[XS] Change in coreboot[main]: security/intel/txt: Add support for x86_64

[Patrick Rudolph (Code Review)]

Patrick Rudolph has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/79757?usp=email )

Change subject: security/intel/txt: Add support for x86_64
......................................................................

security/intel/txt: Add support for x86_64

Add support for x86_64 by using protected_mode wrapper functions.

UNTESTED.

Change-Id: I9ff12d1cc85931e5a68866223d346bfea9ca7c30
Signed-off-by: Patrick Rudolph 
---
M src/security/intel/txt/common.c
M src/security/intel/txt/getsec_enteraccs.S
M src/security/intel/txt/getsec_sclean.S
3 files changed, 6 insertions(+), 2 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/57/79757/1

diff --git a/src/security/intel/txt/common.c b/src/security/intel/txt/common.c
index b78394a..8d1b9be 100644
--- a/src/security/intel/txt/common.c
+++ b/src/security/intel/txt/common.c
@@ -8,6 +8,7 @@
 #include <cpu/x86/mtrr.h>
 #include <device/mmio.h>
 #include <lib.h>
+#include <mode_switch.h>
 #include <smp/node.h>
 #include <string.h>
 #include <types.h>
@@ -335,7 +336,7 @@
    /*
     * Invoke the BIOS ACM. If successful, the system will reset with memory unlocked.
     */
-	getsec_sclean((uintptr_t)acm_data, acm_len);
+	protected_mode_call_2arg(getsec_sclean, (uintptr_t)acm_data, acm_len);

/*
     * However, if this function returns, the BIOS ACM could not be invoked. This is bad.
@@ -360,7 +361,8 @@
    	return -1;

/* Call into assembly which invokes the referenced ACM */
-	getsec_enteraccs(input_params, (uintptr_t)acm_data, acm_len);
+	protected_mode_call_3arg(getsec_enteraccs, input_params,
+				 (uintptr_t)acm_data, acm_len);

cbfs_unmap(acm_data);

diff --git a/src/security/intel/txt/getsec_enteraccs.S b/src/security/intel/txt/getsec_enteraccs.S
index ff9db05..a6f21b2 100644
--- a/src/security/intel/txt/getsec_enteraccs.S
+++ b/src/security/intel/txt/getsec_enteraccs.S
@@ -30,6 +30,7 @@

.align 4
 .text
+.code32

/*
  * See "SAFER MODE EXTENSIONS REFERENCE."
diff --git a/src/security/intel/txt/getsec_sclean.S b/src/security/intel/txt/getsec_sclean.S
index 0944e15..6a5b105 100644
--- a/src/security/intel/txt/getsec_sclean.S
+++ b/src/security/intel/txt/getsec_sclean.S
@@ -10,6 +10,7 @@

.align 4
 .text
+.code32

/*
  * void getsec_sclean(const uint32_t acm_base, const uint32_t acm_size);