mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-05 02:51:00 +00:00
83a287a613
When ESC/CTRL+C is pressed interrupt bootmenu and jump into U-Boot console. As the last entry in bootmenu is always U-Boot console just choose the last entry when ESC or CTRL+C is pressed. ESC key is detected when either no other character appears after '\e' within 10ms or when non-'[' appears after '\e'. It is useful when bootmenu is part of boot process and you want to interrupt boot process by scripts which control U-Boot (serial) console. Signed-off-by: Pali Rohár <pali@kernel.org> Reviewed-by: Simon Glass <sjg@chromium.org>
542 lines
10 KiB
C
542 lines
10 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2011-2013 Pali Rohár <pali@kernel.org>
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*/
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#include <common.h>
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#include <command.h>
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#include <ansi.h>
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#include <env.h>
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#include <log.h>
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#include <menu.h>
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#include <watchdog.h>
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#include <malloc.h>
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#include <linux/delay.h>
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#include <linux/string.h>
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/* maximum bootmenu entries */
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#define MAX_COUNT 99
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/* maximal size of bootmenu env
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* 9 = strlen("bootmenu_")
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* 2 = strlen(MAX_COUNT)
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* 1 = NULL term
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*/
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#define MAX_ENV_SIZE (9 + 2 + 1)
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struct bootmenu_entry {
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unsigned short int num; /* unique number 0 .. MAX_COUNT */
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char key[3]; /* key identifier of number */
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char *title; /* title of entry */
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char *command; /* hush command of entry */
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struct bootmenu_data *menu; /* this bootmenu */
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struct bootmenu_entry *next; /* next menu entry (num+1) */
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};
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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 {
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KEY_NONE = 0,
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KEY_UP,
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KEY_DOWN,
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KEY_SELECT,
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KEY_QUIT,
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};
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static char *bootmenu_getoption(unsigned short int n)
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{
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char name[MAX_ENV_SIZE];
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if (n > MAX_COUNT)
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return NULL;
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sprintf(name, "bootmenu_%d", n);
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return env_get(name);
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}
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static void bootmenu_print_entry(void *data)
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{
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struct bootmenu_entry *entry = data;
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int reverse = (entry->menu->active == entry->num);
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/*
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* Move cursor to line where the entry will be drown (entry->num)
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* First 3 lines contain bootmenu header + 1 empty line
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*/
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printf(ANSI_CURSOR_POSITION, entry->num + 4, 1);
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puts(" ");
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if (reverse)
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puts(ANSI_COLOR_REVERSE);
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puts(entry->title);
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if (reverse)
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puts(ANSI_COLOR_RESET);
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}
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static void bootmenu_autoboot_loop(struct bootmenu_data *menu,
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enum bootmenu_key *key, int *esc)
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{
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int i, c;
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if (menu->delay > 0) {
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printf(ANSI_CURSOR_POSITION, menu->count + 5, 1);
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printf(" Hit any key to stop autoboot: %2d ", menu->delay);
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}
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while (menu->delay > 0) {
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for (i = 0; i < 100; ++i) {
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if (!tstc()) {
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WATCHDOG_RESET();
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mdelay(10);
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continue;
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}
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menu->delay = -1;
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c = getchar();
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switch (c) {
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case '\e':
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*esc = 1;
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*key = KEY_NONE;
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break;
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case '\r':
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*key = KEY_SELECT;
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break;
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case 0x3: /* ^C */
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*key = KEY_QUIT;
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break;
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default:
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*key = KEY_NONE;
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break;
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}
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break;
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}
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if (menu->delay < 0)
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break;
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--menu->delay;
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printf("\b\b\b%2d ", menu->delay);
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}
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printf(ANSI_CURSOR_POSITION, menu->count + 5, 1);
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puts(ANSI_CLEAR_LINE);
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if (menu->delay == 0)
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*key = KEY_SELECT;
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}
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static void bootmenu_loop(struct bootmenu_data *menu,
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enum bootmenu_key *key, int *esc)
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{
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int c;
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if (*esc == 1) {
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if (tstc()) {
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c = getchar();
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} else {
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WATCHDOG_RESET();
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mdelay(10);
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if (tstc())
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c = getchar();
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else
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c = '\e';
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}
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} else {
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while (!tstc()) {
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WATCHDOG_RESET();
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mdelay(10);
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}
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c = getchar();
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}
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switch (*esc) {
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case 0:
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/* First char of ANSI escape sequence '\e' */
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if (c == '\e') {
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*esc = 1;
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*key = KEY_NONE;
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}
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break;
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case 1:
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/* Second char of ANSI '[' */
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if (c == '[') {
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*esc = 2;
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*key = KEY_NONE;
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} else {
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/* Alone ESC key was pressed */
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*key = KEY_QUIT;
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*esc = (c == '\e') ? 1 : 0;
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}
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break;
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case 2:
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case 3:
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/* Third char of ANSI (number '1') - optional */
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if (*esc == 2 && c == '1') {
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*esc = 3;
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*key = KEY_NONE;
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break;
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}
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*esc = 0;
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/* ANSI 'A' - key up was pressed */
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if (c == 'A')
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*key = KEY_UP;
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/* ANSI 'B' - key down was pressed */
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else if (c == 'B')
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*key = KEY_DOWN;
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/* other key was pressed */
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else
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*key = KEY_NONE;
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break;
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}
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/* enter key was pressed */
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if (c == '\r')
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*key = KEY_SELECT;
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/* ^C was pressed */
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if (c == 0x3)
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*key = KEY_QUIT;
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}
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static char *bootmenu_choice_entry(void *data)
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{
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struct bootmenu_data *menu = data;
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struct bootmenu_entry *iter;
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enum bootmenu_key key = KEY_NONE;
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int esc = 0;
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int i;
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while (1) {
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if (menu->delay >= 0) {
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/* Autoboot was not stopped */
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bootmenu_autoboot_loop(menu, &key, &esc);
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} else {
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/* Some key was pressed, so autoboot was stopped */
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bootmenu_loop(menu, &key, &esc);
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}
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switch (key) {
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case KEY_UP:
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if (menu->active > 0)
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--menu->active;
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/* no menu key selected, regenerate menu */
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return NULL;
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case KEY_DOWN:
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if (menu->active < menu->count - 1)
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++menu->active;
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/* no menu key selected, regenerate menu */
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return NULL;
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case KEY_SELECT:
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iter = menu->first;
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for (i = 0; i < menu->active; ++i)
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iter = iter->next;
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return iter->key;
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case KEY_QUIT:
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/* Quit by choosing the last entry - U-Boot console */
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iter = menu->first;
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while (iter->next)
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iter = iter->next;
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return iter->key;
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default:
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break;
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}
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}
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/* never happens */
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debug("bootmenu: this should not happen");
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return NULL;
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}
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static void bootmenu_destroy(struct bootmenu_data *menu)
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{
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struct bootmenu_entry *iter = menu->first;
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struct bootmenu_entry *next;
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while (iter) {
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next = iter->next;
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free(iter->title);
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free(iter->command);
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free(iter);
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iter = next;
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}
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free(menu);
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}
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static struct bootmenu_data *bootmenu_create(int delay)
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{
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unsigned short int i = 0;
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const char *option;
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struct bootmenu_data *menu;
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struct bootmenu_entry *iter = NULL;
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int len;
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char *sep;
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char *default_str;
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struct bootmenu_entry *entry;
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menu = malloc(sizeof(struct bootmenu_data));
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if (!menu)
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return NULL;
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menu->delay = delay;
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menu->active = 0;
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menu->first = NULL;
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default_str = env_get("bootmenu_default");
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if (default_str)
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menu->active = (int)simple_strtol(default_str, NULL, 10);
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while ((option = bootmenu_getoption(i))) {
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sep = strchr(option, '=');
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if (!sep) {
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printf("Invalid bootmenu entry: %s\n", option);
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break;
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}
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entry = malloc(sizeof(struct bootmenu_entry));
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if (!entry)
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goto cleanup;
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len = sep-option;
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entry->title = malloc(len + 1);
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if (!entry->title) {
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free(entry);
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goto cleanup;
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}
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memcpy(entry->title, option, len);
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entry->title[len] = 0;
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len = strlen(sep + 1);
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entry->command = malloc(len + 1);
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if (!entry->command) {
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free(entry->title);
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free(entry);
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goto cleanup;
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}
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memcpy(entry->command, sep + 1, len);
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entry->command[len] = 0;
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sprintf(entry->key, "%d", i);
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entry->num = i;
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entry->menu = menu;
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entry->next = NULL;
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if (!iter)
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menu->first = entry;
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else
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iter->next = entry;
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iter = entry;
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++i;
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if (i == MAX_COUNT - 1)
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break;
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}
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/* Add U-Boot console entry at the end */
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if (i <= MAX_COUNT - 1) {
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entry = malloc(sizeof(struct bootmenu_entry));
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if (!entry)
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goto cleanup;
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entry->title = strdup("U-Boot console");
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if (!entry->title) {
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free(entry);
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goto cleanup;
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}
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entry->command = strdup("");
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if (!entry->command) {
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free(entry->title);
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free(entry);
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goto cleanup;
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}
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sprintf(entry->key, "%d", i);
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entry->num = i;
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entry->menu = menu;
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entry->next = NULL;
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if (!iter)
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menu->first = entry;
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else
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iter->next = entry;
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iter = entry;
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++i;
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}
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menu->count = i;
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if ((menu->active >= menu->count)||(menu->active < 0)) { //ensure active menuitem is inside menu
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printf("active menuitem (%d) is outside menu (0..%d)\n",menu->active,menu->count-1);
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menu->active=0;
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}
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return menu;
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cleanup:
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bootmenu_destroy(menu);
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return NULL;
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}
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static void menu_display_statusline(struct menu *m)
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{
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struct bootmenu_entry *entry;
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struct bootmenu_data *menu;
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if (menu_default_choice(m, (void *)&entry) < 0)
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return;
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menu = entry->menu;
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printf(ANSI_CURSOR_POSITION, 1, 1);
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puts(ANSI_CLEAR_LINE);
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printf(ANSI_CURSOR_POSITION, 2, 1);
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puts(" *** U-Boot Boot Menu ***");
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puts(ANSI_CLEAR_LINE_TO_END);
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printf(ANSI_CURSOR_POSITION, 3, 1);
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puts(ANSI_CLEAR_LINE);
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/* First 3 lines are bootmenu header + 2 empty lines between entries */
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printf(ANSI_CURSOR_POSITION, menu->count + 5, 1);
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puts(ANSI_CLEAR_LINE);
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printf(ANSI_CURSOR_POSITION, menu->count + 6, 1);
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puts(" Press UP/DOWN to move, ENTER to select, ESC/CTRL+C to quit");
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puts(ANSI_CLEAR_LINE_TO_END);
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printf(ANSI_CURSOR_POSITION, menu->count + 7, 1);
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puts(ANSI_CLEAR_LINE);
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}
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static void bootmenu_show(int delay)
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{
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int init = 0;
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void *choice = NULL;
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char *title = NULL;
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char *command = NULL;
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struct menu *menu;
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struct bootmenu_data *bootmenu;
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struct bootmenu_entry *iter;
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char *option, *sep;
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/* If delay is 0 do not create menu, just run first entry */
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if (delay == 0) {
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option = bootmenu_getoption(0);
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if (!option) {
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puts("bootmenu option 0 was not found\n");
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return;
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}
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sep = strchr(option, '=');
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if (!sep) {
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puts("bootmenu option 0 is invalid\n");
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return;
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}
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run_command(sep+1, 0);
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return;
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}
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bootmenu = bootmenu_create(delay);
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if (!bootmenu)
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return;
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menu = menu_create(NULL, bootmenu->delay, 1, menu_display_statusline,
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bootmenu_print_entry, bootmenu_choice_entry,
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bootmenu);
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if (!menu) {
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bootmenu_destroy(bootmenu);
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return;
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}
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for (iter = bootmenu->first; iter; iter = iter->next) {
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if (!menu_item_add(menu, iter->key, iter))
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goto cleanup;
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}
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/* Default menu entry is always first */
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menu_default_set(menu, "0");
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puts(ANSI_CURSOR_HIDE);
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puts(ANSI_CLEAR_CONSOLE);
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printf(ANSI_CURSOR_POSITION, 1, 1);
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init = 1;
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if (menu_get_choice(menu, &choice)) {
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iter = choice;
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title = strdup(iter->title);
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command = strdup(iter->command);
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}
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cleanup:
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menu_destroy(menu);
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bootmenu_destroy(bootmenu);
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if (init) {
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puts(ANSI_CURSOR_SHOW);
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puts(ANSI_CLEAR_CONSOLE);
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printf(ANSI_CURSOR_POSITION, 1, 1);
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}
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if (title && command) {
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debug("Starting entry '%s'\n", title);
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free(title);
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run_command(command, 0);
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free(command);
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}
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#ifdef CONFIG_POSTBOOTMENU
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run_command(CONFIG_POSTBOOTMENU, 0);
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#endif
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}
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#ifdef CONFIG_AUTOBOOT_MENU_SHOW
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int menu_show(int bootdelay)
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{
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bootmenu_show(bootdelay);
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return -1; /* -1 - abort boot and run monitor code */
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}
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#endif
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int do_bootmenu(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
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{
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char *delay_str = NULL;
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int delay = 10;
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#if defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY >= 0)
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delay = CONFIG_BOOTDELAY;
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#endif
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if (argc >= 2)
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delay_str = argv[1];
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if (!delay_str)
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delay_str = env_get("bootmenu_delay");
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if (delay_str)
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delay = (int)simple_strtol(delay_str, NULL, 10);
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bootmenu_show(delay);
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return 0;
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}
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U_BOOT_CMD(
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bootmenu, 2, 1, do_bootmenu,
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"ANSI terminal bootmenu",
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"[delay]\n"
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" - show ANSI terminal bootmenu with autoboot delay"
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);
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