716087e2be
We are going to reduce reserved memory consumption by page table buffer, then OS can have more available memory to use. Take PhysicalAddressBits = 48 and 2MB page granularity as example, 1:1 Virtual to Physical identity mapping page table buffer needs to be ((512 + 1) * 512 + 1) * 4096 = 1075843072 bytes = 0x40201000 bytes. The code is updated to build 4G page table by default and only use 8 extra pages to handles > 4G request by page fault. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Star Zeng <star.zeng@intel.com> Reviewed-by: Jiewen Yao <jiewen.yao@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18069 6f19259b-4bc3-4df7-8a09-765794883524
103 lines
3.4 KiB
C
103 lines
3.4 KiB
C
/** @file
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Common header file.
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Copyright (c) 2011 - 2015, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#ifndef _CAPSULE_COMMON_HEADER_
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#define _CAPSULE_COMMON_HEADER_
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//
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// 8 extra pages for PF handler.
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//
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#define EXTRA_PAGE_TABLE_PAGES 8
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//
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// This capsule PEIM puts its private data at the start of the
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// coalesced capsule. Here's the structure definition.
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//
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#define EFI_CAPSULE_PEIM_PRIVATE_DATA_SIGNATURE SIGNATURE_32 ('C', 'a', 'p', 'P')
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#pragma pack(1)
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typedef struct {
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UINT64 Signature;
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UINT64 CapsuleAllImageSize;
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UINT64 CapsuleNumber;
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UINT64 CapsuleOffset[1];
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} EFI_CAPSULE_PEIM_PRIVATE_DATA;
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#pragma pack()
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#define CAPSULE_TEST_SIGNATURE SIGNATURE_32('T', 'E', 'S', 'T')
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#if defined (MDE_CPU_IA32) || defined (MDE_CPU_X64)
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#pragma pack(1)
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typedef struct {
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EFI_PHYSICAL_ADDRESS EntryPoint;
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EFI_PHYSICAL_ADDRESS StackBufferBase;
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UINT64 StackBufferLength;
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EFI_PHYSICAL_ADDRESS JumpBuffer;
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EFI_PHYSICAL_ADDRESS BlockListAddr;
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EFI_PHYSICAL_ADDRESS MemoryBase64Ptr;
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EFI_PHYSICAL_ADDRESS MemorySize64Ptr;
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BOOLEAN Page1GSupport;
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} SWITCH_32_TO_64_CONTEXT;
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typedef struct {
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UINT16 ReturnCs;
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EFI_PHYSICAL_ADDRESS ReturnEntryPoint;
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UINT64 ReturnStatus;
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//
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// NOTICE:
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// Be careful about the Base field of IA32_DESCRIPTOR
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// that is UINTN type.
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// To extend new field for this structure, add it to
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// right before this Gdtr field.
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//
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IA32_DESCRIPTOR Gdtr;
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} SWITCH_64_TO_32_CONTEXT;
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#pragma pack()
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#endif
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/**
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The function to coalesce a fragmented capsule in memory.
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@param PeiServices General purpose services available to every PEIM.
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@param BlockListBuffer Point to the buffer of Capsule Descriptor Variables.
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@param MemoryBase Pointer to the base of a block of memory that we can walk
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all over while trying to coalesce our buffers.
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On output, this variable will hold the base address of
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a coalesced capsule.
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@param MemorySize Size of the memory region pointed to by MemoryBase.
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On output, this variable will contain the size of the
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coalesced capsule.
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@retval EFI_NOT_FOUND if we can't determine the boot mode
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if the boot mode is not flash-update
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if we could not find the capsule descriptors
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@retval EFI_BUFFER_TOO_SMALL
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if we could not coalesce the capsule in the memory
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region provided to us
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@retval EFI_SUCCESS if there's no capsule, or if we processed the
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capsule successfully.
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**/
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EFI_STATUS
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EFIAPI
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CapsuleDataCoalesce (
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IN EFI_PEI_SERVICES **PeiServices,
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IN IN EFI_PHYSICAL_ADDRESS *BlockListBuffer,
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IN OUT VOID **MemoryBase,
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IN OUT UINTN *MemorySize
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);
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#endif
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