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x86: config option to disable info from decompression of the kernel

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This patch allows the disabling of decompression messages during
x86 bootup.

Signed-off-by: Ben Collins <ben.collins@canonical.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ben Collins 2008-06-18 14:04:35 -04:00 committed by Ingo Molnar
parent 2ee2394b68
commit 6bcb13b35a
2 changed files with 19 additions and 5 deletions
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8
arch/x86/Kconfig.debug
View file

@ -16,6 +16,14 @@ config NONPROMISC_DEVMEM
obviously disasterous, but specific access can be used by people
debugging the kernel.
config X86_VERBOSE_BOOTUP
bool "Enable verbose x86 bootup info messages"
default y
help
Enables the informational output from the decompression stage
(e.g. bzImage) of the boot. If you disable this you will still
see errors. Disable this if you want silent bootup.
config EARLY_PRINTK
bool "Early printk" if EMBEDDED
default y

16
arch/x86/boot/compressed/misc.c
View file

@ -202,7 +202,8 @@ static void free(void *where);
static void *memset(void *s, int c, unsigned n);
static void *memcpy(void *dest, const void *src, unsigned n);
static void putstr(const char *);
static void __putstr(int, const char *);
#define putstr(__x) __putstr(0, __x)
#ifdef CONFIG_X86_64
#define memptr long
@ -266,11 +267,16 @@ static void scroll(void)
vidmem[i] = ' ';
}
static void putstr(const char *s)
static void __putstr(int error, const char *s)
{
int x, y, pos;
char c;
#ifndef CONFIG_X86_VERBOSE_BOOTUP
if (!error)
return;
#endif
#ifdef CONFIG_X86_32
if (real_mode->screen_info.orig_video_mode == 0 &&
lines == 0 && cols == 0)
@ -363,9 +369,9 @@ static void flush_window(void)
static void error(char *x)
{
putstr("\n\n");
putstr(x);
putstr("\n\n -- System halted");
__putstr(1, "\n\n");
__putstr(1, x);
__putstr(1, "\n\n -- System halted");
while (1)
asm("hlt");