From cec82a64cfd40ca0858cdc7bfd57c4115716b639 Mon Sep 17 00:00:00 2001
From: Min Xu <min.m.xu@intel.com>
Date: Sun, 6 Mar 2022 22:20:22 +0800
Subject: OvmfPkg/PlatformPei: Refactor NoexecDxeInitialization

BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3863

NoexecDxeInitialization is split into 2 functions:
 - PlatformNoexecDxeInitialization is for PlatformInitLib
 - NoexecDxeInitialization calls PlatformNoexecDxeInitialization and
   then sets PCD.

Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Brijesh Singh <brijesh.singh@amd.com>
Cc: Erdem Aktas <erdemaktas@google.com>
Cc: James Bottomley <jejb@linux.ibm.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Sebastien Boeuf <sebastien.boeuf@intel.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Signed-off-by: Min Xu <min.m.xu@intel.com>
---
 OvmfPkg/PlatformPei/Platform.c | 34 +++++++++++++++++++++-------------
 1 file changed, 21 insertions(+), 13 deletions(-)

(limited to 'OvmfPkg/PlatformPei')

diff --git a/OvmfPkg/PlatformPei/Platform.c b/OvmfPkg/PlatformPei/Platform.c
index b83bd75..e91acca 100644
--- a/OvmfPkg/PlatformPei/Platform.c
+++ b/OvmfPkg/PlatformPei/Platform.c
@@ -59,7 +59,6 @@ PlatformMemMapInitialization (
 {
   UINT64         PciIoBase;
   UINT64         PciIoSize;
-  RETURN_STATUS  PcdStatus;
   UINT32         TopOfLowRam;
   UINT64         PciExBarBase;
   UINT32         PciBase;
@@ -199,24 +198,33 @@ MemMapInitialization (
   ASSERT_RETURN_ERROR (PcdStatus);
 }
 
-#define UPDATE_BOOLEAN_PCD_FROM_FW_CFG(TokenName)                   \
-          do {                                                      \
-            BOOLEAN       Setting;                                  \
-            RETURN_STATUS PcdStatus;                                \
-                                                                    \
-            if (!RETURN_ERROR (QemuFwCfgParseBool (                 \
-                              "opt/ovmf/" #TokenName, &Setting))) { \
-              PcdStatus = PcdSetBoolS (TokenName, Setting);         \
-              ASSERT_RETURN_ERROR (PcdStatus);                      \
-            }                                                       \
-          } while (0)
+/**
+ * Fetch "opt/ovmf/PcdSetNxForStack" from QEMU
+ *
+ * @param Setting     The pointer to the setting of "/opt/ovmf/PcdSetNxForStack".
+ * @return EFI_SUCCESS  Successfully fetch the settings.
+ */
+EFI_STATUS
+EFIAPI
+PlatformNoexecDxeInitialization (
+  IN OUT EFI_HOB_PLATFORM_INFO  *PlatformInfoHob
+  )
+{
+  return QemuFwCfgParseBool ("opt/ovmf/PcdSetNxForStack", &PlatformInfoHob->PcdSetNxForStack);
+}
 
 VOID
 NoexecDxeInitialization (
   VOID
   )
 {
-  UPDATE_BOOLEAN_PCD_FROM_FW_CFG (PcdSetNxForStack);
+  RETURN_STATUS  Status;
+
+  Status = PlatformNoexecDxeInitialization (&mPlatformInfoHob);
+  if (!RETURN_ERROR (Status)) {
+    Status = PcdSetBoolS (PcdSetNxForStack, mPlatformInfoHob.PcdSetNxForStack);
+    ASSERT_RETURN_ERROR (Status);
+  }
 }
 
 VOID
-- 
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