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.l...@citrix.com>
---
OvmfPkg/PlatformPei/MemDetect.c | 36 +++++++++++++++++++++++++++++++++++-
OvmfPkg/PlatformPei/Platform.h | 5 +++++
2 files changed, 40 insertions(+), 1 deletion(-)
diff --git a/OvmfPkg/PlatformPei/MemDetect.c b/OvmfPkg/PlatformPei/MemDetect.c
index 9f6ca19..dc44745 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 d63d124..01af2a9 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
--
1.7.10.4
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