This patch enables the menu-driven boot device selection.
User can select the Boot#### included in BootOrder variable.

If user quits thie menu, or the selected Boot#### fails to boot,
efi bootmgr continues to boot in accordance with BootOrder variable.

This commit also moves the user input handling from cmd/bootmenu.c
to common/menu.c to reuse it from efi boot menu.

Signed-off-by: Masahisa Kojima <masahisa.koj...@linaro.org>
---
 cmd/bootmenu.c               | 145 ------------
 common/menu.c                | 137 ++++++++++++
 include/menu.h               |  20 ++
 lib/efi_loader/Kconfig       |  20 ++
 lib/efi_loader/efi_bootmgr.c | 418 ++++++++++++++++++++++++++++++++++-
 5 files changed, 592 insertions(+), 148 deletions(-)

diff --git a/cmd/bootmenu.c b/cmd/bootmenu.c
index 409ef9a848..f9fdebc450 100644
--- a/cmd/bootmenu.c
+++ b/cmd/bootmenu.c
@@ -33,21 +33,6 @@ struct bootmenu_entry {
        struct bootmenu_entry *next;    /* next menu entry (num+1) */
 };
 
-struct bootmenu_data {
-       int delay;                      /* delay for autoboot */
-       int active;                     /* active menu entry */
-       int count;                      /* total count of menu entries */
-       struct bootmenu_entry *first;   /* first menu entry */
-};
-
-enum bootmenu_key {
-       KEY_NONE = 0,
-       KEY_UP,
-       KEY_DOWN,
-       KEY_SELECT,
-       KEY_QUIT,
-};
-
 static char *bootmenu_getoption(unsigned short int n)
 {
        char name[MAX_ENV_SIZE];
@@ -81,136 +66,6 @@ static void bootmenu_print_entry(void *data)
                puts(ANSI_COLOR_RESET);
 }
 
-static void bootmenu_autoboot_loop(struct bootmenu_data *menu,
-                               enum bootmenu_key *key, int *esc)
-{
-       int i, c;
-
-       if (menu->delay > 0) {
-               printf(ANSI_CURSOR_POSITION, menu->count + 5, 1);
-               printf("  Hit any key to stop autoboot: %2d ", menu->delay);
-       }
-
-       while (menu->delay > 0) {
-               for (i = 0; i < 100; ++i) {
-                       if (!tstc()) {
-                               WATCHDOG_RESET();
-                               mdelay(10);
-                               continue;
-                       }
-
-                       menu->delay = -1;
-                       c = getchar();
-
-                       switch (c) {
-                       case '\e':
-                               *esc = 1;
-                               *key = KEY_NONE;
-                               break;
-                       case '\r':
-                               *key = KEY_SELECT;
-                               break;
-                       case 0x3: /* ^C */
-                               *key = KEY_QUIT;
-                               break;
-                       default:
-                               *key = KEY_NONE;
-                               break;
-                       }
-
-                       break;
-               }
-
-               if (menu->delay < 0)
-                       break;
-
-               --menu->delay;
-               printf("\b\b\b%2d ", menu->delay);
-       }
-
-       printf(ANSI_CURSOR_POSITION, menu->count + 5, 1);
-       puts(ANSI_CLEAR_LINE);
-
-       if (menu->delay == 0)
-               *key = KEY_SELECT;
-}
-
-static void bootmenu_loop(struct bootmenu_data *menu,
-               enum bootmenu_key *key, int *esc)
-{
-       int c;
-
-       if (*esc == 1) {
-               if (tstc()) {
-                       c = getchar();
-               } else {
-                       WATCHDOG_RESET();
-                       mdelay(10);
-                       if (tstc())
-                               c = getchar();
-                       else
-                               c = '\e';
-               }
-       } else {
-               while (!tstc()) {
-                       WATCHDOG_RESET();
-                       mdelay(10);
-               }
-               c = getchar();
-       }
-
-       switch (*esc) {
-       case 0:
-               /* First char of ANSI escape sequence '\e' */
-               if (c == '\e') {
-                       *esc = 1;
-                       *key = KEY_NONE;
-               }
-               break;
-       case 1:
-               /* Second char of ANSI '[' */
-               if (c == '[') {
-                       *esc = 2;
-                       *key = KEY_NONE;
-               } else {
-               /* Alone ESC key was pressed */
-                       *key = KEY_QUIT;
-                       *esc = (c == '\e') ? 1 : 0;
-               }
-               break;
-       case 2:
-       case 3:
-               /* Third char of ANSI (number '1') - optional */
-               if (*esc == 2 && c == '1') {
-                       *esc = 3;
-                       *key = KEY_NONE;
-                       break;
-               }
-
-               *esc = 0;
-
-               /* ANSI 'A' - key up was pressed */
-               if (c == 'A')
-                       *key = KEY_UP;
-               /* ANSI 'B' - key down was pressed */
-               else if (c == 'B')
-                       *key = KEY_DOWN;
-               /* other key was pressed */
-               else
-                       *key = KEY_NONE;
-
-               break;
-       }
-
-       /* enter key was pressed */
-       if (c == '\r')
-               *key = KEY_SELECT;
-
-       /* ^C was pressed */
-       if (c == 0x3)
-               *key = KEY_QUIT;
-}
-
 static char *bootmenu_choice_entry(void *data)
 {
        struct bootmenu_data *menu = data;
diff --git a/common/menu.c b/common/menu.c
index 5fb2ffbd06..786e45f217 100644
--- a/common/menu.c
+++ b/common/menu.c
@@ -4,11 +4,14 @@
  * Copyright (c) 2019, NVIDIA CORPORATION. All rights reserved.
  */
 
+#include <ansi.h>
 #include <common.h>
 #include <cli.h>
 #include <malloc.h>
 #include <errno.h>
+#include <linux/delay.h>
 #include <linux/list.h>
+#include <watchdog.h>
 
 #include "menu.h"
 
@@ -418,3 +421,137 @@ int menu_destroy(struct menu *m)
 
        return 1;
 }
+
+void bootmenu_autoboot_loop(struct bootmenu_data *menu,
+                           enum bootmenu_key *key, int *esc)
+{
+       int i, c;
+
+       if (menu->delay > 0) {
+               /* flush input */
+               while (tstc())
+                       getchar();
+
+               printf(ANSI_CURSOR_POSITION, menu->count + 5, 1);
+               printf("  Hit any key to stop autoboot: %2d ", menu->delay);
+       }
+
+       while (menu->delay > 0) {
+               for (i = 0; i < 100; ++i) {
+                       if (!tstc()) {
+                               WATCHDOG_RESET();
+                               mdelay(10);
+                               continue;
+                       }
+
+                       menu->delay = -1;
+                       c = getchar();
+
+                       switch (c) {
+                       case '\e':
+                               *esc = 1;
+                               *key = KEY_NONE;
+                               break;
+                       case '\r':
+                               *key = KEY_SELECT;
+                               break;
+                       case 0x3: /* ^C */
+                               *key = KEY_QUIT;
+                               break;
+                       default:
+                               *key = KEY_NONE;
+                               break;
+                       }
+
+                       break;
+               }
+
+               if (menu->delay < 0)
+                       break;
+
+               --menu->delay;
+               printf("\b\b\b%2d ", menu->delay);
+       }
+
+       printf(ANSI_CURSOR_POSITION, menu->count + 5, 1);
+       puts(ANSI_CLEAR_LINE);
+
+       if (menu->delay == 0)
+               *key = KEY_SELECT;
+}
+
+void bootmenu_loop(struct bootmenu_data *menu,
+                  enum bootmenu_key *key, int *esc)
+{
+       int c;
+
+       if (*esc == 1) {
+               if (tstc()) {
+                       c = getchar();
+               } else {
+                       WATCHDOG_RESET();
+                       mdelay(10);
+                       if (tstc())
+                               c = getchar();
+                       else
+                               c = '\e';
+               }
+       } else {
+               while (!tstc()) {
+                       WATCHDOG_RESET();
+                       mdelay(10);
+               }
+               c = getchar();
+       }
+
+       switch (*esc) {
+       case 0:
+               /* First char of ANSI escape sequence '\e' */
+               if (c == '\e') {
+                       *esc = 1;
+                       *key = KEY_NONE;
+               }
+               break;
+       case 1:
+               /* Second char of ANSI '[' */
+               if (c == '[') {
+                       *esc = 2;
+                       *key = KEY_NONE;
+               } else {
+               /* Alone ESC key was pressed */
+                       *key = KEY_QUIT;
+                       *esc = (c == '\e') ? 1 : 0;
+               }
+               break;
+       case 2:
+       case 3:
+               /* Third char of ANSI (number '1') - optional */
+               if (*esc == 2 && c == '1') {
+                       *esc = 3;
+                       *key = KEY_NONE;
+                       break;
+               }
+
+               *esc = 0;
+
+               /* ANSI 'A' - key up was pressed */
+               if (c == 'A')
+                       *key = KEY_UP;
+               /* ANSI 'B' - key down was pressed */
+               else if (c == 'B')
+                       *key = KEY_DOWN;
+               /* other key was pressed */
+               else
+                       *key = KEY_NONE;
+
+               break;
+       }
+
+       /* enter key was pressed */
+       if (c == '\r')
+               *key = KEY_SELECT;
+
+       /* ^C was pressed */
+       if (c == 0x3)
+               *key = KEY_QUIT;
+}
diff --git a/include/menu.h b/include/menu.h
index ad5859437e..e74616cae8 100644
--- a/include/menu.h
+++ b/include/menu.h
@@ -35,4 +35,24 @@ int menu_default_choice(struct menu *m, void **choice);
  */
 int menu_show(int bootdelay);
 
+struct bootmenu_data {
+       int delay;                      /* delay for autoboot */
+       int active;                     /* active menu entry */
+       int count;                      /* total count of menu entries */
+       struct bootmenu_entry *first;   /* first menu entry */
+};
+
+enum bootmenu_key {
+       KEY_NONE = 0,
+       KEY_UP,
+       KEY_DOWN,
+       KEY_SELECT,
+       KEY_QUIT,
+};
+
+void bootmenu_autoboot_loop(struct bootmenu_data *menu,
+                           enum bootmenu_key *key, int *esc);
+void bootmenu_loop(struct bootmenu_data *menu,
+                  enum bootmenu_key *key, int *esc);
+
 #endif /* __MENU_H__ */
diff --git a/lib/efi_loader/Kconfig b/lib/efi_loader/Kconfig
index e5e35fe51f..a3fb8b2a75 100644
--- a/lib/efi_loader/Kconfig
+++ b/lib/efi_loader/Kconfig
@@ -39,6 +39,26 @@ config CMD_BOOTEFI_BOOTMGR
          via UEFI variables Boot####, BootOrder, and BootNext. This enables the
          'bootefi bootmgr' command.
 
+config EFI_BOOT_MENU
+       bool "UEFI Boot Menu driven boot device selection"
+       default n
+       help
+         Select this option if you want to enable the menu driven boot device
+         selection. This menu provides the functionality to select a boot
+         option to start, and allow users to edit Boot#### and BootOrder.
+         If this menu is enabled, CLI can be disabled if the system boots
+         via UEFI variable Boot#### and BootOrder.
+
+config EFI_BOOT_MENU_DELAY
+       int "delay in seconds before automatically booting in UEFI Boot Menu"
+       default 10
+       range -1 2147483647
+       help
+         Delay before automatically booting in accordance with
+         "BootOrder" variable.
+         set to 0 to autoboot with no delay.
+         set to -1 to disable autoboot.
+
 config EFI_SETUP_EARLY
        bool
 
diff --git a/lib/efi_loader/efi_bootmgr.c b/lib/efi_loader/efi_bootmgr.c
index 8c04ecbdc8..bbb3fac5bd 100644
--- a/lib/efi_loader/efi_bootmgr.c
+++ b/lib/efi_loader/efi_bootmgr.c
@@ -7,10 +7,12 @@
 
 #define LOG_CATEGORY LOGC_EFI
 
+#include <ansi.h>
 #include <common.h>
 #include <charset.h>
 #include <log.h>
 #include <malloc.h>
+#include <menu.h>
 #include <efi_loader.h>
 #include <efi_variable.h>
 #include <asm/unaligned.h>
@@ -22,14 +24,400 @@ static const struct efi_runtime_services *rs;
  * bootmgr implements the logic of trying to find a payload to boot
  * based on the BootOrder + BootXXXX variables, and then loading it.
  *
- * TODO detecting a special key held (f9?) and displaying a boot menu
- * like you would get on a PC would be clever.
- *
  * TODO if we had a way to write and persist variables after the OS
  * has started, we'd also want to check OsIndications to see if we
  * should do normal or recovery boot.
  */
 
+#define EFI_BOOTMGR_MENU_ENTRY_NUM_MAX 1024
+
+typedef efi_status_t (*efi_bootmenu_entry_func)(void *data, bool *exit);
+
+/**
+ * struct efi_bootmgr_menu_entry - menu entry structure
+ *
+ * @menu_index:                menu entry index
+ * @title:             title of entry
+ * @key:               unique key
+ * @bootmgr_menu:      pointer to the menu structure
+ * @next:              pointer to the next entry
+ * @func:              callback function to be called when this entry is 
selected
+ * @data:              data to be passed to the callback function
+ */
+struct efi_bootmgr_menu_entry {
+       u32 menu_index;
+       u16 *title;
+       char key[6];
+       struct efi_bootmgr_menu *bootmgr_menu;
+       struct efi_bootmgr_menu_entry *next;
+       efi_bootmenu_entry_func func;
+       void *data;
+};
+
+/**
+ * struct efi_bootmgr_menuy - bootmgr menu structure
+ *
+ * @delay:     delay for autoboot
+ * @active:    active menu entry index
+ * @count:     total count of menu entry
+ * @first:     pointer to the first menu entry
+ */
+struct efi_bootmgr_menu {
+       int delay;
+       int active;
+       int count;
+       struct efi_bootmgr_menu_entry *first;
+};
+
+struct efi_bootmgr_menu_item {
+       u16 *title;
+       efi_bootmenu_entry_func func;
+       void *data;
+};
+
+struct efi_bootmgr_boot_selection_data {
+       u16 bootorder_index;
+       void *load_option;
+       int *selected;
+};
+
+static efi_status_t efi_bootmgr_process_boot_selected(void *data, bool *exit);
+static efi_status_t efi_bootmgr_process_boot_selection(void *data, bool *exit);
+
+static struct efi_bootmgr_menu_item bootmgr_menu_items[] = {
+       {u"Boot Manager", efi_bootmgr_process_boot_selection},
+       {u"Quit", NULL},
+};
+
+static void efi_bootmgr_menu_print_entry(void *data)
+{
+       struct efi_bootmgr_menu_entry *entry = data;
+       int reverse = (entry->bootmgr_menu->active == entry->menu_index);
+
+       /* TODO: support scroll or page for many entries */
+
+       /*
+        * Move cursor to line where the entry will be drown (entry->count)
+        * First 3 lines contain bootmgr menu header + one empty line
+        * For the last "Quit" entry, add one empty line
+        */
+       if (entry->menu_index == (entry->bootmgr_menu->count - 1))
+               printf(ANSI_CURSOR_POSITION, entry->menu_index + 5, 1);
+       else
+               printf(ANSI_CURSOR_POSITION, entry->menu_index + 4, 1);
+
+       puts("     ");
+
+       if (reverse)
+               puts(ANSI_COLOR_REVERSE);
+
+       printf("%ls", entry->title);
+
+       if (reverse)
+               puts(ANSI_COLOR_RESET);
+}
+
+static void efi_bootmgr_menu_display_statusline(struct menu *m)
+{
+       struct efi_bootmgr_menu_entry *entry;
+       struct efi_bootmgr_menu *bootmgr_menu;
+
+       if (menu_default_choice(m, (void *)&entry) < 0)
+               return;
+
+       bootmgr_menu = entry->bootmgr_menu;
+
+       printf(ANSI_CURSOR_POSITION, 1, 1);
+       puts(ANSI_CLEAR_LINE);
+       printf(ANSI_CURSOR_POSITION, 2, 1);
+       puts("  *** U-Boot EFI Boot Manager ***");
+       puts(ANSI_CLEAR_LINE_TO_END);
+       printf(ANSI_CURSOR_POSITION, 3, 1);
+       puts(ANSI_CLEAR_LINE);
+
+       /* First 3 lines are bootmgr_menu header + 2 empty lines between 
entries */
+       printf(ANSI_CURSOR_POSITION, bootmgr_menu->count + 5, 1);
+       puts(ANSI_CLEAR_LINE);
+       printf(ANSI_CURSOR_POSITION, bootmgr_menu->count + 6, 1);
+       puts("  Press UP/DOWN to move, ENTER to select, ESC/CTRL+C to quit");
+       puts(ANSI_CLEAR_LINE_TO_END);
+       printf(ANSI_CURSOR_POSITION, bootmgr_menu->count + 7, 1);
+       puts(ANSI_CLEAR_LINE);
+}
+
+static char *efi_bootmgr_menu_choice_entry(void *data)
+{
+       int i;
+       int esc = 0;
+       struct efi_bootmgr_menu_entry *iter;
+       enum bootmenu_key key = KEY_NONE;
+       struct efi_bootmgr_menu *bootmgr_menu = data;
+
+       while (1) {
+               if (bootmgr_menu->delay >= 0) {
+                       /* Autoboot was not stopped */
+                       bootmenu_autoboot_loop((struct bootmenu_data 
*)bootmgr_menu, &key, &esc);
+               } else {
+                       /* Some key was pressed, so autoboot was stopped */
+                       bootmenu_loop((struct bootmenu_data *)bootmgr_menu, 
&key, &esc);
+               }
+
+               if (bootmgr_menu->delay == 0)
+                       key = KEY_QUIT;
+
+               switch (key) {
+               case KEY_UP:
+                       if (bootmgr_menu->active > 0)
+                               --bootmgr_menu->active;
+                       /* no menu key selected, regenerate menu */
+                       return NULL;
+               case KEY_DOWN:
+                       if (bootmgr_menu->active < bootmgr_menu->count - 1)
+                               ++bootmgr_menu->active;
+                       /* no menu key selected, regenerate menu */
+                       return NULL;
+               case KEY_SELECT:
+                       iter = bootmgr_menu->first;
+                       for (i = 0; i < bootmgr_menu->active; ++i)
+                               iter = iter->next;
+                       return iter->key;
+               case KEY_QUIT:
+                       /* Quit by choosing the last entry */
+                       iter = bootmgr_menu->first;
+                       while (iter->next)
+                               iter = iter->next;
+                       return iter->key;
+               default:
+                       break;
+               }
+       }
+
+       /* never happens */
+       debug("bootmgr menu: this should not happen");
+       return NULL;
+}
+
+static void efi_bootmgr_menu_destroy(struct efi_bootmgr_menu *bootmgr_menu)
+{
+       struct efi_bootmgr_menu_entry *next;
+       struct efi_bootmgr_menu_entry *iter = bootmgr_menu->first;
+
+       while (iter) {
+               next = iter->next;
+               free(iter);
+               iter = next;
+       }
+       free(bootmgr_menu);
+}
+
+/**
+ * efi_bootmgr_process_common() - main handler for uefi bootmgr menu
+ *
+ * Construct the structures required to show the menu, then handle
+ * the user input intracting with u-boot menu functions.
+ *
+ * @items:     pointer to the structure of each menu entry
+ * @count:     the number of menu entry
+ * @delay:     delay for autoboot/autoselect
+ * Return:     status code
+ */
+static efi_status_t efi_bootmgr_process_common(struct efi_bootmgr_menu_item 
*items,
+                                              int count, int delay)
+{
+       u32 i;
+       bool exit = false;
+       efi_status_t ret;
+       struct menu *menu;
+       void *choice = NULL;
+       struct efi_bootmgr_menu_entry *entry;
+       struct efi_bootmgr_menu *bootmgr_menu;
+       struct efi_bootmgr_menu_entry *iter = NULL;
+
+       if (count > EFI_BOOTMGR_MENU_ENTRY_NUM_MAX)
+               return EFI_OUT_OF_RESOURCES;
+
+       bootmgr_menu = calloc(1, sizeof(struct efi_bootmgr_menu));
+       if (!bootmgr_menu)
+               return EFI_OUT_OF_RESOURCES;
+
+       bootmgr_menu->delay = delay;
+       bootmgr_menu->active = 0;
+       bootmgr_menu->first = NULL;
+
+       for (i = 0; i < count; i++) {
+               entry = calloc(1, sizeof(struct efi_bootmgr_menu_entry));
+               if (!entry) {
+                       ret = EFI_LOAD_ERROR;
+                       goto out;
+               }
+
+               entry->menu_index = i;
+               entry->title = items->title;
+               snprintf(entry->key, sizeof(entry->key), "%04X", i);
+               entry->bootmgr_menu = bootmgr_menu;
+               entry->func = items->func;
+               entry->data = items->data;
+               entry->next = NULL;
+
+               if (!iter)
+                       bootmgr_menu->first = entry;
+               else
+                       iter->next = entry;
+
+               iter = entry;
+               items++;
+       }
+       bootmgr_menu->count = count;
+
+       menu = menu_create(NULL, 0, 1, efi_bootmgr_menu_display_statusline,
+                          efi_bootmgr_menu_print_entry, 
efi_bootmgr_menu_choice_entry,
+                          bootmgr_menu);
+       if (!menu) {
+               ret = EFI_INVALID_PARAMETER;
+               goto out;
+       }
+
+       for (entry = bootmgr_menu->first; entry; entry = entry->next) {
+               if (!menu_item_add(menu, entry->key, entry)) {
+                       ret = EFI_INVALID_PARAMETER;
+                       goto out;
+               }
+       }
+
+       menu_default_set(menu, bootmgr_menu->first->key);
+
+       while (!exit) {
+               puts(ANSI_CURSOR_HIDE);
+               puts(ANSI_CLEAR_CONSOLE);
+               printf(ANSI_CURSOR_POSITION, 1, 1);
+
+               if (menu_get_choice(menu, &choice)) {
+                       entry = choice;
+                       if (entry->func)
+                               ret = entry->func(entry->data, &exit);
+
+                       /* last entry "Quit" is selected, exit this menu */
+                       if (entry->menu_index == (entry->bootmgr_menu->count - 
1)) {
+                               ret = EFI_ABORTED;
+                               break;
+                       }
+               }
+       }
+
+out:
+       menu_destroy(menu);
+       efi_bootmgr_menu_destroy(bootmgr_menu);
+
+       puts(ANSI_CLEAR_CONSOLE);
+       printf(ANSI_CURSOR_POSITION, 1, 1);
+       puts(ANSI_CURSOR_SHOW);
+
+       return ret;
+}
+
+static efi_status_t efi_bootmgr_show_boot_selection(u16 *bootorder, 
efi_uintn_t count,
+                                                   int *selected)
+{
+       u32 i;
+       efi_status_t ret;
+       efi_uintn_t size;
+       void *load_option;
+       struct efi_load_option lo;
+       u16 varname[] = u"Boot####";
+       struct efi_bootmgr_menu_item *menu_item, *iter;
+
+       menu_item = calloc(count + 1, sizeof(struct efi_bootmgr_menu_item));
+       if (!menu_item) {
+               ret = EFI_OUT_OF_RESOURCES;
+               goto out;
+       }
+
+       iter = menu_item;
+       for (i = 0; i < count; i++) {
+               efi_create_indexed_name(varname, sizeof(varname),
+                                       "Boot", bootorder[i]);
+               load_option = efi_get_var(varname, &efi_global_variable_guid, 
&size);
+               if (!load_option)
+                       continue;
+
+               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);
+                       continue;
+               }
+
+               if (lo.attributes & LOAD_OPTION_ACTIVE) {
+                       struct efi_bootmgr_boot_selection_data *info;
+
+                       info = calloc(1, sizeof(struct 
efi_bootmgr_boot_selection_data));
+                       if (!info) {
+                               ret = EFI_OUT_OF_RESOURCES;
+                               goto out;
+                       }
+
+                       info->bootorder_index = i;
+                       info->load_option = load_option;
+                       info->selected = selected;
+                       iter->title = lo.label;
+                       iter->func = efi_bootmgr_process_boot_selected;
+                       iter->data = info;
+                       iter++;
+               }
+       }
+
+       /* add "Quit" entry */
+       iter->title = u"Quit";
+       iter->func = NULL;
+       iter->data = NULL;
+       count += 1;
+
+       ret = efi_bootmgr_process_common(menu_item, count, -1);
+
+out:
+       iter = menu_item;
+       for (i = 0; i < count - 1; i++, iter++) {
+               free(((struct efi_bootmgr_boot_selection_data 
*)iter->data)->load_option);
+               free(iter->data);
+       }
+
+       free(menu_item);
+
+       return ret;
+}
+
+static efi_status_t efi_bootmgr_process_boot_selected(void *data, bool *exit)
+{
+       struct efi_bootmgr_boot_selection_data *info = data;
+
+       *exit = true;
+
+       if (info)
+               *info->selected = info->bootorder_index;
+
+       return EFI_SUCCESS;
+}
+
+static efi_status_t efi_bootmgr_process_boot_selection(void *data, bool *exit)
+{
+       u16 *bootorder;
+       efi_status_t ret;
+       efi_uintn_t num, size;
+
+       bootorder = efi_get_var(u"BootOrder", &efi_global_variable_guid, &size);
+       if (!bootorder)
+               return EFI_NOT_FOUND;
+
+       num = size / sizeof(u16);
+       ret = efi_bootmgr_show_boot_selection(bootorder, num, data);
+       if (ret == EFI_SUCCESS)
+               *exit =  true;
+
+       free(bootorder);
+
+       return ret;
+}
+
 /**
  * try_load_entry() - try to load image for boot option
  *
@@ -177,6 +565,30 @@ efi_status_t efi_bootmgr_load(efi_handle_t *handle, void 
**load_options)
                }
        }
 
+       if (IS_ENABLED(CONFIG_EFI_BOOT_MENU)) {
+               int selected;
+
+               bootmgr_menu_items[0].data = &selected;
+               ret = efi_bootmgr_process_common(bootmgr_menu_items,
+                                                ARRAY_SIZE(bootmgr_menu_items),
+                                                CONFIG_EFI_BOOT_MENU_DELAY);
+               if (ret == EFI_SUCCESS) {
+                       /* bootorder may be updated in the bootmgr menu */
+                       bootorder = efi_get_var(u"BootOrder", 
&efi_global_variable_guid, &size);
+                       if (!bootorder) {
+                               log_info("BootOrder not defined\n");
+                               goto error;
+                       }
+                       ret = try_load_entry(bootorder[selected], handle, 
load_options);
+                       free(bootorder);
+                       if (ret == EFI_SUCCESS)
+                               return ret;
+
+                       log_err("Failed to start the selected 
entry(Boot%04X)\n",
+                               bootorder[selected]);
+               }
+       }
+
        /* BootOrder */
        bootorder = efi_get_var(u"BootOrder", &efi_global_variable_guid, &size);
        if (!bootorder) {
-- 
2.17.1

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