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StandaloneMmPkg/MemoryAllocationLib: Add MM memory allocation library.

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This patch implements management mode memory allocation services.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Supreeth Venkatesh <supreeth.venkatesh@arm.com>
Reviewed-by: Achin Gupta <achin.gupta@arm.com>
Reviewed-by: Jiewen Yao <Jiewen.yao@intel.com>
Signed-off-by: Sughosh Ganu <sughosh.ganu@arm.com>
This commit is contained in:
Supreeth Venkatesh 2018-07-13 23:05:24 +08:00 committed by Jiewen Yao
parent 880086a2b5
commit 2c868eef73
5 changed files with 1190 additions and 0 deletions
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133
StandaloneMmPkg/Include/Guid/MmCoreData.h Normal file
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/** @file
MM Core data.
Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2018, ARM Limited. All rights reserved.<BR>
This program and the accompanying materials are licensed and made available under
the terms and conditions of the BSD License that accompanies this distribution.
The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php.
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#ifndef __MM_CORE_DATA_H__
#define __MM_CORE_DATA_H__
#define MM_CORE_DATA_HOB_GUID \
{ 0xa160bf99, 0x2aa4, 0x4d7d, { 0x99, 0x93, 0x89, 0x9c, 0xb1, 0x2d, 0xf3, 0x76 }}
extern EFI_GUID gMmCoreDataHobGuid;
typedef struct {
//
// Address pointer to MM_CORE_PRIVATE_DATA
//
EFI_PHYSICAL_ADDRESS Address;
} MM_CORE_DATA_HOB_DATA;
///
/// Define values for the communications buffer used when gEfiEventDxeDispatchGuid is
/// event signaled. This event is signaled by the DXE Core each time the DXE Core
/// dispatcher has completed its work. When this event is signaled, the MM Core
/// if notified, so the MM Core can dispatch MM drivers. If COMM_BUFFER_MM_DISPATCH_ERROR
/// is returned in the communication buffer, then an error occurred dispatching MM
/// Drivers. If COMM_BUFFER_MM_DISPATCH_SUCCESS is returned, then the MM Core
/// dispatched all the drivers it could. If COMM_BUFFER_MM_DISPATCH_RESTART is
/// returned, then the MM Core just dispatched the MM Driver that registered
/// the MM Entry Point enabling the use of MM Mode. In this case, the MM Core
/// should be notified again to dispatch more MM Drivers using MM Mode.
///
#define COMM_BUFFER_MM_DISPATCH_ERROR 0x00
#define COMM_BUFFER_MM_DISPATCH_SUCCESS 0x01
#define COMM_BUFFER_MM_DISPATCH_RESTART 0x02
///
/// Signature for the private structure shared between the MM IPL and the MM Core
///
#define MM_CORE_PRIVATE_DATA_SIGNATURE SIGNATURE_32 ('m', 'm', 'i', 'c')
///
/// Private structure that is used to share information between the MM IPL and
/// the MM Core. This structure is allocated from memory of type EfiRuntimeServicesData.
/// Since runtime memory types are converted to available memory when a legacy boot
/// is performed, the MM Core must not access any fields of this structure if a legacy
/// boot is performed. As a result, the MM IPL must create an event notification
/// for the Legacy Boot event and notify the MM Core that a legacy boot is being
/// performed. The MM Core can then use this information to filter accesses to
/// thos structure.
///
typedef struct {
UINT64 Signature;
///
/// The number of MMRAM ranges passed from the MM IPL to the MM Core. The MM
/// Core uses these ranges of MMRAM to initialize the MM Core memory manager.
///
UINT64 MmramRangeCount;
///
/// A table of MMRAM ranges passed from the MM IPL to the MM Core. The MM
/// Core uses these ranges of MMRAM to initialize the MM Core memory manager.
///
EFI_PHYSICAL_ADDRESS MmramRanges;
///
/// The MM Foundation Entry Point. The MM Core fills in this field when the
/// MM Core is initialized. The MM IPL is responsbile for registering this entry
/// point with the MM Configuration Protocol. The MM Configuration Protocol may
/// not be available at the time the MM IPL and MM Core are started, so the MM IPL
/// sets up a protocol notification on the MM Configuration Protocol and registers
/// the MM Foundation Entry Point as soon as the MM Configuration Protocol is
/// available.
///
EFI_PHYSICAL_ADDRESS MmEntryPoint;
///
/// Boolean flag set to TRUE while an MMI is being processed by the MM Core.
///
BOOLEAN MmEntryPointRegistered;
///
/// Boolean flag set to TRUE while an MMI is being processed by the MM Core.
///
BOOLEAN InMm;
///
/// This field is set by the MM Core then the MM Core is initialized. This field is
/// used by the MM Base 2 Protocol and MM Communication Protocol implementations in
/// the MM IPL.
///
EFI_PHYSICAL_ADDRESS Mmst;
///
/// This field is used by the MM Communicatioon Protocol to pass a buffer into
/// a software MMI handler and for the software MMI handler to pass a buffer back to
/// the caller of the MM Communication Protocol.
///
EFI_PHYSICAL_ADDRESS CommunicationBuffer;
///
/// This field is used by the MM Communicatioon Protocol to pass the size of a buffer,
/// in bytes, into a software MMI handler and for the software MMI handler to pass the
/// size, in bytes, of a buffer back to the caller of the MM Communication Protocol.
///
UINT64 BufferSize;
///
/// This field is used by the MM Communication Protocol to pass the return status from
/// a software MMI handler back to the caller of the MM Communication Protocol.
///
UINT64 ReturnStatus;
EFI_PHYSICAL_ADDRESS MmCoreImageBase;
UINT64 MmCoreImageSize;
EFI_PHYSICAL_ADDRESS MmCoreEntryPoint;
EFI_PHYSICAL_ADDRESS StandaloneBfvAddress;
} MM_CORE_PRIVATE_DATA;
#endif

62
StandaloneMmPkg/Include/Guid/MmramMemoryReserve.h Normal file
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/** @file
Definition of GUIDed HOB for reserving MMRAM regions.
This file defines:
* the GUID used to identify the GUID HOB for reserving MMRAM regions.
* the data structure of MMRAM descriptor to describe MMRAM candidate regions
* values of state of MMRAM candidate regions
* the GUID specific data structure of HOB for reserving MMRAM regions.
This GUIDed HOB can be used to convey the existence of the T-SEG reservation and H-SEG usage
Copyright (c) 2007 - 2010, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2016 - 2018, ARM Limited. All rights reserved.<BR>
This program and the accompanying materials are licensed and made available under
the terms and conditions of the BSD License that accompanies this distribution.
The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php.
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
@par Revision Reference:
GUIDs defined in MmCis spec version 0.9.
**/
#ifndef _EFI_MM_PEI_MMRAM_MEMORY_RESERVE_H_
#define _EFI_MM_PEI_MMRAM_MEMORY_RESERVE_H_
#define EFI_MM_PEI_MMRAM_MEMORY_RESERVE \
{ \
0x0703f912, 0xbf8d, 0x4e2a, {0xbe, 0x07, 0xab, 0x27, 0x25, 0x25, 0xc5, 0x92 } \
}
/**
* GUID specific data structure of HOB for reserving MMRAM regions.
*
* Inconsistent with specification here:
* EFI_HOB_MMRAM_DESCRIPTOR_BLOCK has been changed to EFI_MMRAM_HOB_DESCRIPTOR_BLOCK.
* This inconsistency is kept in code in order for backward compatibility.
**/
typedef struct {
///
/// Designates the number of possible regions in the system
/// that can be usable for MMRAM.
///
/// Inconsistent with specification here:
/// In Framework MM CIS 0.91 specification, it defines the field type as UINTN.
/// However, HOBs are supposed to be CPU neutral, so UINT32 should be used instead.
///
UINT32 NumberOfMmReservedRegions;
///
/// Used throughout this protocol to describe the candidate
/// regions for MMRAM that are supported by this platform.
///
EFI_MMRAM_DESCRIPTOR Descriptor[1];
} EFI_MMRAM_HOB_DESCRIPTOR_BLOCK;
extern EFI_GUID gEfiMmPeiSmramMemoryReserveGuid;
#endif

908
StandaloneMmPkg/Library/StandaloneMmCoreMemoryAllocationLib/StandaloneMmCoreMemoryAllocationLib.c Normal file
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/** @file
Support routines for memory allocation routines based on Standalone MM Core internal functions.
Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2016 - 2018, ARM Limited. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include <PiMm.h>
#include <Guid/MmramMemoryReserve.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/DebugLib.h>
#include <Library/HobLib.h>
#include "StandaloneMmCoreMemoryAllocationServices.h"
EFI_MM_SYSTEM_TABLE *gMmst = NULL;
/**
Allocates one or more 4KB pages of a certain memory type.
Allocates the number of 4KB pages of a certain memory type 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 MemoryType The type of memory to allocate.
@param Pages The number of 4 KB pages to allocate.
@return A pointer to the allocated buffer or NULL if allocation fails.
**/
VOID *
InternalAllocatePages (
IN EFI_MEMORY_TYPE MemoryType,
IN UINTN Pages
)
{
EFI_STATUS Status;
EFI_PHYSICAL_ADDRESS Memory;
if (Pages == 0) {
return NULL;
}
Status = gMmst->MmAllocatePages (AllocateAnyPages, MemoryType, Pages, &Memory);
if (EFI_ERROR (Status)) {
return NULL;
}
return (VOID *) (UINTN) Memory;
}
/**
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
)
{
return InternalAllocatePages (EfiRuntimeServicesData, 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
)
{
return InternalAllocatePages (EfiRuntimeServicesData, 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
)
{
return NULL;
}
/**
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
)
{
EFI_STATUS Status;
ASSERT (Pages != 0);
Status = gMmst->MmFreePages ((EFI_PHYSICAL_ADDRESS) (UINTN) Buffer, Pages);
ASSERT_EFI_ERROR (Status);
}
/**
Allocates one or more 4KB pages of a certain memory type at a specified alignment.
Allocates the number of 4KB pages specified by Pages of a certain memory type 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 MemoryType The type of memory to allocate.
@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 *
InternalAllocateAlignedPages (
IN EFI_MEMORY_TYPE MemoryType,
IN UINTN Pages,
IN UINTN Alignment
)
{
EFI_STATUS Status;
EFI_PHYSICAL_ADDRESS Memory;
UINTN AlignedMemory;
UINTN AlignmentMask;
UINTN UnalignedPages;
UINTN RealPages;
//
// Alignment must be a power of two or zero.
//
ASSERT ((Alignment & (Alignment - 1)) == 0);
if (Pages == 0) {
return NULL;
}
if (Alignment > EFI_PAGE_SIZE) {
//
// Calculate the total number of pages since alignment is larger than page size.
//
AlignmentMask = Alignment - 1;
RealPages = Pages + EFI_SIZE_TO_PAGES (Alignment);
//
// Make sure that Pages plus EFI_SIZE_TO_PAGES (Alignment) does not overflow.
//
ASSERT (RealPages > Pages);
Status = gMmst->MmAllocatePages (AllocateAnyPages, MemoryType, RealPages, &Memory);
if (EFI_ERROR (Status)) {
return NULL;
}
AlignedMemory = ((UINTN) Memory + AlignmentMask) & ~AlignmentMask;
UnalignedPages = EFI_SIZE_TO_PAGES (AlignedMemory - (UINTN) Memory);
if (UnalignedPages > 0) {
//
// Free first unaligned page(s).
//
Status = gMmst->MmFreePages (Memory, UnalignedPages);
ASSERT_EFI_ERROR (Status);
}
Memory = (EFI_PHYSICAL_ADDRESS) (AlignedMemory + EFI_PAGES_TO_SIZE (Pages));
UnalignedPages = RealPages - Pages - UnalignedPages;
if (UnalignedPages > 0) {
//
// Free last unaligned page(s).
//
Status = gMmst->MmFreePages (Memory, UnalignedPages);
ASSERT_EFI_ERROR (Status);
}
} else {
//
// Do not over-allocate pages in this case.
//
Status = gMmst->MmAllocatePages (AllocateAnyPages, MemoryType, Pages, &Memory);
if (EFI_ERROR (Status)) {
return NULL;
}
AlignedMemory = (UINTN) Memory;
}
return (VOID *) AlignedMemory;
}
/**
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
)
{
return InternalAllocateAlignedPages (EfiRuntimeServicesData, Pages, 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
)
{
return InternalAllocateAlignedPages (EfiRuntimeServicesData, Pages, 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
)
{
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);
Status = gMmst->MmFreePages ((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 = gMmst->MmAllocatePool (MemoryType, AllocationSize, &Memory);
if (EFI_ERROR (Status)) {
Memory = NULL;
}
return Memory;
}
/**
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
)
{
return InternalAllocatePool (EfiRuntimeServicesData, 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
)
{
return InternalAllocatePool (EfiRuntimeServicesData, 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
)
{
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 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
)
{
return InternalAllocateZeroPool (EfiRuntimeServicesData, 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
)
{
return InternalAllocateZeroPool (EfiRuntimeServicesData, 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
)
{
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 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
)
{
return InternalAllocateCopyPool (EfiRuntimeServicesData, AllocationSize, 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
)
{
return InternalAllocateCopyPool (EfiRuntimeServicesData, AllocationSize, 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
)
{
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 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
)
{
return InternalReallocatePool (EfiRuntimeServicesData, OldSize, NewSize, OldBuffer);
}
/**
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
)
{
return InternalReallocatePool (EfiRuntimeServicesData, OldSize, NewSize, OldBuffer);
}
/**
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;
Status = gMmst->MmFreePool (Buffer);
ASSERT_EFI_ERROR (Status);
}
/**
The constructor function calls MmInitializeMemoryServices to initialize
memory in MMRAM and caches EFI_MM_SYSTEM_TABLE pointer.
@param ImageHandle The firmware allocated handle for the EFI image.
@param SystemTable A pointer to the Management mode System Table.
@retval EFI_SUCCESS The constructor always returns EFI_SUCCESS.
**/
EFI_STATUS
EFIAPI
MemoryAllocationLibConstructor (
IN EFI_HANDLE ImageHandle,
IN EFI_MM_SYSTEM_TABLE *MmSystemTable
)
{
MM_CORE_PRIVATE_DATA *MmCorePrivate;
EFI_HOB_GUID_TYPE *GuidHob;
MM_CORE_DATA_HOB_DATA *DataInHob;
VOID *HobStart;
EFI_MMRAM_HOB_DESCRIPTOR_BLOCK *MmramRangesHobData;
EFI_MMRAM_DESCRIPTOR *MmramRanges;
UINT32 MmramRangeCount;
EFI_HOB_GUID_TYPE *MmramRangesHob;
HobStart = GetHobList ();
DEBUG ((DEBUG_INFO, "StandaloneMmCoreMemoryAllocationLibConstructor - 0x%x\n", HobStart));
//
// Extract MM Core Private context from the Hob. If absent search for
// a Hob containing the MMRAM ranges
//
GuidHob = GetNextGuidHob (&gMmCoreDataHobGuid, HobStart);
if (GuidHob == NULL) {
MmramRangesHob = GetNextGuidHob (&gEfiMmPeiMmramMemoryReserveGuid, HobStart);
if (MmramRangesHob == NULL) {
return EFI_UNSUPPORTED;
}
MmramRangesHobData = GET_GUID_HOB_DATA (MmramRangesHob);
if (MmramRangesHobData == NULL) {
return EFI_UNSUPPORTED;
}
MmramRanges = MmramRangesHobData->Descriptor;
if (MmramRanges == NULL) {
return EFI_UNSUPPORTED;
}
MmramRangeCount = MmramRangesHobData->NumberOfMmReservedRegions;
if (MmramRanges == NULL) {
return EFI_UNSUPPORTED;
}
} else {
DataInHob = GET_GUID_HOB_DATA (GuidHob);
MmCorePrivate = (MM_CORE_PRIVATE_DATA *)(UINTN)DataInHob->Address;
MmramRanges = (EFI_MMRAM_DESCRIPTOR *)(UINTN)MmCorePrivate->MmramRanges;
MmramRangeCount = MmCorePrivate->MmramRangeCount;
}
{
UINTN Index;
DEBUG ((DEBUG_INFO, "MmramRangeCount - 0x%x\n", MmramRangeCount));
for (Index = 0; Index < MmramRangeCount; Index++) {
DEBUG ((DEBUG_INFO, "MmramRanges[%d]: 0x%016lx - 0x%016lx\n",
Index, MmramRanges[Index].CpuStart, MmramRanges[Index].PhysicalSize));
}
}
//
// Initialize memory service using free MMRAM
//
DEBUG ((DEBUG_INFO, "MmInitializeMemoryServices\n"));
MmInitializeMemoryServices ((UINTN)MmramRangeCount, (VOID *)(UINTN)MmramRanges);
// Initialize MM Services Table
gMmst = MmSystemTable;
return EFI_SUCCESS;
}

49
StandaloneMmPkg/Library/StandaloneMmCoreMemoryAllocationLib/StandaloneMmCoreMemoryAllocationLib.inf Normal file
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@ -0,0 +1,49 @@
## @file
# Memory Allocation Library instance dedicated to MM Core.
# The implementation borrows the MM Core Memory Allocation services as the primitive
# for memory allocation instead of using MM System Table servces in an indirect way.
# It is assumed that this library instance must be linked with MM Core in this package.
#
# Copyright (c) 2010 - 2015, Intel Corporation. All rights reserved.<BR>
# Copyright (c) 2016 - 2018, ARM Limited. All rights reserved.<BR>
#
# This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
# which accompanies this distribution. The full text of the license may be found at
# http://opensource.org/licenses/bsd-license.php
# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
#
##
[Defines]
INF_VERSION = 0x0001001A
BASE_NAME = MemoryAllocationLib
FILE_GUID = DCDCBE1D-E760-4E1D-85B4-96E3F0439C41
MODULE_TYPE = MM_CORE_STANDALONE
VERSION_STRING = 1.0
PI_SPECIFICATION_VERSION = 0x00010032
LIBRARY_CLASS = MemoryAllocationLib|MM_CORE_STANDALONE
CONSTRUCTOR = MemoryAllocationLibConstructor
#
# The following information is for reference only and not required by the build tools.
#
# VALID_ARCHITECTURES = IA32 X64
#
[Sources]
StandaloneMmCoreMemoryAllocationLib.c
StandaloneMmCoreMemoryAllocationServices.h
[Packages]
MdePkg/MdePkg.dec
StandaloneMmPkg/StandaloneMmPkg.dec
[LibraryClasses]
BaseMemoryLib
DebugLib
HobLib
[Guids]
gEfiMmPeiMmramMemoryReserveGuid

38
StandaloneMmPkg/Library/StandaloneMmCoreMemoryAllocationLib/StandaloneMmCoreMemoryAllocationServices.h Normal file
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@ -0,0 +1,38 @@
/** @file
Contains function prototypes for Memory Services in the MM Core.
This header file borrows the StandaloneMmCore Memory Allocation services as the primitive
for memory allocation.
Copyright (c) 2008 - 2015, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2016 - 2018, ARM Limited. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#ifndef _PI_MM_CORE_MEMORY_ALLOCATION_SERVICES_H_
#define _PI_MM_CORE_MEMORY_ALLOCATION_SERVICES_H_
#include <Guid/MmCoreData.h>
/**
Called to initialize the memory service.
@param MmramRangeCount Number of MMRAM Regions
@param MmramRanges Pointer to MMRAM Descriptors
**/
VOID
MmInitializeMemoryServices (
IN UINTN MmramRangeCount,
IN EFI_MMRAM_DESCRIPTOR *MmramRanges
);
#endif