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authorBen Collins <ben.collins@canonical.com>2008-06-18 14:04:35 -0400
committerIngo Molnar <mingo@elte.hu>2008-07-03 14:34:02 +0200
commit6bcb13b35a2ea39be6c7cc0292b8ad1191b1a748 (patch)
tree6c8238b6ef74c3606a987b62e9e53466afb67fd4 /arch/x86
parent2ee2394b682c0ee99b0f083abe6c57727e6edb69 (diff)
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: Ben Collins <ben.collins@canonical.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/Kconfig.debug8
-rw-r--r--arch/x86/boot/compressed/misc.c16
2 files changed, 19 insertions, 5 deletions
diff --git a/arch/x86/Kconfig.debug b/arch/x86/Kconfig.debug
index ac1e31ba4795..14abaa519221 100644
--- a/arch/x86/Kconfig.debug
+++ b/arch/x86/Kconfig.debug
@@ -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
diff --git a/arch/x86/boot/compressed/misc.c b/arch/x86/boot/compressed/misc.c
index d10e7274e1fc..11629e903aa5 100644
--- a/arch/x86/boot/compressed/misc.c
+++ b/arch/x86/boot/compressed/misc.c
@@ -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");