eficonfig: menu-driven addition of UEFI boot option
This commit add the "eficonfig" command.
The "eficonfig" command implements the menu-driven UEFI boot option
maintenance feature. This commit implements the addition of
new boot option. User can select the block device volume having
efi_simple_file_system_protocol and select the file corresponding
to the Boot#### variable. User can also enter the description and
optional_data of the BOOT#### variable in utf8.
This commit adds "include/efi_config.h", it contains the common
definition to be used from other menus such as UEFI Secure Boot
key management.
Signed-off-by: Masahisa Kojima <masahisa.kojima@linaro.org>
diff --git a/cmd/eficonfig.c b/cmd/eficonfig.c
new file mode 100644
index 0000000..2d142c4
--- /dev/null
+++ b/cmd/eficonfig.c
@@ -0,0 +1,1608 @@
+// 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;
+};
+
+/**
+ * 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;
+}
+
+/**
+ * append_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
+ */
+static efi_status_t append_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;
+}
+
+/**
+ * append_quit_entry() - append quit entry
+ *
+ * @efi_menu: pointer to the efimenu structure
+ * Return: status code
+ */
+static efi_status_t append_quit_entry(struct efimenu *efi_menu)
+{
+ char *title;
+ efi_status_t ret;
+
+ title = strdup("Quit");
+ if (!title)
+ return EFI_OUT_OF_RESOURCES;
+
+ ret = append_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 = append_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;
+}
+
+/**
+ * create_selected_device_path() - create device path
+ *
+ * @file_info: pointer to the selected file information
+ * Return:
+ * device path or NULL. Caller must free the returned value
+ */
+static
+struct efi_device_path *create_selected_device_path(struct eficonfig_select_file_info *file_info)
+{
+ 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_strlen(file_info->current_path) + 1) * sizeof(u16));
+ 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, file_info->current_path);
+
+ p = buf;
+ p += fp_size;
+ *((struct efi_device_path *)p) = END;
+
+ dp = efi_dp_append(file_info->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 = append_entry(efi_menu, devname, eficonfig_volume_selected, info);
+ if (ret != EFI_SUCCESS) {
+ free(info);
+ goto out;
+ }
+ }
+
+ ret = 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_file_setpos_int(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_file_read_int(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 = append_entry(efi_menu, tmp_infos[i]->file_name,
+ eficonfig_file_selected, tmp_infos[i]);
+ if (ret != EFI_SUCCESS)
+ goto out;
+ }
+
+out:
+ return ret;
+}
+
+/**
+ * eficonfig_select_file() - 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_select_file(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_file_open_int(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_file_read_int(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 = append_quit_entry(efi_menu);
+ if (ret != EFI_SUCCESS)
+ goto err;
+
+ ret = eficonfig_process_common(efi_menu, " ** Select File **");
+err:
+ efi_file_close_int(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_select_file() - callback function for "Select File" entry
+ *
+ * @data: pointer to the data
+ * Return: status code
+ */
+efi_status_t eficonfig_process_select_file(void *data)
+{
+ 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_display_select_file_option() - display select file option
+ *
+ * @file_info: pointer to the file information structure
+ * Return: status code
+ */
+efi_status_t eficonfig_display_select_file_option(struct eficonfig_select_file_info *file_info)
+{
+ efi_status_t ret;
+ struct efimenu *efi_menu;
+
+ select_file_menu_items[1].data = file_info;
+ 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_select_file_handler() - handle user file selection
+ *
+ * @data: pointer to the data
+ * Return: status code
+ */
+efi_status_t eficonfig_select_file_handler(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;
+
+ ret = eficonfig_display_select_file_option(file_info);
+ if (ret != EFI_SUCCESS)
+ return ret;
+
+ 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_open_volume_int(tmp->current_volume, &root);
+ if (ret != EFI_SUCCESS)
+ goto out;
+
+ ret = eficonfig_select_file(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 append_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, *p;
+ efi_handle_t handle;
+ char devname[BOOTMENU_DEVICE_NAME_MAX] = {0};
+
+ /* 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, BOOTMENU_DEVICE_NAME_MAX);
+ if (ret != EFI_SUCCESS)
+ return ret;
+ }
+
+ /* 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, "/", BOOTMENU_DEVICE_NAME_MAX);
+
+ len = strlen(devname);
+ len += utf16_utf8_strlen(file_info->current_path) + 1;
+ file_name = calloc(1, len * sizeof(u16));
+ if (!file_name)
+ return ret;
+
+ 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_select_file_handler, file_info);
+ 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 || (lo.label && u16_strlen(lo.label) >= EFICONFIG_DESCRIPTION_MAX)) {
+ ret = EFI_INVALID_PARAMETER;
+ goto out;
+ }
+ 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 = create_selected_device_path(&bo->initrd_info);
+ 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 = create_selected_device_path(&bo->file_info);
+ 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);
+ if (ret != EFI_SUCCESS)
+ goto out;
+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_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},
+ {"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;
+
+ 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",
+ ""
+);