Add PeiServicesFreePages and update
comments for PeiServicesAllocatePages.
Cc: Liming Gao <[email protected]>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Star Zeng <[email protected]>
---
MdePkg/Include/Library/PeiServicesLib.h | 31 ++++++++++++++++++-----
MdePkg/Library/PeiServicesLib/PeiServicesLib.c | 35 ++++++++++++++++++++++----
2 files changed, 55 insertions(+), 11 deletions(-)
diff --git a/MdePkg/Include/Library/PeiServicesLib.h
b/MdePkg/Include/Library/PeiServicesLib.h
index 2b51d374c9b4..9fc22a10c178 100644
--- a/MdePkg/Include/Library/PeiServicesLib.h
+++ b/MdePkg/Include/Library/PeiServicesLib.h
@@ -1,7 +1,7 @@
/** @file
Provides library functions for all PEI Services.
-Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2006 - 2017, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD
License
which accompanies this distribution. The full text of the license may be
found at
@@ -264,16 +264,16 @@ PeiServicesInstallPeiMemory (
);
/**
- This service enables PEIMs to allocate memory after the permanent memory has
been installed by a
- PEIM.
+ This service enables PEIMs to allocate memory.
@param MemoryType Type of memory to allocate.
- @param Pages Number of pages to allocate.
+ @param Pages The number of pages to allocate.
@param Memory Pointer of memory allocated.
@retval EFI_SUCCESS The memory range was successfully allocated.
- @retval EFI_INVALID_PARAMETER Type is not equal to AllocateAnyPages.
- @retval EFI_NOT_AVAILABLE_YET Called with permanent memory not available.
+ @retval EFI_INVALID_PARAMETER Type is not equal to EfiLoaderCode,
EfiLoaderData, EfiRuntimeServicesCode,
+ EfiRuntimeServicesData, EfiBootServicesCode,
EfiBootServicesData,
+ EfiACPIReclaimMemory, EfiReservedMemoryType,
or EfiACPIMemoryNVS.
@retval EFI_OUT_OF_RESOURCES The pages could not be allocated.
**/
@@ -286,6 +286,25 @@ PeiServicesAllocatePages (
);
/**
+ This service enables PEIMs to free memory.
+
+ @param Memory Memory to be freed.
+ @param Pages The number of pages to free.
+
+ @retval EFI_SUCCESS The requested pages were freed.
+ @retval EFI_INVALID_PARAMETER Memory is not a page-aligned address or Pages
is invalid.
+ @retval EFI_NOT_FOUND The requested memory pages were not allocated
with
+ AllocatePages().
+
+**/
+EFI_STATUS
+EFIAPI
+PeiServicesFreePages (
+ IN EFI_PHYSICAL_ADDRESS Memory,
+ IN UINTN Pages
+ );
+
+/**
This service allocates memory from the Hand-Off Block (HOB) heap.
@param Size The number of bytes to allocate from the pool.
diff --git a/MdePkg/Library/PeiServicesLib/PeiServicesLib.c
b/MdePkg/Library/PeiServicesLib/PeiServicesLib.c
index cb303f083f0d..89166ccd38c3 100644
--- a/MdePkg/Library/PeiServicesLib/PeiServicesLib.c
+++ b/MdePkg/Library/PeiServicesLib/PeiServicesLib.c
@@ -1,7 +1,7 @@
/** @file
Implementation for PEI Services Library.
- Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>
+ Copyright (c) 2006 - 2017, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD
License
which accompanies this distribution. The full text of the license may be
found at
@@ -357,16 +357,16 @@ PeiServicesInstallPeiMemory (
}
/**
- This service enables PEIMs to allocate memory after the permanent memory has
been
- installed by a PEIM.
+ This service enables PEIMs to allocate memory.
@param MemoryType Type of memory to allocate.
@param Pages The number of pages to allocate.
@param Memory Pointer of memory allocated.
@retval EFI_SUCCESS The memory range was successfully allocated.
- @retval EFI_INVALID_PARAMETER Type is not equal to AllocateAnyPages.
- @retval EFI_NOT_AVAILABLE_YET Called with permanent memory not available.
+ @retval EFI_INVALID_PARAMETER Type is not equal to EfiLoaderCode,
EfiLoaderData, EfiRuntimeServicesCode,
+ EfiRuntimeServicesData, EfiBootServicesCode,
EfiBootServicesData,
+ EfiACPIReclaimMemory, EfiReservedMemoryType,
or EfiACPIMemoryNVS.
@retval EFI_OUT_OF_RESOURCES The pages could not be allocated.
**/
@@ -385,6 +385,31 @@ PeiServicesAllocatePages (
}
/**
+ This service enables PEIMs to free memory.
+
+ @param Memory Memory to be freed.
+ @param Pages The number of pages to free.
+
+ @retval EFI_SUCCESS The requested pages were freed.
+ @retval EFI_INVALID_PARAMETER Memory is not a page-aligned address or Pages
is invalid.
+ @retval EFI_NOT_FOUND The requested memory pages were not allocated
with
+ AllocatePages().
+
+**/
+EFI_STATUS
+EFIAPI
+PeiServicesFreePages (
+ IN EFI_PHYSICAL_ADDRESS Memory,
+ IN UINTN Pages
+ )
+{
+ CONST EFI_PEI_SERVICES **PeiServices;
+
+ PeiServices = GetPeiServicesTablePointer ();
+ return (*PeiServices)->FreePages (PeiServices, Memory, Pages);
+}
+
+/**
This service allocates memory from the Hand-Off Block (HOB) heap.
@param Size The number of bytes to allocate from the pool.
--
2.7.0.windows.1
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