diff options
Diffstat (limited to 'roms/edk2/MdePkg/Library/PeiResourcePublicationLib/PeiResourcePublicationLib.c')
-rw-r--r-- | roms/edk2/MdePkg/Library/PeiResourcePublicationLib/PeiResourcePublicationLib.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/roms/edk2/MdePkg/Library/PeiResourcePublicationLib/PeiResourcePublicationLib.c b/roms/edk2/MdePkg/Library/PeiResourcePublicationLib/PeiResourcePublicationLib.c new file mode 100644 index 000000000..d2833585b --- /dev/null +++ b/roms/edk2/MdePkg/Library/PeiResourcePublicationLib/PeiResourcePublicationLib.c @@ -0,0 +1,52 @@ +/** @file
+ Resource Publication Library that uses PEI Core Services to publish system memory.
+
+ Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+
+
+#include <PiPei.h>
+
+
+#include <Library/ResourcePublicationLib.h>
+#include <Library/PeiServicesLib.h>
+#include <Library/DebugLib.h>
+
+
+/**
+ Declares the presence of permanent system memory in the platform.
+
+ Declares that the system memory buffer specified by MemoryBegin and MemoryLength
+ as permanent memory that may be used for general purpose use by software.
+ The amount of memory available to software may be less than MemoryLength
+ if published memory has alignment restrictions.
+ If MemoryLength is 0, then ASSERT().
+ If MemoryLength is greater than (MAX_ADDRESS - MemoryBegin + 1), then ASSERT().
+
+ @param MemoryBegin The start address of the memory being declared.
+ @param MemoryLength The number of bytes of memory being declared.
+
+ @retval RETURN_SUCCESS The memory buffer was published.
+ @retval RETURN_OUT_OF_RESOURCES There are not enough resources to publish the memory buffer
+
+**/
+RETURN_STATUS
+EFIAPI
+PublishSystemMemory (
+ IN PHYSICAL_ADDRESS MemoryBegin,
+ IN UINT64 MemoryLength
+ )
+{
+ EFI_STATUS Status;
+
+ ASSERT (MemoryLength > 0);
+ ASSERT (MemoryLength <= (MAX_ADDRESS - MemoryBegin + 1));
+
+ Status = PeiServicesInstallPeiMemory (MemoryBegin, MemoryLength);
+
+ return (RETURN_STATUS) Status;
+}
+
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