From: Wei Liu <wei.liu2@citrix.com>
Date: Sun, 8 Dec 2013 01:36:07 +0000 (+0000)
Subject: OvmfPkg: introduce PublishPeiMemory
X-Git-Tag: edk2-stable201903~12013
X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=36658fff454167c716993cf649f6172361b0e7b2;p=mirror_edk2.git

OvmfPkg: introduce PublishPeiMemory

MemDetect actully does too many things, the underlying platform might
want to have more control over memory layout.

Extract the functionality of publishing PEI memory to a dedicated
function.

Also fixed wrong comment while I was there.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@14944 6f19259b-4bc3-4df7-8a09-765794883524
---

diff --git a/OvmfPkg/PlatformPei/MemDetect.c b/OvmfPkg/PlatformPei/MemDetect.c
index 9f6ca1942e..9145ebb89d 100644
--- a/OvmfPkg/PlatformPei/MemDetect.c
+++ b/OvmfPkg/PlatformPei/MemDetect.c
@@ -83,11 +83,45 @@ GetSystemMemorySizeAbove4gb (
   return LShiftU64 (Size, 16);
 }
 
+/**
+  Publish PEI core memory
+
+  @return EFI_SUCCESS     The PEIM initialized successfully.
+
+**/
+EFI_STATUS
+PublishPeiMemory (
+  VOID
+  )
+{
+  EFI_STATUS                  Status;
+  EFI_PHYSICAL_ADDRESS        MemoryBase;
+  UINT64                      MemorySize;
+  UINT64                      LowerMemorySize;
+
+  LowerMemorySize = GetSystemMemorySizeBelow4gb ();
+
+  MemoryBase = PcdGet32 (PcdOvmfMemFvBase) + PcdGet32 (PcdOvmfMemFvSize);
+  MemorySize = LowerMemorySize - MemoryBase;
+  if (MemorySize > SIZE_64MB) {
+    MemoryBase = LowerMemorySize - SIZE_64MB;
+    MemorySize = SIZE_64MB;
+  }
+
+  //
+  // Publish this memory to the PEI Core
+  //
+  Status = PublishSystemMemory(MemoryBase, MemorySize);
+  ASSERT_EFI_ERROR (Status);
+
+  return Status;
+}
+
 
 /**
   Peform Memory Detection
 
-  @return EFI_SUCCESS     The PEIM initialized successfully.
+  @return Top of memory
 
 **/
 EFI_PHYSICAL_ADDRESS
diff --git a/OvmfPkg/PlatformPei/Platform.h b/OvmfPkg/PlatformPei/Platform.h
index d63d124064..7344c610bb 100644
--- a/OvmfPkg/PlatformPei/Platform.h
+++ b/OvmfPkg/PlatformPei/Platform.h
@@ -57,6 +57,11 @@ AddUntestedMemoryRangeHob (
   EFI_PHYSICAL_ADDRESS        MemoryLimit
   );
 
+EFI_STATUS
+PublishPeiMemory (
+  VOID
+  );
+
 EFI_PHYSICAL_ADDRESS
 MemDetect (
   VOID