[coreboot-gerrit] New patch to review for coreboot: util/ifdtool: Fix ICH Gbe unlock

[Patrick Rudolph]

Patrick Rudolph ([e-mail]) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/18055

-gerrit

commit d024b55e08d1312cd26b665a56f85b00c87b73bd
Author: Patrick Rudolph 
Date:   Sun Jan 8 09:57:47 2017 +0100

util/ifdtool: Fix ICH Gbe unlock

With coreboot 4.4 switched to "Descriptor mode" it automatically
    unlocks all flash regions. For Gbe the "Requester ID" was hardcoded
    resulting in *dead* Gbe on ICH9M.

Unlock the Gbe region and keep board specific "Requester ID".

Allows Lenovo T500 to boot in "Descriptor mode" with unlocked
    flash regions.

Signed-off-by: Patrick Rudolph

Change-Id: Ia4b5d1928e84bee42182fc83020e3a13fadc93c4
---
 util/ifdtool/ifdtool.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/util/ifdtool/ifdtool.c b/util/ifdtool/ifdtool.c
index 45dd97c..8db9e95 100644
--- a/util/ifdtool/ifdtool.c
+++ b/util/ifdtool/ifdtool.c
@@ -876,7 +876,8 @@ static void unlock_descriptor(char *filename, char *image, int size)
    } else {
    	fmba->flmstr1 = 0xffff0000;
    	fmba->flmstr2 = 0xffff0000;
-		fmba->flmstr3 = 0x08080118;
+		/* Keep board specific Requester ID */
+		fmba->flmstr3 = 0xffff0000 | (fmba->flmstr3 & 0xffff);
    }

write_image(filename, image, size);