > 3)
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env_set(argv[3], buf);
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else
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printf("%s\n", buf);
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return 0;
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}
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static int do_part_start(int argc, char *const argv[])
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{
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return do_part_info(argc, argv, CMD_PART_INFO_START);
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}
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static int do_part_size(int argc, char *const argv[])
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{
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return do_part_info(argc, argv, CMD_PART_INFO_SIZE);
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}
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static int do_part_number(int argc, char *const argv[])
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{
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return do_part_info(argc, argv, CMD_PART_INFO_NUMBER);
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}
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#ifdef CONFIG_PARTITION_TYPE_GUID
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static int do_part_type(int argc, char *const argv[])
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{
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int part;
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struct blk_desc *dev_desc;
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struct disk_partition info;
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if (argc < 2)
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return CMD_RET_USAGE;
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if (argc > 3)
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return CMD_RET_USAGE;
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part = blk_get_device_part_str(argv[0], argv[1], &dev_desc, &info, 0);
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if (part < 0)
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return 1;
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if (argc > 2)
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env_set(argv[2], info.type_guid);
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else
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printf("%s\n", info.type_guid);
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return 0;
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}
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#endif
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static int do_part_types(int argc, char * const argv[])
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{
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struct part_driver *drv = ll_entry_start(struct part_driver,
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part_driver);
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const int n_ents = ll_entry_count(struct part_driver, part_driver);
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struct part_driver *entry;
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int i = 0;
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puts("Supported partition tables");
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for (entry = drv; entry != drv + n_ents; entry++) {
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printf("%c %s", i ? ',' : ':', entry->name);
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i++;
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}
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if (!i)
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puts(": <none>");
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puts("\n");
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return CMD_RET_SUCCESS;
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}
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static int do_part(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[])
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{
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if (argc < 2)
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return CMD_RET_USAGE;
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if (!strcmp(argv[1], "uuid"))
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return do_part_uuid(argc - 2, argv + 2);
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else if (!strcmp(argv[1], "list"))
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return do_part_list(argc - 2, argv + 2);
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else if (!strcmp(argv[1], "start"))
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return do_part_start(argc - 2, argv + 2);
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else if (!strcmp(argv[1], "size"))
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return do_part_size(argc - 2, argv + 2);
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else if (!strcmp(argv[1], "number"))
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return do_part_number(argc - 2, argv + 2);
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else if (!strcmp(argv[1], "types"))
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return do_part_types(argc - 2, argv + 2);
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#ifdef CONFIG_PARTITION_TYPE_GUID
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else if (!strcmp(argv[1], "type"))
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return do_part_type(argc - 2, argv + 2);
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#endif
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return CMD_RET_USAGE;
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}
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U_BOOT_CMD(
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part, CONFIG_SYS_MAXARGS, 1, do_part,
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"disk partition related commands",
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"uuid <interface> <dev>:<part>\n"
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" - print partition UUID\n"
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"part uuid <interface> <dev>:<part> <varname>\n"
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" - set environment variable to partition UUID\n"
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"part list <interface> <dev>\n"
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" - print a device's partition table\n"
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"part list <interface> <dev> [flags] <varname>\n"
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" - set environment variable to the list of partitions\n"
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" flags can be -bootable (list only bootable partitions)\n"
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"part start <interface> <dev> <part> <varname>\n"
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" - set environment variable to the start of the partition (in blocks)\n"
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" part can be either partition number or partition name\n"
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"part size <interface> <dev> <part> <varname>\n"
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" - set environment variable to the size of the partition (in blocks)\n"
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" part can be either partition number or partition name\n"
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"part number <interface> <dev> <part> <varname>\n"
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" - set environment variable to the partition number using the partition name\n"
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" part must be specified as partition name\n"
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#ifdef CONFIG_PARTITION_TYPE_GUID
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"part type <interface> <dev>:<part>\n"
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" - print partition type\n"
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#endif
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"part type <interface> <dev>:<part> <varname>\n"
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" - set environment variable to partition type\n"
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"part types\n"
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" - list supported partition table types"
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);
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