mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-11-26 12:05:36 +01:00
488 lines
17 KiB
C
488 lines
17 KiB
C
/** @file
|
|
Provides services to allocate and free memory buffers of various memory types and alignments.
|
|
|
|
The Memory Allocation Library abstracts various common memory allocation operations. This library
|
|
allows code to be written in a phase-independent manner because the allocation of memory in PEI, DXE,
|
|
and SMM (for example) is done via a different mechanism. Using a common library interface makes it
|
|
much easier to port algorithms from phase to phase.
|
|
|
|
Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
|
|
**/
|
|
|
|
#ifndef __MEMORY_ALLOCATION_LIB_H__
|
|
#define __MEMORY_ALLOCATION_LIB_H__
|
|
|
|
/**
|
|
Allocates one or more 4KB pages of type EfiBootServicesData.
|
|
|
|
Allocates the number of 4KB pages of type EfiBootServicesData and returns a pointer to the
|
|
allocated buffer. The buffer returned is aligned on a 4KB boundary. If Pages is 0, then NULL
|
|
is returned. If there is not enough memory remaining to satisfy the request, then NULL is
|
|
returned.
|
|
|
|
@param Pages The number of 4 KB pages to allocate.
|
|
|
|
@return A pointer to the allocated buffer or NULL if allocation fails.
|
|
|
|
**/
|
|
VOID *
|
|
EFIAPI
|
|
AllocatePages (
|
|
IN UINTN Pages
|
|
);
|
|
|
|
/**
|
|
Allocates one or more 4KB pages of type EfiRuntimeServicesData.
|
|
|
|
Allocates the number of 4KB pages of type EfiRuntimeServicesData and returns a pointer to the
|
|
allocated buffer. The buffer returned is aligned on a 4KB boundary. If Pages is 0, then NULL
|
|
is returned. If there is not enough memory remaining to satisfy the request, then NULL is
|
|
returned.
|
|
|
|
@param Pages The number of 4 KB pages to allocate.
|
|
|
|
@return A pointer to the allocated buffer or NULL if allocation fails.
|
|
|
|
**/
|
|
VOID *
|
|
EFIAPI
|
|
AllocateRuntimePages (
|
|
IN UINTN Pages
|
|
);
|
|
|
|
/**
|
|
Allocates one or more 4KB pages of type EfiReservedMemoryType.
|
|
|
|
Allocates the number of 4KB pages of type EfiReservedMemoryType and returns a pointer to the
|
|
allocated buffer. The buffer returned is aligned on a 4KB boundary. If Pages is 0, then NULL
|
|
is returned. If there is not enough memory remaining to satisfy the request, then NULL is
|
|
returned.
|
|
|
|
@param Pages The number of 4 KB pages to allocate.
|
|
|
|
@return A pointer to the allocated buffer or NULL if allocation fails.
|
|
|
|
**/
|
|
VOID *
|
|
EFIAPI
|
|
AllocateReservedPages (
|
|
IN UINTN Pages
|
|
);
|
|
|
|
/**
|
|
Frees one or more 4KB pages that were previously allocated with one of the page allocation
|
|
functions in the Memory Allocation Library.
|
|
|
|
Frees the number of 4KB pages specified by Pages from the buffer specified by Buffer. Buffer
|
|
must have been allocated on a previous call to the page allocation services of the Memory
|
|
Allocation Library. If it is not possible to free allocated pages, then this function will
|
|
perform no actions.
|
|
|
|
If Buffer was not allocated with a page allocation function in the Memory Allocation Library,
|
|
then ASSERT().
|
|
If Pages is zero, then ASSERT().
|
|
|
|
@param Buffer Pointer to the buffer of pages to free.
|
|
@param Pages The number of 4 KB pages to free.
|
|
|
|
**/
|
|
VOID
|
|
EFIAPI
|
|
FreePages (
|
|
IN VOID *Buffer,
|
|
IN UINTN Pages
|
|
);
|
|
|
|
/**
|
|
Allocates one or more 4KB pages of type EfiBootServicesData at a specified alignment.
|
|
|
|
Allocates the number of 4KB pages specified by Pages of type EfiBootServicesData with an
|
|
alignment specified by Alignment. The allocated buffer is returned. If Pages is 0, then NULL is
|
|
returned. If there is not enough memory at the specified alignment remaining to satisfy the
|
|
request, then NULL is returned.
|
|
|
|
If Alignment is not a power of two and Alignment is not zero, then ASSERT().
|
|
If Pages plus EFI_SIZE_TO_PAGES (Alignment) overflows, then ASSERT().
|
|
|
|
@param Pages The number of 4 KB pages to allocate.
|
|
@param Alignment The requested alignment of the allocation. Must be a power of two.
|
|
If Alignment is zero, then byte alignment is used.
|
|
|
|
@return A pointer to the allocated buffer or NULL if allocation fails.
|
|
|
|
**/
|
|
VOID *
|
|
EFIAPI
|
|
AllocateAlignedPages (
|
|
IN UINTN Pages,
|
|
IN UINTN Alignment
|
|
);
|
|
|
|
/**
|
|
Allocates one or more 4KB pages of type EfiRuntimeServicesData at a specified alignment.
|
|
|
|
Allocates the number of 4KB pages specified by Pages of type EfiRuntimeServicesData with an
|
|
alignment specified by Alignment. The allocated buffer is returned. If Pages is 0, then NULL is
|
|
returned. If there is not enough memory at the specified alignment remaining to satisfy the
|
|
request, then NULL is returned.
|
|
|
|
If Alignment is not a power of two and Alignment is not zero, then ASSERT().
|
|
If Pages plus EFI_SIZE_TO_PAGES (Alignment) overflows, then ASSERT().
|
|
|
|
@param Pages The number of 4 KB pages to allocate.
|
|
@param Alignment The requested alignment of the allocation. Must be a power of two.
|
|
If Alignment is zero, then byte alignment is used.
|
|
|
|
@return A pointer to the allocated buffer or NULL if allocation fails.
|
|
|
|
**/
|
|
VOID *
|
|
EFIAPI
|
|
AllocateAlignedRuntimePages (
|
|
IN UINTN Pages,
|
|
IN UINTN Alignment
|
|
);
|
|
|
|
/**
|
|
Allocates one or more 4KB pages of type EfiReservedMemoryType at a specified alignment.
|
|
|
|
Allocates the number of 4KB pages specified by Pages of type EfiReservedMemoryType with an
|
|
alignment specified by Alignment. The allocated buffer is returned. If Pages is 0, then NULL is
|
|
returned. If there is not enough memory at the specified alignment remaining to satisfy the
|
|
request, then NULL is returned.
|
|
|
|
If Alignment is not a power of two and Alignment is not zero, then ASSERT().
|
|
If Pages plus EFI_SIZE_TO_PAGES (Alignment) overflows, then ASSERT().
|
|
|
|
@param Pages The number of 4 KB pages to allocate.
|
|
@param Alignment The requested alignment of the allocation. Must be a power of two.
|
|
If Alignment is zero, then byte alignment is used.
|
|
|
|
@return A pointer to the allocated buffer or NULL if allocation fails.
|
|
|
|
**/
|
|
VOID *
|
|
EFIAPI
|
|
AllocateAlignedReservedPages (
|
|
IN UINTN Pages,
|
|
IN UINTN Alignment
|
|
);
|
|
|
|
/**
|
|
Frees one or more 4KB pages that were previously allocated with one of the aligned page
|
|
allocation functions in the Memory Allocation Library.
|
|
|
|
Frees the number of 4KB pages specified by Pages from the buffer specified by Buffer. Buffer
|
|
must have been allocated on a previous call to the aligned page allocation services of the Memory
|
|
Allocation Library. If it is not possible to free allocated pages, then this function will
|
|
perform no actions.
|
|
|
|
If Buffer was not allocated with an aligned page allocation function in the Memory Allocation
|
|
Library, then ASSERT().
|
|
If Pages is zero, then ASSERT().
|
|
|
|
@param Buffer Pointer to the buffer of pages to free.
|
|
@param Pages The number of 4 KB pages to free.
|
|
|
|
**/
|
|
VOID
|
|
EFIAPI
|
|
FreeAlignedPages (
|
|
IN VOID *Buffer,
|
|
IN UINTN Pages
|
|
);
|
|
|
|
/**
|
|
Allocates a buffer of type EfiBootServicesData.
|
|
|
|
Allocates the number bytes specified by AllocationSize of type EfiBootServicesData and returns a
|
|
pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is
|
|
returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.
|
|
|
|
@param AllocationSize The number of bytes to allocate.
|
|
|
|
@return A pointer to the allocated buffer or NULL if allocation fails.
|
|
|
|
**/
|
|
VOID *
|
|
EFIAPI
|
|
AllocatePool (
|
|
IN UINTN AllocationSize
|
|
);
|
|
|
|
/**
|
|
Allocates a buffer of type EfiRuntimeServicesData.
|
|
|
|
Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData and returns
|
|
a pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is
|
|
returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.
|
|
|
|
@param AllocationSize The number of bytes to allocate.
|
|
|
|
@return A pointer to the allocated buffer or NULL if allocation fails.
|
|
|
|
**/
|
|
VOID *
|
|
EFIAPI
|
|
AllocateRuntimePool (
|
|
IN UINTN AllocationSize
|
|
);
|
|
|
|
/**
|
|
Allocates a buffer of type EfiReservedMemoryType.
|
|
|
|
Allocates the number bytes specified by AllocationSize of type EfiReservedMemoryType and returns
|
|
a pointer to the allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is
|
|
returned. If there is not enough memory remaining to satisfy the request, then NULL is returned.
|
|
|
|
@param AllocationSize The number of bytes to allocate.
|
|
|
|
@return A pointer to the allocated buffer or NULL if allocation fails.
|
|
|
|
**/
|
|
VOID *
|
|
EFIAPI
|
|
AllocateReservedPool (
|
|
IN UINTN AllocationSize
|
|
);
|
|
|
|
/**
|
|
Allocates and zeros a buffer of type EfiBootServicesData.
|
|
|
|
Allocates the number bytes specified by AllocationSize of type EfiBootServicesData, clears the
|
|
buffer with zeros, and returns a pointer to the allocated buffer. If AllocationSize is 0, then a
|
|
valid buffer of 0 size is returned. If there is not enough memory remaining to satisfy the
|
|
request, then NULL is returned.
|
|
|
|
@param AllocationSize The number of bytes to allocate and zero.
|
|
|
|
@return A pointer to the allocated buffer or NULL if allocation fails.
|
|
|
|
**/
|
|
VOID *
|
|
EFIAPI
|
|
AllocateZeroPool (
|
|
IN UINTN AllocationSize
|
|
);
|
|
|
|
/**
|
|
Allocates and zeros a buffer of type EfiRuntimeServicesData.
|
|
|
|
Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData, clears the
|
|
buffer with zeros, and returns a pointer to the allocated buffer. If AllocationSize is 0, then a
|
|
valid buffer of 0 size is returned. If there is not enough memory remaining to satisfy the
|
|
request, then NULL is returned.
|
|
|
|
@param AllocationSize The number of bytes to allocate and zero.
|
|
|
|
@return A pointer to the allocated buffer or NULL if allocation fails.
|
|
|
|
**/
|
|
VOID *
|
|
EFIAPI
|
|
AllocateRuntimeZeroPool (
|
|
IN UINTN AllocationSize
|
|
);
|
|
|
|
/**
|
|
Allocates and zeros a buffer of type EfiReservedMemoryType.
|
|
|
|
Allocates the number bytes specified by AllocationSize of type EfiReservedMemoryType, clears the
|
|
buffer with zeros, and returns a pointer to the allocated buffer. If AllocationSize is 0, then a
|
|
valid buffer of 0 size is returned. If there is not enough memory remaining to satisfy the
|
|
request, then NULL is returned.
|
|
|
|
@param AllocationSize The number of bytes to allocate and zero.
|
|
|
|
@return A pointer to the allocated buffer or NULL if allocation fails.
|
|
|
|
**/
|
|
VOID *
|
|
EFIAPI
|
|
AllocateReservedZeroPool (
|
|
IN UINTN AllocationSize
|
|
);
|
|
|
|
/**
|
|
Copies a buffer to an allocated buffer of type EfiBootServicesData.
|
|
|
|
Allocates the number bytes specified by AllocationSize of type EfiBootServicesData, copies
|
|
AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the
|
|
allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there
|
|
is not enough memory remaining to satisfy the request, then NULL is returned.
|
|
|
|
If Buffer is NULL, then ASSERT().
|
|
If AllocationSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
|
|
|
|
@param AllocationSize The number of bytes to allocate and zero.
|
|
@param Buffer The buffer to copy to the allocated buffer.
|
|
|
|
@return A pointer to the allocated buffer or NULL if allocation fails.
|
|
|
|
**/
|
|
VOID *
|
|
EFIAPI
|
|
AllocateCopyPool (
|
|
IN UINTN AllocationSize,
|
|
IN CONST VOID *Buffer
|
|
);
|
|
|
|
/**
|
|
Copies a buffer to an allocated buffer of type EfiRuntimeServicesData.
|
|
|
|
Allocates the number bytes specified by AllocationSize of type EfiRuntimeServicesData, copies
|
|
AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the
|
|
allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there
|
|
is not enough memory remaining to satisfy the request, then NULL is returned.
|
|
|
|
If Buffer is NULL, then ASSERT().
|
|
If AllocationSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
|
|
|
|
@param AllocationSize The number of bytes to allocate and zero.
|
|
@param Buffer The buffer to copy to the allocated buffer.
|
|
|
|
@return A pointer to the allocated buffer or NULL if allocation fails.
|
|
|
|
**/
|
|
VOID *
|
|
EFIAPI
|
|
AllocateRuntimeCopyPool (
|
|
IN UINTN AllocationSize,
|
|
IN CONST VOID *Buffer
|
|
);
|
|
|
|
/**
|
|
Copies a buffer to an allocated buffer of type EfiReservedMemoryType.
|
|
|
|
Allocates the number bytes specified by AllocationSize of type EfiReservedMemoryType, copies
|
|
AllocationSize bytes from Buffer to the newly allocated buffer, and returns a pointer to the
|
|
allocated buffer. If AllocationSize is 0, then a valid buffer of 0 size is returned. If there
|
|
is not enough memory remaining to satisfy the request, then NULL is returned.
|
|
|
|
If Buffer is NULL, then ASSERT().
|
|
If AllocationSize is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
|
|
|
|
@param AllocationSize The number of bytes to allocate and zero.
|
|
@param Buffer The buffer to copy to the allocated buffer.
|
|
|
|
@return A pointer to the allocated buffer or NULL if allocation fails.
|
|
|
|
**/
|
|
VOID *
|
|
EFIAPI
|
|
AllocateReservedCopyPool (
|
|
IN UINTN AllocationSize,
|
|
IN CONST VOID *Buffer
|
|
);
|
|
|
|
/**
|
|
Reallocates a buffer of type EfiBootServicesData.
|
|
|
|
Allocates and zeros the number bytes specified by NewSize from memory of type
|
|
EfiBootServicesData. If OldBuffer is not NULL, then the smaller of OldSize and
|
|
NewSize bytes are copied from OldBuffer to the newly allocated buffer, and
|
|
OldBuffer is freed. A pointer to the newly allocated buffer is returned.
|
|
If NewSize is 0, then a valid buffer of 0 size is returned. If there is not
|
|
enough memory remaining to satisfy the request, then NULL is returned.
|
|
|
|
If the allocation of the new buffer is successful and the smaller of NewSize and OldSize
|
|
is greater than (MAX_ADDRESS - OldBuffer + 1), then ASSERT().
|
|
|
|
@param OldSize The size, in bytes, of OldBuffer.
|
|
@param NewSize The size, in bytes, of the buffer to reallocate.
|
|
@param OldBuffer The buffer to copy to the allocated buffer. This is an optional
|
|
parameter that may be NULL.
|
|
|
|
@return A pointer to the allocated buffer or NULL if allocation fails.
|
|
|
|
**/
|
|
VOID *
|
|
EFIAPI
|
|
ReallocatePool (
|
|
IN UINTN OldSize,
|
|
IN UINTN NewSize,
|
|
IN VOID *OldBuffer OPTIONAL
|
|
);
|
|
|
|
/**
|
|
Reallocates a buffer of type EfiRuntimeServicesData.
|
|
|
|
Allocates and zeros the number bytes specified by NewSize from memory of type
|
|
EfiRuntimeServicesData. If OldBuffer is not NULL, then the smaller of OldSize and
|
|
NewSize bytes are copied from OldBuffer to the newly allocated buffer, and
|
|
OldBuffer is freed. A pointer to the newly allocated buffer is returned.
|
|
If NewSize is 0, then a valid buffer of 0 size is returned. If there is not
|
|
enough memory remaining to satisfy the request, then NULL is returned.
|
|
|
|
If the allocation of the new buffer is successful and the smaller of NewSize and OldSize
|
|
is greater than (MAX_ADDRESS - OldBuffer + 1), then ASSERT().
|
|
|
|
@param OldSize The size, in bytes, of OldBuffer.
|
|
@param NewSize The size, in bytes, of the buffer to reallocate.
|
|
@param OldBuffer The buffer to copy to the allocated buffer. This is an optional
|
|
parameter that may be NULL.
|
|
|
|
@return A pointer to the allocated buffer or NULL if allocation fails.
|
|
|
|
**/
|
|
VOID *
|
|
EFIAPI
|
|
ReallocateRuntimePool (
|
|
IN UINTN OldSize,
|
|
IN UINTN NewSize,
|
|
IN VOID *OldBuffer OPTIONAL
|
|
);
|
|
|
|
/**
|
|
Reallocates a buffer of type EfiReservedMemoryType.
|
|
|
|
Allocates and zeros the number bytes specified by NewSize from memory of type
|
|
EfiReservedMemoryType. If OldBuffer is not NULL, then the smaller of OldSize and
|
|
NewSize bytes are copied from OldBuffer to the newly allocated buffer, and
|
|
OldBuffer is freed. A pointer to the newly allocated buffer is returned.
|
|
If NewSize is 0, then a valid buffer of 0 size is returned. If there is not
|
|
enough memory remaining to satisfy the request, then NULL is returned.
|
|
|
|
If the allocation of the new buffer is successful and the smaller of NewSize and OldSize
|
|
is greater than (MAX_ADDRESS - OldBuffer + 1), then ASSERT().
|
|
|
|
@param OldSize The size, in bytes, of OldBuffer.
|
|
@param NewSize The size, in bytes, of the buffer to reallocate.
|
|
@param OldBuffer The buffer to copy to the allocated buffer. This is an optional
|
|
parameter that may be NULL.
|
|
|
|
@return A pointer to the allocated buffer or NULL if allocation fails.
|
|
|
|
**/
|
|
VOID *
|
|
EFIAPI
|
|
ReallocateReservedPool (
|
|
IN UINTN OldSize,
|
|
IN UINTN NewSize,
|
|
IN VOID *OldBuffer OPTIONAL
|
|
);
|
|
|
|
/**
|
|
Frees a buffer that was previously allocated with one of the pool allocation functions in the
|
|
Memory Allocation Library.
|
|
|
|
Frees the buffer specified by Buffer. Buffer must have been allocated on a previous call to the
|
|
pool allocation services of the Memory Allocation Library. If it is not possible to free pool
|
|
resources, then this function will perform no actions.
|
|
|
|
If Buffer was not allocated with a pool allocation function in the Memory Allocation Library,
|
|
then ASSERT().
|
|
|
|
@param Buffer Pointer to the buffer to free.
|
|
|
|
**/
|
|
VOID
|
|
EFIAPI
|
|
FreePool (
|
|
IN VOID *Buffer
|
|
);
|
|
|
|
#endif
|