From a9a0fea7981c9fa910726e52cb4b3aae8668006f Mon Sep 17 00:00:00 2001 From: Colin Watson Date: Mon, 13 Jan 2014 12:13:26 +0000 Subject: Add configure option to reduce visual clutter at boot time If this option is enabled, then do all of the following: Don't display introductory message about line editing unless we're actually offering a shell prompt. (This is believed to be a workaround for a different bug. We'll go with this for now, but will drop this in favour of a better fix upstream if somebody figures out what that is.) Don't clear the screen just before booting if we never drew the menu in the first place. Remove verbose messages printed before reading configuration. In some ways this is awkward because it makes debugging harder, but it's a requirement for a smooth-looking boot process; we may be able to do better in future. Upstream doesn't want this, though. Disable the cursor as well, for similar reasons of tidiness. Suppress kernel/initrd progress messages, except in recovery mode. Suppress "GRUB loading" message unless Shift is held down. Upstream doesn't want this, as it makes debugging harder. Ubuntu wants it to provide a cleaner boot experience. Bug-Ubuntu: https://bugs.launchpad.net/bugs/386922 Bug-Ubuntu: https://bugs.launchpad.net/bugs/861048 Forwarded: (partial) http://lists.gnu.org/archive/html/grub-devel/2009-09/msg00056.html Last-Update: 2014-01-03 Patch-Name: maybe_quiet.patch --- config.h.in | 2 ++ configure.ac | 16 ++++++++++++++++ grub-core/boot/i386/pc/boot.S | 11 +++++++++++ grub-core/boot/i386/pc/diskboot.S | 26 ++++++++++++++++++++++++++ grub-core/kern/main.c | 17 +++++++++++++++++ grub-core/kern/rescue_reader.c | 2 ++ grub-core/normal/main.c | 11 +++++++++++ grub-core/normal/menu.c | 17 +++++++++++++++-- util/grub.d/10_linux.in | 15 +++++++++++---- 9 files changed, 111 insertions(+), 6 deletions(-) diff --git a/config.h.in b/config.h.in index 4b63014..247cf11 100644 --- a/config.h.in +++ b/config.h.in @@ -11,6 +11,8 @@ /* Define to 1 to enable disk cache statistics. */ #define DISK_CACHE_STATS @DISK_CACHE_STATS@ #define BOOT_TIME_STATS @BOOT_TIME_STATS@ +/* Define to 1 to make GRUB quieter at boot time. */ +#define QUIET_BOOT @QUIET_BOOT@ #if defined (GRUB_BUILD) #undef ENABLE_NLS diff --git a/configure.ac b/configure.ac index fb4e2dd..7c8d0af 100644 --- a/configure.ac +++ b/configure.ac @@ -1583,6 +1583,17 @@ else fi AC_SUBST([UBUNTU_RECOVERY]) +AC_ARG_ENABLE([quiet-boot], + [AS_HELP_STRING([--enable-quiet-boot], + [emit fewer messages at boot time (default=no)])], + [], [enable_quiet_boot=no]) +if test x"$enable_quiet_boot" = xyes ; then + QUIET_BOOT=1 +else + QUIET_BOOT=0 +fi +AC_SUBST([QUIET_BOOT]) + LIBS="" AC_SUBST([FONT_SOURCE]) @@ -1837,5 +1848,10 @@ echo "Without liblzma (no support for XZ-compressed mips images) ($liblzma_excus else echo "With liblzma from $LIBLZMA (support for XZ-compressed mips images)" fi +if [ x"$enable_quiet_boot" = xyes ]; then +echo With quiet boot: Yes +else +echo With quiet boot: No +fi echo "*******************************************************" ] diff --git a/grub-core/boot/i386/pc/boot.S b/grub-core/boot/i386/pc/boot.S index b4975e2..7ebd96b 100644 --- a/grub-core/boot/i386/pc/boot.S +++ b/grub-core/boot/i386/pc/boot.S @@ -19,6 +19,9 @@ #include #include +#if defined(QUIET_BOOT) && !defined(HYBRID_BOOT) +#include +#endif /* * defines for the code go here @@ -249,9 +252,17 @@ real_start: /* save drive reference first thing! */ pushw %dx +#if defined(QUIET_BOOT) && !defined(HYBRID_BOOT) + /* is either shift key held down? */ + movw $(GRUB_MEMORY_MACHINE_BIOS_DATA_AREA_ADDR + 0x17), %bx + testb $3, (%bx) + jz 2f +#endif + /* print a notification message on the screen */ MSG(notification_string) +2: /* set %si to the disk address packet */ movw $disk_address_packet, %si diff --git a/grub-core/boot/i386/pc/diskboot.S b/grub-core/boot/i386/pc/diskboot.S index d030a14..7534991 100644 --- a/grub-core/boot/i386/pc/diskboot.S +++ b/grub-core/boot/i386/pc/diskboot.S @@ -18,6 +18,9 @@ #include #include +#ifdef QUIET_BOOT +#include +#endif /* * defines for the code go here @@ -25,6 +28,12 @@ #define MSG(x) movw $x, %si; call LOCAL(message) +#ifdef QUIET_BOOT +#define SILENT(x) call LOCAL(check_silent); jz LOCAL(x) +#else +#define SILENT(x) +#endif + .file "diskboot.S" .text @@ -50,11 +59,14 @@ _start: /* save drive reference first thing! */ pushw %dx + SILENT(after_notification_string) + /* print a notification message on the screen */ pushw %si MSG(notification_string) popw %si +LOCAL(after_notification_string): /* this sets up for the first run through "bootloop" */ movw $LOCAL(firstlist), %di @@ -279,7 +291,10 @@ LOCAL(copy_buffer): /* restore addressing regs and print a dot with correct DS (MSG modifies SI, which is saved, and unused AX and BX) */ popw %ds + SILENT(after_notification_step) MSG(notification_step) + +LOCAL(after_notification_step): popa /* check if finished with this dataset */ @@ -295,8 +310,11 @@ LOCAL(copy_buffer): /* END OF MAIN LOOP */ LOCAL(bootit): + SILENT(after_notification_done) /* print a newline */ MSG(notification_done) + +LOCAL(after_notification_done): popw %dx /* this makes sure %dl is our "boot" drive */ ljmp $0, $(GRUB_BOOT_MACHINE_KERNEL_ADDR + 0x200) @@ -320,6 +338,14 @@ LOCAL(general_error): /* go here when you need to stop the machine hard after an error condition */ LOCAL(stop): jmp LOCAL(stop) +#ifdef QUIET_BOOT +LOCAL(check_silent): + /* is either shift key held down? */ + movw $(GRUB_MEMORY_MACHINE_BIOS_DATA_AREA_ADDR + 0x17), %bx + testb $3, (%bx) + ret +#endif + notification_string: .asciz "loading" notification_step: .asciz "." diff --git a/grub-core/kern/main.c b/grub-core/kern/main.c index 9cad0c4..5613cd5 100644 --- a/grub-core/kern/main.c +++ b/grub-core/kern/main.c @@ -264,15 +264,25 @@ reclaim_module_space (void) void __attribute__ ((noreturn)) grub_main (void) { +#ifdef QUIET_BOOT + struct grub_term_output *term; +#endif + /* First of all, initialize the machine. */ grub_machine_init (); grub_boot_time ("After machine init."); +#ifdef QUIET_BOOT + /* Disable the cursor until we need it. */ + FOR_ACTIVE_TERM_OUTPUTS(term) + grub_term_setcursor (term, 0); +#else /* Hello. */ grub_setcolorstate (GRUB_TERM_COLOR_HIGHLIGHT); grub_printf ("Welcome to GRUB!\n\n"); grub_setcolorstate (GRUB_TERM_COLOR_STANDARD); +#endif grub_load_config (); @@ -308,5 +318,12 @@ grub_main (void) grub_boot_time ("After execution of embedded config. Attempt to go to normal mode"); grub_load_normal_mode (); + +#ifdef QUIET_BOOT + /* If we have to enter rescue mode, enable the cursor again. */ + FOR_ACTIVE_TERM_OUTPUTS(term) + grub_term_setcursor (term, 1); +#endif + grub_rescue_run (); } diff --git a/grub-core/kern/rescue_reader.c b/grub-core/kern/rescue_reader.c index dcd7d44..03826cf 100644 --- a/grub-core/kern/rescue_reader.c +++ b/grub-core/kern/rescue_reader.c @@ -78,7 +78,9 @@ grub_rescue_read_line (char **line, int cont, void __attribute__ ((noreturn)) grub_rescue_run (void) { +#ifdef QUIET_BOOT grub_printf ("Entering rescue mode...\n"); +#endif while (1) { diff --git a/grub-core/normal/main.c b/grub-core/normal/main.c index c36663f..99622cb 100644 --- a/grub-core/normal/main.c +++ b/grub-core/normal/main.c @@ -381,6 +381,15 @@ static grub_err_t grub_normal_read_line_real (char **line, int cont, int nested) { const char *prompt; +#ifdef QUIET_BOOT + static int displayed_intro; + + if (! displayed_intro) + { + grub_normal_reader_init (nested); + displayed_intro = 1; + } +#endif if (cont) /* TRANSLATORS: it's command line prompt. */ @@ -429,7 +438,9 @@ grub_cmdline_run (int nested) return; } +#ifndef QUIET_BOOT grub_normal_reader_init (nested); +#endif while (1) { diff --git a/grub-core/normal/menu.c b/grub-core/normal/menu.c index 2723547..7b55c27 100644 --- a/grub-core/normal/menu.c +++ b/grub-core/normal/menu.c @@ -826,12 +826,18 @@ run_menu (grub_menu_t menu, int nested, int *auto_boot) /* Callback invoked immediately before a menu entry is executed. */ static void -notify_booting (grub_menu_entry_t entry, +notify_booting (grub_menu_entry_t entry +#ifdef QUIET_BOOT + __attribute__((unused)) +#endif + , void *userdata __attribute__((unused))) { +#ifndef QUIET_BOOT grub_printf (" "); grub_printf_ (N_("Booting `%s'"), entry->title); grub_printf ("\n\n"); +#endif } /* Callback invoked when a default menu entry executed because of a timeout @@ -879,6 +885,9 @@ show_menu (grub_menu_t menu, int nested, int autobooted) int boot_entry; grub_menu_entry_t e; int auto_boot; +#ifdef QUIET_BOOT + int initial_timeout = grub_menu_get_timeout (); +#endif boot_entry = run_menu (menu, nested, &auto_boot); if (boot_entry < 0) @@ -888,7 +897,11 @@ show_menu (grub_menu_t menu, int nested, int autobooted) if (! e) continue; /* Menu is empty. */ - grub_cls (); +#ifdef QUIET_BOOT + /* Only clear the screen if we drew the menu in the first place. */ + if (initial_timeout != 0) +#endif + grub_cls (); if (auto_boot) grub_menu_execute_with_fallback (menu, e, autobooted, diff --git a/util/grub.d/10_linux.in b/util/grub.d/10_linux.in index 1b55116..0616c6d 100644 --- a/util/grub.d/10_linux.in +++ b/util/grub.d/10_linux.in @@ -21,6 +21,7 @@ prefix="@prefix@" exec_prefix="@exec_prefix@" datarootdir="@datarootdir@" ubuntu_recovery="@UBUNTU_RECOVERY@" +quiet_boot="@QUIET_BOOT@" . "@datadir@/@PACKAGE@/grub-mkconfig_lib" @@ -146,10 +147,12 @@ linux_entry () fi printf '%s\n' "${prepare_boot_cache}" | sed "s/^/$submenu_indentation/" fi - message="$(gettext_printf "Loading Linux %s ..." ${version})" - sed "s/^/$submenu_indentation/" << EOF + if [ x"$quiet_boot" = x0 ] || [ x"$type" != xsimple ]; then + message="$(gettext_printf "Loading Linux %s ..." ${version})" + sed "s/^/$submenu_indentation/" << EOF echo '$(echo "$message" | grub_quote)' EOF + fi if test -d /sys/firmware/efi && test -e "${linux}.efi.signed"; then sed "s/^/$submenu_indentation/" << EOF linux ${rel_dirname}/${basename}.efi.signed root=${linux_root_device_thisversion} ro ${args} @@ -161,9 +164,13 @@ EOF fi if test -n "${initrd}" ; then # TRANSLATORS: ramdisk isn't identifier. Should be translated. - message="$(gettext_printf "Loading initial ramdisk ...")" - sed "s/^/$submenu_indentation/" << EOF + if [ x"$quiet_boot" = x0 ] || [ x"$type" != xsimple ]; then + message="$(gettext_printf "Loading initial ramdisk ...")" + sed "s/^/$submenu_indentation/" << EOF echo '$(echo "$message" | grub_quote)' +EOF + fi + sed "s/^/$submenu_indentation/" << EOF initrd ${rel_dirname}/${initrd} EOF fi