[PATCH v6 1/6] efi_loader: menu-driven addition of UEFI boot option
Masahisa Kojima
masahisa.kojima at linaro.org
Mon Jun 6 02:45:42 CEST 2022
On Thu, 26 May 2022 at 16:38, Heinrich Schuchardt <xypron.glpk at gmx.de> wrote:
>
> On 5/25/22 03:38, Takahiro Akashi wrote:
> > On Mon, May 16, 2022 at 08:00:37PM +0900, Masahisa Kojima wrote:
> >> This commit supports the menu-driven UEFI boot option addition.
> >> User can select the block device volume having
> >> efi_simple_file_system_protocol and select the file corresponding
> >> to the Boot#### variable. Then user enter the label of the BOOT####
> >> variable in utf8.
> >>
> >> Signed-off-by: Masahisa Kojima <masahisa.kojima at linaro.org>
> >> ---
> >> Changes in v6:
> >> - fix typos
> >> - modify volume name to match U-Boot syntax
> >> - compile in CONFIG_EFI_LOADER=n and CONFIG_CMD_BOOTEFI_BOOTMGR=n
> >
> > Is this correct?
> >
> >> - simplify u16_strncmp() usage
> >> - support "a\b.efi" file path, use link list to handle filepath
> >> - modify length check condition
> >> - UEFI related menu items only appears with CONFIG_AUTOBOOT_MENU_SHOW=y
> >
> > Why?
> > I think that the feature is useful even without AUTOBOOT.
> > As you know, efidebug is seen as a debugging tool and is not expected
> > to be enabled in production systems.
> >
> > So the feature you're adding is the only available UI for boot manager.
> > What I recommend is
> > - to create a boot manager maintenance as a standalone U-Boot command,
> > - to add an bootmenu entry for invoking the command
> >
> >> Changes in v5:
> >> - remove forward declarations
> >> - add const qualifier for menu items
> >> - fix the possible unaligned access for directory info access
> >> - split into three commit 1)add boot option 2) delete boot option 3)change boot order
> >> This commit is 1)add boot option.
> >> - fix file name buffer allocation size, it should be EFI_BOOTMENU_FILE_PATH_MAX * sizeof(u16)
> >> - fix wrong size checking for file selection
> >>
> >> Chanes in v4:
> >> - UEFI boot option maintenance menu is integrated into bootmenu
> >> - display the simplified volume name(e.g. usb0:1, nvme1:2) for the
> >> volume selection
> >> - instead of extending lib/efi_loader/efi_bootmgr.c, newly create
> >> lib/efi_loader/efi_bootmenu_maintenance.c and implement boot
> >> variable maintenance into it.
> >>
> >> Changes in RFC v3:
> >> not included in v3 series
> >>
> >> Changes in RFC v2:
> >> - enable utf8 user input for boot option name
> >> - create lib/efi_loader/efi_console.c::efi_console_get_u16_string() for
> >> utf8 user input handling
> >> - use u16_strlcat instead of u16_strcat
> >> - remove the EFI_CALLs, and newly create or expose the following
> >> xxx_int() functions.
> >> efi_locate_handle_buffer_int(), efi_open_volume_int(),
> >> efi_file_open_int(), efi_file_close_int(), efi_file_read_int() and
> >> efi_file_setpos_int().
> >> Note that EFI_CALLs still exist for EFI_DEVICE_PATH_TO_TEXT_PROTOCOL
> >> and EFI_SIMPLE_TEXT_INPUT/OUTPUT_PROTOCOL
> >> - use efi_search_protocol() instead of calling locate_protocol() to get
> >> the device_path_to_text_protocol interface.
> >> - remove unnecessary puts(ANSI_CLEAR_LINE), this patch is still depends on
> >> puts(ANSI_CLEAR_CONSOLE)
> >> - skip SetVariable() if the bootorder is not changed
> >>
> >> cmd/bootmenu.c | 73 +-
> >> include/efi_loader.h | 37 +
> >> lib/efi_loader/Makefile | 3 +
> >> lib/efi_loader/efi_bootmenu_maintenance.c | 906 ++++++++++++++++++++++
> >
> > I would say that this file should be moved under /cmd as the code does not
> > implement any UEFI specification semantics, but simply provides helper
> > functions for bootmenu command.
> >
> > Or I recommend that the boot manager be implemented as a standalone command
> > (as I insisted serveral times before) and the related maintenance feature
> > be invoked as follows:
> > => efibootmanager -i (i for interactive)
> >
> >> lib/efi_loader/efi_boottime.c | 52 +-
> >> lib/efi_loader/efi_console.c | 81 ++
> >> lib/efi_loader/efi_disk.c | 11 +
> >> lib/efi_loader/efi_file.c | 75 +-
> >> 8 files changed, 1184 insertions(+), 54 deletions(-)
> >> create mode 100644 lib/efi_loader/efi_bootmenu_maintenance.c
> >>
> >> diff --git a/cmd/bootmenu.c b/cmd/bootmenu.c
> >> index 8859eebea5..4b846332b0 100644
> >> --- a/cmd/bootmenu.c
> >> +++ b/cmd/bootmenu.c
> >> @@ -19,6 +19,12 @@
> >>
> >> /* maximum bootmenu entries */
> >> #define MAX_COUNT 99
> >> +#if defined(CONFIG_CMD_BOOTEFI_BOOTMGR) && defined(CONFIG_AUTOBOOT_MENU_SHOW)
> >> +#define STATIC_ENTRY 2
> >> +#else
> >> +#define STATIC_ENTRY 1
> >> +#endif
> >> +#define MAX_DYNAMIC_ENTRY (MAX_COUNT - STATIC_ENTRY)
> >>
> >> /* maximal size of bootmenu env
> >> * 9 = strlen("bootmenu_")
> >> @@ -38,10 +44,11 @@ enum boot_type {
> >> BOOTMENU_TYPE_NONE = 0,
> >> BOOTMENU_TYPE_BOOTMENU,
> >> BOOTMENU_TYPE_UEFI_BOOT_OPTION,
> >> + BOOTMENU_TYPE_UEFI_MAINTENANCE,
> >> };
> >>
> >> struct bootmenu_entry {
> >> - unsigned short int num; /* unique number 0 .. MAX_COUNT */
> >> + unsigned short int num; /* unique number 0 .. (MAX_COUNT - 1) */
> >> char key[3]; /* key identifier of number */
> >> u16 *title; /* title of entry */
> >> char *command; /* hush command of entry */
> >> @@ -55,7 +62,7 @@ static char *bootmenu_getoption(unsigned short int n)
> >> {
> >> char name[MAX_ENV_SIZE];
> >>
> >> - if (n > MAX_COUNT)
> >> + if (n > MAX_DYNAMIC_ENTRY)
> >> return NULL;
> >>
> >> sprintf(name, "bootmenu_%d", n);
> >> @@ -217,7 +224,7 @@ static int prepare_bootmenu_entry(struct bootmenu_data *menu,
> >> iter = entry;
> >> ++i;
> >>
> >> - if (i == MAX_COUNT - 1)
> >> + if (i == MAX_DYNAMIC_ENTRY)
> >> break;
> >> }
> >>
> >> @@ -305,7 +312,7 @@ static int prepare_uefi_bootorder_entry(struct bootmenu_data *menu,
> >>
> >> free(load_option);
> >>
> >> - if (i == MAX_COUNT - 1)
> >> + if (i == MAX_DYNAMIC_ENTRY)
> >> break;
> >> }
> >>
> >> @@ -341,14 +348,51 @@ static struct bootmenu_data *bootmenu_create(int delay)
> >> if (ret < 0)
> >> goto cleanup;
> >>
> >> - if (IS_ENABLED(CONFIG_CMD_BOOTEFI_BOOTMGR)) {
> >> - if (i < MAX_COUNT - 1) {
> >> + if (IS_ENABLED(CONFIG_CMD_BOOTEFI_BOOTMGR) && IS_ENABLED(CONFIG_AUTOBOOT_MENU_SHOW)) {
> >> + if (i < MAX_DYNAMIC_ENTRY) {
> >> ret = prepare_uefi_bootorder_entry(menu, &iter, &i);
> >> if (ret < 0 && ret != -ENOENT)
> >> goto cleanup;
> >> }
> >> }
> >>
> >> + if (IS_ENABLED(CONFIG_CMD_BOOTEFI_BOOTMGR) && IS_ENABLED(CONFIG_AUTOBOOT_MENU_SHOW)) {
> >> + /* Add UEFI Boot Manager Maintenance entry */
> >> + if (i <= MAX_DYNAMIC_ENTRY) {
> >> + entry = malloc(sizeof(struct bootmenu_entry));
> >> + if (!entry)
> >> + goto cleanup;
> >> +
> >> + entry->title = u16_strdup(u"UEFI Boot Manager Maintenance");
> >
> > If 'u16' is a matter, why not define the type of 'title' as u8 and you can always use
> > utf16_to_utf8() for the setting the value to this field.
> >
> >> + if (!entry->title) {
> >> + free(entry);
> >> + goto cleanup;
> >> + }
> >> +
> >> + entry->command = strdup("");
> >> + if (!entry->command) {
> >> + free(entry->title);
> >> + free(entry);
> >> + goto cleanup;
> >> + }
> >> +
> >> + sprintf(entry->key, "%d", i);
> >> +
> >> + entry->num = i;
> >> + entry->menu = menu;
> >> + entry->type = BOOTMENU_TYPE_UEFI_MAINTENANCE;
> >> + entry->next = NULL;
> >> +
> >> + if (!iter)
> >> + menu->first = entry;
> >> + else
> >> + iter->next = entry;
> >> +
> >> + iter = entry;
> >> + i++;
> >> + }
> >> + }
> >> +
> >> /* Add U-Boot console entry at the end */
> >> if (i <= MAX_COUNT - 1) {
> >> entry = malloc(sizeof(struct bootmenu_entry));
> >> @@ -520,6 +564,14 @@ static enum bootmenu_ret bootmenu_show(int delay)
> >> title = u16_strdup(iter->title);
> >> command = strdup(iter->command);
> >>
> >> + if (IS_ENABLED(CONFIG_CMD_BOOTEFI_BOOTMGR)) {
> >> + if (iter->type == BOOTMENU_TYPE_UEFI_MAINTENANCE) {
> >> + efi_bootmenu_show_maintenance_menu();
> >> + ret = BOOTMENU_RET_UPDATED;
> >> + goto cleanup;
> >> + }
> >> + }
> >> +
> >> /* last entry is U-Boot console or Quit */
> >> if (iter->num == iter->menu->count - 1) {
> >> ret = BOOTMENU_RET_QUIT;
> >> @@ -610,6 +662,7 @@ int do_bootmenu(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
> >> {
> >> char *delay_str = NULL;
> >> int delay = 10;
> >> + int ret;
> >>
> >> #if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
> >> delay = CONFIG_BOOTDELAY;
> >> @@ -624,7 +677,13 @@ int do_bootmenu(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
> >> if (delay_str)
> >> delay = (int)simple_strtol(delay_str, NULL, 10);
> >>
> >> - bootmenu_show(delay);
> >> + while (1) {
> >> + ret = bootmenu_show(delay);
> >> + delay = -1;
> >> + if (ret != BOOTMENU_RET_UPDATED)
> >> + break;
> >> + }
> >> +
> >> return 0;
> >> }
> >>
> >> diff --git a/include/efi_loader.h b/include/efi_loader.h
> >> index 733ee03cd7..49f326e585 100644
> >> --- a/include/efi_loader.h
> >> +++ b/include/efi_loader.h
> >> @@ -226,6 +226,9 @@ const char *__efi_nesting_dec(void);
> >> #define EFI_CACHELINE_SIZE 128
> >> #endif
> >>
> >> +/* max bootmenu title size for volume selection */
> >> +#define BOOTMENU_DEVICE_NAME_MAX 16
> >> +
> >> /* Key identifying current memory map */
> >> extern efi_uintn_t efi_memory_map_key;
> >>
> >> @@ -314,6 +317,9 @@ extern const efi_guid_t efi_guid_firmware_management_protocol;
> >> extern const efi_guid_t efi_esrt_guid;
> >> /* GUID of the SMBIOS table */
> >> extern const efi_guid_t smbios_guid;
> >> +/*GUID of console */
> >> +extern const efi_guid_t efi_guid_text_input_protocol;
> >> +extern const efi_guid_t efi_guid_text_output_protocol;
> >>
> >> extern char __efi_runtime_start[], __efi_runtime_stop[];
> >> extern char __efi_runtime_rel_start[], __efi_runtime_rel_stop[];
> >> @@ -877,6 +883,8 @@ efi_status_t efi_set_load_options(efi_handle_t handle,
> >> void *load_options);
> >> efi_status_t efi_bootmgr_load(efi_handle_t *handle, void **load_options);
> >>
> >> +efi_status_t efi_bootmenu_show_maintenance_menu(void);
> >> +
> >> /**
> >> * struct efi_image_regions - A list of memory regions
> >> *
> >> @@ -1048,4 +1056,33 @@ efi_status_t efi_esrt_populate(void);
> >> efi_status_t efi_load_capsule_drivers(void);
> >>
> >> efi_status_t platform_get_eventlog(struct udevice *dev, u64 *addr, u32 *sz);
> >> +
> >> +efi_status_t efi_locate_handle_buffer_int(enum efi_locate_search_type search_type,
> >> + const efi_guid_t *protocol, void *search_key,
> >> + efi_uintn_t *no_handles, efi_handle_t **buffer);
> >> +
> >> +efi_status_t efi_open_volume_int(struct efi_simple_file_system_protocol *this,
> >> + struct efi_file_handle **root);
> >> +efi_status_t efi_file_open_int(struct efi_file_handle *this,
> >> + struct efi_file_handle **new_handle,
> >> + u16 *file_name, u64 open_mode,
> >> + u64 attributes);
> >> +efi_status_t efi_file_close_int(struct efi_file_handle *file);
> >> +efi_status_t efi_file_read_int(struct efi_file_handle *this,
> >> + efi_uintn_t *buffer_size, void *buffer);
> >> +efi_status_t efi_file_setpos_int(struct efi_file_handle *file, u64 pos);
> >> +
> >> +typedef efi_status_t (*efi_console_filter_func)(struct efi_input_key *key);
> >> +efi_status_t efi_console_get_u16_string
> >> + (struct efi_simple_text_input_protocol *cin,
> >> + struct efi_simple_text_output_protocol *cout,
> >> + u16 *buf, efi_uintn_t count, efi_console_filter_func filer_func,
> >> + int row, int col);
> >> +
> >> +efi_status_t efi_bootmenu_get_unused_bootoption(u16 *buf,
> >> + efi_uintn_t buf_size, u32 *index);
> >> +efi_status_t efi_bootmenu_append_bootorder(u16 index);
> >> +
> >> +efi_status_t efi_disk_get_device_name(struct efi_block_io *this, char *buf, int size);
> >> +
> >> #endif /* _EFI_LOADER_H */
> >> diff --git a/lib/efi_loader/Makefile b/lib/efi_loader/Makefile
> >> index aaaa25cefe..807e9a4319 100644
> >> --- a/lib/efi_loader/Makefile
> >> +++ b/lib/efi_loader/Makefile
> >> @@ -77,6 +77,9 @@ obj-$(CONFIG_EFI_TCG2_PROTOCOL) += efi_tcg2.o
> >> obj-$(CONFIG_EFI_RISCV_BOOT_PROTOCOL) += efi_riscv.o
> >> obj-$(CONFIG_EFI_LOAD_FILE2_INITRD) += efi_load_initrd.o
> >> obj-$(CONFIG_EFI_SIGNATURE_SUPPORT) += efi_signature.o
> >> +ifeq ($(CONFIG_CMD_BOOTEFI_BOOTMGR),y)
> >> +obj-$(CONFIG_CMD_BOOTMENU) += efi_bootmenu_maintenance.o
> >> +endif
> >>
> >> EFI_VAR_SEED_FILE := $(subst $\",,$(CONFIG_EFI_VAR_SEED_FILE))
> >> $(obj)/efi_var_seed.o: $(srctree)/$(EFI_VAR_SEED_FILE)
> >> diff --git a/lib/efi_loader/efi_bootmenu_maintenance.c b/lib/efi_loader/efi_bootmenu_maintenance.c
> >> new file mode 100644
> >> index 0000000000..e5124a8a21
> >> --- /dev/null
> >> +++ b/lib/efi_loader/efi_bootmenu_maintenance.c
> >> @@ -0,0 +1,906 @@
> >> +// SPDX-License-Identifier: GPL-2.0+
> >> +/*
> >> + * Menu-driven UEFI Boot Variable maintenance
> >> + *
> >> + * Copyright (c) 2022 Masahisa Kojima, Linaro Limited
> >> + */
> >> +
> >> +#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>
> >> +
> >> +static struct efi_simple_text_input_protocol *cin;
> >> +static struct efi_simple_text_output_protocol *cout;
> >> +
> >> +#define EFI_BOOTMENU_ENTRY_NUM_MAX 99
> >> +#define EFI_BOOTMENU_FILE_PATH_MAX 512
> >> +#define EFI_BOOTMENU_FILE_PATH_BUF_SIZE (EFI_BOOTMENU_FILE_PATH_MAX * sizeof(u16))
> >> +#define EFI_BOOTMENU_BOOT_NAME_MAX 32
> >> +#define EFI_BOOT_ORDER_MAX_SIZE_IN_DECIMAL 6
> >> +
> >> +typedef efi_status_t (*efi_bootmenu_entry_func)(void *data, bool *exit);
> >> +
> >> +/**
> >> + * struct efi_bootmenu_entry - menu entry structure
> >> + *
> >> + * @num: 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_bootmenu_entry {
> >> + u32 num;
> >> + u16 *title;
> >> + char key[6];
> >> + struct efi_bootmenu *bootmgr_menu;
> >> + struct efi_bootmenu_entry *next;
> >> + efi_bootmenu_entry_func func;
> >> + void *data;
> >> +};
> >> +
> >> +/**
> >> + * struct efi_bootmenu - 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_bootmenu {
> >> + int delay;
> >> + int active;
> >> + int count;
> >> + struct efi_bootmenu_entry *first;
> >> +};
> >> +
> >> +struct efi_bootmenu_item {
> >> + u16 *title;
> >> + efi_bootmenu_entry_func func;
> >> + void *data;
> >> +};
> >> +
> >> +struct efi_bootmenu_boot_selection_data {
> >> + u16 bootorder_index;
> >> + void *load_option;
> >> + int *selected;
> >> +};
> >> +
> >> +struct efi_bootmenu_filepath_info {
> >> + u16 *name;
> >> + struct list_head list;
> >> +};
> >> +
> >> +struct efi_bootmenu_boot_option {
> >> + struct efi_simple_file_system_protocol *current_volume;
> >> + struct efi_device_path *dp_volume;
> >> + u16 *current_path;
> >> + struct list_head filepath_list;
> >> + u16 *boot_name;
> >> + bool file_selected;
> >> +};
> >> +
> >> +static const struct efi_device_path END = {
> >> + .type = DEVICE_PATH_TYPE_END,
> >> + .sub_type = DEVICE_PATH_SUB_TYPE_END,
> >> + .length = sizeof(END),
> >> +};
> >
> > FYI, 'END' is also defined as a static variable in efi_device_path.c
> >
> >> +
> >> +struct efi_bootmenu_volume_entry_data {
> >> + struct efi_bootmenu_boot_option *bo;
> >> + struct efi_simple_file_system_protocol *v;
> >> + struct efi_device_path *dp;
> >> +};
> >> +
> >> +struct efi_bootmenu_file_entry_data {
> >> + struct efi_bootmenu_boot_option *bo;
> >> + bool is_directory;
> >> + u16 *file_name;
> >> +};
> >> +
> >> +static void efi_bootmenu_print_entry(void *data)
> >> +{
> >> + struct efi_bootmenu_entry *entry = data;
> >> + int reverse = (entry->bootmgr_menu->active == entry->num);
> >> +
> >> + /* TODO: support scroll or page for many entries */
> >> +
> >> + /*
> >> + * Move cursor to line where the entry will be drawn (entry->count)
> >> + * First 3 lines contain bootmgr menu header + one empty line
> >> + * For the last "Quit" entry, add one empty line
> >> + */
> >> + if (entry->num == (entry->bootmgr_menu->count - 1))
> >> + printf(ANSI_CURSOR_POSITION, entry->num + 5, 1);
> >> + else
> >> + printf(ANSI_CURSOR_POSITION, entry->num + 4, 1);
> >> +
> >> + puts(" ");
>
> Code size of U-Boot is critical on many board. Please, minimize the
> number of function calls. You can set the column number in the printf
> statement above.
OK.
>
> >> +
> >> + if (reverse)
> >> + puts(ANSI_COLOR_REVERSE);
> >> +
> >> + printf("%ls", entry->title);
> >> +
> >> + if (reverse)
> >> + puts(ANSI_COLOR_RESET);
>
> The if is not strictly needed. Just add ANSI_COLOR_RESET to the printf
> statement above.
Without this 'if' statement, ANSI_COLOR_RESET is sent every time
the line is drawn. I prefer to keep this 'if' statement.
>
> >> +}
> >> +
> >> +static void efi_bootmenu_display_statusline(struct menu *m)
> >> +{
> >> + struct efi_bootmenu_entry *entry;
> >> + struct efi_bootmenu *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);
>
> Please, minimize the number of function calls. This can be a single
> printf() call instread of 14 function invocations.
OK.
Thanks,
Masahisa Kojima
>
> Best regards
>
> Heinrich
>
> >> +}
> >> +
> >> +static char *efi_bootmenu_choice_entry(void *data)
> >> +{
> >> + int i;
> >> + int esc = 0;
> >> + struct efi_bootmenu_entry *iter;
> >> + enum bootmenu_key key = KEY_NONE;
> >> + struct efi_bootmenu *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;
> >> + }
> >
> > I don't fully understand how bootmenu works with key strokes,
> > but I think that this kind of key handling is quite generic
> > and put it as a common helper function.
> >
> >> + }
> >> +
> >> + /* never happens */
> >> + debug("bootmgr menu: this should not happen");
> >> + return NULL;
> >> +}
> >> +
> >> +static void efi_bootmenu_destroy(struct efi_bootmenu *bootmgr_menu)
> >> +{
> >> + struct efi_bootmenu_entry *next;
> >> + struct efi_bootmenu_entry *iter = bootmgr_menu->first;
> >> +
> >> + while (iter) {
> >> + next = iter->next;
> >> + free(iter);
> >> + iter = next;
> >> + }
> >> + free(bootmgr_menu);
> >> +}
> >> +
> >> +/**
> >> + * efi_bootmenu_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_bootmenu_process_common(const struct efi_bootmenu_item *items,
> >> + int count, int delay)
> >> +{
> >> + u32 i;
> >> + bool exit = false;
> >> + efi_status_t ret;
> >> + struct menu *menu;
> >> + void *choice = NULL;
> >> + struct efi_bootmenu_entry *entry;
> >> + struct efi_bootmenu *bootmgr_menu;
> >> + struct efi_bootmenu_entry *iter = NULL;
> >> +
> >> + if (count > EFI_BOOTMENU_ENTRY_NUM_MAX)
> >> + return EFI_OUT_OF_RESOURCES;
> >> +
> >> + bootmgr_menu = calloc(1, sizeof(struct efi_bootmenu));
> >> + 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_bootmenu_entry));
> >> + if (!entry) {
> >> + ret = EFI_LOAD_ERROR;
> >> + goto out;
> >> + }
> >> +
> >> + entry->num = 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_bootmenu_display_statusline,
> >> + efi_bootmenu_print_entry, efi_bootmenu_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->num == (entry->bootmgr_menu->count - 1)) {
> >> + ret = EFI_ABORTED;
> >> + break;
> >> + }
> >> + }
> >> + }
> >> +
> >> +out:
> >> + menu_destroy(menu);
> >> + efi_bootmenu_destroy(bootmgr_menu);
> >> +
> >> + puts(ANSI_CLEAR_CONSOLE);
> >> + printf(ANSI_CURSOR_POSITION, 1, 1);
> >> + puts(ANSI_CURSOR_SHOW);
> >> +
> >> + return ret;
> >> +}
> >> +
> >> +static efi_status_t efi_bootmenu_volume_selected(void *data, bool *exit)
> >> +{
> >> + struct efi_bootmenu_volume_entry_data *info = data;
> >> +
> >> + *exit = true;
> >> +
> >> + if (info) {
> >> + info->bo->current_volume = info->v;
> >> + info->bo->dp_volume = info->dp;
> >> + }
> >> +
> >> + return EFI_SUCCESS;
> >> +}
> >> +
> >> +static efi_status_t efi_bootmenu_file_selected(void *data, bool *exit)
> >> +{
> >> + struct efi_bootmenu_file_entry_data *info = data;
> >> +
> >> + *exit = true;
> >> +
> >> + if (!info)
> >> + return EFI_INVALID_PARAMETER;
> >> +
> >> + if (u16_strcmp(info->file_name, u".") == 0 &&
> >> + u16_strlen(info->file_name) == 1) {
> >> + /* stay current path */
> >> + } else if (u16_strcmp(info->file_name, u"..") == 0 &&
> >> + u16_strlen(info->file_name) == 2) {
> >> + struct efi_bootmenu_filepath_info *iter;
> >> + struct list_head *pos, *n;
> >> + int is_last;
> >> +
> >> + memset(info->bo->current_path, 0, EFI_BOOTMENU_FILE_PATH_BUF_SIZE);
> >> + list_for_each_safe(pos, n, &info->bo->filepath_list) {
> >> + iter = list_entry(pos, struct efi_bootmenu_filepath_info, list);
> >> +
> >> + is_last = list_is_last(&iter->list, &info->bo->filepath_list);
> >> + if (is_last) {
> >> + list_del(&iter->list);
> >> + free(iter->name);
> >> + free(iter);
> >> + break;
> >> + }
> >> + u16_strlcat(info->bo->current_path, iter->name,
> >> + EFI_BOOTMENU_FILE_PATH_MAX);
> >> + u16_strlcat(info->bo->current_path, u"\\",
> >> + EFI_BOOTMENU_FILE_PATH_MAX);
> >> + }
> >> + } else {
> >> + size_t new_len;
> >> + struct efi_bootmenu_filepath_info *filepath;
> >> +
> >> + new_len = u16_strlen(info->bo->current_path) +
> >> + u16_strlen(info->file_name);
> >> + if (new_len >= EFI_BOOTMENU_FILE_PATH_MAX) {
> >> + /* TODO: show error notification to user */
> >> + log_err("file path is too long\n");
> >> + return EFI_INVALID_PARAMETER;
> >> + }
> >> + u16_strlcat(info->bo->current_path, info->file_name,
> >> + EFI_BOOTMENU_FILE_PATH_MAX);
> >> +
> >> + filepath = calloc(1, sizeof(struct efi_bootmenu_filepath_info));
> >> + if (!filepath)
> >> + return EFI_OUT_OF_RESOURCES;
> >> +
> >> + filepath->name = u16_strdup(info->file_name);
> >> + if (!filepath->name) {
> >> + free(filepath);
> >> + return EFI_OUT_OF_RESOURCES;
> >> + }
> >> + list_add_tail(&filepath->list, &info->bo->filepath_list);
> >> +
> >> + if (info->is_directory) {
> >> + /*
> >> + * Remainig buffer should have enough space to contain u"\\" and
> >> + * at least one character for file name
> >> + */
> >> + if (new_len + 2 >= EFI_BOOTMENU_FILE_PATH_MAX) {
> >> + log_err("directory path is too long\n");
> >> + return EFI_INVALID_PARAMETER;
> >> + }
> >> + u16_strlcat(info->bo->current_path, u"\\",
> >> + EFI_BOOTMENU_FILE_PATH_MAX);
> >> + } else {
> >> + info->bo->file_selected = true;
> >> + }
> >> + }
> >> + return EFI_SUCCESS;
> >> +}
> >> +
> >> +static efi_status_t efi_bootmenu_select_volume(struct efi_bootmenu_boot_option *bo)
> >> +{
> >> + u32 i;
> >> + efi_status_t ret;
> >> + efi_uintn_t count;
> >> + struct efi_handler *handler;
> >> + struct efi_device_path *device_path;
> >> + efi_handle_t *volume_handles = NULL;
> >> + struct efi_simple_file_system_protocol *v;
> >> + struct efi_bootmenu_item *menu_item, *iter;
> >> +
> >> + ret = efi_locate_handle_buffer_int(BY_PROTOCOL, &efi_simple_file_system_protocol_guid,
> >> + NULL, &count, (efi_handle_t **)&volume_handles);
> >> + if (ret != EFI_SUCCESS)
> >> + return ret;
> >> +
> >> + menu_item = calloc(count + 1, sizeof(struct efi_bootmenu_item));
> >> + if (!menu_item) {
> >> + ret = EFI_OUT_OF_RESOURCES;
> >> + goto out1;
> >> + }
> >> +
> >> + iter = menu_item;
> >> + for (i = 0; i < count; i++) {
> >> + u16 *dev_name, *p;
> >> + struct efi_block_io *block_io;
> >> + char buf[BOOTMENU_DEVICE_NAME_MAX];
> >> + struct efi_bootmenu_volume_entry_data *info;
> >> +
> >> + 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 efi_bootmenu_volume_entry_data));
> >> + if (!info) {
> >> + ret = EFI_OUT_OF_RESOURCES;
> >> + goto out2;
> >> + }
> >> +
> >> + efi_disk_get_device_name(block_io, buf, BOOTMENU_DEVICE_NAME_MAX);
> >> + dev_name = calloc(1, (strlen(buf) + 1) * sizeof(u16));
> >> + if (!dev_name) {
> >> + free(info);
> >> + ret = EFI_OUT_OF_RESOURCES;
> >> + goto out2;
> >> + }
> >> + p = dev_name;
> >> + utf8_utf16_strncpy(&p, buf, strlen(buf));
> >> +
> >> + info->v = v;
> >> + info->dp = device_path;
> >> + info->bo = bo;
> >> + iter->title = dev_name;
> >> + iter->func = efi_bootmenu_volume_selected;
> >> + iter->data = info;
> >> + iter++;
> >> + }
> >> +
> >> + iter->title = u16_strdup(u"Quit");
> >> + iter->func = NULL;
> >> + iter->data = NULL;
> >> + count += 1;
> >> +
> >> + ret = efi_bootmenu_process_common(menu_item, count, -1);
> >> +
> >> +out2:
> >> + iter = menu_item;
> >> + for (i = 0; i < count; i++) {
> >> + struct efi_bootmenu_volume_entry_data *p;
> >> +
> >> + p = (struct efi_bootmenu_volume_entry_data *)(iter->data);
> >> + free(iter->title);
> >> + free(p);
> >> + iter++;
> >> + }
> >> +
> >> + free(menu_item);
> >> +
> >> +out1:
> >> + efi_free_pool(volume_handles);
> >> +
> >> + return ret;
> >> +}
> >> +
> >> +static efi_status_t efi_bootmenu_select_file(struct efi_bootmenu_boot_option *bo,
> >> + struct efi_file_handle *root)
> >> +{
> >> + u32 i;
> >> + struct efi_file_info *buf;
> >> + u32 count = 0;
> >> + efi_uintn_t len;
> >> + efi_status_t ret;
> >> + struct efi_file_handle *f;
> >> + struct efi_bootmenu_item *menu_item, *iter;
> >> +
> >> + buf = calloc(1, sizeof(struct efi_file_info) + EFI_BOOTMENU_FILE_PATH_BUF_SIZE);
> >> + if (!buf)
> >> + return EFI_OUT_OF_RESOURCES;
> >> +
> >> + while (!bo->file_selected) {
> >> + count = 0;
> >> +
> >> + ret = efi_file_open_int(root, &f, bo->current_path, EFI_FILE_MODE_READ, 0);
> >> + if (ret != EFI_SUCCESS)
> >> + return ret;
> >> +
> >> + /* calculate directory information total count */
> >> + for (;;) {
> >> + len = sizeof(struct efi_file_info) + EFI_BOOTMENU_FILE_PATH_BUF_SIZE;
> >> + ret = efi_file_read_int(f, &len, buf);
> >> + if (ret != EFI_SUCCESS || len == 0)
> >> + break;
> >> +
> >> + count++;
> >> + }
> >> +
> >> + menu_item = calloc(count + 1, sizeof(struct efi_bootmenu_item));
> >> + if (!menu_item) {
> >> + efi_file_close_int(f);
> >> + ret = EFI_OUT_OF_RESOURCES;
> >> + goto out;
> >> + }
> >> +
> >> + /* read directory and construct menu structure */
> >> + efi_file_setpos_int(f, 0);
> >> + iter = menu_item;
> >> + for (i = 0; i < count; i++) {
> >> + u16 *name;
> >> + int name_len;
> >> + struct efi_bootmenu_file_entry_data *info;
> >> +
> >> + len = sizeof(struct efi_file_info) + EFI_BOOTMENU_FILE_PATH_BUF_SIZE;
> >> + ret = efi_file_read_int(f, &len, buf);
> >> + if (ret != EFI_SUCCESS || len == 0)
> >> + goto err;
> >> +
> >> + info = calloc(1, sizeof(struct efi_bootmenu_file_entry_data));
> >> + if (!info) {
> >> + ret = EFI_OUT_OF_RESOURCES;
> >> + goto err;
> >> + }
> >> +
> >> + if (buf->attribute & EFI_FILE_DIRECTORY) {
> >> + /* append u'/' at the end of directory name */
> >> + name_len = u16_strsize(buf->file_name) + sizeof(u16);
> >> + name = calloc(1, name_len);
> >> + if (!name) {
> >> + ret = EFI_OUT_OF_RESOURCES;
> >> + goto err;
> >> + }
> >> + u16_strcpy(name, buf->file_name);
> >> + name[u16_strlen(buf->file_name)] = u'/';
> >> +
> >> + info->is_directory = true;
> >> + } else {
> >> + name_len = u16_strsize(buf->file_name);
> >> + name = calloc(1, name_len);
> >> + if (!name) {
> >> + ret = EFI_OUT_OF_RESOURCES;
> >> + goto err;
> >> + }
> >> + u16_strcpy(name, buf->file_name);
> >> + }
> >> +
> >> + info->file_name = u16_strdup(buf->file_name);
> >> + info->bo = bo;
> >> + iter->title = name;
> >> + iter->func = efi_bootmenu_file_selected;
> >> + iter->data = info;
> >> + iter++;
> >> + }
> >> +
> >> + /* add "Quit" entry */
> >> + iter->title = u"Quit";
> >> + iter->func = NULL;
> >> + iter->data = NULL;
> >> + count += 1;
> >> +
> >> + ret = efi_bootmenu_process_common(menu_item, count, -1);
> >> +err:
> >> + efi_file_close_int(f);
> >> + iter = menu_item;
> >> + for (i = 0; i < count - 1; i++, iter++) {
> >> + free(((struct efi_bootmenu_file_entry_data *)(iter->data))->file_name);
> >> + free(iter->title);
> >> + free(iter->data);
> >> + }
> >> +
> >> + free(menu_item);
> >> +
> >> + if (ret != EFI_SUCCESS)
> >> + break;
> >> + }
> >> +
> >> +out:
> >> + free(buf);
> >> + return ret;
> >> +}
> >> +
> >> +static efi_status_t efi_bootmenu_boot_add_enter_name(struct efi_bootmenu_boot_option *bo)
> >> +{
> >> + efi_status_t ret;
> >> +
> >> + printf(ANSI_CURSOR_POSITION, 2, 1);
> >> + puts(" *** U-Boot EFI Boot Manager Menu ***");
> >> + printf(ANSI_CURSOR_POSITION, 4, 1);
> >> + puts(" enter name:");
> >> +
> >> + printf(ANSI_CURSOR_POSITION, 8, 1);
> >> + puts(" ENTER to complete, ESC/CTRL+C to quit");
> >> +
> >> + ret = efi_console_get_u16_string(cin, cout, bo->boot_name,
> >> + EFI_BOOTMENU_BOOT_NAME_MAX, NULL, 4, 15);
> >> +
> >> + return ret;
> >> +}
> >
> > I prefer to see a menu like:
> > BOOTxxxx
> > title:
> > file:
> > option(arguments):
> > set:
> > cancel:
> > rather than being prompted one by one.
> >
> > Then users can select any of items in arbitrary order to define them
> > or to quit the menu.
> >
> > This way, the same menu can be re-used to *modify* an existing entry.
> >
> >> +
> >> +static efi_status_t efi_bootmenu_select_file_handler(struct efi_bootmenu_boot_option *bo)
> >> +{
> >> + efi_status_t ret;
> >> + struct efi_file_handle *root;
> >> +
> >> + bo->file_selected = false;
> >> +
> >> + while (!bo->file_selected) {
> >> + bo->current_volume = NULL;
> >> + memset(bo->current_path, 0, EFI_BOOTMENU_FILE_PATH_BUF_SIZE);
> >> +
> >> + ret = efi_bootmenu_select_volume(bo);
> >> + if (ret != EFI_SUCCESS)
> >> + return ret;
> >> +
> >> + if (!bo->current_volume)
> >> + return EFI_INVALID_PARAMETER;
> >> +
> >> + ret = efi_open_volume_int(bo->current_volume, &root);
> >> + if (ret != EFI_SUCCESS)
> >> + return ret;
> >> +
> >> + ret = efi_bootmenu_select_file(bo, root);
> >> + if (ret != EFI_SUCCESS)
> >> + return ret;
> >> + }
> >> +
> >> + ret = efi_bootmenu_boot_add_enter_name(bo);
> >> +
> >> + return ret;
> >> +}
> >> +
> >> +efi_status_t efi_bootmenu_get_unused_bootoption(u16 *buf,
> >> + efi_uintn_t buf_size, u32 *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;
> >> +}
> >> +
> >> +static efi_status_t efi_bootmenu_set_boot_option(u16 *var_name, struct efi_device_path *dp,
> >> + 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 = efi_dp_size(dp) + sizeof(END);
> >> + 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(var_name, &efi_global_variable_guid,
> >> + EFI_VARIABLE_NON_VOLATILE |
> >> + EFI_VARIABLE_BOOTSERVICE_ACCESS |
> >> + EFI_VARIABLE_RUNTIME_ACCESS,
> >> + size, p, false);
> >> + free(p);
> >> +
> >> + return ret;
> >> +}
> >> +
> >> +efi_status_t efi_bootmenu_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;
> >> +}
> >> +
> >> +static efi_status_t efi_bootmenu_process_add_boot_option(void *data, bool *exit)
> >> +{
> >> + u32 index;
> >> + u16 var_name[9];
> >> + char *buf = NULL;
> >> + efi_status_t ret;
> >> + char *iter = NULL;
> >> + struct list_head *pos, *n;
> >> + efi_uintn_t dp_size, fp_size;
> >> + struct efi_bootmenu_boot_option bo;
> >> + struct efi_device_path_file_path *fp;
> >> + struct efi_bootmenu_filepath_info *item;
> >> +
> >> + ret = efi_bootmenu_get_unused_bootoption(var_name, sizeof(var_name),
> >> + &index);
> >> + if (ret != EFI_SUCCESS)
> >> + return ret;
> >> +
> >> + bo.current_path = calloc(1, EFI_BOOTMENU_FILE_PATH_BUF_SIZE);
> >> + if (!bo.current_path)
> >> + goto out;
> >> +
> >> + bo.boot_name = calloc(1, EFI_BOOTMENU_BOOT_NAME_MAX * sizeof(u16));
> >> + if (!bo.boot_name)
> >> + goto out;
> >> +
> >> + INIT_LIST_HEAD(&bo.filepath_list);
> >> +
> >> + ret = efi_bootmenu_select_file_handler(&bo);
> >> + if (ret != EFI_SUCCESS)
> >> + goto out;
> >> +
> >> + dp_size = efi_dp_size(bo.dp_volume);
> >> + fp_size = sizeof(struct efi_device_path) +
> >> + ((u16_strlen(bo.current_path) + 1) * sizeof(u16));
> >> + buf = calloc(1, dp_size + fp_size + sizeof(END));
> >> + if (!buf)
> >> + goto out;
> >> +
> >> + iter = buf;
> >> + memcpy(iter, bo.dp_volume, dp_size);
> >> + iter += dp_size;
> >> +
> >> + fp = (struct efi_device_path_file_path *)iter;
> >> + 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, bo.current_path);
> >> + iter += fp_size;
> >> + *((struct efi_device_path *)iter) = END;
> >> +
> >> + ret = efi_bootmenu_set_boot_option(var_name, (struct efi_device_path *)buf,
> >> + bo.boot_name, NULL);
> >> + if (ret != EFI_SUCCESS)
> >> + goto out;
> >> +
> >> + efi_bootmenu_append_bootorder((u16)index);
> >> + if (ret != EFI_SUCCESS)
> >> + goto out;
> >
> > This if statement doesn't make sense.
> >
> >> +
> >> +out:
> >> + free(buf);
> >> + free(bo.boot_name);
> >> + free(bo.current_path);
> >> +
> >> + list_for_each_safe(pos, n, &bo.filepath_list) {
> >> + item = list_entry(pos, struct efi_bootmenu_filepath_info, list);
> >> + list_del(&item->list);
> >> + free(item->name);
> >> + free(item);
> >> + }
> >> +
> >> + return ret;
> >> +}
> >> +
> >> +static efi_status_t efi_bootmenu_init(void)
> >> +{
> >> + efi_status_t ret;
> >> + struct efi_handler *handler;
> >> +
> >> + 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;
> >> +
> >> + ret = efi_search_protocol(efi_root, &efi_guid_text_output_protocol, &handler);
> >> + if (ret != EFI_SUCCESS)
> >> + return ret;
> >> +
> >> + ret = efi_protocol_open(handler, (void **)&cout, efi_root, NULL,
> >> + EFI_OPEN_PROTOCOL_GET_PROTOCOL);
> >> + if (ret != EFI_SUCCESS)
> >> + return ret;
> >> +
> >> + return ret;
> >> +}
> >> +
> >> +static const struct efi_bootmenu_item maintenance_menu_items[] = {
> >> + {u"Add Boot Option", efi_bootmenu_process_add_boot_option},
> >> + {u"Quit", NULL},
> >> +};
> >> +
> >> +efi_status_t efi_bootmenu_show_maintenance_menu(void)
> >> +{
> >> + efi_status_t ret;
> >> +
> >> + ret = efi_bootmenu_init();
> >> + if (ret != EFI_SUCCESS)
> >> + return ret;
> >> +
> >> + return efi_bootmenu_process_common(maintenance_menu_items,
> >> + ARRAY_SIZE(maintenance_menu_items),
> >> + -1);
> >> +}
> >> diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c
> >> index 4da64b5d29..1233418e77 100644
> >> --- a/lib/efi_loader/efi_boottime.c
> >> +++ b/lib/efi_loader/efi_boottime.c
> >> @@ -2453,6 +2453,35 @@ static efi_status_t EFIAPI efi_protocols_per_handle(
> >> return EFI_EXIT(EFI_SUCCESS);
> >> }
> >>
> >> +efi_status_t efi_locate_handle_buffer_int(enum efi_locate_search_type search_type,
> >> + const efi_guid_t *protocol, void *search_key,
> >> + efi_uintn_t *no_handles, efi_handle_t **buffer)
> >> +{
> >> + efi_status_t r;
> >> + efi_uintn_t buffer_size = 0;
> >> +
> >> + if (!no_handles || !buffer) {
> >> + r = EFI_INVALID_PARAMETER;
> >> + goto out;
> >> + }
> >> + *no_handles = 0;
> >> + *buffer = NULL;
> >> + r = efi_locate_handle(search_type, protocol, search_key, &buffer_size,
> >> + *buffer);
> >> + if (r != EFI_BUFFER_TOO_SMALL)
> >> + goto out;
> >> + r = efi_allocate_pool(EFI_BOOT_SERVICES_DATA, buffer_size,
> >> + (void **)buffer);
> >> + if (r != EFI_SUCCESS)
> >> + goto out;
> >> + r = efi_locate_handle(search_type, protocol, search_key, &buffer_size,
> >> + *buffer);
> >> + if (r == EFI_SUCCESS)
> >> + *no_handles = buffer_size / sizeof(efi_handle_t);
> >> +out:
> >> + return r;
> >> +}
> >> +
> >> /**
> >> * efi_locate_handle_buffer() - locate handles implementing a protocol
> >> * @search_type: selection criterion
> >> @@ -2474,30 +2503,13 @@ efi_status_t EFIAPI efi_locate_handle_buffer(
> >> efi_uintn_t *no_handles, efi_handle_t **buffer)
> >> {
> >> efi_status_t r;
> >> - efi_uintn_t buffer_size = 0;
> >>
> >> EFI_ENTRY("%d, %pUs, %p, %p, %p", search_type, protocol, search_key,
> >> no_handles, buffer);
> >>
> >> - if (!no_handles || !buffer) {
> >> - r = EFI_INVALID_PARAMETER;
> >> - goto out;
> >> - }
> >> - *no_handles = 0;
> >> - *buffer = NULL;
> >> - r = efi_locate_handle(search_type, protocol, search_key, &buffer_size,
> >> - *buffer);
> >> - if (r != EFI_BUFFER_TOO_SMALL)
> >> - goto out;
> >> - r = efi_allocate_pool(EFI_BOOT_SERVICES_DATA, buffer_size,
> >> - (void **)buffer);
> >> - if (r != EFI_SUCCESS)
> >> - goto out;
> >> - r = efi_locate_handle(search_type, protocol, search_key, &buffer_size,
> >> - *buffer);
> >> - if (r == EFI_SUCCESS)
> >> - *no_handles = buffer_size / sizeof(efi_handle_t);
> >> -out:
> >> + r = efi_locate_handle_buffer_int(search_type, protocol, search_key,
> >> + no_handles, buffer);
> >> +
> >> return EFI_EXIT(r);
> >> }
> >>
> >> diff --git a/lib/efi_loader/efi_console.c b/lib/efi_loader/efi_console.c
> >> index 60a3fc85ac..cf9622ed1a 100644
> >> --- a/lib/efi_loader/efi_console.c
> >> +++ b/lib/efi_loader/efi_console.c
> >> @@ -5,6 +5,7 @@
> >> * Copyright (c) 2016 Alexander Graf
> >> */
> >>
> >> +#include <ansi.h>
> >> #include <common.h>
> >> #include <charset.h>
> >> #include <malloc.h>
> >> @@ -1312,3 +1313,83 @@ out_of_memory:
> >> printf("ERROR: Out of memory\n");
> >> return r;
> >> }
> >> +
> >> +/**
> >> + * efi_console_get_u16_string() - get user input string
> >> + *
> >> + * @cin: protocol interface to EFI_SIMPLE_TEXT_INPUT_PROTOCOL
> >> + * @cout: protocol interface to EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL
> >> + * @buf: buffer to store user input string in UTF16
> >> + * @size: buffer size including NULL terminator
> >> + * @filter_func: callback to filter user input
> >> + * @row: row number to locate user input form
> >> + * @col: column number to locate user input form
> >> + * Return: status code
> >> + */
> >> +efi_status_t efi_console_get_u16_string(struct efi_simple_text_input_protocol *cin,
> >> + struct efi_simple_text_output_protocol *cout,
> >> + u16 *buf, efi_uintn_t size,
> >> + efi_console_filter_func filter_func,
> >> + int row, int col)
> >> +{
> >> + efi_status_t ret;
> >> + efi_uintn_t len = 0;
> >> + struct efi_input_key key;
> >> +
> >> + printf(ANSI_CURSOR_POSITION, row, col);
> >> + puts(ANSI_CLEAR_LINE_TO_END);
> >> + puts(ANSI_CURSOR_SHOW);
> >> +
> >> + ret = EFI_CALL(cin->reset(cin, false));
> >> + if (ret != EFI_SUCCESS)
> >> + return ret;
> >> +
> >> + for (;;) {
> >> + do {
> >> + ret = EFI_CALL(cin->read_key_stroke(cin, &key));
> >> + mdelay(10);
> >> + } while (ret == EFI_NOT_READY);
> >> +
> >> + if (key.unicode_char == u'\b') {
> >> + if (len > 0)
> >> + buf[--len] = u'\0';
> >> +
> >> + printf(ANSI_CURSOR_POSITION, row, col);
> >> + ret = EFI_CALL(cout->output_string(cout, buf));
> >> + if (ret != EFI_SUCCESS)
> >> + return ret;
> >> +
> >> + puts(ANSI_CLEAR_LINE_TO_END);
> >> + continue;
> >> + } else if (key.unicode_char == u'\r') {
> >> + if (len == 0) /* no user input */
> >> + continue;
> >> +
> >> + buf[len] = u'\0';
> >> + return EFI_SUCCESS;
> >> + } else if (key.unicode_char == 0x3 || key.scan_code == 23) {
> >> + return EFI_ABORTED;
> >> + } else if (key.unicode_char < 0x20) {
> >> + /* ignore control codes other than Ctrl+C, '\r' and '\b' */
> >> + continue;
> >> + } else if (key.scan_code != 0) {
> >> + /* only accept single ESC press for cancel */
> >> + continue;
> >> + }
> >> +
> >> + if (filter_func) {
> >> + if (filter_func(&key) != EFI_SUCCESS)
> >> + continue;
> >> + }
> >> +
> >> + if (len >= (size - 1))
> >> + continue;
> >> +
> >> + buf[len] = key.unicode_char;
> >> + len++;
> >> + printf(ANSI_CURSOR_POSITION, row, col);
> >> + ret = EFI_CALL(cout->output_string(cout, buf));
> >> + if (ret != EFI_SUCCESS)
> >> + return ret;
> >> + }
> >> +}
> >> diff --git a/lib/efi_loader/efi_disk.c b/lib/efi_loader/efi_disk.c
> >> index f5b462fb16..01576c8ed2 100644
> >> --- a/lib/efi_loader/efi_disk.c
> >> +++ b/lib/efi_loader/efi_disk.c
> >> @@ -751,3 +751,14 @@ efi_status_t efi_disk_init(void)
> >>
> >> return EFI_SUCCESS;
> >> }
> >> +
> >> +efi_status_t efi_disk_get_device_name(struct efi_block_io *this, char *buf, int size)
> >> +{
> >> + struct efi_disk_obj *diskobj;
> >> +
> >> + diskobj = container_of(this, struct efi_disk_obj, ops);
> >> +
> >> + snprintf(buf, size, "%s %d:%d", diskobj->ifname, diskobj->dev_index, diskobj->part);
> >> +
> >> + return EFI_SUCCESS;
> >> +}
> >
> > Please note that not all the BLOCK_IO interfaces have corresponding diskobj's,
> > in particular, efi_driver/efi_block_device.c.
> >
> > -Takahiro Akashi
> >
> >> diff --git a/lib/efi_loader/efi_file.c b/lib/efi_loader/efi_file.c
> >> index 7a7077e6d0..c96a7f7ca3 100644
> >> --- a/lib/efi_loader/efi_file.c
> >> +++ b/lib/efi_loader/efi_file.c
> >> @@ -246,10 +246,10 @@ error:
> >> return NULL;
> >> }
> >>
> >> -static efi_status_t efi_file_open_int(struct efi_file_handle *this,
> >> - struct efi_file_handle **new_handle,
> >> - u16 *file_name, u64 open_mode,
> >> - u64 attributes)
> >> +efi_status_t efi_file_open_int(struct efi_file_handle *this,
> >> + struct efi_file_handle **new_handle,
> >> + u16 *file_name, u64 open_mode,
> >> + u64 attributes)
> >> {
> >> struct file_handle *fh = to_fh(this);
> >> efi_status_t ret;
> >> @@ -369,11 +369,17 @@ static efi_status_t file_close(struct file_handle *fh)
> >> return EFI_SUCCESS;
> >> }
> >>
> >> -static efi_status_t EFIAPI efi_file_close(struct efi_file_handle *file)
> >> +efi_status_t efi_file_close_int(struct efi_file_handle *file)
> >> {
> >> struct file_handle *fh = to_fh(file);
> >> +
> >> + return file_close(fh);
> >> +}
> >> +
> >> +static efi_status_t EFIAPI efi_file_close(struct efi_file_handle *file)
> >> +{
> >> EFI_ENTRY("%p", file);
> >> - return EFI_EXIT(file_close(fh));
> >> + return EFI_EXIT(efi_file_close_int(file));
> >> }
> >>
> >> static efi_status_t EFIAPI efi_file_delete(struct efi_file_handle *file)
> >> @@ -562,8 +568,8 @@ static efi_status_t dir_read(struct file_handle *fh, u64 *buffer_size,
> >> return EFI_SUCCESS;
> >> }
> >>
> >> -static efi_status_t efi_file_read_int(struct efi_file_handle *this,
> >> - efi_uintn_t *buffer_size, void *buffer)
> >> +efi_status_t efi_file_read_int(struct efi_file_handle *this,
> >> + efi_uintn_t *buffer_size, void *buffer)
> >> {
> >> struct file_handle *fh = to_fh(this);
> >> efi_status_t ret = EFI_SUCCESS;
> >> @@ -773,24 +779,11 @@ out:
> >> return EFI_EXIT(ret);
> >> }
> >>
> >> -/**
> >> - * efi_file_setpos() - set current position in file
> >> - *
> >> - * This function implements the SetPosition service of the EFI file protocol.
> >> - * See the UEFI spec for details.
> >> - *
> >> - * @file: file handle
> >> - * @pos: new file position
> >> - * Return: status code
> >> - */
> >> -static efi_status_t EFIAPI efi_file_setpos(struct efi_file_handle *file,
> >> - u64 pos)
> >> +efi_status_t efi_file_setpos_int(struct efi_file_handle *file, u64 pos)
> >> {
> >> struct file_handle *fh = to_fh(file);
> >> efi_status_t ret = EFI_SUCCESS;
> >>
> >> - EFI_ENTRY("%p, %llu", file, pos);
> >> -
> >> if (fh->isdir) {
> >> if (pos != 0) {
> >> ret = EFI_UNSUPPORTED;
> >> @@ -812,6 +805,28 @@ static efi_status_t EFIAPI efi_file_setpos(struct efi_file_handle *file,
> >> fh->offset = pos;
> >>
> >> error:
> >> + return ret;
> >> +}
> >> +
> >> +/**
> >> + * efi_file_setpos() - set current position in file
> >> + *
> >> + * This function implements the SetPosition service of the EFI file protocol.
> >> + * See the UEFI spec for details.
> >> + *
> >> + * @file: file handle
> >> + * @pos: new file position
> >> + * Return: status code
> >> + */
> >> +static efi_status_t EFIAPI efi_file_setpos(struct efi_file_handle *file,
> >> + u64 pos)
> >> +{
> >> + efi_status_t ret = EFI_SUCCESS;
> >> +
> >> + EFI_ENTRY("%p, %llu", file, pos);
> >> +
> >> + ret = efi_file_setpos_int(file, pos);
> >> +
> >> return EFI_EXIT(ret);
> >> }
> >>
> >> @@ -1138,17 +1153,23 @@ struct efi_file_handle *efi_file_from_path(struct efi_device_path *fp)
> >> return f;
> >> }
> >>
> >> +efi_status_t efi_open_volume_int(struct efi_simple_file_system_protocol *this,
> >> + struct efi_file_handle **root)
> >> +{
> >> + struct file_system *fs = to_fs(this);
> >> +
> >> + *root = file_open(fs, NULL, NULL, 0, 0);
> >> +
> >> + return EFI_SUCCESS;
> >> +}
> >> +
> >> static efi_status_t EFIAPI
> >> efi_open_volume(struct efi_simple_file_system_protocol *this,
> >> struct efi_file_handle **root)
> >> {
> >> - struct file_system *fs = to_fs(this);
> >> -
> >> EFI_ENTRY("%p, %p", this, root);
> >>
> >> - *root = file_open(fs, NULL, NULL, 0, 0);
> >> -
> >> - return EFI_EXIT(EFI_SUCCESS);
> >> + return EFI_EXIT(efi_open_volume_int(this, root));
> >> }
> >>
> >> struct efi_simple_file_system_protocol *
> >> --
> >> 2.17.1
> >>
>
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