mirror of
https://github.com/AsahiLinux/u-boot
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32bab0eae5
Avoid duplicating some of the escape-sequence processing here and use the CLI function instead. Signed-off-by: Simon Glass <sjg@chromium.org>
104 lines
3.1 KiB
C
104 lines
3.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright 2010-2011 Calxeda, Inc.
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*/
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#ifndef __MENU_H__
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#define __MENU_H__
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struct cli_ch_state;
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struct menu;
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struct menu *menu_create(char *title, int timeout, int prompt,
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void (*display_statusline)(struct menu *),
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void (*item_data_print)(void *),
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char *(*item_choice)(void *),
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void *item_choice_data);
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int menu_default_set(struct menu *m, char *item_key);
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int menu_get_choice(struct menu *m, void **choice);
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int menu_item_add(struct menu *m, char *item_key, void *item_data);
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int menu_destroy(struct menu *m);
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int menu_default_choice(struct menu *m, void **choice);
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/**
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* menu_show() Show a boot menu
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*
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* This shows a menu and lets the user select an option. The menu is defined by
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* environment variables (see README.bootmenu).
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*
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* This function doesn't normally return, but if the users requests the command
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* problem, it will.
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*
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* @bootdelay: Delay to wait before running the default menu option (0 to run
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* the entry immediately)
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* Return: If it returns, it always returns -1 to indicate that the boot should
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* be aborted and the command prompt should be provided
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*/
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int menu_show(int bootdelay);
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struct bootmenu_data {
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int delay; /* delay for autoboot */
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int active; /* active menu entry */
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int count; /* total count of menu entries */
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struct bootmenu_entry *first; /* first menu entry */
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};
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/** enum bootmenu_key - keys that can be returned by the bootmenu */
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enum bootmenu_key {
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BKEY_NONE = 0,
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BKEY_UP,
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BKEY_DOWN,
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BKEY_SELECT,
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BKEY_QUIT,
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BKEY_PLUS,
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BKEY_MINUS,
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BKEY_SPACE,
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};
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/**
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* bootmenu_autoboot_loop() - handle autobooting if no key is pressed
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*
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* This shows a prompt to allow the user to press a key to interrupt auto boot
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* of the first menu option.
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*
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* It then waits for the required time (menu->delay in seconds) for a key to be
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* pressed. If nothing is pressed in that time, @key returns KEY_SELECT
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* indicating that the current option should be chosen.
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*
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* @menu: Menu being processed
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* @esc: Set to 1 if the escape key is pressed, otherwise not updated
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* Returns: code for the key the user pressed:
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* enter: KEY_SELECT
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* Ctrl-C: KEY_QUIT
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* anything else: KEY_NONE
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*/
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enum bootmenu_key bootmenu_autoboot_loop(struct bootmenu_data *menu,
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struct cli_ch_state *cch);
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/**
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* bootmenu_loop() - handle waiting for a keypress when autoboot is disabled
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*
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* This is used when the menu delay is negative, indicating that the delay has
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* elapsed, or there was no delay to begin with.
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*
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* It reads a character and processes it, returning a menu-key code if a
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* character is recognised
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*
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* @menu: Menu being processed
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* @esc: On input, a non-zero value indicates that an escape sequence has
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* resulted in that many characters so far. On exit this is updated to the
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* new number of characters
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* Returns: code for the key the user pressed:
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* enter: BKEY_SELECT
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* Ctrl-C: BKEY_QUIT
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* Up arrow: BKEY_UP
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* Down arrow: BKEY_DOWN
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* Escape (by itself): BKEY_QUIT
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* Plus: BKEY_PLUS
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* Minus: BKEY_MINUS
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* Space: BKEY_SPACE
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*/
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enum bootmenu_key bootmenu_loop(struct bootmenu_data *menu,
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struct cli_ch_state *cch);
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#endif /* __MENU_H__ */
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