u-boot/cmd/eficonfig.c
Masahisa Kojima 645502743a eficonfig: avoid SetVariable between GetNextVariableName calls
The current code calls efi_set_variable_int() to delete the
invalid boot option between calls to efi_get_next_variable_name_int(),
it may produce unpredictable results.

This commit moves removal of the invalid boot option outside
of the efi_get_next_variable_name_int() calls.
EFI_NOT_FOUND returned from efi_get_next_variable_name_int()
indicates we retrieved all EFI variables, it should be treated
as EFI_SUCEESS.

To address the checkpatch warning of too many leading tabs,
combine two if statement into one.

Signed-off-by: Masahisa Kojima <masahisa.kojima@linaro.org>
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
2022-12-20 16:06:48 +01:00

2580 lines
64 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Menu-driven UEFI Variable maintenance
*
* Copyright (c) 2022 Masahisa Kojima, Linaro Limited
*/
#include <ansi.h>
#include <common.h>
#include <charset.h>
#include <efi_loader.h>
#include <efi_load_initrd.h>
#include <efi_config.h>
#include <efi_variable.h>
#include <log.h>
#include <malloc.h>
#include <menu.h>
#include <sort.h>
#include <watchdog.h>
#include <asm/unaligned.h>
#include <linux/delay.h>
static struct efi_simple_text_input_protocol *cin;
#define EFICONFIG_DESCRIPTION_MAX 32
#define EFICONFIG_OPTIONAL_DATA_MAX 64
/**
* struct eficonfig_filepath_info - structure to be used to store file path
*
* @name: file or directory name
* @list: list structure
*/
struct eficonfig_filepath_info {
char *name;
struct list_head list;
};
/**
* struct eficonfig_boot_option - structure to be used for updating UEFI boot option
*
* @file_info: user selected file info
* @initrd_info: user selected initrd file info
* @boot_index: index of the boot option
* @description: pointer to the description string
* @optional_data: pointer to the optional_data
* @edit_completed: flag indicates edit complete
*/
struct eficonfig_boot_option {
struct eficonfig_select_file_info file_info;
struct eficonfig_select_file_info initrd_info;
unsigned int boot_index;
u16 *description;
u16 *optional_data;
bool edit_completed;
};
/**
* struct eficonfig_volume_entry_data - structure to be used to store volume info
*
* @file_info: pointer to file info structure
* @v: pointer to the protocol interface
* @dp: pointer to the device path
*/
struct eficonfig_volume_entry_data {
struct eficonfig_select_file_info *file_info;
struct efi_simple_file_system_protocol *v;
struct efi_device_path *dp;
};
/**
* struct eficonfig_file_entry_data - structure to be used to store file info
*
* @file_info: pointer to file info structure
* @is_directory: flag to identify the directory or file
* @file_name: name of directory or file
*/
struct eficonfig_file_entry_data {
struct eficonfig_select_file_info *file_info;
bool is_directory;
char *file_name;
};
/**
* struct eficonfig_boot_selection_data - structure to be used to select the boot option entry
*
* @boot_index: index of the boot option
* @selected: pointer to store the selected index in the BootOrder variable
*/
struct eficonfig_boot_selection_data {
u16 boot_index;
int *selected;
};
/**
* struct eficonfig_boot_order_data - structure to be used to update BootOrder variable
*
* @boot_index: boot option index
* @active: flag to include the boot option into BootOrder variable
*/
struct eficonfig_boot_order_data {
u32 boot_index;
bool active;
};
/**
* eficonfig_print_msg() - print message
*
* display the message to the user, user proceeds the screen
* with any key press.
*
* @items: pointer to the structure of each menu entry
* @count: the number of menu entry
* @menu_header: pointer to the menu header string
* Return: status code
*/
void eficonfig_print_msg(char *msg)
{
/* Flush input */
while (tstc())
getchar();
printf(ANSI_CURSOR_HIDE
ANSI_CLEAR_CONSOLE
ANSI_CURSOR_POSITION
"%s\n\n Press any key to continue", 3, 4, msg);
getchar();
}
/**
* eficonfig_print_entry() - print each menu entry
*
* @data: pointer to the data associated with each menu entry
*/
static void eficonfig_print_entry(void *data)
{
struct eficonfig_entry *entry = data;
int reverse = (entry->efi_menu->active == entry->num);
/* TODO: support scroll or page for many entries */
/*
* Move cursor to line where the entry will be drawn (entry->num)
* First 3 lines(menu header) + 1 empty line
*/
printf(ANSI_CURSOR_POSITION, entry->num + 4, 7);
if (reverse)
puts(ANSI_COLOR_REVERSE);
printf("%s", entry->title);
if (reverse)
puts(ANSI_COLOR_RESET);
}
/**
* eficonfig_display_statusline() - print status line
*
* @m: pointer to the menu structure
*/
static void eficonfig_display_statusline(struct menu *m)
{
struct eficonfig_entry *entry;
if (menu_default_choice(m, (void *)&entry) < 0)
return;
printf(ANSI_CURSOR_POSITION
"\n%s\n"
ANSI_CURSOR_POSITION ANSI_CLEAR_LINE ANSI_CURSOR_POSITION
" Press UP/DOWN to move, ENTER to select, ESC/CTRL+C to quit"
ANSI_CLEAR_LINE_TO_END ANSI_CURSOR_POSITION ANSI_CLEAR_LINE,
1, 1, entry->efi_menu->menu_header, entry->efi_menu->count + 5, 1,
entry->efi_menu->count + 6, 1, entry->efi_menu->count + 7, 1);
}
/**
* eficonfig_choice_entry() - user key input handler
*
* @data: pointer to the efimenu structure
* Return: key string to identify the selected entry
*/
static char *eficonfig_choice_entry(void *data)
{
int esc = 0;
struct list_head *pos, *n;
struct eficonfig_entry *entry;
enum bootmenu_key key = KEY_NONE;
struct efimenu *efi_menu = data;
while (1) {
bootmenu_loop((struct bootmenu_data *)efi_menu, &key, &esc);
switch (key) {
case KEY_UP:
if (efi_menu->active > 0)
--efi_menu->active;
/* no menu key selected, regenerate menu */
return NULL;
case KEY_DOWN:
if (efi_menu->active < efi_menu->count - 1)
++efi_menu->active;
/* no menu key selected, regenerate menu */
return NULL;
case KEY_SELECT:
list_for_each_safe(pos, n, &efi_menu->list) {
entry = list_entry(pos, struct eficonfig_entry, list);
if (entry->num == efi_menu->active)
return entry->key;
}
break;
case KEY_QUIT:
/* Quit by choosing the last entry */
entry = list_last_entry(&efi_menu->list, struct eficonfig_entry, list);
return entry->key;
default:
/* Pressed key is not valid, no need to regenerate the menu */
break;
}
}
}
/**
* eficonfig_destroy() - destroy efimenu
*
* @efi_menu: pointer to the efimenu structure
*/
void eficonfig_destroy(struct efimenu *efi_menu)
{
struct list_head *pos, *n;
struct eficonfig_entry *entry;
if (!efi_menu)
return;
list_for_each_safe(pos, n, &efi_menu->list) {
entry = list_entry(pos, struct eficonfig_entry, list);
free(entry->title);
list_del(&entry->list);
free(entry);
}
free(efi_menu->menu_header);
free(efi_menu);
}
/**
* eficonfig_process_quit() - callback function for "Quit" entry
*
* @data: pointer to the data
* Return: status code
*/
efi_status_t eficonfig_process_quit(void *data)
{
return EFI_ABORTED;
}
/**
* eficonfig_append_menu_entry() - append menu item
*
* @efi_menu: pointer to the efimenu structure
* @title: pointer to the entry title
* @func: callback of each entry
* @data: pointer to the data to be passed to each entry callback
* Return: status code
*/
efi_status_t eficonfig_append_menu_entry(struct efimenu *efi_menu,
char *title, eficonfig_entry_func func,
void *data)
{
struct eficonfig_entry *entry;
if (efi_menu->count >= EFICONFIG_ENTRY_NUM_MAX)
return EFI_OUT_OF_RESOURCES;
entry = calloc(1, sizeof(struct eficonfig_entry));
if (!entry)
return EFI_OUT_OF_RESOURCES;
entry->title = title;
sprintf(entry->key, "%d", efi_menu->count);
entry->efi_menu = efi_menu;
entry->func = func;
entry->data = data;
entry->num = efi_menu->count++;
list_add_tail(&entry->list, &efi_menu->list);
return EFI_SUCCESS;
}
/**
* eficonfig_append_quit_entry() - append quit entry
*
* @efi_menu: pointer to the efimenu structure
* Return: status code
*/
efi_status_t eficonfig_append_quit_entry(struct efimenu *efi_menu)
{
char *title;
efi_status_t ret;
title = strdup("Quit");
if (!title)
return EFI_OUT_OF_RESOURCES;
ret = eficonfig_append_menu_entry(efi_menu, title, eficonfig_process_quit, NULL);
if (ret != EFI_SUCCESS)
free(title);
return ret;
}
/**
* eficonfig_create_fixed_menu() - create fixed entry menu structure
*
* @items: pointer to the menu entry item
* @count: the number of menu entry
* Return: pointer to the efimenu structure
*/
void *eficonfig_create_fixed_menu(const struct eficonfig_item *items, int count)
{
u32 i;
char *title;
efi_status_t ret;
struct efimenu *efi_menu;
const struct eficonfig_item *iter = items;
efi_menu = calloc(1, sizeof(struct efimenu));
if (!efi_menu)
return NULL;
INIT_LIST_HEAD(&efi_menu->list);
for (i = 0; i < count; i++, iter++) {
title = strdup(iter->title);
if (!title)
goto out;
ret = eficonfig_append_menu_entry(efi_menu, title, iter->func, iter->data);
if (ret != EFI_SUCCESS) {
free(title);
goto out;
}
}
return efi_menu;
out:
eficonfig_destroy(efi_menu);
return NULL;
}
/**
* eficonfig_process_common() - main handler for UEFI menu
*
* Construct the structures required to show the menu, then handle
* the user input interacting with u-boot menu functions.
*
* @efi_menu: pointer to the efimenu structure
* @menu_header: pointer to the menu header string
* Return: status code
*/
efi_status_t eficonfig_process_common(struct efimenu *efi_menu, char *menu_header)
{
struct menu *menu;
void *choice = NULL;
struct list_head *pos, *n;
struct eficonfig_entry *entry;
efi_status_t ret = EFI_SUCCESS;
if (efi_menu->count > EFICONFIG_ENTRY_NUM_MAX)
return EFI_OUT_OF_RESOURCES;
efi_menu->delay = -1;
efi_menu->active = 0;
if (menu_header) {
efi_menu->menu_header = strdup(menu_header);
if (!efi_menu->menu_header)
return EFI_OUT_OF_RESOURCES;
}
menu = menu_create(NULL, 0, 1, eficonfig_display_statusline,
eficonfig_print_entry, eficonfig_choice_entry,
efi_menu);
if (!menu)
return EFI_INVALID_PARAMETER;
list_for_each_safe(pos, n, &efi_menu->list) {
entry = list_entry(pos, struct eficonfig_entry, list);
if (!menu_item_add(menu, entry->key, entry)) {
ret = EFI_INVALID_PARAMETER;
goto out;
}
}
entry = list_first_entry_or_null(&efi_menu->list, struct eficonfig_entry, list);
if (entry)
menu_default_set(menu, entry->key);
printf(ANSI_CURSOR_HIDE
ANSI_CLEAR_CONSOLE
ANSI_CURSOR_POSITION, 1, 1);
if (menu_get_choice(menu, &choice)) {
entry = choice;
if (entry->func)
ret = entry->func(entry->data);
}
out:
menu_destroy(menu);
printf(ANSI_CLEAR_CONSOLE
ANSI_CURSOR_POSITION
ANSI_CURSOR_SHOW, 1, 1);
return ret;
}
/**
* eficonfig_volume_selected() - handler of volume selection
*
* @data: pointer to the data of selected entry
* Return: status code
*/
static efi_status_t eficonfig_volume_selected(void *data)
{
struct eficonfig_volume_entry_data *info = data;
if (info) {
info->file_info->current_volume = info->v;
info->file_info->dp_volume = info->dp;
}
return EFI_SUCCESS;
}
/**
* eficonfig_create_device_path() - create device path
*
* @dp_volume: pointer to the volume
* @current_path: pointer to the file path u16 string
* Return:
* device path or NULL. Caller must free the returned value
*/
struct efi_device_path *eficonfig_create_device_path(struct efi_device_path *dp_volume,
u16 *current_path)
{
char *p;
void *buf;
efi_uintn_t fp_size;
struct efi_device_path *dp;
struct efi_device_path_file_path *fp;
fp_size = sizeof(struct efi_device_path) + u16_strsize(current_path);
buf = calloc(1, fp_size + sizeof(END));
if (!buf)
return NULL;
fp = buf;
fp->dp.type = DEVICE_PATH_TYPE_MEDIA_DEVICE,
fp->dp.sub_type = DEVICE_PATH_SUB_TYPE_FILE_PATH,
fp->dp.length = (u16)fp_size;
u16_strcpy(fp->str, current_path);
p = buf;
p += fp_size;
*((struct efi_device_path *)p) = END;
dp = efi_dp_append(dp_volume, (struct efi_device_path *)buf);
free(buf);
return dp;
}
/**
* eficonfig_file_selected() - handler of file selection
*
* @data: pointer to the data of selected entry
* Return: status code
*/
static efi_status_t eficonfig_file_selected(void *data)
{
u16 *tmp;
struct eficonfig_file_entry_data *info = data;
if (!info)
return EFI_INVALID_PARAMETER;
if (!strcmp(info->file_name, "..\\")) {
struct eficonfig_filepath_info *iter;
struct list_head *pos, *n;
int is_last;
char *filepath;
tmp = info->file_info->current_path;
memset(info->file_info->current_path, 0, EFICONFIG_FILE_PATH_BUF_SIZE);
filepath = calloc(1, EFICONFIG_FILE_PATH_MAX);
if (!filepath)
return EFI_OUT_OF_RESOURCES;
list_for_each_safe(pos, n, &info->file_info->filepath_list) {
iter = list_entry(pos, struct eficonfig_filepath_info, list);
is_last = list_is_last(&iter->list, &info->file_info->filepath_list);
if (is_last) {
list_del(&iter->list);
free(iter->name);
free(iter);
break;
}
strlcat(filepath, iter->name, EFICONFIG_FILE_PATH_MAX);
}
utf8_utf16_strcpy(&tmp, filepath);
} else {
size_t new_len;
struct eficonfig_filepath_info *filepath_info;
new_len = u16_strlen(info->file_info->current_path) +
strlen(info->file_name);
if (new_len >= EFICONFIG_FILE_PATH_MAX) {
eficonfig_print_msg("File path is too long!");
return EFI_INVALID_PARAMETER;
}
tmp = &info->file_info->current_path[u16_strlen(info->file_info->current_path)];
utf8_utf16_strcpy(&tmp, info->file_name);
filepath_info = calloc(1, sizeof(struct eficonfig_filepath_info));
if (!filepath_info)
return EFI_OUT_OF_RESOURCES;
filepath_info->name = strdup(info->file_name);
if (!filepath_info->name) {
free(filepath_info);
return EFI_OUT_OF_RESOURCES;
}
list_add_tail(&filepath_info->list, &info->file_info->filepath_list);
if (!info->is_directory)
info->file_info->file_selected = true;
}
return EFI_SUCCESS;
}
/**
* eficonfig_select_volume() - construct the volume selection menu
*
* @file_info: pointer to the file selection structure
* Return: status code
*/
static efi_status_t eficonfig_select_volume(struct eficonfig_select_file_info *file_info)
{
u32 i;
efi_status_t ret;
efi_uintn_t count;
struct efimenu *efi_menu;
struct list_head *pos, *n;
struct efi_handler *handler;
struct eficonfig_entry *entry;
struct efi_device_path *device_path;
efi_handle_t *volume_handles = NULL;
struct efi_simple_file_system_protocol *v;
ret = efi_locate_handle_buffer_int(BY_PROTOCOL, &efi_simple_file_system_protocol_guid,
NULL, &count, (efi_handle_t **)&volume_handles);
if (ret != EFI_SUCCESS) {
eficonfig_print_msg("No block device found!");
return ret;
}
efi_menu = calloc(1, sizeof(struct efimenu));
if (!efi_menu)
return EFI_OUT_OF_RESOURCES;
INIT_LIST_HEAD(&efi_menu->list);
for (i = 0; i < count; i++) {
char *devname;
struct efi_block_io *block_io;
struct eficonfig_volume_entry_data *info;
if (efi_menu->count >= EFICONFIG_ENTRY_NUM_MAX - 1)
break;
ret = efi_search_protocol(volume_handles[i],
&efi_simple_file_system_protocol_guid, &handler);
if (ret != EFI_SUCCESS)
continue;
ret = efi_protocol_open(handler, (void **)&v, efi_root, NULL,
EFI_OPEN_PROTOCOL_GET_PROTOCOL);
if (ret != EFI_SUCCESS)
continue;
ret = efi_search_protocol(volume_handles[i], &efi_guid_device_path, &handler);
if (ret != EFI_SUCCESS)
continue;
ret = efi_protocol_open(handler, (void **)&device_path,
efi_root, NULL, EFI_OPEN_PROTOCOL_GET_PROTOCOL);
if (ret != EFI_SUCCESS)
continue;
ret = efi_search_protocol(volume_handles[i], &efi_block_io_guid, &handler);
if (ret != EFI_SUCCESS)
continue;
ret = efi_protocol_open(handler, (void **)&block_io,
efi_root, NULL, EFI_OPEN_PROTOCOL_GET_PROTOCOL);
if (ret != EFI_SUCCESS)
continue;
info = calloc(1, sizeof(struct eficonfig_volume_entry_data));
if (!info) {
ret = EFI_OUT_OF_RESOURCES;
goto out;
}
devname = calloc(1, BOOTMENU_DEVICE_NAME_MAX);
if (!devname) {
free(info);
ret = EFI_OUT_OF_RESOURCES;
goto out;
}
ret = efi_disk_get_device_name(volume_handles[i], devname,
BOOTMENU_DEVICE_NAME_MAX);
if (ret != EFI_SUCCESS) {
free(info);
goto out;
}
info->v = v;
info->dp = device_path;
info->file_info = file_info;
ret = eficonfig_append_menu_entry(efi_menu, devname, eficonfig_volume_selected,
info);
if (ret != EFI_SUCCESS) {
free(info);
goto out;
}
}
ret = eficonfig_append_quit_entry(efi_menu);
if (ret != EFI_SUCCESS)
goto out;
ret = eficonfig_process_common(efi_menu, " ** Select Volume **");
out:
efi_free_pool(volume_handles);
list_for_each_safe(pos, n, &efi_menu->list) {
entry = list_entry(pos, struct eficonfig_entry, list);
free(entry->data);
}
eficonfig_destroy(efi_menu);
return ret;
}
/**
* sort_file() - sort the file name in ascii order
*
* @data1: pointer to the file entry data
* @data2: pointer to the file entry data
* Return: -1 if the data1 file name is less than data2 file name,
* 0 if both file name match,
* 1 if the data1 file name is greater thant data2 file name.
*/
static int sort_file(const void *arg1, const void *arg2)
{
const struct eficonfig_file_entry_data *data1, *data2;
data1 = *((const struct eficonfig_file_entry_data **)arg1);
data2 = *((const struct eficonfig_file_entry_data **)arg2);
return strcasecmp(data1->file_name, data2->file_name);
}
/**
* eficonfig_create_file_entry() - construct the file menu entry
*
* @efi_menu: pointer to the efimenu structure
* @count: number of the directory and file
* @tmp_infos: pointer to the entry data array
* @f: pointer to the file handle
* @buf: pointer to the buffer to store the directory information
* @file_info: pointer to the file selection structure
* Return: status code
*/
static efi_status_t
eficonfig_create_file_entry(struct efimenu *efi_menu, u32 count,
struct eficonfig_file_entry_data **tmp_infos,
struct efi_file_handle *f, struct efi_file_info *buf,
struct eficonfig_select_file_info *file_info)
{
char *name, *p;
efi_uintn_t len;
efi_status_t ret;
u32 i, entry_num = 0;
struct eficonfig_file_entry_data *info;
EFI_CALL(f->setpos(f, 0));
/* Read directory and construct menu structure */
for (i = 0; i < count; i++) {
if (entry_num >= EFICONFIG_ENTRY_NUM_MAX - 1)
break;
len = sizeof(struct efi_file_info) + EFICONFIG_FILE_PATH_BUF_SIZE;
ret = EFI_CALL(f->read(f, &len, buf));
if (ret != EFI_SUCCESS || len == 0)
break;
info = calloc(1, sizeof(struct eficonfig_file_entry_data));
if (!info) {
ret = EFI_OUT_OF_RESOURCES;
goto out;
}
/* append '\\' at the end of directory name */
name = calloc(1, utf16_utf8_strlen(buf->file_name) + 2);
if (!name) {
ret = EFI_OUT_OF_RESOURCES;
free(info);
goto out;
}
p = name;
utf16_utf8_strcpy(&p, buf->file_name);
if (buf->attribute & EFI_FILE_DIRECTORY) {
/* filter out u'.' */
if (!u16_strcmp(buf->file_name, u".")) {
free(info);
free(name);
continue;
}
name[u16_strlen(buf->file_name)] = '\\';
info->is_directory = true;
}
info->file_name = name;
info->file_info = file_info;
tmp_infos[entry_num++] = info;
}
qsort(tmp_infos, entry_num, sizeof(*tmp_infos),
(int (*)(const void *, const void *))sort_file);
for (i = 0; i < entry_num; i++) {
ret = eficonfig_append_menu_entry(efi_menu, tmp_infos[i]->file_name,
eficonfig_file_selected, tmp_infos[i]);
if (ret != EFI_SUCCESS)
goto out;
}
out:
return ret;
}
/**
* eficonfig_show_file_selection() - construct the file selection menu
*
* @file_info: pointer to the file selection structure
* @root: pointer to the file handle
* Return: status code
*/
static efi_status_t eficonfig_show_file_selection(struct eficonfig_select_file_info *file_info,
struct efi_file_handle *root)
{
u32 count = 0, i;
efi_uintn_t len;
efi_status_t ret;
struct efimenu *efi_menu;
struct efi_file_handle *f;
struct efi_file_info *buf;
struct eficonfig_file_entry_data **tmp_infos;
buf = calloc(1, sizeof(struct efi_file_info) + EFICONFIG_FILE_PATH_BUF_SIZE);
if (!buf)
return EFI_OUT_OF_RESOURCES;
while (!file_info->file_selected) {
efi_menu = calloc(1, sizeof(struct efimenu));
if (!efi_menu) {
ret = EFI_OUT_OF_RESOURCES;
goto out;
}
INIT_LIST_HEAD(&efi_menu->list);
ret = EFI_CALL(root->open(root, &f, file_info->current_path,
EFI_FILE_MODE_READ, 0));
if (ret != EFI_SUCCESS) {
eficonfig_print_msg("Reading volume failed!");
free(efi_menu);
ret = EFI_ABORTED;
goto out;
}
/* Count the number of directory entries */
for (;;) {
len = sizeof(struct efi_file_info) + EFICONFIG_FILE_PATH_BUF_SIZE;
ret = EFI_CALL(f->read(f, &len, buf));
if (ret != EFI_SUCCESS || len == 0)
break;
count++;
}
/* allocate array to sort the entry */
tmp_infos = calloc(count, sizeof(*tmp_infos));
if (!tmp_infos) {
ret = EFI_OUT_OF_RESOURCES;
goto err;
}
ret = eficonfig_create_file_entry(efi_menu, count, tmp_infos,
f, buf, file_info);
if (ret != EFI_SUCCESS)
goto err;
ret = eficonfig_append_quit_entry(efi_menu);
if (ret != EFI_SUCCESS)
goto err;
ret = eficonfig_process_common(efi_menu, " ** Select File **");
err:
EFI_CALL(f->close(f));
eficonfig_destroy(efi_menu);
if (tmp_infos) {
for (i = 0; i < count; i++)
free(tmp_infos[i]);
}
free(tmp_infos);
if (ret != EFI_SUCCESS)
break;
}
out:
free(buf);
return ret;
}
/**
* handle_user_input() - handle user input
*
* @buf: pointer to the buffer
* @buf_size: size of the buffer
* @cursor_col: cursor column for user input
* @msg: pointer to the string to display
* Return: status code
*/
static efi_status_t handle_user_input(u16 *buf, int buf_size,
int cursor_col, char *msg)
{
u16 *tmp;
efi_status_t ret;
printf(ANSI_CLEAR_CONSOLE
ANSI_CURSOR_POSITION
"%s"
ANSI_CURSOR_POSITION
" Press ENTER to complete, ESC/CTRL+C to quit",
0, 1, msg, 8, 1);
/* tmp is used to accept user cancel */
tmp = calloc(1, buf_size * sizeof(u16));
if (!tmp)
return EFI_OUT_OF_RESOURCES;
ret = efi_console_get_u16_string(cin, tmp, buf_size, NULL, 4, cursor_col);
if (ret == EFI_SUCCESS)
u16_strcpy(buf, tmp);
free(tmp);
/* to stay the parent menu */
ret = (ret == EFI_ABORTED) ? EFI_NOT_READY : ret;
return ret;
}
/**
* eficonfig_boot_add_enter_description() - handle user input for description
*
* @data: pointer to the internal boot option structure
* Return: status code
*/
static efi_status_t eficonfig_boot_add_enter_description(void *data)
{
struct eficonfig_boot_option *bo = data;
return handle_user_input(bo->description, EFICONFIG_DESCRIPTION_MAX, 22,
"\n ** Edit Description **\n"
"\n"
" enter description: ");
}
/**
* eficonfig_boot_add_optional_data() - handle user input for optional data
*
* @data: pointer to the internal boot option structure
* Return: status code
*/
static efi_status_t eficonfig_boot_add_optional_data(void *data)
{
struct eficonfig_boot_option *bo = data;
return handle_user_input(bo->optional_data, EFICONFIG_OPTIONAL_DATA_MAX, 24,
"\n ** Edit Optional Data **\n"
"\n"
" enter optional data:");
}
/**
* eficonfig_boot_edit_save() - handler to save the boot option
*
* @data: pointer to the internal boot option structure
* Return: status code
*/
static efi_status_t eficonfig_boot_edit_save(void *data)
{
struct eficonfig_boot_option *bo = data;
if (u16_strlen(bo->description) == 0) {
eficonfig_print_msg("Boot Description is empty!");
bo->edit_completed = false;
return EFI_NOT_READY;
}
if (u16_strlen(bo->file_info.current_path) == 0) {
eficonfig_print_msg("File is not selected!");
bo->edit_completed = false;
return EFI_NOT_READY;
}
bo->edit_completed = true;
return EFI_SUCCESS;
}
/**
* eficonfig_process_clear_file_selection() - callback function for "Clear" entry
*
* @data: pointer to the data
* Return: status code
*/
efi_status_t eficonfig_process_clear_file_selection(void *data)
{
struct eficonfig_select_file_info *file_info = data;
/* clear the existing file information */
file_info->current_volume = NULL;
file_info->current_path[0] = u'\0';
file_info->dp_volume = NULL;
return EFI_ABORTED;
}
static struct eficonfig_item select_file_menu_items[] = {
{"Select File", eficonfig_process_select_file},
{"Clear", eficonfig_process_clear_file_selection},
{"Quit", eficonfig_process_quit},
};
/**
* eficonfig_process_show_file_option() - display select file option
*
* @file_info: pointer to the file information structure
* Return: status code
*/
efi_status_t eficonfig_process_show_file_option(void *data)
{
efi_status_t ret;
struct efimenu *efi_menu;
select_file_menu_items[0].data = data;
select_file_menu_items[1].data = data;
efi_menu = eficonfig_create_fixed_menu(select_file_menu_items,
ARRAY_SIZE(select_file_menu_items));
if (!efi_menu)
return EFI_OUT_OF_RESOURCES;
ret = eficonfig_process_common(efi_menu, " ** Update File **");
if (ret != EFI_SUCCESS) /* User selects "Clear" or "Quit" */
ret = EFI_NOT_READY;
eficonfig_destroy(efi_menu);
return ret;
}
/**
* eficonfig_process_select_file() - handle user file selection
*
* @data: pointer to the data
* Return: status code
*/
efi_status_t eficonfig_process_select_file(void *data)
{
size_t len;
efi_status_t ret;
struct list_head *pos, *n;
struct efi_file_handle *root;
struct eficonfig_filepath_info *item;
struct eficonfig_select_file_info *tmp = NULL;
struct eficonfig_select_file_info *file_info = data;
tmp = calloc(1, sizeof(struct eficonfig_select_file_info));
if (!tmp)
return EFI_OUT_OF_RESOURCES;
tmp->current_path = calloc(1, EFICONFIG_FILE_PATH_BUF_SIZE);
if (!tmp->current_path) {
free(tmp);
return EFI_OUT_OF_RESOURCES;
}
INIT_LIST_HEAD(&tmp->filepath_list);
while (!tmp->file_selected) {
tmp->current_volume = NULL;
memset(tmp->current_path, 0, EFICONFIG_FILE_PATH_BUF_SIZE);
ret = eficonfig_select_volume(tmp);
if (ret != EFI_SUCCESS)
goto out;
if (!tmp->current_volume)
return EFI_INVALID_PARAMETER;
ret = EFI_CALL(tmp->current_volume->open_volume(tmp->current_volume, &root));
if (ret != EFI_SUCCESS)
goto out;
ret = eficonfig_show_file_selection(tmp, root);
if (ret == EFI_ABORTED)
continue;
if (ret != EFI_SUCCESS)
goto out;
}
out:
if (ret == EFI_SUCCESS) {
len = u16_strlen(tmp->current_path);
len = (len >= EFICONFIG_FILE_PATH_MAX) ? (EFICONFIG_FILE_PATH_MAX - 1) : len;
memcpy(file_info->current_path, tmp->current_path, len * sizeof(u16));
file_info->current_path[len] = u'\0';
file_info->current_volume = tmp->current_volume;
file_info->dp_volume = tmp->dp_volume;
}
list_for_each_safe(pos, n, &tmp->filepath_list) {
item = list_entry(pos, struct eficonfig_filepath_info, list);
list_del(&item->list);
free(item->name);
free(item);
}
free(tmp->current_path);
free(tmp);
/* to stay the parent menu */
ret = (ret == EFI_ABORTED) ? EFI_NOT_READY : ret;
return ret;
}
/**
* eficonfig_get_unused_bootoption() - get unused "Boot####" index
*
* @buf: pointer to the buffer to store boot option variable name
* @buf_size: buffer size
* @index: pointer to store the index in the BootOrder variable
* Return: status code
*/
efi_status_t eficonfig_get_unused_bootoption(u16 *buf, efi_uintn_t buf_size,
unsigned int *index)
{
u32 i;
efi_status_t ret;
efi_uintn_t size;
if (buf_size < u16_strsize(u"Boot####"))
return EFI_BUFFER_TOO_SMALL;
for (i = 0; i <= 0xFFFF; i++) {
size = 0;
efi_create_indexed_name(buf, buf_size, "Boot", i);
ret = efi_get_variable_int(buf, &efi_global_variable_guid,
NULL, &size, NULL, NULL);
if (ret == EFI_BUFFER_TOO_SMALL)
continue;
else
break;
}
if (i > 0xFFFF)
return EFI_OUT_OF_RESOURCES;
*index = i;
return EFI_SUCCESS;
}
/**
* eficonfig_set_boot_option() - set boot option
*
* @varname: pointer to variable name
* @dp: pointer to device path
* @label: pointer to label string
* @optional_data: pointer to optional data
* Return: status code
*/
static efi_status_t eficonfig_set_boot_option(u16 *varname, struct efi_device_path *dp,
efi_uintn_t dp_size, u16 *label, char *optional_data)
{
void *p = NULL;
efi_status_t ret;
efi_uintn_t size;
struct efi_load_option lo;
lo.file_path = dp;
lo.file_path_length = dp_size;
lo.attributes = LOAD_OPTION_ACTIVE;
lo.optional_data = optional_data;
lo.label = label;
size = efi_serialize_load_option(&lo, (u8 **)&p);
if (!size)
return EFI_INVALID_PARAMETER;
ret = efi_set_variable_int(varname, &efi_global_variable_guid,
EFI_VARIABLE_NON_VOLATILE |
EFI_VARIABLE_BOOTSERVICE_ACCESS |
EFI_VARIABLE_RUNTIME_ACCESS,
size, p, false);
free(p);
return ret;
}
/**
* eficonfig_append_bootorder() - append new boot option in BootOrder variable
*
* @index: "Boot####" index to append to BootOrder variable
* Return: status code
*/
efi_status_t eficonfig_append_bootorder(u16 index)
{
u16 *bootorder;
efi_status_t ret;
u16 *new_bootorder = NULL;
efi_uintn_t last, size, new_size;
/* append new boot option */
bootorder = efi_get_var(u"BootOrder", &efi_global_variable_guid, &size);
last = size / sizeof(u16);
new_size = size + sizeof(u16);
new_bootorder = calloc(1, new_size);
if (!new_bootorder) {
ret = EFI_OUT_OF_RESOURCES;
goto out;
}
memcpy(new_bootorder, bootorder, size);
new_bootorder[last] = index;
ret = efi_set_variable_int(u"BootOrder", &efi_global_variable_guid,
EFI_VARIABLE_NON_VOLATILE |
EFI_VARIABLE_BOOTSERVICE_ACCESS |
EFI_VARIABLE_RUNTIME_ACCESS,
new_size, new_bootorder, false);
if (ret != EFI_SUCCESS)
goto out;
out:
free(bootorder);
free(new_bootorder);
return ret;
}
/**
* create_boot_option_entry() - create boot option entry
*
* @efi_menu: pointer to the efimenu structure
* @title: pointer to the entry title
* @val: pointer to boot option label
* @func: callback of each entry
* @data: pointer to the data to be passed to each entry callback
* Return: status code
*/
static efi_status_t create_boot_option_entry(struct efimenu *efi_menu, char *title, u16 *val,
eficonfig_entry_func func, void *data)
{
u32 len;
char *p, *buf;
len = strlen(title) + 1;
if (val)
len += utf16_utf8_strlen(val);
buf = calloc(1, len);
if (!buf)
return EFI_OUT_OF_RESOURCES;
strcpy(buf, title);
if (val) {
p = buf + strlen(title);
utf16_utf8_strcpy(&p, val);
}
return eficonfig_append_menu_entry(efi_menu, buf, func, data);
}
/**
* prepare_file_selection_entry() - prepare file selection entry
*
* @efi_menu: pointer to the efimenu structure
* @title: pointer to the title string
* @file_info: pointer to the file info
* Return: status code
*/
static efi_status_t prepare_file_selection_entry(struct efimenu *efi_menu, char *title,
struct eficonfig_select_file_info *file_info)
{
u32 len;
efi_status_t ret;
u16 *file_name = NULL, *p;
efi_handle_t handle;
char *devname;
devname = calloc(1, EFICONFIG_VOLUME_PATH_MAX + 1);
if (!devname)
return EFI_OUT_OF_RESOURCES;
/* get the device name only when the user already selected the file path */
handle = efi_dp_find_obj(file_info->dp_volume, NULL, NULL);
if (handle) {
ret = efi_disk_get_device_name(handle, devname, EFICONFIG_VOLUME_PATH_MAX);
if (ret != EFI_SUCCESS)
goto out;
}
/*
* If the preconfigured volume does not exist in the system, display the text
* converted volume device path instead of U-Boot friendly name(e.g. "usb 0:1").
*/
if (!handle && file_info->dp_volume) {
u16 *dp_str;
char *q = devname;
dp_str = efi_dp_str(file_info->dp_volume);
if (dp_str)
utf16_utf8_strncpy(&q, dp_str, EFICONFIG_VOLUME_PATH_MAX);
efi_free_pool(dp_str);
}
/* append u'/' to devname, it is just for display purpose. */
if (file_info->current_path[0] != u'\0' && file_info->current_path[0] != u'/')
strlcat(devname, "/", EFICONFIG_VOLUME_PATH_MAX + 1);
len = strlen(devname);
len += utf16_utf8_strlen(file_info->current_path) + 1;
file_name = calloc(1, len * sizeof(u16));
if (!file_name) {
ret = EFI_OUT_OF_RESOURCES;
goto out;
}
p = file_name;
utf8_utf16_strcpy(&p, devname);
u16_strlcat(file_name, file_info->current_path, len);
ret = create_boot_option_entry(efi_menu, title, file_name,
eficonfig_process_show_file_option, file_info);
out:
free(devname);
free(file_name);
return ret;
}
/**
* eficonfig_show_boot_option() - prepare menu entry for editing boot option
*
* Construct the structures to create edit boot option menu
*
* @bo: pointer to the boot option
* @header_str: pointer to the header string
* Return: status code
*/
static efi_status_t eficonfig_show_boot_option(struct eficonfig_boot_option *bo,
char *header_str)
{
efi_status_t ret;
struct efimenu *efi_menu;
efi_menu = calloc(1, sizeof(struct efimenu));
if (!efi_menu)
return EFI_OUT_OF_RESOURCES;
INIT_LIST_HEAD(&efi_menu->list);
ret = create_boot_option_entry(efi_menu, "Description: ", bo->description,
eficonfig_boot_add_enter_description, bo);
if (ret != EFI_SUCCESS)
goto out;
ret = prepare_file_selection_entry(efi_menu, "File: ", &bo->file_info);
if (ret != EFI_SUCCESS)
goto out;
ret = prepare_file_selection_entry(efi_menu, "Initrd File: ", &bo->initrd_info);
if (ret != EFI_SUCCESS)
goto out;
ret = create_boot_option_entry(efi_menu, "Optional Data: ", bo->optional_data,
eficonfig_boot_add_optional_data, bo);
if (ret != EFI_SUCCESS)
goto out;
ret = create_boot_option_entry(efi_menu, "Save", NULL,
eficonfig_boot_edit_save, bo);
if (ret != EFI_SUCCESS)
goto out;
ret = create_boot_option_entry(efi_menu, "Quit", NULL,
eficonfig_process_quit, NULL);
if (ret != EFI_SUCCESS)
goto out;
ret = eficonfig_process_common(efi_menu, header_str);
out:
eficonfig_destroy(efi_menu);
return ret;
}
/**
* fill_file_info() - fill the file info from efi_device_path structure
*
* @dp: pointer to the device path
* @file_info: pointer to the file info structure
* @device_dp: pointer to the volume device path
*/
static void fill_file_info(struct efi_device_path *dp,
struct eficonfig_select_file_info *file_info,
struct efi_device_path *device_dp)
{
u16 *file_str, *p;
struct efi_device_path *file_dp = NULL;
efi_dp_split_file_path(dp, &device_dp, &file_dp);
file_info->dp_volume = device_dp;
if (file_dp) {
file_str = efi_dp_str(file_dp);
/*
* efi_convert_device_path_to_text() automatically adds u'/' at the
* beginning of file name, remove u'/' before copying to current_path
*/
p = file_str;
if (p[0] == u'/')
p++;
u16_strcpy(file_info->current_path, p);
efi_free_pool(file_dp);
efi_free_pool(file_str);
}
}
/**
* eficonfig_edit_boot_option() - prepare boot option structure for editing
*
* Construct the boot option structure and copy the existing value
*
* @varname: pointer to the UEFI variable name
* @bo: pointer to the boot option
* @load_option: pointer to the load option
* @load_option_size: size of the load option
* @header_str: pointer to the header string
* Return : status code
*/
static efi_status_t eficonfig_edit_boot_option(u16 *varname, struct eficonfig_boot_option *bo,
void *load_option, efi_uintn_t load_option_size,
char *header_str)
{
size_t len;
efi_status_t ret;
char *tmp = NULL, *p;
struct efi_load_option lo = {0};
efi_uintn_t final_dp_size;
struct efi_device_path *dp = NULL;
efi_uintn_t size = load_option_size;
struct efi_device_path *final_dp = NULL;
struct efi_device_path *device_dp = NULL;
struct efi_device_path *initrd_dp = NULL;
struct efi_device_path *initrd_device_dp = NULL;
const struct efi_initrd_dp id_dp = {
.vendor = {
{
DEVICE_PATH_TYPE_MEDIA_DEVICE,
DEVICE_PATH_SUB_TYPE_VENDOR_PATH,
sizeof(id_dp.vendor),
},
EFI_INITRD_MEDIA_GUID,
},
.end = {
DEVICE_PATH_TYPE_END,
DEVICE_PATH_SUB_TYPE_END,
sizeof(id_dp.end),
}
};
bo->file_info.current_path = calloc(1, EFICONFIG_FILE_PATH_BUF_SIZE);
if (!bo->file_info.current_path) {
ret = EFI_OUT_OF_RESOURCES;
goto out;
}
bo->initrd_info.current_path = calloc(1, EFICONFIG_FILE_PATH_BUF_SIZE);
if (!bo->file_info.current_path) {
ret = EFI_OUT_OF_RESOURCES;
goto out;
}
bo->description = calloc(1, EFICONFIG_DESCRIPTION_MAX * sizeof(u16));
if (!bo->description) {
ret = EFI_OUT_OF_RESOURCES;
goto out;
}
bo->optional_data = calloc(1, EFICONFIG_OPTIONAL_DATA_MAX * sizeof(u16));
if (!bo->optional_data) {
ret = EFI_OUT_OF_RESOURCES;
goto out;
}
/* copy the preset value */
if (load_option) {
ret = efi_deserialize_load_option(&lo, load_option, &size);
if (ret != EFI_SUCCESS)
goto out;
if (!lo.label) {
ret = EFI_INVALID_PARAMETER;
goto out;
}
/* truncate the long label string */
if (u16_strlen(lo.label) >= EFICONFIG_DESCRIPTION_MAX)
lo.label[EFICONFIG_DESCRIPTION_MAX - 1] = u'\0';
u16_strcpy(bo->description, lo.label);
/* EFI image file path is a first instance */
if (lo.file_path)
fill_file_info(lo.file_path, &bo->file_info, device_dp);
/* Initrd file path(optional) is placed at second instance. */
initrd_dp = efi_dp_from_lo(&lo, &efi_lf2_initrd_guid);
if (initrd_dp) {
fill_file_info(initrd_dp, &bo->initrd_info, initrd_device_dp);
efi_free_pool(initrd_dp);
}
if (size > 0)
memcpy(bo->optional_data, lo.optional_data, size);
}
while (1) {
ret = eficonfig_show_boot_option(bo, header_str);
if (ret == EFI_SUCCESS && bo->edit_completed)
break;
if (ret == EFI_NOT_READY)
continue;
if (ret != EFI_SUCCESS)
goto out;
}
if (bo->initrd_info.dp_volume) {
dp = eficonfig_create_device_path(bo->initrd_info.dp_volume,
bo->initrd_info.current_path);
if (!dp) {
ret = EFI_OUT_OF_RESOURCES;
goto out;
}
initrd_dp = efi_dp_append((const struct efi_device_path *)&id_dp, dp);
efi_free_pool(dp);
}
dp = eficonfig_create_device_path(bo->file_info.dp_volume, bo->file_info.current_path);
if (!dp) {
ret = EFI_OUT_OF_RESOURCES;
goto out;
}
final_dp_size = efi_dp_size(dp) + sizeof(END);
if (initrd_dp) {
final_dp = efi_dp_concat(dp, initrd_dp);
final_dp_size += efi_dp_size(initrd_dp) + sizeof(END);
} else {
final_dp = efi_dp_dup(dp);
}
efi_free_pool(dp);
if (!final_dp)
goto out;
if (utf16_utf8_strlen(bo->optional_data)) {
len = utf16_utf8_strlen(bo->optional_data) + 1;
tmp = calloc(1, len);
if (!tmp)
goto out;
p = tmp;
utf16_utf8_strncpy(&p, bo->optional_data, u16_strlen(bo->optional_data));
}
ret = eficonfig_set_boot_option(varname, final_dp, final_dp_size, bo->description, tmp);
out:
free(tmp);
free(bo->optional_data);
free(bo->description);
free(bo->file_info.current_path);
free(bo->initrd_info.current_path);
efi_free_pool(device_dp);
efi_free_pool(initrd_device_dp);
efi_free_pool(initrd_dp);
efi_free_pool(final_dp);
return ret;
}
/**
* eficonfig_process_add_boot_option() - handler to add boot option
*
* @data: pointer to the data for each entry
* Return: status code
*/
static efi_status_t eficonfig_process_add_boot_option(void *data)
{
u16 varname[9];
efi_status_t ret;
struct eficonfig_boot_option *bo = NULL;
bo = calloc(1, sizeof(struct eficonfig_boot_option));
if (!bo)
return EFI_OUT_OF_RESOURCES;
ret = eficonfig_get_unused_bootoption(varname, sizeof(varname), &bo->boot_index);
if (ret != EFI_SUCCESS)
return ret;
ret = eficonfig_edit_boot_option(varname, bo, NULL, 0, " ** Add Boot Option ** ");
if (ret != EFI_SUCCESS)
goto out;
ret = eficonfig_append_bootorder((u16)bo->boot_index);
if (ret != EFI_SUCCESS)
goto out;
out:
free(bo);
/* to stay the parent menu */
ret = (ret == EFI_ABORTED) ? EFI_SUCCESS : ret;
return ret;
}
/**
* eficonfig_process_boot_selected() - handler to select boot option entry
*
* @data: pointer to the data for each entry
* Return: status code
*/
static efi_status_t eficonfig_process_boot_selected(void *data)
{
struct eficonfig_boot_selection_data *info = data;
if (info)
*info->selected = info->boot_index;
return EFI_SUCCESS;
}
/**
* search_bootorder() - search the boot option index in BootOrder
*
* @bootorder: pointer to the BootOrder variable
* @num: number of BootOrder entry
* @target: target boot option index to search
* @index: pointer to store the index of BootOrder variable
* Return: true if exists, false otherwise
*/
static bool search_bootorder(u16 *bootorder, efi_uintn_t num, u32 target, u32 *index)
{
u32 i;
for (i = 0; i < num; i++) {
if (target == bootorder[i]) {
if (index)
*index = i;
return true;
}
}
return false;
}
/**
* eficonfig_add_boot_selection_entry() - add boot option menu entry
*
* @efi_menu: pointer to store the efimenu structure
* @boot_index: boot option index to be added
* @selected: pointer to store the selected boot option index
* Return: status code
*/
static efi_status_t eficonfig_add_boot_selection_entry(struct efimenu *efi_menu,
unsigned int boot_index,
unsigned int *selected)
{
char *buf, *p;
efi_status_t ret;
efi_uintn_t size;
void *load_option;
struct efi_load_option lo;
u16 varname[] = u"Boot####";
struct eficonfig_boot_selection_data *info;
efi_create_indexed_name(varname, sizeof(varname), "Boot", boot_index);
load_option = efi_get_var(varname, &efi_global_variable_guid, &size);
if (!load_option)
return EFI_SUCCESS;
ret = efi_deserialize_load_option(&lo, load_option, &size);
if (ret != EFI_SUCCESS) {
log_warning("Invalid load option for %ls\n", varname);
free(load_option);
return ret;
}
if (size >= sizeof(efi_guid_t) &&
!guidcmp(lo.optional_data, &efi_guid_bootmenu_auto_generated)) {
/*
* auto generated entry has GUID in optional_data,
* skip auto generated entry because it will be generated
* again even if it is edited or deleted.
*/
free(load_option);
return EFI_SUCCESS;
}
info = calloc(1, sizeof(struct eficonfig_boot_selection_data));
if (!info) {
free(load_option);
return EFI_OUT_OF_RESOURCES;
}
buf = calloc(1, utf16_utf8_strlen(lo.label) + 1);
if (!buf) {
free(load_option);
free(info);
return EFI_OUT_OF_RESOURCES;
}
p = buf;
utf16_utf8_strcpy(&p, lo.label);
info->boot_index = boot_index;
info->selected = selected;
ret = eficonfig_append_menu_entry(efi_menu, buf, eficonfig_process_boot_selected, info);
if (ret != EFI_SUCCESS) {
free(load_option);
free(info);
return ret;
}
free(load_option);
return EFI_SUCCESS;
}
/**
* eficonfig_show_boot_selection() - construct boot option menu entry
*
* @selected: pointer to store the selected boot option index
* Return: status code
*/
static efi_status_t eficonfig_show_boot_selection(unsigned int *selected)
{
u32 i;
u16 *bootorder;
efi_status_t ret;
u16 *var_name16 = NULL;
efi_uintn_t num, size, buf_size;
struct efimenu *efi_menu;
struct list_head *pos, *n;
struct eficonfig_entry *entry;
efi_menu = calloc(1, sizeof(struct efimenu));
if (!efi_menu)
return EFI_OUT_OF_RESOURCES;
bootorder = efi_get_var(u"BootOrder", &efi_global_variable_guid, &size);
INIT_LIST_HEAD(&efi_menu->list);
num = size / sizeof(u16);
/* list the load option in the order of BootOrder variable */
for (i = 0; i < num; i++) {
ret = eficonfig_add_boot_selection_entry(efi_menu, bootorder[i], selected);
if (ret != EFI_SUCCESS)
goto out;
if (efi_menu->count >= EFICONFIG_ENTRY_NUM_MAX - 1)
break;
}
/* list the remaining load option not included in the BootOrder */
buf_size = 128;
var_name16 = malloc(buf_size);
if (!var_name16)
return EFI_OUT_OF_RESOURCES;
var_name16[0] = 0;
for (;;) {
int index;
efi_guid_t guid;
ret = efi_next_variable_name(&buf_size, &var_name16, &guid);
if (ret == EFI_NOT_FOUND)
break;
if (ret != EFI_SUCCESS)
goto out;
if (efi_varname_is_load_option(var_name16, &index)) {
/* If the index is included in the BootOrder, skip it */
if (search_bootorder(bootorder, num, index, NULL))
continue;
ret = eficonfig_add_boot_selection_entry(efi_menu, index, selected);
if (ret != EFI_SUCCESS)
goto out;
}
if (efi_menu->count >= EFICONFIG_ENTRY_NUM_MAX - 1)
break;
}
ret = eficonfig_append_quit_entry(efi_menu);
if (ret != EFI_SUCCESS)
goto out;
ret = eficonfig_process_common(efi_menu, " ** Select Boot Option **");
out:
list_for_each_safe(pos, n, &efi_menu->list) {
entry = list_entry(pos, struct eficonfig_entry, list);
free(entry->data);
}
eficonfig_destroy(efi_menu);
free(var_name16);
return ret;
}
/**
* eficonfig_process_edit_boot_option() - handler to edit boot option
*
* @data: pointer to the data for each entry
* Return: status code
*/
static efi_status_t eficonfig_process_edit_boot_option(void *data)
{
efi_status_t ret;
efi_uintn_t size;
struct eficonfig_boot_option *bo = NULL;
while (1) {
unsigned int selected;
void *load_option;
u16 varname[] = u"Boot####";
ret = eficonfig_show_boot_selection(&selected);
if (ret != EFI_SUCCESS)
break;
bo = calloc(1, sizeof(struct eficonfig_boot_option));
if (!bo) {
ret = EFI_OUT_OF_RESOURCES;
goto out;
}
bo->boot_index = selected;
efi_create_indexed_name(varname, sizeof(varname), "Boot", selected);
load_option = efi_get_var(varname, &efi_global_variable_guid, &size);
if (!load_option) {
free(bo);
ret = EFI_NOT_FOUND;
goto out;
}
ret = eficonfig_edit_boot_option(varname, bo, load_option, size,
" ** Edit Boot Option ** ");
free(load_option);
free(bo);
if (ret != EFI_SUCCESS && ret != EFI_ABORTED)
break;
}
out:
/* to stay the parent menu */
ret = (ret == EFI_ABORTED) ? EFI_NOT_READY : ret;
return ret;
}
/**
* eficonfig_display_change_boot_order() - display the BootOrder list
*
* @efi_menu: pointer to the efimenu structure
* Return: status code
*/
static void eficonfig_display_change_boot_order(struct efimenu *efi_menu)
{
bool reverse;
struct list_head *pos, *n;
struct eficonfig_entry *entry;
printf(ANSI_CLEAR_CONSOLE ANSI_CURSOR_POSITION
"\n ** Change Boot Order **\n"
ANSI_CURSOR_POSITION
" Press UP/DOWN to move, +/- to change order"
ANSI_CURSOR_POSITION
" Press SPACE to activate or deactivate the entry"
ANSI_CURSOR_POSITION
" Select [Save] to complete, ESC/CTRL+C to quit"
ANSI_CURSOR_POSITION ANSI_CLEAR_LINE,
1, 1, efi_menu->count + 5, 1, efi_menu->count + 6, 1,
efi_menu->count + 7, 1, efi_menu->count + 8, 1);
/* draw boot option list */
list_for_each_safe(pos, n, &efi_menu->list) {
entry = list_entry(pos, struct eficonfig_entry, list);
reverse = (entry->num == efi_menu->active);
printf(ANSI_CURSOR_POSITION, entry->num + 4, 7);
if (reverse)
puts(ANSI_COLOR_REVERSE);
if (entry->num < efi_menu->count - 2) {
if (((struct eficonfig_boot_order_data *)entry->data)->active)
printf("[*] ");
else
printf("[ ] ");
}
printf("%s", entry->title);
if (reverse)
puts(ANSI_COLOR_RESET);
}
}
/**
* eficonfig_choice_change_boot_order() - handle the BootOrder update
*
* @efi_menu: pointer to the efimenu structure
* Return: status code
*/
static efi_status_t eficonfig_choice_change_boot_order(struct efimenu *efi_menu)
{
int esc = 0;
struct list_head *pos, *n;
enum bootmenu_key key = KEY_NONE;
struct eficonfig_entry *entry, *tmp;
while (1) {
bootmenu_loop(NULL, &key, &esc);
switch (key) {
case KEY_PLUS:
if (efi_menu->active > 0) {
list_for_each_safe(pos, n, &efi_menu->list) {
entry = list_entry(pos, struct eficonfig_entry, list);
if (entry->num == efi_menu->active)
break;
}
tmp = list_entry(pos->prev, struct eficonfig_entry, list);
entry->num--;
tmp->num++;
list_del(&tmp->list);
list_add(&tmp->list, &entry->list);
}
fallthrough;
case KEY_UP:
if (efi_menu->active > 0)
--efi_menu->active;
return EFI_NOT_READY;
case KEY_MINUS:
if (efi_menu->active < efi_menu->count - 3) {
list_for_each_safe(pos, n, &efi_menu->list) {
entry = list_entry(pos, struct eficonfig_entry, list);
if (entry->num == efi_menu->active)
break;
}
tmp = list_entry(pos->next, struct eficonfig_entry, list);
entry->num++;
tmp->num--;
list_del(&entry->list);
list_add(&entry->list, &tmp->list);
++efi_menu->active;
}
return EFI_NOT_READY;
case KEY_DOWN:
if (efi_menu->active < efi_menu->count - 1)
++efi_menu->active;
return EFI_NOT_READY;
case KEY_SELECT:
/* "Save" */
if (efi_menu->active == efi_menu->count - 2)
return EFI_SUCCESS;
/* "Quit" */
if (efi_menu->active == efi_menu->count - 1)
return EFI_ABORTED;
break;
case KEY_SPACE:
if (efi_menu->active < efi_menu->count - 2) {
list_for_each_safe(pos, n, &efi_menu->list) {
entry = list_entry(pos, struct eficonfig_entry, list);
if (entry->num == efi_menu->active) {
struct eficonfig_boot_order_data *data = entry->data;
data->active = !data->active;
return EFI_NOT_READY;
}
}
}
break;
case KEY_QUIT:
return EFI_ABORTED;
default:
/* Pressed key is not valid, no need to regenerate the menu */
break;
}
}
}
/**
* eficonfig_add_change_boot_order_entry() - add boot order entry
*
* @efi_menu: pointer to the efimenu structure
* @boot_index: boot option index to be added
* @active: flag to include the boot option into BootOrder
* Return: status code
*/
static efi_status_t eficonfig_add_change_boot_order_entry(struct efimenu *efi_menu,
u32 boot_index, bool active)
{
char *title, *p;
efi_status_t ret;
efi_uintn_t size;
void *load_option;
struct efi_load_option lo;
u16 varname[] = u"Boot####";
struct eficonfig_boot_order_data *data;
efi_create_indexed_name(varname, sizeof(varname), "Boot", boot_index);
load_option = efi_get_var(varname, &efi_global_variable_guid, &size);
if (!load_option)
return EFI_SUCCESS;
ret = efi_deserialize_load_option(&lo, load_option, &size);
if (ret != EFI_SUCCESS)
goto out;
data = calloc(1, sizeof(*data));
if (!data) {
ret = EFI_OUT_OF_RESOURCES;
goto out;
}
title = calloc(1, utf16_utf8_strlen(lo.label) + 1);
if (!title) {
free(data);
ret = EFI_OUT_OF_RESOURCES;
goto out;
}
p = title;
utf16_utf8_strcpy(&p, lo.label);
data->boot_index = boot_index;
data->active = active;
ret = eficonfig_append_menu_entry(efi_menu, title, NULL, data);
if (ret != EFI_SUCCESS) {
free(data);
free(title);
goto out;
}
out:
free(load_option);
return ret;
}
/**
* eficonfig_create_change_boot_order_entry() - create boot order entry
*
* @efi_menu: pointer to the efimenu structure
* @bootorder: pointer to the BootOrder variable
* @num: number of BootOrder entry
* Return: status code
*/
static efi_status_t eficonfig_create_change_boot_order_entry(struct efimenu *efi_menu,
u16 *bootorder, efi_uintn_t num)
{
u32 i;
char *title;
efi_status_t ret;
u16 *var_name16 = NULL;
efi_uintn_t size, buf_size;
/* list the load option in the order of BootOrder variable */
for (i = 0; i < num; i++) {
if (efi_menu->count >= EFICONFIG_ENTRY_NUM_MAX - 2)
break;
ret = eficonfig_add_change_boot_order_entry(efi_menu, bootorder[i], true);
if (ret != EFI_SUCCESS)
goto out;
}
/* list the remaining load option not included in the BootOrder */
buf_size = 128;
var_name16 = malloc(buf_size);
if (!var_name16)
return EFI_OUT_OF_RESOURCES;
var_name16[0] = 0;
for (;;) {
int index;
efi_guid_t guid;
if (efi_menu->count >= EFICONFIG_ENTRY_NUM_MAX - 2)
break;
size = buf_size;
ret = efi_next_variable_name(&buf_size, &var_name16, &guid);
if (ret == EFI_NOT_FOUND)
break;
if (ret != EFI_SUCCESS)
goto out;
if (efi_varname_is_load_option(var_name16, &index)) {
/* If the index is included in the BootOrder, skip it */
if (search_bootorder(bootorder, num, index, NULL))
continue;
ret = eficonfig_add_change_boot_order_entry(efi_menu, index, false);
if (ret != EFI_SUCCESS)
goto out;
}
}
/* add "Save" and "Quit" entries */
title = strdup("Save");
if (!title) {
ret = EFI_OUT_OF_RESOURCES;
goto out;
}
ret = eficonfig_append_menu_entry(efi_menu, title, NULL, NULL);
if (ret != EFI_SUCCESS)
goto out;
ret = eficonfig_append_quit_entry(efi_menu);
if (ret != EFI_SUCCESS)
goto out;
efi_menu->active = 0;
out:
free(var_name16);
return ret;
}
/**
* eficonfig_process_change_boot_order() - handler to change boot order
*
* @data: pointer to the data for each entry
* Return: status code
*/
static efi_status_t eficonfig_process_change_boot_order(void *data)
{
u32 count;
u16 *bootorder;
efi_status_t ret;
efi_uintn_t num, size;
struct list_head *pos, *n;
struct eficonfig_entry *entry;
struct efimenu *efi_menu;
efi_menu = calloc(1, sizeof(struct efimenu));
if (!efi_menu)
return EFI_OUT_OF_RESOURCES;
bootorder = efi_get_var(u"BootOrder", &efi_global_variable_guid, &size);
INIT_LIST_HEAD(&efi_menu->list);
num = size / sizeof(u16);
ret = eficonfig_create_change_boot_order_entry(efi_menu, bootorder, num);
if (ret != EFI_SUCCESS)
goto out;
while (1) {
eficonfig_display_change_boot_order(efi_menu);
ret = eficonfig_choice_change_boot_order(efi_menu);
if (ret == EFI_SUCCESS) {
u16 *new_bootorder;
new_bootorder = calloc(1, (efi_menu->count - 2) * sizeof(u16));
if (!new_bootorder) {
ret = EFI_OUT_OF_RESOURCES;
goto out;
}
/* create new BootOrder */
count = 0;
list_for_each_safe(pos, n, &efi_menu->list) {
struct eficonfig_boot_order_data *data;
entry = list_entry(pos, struct eficonfig_entry, list);
/* exit the loop when iteration reaches "Save" */
if (!strncmp(entry->title, "Save", strlen("Save")))
break;
data = entry->data;
if (data->active)
new_bootorder[count++] = data->boot_index;
}
size = count * sizeof(u16);
ret = efi_set_variable_int(u"BootOrder", &efi_global_variable_guid,
EFI_VARIABLE_NON_VOLATILE |
EFI_VARIABLE_BOOTSERVICE_ACCESS |
EFI_VARIABLE_RUNTIME_ACCESS,
size, new_bootorder, false);
free(new_bootorder);
goto out;
} else if (ret == EFI_NOT_READY) {
continue;
} else {
goto out;
}
}
out:
free(bootorder);
list_for_each_safe(pos, n, &efi_menu->list) {
entry = list_entry(pos, struct eficonfig_entry, list);
free(entry->data);
}
eficonfig_destroy(efi_menu);
/* to stay the parent menu */
ret = (ret == EFI_ABORTED) ? EFI_NOT_READY : ret;
return ret;
}
/**
* delete_boot_option() - delete selected boot option
*
* @boot_index: boot option index to delete
* Return: status code
*/
static efi_status_t delete_boot_option(u16 boot_index)
{
u16 *bootorder;
u16 varname[9];
efi_status_t ret;
unsigned int index;
efi_uintn_t num, size;
efi_create_indexed_name(varname, sizeof(varname),
"Boot", boot_index);
ret = efi_set_variable_int(varname, &efi_global_variable_guid,
0, 0, NULL, false);
if (ret != EFI_SUCCESS) {
log_err("delete boot option(%ls) failed\n", varname);
return ret;
}
/* update BootOrder if necessary */
bootorder = efi_get_var(u"BootOrder", &efi_global_variable_guid, &size);
if (!bootorder)
return EFI_SUCCESS;
num = size / sizeof(u16);
if (!search_bootorder(bootorder, num, boot_index, &index))
return EFI_SUCCESS;
memmove(&bootorder[index], &bootorder[index + 1],
(num - index - 1) * sizeof(u16));
size -= sizeof(u16);
ret = efi_set_variable_int(u"BootOrder", &efi_global_variable_guid,
EFI_VARIABLE_NON_VOLATILE |
EFI_VARIABLE_BOOTSERVICE_ACCESS |
EFI_VARIABLE_RUNTIME_ACCESS,
size, bootorder, false);
return ret;
}
/**
* eficonfig_process_delete_boot_option() - handler to delete boot option
*
* @data: pointer to the data for each entry
* Return: status code
*/
static efi_status_t eficonfig_process_delete_boot_option(void *data)
{
efi_status_t ret;
unsigned int selected;
while (1) {
ret = eficonfig_show_boot_selection(&selected);
if (ret == EFI_SUCCESS)
ret = delete_boot_option(selected);
if (ret != EFI_SUCCESS)
break;
}
/* to stay the parent menu */
ret = (ret == EFI_ABORTED) ? EFI_NOT_READY : ret;
return ret;
}
/**
* eficonfig_enumerate_boot_option() - enumerate the possible bootable media
*
* @opt: pointer to the media boot option structure
* @volume_handles: pointer to the efi handles
* @count: number of efi handle
* Return: status code
*/
efi_status_t eficonfig_enumerate_boot_option(struct eficonfig_media_boot_option *opt,
efi_handle_t *volume_handles, efi_status_t count)
{
u32 i;
struct efi_handler *handler;
efi_status_t ret = EFI_SUCCESS;
for (i = 0; i < count; i++) {
u16 *p;
u16 dev_name[BOOTMENU_DEVICE_NAME_MAX];
char *optional_data;
struct efi_load_option lo;
char buf[BOOTMENU_DEVICE_NAME_MAX];
struct efi_device_path *device_path;
ret = efi_search_protocol(volume_handles[i], &efi_guid_device_path, &handler);
if (ret != EFI_SUCCESS)
continue;
ret = efi_protocol_open(handler, (void **)&device_path,
efi_root, NULL, EFI_OPEN_PROTOCOL_GET_PROTOCOL);
if (ret != EFI_SUCCESS)
continue;
ret = efi_disk_get_device_name(volume_handles[i], buf, BOOTMENU_DEVICE_NAME_MAX);
if (ret != EFI_SUCCESS)
continue;
p = dev_name;
utf8_utf16_strncpy(&p, buf, strlen(buf));
lo.label = dev_name;
lo.attributes = LOAD_OPTION_ACTIVE;
lo.file_path = device_path;
lo.file_path_length = efi_dp_size(device_path) + sizeof(END);
/*
* Set the dedicated guid to optional_data, it is used to identify
* the boot option that automatically generated by the bootmenu.
* efi_serialize_load_option() expects optional_data is null-terminated
* utf8 string, so set the "1234567" string to allocate enough space
* to store guid, instead of realloc the load_option.
*/
lo.optional_data = "1234567";
opt[i].size = efi_serialize_load_option(&lo, (u8 **)&opt[i].lo);
if (!opt[i].size) {
ret = EFI_OUT_OF_RESOURCES;
goto out;
}
/* set the guid */
optional_data = (char *)opt[i].lo + (opt[i].size - u16_strsize(u"1234567"));
memcpy(optional_data, &efi_guid_bootmenu_auto_generated, sizeof(efi_guid_t));
}
out:
return ret;
}
/**
* eficonfig_delete_invalid_boot_option() - delete non-existing boot option
*
* @opt: pointer to the media boot option structure
* @count: number of media boot option structure
* Return: status code
*/
efi_status_t eficonfig_delete_invalid_boot_option(struct eficonfig_media_boot_option *opt,
efi_status_t count)
{
efi_uintn_t size;
void *load_option;
u32 i, list_size = 0;
struct efi_load_option lo;
u16 *var_name16 = NULL;
u16 varname[] = u"Boot####";
efi_status_t ret = EFI_SUCCESS;
u16 *delete_index_list = NULL, *p;
efi_uintn_t buf_size;
buf_size = 128;
var_name16 = malloc(buf_size);
if (!var_name16)
return EFI_OUT_OF_RESOURCES;
var_name16[0] = 0;
for (;;) {
int index;
efi_guid_t guid;
efi_uintn_t tmp;
ret = efi_next_variable_name(&buf_size, &var_name16, &guid);
if (ret == EFI_NOT_FOUND) {
/*
* EFI_NOT_FOUND indicates we retrieved all EFI variables.
* This should be treated as success.
*/
ret = EFI_SUCCESS;
break;
}
if (ret != EFI_SUCCESS)
goto out;
if (!efi_varname_is_load_option(var_name16, &index))
continue;
efi_create_indexed_name(varname, sizeof(varname), "Boot", index);
load_option = efi_get_var(varname, &efi_global_variable_guid, &size);
if (!load_option)
continue;
tmp = size;
ret = efi_deserialize_load_option(&lo, load_option, &size);
if (ret != EFI_SUCCESS)
goto next;
if (size >= sizeof(efi_guid_bootmenu_auto_generated) &&
!guidcmp(lo.optional_data, &efi_guid_bootmenu_auto_generated)) {
for (i = 0; i < count; i++) {
if (opt[i].size == tmp &&
memcmp(opt[i].lo, load_option, tmp) == 0) {
opt[i].exist = true;
break;
}
}
/*
* The entire list of variables must be retrieved by
* efi_get_next_variable_name_int() before deleting the invalid
* boot option, just save the index here.
*/
if (i == count) {
p = realloc(delete_index_list, sizeof(u32) *
(list_size + 1));
if (!p) {
ret = EFI_OUT_OF_RESOURCES;
goto out;
}
delete_index_list = p;
delete_index_list[list_size++] = index;
}
}
next:
free(load_option);
}
/* delete all invalid boot options */
for (i = 0; i < list_size; i++) {
ret = delete_boot_option(delete_index_list[i]);
if (ret != EFI_SUCCESS)
goto out;
}
out:
free(var_name16);
free(delete_index_list);
return ret;
}
/**
* eficonfig_generate_media_device_boot_option() - generate the media device boot option
*
* This function enumerates all devices supporting EFI_SIMPLE_FILE_SYSTEM_PROTOCOL
* and generate the bootmenu entries.
* This function also provide the BOOT#### variable maintenance for
* the media device entries.
* - Automatically create the BOOT#### variable for the newly detected device,
* this BOOT#### variable is distinguished by the special GUID
* stored in the EFI_LOAD_OPTION.optional_data
* - If the device is not attached to the system, the associated BOOT#### variable
* is automatically deleted.
*
* Return: status code
*/
efi_status_t eficonfig_generate_media_device_boot_option(void)
{
u32 i;
efi_status_t ret;
efi_uintn_t count;
efi_handle_t *volume_handles = NULL;
struct eficonfig_media_boot_option *opt = NULL;
ret = efi_locate_handle_buffer_int(BY_PROTOCOL, &efi_simple_file_system_protocol_guid,
NULL, &count, (efi_handle_t **)&volume_handles);
if (ret != EFI_SUCCESS)
return ret;
opt = calloc(count, sizeof(struct eficonfig_media_boot_option));
if (!opt)
goto out;
/* enumerate all devices supporting EFI_SIMPLE_FILE_SYSTEM_PROTOCOL */
ret = eficonfig_enumerate_boot_option(opt, volume_handles, count);
if (ret != EFI_SUCCESS)
goto out;
/*
* System hardware configuration may vary depending on the user setup.
* The boot option is automatically added by the bootmenu.
* If the device is not attached to the system, the boot option needs
* to be deleted.
*/
ret = eficonfig_delete_invalid_boot_option(opt, count);
if (ret != EFI_SUCCESS)
goto out;
/* add non-existent boot option */
for (i = 0; i < count; i++) {
u32 boot_index;
u16 var_name[9];
if (!opt[i].exist) {
ret = eficonfig_get_unused_bootoption(var_name, sizeof(var_name),
&boot_index);
if (ret != EFI_SUCCESS)
goto out;
ret = efi_set_variable_int(var_name, &efi_global_variable_guid,
EFI_VARIABLE_NON_VOLATILE |
EFI_VARIABLE_BOOTSERVICE_ACCESS |
EFI_VARIABLE_RUNTIME_ACCESS,
opt[i].size, opt[i].lo, false);
if (ret != EFI_SUCCESS)
goto out;
ret = eficonfig_append_bootorder(boot_index);
if (ret != EFI_SUCCESS) {
efi_set_variable_int(var_name, &efi_global_variable_guid,
0, 0, NULL, false);
goto out;
}
}
}
out:
if (opt) {
for (i = 0; i < count; i++)
free(opt[i].lo);
}
free(opt);
efi_free_pool(volume_handles);
return ret;
}
/**
* eficonfig_init() - do required initialization for eficonfig command
*
* Return: status code
*/
static efi_status_t eficonfig_init(void)
{
efi_status_t ret = EFI_SUCCESS;
static bool init;
struct efi_handler *handler;
if (!init) {
ret = efi_search_protocol(efi_root, &efi_guid_text_input_protocol, &handler);
if (ret != EFI_SUCCESS)
return ret;
ret = efi_protocol_open(handler, (void **)&cin, efi_root, NULL,
EFI_OPEN_PROTOCOL_GET_PROTOCOL);
if (ret != EFI_SUCCESS)
return ret;
}
init = true;
return ret;
}
static const struct eficonfig_item maintenance_menu_items[] = {
{"Add Boot Option", eficonfig_process_add_boot_option},
{"Edit Boot Option", eficonfig_process_edit_boot_option},
{"Change Boot Order", eficonfig_process_change_boot_order},
{"Delete Boot Option", eficonfig_process_delete_boot_option},
#if (CONFIG_IS_ENABLED(EFI_SECURE_BOOT) && CONFIG_IS_ENABLED(EFI_MM_COMM_TEE))
{"Secure Boot Configuration", eficonfig_process_secure_boot_config},
#endif
{"Quit", eficonfig_process_quit},
};
/**
* do_eficonfig() - execute `eficonfig` command
*
* @cmdtp: table entry describing command
* @flag: bitmap indicating how the command was invoked
* @argc: number of arguments
* @argv: command line arguments
* Return: status code
*/
static int do_eficonfig(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
{
efi_status_t ret;
struct efimenu *efi_menu;
if (argc > 1)
return CMD_RET_USAGE;
ret = efi_init_obj_list();
if (ret != EFI_SUCCESS) {
log_err("Error: Cannot initialize UEFI sub-system, r = %lu\n",
ret & ~EFI_ERROR_MASK);
return CMD_RET_FAILURE;
}
ret = eficonfig_init();
if (ret != EFI_SUCCESS)
return CMD_RET_FAILURE;
ret = eficonfig_generate_media_device_boot_option();
if (ret != EFI_SUCCESS && ret != EFI_NOT_FOUND)
return ret;
while (1) {
efi_menu = eficonfig_create_fixed_menu(maintenance_menu_items,
ARRAY_SIZE(maintenance_menu_items));
if (!efi_menu)
return CMD_RET_FAILURE;
ret = eficonfig_process_common(efi_menu, " ** UEFI Maintenance Menu **");
eficonfig_destroy(efi_menu);
if (ret == EFI_ABORTED)
break;
}
return CMD_RET_SUCCESS;
}
U_BOOT_CMD(
eficonfig, 1, 0, do_eficonfig,
"provide menu-driven UEFI variable maintenance interface",
""
);