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kvmvapic: Use optionrom helpers

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Use OPTION_ROM_START/END from the common header file, add comment to
init code.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Jan Kiszka 2012-02-17 18:31:22 +01:00 committed by Avi Kivity
parent 209ca750b9
commit 501981126d
1 changed files with 8 additions and 10 deletions
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18
pc-bios/optionrom/kvmvapic.S
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@ -9,12 +9,10 @@
# option) any later version. See the COPYING file in the top-level directory.
#
.text 0
.code16
.global _start
_start:
.short 0xaa55
.byte (_end - _start) / 512
#include "optionrom.h"
OPTION_ROM_START
# clear vapic area: firmware load using rep insb may cause
# stale tpr/isr/irr data to corrupt the vapic area.
push %es
@ -26,8 +24,11 @@ _start:
cld
rep stosw
pop %es
# announce presence to the hypervisor
mov $vapic_base, %ax
out %ax, $0x7e
lret
.code32
@ -331,7 +332,4 @@ up_set_tpr_poll_irq:
vapic:
. = . + vapic_size
.byte 0 # reserve space for signature
.align 512, 0
_end:
OPTION_ROM_END