| // SPDX-License-Identifier: GPL-2.0+ |
| /* |
| * UEFI Shell-like command |
| * |
| * Copyright (c) 2018 AKASHI Takahiro, Linaro Limited |
| */ |
| |
| #include <charset.h> |
| #include <common.h> |
| #include <command.h> |
| #include <efi_loader.h> |
| #include <environment.h> |
| #include <exports.h> |
| #include <malloc.h> |
| #include <search.h> |
| #include <linux/ctype.h> |
| |
| #define BS systab.boottime |
| #define RT systab.runtime |
| |
| /** |
| * efi_get_device_handle_info() - get information of UEFI device |
| * |
| * @handle: Handle of UEFI device |
| * @dev_path_text: Pointer to text of device path |
| * Return: 0 on success, -1 on failure |
| * |
| * Currently return a formatted text of device path. |
| */ |
| static int efi_get_device_handle_info(efi_handle_t handle, u16 **dev_path_text) |
| { |
| struct efi_device_path *dp; |
| efi_status_t ret; |
| |
| ret = EFI_CALL(BS->open_protocol(handle, &efi_guid_device_path, |
| (void **)&dp, NULL /* FIXME */, NULL, |
| EFI_OPEN_PROTOCOL_GET_PROTOCOL)); |
| if (ret == EFI_SUCCESS) { |
| *dev_path_text = efi_dp_str(dp); |
| return 0; |
| } else { |
| return -1; |
| } |
| } |
| |
| #define EFI_HANDLE_WIDTH ((int)sizeof(efi_handle_t) * 2) |
| |
| static const char spc[] = " "; |
| static const char sep[] = "================"; |
| |
| /** |
| * do_efi_show_devices() - show UEFI devices |
| * |
| * @cmdtp: Command table |
| * @flag: Command flag |
| * @argc: Number of arguments |
| * @argv: Argument array |
| * Return: CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure |
| * |
| * Implement efidebug "devices" sub-command. |
| * Show all UEFI devices and their information. |
| */ |
| static int do_efi_show_devices(cmd_tbl_t *cmdtp, int flag, |
| int argc, char * const argv[]) |
| { |
| efi_handle_t *handles; |
| efi_uintn_t num, i; |
| u16 *dev_path_text; |
| efi_status_t ret; |
| |
| ret = EFI_CALL(BS->locate_handle_buffer(ALL_HANDLES, NULL, NULL, |
| &num, &handles)); |
| if (ret != EFI_SUCCESS) |
| return CMD_RET_FAILURE; |
| |
| if (!num) |
| return CMD_RET_SUCCESS; |
| |
| printf("Device%.*s Device Path\n", EFI_HANDLE_WIDTH - 6, spc); |
| printf("%.*s ====================\n", EFI_HANDLE_WIDTH, sep); |
| for (i = 0; i < num; i++) { |
| if (!efi_get_device_handle_info(handles[i], &dev_path_text)) { |
| printf("%p %ls\n", handles[i], dev_path_text); |
| efi_free_pool(dev_path_text); |
| } |
| } |
| |
| EFI_CALL(BS->free_pool(handles)); |
| |
| return CMD_RET_SUCCESS; |
| } |
| |
| /** |
| * efi_get_driver_handle_info() - get information of UEFI driver |
| * |
| * @handle: Handle of UEFI device |
| * @driver_name: Driver name |
| * @image_path: Pointer to text of device path |
| * Return: 0 on success, -1 on failure |
| * |
| * Currently return no useful information as all UEFI drivers are |
| * built-in.. |
| */ |
| static int efi_get_driver_handle_info(efi_handle_t handle, u16 **driver_name, |
| u16 **image_path) |
| { |
| struct efi_handler *handler; |
| struct efi_loaded_image *image; |
| efi_status_t ret; |
| |
| /* |
| * driver name |
| * TODO: support EFI_COMPONENT_NAME2_PROTOCOL |
| */ |
| *driver_name = NULL; |
| |
| /* image name */ |
| ret = efi_search_protocol(handle, &efi_guid_loaded_image, &handler); |
| if (ret != EFI_SUCCESS) { |
| *image_path = NULL; |
| return 0; |
| } |
| |
| image = handler->protocol_interface; |
| *image_path = efi_dp_str(image->file_path); |
| |
| return 0; |
| } |
| |
| /** |
| * do_efi_show_drivers() - show UEFI drivers |
| * |
| * @cmdtp: Command table |
| * @flag: Command flag |
| * @argc: Number of arguments |
| * @argv: Argument array |
| * Return: CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure |
| * |
| * Implement efidebug "drivers" sub-command. |
| * Show all UEFI drivers and their information. |
| */ |
| static int do_efi_show_drivers(cmd_tbl_t *cmdtp, int flag, |
| int argc, char * const argv[]) |
| { |
| efi_handle_t *handles; |
| efi_uintn_t num, i; |
| u16 *driver_name, *image_path_text; |
| efi_status_t ret; |
| |
| ret = EFI_CALL(BS->locate_handle_buffer( |
| BY_PROTOCOL, &efi_guid_driver_binding_protocol, |
| NULL, &num, &handles)); |
| if (ret != EFI_SUCCESS) |
| return CMD_RET_FAILURE; |
| |
| if (!num) |
| return CMD_RET_SUCCESS; |
| |
| printf("Driver%.*s Name Image Path\n", |
| EFI_HANDLE_WIDTH - 6, spc); |
| printf("%.*s ==================== ====================\n", |
| EFI_HANDLE_WIDTH, sep); |
| for (i = 0; i < num; i++) { |
| if (!efi_get_driver_handle_info(handles[i], &driver_name, |
| &image_path_text)) { |
| if (image_path_text) |
| printf("%p %-20ls %ls\n", handles[i], |
| driver_name, image_path_text); |
| else |
| printf("%p %-20ls <built-in>\n", |
| handles[i], driver_name); |
| EFI_CALL(BS->free_pool(driver_name)); |
| EFI_CALL(BS->free_pool(image_path_text)); |
| } |
| } |
| |
| EFI_CALL(BS->free_pool(handles)); |
| |
| return CMD_RET_SUCCESS; |
| } |
| |
| static const struct { |
| const char *text; |
| const efi_guid_t guid; |
| } guid_list[] = { |
| { |
| "Device Path", |
| DEVICE_PATH_GUID, |
| }, |
| { |
| "Device Path To Text", |
| EFI_DEVICE_PATH_TO_TEXT_PROTOCOL_GUID, |
| }, |
| { |
| "Device Path Utilities", |
| EFI_DEVICE_PATH_UTILITIES_PROTOCOL_GUID, |
| }, |
| { |
| "Unicode Collation 2", |
| EFI_UNICODE_COLLATION_PROTOCOL2_GUID, |
| }, |
| { |
| "Driver Binding", |
| EFI_DRIVER_BINDING_PROTOCOL_GUID, |
| }, |
| { |
| "Simple Text Input", |
| EFI_SIMPLE_TEXT_INPUT_PROTOCOL_GUID, |
| }, |
| { |
| "Simple Text Input Ex", |
| EFI_SIMPLE_TEXT_INPUT_EX_PROTOCOL_GUID, |
| }, |
| { |
| "Simple Text Output", |
| EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL_GUID, |
| }, |
| { |
| "Block IO", |
| BLOCK_IO_GUID, |
| }, |
| { |
| "Simple File System", |
| EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_GUID, |
| }, |
| { |
| "Loaded Image", |
| LOADED_IMAGE_PROTOCOL_GUID, |
| }, |
| { |
| "GOP", |
| EFI_GOP_GUID, |
| }, |
| }; |
| |
| /** |
| * get_guid_text - get string of protocol guid |
| * @guid: Protocol guid |
| * Return: String |
| * |
| * Return string for display to represent the protocol. |
| */ |
| static const char *get_guid_text(const efi_guid_t *guid) |
| { |
| int i; |
| |
| for (i = 0; i < ARRAY_SIZE(guid_list); i++) |
| if (!guidcmp(&guid_list[i].guid, guid)) |
| break; |
| |
| if (i != ARRAY_SIZE(guid_list)) |
| return guid_list[i].text; |
| else |
| return NULL; |
| } |
| |
| /** |
| * do_efi_show_handles() - show UEFI handles |
| * |
| * @cmdtp: Command table |
| * @flag: Command flag |
| * @argc: Number of arguments |
| * @argv: Argument array |
| * Return: CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure |
| * |
| * Implement efidebug "dh" sub-command. |
| * Show all UEFI handles and their information, currently all protocols |
| * added to handle. |
| */ |
| static int do_efi_show_handles(cmd_tbl_t *cmdtp, int flag, |
| int argc, char * const argv[]) |
| { |
| efi_handle_t *handles; |
| efi_guid_t **guid; |
| efi_uintn_t num, count, i, j; |
| const char *guid_text; |
| efi_status_t ret; |
| |
| ret = EFI_CALL(BS->locate_handle_buffer(ALL_HANDLES, NULL, NULL, |
| &num, &handles)); |
| if (ret != EFI_SUCCESS) |
| return CMD_RET_FAILURE; |
| |
| if (!num) |
| return CMD_RET_SUCCESS; |
| |
| printf("Handle%.*s Protocols\n", EFI_HANDLE_WIDTH - 6, spc); |
| printf("%.*s ====================\n", EFI_HANDLE_WIDTH, sep); |
| for (i = 0; i < num; i++) { |
| printf("%p", handles[i]); |
| ret = EFI_CALL(BS->protocols_per_handle(handles[i], &guid, |
| &count)); |
| if (ret || !count) { |
| putc('\n'); |
| continue; |
| } |
| |
| for (j = 0; j < count; j++) { |
| if (j) |
| printf(", "); |
| else |
| putc(' '); |
| |
| guid_text = get_guid_text(guid[j]); |
| if (guid_text) |
| puts(guid_text); |
| else |
| printf("%pUl", guid[j]); |
| } |
| putc('\n'); |
| } |
| |
| EFI_CALL(BS->free_pool(handles)); |
| |
| return CMD_RET_SUCCESS; |
| } |
| |
| /** |
| * do_efi_show_images() - show UEFI images |
| * |
| * @cmdtp: Command table |
| * @flag: Command flag |
| * @argc: Number of arguments |
| * @argv: Argument array |
| * Return: CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure |
| * |
| * Implement efidebug "images" sub-command. |
| * Show all UEFI loaded images and their information. |
| */ |
| static int do_efi_show_images(cmd_tbl_t *cmdtp, int flag, |
| int argc, char * const argv[]) |
| { |
| efi_print_image_infos(NULL); |
| |
| return CMD_RET_SUCCESS; |
| } |
| |
| static const char * const efi_mem_type_string[] = { |
| [EFI_RESERVED_MEMORY_TYPE] = "RESERVED", |
| [EFI_LOADER_CODE] = "LOADER CODE", |
| [EFI_LOADER_DATA] = "LOADER DATA", |
| [EFI_BOOT_SERVICES_CODE] = "BOOT CODE", |
| [EFI_BOOT_SERVICES_DATA] = "BOOT DATA", |
| [EFI_RUNTIME_SERVICES_CODE] = "RUNTIME CODE", |
| [EFI_RUNTIME_SERVICES_DATA] = "RUNTIME DATA", |
| [EFI_CONVENTIONAL_MEMORY] = "CONVENTIONAL", |
| [EFI_UNUSABLE_MEMORY] = "UNUSABLE MEM", |
| [EFI_ACPI_RECLAIM_MEMORY] = "ACPI RECLAIM MEM", |
| [EFI_ACPI_MEMORY_NVS] = "ACPI NVS", |
| [EFI_MMAP_IO] = "IO", |
| [EFI_MMAP_IO_PORT] = "IO PORT", |
| [EFI_PAL_CODE] = "PAL", |
| }; |
| |
| static const struct efi_mem_attrs { |
| const u64 bit; |
| const char *text; |
| } efi_mem_attrs[] = { |
| {EFI_MEMORY_UC, "UC"}, |
| {EFI_MEMORY_UC, "UC"}, |
| {EFI_MEMORY_WC, "WC"}, |
| {EFI_MEMORY_WT, "WT"}, |
| {EFI_MEMORY_WB, "WB"}, |
| {EFI_MEMORY_UCE, "UCE"}, |
| {EFI_MEMORY_WP, "WP"}, |
| {EFI_MEMORY_RP, "RP"}, |
| {EFI_MEMORY_XP, "WP"}, |
| {EFI_MEMORY_NV, "NV"}, |
| {EFI_MEMORY_MORE_RELIABLE, "REL"}, |
| {EFI_MEMORY_RO, "RO"}, |
| {EFI_MEMORY_RUNTIME, "RT"}, |
| }; |
| |
| /** |
| * print_memory_attributes() - print memory map attributes |
| * @attributes: Attribute value |
| * |
| * Print memory map attributes |
| */ |
| static void print_memory_attributes(u64 attributes) |
| { |
| int sep, i; |
| |
| for (sep = 0, i = 0; i < ARRAY_SIZE(efi_mem_attrs); i++) |
| if (attributes & efi_mem_attrs[i].bit) { |
| if (sep) { |
| putc('|'); |
| } else { |
| putc(' '); |
| sep = 1; |
| } |
| puts(efi_mem_attrs[i].text); |
| } |
| } |
| |
| #define EFI_PHYS_ADDR_WIDTH (int)(sizeof(efi_physical_addr_t) * 2) |
| |
| /** |
| * do_efi_show_memmap() - show UEFI memory map |
| * |
| * @cmdtp: Command table |
| * @flag: Command flag |
| * @argc: Number of arguments |
| * @argv: Argument array |
| * Return: CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure |
| * |
| * Implement efidebug "memmap" sub-command. |
| * Show UEFI memory map. |
| */ |
| static int do_efi_show_memmap(cmd_tbl_t *cmdtp, int flag, |
| int argc, char * const argv[]) |
| { |
| struct efi_mem_desc *memmap = NULL, *map; |
| efi_uintn_t map_size = 0; |
| const char *type; |
| int i; |
| efi_status_t ret; |
| |
| ret = EFI_CALL(BS->get_memory_map(&map_size, memmap, NULL, NULL, NULL)); |
| if (ret == EFI_BUFFER_TOO_SMALL) { |
| map_size += sizeof(struct efi_mem_desc); /* for my own */ |
| ret = EFI_CALL(BS->allocate_pool(EFI_LOADER_DATA, |
| map_size, (void *)&memmap)); |
| if (ret != EFI_SUCCESS) |
| return CMD_RET_FAILURE; |
| ret = EFI_CALL(BS->get_memory_map(&map_size, memmap, |
| NULL, NULL, NULL)); |
| } |
| if (ret != EFI_SUCCESS) { |
| EFI_CALL(BS->free_pool(memmap)); |
| return CMD_RET_FAILURE; |
| } |
| |
| printf("Type Start%.*s End%.*s Attributes\n", |
| EFI_PHYS_ADDR_WIDTH - 5, spc, EFI_PHYS_ADDR_WIDTH - 3, spc); |
| printf("================ %.*s %.*s ==========\n", |
| EFI_PHYS_ADDR_WIDTH, sep, EFI_PHYS_ADDR_WIDTH, sep); |
| for (i = 0, map = memmap; i < map_size / sizeof(*map); map++, i++) { |
| if (map->type < EFI_MAX_MEMORY_TYPE) |
| type = efi_mem_type_string[map->type]; |
| else |
| type = "(unknown)"; |
| |
| printf("%-16s %.*llx-%.*llx", type, |
| EFI_PHYS_ADDR_WIDTH, |
| map->physical_start, |
| EFI_PHYS_ADDR_WIDTH, |
| map->physical_start + map->num_pages * EFI_PAGE_SIZE); |
| |
| print_memory_attributes(map->attribute); |
| putc('\n'); |
| } |
| |
| EFI_CALL(BS->free_pool(memmap)); |
| |
| return CMD_RET_SUCCESS; |
| } |
| |
| /** |
| * do_efi_boot_add() - set UEFI load option |
| * |
| * @cmdtp: Command table |
| * @flag: Command flag |
| * @argc: Number of arguments |
| * @argv: Argument array |
| * Return: CMD_RET_SUCCESS on success, |
| * CMD_RET_USAGE or CMD_RET_RET_FAILURE on failure |
| * |
| * Implement efidebug "boot add" sub-command. |
| * Create or change UEFI load option. |
| * - boot add <id> <label> <interface> <devnum>[:<part>] <file> <options> |
| */ |
| static int do_efi_boot_add(cmd_tbl_t *cmdtp, int flag, |
| int argc, char * const argv[]) |
| { |
| int id; |
| char *endp; |
| char var_name[9]; |
| u16 var_name16[9], *p; |
| efi_guid_t guid; |
| size_t label_len, label_len16; |
| u16 *label; |
| struct efi_device_path *device_path = NULL, *file_path = NULL; |
| struct efi_load_option lo; |
| void *data = NULL; |
| efi_uintn_t size; |
| int ret; |
| |
| if (argc < 6 || argc > 7) |
| return CMD_RET_USAGE; |
| |
| id = (int)simple_strtoul(argv[1], &endp, 16); |
| if (*endp != '\0' || id > 0xffff) |
| return CMD_RET_FAILURE; |
| |
| sprintf(var_name, "Boot%04X", id); |
| p = var_name16; |
| utf8_utf16_strncpy(&p, var_name, 9); |
| |
| guid = efi_global_variable_guid; |
| |
| /* attributes */ |
| lo.attributes = LOAD_OPTION_ACTIVE; /* always ACTIVE */ |
| |
| /* label */ |
| label_len = strlen(argv[2]); |
| label_len16 = utf8_utf16_strnlen(argv[2], label_len); |
| label = malloc((label_len16 + 1) * sizeof(u16)); |
| if (!label) |
| return CMD_RET_FAILURE; |
| lo.label = label; /* label will be changed below */ |
| utf8_utf16_strncpy(&label, argv[2], label_len); |
| |
| /* file path */ |
| ret = efi_dp_from_name(argv[3], argv[4], argv[5], &device_path, |
| &file_path); |
| if (ret != EFI_SUCCESS) { |
| printf("Cannot create device path for \"%s %s\"\n", |
| argv[3], argv[4]); |
| ret = CMD_RET_FAILURE; |
| goto out; |
| } |
| lo.file_path = file_path; |
| lo.file_path_length = efi_dp_size(file_path) |
| + sizeof(struct efi_device_path); /* for END */ |
| |
| /* optional data */ |
| lo.optional_data = (u8 *)(argc == 6 ? "" : argv[6]); |
| |
| size = efi_serialize_load_option(&lo, (u8 **)&data); |
| if (!size) { |
| ret = CMD_RET_FAILURE; |
| goto out; |
| } |
| |
| ret = EFI_CALL(RT->set_variable(var_name16, &guid, |
| EFI_VARIABLE_BOOTSERVICE_ACCESS | |
| EFI_VARIABLE_RUNTIME_ACCESS, |
| size, data)); |
| ret = (ret == EFI_SUCCESS ? CMD_RET_SUCCESS : CMD_RET_FAILURE); |
| out: |
| free(data); |
| efi_free_pool(device_path); |
| efi_free_pool(file_path); |
| free(lo.label); |
| |
| return ret; |
| } |
| |
| /** |
| * do_efi_boot_rm() - delete UEFI load options |
| * |
| * @cmdtp: Command table |
| * @flag: Command flag |
| * @argc: Number of arguments |
| * @argv: Argument array |
| * Return: CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure |
| * |
| * Implement efidebug "boot rm" sub-command. |
| * Delete UEFI load options. |
| * - boot rm <id> ... |
| */ |
| static int do_efi_boot_rm(cmd_tbl_t *cmdtp, int flag, |
| int argc, char * const argv[]) |
| { |
| efi_guid_t guid; |
| int id, i; |
| char *endp; |
| char var_name[9]; |
| u16 var_name16[9]; |
| efi_status_t ret; |
| |
| if (argc == 1) |
| return CMD_RET_USAGE; |
| |
| guid = efi_global_variable_guid; |
| for (i = 1; i < argc; i++, argv++) { |
| id = (int)simple_strtoul(argv[1], &endp, 16); |
| if (*endp != '\0' || id > 0xffff) |
| return CMD_RET_FAILURE; |
| |
| sprintf(var_name, "Boot%04X", id); |
| utf8_utf16_strncpy((u16 **)&var_name16, var_name, 9); |
| |
| ret = EFI_CALL(RT->set_variable(var_name16, &guid, 0, 0, NULL)); |
| if (ret) { |
| printf("cannot remove Boot%04X", id); |
| return CMD_RET_FAILURE; |
| } |
| } |
| |
| return CMD_RET_SUCCESS; |
| } |
| |
| /** |
| * show_efi_boot_opt_data() - dump UEFI load option |
| * |
| * @id: Load option number |
| * @data: Value of UEFI load option variable |
| * |
| * Decode the value of UEFI load option variable and print information. |
| */ |
| static void show_efi_boot_opt_data(int id, void *data) |
| { |
| struct efi_load_option lo; |
| char *label, *p; |
| size_t label_len16, label_len; |
| u16 *dp_str; |
| |
| efi_deserialize_load_option(&lo, data); |
| |
| label_len16 = u16_strlen(lo.label); |
| label_len = utf16_utf8_strnlen(lo.label, label_len16); |
| label = malloc(label_len + 1); |
| if (!label) |
| return; |
| p = label; |
| utf16_utf8_strncpy(&p, lo.label, label_len16); |
| |
| printf("Boot%04X:\n", id); |
| printf("\tattributes: %c%c%c (0x%08x)\n", |
| /* ACTIVE */ |
| lo.attributes & LOAD_OPTION_ACTIVE ? 'A' : '-', |
| /* FORCE RECONNECT */ |
| lo.attributes & LOAD_OPTION_FORCE_RECONNECT ? 'R' : '-', |
| /* HIDDEN */ |
| lo.attributes & LOAD_OPTION_HIDDEN ? 'H' : '-', |
| lo.attributes); |
| printf("\tlabel: %s\n", label); |
| |
| dp_str = efi_dp_str(lo.file_path); |
| printf("\tfile_path: %ls\n", dp_str); |
| efi_free_pool(dp_str); |
| |
| printf("\tdata: %s\n", lo.optional_data); |
| |
| free(label); |
| } |
| |
| /** |
| * show_efi_boot_opt() - dump UEFI load option |
| * |
| * @id: Load option number |
| * |
| * Dump information defined by UEFI load option. |
| */ |
| static void show_efi_boot_opt(int id) |
| { |
| char var_name[9]; |
| u16 var_name16[9], *p; |
| efi_guid_t guid; |
| void *data = NULL; |
| efi_uintn_t size; |
| int ret; |
| |
| sprintf(var_name, "Boot%04X", id); |
| p = var_name16; |
| utf8_utf16_strncpy(&p, var_name, 9); |
| guid = efi_global_variable_guid; |
| |
| size = 0; |
| ret = EFI_CALL(RT->get_variable(var_name16, &guid, NULL, &size, NULL)); |
| if (ret == (int)EFI_BUFFER_TOO_SMALL) { |
| data = malloc(size); |
| ret = EFI_CALL(RT->get_variable(var_name16, &guid, NULL, &size, |
| data)); |
| } |
| if (ret == EFI_SUCCESS) |
| show_efi_boot_opt_data(id, data); |
| else if (ret == EFI_NOT_FOUND) |
| printf("Boot%04X: not found\n", id); |
| |
| free(data); |
| } |
| |
| /** |
| * show_efi_boot_dump() - dump all UEFI load options |
| * |
| * @cmdtp: Command table |
| * @flag: Command flag |
| * @argc: Number of arguments |
| * @argv: Argument array |
| * Return: CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure |
| * |
| * Implement efidebug "boot dump" sub-command. |
| * Dump information of all UEFI load options defined. |
| * - boot dump |
| */ |
| static int do_efi_boot_dump(cmd_tbl_t *cmdtp, int flag, |
| int argc, char * const argv[]) |
| { |
| char regex[256]; |
| char * const regexlist[] = {regex}; |
| char *variables = NULL, *boot, *value; |
| int len; |
| int id; |
| |
| if (argc > 1) |
| return CMD_RET_USAGE; |
| |
| snprintf(regex, 256, "efi_.*-.*-.*-.*-.*_Boot[0-9A-F]+"); |
| |
| /* TODO: use GetNextVariableName? */ |
| len = hexport_r(&env_htab, '\n', H_MATCH_REGEX | H_MATCH_KEY, |
| &variables, 0, 1, regexlist); |
| |
| if (!len) |
| return CMD_RET_SUCCESS; |
| |
| if (len < 0) |
| return CMD_RET_FAILURE; |
| |
| boot = variables; |
| while (*boot) { |
| value = strstr(boot, "Boot") + 4; |
| id = (int)simple_strtoul(value, NULL, 16); |
| show_efi_boot_opt(id); |
| boot = strchr(boot, '\n'); |
| if (!*boot) |
| break; |
| boot++; |
| } |
| free(variables); |
| |
| return CMD_RET_SUCCESS; |
| } |
| |
| /** |
| * show_efi_boot_order() - show order of UEFI load options |
| * |
| * Return: CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure |
| * |
| * Show order of UEFI load options defined by BootOrder variable. |
| */ |
| static int show_efi_boot_order(void) |
| { |
| efi_guid_t guid; |
| u16 *bootorder = NULL; |
| efi_uintn_t size; |
| int num, i; |
| char var_name[9]; |
| u16 var_name16[9], *p16; |
| void *data; |
| struct efi_load_option lo; |
| char *label, *p; |
| size_t label_len16, label_len; |
| efi_status_t ret; |
| |
| guid = efi_global_variable_guid; |
| size = 0; |
| ret = EFI_CALL(RT->get_variable(L"BootOrder", &guid, NULL, &size, |
| NULL)); |
| if (ret == EFI_BUFFER_TOO_SMALL) { |
| bootorder = malloc(size); |
| ret = EFI_CALL(RT->get_variable(L"BootOrder", &guid, NULL, |
| &size, bootorder)); |
| } |
| if (ret == EFI_NOT_FOUND) { |
| printf("BootOrder not defined\n"); |
| ret = CMD_RET_SUCCESS; |
| goto out; |
| } else if (ret != EFI_SUCCESS) { |
| ret = CMD_RET_FAILURE; |
| goto out; |
| } |
| |
| num = size / sizeof(u16); |
| for (i = 0; i < num; i++) { |
| sprintf(var_name, "Boot%04X", bootorder[i]); |
| p16 = var_name16; |
| utf8_utf16_strncpy(&p16, var_name, 9); |
| |
| size = 0; |
| ret = EFI_CALL(RT->get_variable(var_name16, &guid, NULL, &size, |
| NULL)); |
| if (ret != EFI_BUFFER_TOO_SMALL) { |
| printf("%2d: Boot%04X: (not defined)\n", |
| i + 1, bootorder[i]); |
| continue; |
| } |
| |
| data = malloc(size); |
| if (!data) { |
| ret = CMD_RET_FAILURE; |
| goto out; |
| } |
| ret = EFI_CALL(RT->get_variable(var_name16, &guid, NULL, &size, |
| data)); |
| if (ret != EFI_SUCCESS) { |
| free(data); |
| ret = CMD_RET_FAILURE; |
| goto out; |
| } |
| |
| efi_deserialize_load_option(&lo, data); |
| |
| label_len16 = u16_strlen(lo.label); |
| label_len = utf16_utf8_strnlen(lo.label, label_len16); |
| label = malloc(label_len + 1); |
| if (!label) { |
| free(data); |
| ret = CMD_RET_FAILURE; |
| goto out; |
| } |
| p = label; |
| utf16_utf8_strncpy(&p, lo.label, label_len16); |
| printf("%2d: Boot%04X: %s\n", i + 1, bootorder[i], label); |
| free(label); |
| |
| free(data); |
| } |
| out: |
| free(bootorder); |
| |
| return ret; |
| } |
| |
| /** |
| * do_efi_boot_next() - manage UEFI BootNext variable |
| * |
| * @cmdtp: Command table |
| * @flag: Command flag |
| * @argc: Number of arguments |
| * @argv: Argument array |
| * Return: CMD_RET_SUCCESS on success, |
| * CMD_RET_USAGE or CMD_RET_RET_FAILURE on failure |
| * |
| * Implement efidebug "boot next" sub-command. |
| * Set BootNext variable. |
| * - boot next <id> |
| */ |
| static int do_efi_boot_next(cmd_tbl_t *cmdtp, int flag, |
| int argc, char * const argv[]) |
| { |
| u16 bootnext; |
| efi_uintn_t size; |
| char *endp; |
| efi_guid_t guid; |
| efi_status_t ret; |
| |
| if (argc != 2) |
| return CMD_RET_USAGE; |
| |
| bootnext = (u16)simple_strtoul(argv[1], &endp, 16); |
| if (*endp != '\0' || bootnext > 0xffff) { |
| printf("invalid value: %s\n", argv[1]); |
| ret = CMD_RET_FAILURE; |
| goto out; |
| } |
| |
| guid = efi_global_variable_guid; |
| size = sizeof(u16); |
| ret = EFI_CALL(RT->set_variable(L"BootNext", &guid, |
| EFI_VARIABLE_BOOTSERVICE_ACCESS | |
| EFI_VARIABLE_RUNTIME_ACCESS, |
| size, &bootnext)); |
| ret = (ret == EFI_SUCCESS ? CMD_RET_SUCCESS : CMD_RET_FAILURE); |
| out: |
| return ret; |
| } |
| |
| /** |
| * do_efi_boot_order() - manage UEFI BootOrder variable |
| * |
| * @cmdtp: Command table |
| * @flag: Command flag |
| * @argc: Number of arguments |
| * @argv: Argument array |
| * Return: CMD_RET_SUCCESS on success, CMD_RET_RET_FAILURE on failure |
| * |
| * Implement efidebug "boot order" sub-command. |
| * Show order of UEFI load options, or change it in BootOrder variable. |
| * - boot order [<id> ...] |
| */ |
| static int do_efi_boot_order(cmd_tbl_t *cmdtp, int flag, |
| int argc, char * const argv[]) |
| { |
| u16 *bootorder = NULL; |
| efi_uintn_t size; |
| int id, i; |
| char *endp; |
| efi_guid_t guid; |
| efi_status_t ret; |
| |
| if (argc == 1) |
| return show_efi_boot_order(); |
| |
| argc--; |
| argv++; |
| |
| size = argc * sizeof(u16); |
| bootorder = malloc(size); |
| if (!bootorder) |
| return CMD_RET_FAILURE; |
| |
| for (i = 0; i < argc; i++) { |
| id = (int)simple_strtoul(argv[i], &endp, 16); |
| if (*endp != '\0' || id > 0xffff) { |
| printf("invalid value: %s\n", argv[i]); |
| ret = CMD_RET_FAILURE; |
| goto out; |
| } |
| |
| bootorder[i] = (u16)id; |
| } |
| |
| guid = efi_global_variable_guid; |
| ret = EFI_CALL(RT->set_variable(L"BootOrder", &guid, |
| EFI_VARIABLE_BOOTSERVICE_ACCESS | |
| EFI_VARIABLE_RUNTIME_ACCESS, |
| size, bootorder)); |
| ret = (ret == EFI_SUCCESS ? CMD_RET_SUCCESS : CMD_RET_FAILURE); |
| out: |
| free(bootorder); |
| |
| return ret; |
| } |
| |
| static cmd_tbl_t cmd_efidebug_boot_sub[] = { |
| U_BOOT_CMD_MKENT(add, CONFIG_SYS_MAXARGS, 1, do_efi_boot_add, "", ""), |
| U_BOOT_CMD_MKENT(rm, CONFIG_SYS_MAXARGS, 1, do_efi_boot_rm, "", ""), |
| U_BOOT_CMD_MKENT(dump, CONFIG_SYS_MAXARGS, 1, do_efi_boot_dump, "", ""), |
| U_BOOT_CMD_MKENT(next, CONFIG_SYS_MAXARGS, 1, do_efi_boot_next, "", ""), |
| U_BOOT_CMD_MKENT(order, CONFIG_SYS_MAXARGS, 1, do_efi_boot_order, |
| "", ""), |
| }; |
| |
| /** |
| * do_efi_boot_opt() - manage UEFI load options |
| * |
| * @cmdtp: Command table |
| * @flag: Command flag |
| * @argc: Number of arguments |
| * @argv: Argument array |
| * Return: CMD_RET_SUCCESS on success, |
| * CMD_RET_USAGE or CMD_RET_RET_FAILURE on failure |
| * |
| * Implement efidebug "boot" sub-command. |
| * See above for details of sub-commands. |
| */ |
| static int do_efi_boot_opt(cmd_tbl_t *cmdtp, int flag, |
| int argc, char * const argv[]) |
| { |
| cmd_tbl_t *cp; |
| |
| if (argc < 2) |
| return CMD_RET_USAGE; |
| |
| argc--; argv++; |
| |
| cp = find_cmd_tbl(argv[0], cmd_efidebug_boot_sub, |
| ARRAY_SIZE(cmd_efidebug_boot_sub)); |
| if (!cp) |
| return CMD_RET_USAGE; |
| |
| return cp->cmd(cmdtp, flag, argc, argv); |
| } |
| |
| static cmd_tbl_t cmd_efidebug_sub[] = { |
| U_BOOT_CMD_MKENT(boot, CONFIG_SYS_MAXARGS, 1, do_efi_boot_opt, "", ""), |
| U_BOOT_CMD_MKENT(devices, CONFIG_SYS_MAXARGS, 1, do_efi_show_devices, |
| "", ""), |
| U_BOOT_CMD_MKENT(drivers, CONFIG_SYS_MAXARGS, 1, do_efi_show_drivers, |
| "", ""), |
| U_BOOT_CMD_MKENT(dh, CONFIG_SYS_MAXARGS, 1, do_efi_show_handles, |
| "", ""), |
| U_BOOT_CMD_MKENT(images, CONFIG_SYS_MAXARGS, 1, do_efi_show_images, |
| "", ""), |
| U_BOOT_CMD_MKENT(memmap, CONFIG_SYS_MAXARGS, 1, do_efi_show_memmap, |
| "", ""), |
| }; |
| |
| /** |
| * do_efidebug() - display and configure UEFI environment |
| * |
| * @cmdtp: Command table |
| * @flag: Command flag |
| * @argc: Number of arguments |
| * @argv: Argument array |
| * Return: CMD_RET_SUCCESS on success, |
| * CMD_RET_USAGE or CMD_RET_RET_FAILURE on failure |
| * |
| * Implement efidebug command which allows us to display and |
| * configure UEFI environment. |
| * See above for details of sub-commands. |
| */ |
| static int do_efidebug(cmd_tbl_t *cmdtp, int flag, |
| int argc, char * const argv[]) |
| { |
| cmd_tbl_t *cp; |
| efi_status_t r; |
| |
| if (argc < 2) |
| return CMD_RET_USAGE; |
| |
| argc--; argv++; |
| |
| /* Initialize UEFI drivers */ |
| r = efi_init_obj_list(); |
| if (r != EFI_SUCCESS) { |
| printf("Error: Cannot initialize UEFI sub-system, r = %lu\n", |
| r & ~EFI_ERROR_MASK); |
| return CMD_RET_FAILURE; |
| } |
| |
| cp = find_cmd_tbl(argv[0], cmd_efidebug_sub, |
| ARRAY_SIZE(cmd_efidebug_sub)); |
| if (!cp) |
| return CMD_RET_USAGE; |
| |
| return cp->cmd(cmdtp, flag, argc, argv); |
| } |
| |
| #ifdef CONFIG_SYS_LONGHELP |
| static char efidebug_help_text[] = |
| " - UEFI Shell-like interface to configure UEFI environment\n" |
| "\n" |
| "efidebug boot add <bootid> <label> <interface> <devnum>[:<part>] <file path> [<load options>]\n" |
| " - set UEFI BootXXXX variable\n" |
| " <load options> will be passed to UEFI application\n" |
| "efidebug boot rm <bootid#1> [<bootid#2> [<bootid#3> [...]]]\n" |
| " - delete UEFI BootXXXX variables\n" |
| "efidebug boot dump\n" |
| " - dump all UEFI BootXXXX variables\n" |
| "efidebug boot next <bootid>\n" |
| " - set UEFI BootNext variable\n" |
| "efidebug boot order [<bootid#1> [<bootid#2> [<bootid#3> [...]]]]\n" |
| " - set/show UEFI boot order\n" |
| "\n" |
| "efidebug devices\n" |
| " - show uefi devices\n" |
| "efidebug drivers\n" |
| " - show uefi drivers\n" |
| "efidebug dh\n" |
| " - show uefi handles\n" |
| "efidebug images\n" |
| " - show loaded images\n" |
| "efidebug memmap\n" |
| " - show uefi memory map\n"; |
| #endif |
| |
| U_BOOT_CMD( |
| efidebug, 10, 0, do_efidebug, |
| "Configure UEFI environment", |
| efidebug_help_text |
| ); |