mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-23 16:17:40 +01:00
183 lines
4.8 KiB
C
183 lines
4.8 KiB
C
/** @file
|
|
Data structure and functions to allocate and free memory space.
|
|
|
|
Copyright (c) 2006 - 2017, Intel Corporation. All rights reserved.<BR>
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
|
|
**/
|
|
|
|
#ifndef _IMEM_H_
|
|
#define _IMEM_H_
|
|
|
|
//
|
|
// +---------------------------------------------------+
|
|
// | 0..(EfiMaxMemoryType - 1) - Normal memory type |
|
|
// +---------------------------------------------------+
|
|
// | EfiMaxMemoryType..0x6FFFFFFF - Invalid |
|
|
// +---------------------------------------------------+
|
|
// | 0x70000000..0x7FFFFFFF - OEM reserved |
|
|
// +---------------------------------------------------+
|
|
// | 0x80000000..0xFFFFFFFF - OS reserved |
|
|
// +---------------------------------------------------+
|
|
//
|
|
#define MEMORY_TYPE_OS_RESERVED_MIN 0x80000000
|
|
#define MEMORY_TYPE_OS_RESERVED_MAX 0xFFFFFFFF
|
|
#define MEMORY_TYPE_OEM_RESERVED_MIN 0x70000000
|
|
#define MEMORY_TYPE_OEM_RESERVED_MAX 0x7FFFFFFF
|
|
|
|
//
|
|
// MEMORY_MAP_ENTRY
|
|
//
|
|
|
|
#define MEMORY_MAP_SIGNATURE SIGNATURE_32('m','m','a','p')
|
|
typedef struct {
|
|
UINTN Signature;
|
|
LIST_ENTRY Link;
|
|
BOOLEAN FromPages;
|
|
|
|
EFI_MEMORY_TYPE Type;
|
|
UINT64 Start;
|
|
UINT64 End;
|
|
|
|
UINT64 VirtualStart;
|
|
UINT64 Attribute;
|
|
} MEMORY_MAP;
|
|
|
|
//
|
|
// Internal prototypes
|
|
//
|
|
|
|
|
|
/**
|
|
Internal function. Used by the pool functions to allocate pages
|
|
to back pool allocation requests.
|
|
|
|
@param PoolType The type of memory for the new pool pages
|
|
@param NumberOfPages No of pages to allocate
|
|
@param Alignment Bits to align.
|
|
@param NeedGuard Flag to indicate Guard page is needed or not
|
|
|
|
@return The allocated memory, or NULL
|
|
|
|
**/
|
|
VOID *
|
|
CoreAllocatePoolPages (
|
|
IN EFI_MEMORY_TYPE PoolType,
|
|
IN UINTN NumberOfPages,
|
|
IN UINTN Alignment,
|
|
IN BOOLEAN NeedGuard
|
|
);
|
|
|
|
|
|
|
|
/**
|
|
Internal function. Frees pool pages allocated via AllocatePoolPages ()
|
|
|
|
@param Memory The base address to free
|
|
@param NumberOfPages The number of pages to free
|
|
|
|
**/
|
|
VOID
|
|
CoreFreePoolPages (
|
|
IN EFI_PHYSICAL_ADDRESS Memory,
|
|
IN UINTN NumberOfPages
|
|
);
|
|
|
|
|
|
|
|
/**
|
|
Internal function to allocate pool of a particular type.
|
|
Caller must have the memory lock held
|
|
|
|
@param PoolType Type of pool to allocate
|
|
@param Size The amount of pool to allocate
|
|
@param NeedGuard Flag to indicate Guard page is needed or not
|
|
|
|
@return The allocate pool, or NULL
|
|
|
|
**/
|
|
VOID *
|
|
CoreAllocatePoolI (
|
|
IN EFI_MEMORY_TYPE PoolType,
|
|
IN UINTN Size,
|
|
IN BOOLEAN NeedGuard
|
|
);
|
|
|
|
|
|
|
|
/**
|
|
Internal function to free a pool entry.
|
|
Caller must have the memory lock held
|
|
|
|
@param Buffer The allocated pool entry to free
|
|
@param PoolType Pointer to pool type
|
|
|
|
@retval EFI_INVALID_PARAMETER Buffer not valid
|
|
@retval EFI_SUCCESS Buffer successfully freed.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
CoreFreePoolI (
|
|
IN VOID *Buffer,
|
|
OUT EFI_MEMORY_TYPE *PoolType OPTIONAL
|
|
);
|
|
|
|
|
|
|
|
/**
|
|
Enter critical section by gaining lock on gMemoryLock.
|
|
|
|
**/
|
|
VOID
|
|
CoreAcquireMemoryLock (
|
|
VOID
|
|
);
|
|
|
|
|
|
/**
|
|
Exit critical section by releasing lock on gMemoryLock.
|
|
|
|
**/
|
|
VOID
|
|
CoreReleaseMemoryLock (
|
|
VOID
|
|
);
|
|
|
|
/**
|
|
Allocates pages from the memory map.
|
|
|
|
@param Type The type of allocation to perform
|
|
@param MemoryType The type of memory to turn the allocated pages
|
|
into
|
|
@param NumberOfPages The number of pages to allocate
|
|
@param Memory A pointer to receive the base allocated memory
|
|
address
|
|
@param NeedGuard Flag to indicate Guard page is needed or not
|
|
|
|
@return Status. On success, Memory is filled in with the base address allocated
|
|
@retval EFI_INVALID_PARAMETER Parameters violate checking rules defined in
|
|
spec.
|
|
@retval EFI_NOT_FOUND Could not allocate pages match the requirement.
|
|
@retval EFI_OUT_OF_RESOURCES No enough pages to allocate.
|
|
@retval EFI_SUCCESS Pages successfully allocated.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
CoreInternalAllocatePages (
|
|
IN EFI_ALLOCATE_TYPE Type,
|
|
IN EFI_MEMORY_TYPE MemoryType,
|
|
IN UINTN NumberOfPages,
|
|
IN OUT EFI_PHYSICAL_ADDRESS *Memory,
|
|
IN BOOLEAN NeedGuard
|
|
);
|
|
|
|
//
|
|
// Internal Global data
|
|
//
|
|
|
|
extern EFI_LOCK gMemoryLock;
|
|
extern LIST_ENTRY gMemoryMap;
|
|
extern LIST_ENTRY mGcdMemorySpaceMap;
|
|
#endif
|