Commit 6bcb13b3 authored by Ben Collins's avatar Ben Collins Committed by Ingo Molnar
Browse files

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



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

Signed-off-by: default avatarBen Collins <ben.collins@canonical.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 2ee2394b

arch/x86/Kconfig.debug

+8 −0
Original line number Diff line number Diff line
@@ -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

arch/x86/boot/compressed/misc.c

+11 −5
Original line number Diff line number Diff line
@@ -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");