[RESEND RFC PATCH v2 1/4] efi_loader: add menu-driven boot device selection
Masahisa Kojima
masahisa.kojima at linaro.org
Fri Feb 25 12:13:56 CET 2022
Hi Heinrich,
On Fri, 25 Feb 2022 at 16:26, Heinrich Schuchardt <xypron.glpk at gmx.de> wrote:
>
> On 2/25/22 02:32, Masahisa Kojima wrote:
> > 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.kojima at linaro.org>
>
> With the series applied and CONFIG_EFI_BOOT_MENU=y I first see a line
> "Hit any key to stop autoboot:" with a count down and then the UEFI menu
> with a countdown. This duplication of countdowns does not make sense.
Thank you for your review.
I agree, this duplication does not make sense.
Anyway, my primary goal is to disable CLI, user can select the
UEFI boot option("Boot####" variable) to boot the system, and user can edit
the UEFI boot option("Boot####" and "BootOrder") through the menu.
I now realize that my patch series probably do not work without CLI,
and hooking the "bootefi bootmgr" command to show the new efi bootmenu
is probably wrong. I will investigate further.
>
> This is the content of the new menu:
>
> *** U-Boot EFI Boot Manager ***
>
> Boot Manager
> Boot Manager maintenance
>
> Quit
>
> When selecting " Boot Manager maintenance" I see a second menu:
>
> *** U-Boot EFI Boot Manager ***
>
> Add Boot Option
> Delete Boot Option
> Change Boot Order
>
> Quit
>
> Press UP/DOWN to move, ENTER to select, ESC/CTRL+C to quit
>
> When I select "Add Boot Option" the system (qemu_arm64_defconfig) simply
> hangs.
Sorry, there is something wrong on my code. I will try to reproduce.
>
> Why do we need the first menu? Compare it to your laptop experience when
> pressing the boot menu key (often <F12> or <F8>).
>
> Can't we have a simple countdown:
Yes, I could skip the first menu.
>
> "Hit any key for boot menu"
>
> If a key is hit show a menu showing the different boot options and the
> distro-boot devices:
>
> Debian (0001)
> Ubuntu (0002)
> SATA(1)
> SATA(2)
> NVMe(1)
> Boot manager settings
> Command line
The current scope of this patch series are disabling CLI and booting
the system with UEFI boot option.
I will check what I can do for distro-boot.
>
> Simon has proposed a patch series "Initial implementation of standard
> boot",
> https://patchwork.ozlabs.org/project/uboot/list/?series=281745&state=*.
> I think the proposed menu would have to iterate through all active boot
> methods.
>
> > ---
> > Changes in v2:
> > - move user input handling from cmd/bootmenu.c to common/menu.c
> > - keyboard buffer is drained before asking question in
> > common/menu.c::bootmenu_autoboot_loop()
> > - Add EFI_BOOT_MENU_DELAY Kconfig option to set delay for
> > autoboot and disable autoboot
> > - remove unnecessary "autoboot" member in struc efi_bootmgr_menu
> >
> > 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.
> > */
> >
>
> common/menu.c is only compiled if CONFIG_MENU=y but CONFIG_EFI_BOOT_MENU
> does not select it. So depending on configuration this simply does not link:
I will fix this.
>
> lib/efi_loader/efi_bootmgr.c:315: undefined reference to `menu_create'
> aarch64-linux-gnu-ld.bfd: lib/efi_loader/efi_bootmgr.c:330: undefined
> reference to `menu_default_set'
> aarch64-linux-gnu-ld.bfd: lib/efi_loader/efi_bootmgr.c:351: undefined
> reference to `menu_destroy'
> aarch64-linux-gnu-ld.bfd: lib/efi_loader/efi_bootmgr.c:324: undefined
> reference to `menu_item_add'
> aarch64-linux-gnu-ld.bfd: lib/efi_loader/efi_bootmgr.c:337: undefined
> reference to `menu_get_choice'
> aarch64-linux-gnu-ld.bfd: lib/efi_loader/efi_bootmgr.o: in function
> `efi_bootmgr_menu_choice_entry':
> lib/efi_loader/efi_bootmgr.c:202: undefined reference to
> `bootmenu_autoboot_loop'
> aarch64-linux-gnu-ld.bfd: lib/efi_loader/efi_bootmgr.c:205: undefined
> reference to `bootmenu_loop'
> aarch64-linux-gnu-ld.bfd: lib/efi_loader/efi_bootmgr.o: in function
> `efi_bootmgr_menu_display_statusline':
> lib/efi_loader/efi_bootmgr.c:168: undefined reference to
> `menu_default_choice
>
> > +#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.
>
> We end up with these symbols for menus:
>
> CONFIG_MENU
> CONFIG_AUTOBOOT_MENUKEY
> CONFIG_AUTOBOOT_MENU_SHOW
> CONFIG_BOOTDELAY
> CONFIG_EFI_BOOT_MENU
> CONFIG_EFI_BOOT_MENU_DELAY
>
> Defining both CONFIG_AUTOBOOT_MENU_SHOW and CONFIG_EFI_BOOT_MENU does
> not make much sense. Same for CONFIG_BOOTDELAY and
> CONFIG_EFI_BOOT_MENU_DELAY. Please, unifiy the settings.
I will consider how I can unify these options.
Thanks,
Masahisa Kojima
>
> Best regards
>
> Heinrich
>
> > +
> > +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) {
>
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