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authorPekka Enberg <penberg@cs.helsinki.fi>2010-07-11 11:06:57 +0300
committerH. Peter Anvin <hpa@linux.intel.com>2010-07-12 14:46:00 -0700
commitfa97bdf92709adaaf8b9a5164a895e262a4fcf60 (patch)
treee34f1b6232c302e39065f3dd7ef8bbf4c8ac3d3d /arch/x86/boot/main.c
parent589643be6693c46fbc54bae77745f336c8ed4bcc (diff)
x86, setup: Early-boot serial I/O support
This patch adds serial I/O support to the real-mode setup (very early boot) printf(). It's useful for debugging boot code when running Linux under KVM, for example. The actual code was lifted from early printk. Cc: Cyrill Gorcunov <gorcunov@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> LKML-Reference: <1278835617-11368-1-git-send-email-penberg@cs.helsinki.fi> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'arch/x86/boot/main.c')
-rw-r--r--arch/x86/boot/main.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/boot/main.c b/arch/x86/boot/main.c
index 140172b895bd..4ef1a33e8572 100644
--- a/arch/x86/boot/main.c
+++ b/arch/x86/boot/main.c
@@ -130,6 +130,9 @@ void main(void)
/* First, copy the boot header into the "zeropage" */
copy_boot_params();
+ /* Initialize the early-boot console */
+ console_init();
+
/* End of heap check */
init_heap();