Akio Takebe
2009-May-26 13:55 UTC
[Xen-devel] [Patch][BIOS] fix trying to boot from next device
Hi,
If boot="ndc", rombios cannot try to boot next device.
Because rombios jump to the boot vector without pushing return address,
gPXE code and so on cannot return if it fail to boot.
This patch fixes this issue.
Signed-off-by: Akio Takebe <takebe_akio@jp.fujitsu.com>
Best Regards,
Akio　Takebe
---
diff -r 145e49b8574c tools/firmware/rombios/rombios.c
--- a/tools/firmware/rombios/rombios.c Tue May 19 23:44:28 2009 +0100
+++ b/tools/firmware/rombios/rombios.c Tue May 26 22:50:33 2009 +0900
@@ -8362,8 +8362,8 @@ ASM_END
/* Jump to the boot vector */
ASM_START
mov bp, sp
-// push cs
-// push #int18_handler
+ push cs
+ push #int18_handler
;; Build an iret stack frame that will take us to the boot vector.
;; iret pops ip, then cs, then flags, so push them in the opposite order.
pushf
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