15290510db
On AArch64, the OS can choose to run with a page size of 64 KB, making it cumbersome to deal with UEFI reserved memory regions whose boundaries are not 64 KB aligned. So increase the allocation granularity for runtime regions to 64 KB. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Liming Gao <liming.gao@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17016 6f19259b-4bc3-4df7-8a09-765794883524
165 lines
3.7 KiB
C
165 lines
3.7 KiB
C
/** @file
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Data structure and functions to allocate and free memory space.
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Copyright (c) 2006 - 2008, 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 _IMEM_H_
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#define _IMEM_H_
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#if defined (MDE_CPU_IPF)
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///
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/// For Itanium machines make the default allocations 8K aligned
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///
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#define EFI_ACPI_RUNTIME_PAGE_ALLOCATION_ALIGNMENT (EFI_PAGE_SIZE * 2)
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#define DEFAULT_PAGE_ALLOCATION (EFI_PAGE_SIZE * 2)
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#elif defined (MDE_CPU_AARCH64)
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///
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/// 64-bit ARM systems allow the OS to execute with 64 KB page size,
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/// so for improved interoperability with the firmware, align the
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/// runtime regions to 64 KB as well
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///
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#define EFI_ACPI_RUNTIME_PAGE_ALLOCATION_ALIGNMENT (SIZE_64KB)
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#define DEFAULT_PAGE_ALLOCATION (EFI_PAGE_SIZE)
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#else
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///
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/// For genric EFI machines make the default allocations 4K aligned
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///
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#define EFI_ACPI_RUNTIME_PAGE_ALLOCATION_ALIGNMENT (EFI_PAGE_SIZE)
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#define DEFAULT_PAGE_ALLOCATION (EFI_PAGE_SIZE)
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#endif
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//
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// MEMORY_MAP_ENTRY
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//
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#define MEMORY_MAP_SIGNATURE SIGNATURE_32('m','m','a','p')
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typedef struct {
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UINTN Signature;
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LIST_ENTRY Link;
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BOOLEAN FromPages;
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EFI_MEMORY_TYPE Type;
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UINT64 Start;
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UINT64 End;
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UINT64 VirtualStart;
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UINT64 Attribute;
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} MEMORY_MAP;
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//
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// Internal prototypes
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//
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/**
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Internal function. Used by the pool functions to allocate pages
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to back pool allocation requests.
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@param PoolType The type of memory for the new pool pages
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@param NumberOfPages No of pages to allocate
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@param Alignment Bits to align.
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@return The allocated memory, or NULL
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**/
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VOID *
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CoreAllocatePoolPages (
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IN EFI_MEMORY_TYPE PoolType,
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IN UINTN NumberOfPages,
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IN UINTN Alignment
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);
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/**
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Internal function. Frees pool pages allocated via AllocatePoolPages ()
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@param Memory The base address to free
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@param NumberOfPages The number of pages to free
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**/
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VOID
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CoreFreePoolPages (
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IN EFI_PHYSICAL_ADDRESS Memory,
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IN UINTN NumberOfPages
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);
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/**
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Internal function to allocate pool of a particular type.
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Caller must have the memory lock held
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@param PoolType Type of pool to allocate
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@param Size The amount of pool to allocate
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@return The allocate pool, or NULL
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**/
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VOID *
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CoreAllocatePoolI (
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IN EFI_MEMORY_TYPE PoolType,
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IN UINTN Size
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);
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/**
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Internal function to free a pool entry.
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Caller must have the memory lock held
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@param Buffer The allocated pool entry to free
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@retval EFI_INVALID_PARAMETER Buffer not valid
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@retval EFI_SUCCESS Buffer successfully freed.
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**/
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EFI_STATUS
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CoreFreePoolI (
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IN VOID *Buffer
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);
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/**
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Enter critical section by gaining lock on gMemoryLock.
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**/
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VOID
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CoreAcquireMemoryLock (
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VOID
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);
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/**
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Exit critical section by releasing lock on gMemoryLock.
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**/
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VOID
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CoreReleaseMemoryLock (
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VOID
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);
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//
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// Internal Global data
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//
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extern EFI_LOCK gMemoryLock;
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extern LIST_ENTRY gMemoryMap;
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extern LIST_ENTRY mGcdMemorySpaceMap;
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#endif
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