[coreboot] New patch to review for coreboot: 8963535 Don't re-init EBDA in S3 resume path.

[Stefan Reinauer (stefan.reinauer@coreboot.org)]

Stefan Reinauer (stefan.reinauer at coreboot.org) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/770

-gerrit

commit 8963535f0da1e1e464c48b200fab3288fe3db75b
Author: Duncan Laurie <dlaurie at chromium.org>
Date:   Wed Jan 18 10:05:18 2012 -0800

    Don't re-init EBDA in S3 resume path.
    
    I forgot to implement this the first time around.
    
    It does not seem to cause noticeable problems but
    in heavy suspend/resume testing I saw a suspicious
    crash in the kernel when trying to bring one of the
    CPUs back online.
    
    Change-Id: I950ac260f251e2683693d9bd20a0dd5e041aa26e
    Signed-off-by: Duncan Laurie <dlaurie at google.com>
---
 src/arch/x86/lib/ebda.c |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/src/arch/x86/lib/ebda.c b/src/arch/x86/lib/ebda.c
index faf1451..fb407b6 100644
--- a/src/arch/x86/lib/ebda.c
+++ b/src/arch/x86/lib/ebda.c
@@ -23,9 +23,18 @@
 #include <string.h>
 #include <arch/io.h>
 #include <arch/ebda.h>
+#if CONFIG_HAVE_ACPI_RESUME
+#include <arch/acpi.h>
+#endif
 
 void setup_ebda(u32 low_memory_size, u16 ebda_segment, u16 ebda_size)
 {
+#if CONFIG_HAVE_ACPI_RESUME
+	/* Skip in S3 resume path */
+	if (acpi_slp_type == 3)
+		return;
+#endif
+
 	if (!low_memory_size || !ebda_segment || !ebda_size)
 		return;