diff options
Diffstat (limited to 'cmd/part.c')
| -rw-r--r-- | cmd/part.c | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/cmd/part.c b/cmd/part.c new file mode 100644 index 0000000..5599509 --- /dev/null +++ b/cmd/part.c @@ -0,0 +1,216 @@ +/* + * 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 <reinhard.arlt@esd-electronics.com> + * + * made from cmd_reiserfs by + * + * (C) Copyright 2003 - 2004 + * Sysgo Real-Time Solutions, AG <www.elinos.com> + * Pavel Bartusek <pba@sysgo.com> + * + * 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; + block_dev_desc_t *dev_desc; + disk_partition_t info; + + if (argc < 2) + return CMD_RET_USAGE; + if (argc > 3) + return CMD_RET_USAGE; + + part = get_device_and_partition(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; + block_dev_desc_t *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 = get_device(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 = get_partition_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; + } + + print_part(desc); + + return 0; +} + +static int do_part_start(int argc, char * const argv[]) +{ + block_dev_desc_t *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 = get_device(argv[0], argv[1], &desc); + if (ret < 0) + return 1; + + err = get_partition_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[]) +{ + block_dev_desc_t *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 = get_device(argv[0], argv[1], &desc); + if (ret < 0) + return 1; + + err = get_partition_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)" +); |