diff options
author | Pali Rohár <pali@kernel.org> | 2020-12-27 01:04:38 +0100 |
---|---|---|
committer | Tom Rini <trini@konsulko.com> | 2021-01-16 14:49:09 -0500 |
commit | 83a287a613f3f50aceaf8f0131402b5093368009 (patch) | |
tree | f95b262c278afd8cd26a10b6d0075d482707d5e4 /cmd | |
parent | 976a68a20d366e6497253bad9fe0d7a8e42a611c (diff) | |
download | u-boot-83a287a613f3f50aceaf8f0131402b5093368009.tar.gz u-boot-83a287a613f3f50aceaf8f0131402b5093368009.tar.xz u-boot-83a287a613f3f50aceaf8f0131402b5093368009.zip |
bootmenu: Allow to quit it via ESC/CTRL+C
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>
Diffstat (limited to 'cmd')
-rw-r--r-- | cmd/bootmenu.c | 42 |
1 files changed, 35 insertions, 7 deletions
diff --git a/cmd/bootmenu.c b/cmd/bootmenu.c index 1ba7b622e5..409ef9a848 100644 --- a/cmd/bootmenu.c +++ b/cmd/bootmenu.c @@ -45,6 +45,7 @@ enum bootmenu_key { KEY_UP, KEY_DOWN, KEY_SELECT, + KEY_QUIT, }; static char *bootmenu_getoption(unsigned short int n) @@ -109,6 +110,9 @@ static void bootmenu_autoboot_loop(struct bootmenu_data *menu, case '\r': *key = KEY_SELECT; break; + case 0x3: /* ^C */ + *key = KEY_QUIT; + break; default: *key = KEY_NONE; break; @@ -136,13 +140,25 @@ static void bootmenu_loop(struct bootmenu_data *menu, { int c; - while (!tstc()) { - WATCHDOG_RESET(); - mdelay(10); + if (*esc == 1) { + if (tstc()) { + c = getchar(); + } else { + WATCHDOG_RESET(); + mdelay(10); + if (tstc()) + c = getchar(); + else + c = '\e'; + } + } else { + while (!tstc()) { + WATCHDOG_RESET(); + mdelay(10); + } + c = getchar(); } - c = getchar(); - switch (*esc) { case 0: /* First char of ANSI escape sequence '\e' */ @@ -157,7 +173,9 @@ static void bootmenu_loop(struct bootmenu_data *menu, *esc = 2; *key = KEY_NONE; } else { - *esc = 0; + /* Alone ESC key was pressed */ + *key = KEY_QUIT; + *esc = (c == '\e') ? 1 : 0; } break; case 2: @@ -187,6 +205,10 @@ static void bootmenu_loop(struct bootmenu_data *menu, /* enter key was pressed */ if (c == '\r') *key = KEY_SELECT; + + /* ^C was pressed */ + if (c == 0x3) + *key = KEY_QUIT; } static char *bootmenu_choice_entry(void *data) @@ -222,6 +244,12 @@ static char *bootmenu_choice_entry(void *data) for (i = 0; i < menu->active; ++i) iter = iter->next; return iter->key; + case KEY_QUIT: + /* Quit by choosing the last entry - U-Boot console */ + iter = menu->first; + while (iter->next) + iter = iter->next; + return iter->key; default: break; } @@ -389,7 +417,7 @@ static void menu_display_statusline(struct menu *m) printf(ANSI_CURSOR_POSITION, menu->count + 5, 1); puts(ANSI_CLEAR_LINE); printf(ANSI_CURSOR_POSITION, menu->count + 6, 1); - puts(" Press UP/DOWN to move, ENTER to select"); + puts(" Press UP/DOWN to move, ENTER to select, ESC/CTRL+C to quit"); puts(ANSI_CLEAR_LINE_TO_END); printf(ANSI_CURSOR_POSITION, menu->count + 7, 1); puts(ANSI_CLEAR_LINE); |