From 8332ddf556f0662d778169eae020d82d0226a445 Mon Sep 17 00:00:00 2001
From: Michael Brown <mcb30@etherboot.org>
Date: Tue, 5 Aug 2008 23:18:07 +0100
Subject: [PATCH] [romprefix] Fix ROM image copy on PCI 3.0 BIOSes

Add the missing instructions to the code path that I never tested due
to not having a PCI 3.0 system available.

(D'oh)
---
 src/arch/i386/prefix/romprefix.S | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/arch/i386/prefix/romprefix.S b/src/arch/i386/prefix/romprefix.S
index 698fa64e..e304d000 100644
--- a/src/arch/i386/prefix/romprefix.S
+++ b/src/arch/i386/prefix/romprefix.S
@@ -290,7 +290,9 @@ no_pmm:
 	movzbw	romheader_size, %cx
 	shlw	$9, %cx
 	movw	%ax, %es
-	rep	movsb
+	xorw	%si, %si
+	xorw	%di, %di
+	cs rep	movsb
 no_pci3:
 no_pci:
 	/* Prompt for POST-time shell */