mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
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1106 lines
36 KiB
C
1106 lines
36 KiB
C
/** @file
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Support routines for memory allocation routines based on SMM Core internal functions,
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with memory profile support.
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The PI System Management Mode Core Interface Specification only allows the use
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of EfiRuntimeServicesCode and EfiRuntimeServicesData memory types for memory
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allocations as the SMRAM space should be reserved after BDS phase. The functions
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in the Memory Allocation Library use EfiBootServicesData as the default memory
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allocation type. For this SMM specific instance of the Memory Allocation Library,
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EfiRuntimeServicesData is used as the default memory type for all allocations.
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In addition, allocation for the Reserved memory types are not supported and will
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always return NULL.
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Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include <PiSmm.h>
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#include <Library/MemoryAllocationLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/DebugLib.h>
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#include "PiSmmCoreMemoryAllocationServices.h"
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#include <Library/MemoryProfileLib.h>
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EFI_SMRAM_DESCRIPTOR *mSmmCoreMemoryAllocLibSmramRanges = NULL;
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UINTN mSmmCoreMemoryAllocLibSmramRangeCount = 0;
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/**
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Check whether the start address of buffer is within any of the SMRAM ranges.
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@param[in] Buffer The pointer to the buffer to be checked.
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@retval TRUE The buffer is in SMRAM ranges.
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@retval FALSE The buffer is out of SMRAM ranges.
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**/
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BOOLEAN
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EFIAPI
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BufferInSmram (
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IN VOID *Buffer
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)
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{
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UINTN Index;
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for (Index = 0; Index < mSmmCoreMemoryAllocLibSmramRangeCount; Index ++) {
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if (((EFI_PHYSICAL_ADDRESS) (UINTN) Buffer >= mSmmCoreMemoryAllocLibSmramRanges[Index].CpuStart) &&
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((EFI_PHYSICAL_ADDRESS) (UINTN) Buffer < (mSmmCoreMemoryAllocLibSmramRanges[Index].CpuStart + mSmmCoreMemoryAllocLibSmramRanges[Index].PhysicalSize))) {
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return TRUE;
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}
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}
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return FALSE;
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}
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/**
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Allocates one or more 4KB pages of a certain memory type.
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Allocates the number of 4KB pages of a certain memory type and returns a pointer to the allocated
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buffer. The buffer returned is aligned on a 4KB boundary. If Pages is 0, then NULL is returned.
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If there is not enough memory remaining to satisfy the request, then NULL is returned.
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@param MemoryType The type of memory to allocate.
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@param Pages The number of 4 KB pages to allocate.
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@return A pointer to the allocated buffer or NULL if allocation fails.
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**/
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VOID *
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InternalAllocatePages (
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IN EFI_MEMORY_TYPE MemoryType,
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IN UINTN Pages
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)
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{
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EFI_STATUS Status;
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EFI_PHYSICAL_ADDRESS Memory;
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if (Pages == 0) {
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return NULL;
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}
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Status = SmmAllocatePages (AllocateAnyPages, MemoryType, Pages, &Memory);
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if (EFI_ERROR(Status)) {
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return NULL;
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}
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return (VOID *) (UINTN) Memory;
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}
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/**
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Allocates one or more 4KB pages of type EfiRuntimeServicesData.
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Allocates the number of 4KB pages of type EfiRuntimeServicesData and returns a pointer to the
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allocated buffer. The buffer returned is aligned on a 4KB boundary. If Pages is 0, then NULL
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is returned. If there is not enough memory remaining to satisfy the request, then NULL is
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returned.
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@param Pages The number of 4 KB pages to allocate.
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@return A pointer to the allocated buffer or NULL if allocation fails.
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**/
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VOID *
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EFIAPI
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AllocatePages (
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IN UINTN Pages
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)
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{
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VOID *Buffer;
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Buffer = InternalAllocatePages (EfiRuntimeServicesData, Pages);
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if (Buffer != NULL) {
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MemoryProfileLibRecord (
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(PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS(0),
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MEMORY_PROFILE_ACTION_LIB_ALLOCATE_PAGES,
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EfiRuntimeServicesData,
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Buffer,
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EFI_PAGES_TO_SIZE(Pages),
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NULL
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);
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}
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return Buffer;
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}
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/**
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Allocates one or more 4KB pages of type EfiRuntimeServicesData.
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Allocates the number of 4KB pages of type EfiRuntimeServicesData and returns a pointer to the
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allocated buffer. The buffer returned is aligned on a 4KB boundary. If Pages is 0, then NULL
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is returned. If there is not enough memory remaining to satisfy the request, then NULL is
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returned.
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@param Pages The number of 4 KB pages to allocate.
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@return A pointer to the allocated buffer or NULL if allocation fails.
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**/
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VOID *
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EFIAPI
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AllocateRuntimePages (
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IN UINTN Pages
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)
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{
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VOID *Buffer;
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Buffer = InternalAllocatePages (EfiRuntimeServicesData, Pages);
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if (Buffer != NULL) {
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MemoryProfileLibRecord (
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(PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS(0),
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MEMORY_PROFILE_ACTION_LIB_ALLOCATE_RUNTIME_PAGES,
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EfiRuntimeServicesData,
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Buffer,
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EFI_PAGES_TO_SIZE(Pages),
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NULL
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);
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}
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return Buffer;
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}
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/**
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Allocates one or more 4KB pages of type EfiReservedMemoryType.
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Allocates the number of 4KB pages of type EfiReservedMemoryType and returns a pointer to the
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allocated buffer. The buffer returned is aligned on a 4KB boundary. If Pages is 0, then NULL
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is returned. If there is not enough memory remaining to satisfy the request, then NULL is
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returned.
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@param Pages The number of 4 KB pages to allocate.
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@return A pointer to the allocated buffer or NULL if allocation fails.
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**/
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VOID *
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EFIAPI
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AllocateReservedPages (
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IN UINTN Pages
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)
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{
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return NULL;
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}
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/**
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Frees one or more 4KB pages that were previously allocated with one of the page allocation
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functions in the Memory Allocation Library.
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Frees the number of 4KB pages specified by Pages from the buffer specified by Buffer. Buffer
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must have been allocated on a previous call to the page allocation services of the Memory
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Allocation Library. If it is not possible to free allocated pages, then this function will
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perform no actions.
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If Buffer was not allocated with a page allocation function in the Memory Allocation Library,
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then ASSERT().
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If Pages is zero, then ASSERT().
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@param Buffer Pointer to the buffer of pages to free.
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@param Pages The number of 4 KB pages to free.
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**/
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VOID
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EFIAPI
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FreePages (
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IN VOID *Buffer,
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IN UINTN Pages
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)
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{
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EFI_STATUS Status;
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ASSERT (Pages != 0);
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if (BufferInSmram (Buffer)) {
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//
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// When Buffer is in SMRAM range, it should be allocated by SmmAllocatePages() service.
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// So, SmmFreePages() service is used to free it.
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//
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Status = SmmFreePages ((EFI_PHYSICAL_ADDRESS) (UINTN) Buffer, Pages);
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} else {
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//
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// When Buffer is out of SMRAM range, it should be allocated by gBS->AllocatePages() service.
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// So, gBS->FreePages() service is used to free it.
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//
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Status = gBS->FreePages ((EFI_PHYSICAL_ADDRESS) (UINTN) Buffer, Pages);
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}
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ASSERT_EFI_ERROR(Status);
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}
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/**
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Allocates one or more 4KB pages of a certain memory type at a specified alignment.
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Allocates the number of 4KB pages specified by Pages of a certain memory type with an alignment
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specified by Alignment. The allocated buffer is returned. If Pages is 0, then NULL is returned.
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If there is not enough memory at the specified alignment remaining to satisfy the request, then
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NULL is returned.
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If Alignment is not a power of two and Alignment is not zero, then ASSERT().
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If Pages plus EFI_SIZE_TO_PAGES (Alignment) overflows, then ASSERT().
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@param MemoryType The type of memory to allocate.
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@param Pages The number of 4 KB pages to allocate.
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@param Alignment The requested alignment of the allocation. Must be a power of two.
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If Alignment is zero, then byte alignment is used.
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@return A pointer to the allocated buffer or NULL if allocation fails.
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**/
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VOID *
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InternalAllocateAlignedPages (
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IN EFI_MEMORY_TYPE MemoryType,
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IN UINTN Pages,
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IN UINTN Alignment
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)
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{
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EFI_STATUS Status;
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EFI_PHYSICAL_ADDRESS Memory;
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UINTN AlignedMemory;
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UINTN AlignmentMask;
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UINTN UnalignedPages;
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UINTN RealPages;
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//
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// Alignment must be a power of two or zero.
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//
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ASSERT ((Alignment & (Alignment - 1)) == 0);
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if (Pages == 0) {
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return NULL;
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}
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if (Alignment > EFI_PAGE_SIZE) {
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//
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// Calculate the total number of pages since alignment is larger than page size.
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//
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AlignmentMask = Alignment - 1;
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RealPages = Pages + EFI_SIZE_TO_PAGES (Alignment);
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//
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// Make sure that Pages plus EFI_SIZE_TO_PAGES (Alignment) does not overflow.
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//
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ASSERT (RealPages > Pages);
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Status = SmmAllocatePages (AllocateAnyPages, MemoryType, RealPages, &Memory);
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if (EFI_ERROR(Status)) {
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return NULL;
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}
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AlignedMemory = ((UINTN) Memory + AlignmentMask) & ~AlignmentMask;
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UnalignedPages = EFI_SIZE_TO_PAGES (AlignedMemory - (UINTN) Memory);
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if (UnalignedPages > 0) {
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//
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// Free first unaligned page(s).
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//
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Status = SmmFreePages (Memory, UnalignedPages);
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ASSERT_EFI_ERROR(Status);
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}
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Memory = AlignedMemory + EFI_PAGES_TO_SIZE (Pages);
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UnalignedPages = RealPages - Pages - UnalignedPages;
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if (UnalignedPages > 0) {
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//
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// Free last unaligned page(s).
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//
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Status = SmmFreePages (Memory, UnalignedPages);
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ASSERT_EFI_ERROR(Status);
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}
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} else {
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//
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// Do not over-allocate pages in this case.
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//
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Status = SmmAllocatePages (AllocateAnyPages, MemoryType, Pages, &Memory);
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if (EFI_ERROR(Status)) {
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return NULL;
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}
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AlignedMemory = (UINTN) Memory;
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}
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return (VOID *) AlignedMemory;
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}
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/**
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Allocates one or more 4KB pages of type EfiRuntimeServicesData at a specified alignment.
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Allocates the number of 4KB pages specified by Pages of type EfiRuntimeServicesData with an
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alignment specified by Alignment. The allocated buffer is returned. If Pages is 0, then NULL is
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returned. If there is not enough memory at the specified alignment remaining to satisfy the
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request, then NULL is returned.
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|
|
|
If Alignment is not a power of two and Alignment is not zero, then ASSERT().
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If Pages plus EFI_SIZE_TO_PAGES (Alignment) overflows, then ASSERT().
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@param Pages The number of 4 KB pages to allocate.
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@param Alignment The requested alignment of the allocation. Must be a power of two.
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If Alignment is zero, then byte alignment is used.
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@return A pointer to the allocated buffer or NULL if allocation fails.
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**/
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VOID *
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EFIAPI
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AllocateAlignedPages (
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IN UINTN Pages,
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IN UINTN Alignment
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)
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{
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VOID *Buffer;
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Buffer = InternalAllocateAlignedPages (EfiRuntimeServicesData, Pages, Alignment);
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if (Buffer != NULL) {
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MemoryProfileLibRecord (
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(PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS(0),
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MEMORY_PROFILE_ACTION_LIB_ALLOCATE_ALIGNED_PAGES,
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EfiRuntimeServicesData,
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Buffer,
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EFI_PAGES_TO_SIZE(Pages),
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NULL
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);
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}
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return Buffer;
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}
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/**
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Allocates one or more 4KB pages of type EfiRuntimeServicesData at a specified alignment.
|
|
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|
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.
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@param Alignment The requested alignment of the allocation. Must be a power of two.
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If Alignment is zero, then byte alignment is used.
|
|
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@return A pointer to the allocated buffer or NULL if allocation fails.
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|
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**/
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VOID *
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EFIAPI
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AllocateAlignedRuntimePages (
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IN UINTN Pages,
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IN UINTN Alignment
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)
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{
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VOID *Buffer;
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Buffer = InternalAllocateAlignedPages (EfiRuntimeServicesData, Pages, Alignment);
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if (Buffer != NULL) {
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MemoryProfileLibRecord (
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(PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS(0),
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MEMORY_PROFILE_ACTION_LIB_ALLOCATE_ALIGNED_RUNTIME_PAGES,
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EfiRuntimeServicesData,
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Buffer,
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EFI_PAGES_TO_SIZE(Pages),
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NULL
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);
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}
|
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return Buffer;
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}
|
|
|
|
/**
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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 (
|
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IN UINTN Pages,
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IN UINTN Alignment
|
|
)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
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
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
|
|
ASSERT (Pages != 0);
|
|
if (BufferInSmram (Buffer)) {
|
|
//
|
|
// When Buffer is in SMRAM range, it should be allocated by SmmAllocatePages() service.
|
|
// So, SmmFreePages() service is used to free it.
|
|
//
|
|
Status = SmmFreePages ((EFI_PHYSICAL_ADDRESS) (UINTN) Buffer, Pages);
|
|
} else {
|
|
//
|
|
// When Buffer is out of SMRAM range, it should be allocated by gBS->AllocatePages() service.
|
|
// So, gBS->FreePages() service is used to free it.
|
|
//
|
|
Status = gBS->FreePages ((EFI_PHYSICAL_ADDRESS) (UINTN) Buffer, Pages);
|
|
}
|
|
ASSERT_EFI_ERROR(Status);
|
|
}
|
|
|
|
/**
|
|
Allocates a buffer of a certain pool type.
|
|
|
|
Allocates the number bytes specified by AllocationSize of a certain pool type 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 MemoryType The type of memory to allocate.
|
|
@param AllocationSize The number of bytes to allocate.
|
|
|
|
@return A pointer to the allocated buffer or NULL if allocation fails.
|
|
|
|
**/
|
|
VOID *
|
|
InternalAllocatePool (
|
|
IN EFI_MEMORY_TYPE MemoryType,
|
|
IN UINTN AllocationSize
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
VOID *Memory;
|
|
|
|
Memory = NULL;
|
|
|
|
Status = SmmAllocatePool (MemoryType, AllocationSize, &Memory);
|
|
if (EFI_ERROR(Status)) {
|
|
Memory = NULL;
|
|
}
|
|
return Memory;
|
|
}
|
|
|
|
/**
|
|
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
|
|
AllocatePool (
|
|
IN UINTN AllocationSize
|
|
)
|
|
{
|
|
VOID *Buffer;
|
|
|
|
Buffer = InternalAllocatePool (EfiRuntimeServicesData, AllocationSize);
|
|
if (Buffer != NULL) {
|
|
MemoryProfileLibRecord (
|
|
(PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS(0),
|
|
MEMORY_PROFILE_ACTION_LIB_ALLOCATE_POOL,
|
|
EfiRuntimeServicesData,
|
|
Buffer,
|
|
AllocationSize,
|
|
NULL
|
|
);
|
|
}
|
|
return Buffer;
|
|
}
|
|
|
|
/**
|
|
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
|
|
)
|
|
{
|
|
VOID *Buffer;
|
|
|
|
Buffer = InternalAllocatePool (EfiRuntimeServicesData, AllocationSize);
|
|
if (Buffer != NULL) {
|
|
MemoryProfileLibRecord (
|
|
(PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS(0),
|
|
MEMORY_PROFILE_ACTION_LIB_ALLOCATE_RUNTIME_POOL,
|
|
EfiRuntimeServicesData,
|
|
Buffer,
|
|
AllocationSize,
|
|
NULL
|
|
);
|
|
}
|
|
return Buffer;
|
|
}
|
|
|
|
/**
|
|
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
|
|
)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
Allocates and zeros a buffer of a certain pool type.
|
|
|
|
Allocates the number bytes specified by AllocationSize of a certain pool type, 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 PoolType The type of memory to allocate.
|
|
@param AllocationSize The number of bytes to allocate and zero.
|
|
|
|
@return A pointer to the allocated buffer or NULL if allocation fails.
|
|
|
|
**/
|
|
VOID *
|
|
InternalAllocateZeroPool(
|
|
IN EFI_MEMORY_TYPE PoolType,
|
|
IN UINTN AllocationSize
|
|
)
|
|
{
|
|
VOID *Memory;
|
|
|
|
Memory = InternalAllocatePool (PoolType, AllocationSize);
|
|
if (Memory != NULL) {
|
|
Memory = ZeroMem (Memory, AllocationSize);
|
|
}
|
|
return Memory;
|
|
}
|
|
|
|
/**
|
|
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
|
|
AllocateZeroPool(
|
|
IN UINTN AllocationSize
|
|
)
|
|
{
|
|
VOID *Buffer;
|
|
|
|
Buffer = InternalAllocateZeroPool(EfiRuntimeServicesData, AllocationSize);
|
|
if (Buffer != NULL) {
|
|
MemoryProfileLibRecord (
|
|
(PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS(0),
|
|
MEMORY_PROFILE_ACTION_LIB_ALLOCATE_ZERO_POOL,
|
|
EfiRuntimeServicesData,
|
|
Buffer,
|
|
AllocationSize,
|
|
NULL
|
|
);
|
|
}
|
|
return Buffer;
|
|
}
|
|
|
|
/**
|
|
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
|
|
)
|
|
{
|
|
VOID *Buffer;
|
|
|
|
Buffer = InternalAllocateZeroPool(EfiRuntimeServicesData, AllocationSize);
|
|
if (Buffer != NULL) {
|
|
MemoryProfileLibRecord (
|
|
(PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS(0),
|
|
MEMORY_PROFILE_ACTION_LIB_ALLOCATE_RUNTIME_ZERO_POOL,
|
|
EfiRuntimeServicesData,
|
|
Buffer,
|
|
AllocationSize,
|
|
NULL
|
|
);
|
|
}
|
|
return Buffer;
|
|
}
|
|
|
|
/**
|
|
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
|
|
)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
Copies a buffer to an allocated buffer of a certain pool type.
|
|
|
|
Allocates the number bytes specified by AllocationSize of a certain pool type, 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 PoolType The type of pool to allocate.
|
|
@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 *
|
|
InternalAllocateCopyPool(
|
|
IN EFI_MEMORY_TYPE PoolType,
|
|
IN UINTN AllocationSize,
|
|
IN CONST VOID *Buffer
|
|
)
|
|
{
|
|
VOID *Memory;
|
|
|
|
ASSERT (Buffer != NULL);
|
|
ASSERT (AllocationSize <= (MAX_ADDRESS - (UINTN) Buffer + 1));
|
|
|
|
Memory = InternalAllocatePool (PoolType, AllocationSize);
|
|
if (Memory != NULL) {
|
|
Memory = CopyMem(Memory, Buffer, AllocationSize);
|
|
}
|
|
return Memory;
|
|
}
|
|
|
|
/**
|
|
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
|
|
AllocateCopyPool(
|
|
IN UINTN AllocationSize,
|
|
IN CONST VOID *Buffer
|
|
)
|
|
{
|
|
VOID *NewBuffer;
|
|
|
|
NewBuffer = InternalAllocateCopyPool(EfiRuntimeServicesData, AllocationSize, Buffer);
|
|
if (NewBuffer != NULL) {
|
|
MemoryProfileLibRecord (
|
|
(PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS(0),
|
|
MEMORY_PROFILE_ACTION_LIB_ALLOCATE_COPY_POOL,
|
|
EfiRuntimeServicesData,
|
|
NewBuffer,
|
|
AllocationSize,
|
|
NULL
|
|
);
|
|
}
|
|
return NewBuffer;
|
|
}
|
|
|
|
/**
|
|
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
|
|
)
|
|
{
|
|
VOID *NewBuffer;
|
|
|
|
NewBuffer = InternalAllocateCopyPool(EfiRuntimeServicesData, AllocationSize, Buffer);
|
|
if (NewBuffer != NULL) {
|
|
MemoryProfileLibRecord (
|
|
(PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS(0),
|
|
MEMORY_PROFILE_ACTION_LIB_ALLOCATE_RUNTIME_COPY_POOL,
|
|
EfiRuntimeServicesData,
|
|
NewBuffer,
|
|
AllocationSize,
|
|
NULL
|
|
);
|
|
}
|
|
return NewBuffer;
|
|
}
|
|
|
|
/**
|
|
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
|
|
)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
Reallocates a buffer of a specified memory type.
|
|
|
|
Allocates and zeros the number bytes specified by NewSize from memory of the type
|
|
specified by PoolType. 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 PoolType The type of pool to allocate.
|
|
@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 *
|
|
InternalReallocatePool (
|
|
IN EFI_MEMORY_TYPE PoolType,
|
|
IN UINTN OldSize,
|
|
IN UINTN NewSize,
|
|
IN VOID *OldBuffer OPTIONAL
|
|
)
|
|
{
|
|
VOID *NewBuffer;
|
|
|
|
NewBuffer = InternalAllocateZeroPool(PoolType, NewSize);
|
|
if (NewBuffer != NULL && OldBuffer != NULL) {
|
|
CopyMem(NewBuffer, OldBuffer, MIN (OldSize, NewSize));
|
|
FreePool(OldBuffer);
|
|
}
|
|
return NewBuffer;
|
|
}
|
|
|
|
/**
|
|
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
|
|
ReallocatePool (
|
|
IN UINTN OldSize,
|
|
IN UINTN NewSize,
|
|
IN VOID *OldBuffer OPTIONAL
|
|
)
|
|
{
|
|
VOID *Buffer;
|
|
|
|
Buffer = InternalReallocatePool (EfiRuntimeServicesData, OldSize, NewSize, OldBuffer);
|
|
if (Buffer != NULL) {
|
|
MemoryProfileLibRecord (
|
|
(PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS(0),
|
|
MEMORY_PROFILE_ACTION_LIB_REALLOCATE_POOL,
|
|
EfiRuntimeServicesData,
|
|
Buffer,
|
|
NewSize,
|
|
NULL
|
|
);
|
|
}
|
|
return Buffer;
|
|
}
|
|
|
|
/**
|
|
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
|
|
)
|
|
{
|
|
VOID *Buffer;
|
|
|
|
Buffer = InternalReallocatePool (EfiRuntimeServicesData, OldSize, NewSize, OldBuffer);
|
|
if (Buffer != NULL) {
|
|
MemoryProfileLibRecord (
|
|
(PHYSICAL_ADDRESS) (UINTN) RETURN_ADDRESS(0),
|
|
MEMORY_PROFILE_ACTION_LIB_REALLOCATE_RUNTIME_POOL,
|
|
EfiRuntimeServicesData,
|
|
Buffer,
|
|
NewSize,
|
|
NULL
|
|
);
|
|
}
|
|
return Buffer;
|
|
}
|
|
|
|
/**
|
|
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
|
|
)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
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
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
|
|
if (BufferInSmram (Buffer)) {
|
|
//
|
|
// When Buffer is in SMRAM range, it should be allocated by SmmAllocatePool() service.
|
|
// So, SmmFreePool() service is used to free it.
|
|
//
|
|
Status = SmmFreePool(Buffer);
|
|
} else {
|
|
//
|
|
// When Buffer is out of SMRAM range, it should be allocated by gBS->AllocatePool() service.
|
|
// So, gBS->FreePool() service is used to free it.
|
|
//
|
|
Status = gBS->FreePool(Buffer);
|
|
}
|
|
ASSERT_EFI_ERROR(Status);
|
|
}
|
|
|
|
/**
|
|
The constructor function calls SmmInitializeMemoryServices to initialize memory in SMRAM.
|
|
|
|
@param ImageHandle The firmware allocated handle for the EFI image.
|
|
@param SystemTable A pointer to the EFI System Table.
|
|
|
|
@retval EFI_SUCCESS The constructor always returns EFI_SUCCESS.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
EFIAPI
|
|
PiSmmCoreMemoryAllocationLibConstructor (
|
|
IN EFI_HANDLE ImageHandle,
|
|
IN EFI_SYSTEM_TABLE *SystemTable
|
|
)
|
|
{
|
|
EFI_STATUS Status;
|
|
SMM_CORE_PRIVATE_DATA *SmmCorePrivate;
|
|
UINTN Size;
|
|
VOID *BootServicesData;
|
|
|
|
SmmCorePrivate = (SMM_CORE_PRIVATE_DATA *)ImageHandle;
|
|
|
|
//
|
|
// The FreePool()/FreePages() will need use SmramRanges data to know whether
|
|
// the buffer to free is in SMRAM range or not. And there may be FreePool()/
|
|
// FreePages() indrectly during calling SmmInitializeMemoryServices(), but
|
|
// no SMRAM could be allocated before calling SmmInitializeMemoryServices(),
|
|
// so temporarily use BootServicesData to hold the SmramRanges data.
|
|
//
|
|
mSmmCoreMemoryAllocLibSmramRangeCount = SmmCorePrivate->SmramRangeCount;
|
|
Size = mSmmCoreMemoryAllocLibSmramRangeCount * sizeof (EFI_SMRAM_DESCRIPTOR);
|
|
Status = gBS->AllocatePool (EfiBootServicesData, Size, (VOID **) &mSmmCoreMemoryAllocLibSmramRanges);
|
|
ASSERT_EFI_ERROR(Status);
|
|
ASSERT (mSmmCoreMemoryAllocLibSmramRanges != NULL);
|
|
CopyMem(mSmmCoreMemoryAllocLibSmramRanges, SmmCorePrivate->SmramRanges, Size);
|
|
|
|
//
|
|
// Initialize memory service using free SMRAM
|
|
//
|
|
SmmInitializeMemoryServices (SmmCorePrivate->SmramRangeCount, SmmCorePrivate->SmramRanges);
|
|
|
|
//
|
|
// Move the SmramRanges data from BootServicesData to SMRAM.
|
|
//
|
|
BootServicesData = mSmmCoreMemoryAllocLibSmramRanges;
|
|
mSmmCoreMemoryAllocLibSmramRanges = (EFI_SMRAM_DESCRIPTOR *) AllocateCopyPool(Size, (VOID *) BootServicesData);
|
|
ASSERT (mSmmCoreMemoryAllocLibSmramRanges != NULL);
|
|
|
|
//
|
|
// Free the temporarily used BootServicesData.
|
|
//
|
|
Status = gBS->FreePool(BootServicesData);
|
|
ASSERT_EFI_ERROR(Status);
|
|
|
|
return EFI_SUCCESS;
|
|
}
|