[coreboot-gerrit] Change in coreboot[master]: drivers/txt/getsec_enteraccs.S: Make sure the MTRR save hits dram

[Arthur Heymans (Code Review)]

Arthur Heymans has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/46376 )

Change subject: drivers/txt/getsec_enteraccs.S: Make sure the MTRR save hits dram
......................................................................

drivers/txt/getsec_enteraccs.S: Make sure the MTRR save hits dram

Since we change the caching setup it is probably a good idea to make
sure our saved MTRR setup hits dram.

Change-Id: Ifa04f6de8af35c043fe049bc9a1bd3a8a4f1c330
Signed-off-by: Arthur Heymans 
---
M src/security/intel/txt/getsec_enteraccs.S
1 file changed, 1 insertion(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/76/46376/1

diff --git a/src/security/intel/txt/getsec_enteraccs.S b/src/security/intel/txt/getsec_enteraccs.S
index 563dc08..31f41ed 100644
--- a/src/security/intel/txt/getsec_enteraccs.S
+++ b/src/security/intel/txt/getsec_enteraccs.S
@@ -107,6 +107,7 @@
    movl	%cr0, %eax
    orl	$(CR0_CD | CR0_NW), %eax
    movl	%eax, %cr0
+	wbinvd

/* Disable fixed MTRRs */
    movl	$(MTRR_DEF_TYPE_MSR), %ecx