diff options
Diffstat (limited to 'cmd')
| -rw-r--r-- | cmd/Kconfig | 21 | ||||
| -rw-r--r-- | cmd/Makefile | 4 | ||||
| -rw-r--r-- | cmd/bootefi.c | 93 | ||||
| -rw-r--r-- | cmd/date.c | 8 | ||||
| -rw-r--r-- | cmd/efidebug.c | 1046 | ||||
| -rw-r--r-- | cmd/elf.c | 6 | ||||
| -rw-r--r-- | cmd/fs.c | 2 | ||||
| -rw-r--r-- | cmd/gpio.c | 10 | ||||
| -rw-r--r-- | cmd/nvedit.c | 28 | ||||
| -rw-r--r-- | cmd/nvedit_efi.c | 399 |
10 files changed, 1549 insertions, 68 deletions
diff --git a/cmd/Kconfig b/cmd/Kconfig index 3ea42e4256..4bcc5c4557 100644 --- a/cmd/Kconfig +++ b/cmd/Kconfig @@ -420,6 +420,16 @@ config CMD_ENV_FLAGS be deleted. This command shows the variables that have special flags. +config CMD_NVEDIT_EFI + bool "env [set|print] -e - set/print UEFI variables" + depends on EFI_LOADER + default y + imply HEXDUMP + help + UEFI variables are encoded as some form of U-Boot variables. + If enabled, we are allowed to set/print UEFI variables using + "env" command with "-e" option without knowing details. + endmenu menu "Memory commands" @@ -1397,8 +1407,19 @@ config CMD_DISPLAY displayed on a simple board-specific display. Implement display_putc() to use it. +config CMD_EFIDEBUG + bool "efidebug - display/configure UEFI environment" + depends on EFI_LOADER + default n + help + Enable the 'efidebug' command which provides a subset of UEFI + shell utility with simplified functionality. It will be useful + particularly for managing boot parameters as well as examining + various EFI status for debugging. + config CMD_LED bool "led" + depends on LED default y if LED help Enable the 'led' command which allows for control of LEDs supported diff --git a/cmd/Makefile b/cmd/Makefile index 15ae4d250f..acb85f49fb 100644 --- a/cmd/Makefile +++ b/cmd/Makefile @@ -51,6 +51,7 @@ obj-$(CONFIG_CMD_ECHO) += echo.o obj-$(CONFIG_ENV_IS_IN_EEPROM) += eeprom.o obj-$(CONFIG_CMD_EEPROM) += eeprom.o obj-$(CONFIG_EFI_STUB) += efi.o +obj-$(CONFIG_CMD_EFIDEBUG) += efidebug.o obj-$(CONFIG_CMD_ELF) += elf.o obj-$(CONFIG_HUSH_PARSER) += exit.o obj-$(CONFIG_CMD_EXT4) += ext4.o @@ -98,13 +99,14 @@ obj-$(CONFIG_CMD_MTD) += mtd.o obj-$(CONFIG_CMD_MTDPARTS) += mtdparts.o obj-$(CONFIG_CMD_NAND) += nand.o obj-$(CONFIG_CMD_NET) += net.o +obj-$(CONFIG_CMD_NVEDIT_EFI) += nvedit_efi.o obj-$(CONFIG_CMD_ONENAND) += onenand.o obj-$(CONFIG_CMD_OSD) += osd.o obj-$(CONFIG_CMD_PART) += part.o ifdef CONFIG_PCI obj-$(CONFIG_CMD_PCI) += pci.o endif -obj-y += pcmcia.o +obj-$(CONFIG_CMD_PCMCIA) += pcmcia.o obj-$(CONFIG_CMD_PINMUX) += pinmux.o obj-$(CONFIG_CMD_PXE) += pxe.o obj-$(CONFIG_CMD_WOL) += wol.o diff --git a/cmd/bootefi.c b/cmd/bootefi.c index ee685d8644..3619a20e64 100644 --- a/cmd/bootefi.c +++ b/cmd/bootefi.c @@ -133,20 +133,6 @@ done: return ret; } -static efi_status_t efi_do_enter( - efi_handle_t image_handle, struct efi_system_table *st, - EFIAPI efi_status_t (*entry)( - efi_handle_t image_handle, - struct efi_system_table *st)) -{ - efi_status_t ret = EFI_LOAD_ERROR; - - if (entry) - ret = entry(image_handle, st); - st->boottime->exit(image_handle, ret, 0, NULL); - return ret; -} - /* * efi_carve_out_dt_rsv() - Carve out DT reserved memory ranges * @@ -266,9 +252,6 @@ static efi_status_t do_bootefi_exec(void *efi, struct efi_loaded_image_obj *image_obj = NULL; struct efi_loaded_image *loaded_image_info = NULL; - EFIAPI efi_status_t (*entry)(efi_handle_t image_handle, - struct efi_system_table *st); - /* * Special case for efi payload not loaded from disk, such as * 'bootefi hello' or for example payload loaded directly into @@ -300,11 +283,9 @@ static efi_status_t do_bootefi_exec(void *efi, goto err_prepare; /* Load the EFI payload */ - entry = efi_load_pe(image_obj, efi, loaded_image_info); - if (!entry) { - ret = EFI_LOAD_ERROR; + ret = efi_load_pe(image_obj, efi, loaded_image_info); + if (ret != EFI_SUCCESS) goto err_prepare; - } if (memdp) { struct efi_device_path_memory *mdp = (void *)memdp; @@ -319,14 +300,8 @@ static efi_status_t do_bootefi_exec(void *efi, "{ro,boot}(blob)0000000000000000"); /* Call our payload! */ - debug("%s: Jumping to 0x%p\n", __func__, entry); - - if (setjmp(&image_obj->exit_jmp)) { - ret = image_obj->exit_status; - goto err_prepare; - } - - ret = efi_do_enter(&image_obj->header, &systab, entry); + debug("%s: Jumping to 0x%p\n", __func__, image_obj->entry); + ret = EFI_CALL(efi_start_image(&image_obj->header, NULL, NULL)); err_prepare: /* image has returned, loaded-image obj goes *poof*: */ @@ -343,38 +318,46 @@ err_add_protocol: /** * bootefi_test_prepare() - prepare to run an EFI test * - * This sets things up so we can call EFI functions. This involves preparing - * the 'gd' pointer and setting up the load ed image data structures. + * Prepare to run a test as if it were provided by a loaded image. * - * @image_objp: loaded_image_infop: Pointer to a struct which will hold the - * loaded image object. This struct will be inited by this function before - * use. - * @loaded_image_infop: Pointer to a struct which will hold the loaded image - * info. This struct will be inited by this function before use. - * @path: File path to the test being run (often just the test name with a - * backslash before it - * @test_func: Address of the test function that is being run - * @load_options_path: U-Boot environment variable to use as load options - * @return 0 if OK, -ve on error + * @image_objp: pointer to be set to the loaded image handle + * @loaded_image_infop: pointer to be set to the loaded image protocol + * @path: dummy file path used to construct the device path + * set in the loaded image protocol + * @load_options_path: name of a U-Boot environment variable. Its value is + * set as load options in the loaded image protocol. + * Return: status code */ static efi_status_t bootefi_test_prepare (struct efi_loaded_image_obj **image_objp, - struct efi_loaded_image **loaded_image_infop, const char *path, - ulong test_func, const char *load_options_path) + struct efi_loaded_image **loaded_image_infop, const char *path, + const char *load_options_path) { + efi_status_t ret; + /* Construct a dummy device path */ - bootefi_device_path = efi_dp_from_mem(EFI_RESERVED_MEMORY_TYPE, - (uintptr_t)test_func, - (uintptr_t)test_func); + bootefi_device_path = efi_dp_from_mem(EFI_RESERVED_MEMORY_TYPE, 0, 0); if (!bootefi_device_path) return EFI_OUT_OF_RESOURCES; + bootefi_image_path = efi_dp_from_file(NULL, 0, path); - if (!bootefi_image_path) - return EFI_OUT_OF_RESOURCES; + if (!bootefi_image_path) { + ret = EFI_OUT_OF_RESOURCES; + goto failure; + } - return bootefi_run_prepare(load_options_path, bootefi_device_path, - bootefi_image_path, image_objp, - loaded_image_infop); + ret = bootefi_run_prepare(load_options_path, bootefi_device_path, + bootefi_image_path, image_objp, + loaded_image_infop); + if (ret == EFI_SUCCESS) + return ret; + + efi_free_pool(bootefi_image_path); + bootefi_image_path = NULL; +failure: + efi_free_pool(bootefi_device_path); + bootefi_device_path = NULL; + return ret; } #endif /* CONFIG_CMD_BOOTEFI_SELFTEST */ @@ -456,13 +439,13 @@ static int do_bootefi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) struct efi_loaded_image_obj *image_obj; struct efi_loaded_image *loaded_image_info; - if (bootefi_test_prepare(&image_obj, &loaded_image_info, - "\\selftest", (uintptr_t)&efi_selftest, - "efi_selftest")) + r = bootefi_test_prepare(&image_obj, &loaded_image_info, + "\\selftest", "efi_selftest"); + if (r != EFI_SUCCESS) return CMD_RET_FAILURE; /* Execute the test */ - r = efi_selftest(&image_obj->header, &systab); + r = EFI_CALL(efi_selftest(&image_obj->header, &systab)); bootefi_run_finish(image_obj, loaded_image_info); return r != EFI_SUCCESS; } else diff --git a/cmd/date.c b/cmd/date.c index 1115b6c8d6..7fa950a902 100644 --- a/cmd/date.c +++ b/cmd/date.c @@ -159,18 +159,18 @@ int mk_date (const char *datestr, struct rtc_time *tmp) int len, val; char *ptr; - ptr = strchr (datestr,'.'); - len = strlen (datestr); + ptr = strchr(datestr, '.'); + len = strlen(datestr); /* Set seconds */ if (ptr) { int sec; - *ptr++ = '\0'; + ptr++; if ((len - (ptr - datestr)) != 2) return (-1); - len = strlen (datestr); + len -= 3; if (cnvrt2 (ptr, &sec)) return (-1); diff --git a/cmd/efidebug.c b/cmd/efidebug.c new file mode 100644 index 0000000000..5072a7b39b --- /dev/null +++ b/cmd/efidebug.c @@ -0,0 +1,1046 @@ +// 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 +); @@ -53,7 +53,8 @@ static unsigned long load_elf64_image_phdr(unsigned long addr) if (phdr->p_filesz != phdr->p_memsz) memset(dst + phdr->p_filesz, 0x00, phdr->p_memsz - phdr->p_filesz); - flush_cache((unsigned long)dst, phdr->p_filesz); + flush_cache(rounddown((unsigned long)dst, ARCH_DMA_MINALIGN), + roundup(phdr->p_memsz, ARCH_DMA_MINALIGN)); ++phdr; } @@ -167,7 +168,8 @@ static unsigned long load_elf_image_phdr(unsigned long addr) if (phdr->p_filesz != phdr->p_memsz) memset(dst + phdr->p_filesz, 0x00, phdr->p_memsz - phdr->p_filesz); - flush_cache((unsigned long)dst, phdr->p_filesz); + flush_cache(rounddown((unsigned long)dst, ARCH_DMA_MINALIGN), + roundup(phdr->p_memsz, ARCH_DMA_MINALIGN)); ++phdr; } @@ -26,8 +26,10 @@ U_BOOT_CMD( static int do_load_wrapper(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { +#ifdef CONFIG_CMD_BOOTEFI efi_set_bootdev(argv[1], (argc > 2) ? argv[2] : "", (argc > 4) ? argv[4] : ""); +#endif return do_load(cmdtp, flag, argc, argv, FS_TYPE_ANY); } diff --git a/cmd/gpio.c b/cmd/gpio.c index 4ac1f1e418..53366f36e7 100644 --- a/cmd/gpio.c +++ b/cmd/gpio.c @@ -34,7 +34,7 @@ enum { }; static void gpio_get_description(struct udevice *dev, const char *bank_name, - int offset, int *flagsp) + int offset, int *flagsp, bool show_all) { char buf[80]; int ret; @@ -42,7 +42,7 @@ static void gpio_get_description(struct udevice *dev, const char *bank_name, ret = gpio_get_function(dev, offset, NULL); if (ret < 0) goto err; - if (!(*flagsp & FLAG_SHOW_ALL) && ret == GPIOF_UNUSED) + if (!show_all && !(*flagsp & FLAG_SHOW_ALL) && ret == GPIOF_UNUSED) return; if ((*flagsp & FLAG_SHOW_BANK) && bank_name) { if (*flagsp & FLAG_SHOW_NEWLINE) { @@ -90,7 +90,7 @@ static int do_gpio_status(bool all, const char *gpio_name) banklen = bank_name ? strlen(bank_name) : 0; if (!gpio_name || !bank_name || - !strncmp(gpio_name, bank_name, banklen)) { + !strncasecmp(gpio_name, bank_name, banklen)) { const char *p = NULL; int offset; @@ -98,11 +98,11 @@ static int do_gpio_status(bool all, const char *gpio_name) if (gpio_name && *p) { offset = simple_strtoul(p, NULL, 10); gpio_get_description(dev, bank_name, offset, - &flags); + &flags, true); } else { for (offset = 0; offset < num_bits; offset++) { gpio_get_description(dev, bank_name, - offset, &flags); + offset, &flags, false); } } } diff --git a/cmd/nvedit.c b/cmd/nvedit.c index ebaa16b754..24a6cf7824 100644 --- a/cmd/nvedit.c +++ b/cmd/nvedit.c @@ -119,6 +119,11 @@ static int do_env_print(cmd_tbl_t *cmdtp, int flag, int argc, int rcode = 0; int env_flag = H_HIDE_DOT; +#if defined(CONFIG_CMD_NVEDIT_EFI) + if (argc > 1 && argv[1][0] == '-' && argv[1][1] == 'e') + return do_env_print_efi(cmdtp, flag, --argc, ++argv); +#endif + if (argc > 1 && argv[1][0] == '-' && argv[1][1] == 'a') { argc--; argv++; @@ -216,6 +221,12 @@ static int _do_env_set(int flag, int argc, char * const argv[], int env_flag) ENTRY e, *ep; debug("Initial value for argc=%d\n", argc); + +#if CONFIG_IS_ENABLED(CMD_NVEDIT_EFI) + if (argc > 1 && argv[1][0] == '-' && argv[1][1] == 'e') + return do_env_set_efi(NULL, flag, --argc, ++argv); +#endif + while (argc > 1 && **(argv + 1) == '-') { char *arg = *++argv; @@ -1263,12 +1274,18 @@ static char env_help_text[] = "env import [-d] [-t [-r] | -b | -c] addr [size] [var ...] - import environment\n" #endif "env print [-a | name ...] - print environment\n" +#if defined(CONFIG_CMD_NVEDIT_EFI) + "env print -e [name ...] - print UEFI environment\n" +#endif #if defined(CONFIG_CMD_RUN) "env run var [...] - run commands in an environment variable\n" #endif #if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE) "env save - save environment\n" #endif +#if defined(CONFIG_CMD_NVEDIT_EFI) + "env set -e name [arg ...] - set UEFI variable; unset if 'arg' not specified\n" +#endif "env set [-f] name [arg ...]\n"; #endif @@ -1295,6 +1312,10 @@ U_BOOT_CMD_COMPLETE( printenv, CONFIG_SYS_MAXARGS, 1, do_env_print, "print environment variables", "[-a]\n - print [all] values of all environment variables\n" +#if defined(CONFIG_CMD_NVEDIT_EFI) + "printenv -e [name ...]\n" + " - print UEFI variable 'name' or all the variables\n" +#endif "printenv name ...\n" " - print value of environment variable 'name'", var_complete @@ -1322,7 +1343,12 @@ U_BOOT_CMD_COMPLETE( U_BOOT_CMD_COMPLETE( setenv, CONFIG_SYS_MAXARGS, 0, do_env_set, "set environment variables", - "[-f] name value ...\n" +#if defined(CONFIG_CMD_NVEDIT_EFI) + "-e name [value ...]\n" + " - set UEFI variable 'name' to 'value' ...'\n" + " - delete UEFI variable 'name' if 'value' not specified\n" +#endif + "setenv [-f] name value ...\n" " - [forcibly] set environment variable 'name' to 'value ...'\n" "setenv [-f] name\n" " - [forcibly] delete environment variable 'name'", diff --git a/cmd/nvedit_efi.c b/cmd/nvedit_efi.c new file mode 100644 index 0000000000..ca32566a61 --- /dev/null +++ b/cmd/nvedit_efi.c @@ -0,0 +1,399 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Integrate UEFI variables to u-boot env interface + * + * Copyright (c) 2018 AKASHI Takahiro, Linaro Limited + */ + +#include <charset.h> +#include <common.h> +#include <command.h> +#include <efi_loader.h> +#include <exports.h> +#include <hexdump.h> +#include <malloc.h> +#include <linux/kernel.h> + +/* + * From efi_variable.c, + * + * Mapping between UEFI variables and u-boot variables: + * + * efi_$guid_$varname = {attributes}(type)value + */ + +static const struct { + u32 mask; + char *text; +} efi_var_attrs[] = { + {EFI_VARIABLE_NON_VOLATILE, "NV"}, + {EFI_VARIABLE_BOOTSERVICE_ACCESS, "BS"}, + {EFI_VARIABLE_RUNTIME_ACCESS, "RT"}, + {EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS, "AW"}, + {EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS, "AT"}, +}; + +/** + * efi_dump_single_var() - show information about a UEFI variable + * + * @name: Name of the variable + * @guid: Vendor GUID + * + * Show information encoded in one UEFI variable + */ +static void efi_dump_single_var(u16 *name, efi_guid_t *guid) +{ + u32 attributes; + u8 *data; + efi_uintn_t size; + int count, i; + efi_status_t ret; + + data = NULL; + size = 0; + ret = EFI_CALL(efi_get_variable(name, guid, &attributes, &size, data)); + if (ret == EFI_BUFFER_TOO_SMALL) { + data = malloc(size); + if (!data) + goto out; + + ret = EFI_CALL(efi_get_variable(name, guid, &attributes, &size, + data)); + } + if (ret == EFI_NOT_FOUND) { + printf("Error: \"%ls\" not defined\n", name); + goto out; + } + if (ret != EFI_SUCCESS) + goto out; + + printf("%ls:", name); + for (count = 0, i = 0; i < ARRAY_SIZE(efi_var_attrs); i++) + if (attributes & efi_var_attrs[i].mask) { + if (count) + putc('|'); + else + putc(' '); + count++; + puts(efi_var_attrs[i].text); + } + printf(", DataSize = 0x%zx\n", size); + print_hex_dump(" ", DUMP_PREFIX_OFFSET, 16, 1, data, size, true); + + return; +out: + free(data); +} + +/** + * efi_dump_vars() - show information about named UEFI variables + * + * @argc: Number of arguments (variables) + * @argv: Argument (variable name) array + * Return: CMD_RET_SUCCESS on success, or CMD_RET_RET_FAILURE + * + * Show information encoded in named UEFI variables + */ +static int efi_dump_vars(int argc, char * const argv[]) +{ + u16 *var_name16, *p; + efi_uintn_t buf_size, size; + + buf_size = 128; + var_name16 = malloc(buf_size); + if (!var_name16) + return CMD_RET_FAILURE; + + for (; argc > 0; argc--, argv++) { + size = (utf8_utf16_strlen(argv[0]) + 1) * sizeof(u16); + if (buf_size < size) { + buf_size = size; + p = realloc(var_name16, buf_size); + if (!p) { + free(var_name16); + return CMD_RET_FAILURE; + } + var_name16 = p; + } + + p = var_name16; + utf8_utf16_strcpy(&p, argv[0]); + + efi_dump_single_var(var_name16, + (efi_guid_t *)&efi_global_variable_guid); + } + + free(var_name16); + + return CMD_RET_SUCCESS; +} + +/** + * efi_dump_vars() - show information about all the UEFI variables + * + * Return: CMD_RET_SUCCESS on success, or CMD_RET_RET_FAILURE + * + * Show information encoded in all the UEFI variables + */ +static int efi_dump_var_all(void) +{ + u16 *var_name16, *p; + efi_uintn_t buf_size, size; + efi_guid_t guid; + efi_status_t ret; + + buf_size = 128; + var_name16 = malloc(buf_size); + if (!var_name16) + return CMD_RET_FAILURE; + + var_name16[0] = 0; + for (;;) { + size = buf_size; + ret = EFI_CALL(efi_get_next_variable_name(&size, var_name16, + &guid)); + if (ret == EFI_NOT_FOUND) + break; + if (ret == EFI_BUFFER_TOO_SMALL) { + buf_size = size; + p = realloc(var_name16, buf_size); + if (!p) { + free(var_name16); + return CMD_RET_FAILURE; + } + var_name16 = p; + ret = EFI_CALL(efi_get_next_variable_name(&size, + var_name16, + &guid)); + } + if (ret != EFI_SUCCESS) { + free(var_name16); + return CMD_RET_FAILURE; + } + + efi_dump_single_var(var_name16, &guid); + } + + free(var_name16); + + return CMD_RET_SUCCESS; +} + +/** + * do_env_print_efi() - show information about UEFI variables + * + * @cmdtp: Command table + * @flag: Command flag + * @argc: Number of arguments + * @argv: Argument array + * Return: CMD_RET_SUCCESS on success, or CMD_RET_RET_FAILURE + * + * This function is for "env print -e" or "printenv -e" command: + * => env print -e [var [...]] + * If one or more variable names are specified, show information + * named UEFI variables, otherwise show all the UEFI variables. + */ +int do_env_print_efi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) +{ + efi_status_t ret; + + /* Initialize EFI drivers */ + ret = efi_init_obj_list(); + if (ret != EFI_SUCCESS) { + printf("Error: Cannot initialize UEFI sub-system, r = %lu\n", + ret & ~EFI_ERROR_MASK); + return CMD_RET_FAILURE; + } + + if (argc > 1) + /* show specified UEFI variables */ + return efi_dump_vars(--argc, ++argv); + + /* enumerate and show all UEFI variables */ + return efi_dump_var_all(); +} + +/** + * append_value() - encode UEFI variable's value + * @bufp: Buffer of encoded UEFI variable's value + * @sizep: Size of buffer + * @data: data to be encoded into the value + * Return: 0 on success, -1 otherwise + * + * Interpret a given data string and append it to buffer. + * Buffer will be realloc'ed if necessary. + * + * Currently supported formats are: + * =0x0123...: Hexadecimal number + * =H0123...: Hexadecimal-byte array + * ="...", =S"..." or <string>: + * String + */ +static int append_value(char **bufp, size_t *sizep, char *data) +{ + char *tmp_buf = NULL, *new_buf = NULL, *value; + unsigned long len = 0; + + if (!strncmp(data, "=0x", 2)) { /* hexadecimal number */ + union { + u8 u8; + u16 u16; + u32 u32; + u64 u64; + } tmp_data; + unsigned long hex_value; + void *hex_ptr; + + data += 3; + len = strlen(data); + if ((len & 0x1)) /* not multiple of two */ + return -1; + + len /= 2; + if (len > 8) + return -1; + else if (len > 4) + len = 8; + else if (len > 2) + len = 4; + + /* convert hex hexadecimal number */ + if (strict_strtoul(data, 16, &hex_value) < 0) + return -1; + + tmp_buf = malloc(len); + if (!tmp_buf) + return -1; + + if (len == 1) { + tmp_data.u8 = hex_value; + hex_ptr = &tmp_data.u8; + } else if (len == 2) { + tmp_data.u16 = hex_value; + hex_ptr = &tmp_data.u16; + } else if (len == 4) { + tmp_data.u32 = hex_value; + hex_ptr = &tmp_data.u32; + } else { + tmp_data.u64 = hex_value; + hex_ptr = &tmp_data.u64; + } + memcpy(tmp_buf, hex_ptr, len); + value = tmp_buf; + + } else if (!strncmp(data, "=H", 2)) { /* hexadecimal-byte array */ + data += 2; + len = strlen(data); + if (len & 0x1) /* not multiple of two */ + return -1; + + len /= 2; + tmp_buf = malloc(len); + if (!tmp_buf) + return -1; + + if (hex2bin((u8 *)tmp_buf, data, len) < 0) + return -1; + + value = tmp_buf; + } else { /* string */ + if (!strncmp(data, "=\"", 2) || !strncmp(data, "=S\"", 3)) { + if (data[1] == '"') + data += 2; + else + data += 3; + value = data; + len = strlen(data) - 1; + if (data[len] != '"') + return -1; + } else { + value = data; + len = strlen(data); + } + } + + new_buf = realloc(*bufp, *sizep + len); + if (!new_buf) + goto out; + + memcpy(new_buf + *sizep, value, len); + *bufp = new_buf; + *sizep += len; + +out: + free(tmp_buf); + + return 0; +} + +/** + * do_env_print_efi() - set UEFI variable + * + * @cmdtp: Command table + * @flag: Command flag + * @argc: Number of arguments + * @argv: Argument array + * Return: CMD_RET_SUCCESS on success, or CMD_RET_RET_FAILURE + * + * This function is for "env set -e" or "setenv -e" command: + * => env set -e var [value ...]] + * Encode values specified and set given UEFI variable. + * If no value is specified, delete the variable. + */ +int do_env_set_efi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) +{ + char *var_name, *value = NULL; + efi_uintn_t size = 0; + u16 *var_name16 = NULL, *p; + size_t len; + efi_guid_t guid; + efi_status_t ret; + + if (argc == 1) + return CMD_RET_USAGE; + + /* Initialize EFI drivers */ + ret = efi_init_obj_list(); + if (ret != EFI_SUCCESS) { + printf("Error: Cannot initialize UEFI sub-system, r = %lu\n", + ret & ~EFI_ERROR_MASK); + return CMD_RET_FAILURE; + } + + var_name = argv[1]; + if (argc == 2) { + /* delete */ + value = NULL; + size = 0; + } else { /* set */ + argc -= 2; + argv += 2; + + for ( ; argc > 0; argc--, argv++) + if (append_value(&value, &size, argv[0]) < 0) { + ret = CMD_RET_FAILURE; + goto out; + } + } + + len = utf8_utf16_strnlen(var_name, strlen(var_name)); + var_name16 = malloc((len + 1) * 2); + if (!var_name16) { + ret = CMD_RET_FAILURE; + goto out; + } + p = var_name16; + utf8_utf16_strncpy(&p, var_name, len + 1); + + guid = efi_global_variable_guid; + ret = EFI_CALL(efi_set_variable(var_name16, &guid, + EFI_VARIABLE_BOOTSERVICE_ACCESS | + EFI_VARIABLE_RUNTIME_ACCESS, + size, value)); + ret = (ret == EFI_SUCCESS ? CMD_RET_SUCCESS : CMD_RET_FAILURE); +out: + free(value); + free(var_name16); + + return ret; +} |