[U-Boot] [PATCH v8 3/8] cmd: add efidebug command

Heinrich Schuchardt xypron.glpk at gmx.de
Sat Feb 23 10:32:48 UTC 2019


On 2/22/19 9:10 AM, AKASHI Takahiro wrote:
> Currently, there is no easy way to add or modify UEFI variables.
> In particular, bootmgr supports BootOrder/BootXXXX variables, it is
> quite hard to define them as u-boot variables because they are represented
> in a complicated and encoded format.
> 
> The new command, efidebug, helps address these issues and give us
> more friendly interfaces:
>  * efidebug boot add: add BootXXXX variable
>  * efidebug boot rm: remove BootXXXX variable
>  * efidebug boot dump: display all BootXXXX variables
>  * efidebug boot next: set BootNext variable
>  * efidebug boot order: set/display a boot order (BootOrder)
> 
> Signed-off-by: AKASHI Takahiro <takahiro.akashi at linaro.org>

Unfortunately you are still calling functions without EFI_CALL() that
need it. See below.

> ---
>  MAINTAINERS    |   1 +
>  cmd/Kconfig    |  10 +
>  cmd/Makefile   |   1 +
>  cmd/efidebug.c | 578 +++++++++++++++++++++++++++++++++++++++++++++++++
>  4 files changed, 590 insertions(+)
>  create mode 100644 cmd/efidebug.c
> 
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 0cce9db2660e..4fabb75eda37 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -471,6 +471,7 @@ F:	lib/efi*/
>  F:	test/py/tests/test_efi*
>  F:	test/unicode_ut.c
>  F:	cmd/bootefi.c
> +F:	cmd/efidebug.c
>  F:	cmd/nvedit_efi.c
>  F:	tools/file2include.c
>  
> diff --git a/cmd/Kconfig b/cmd/Kconfig
> index ddcdee44538d..88b086b074be 100644
> --- a/cmd/Kconfig
> +++ b/cmd/Kconfig
> @@ -1407,6 +1407,16 @@ 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"
>  	default y if LED
> diff --git a/cmd/Makefile b/cmd/Makefile
> index b9ee51869d48..acb85f49fba8 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
> diff --git a/cmd/efidebug.c b/cmd/efidebug.c
> new file mode 100644
> index 000000000000..ef3a66e393f0
> --- /dev/null
> +++ b/cmd/efidebug.c
> @@ -0,0 +1,578 @@
> +// 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>
> +
> +/**
> + * 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_set_variable(var_name16, &guid,

EFI_CALL()

> +			       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_set_variable(var_name16, &guid, 0, 0, NULL);

EFI_CALL()

> +		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_get_variable(var_name16, &guid, NULL, &size, NULL);

EFI_CALL() missing.

> +	if (ret == (int)EFI_BUFFER_TOO_SMALL) {
> +		data = malloc(size);
> +		ret = efi_get_variable(var_name16, &guid, NULL, &size, data);

same here

> +	}
> +	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_get_variable(L"BootOrder", &guid, NULL, &size, NULL);

EFI_CALL()

> +	if (ret == EFI_BUFFER_TOO_SMALL) {
> +		bootorder = malloc(size);
> +		ret = efi_get_variable(L"BootOrder", &guid, NULL, &size,
> +				       bootorder);

EFI_CALL()

> +	}
> +	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_get_variable(var_name16, &guid, NULL, &size, NULL);

EFI_CALL()

> +		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_get_variable(var_name16, &guid, NULL, &size, data);

EFI_CALL()

> +		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_set_variable(L"BootNext", &guid,

EFI_CALL()

> +			       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_set_variable(L"BootOrder", &guid,

EFI_CALL()

Best regards

Heinrich

> +			       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, "", ""),
> +};
> +
> +/**
> + * 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";
> +#endif
> +
> +U_BOOT_CMD(
> +	efidebug, 10, 0, do_efidebug,
> +	"Configure UEFI environment",
> +	efidebug_help_text
> +);
> 



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