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audk/EdkCompatibilityPkg/Foundation/Library/Pei/PeiLib/PeiLib.c

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/*++
Copyright (c) 2004 - 2007, Intel Corporation
All rights reserved. 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.
Module Name:
PeiLib.c
Abstract:
PEI Library Functions
--*/
#include "TianoCommon.h"
#include "PeiHob.h"
#include "Pei.h"
#include "PeiLib.h"
VOID
PeiCopyMem (
IN VOID *Destination,
IN VOID *Source,
IN UINTN Length
);
VOID
ZeroMem (
IN VOID *Buffer,
IN UINTN Size
)
/*++
Routine Description:
Set Buffer to zero for Size bytes.
Arguments:
Buffer - Memory to set.
Size - Number of bytes to set
Returns:
None
--*/
{
INT8 *Ptr;
Ptr = Buffer;
while (Size--) {
*(Ptr++) = 0;
}
}
VOID
PeiCopyMem (
IN VOID *Destination,
IN VOID *Source,
IN UINTN Length
)
/*++
Routine Description:
Copy Length bytes from Source to Destination.
Arguments:
Destination - Target of copy
Source - Place to copy from
Length - Number of bytes to copy
Returns:
None
--*/
{
CHAR8 *Destination8;
CHAR8 *Source8;
Destination8 = Destination;
Source8 = Source;
if (((Source8 + Length) <= Destination8) || (Source8 >= Destination8)) {
while (Length--) {
*(Destination8++) = *(Source8++);
}
} else {
while (Length--) {
*(Destination8 + Length) = *(Source8 + Length);
}
}
}
VOID
CopyMem (
IN VOID *Destination,
IN VOID *Source,
IN UINTN Length
)
/*++
Routine Description:
Copy Length bytes from Source to Destination.
Arguments:
Destination - Target of copy
Source - Place to copy from
Length - Number of bytes to copy
Returns:
None
--*/
{
CHAR8 *Destination8;
CHAR8 *Source8;
Destination8 = Destination;
Source8 = Source;
if (((Source8 + Length) <= Destination8) || (Source8 >= Destination8)) {
while (Length--) {
*(Destination8++) = *(Source8++);
}
} else {
while (Length--) {
*(Destination8 + Length) = *(Source8 + Length);
}
}
}
BOOLEAN
CompareGuid (
IN EFI_GUID *Guid1,
IN EFI_GUID *Guid2
)
/*++
Routine Description:
Compares two GUIDs
Arguments:
Guid1 - guid to compare
Guid2 - guid to compare
Returns:
= TRUE if Guid1 == Guid2
= FALSE if Guid1 != Guid2
--*/
{
if ((((INT32 *) Guid1)[0] - ((INT32 *) Guid2)[0]) == 0) {
if ((((INT32 *) Guid1)[1] - ((INT32 *) Guid2)[1]) == 0) {
if ((((INT32 *) Guid1)[2] - ((INT32 *) Guid2)[2]) == 0) {
if ((((INT32 *) Guid1)[3] - ((INT32 *) Guid2)[3]) == 0) {
return TRUE;
}
}
}
}
return FALSE;
}
#if (PI_SPECIFICATION_VERSION >= 0x00010000)
VOID *
EFIAPI
ScanGuid (
IN VOID *Buffer,
IN UINTN Length,
IN EFI_GUID *Guid
)
/*++
Routine Description:
Scans a target buffer for a GUID, and returns a pointer to the matching GUID
in the target buffer.
This function searches target the buffer specified by Buffer and Length from
the lowest address to the highest address at 128-bit increments for the 128-bit
GUID value that matches Guid. If a match is found, then a pointer to the matching
GUID in the target buffer is returned. If no match is found, then NULL is returned.
If Length is 0, then NULL is returned.
If Length > 0 and Buffer is NULL, then ASSERT().
If Buffer is not aligned on a 32-bit boundary, then ASSERT().
If Length is not aligned on a 128-bit boundary, then ASSERT().
If Length is greater than (EFI_MAX_ADDRESS ?Buffer + 1), then ASSERT().
Arguments:
Buffer - Pointer to the target buffer to scan.
Length - Number of bytes in Buffer to scan.
Guid - Value to search for in the target buffer.
Returns:
A pointer to the matching Guid in the target buffer or NULL otherwise.
--*/
{
EFI_GUID *GuidPtr;
EFI_PEI_SERVICES **PeiServices;
PeiServices = GetPeiServicesTablePointer();
PEI_ASSERT(PeiServices, (((UINTN)Buffer & (sizeof (Guid->Data1) - 1)) == 0));
PEI_ASSERT(PeiServices, (Length <= (EFI_MAX_ADDRESS - (UINTN)Buffer + 1)));
PEI_ASSERT(PeiServices, ((Length & (sizeof (*GuidPtr) - 1)) == 0));
GuidPtr = (EFI_GUID*)Buffer;
Buffer = GuidPtr + Length / sizeof (*GuidPtr);
while (GuidPtr < (EFI_GUID*)Buffer) {
if (CompareGuid (GuidPtr, Guid)) {
return (VOID*)GuidPtr;
}
GuidPtr++;
}
return NULL;
}
VOID *
EFIAPI
InvalidateInstructionCacheRange (
IN VOID *Address,
IN UINTN Length
)
/*++
Routine Description:
Invalidates a range of instruction cache lines in the cache coherency domain
of the calling CPU.
Invalidates the instruction cache lines specified by Address and Length. If
Address is not aligned on a cache line boundary, then entire instruction
cache line containing Address is invalidated. If Address + Length is not
aligned on a cache line boundary, then the entire instruction cache line
containing Address + Length -1 is invalidated. This function may choose to
invalidate the entire instruction cache if that is more efficient than
invalidating the specified range. If Length is 0, the no instruction cache
lines are invalidated. Address is returned.
If Length is greater than (EFI_MAX_ADDRESS - Address + 1), then ASSERT().
Arguments:
Address - The base address of the instruction cache lines to
invalidate. If the CPU is in a physical addressing mode, then
Address is a physical address. If the CPU is in a virtual
addressing mode, then Address is a virtual address.
Length - The number of bytes to invalidate from the instruction cache.
Returns:
Address
**/
{
PEI_ASSERT(GetPeiServicesTablePointer() , (Length <= EFI_MAX_ADDRESS - (UINTN)Address + 1));
return Address;
}
EFI_STATUS
EFIAPI
PeiLibFfsFindNextVolume (
IN UINTN Instance,
IN OUT EFI_PEI_FV_HANDLE *VolumeHandle
)
/*++
Routine Description:
The wrapper of Pei Core Service function FfsFindNextVolume.
Arguments:
Instance - The Fv Volume Instance.
VolumeHandle - Pointer to the current Fv Volume to search.
Returns:
EFI_STATUS
--*/
{
EFI_PEI_SERVICES **PeiServices;
PeiServices = GetPeiServicesTablePointer();
return (*PeiServices)->FfsFindNextVolume (PeiServices, Instance, VolumeHandle);
}
EFI_STATUS
EFIAPI
PeiLibFfsFindNextFile (
IN EFI_FV_FILETYPE SearchType,
IN EFI_PEI_FV_HANDLE FwVolHeader,
IN OUT EFI_PEI_FILE_HANDLE *FileHeader
)
/*++
Routine Description:
The wrapper of Pei Core Service function FfsFindNextFile.
Arguments:
SearchType - Filter to find only file of this type.
FwVolHeader - Pointer to the current FV to search.
FileHandle - Pointer to the file matching SearchType in FwVolHeader.
- NULL if file not found
Returns:
EFI_STATUS
--*/
{
EFI_PEI_SERVICES **PeiServices;
PeiServices = GetPeiServicesTablePointer();
return (*PeiServices)->FfsFindNextFile (PeiServices, SearchType, &FwVolHeader, &FileHeader);
}
EFI_STATUS
EFIAPI
PeiLibFfsFindFileByName (
IN EFI_GUID *FileName,
IN EFI_PEI_FV_HANDLE VolumeHandle,
OUT EFI_PEI_FILE_HANDLE *FileHandle
)
/*++
Routine Description:
The wrapper of Pei Core Service function FfsFindFileByName.
Arguments:
FileName - File name to search.
VolumeHandle - The current FV to search.
FileHandle - Pointer to the file matching name in VolumeHandle.
- NULL if file not found
Returns:
EFI_STATUS
--*/
{
EFI_PEI_SERVICES **PeiServices;
PeiServices = GetPeiServicesTablePointer();
return (*PeiServices)->FfsFindFileByName (FileName, VolumeHandle, FileHandle);
}
EFI_STATUS
EFIAPI
PeiLibFfsFindSectionData (
IN EFI_SECTION_TYPE SectionType,
IN EFI_FFS_FILE_HEADER *FfsFileHeader,
IN OUT VOID **SectionData
)
/*++
Routine Description:
The wrapper of Pei Core Service function FfsFindSectionData.
Arguments:
SearchType - Filter to find only sections of this type.
FileHandle - Pointer to the current file to search.
SectionData - Pointer to the Section matching SectionType in FfsFileHeader.
- NULL if section not found
Returns:
EFI_STATUS
--*/
{
EFI_PEI_SERVICES **PeiServices;
PeiServices = GetPeiServicesTablePointer();
return (*PeiServices)->FfsFindSectionData (PeiServices, SectionType, &FfsFileHeader, SectionData);
}
EFI_STATUS
EFIAPI
PeiLibFfsGetVolumeInfo (
IN EFI_PEI_FV_HANDLE *VolumeHandle,
OUT EFI_FV_INFO *VolumeInfo
)
/*++
Routine Description:
The wrapper of Pei Core Service function FfsGetVolumeInfo.
Arguments:
VolumeHandle - The handle to Fv Volume.
VolumeInfo - The pointer to volume information.
Returns:
EFI_STATUS
--*/
{
EFI_PEI_SERVICES **PeiServices;
PeiServices = GetPeiServicesTablePointer();
return (*PeiServices)->FfsGetVolumeInfo (VolumeHandle, VolumeInfo);
}
VOID
EFIAPI
BuildFvHob (
IN EFI_PHYSICAL_ADDRESS BaseAddress,
IN UINT64 Length
)
/*++
Routine Description:
Build FvHob.
Arguments:
BaseAddress - Fv base address.
Length - Fv Length.
Returns:
NONE.
--*/
{
EFI_STATUS Status;
EFI_HOB_FIRMWARE_VOLUME *Hob;
EFI_PEI_SERVICES **PeiServices;
PeiServices = GetPeiServicesTablePointer();
//
// Check FV Signature
//
PEI_ASSERT (PeiServices, ((EFI_FIRMWARE_VOLUME_HEADER*)((UINTN)BaseAddress))->Signature == EFI_FVH_SIGNATURE);
Status = (*PeiServices)->CreateHob (
PeiServices,
EFI_HOB_TYPE_FV,
sizeof (EFI_HOB_FIRMWARE_VOLUME),
&Hob
);
Hob->BaseAddress = BaseAddress;
Hob->Length = Length;
}
VOID
EFIAPI
BuildFvHob2 (
IN EFI_PHYSICAL_ADDRESS BaseAddress,
IN UINT64 Length,
IN EFI_GUID *FvNameGuid,
IN EFI_GUID *FileNameGuid
)
/*++
Routine Description:
Build FvHob2.
Arguments:
BaseAddress - Fv base address.
Length - Fv length.
FvNameGuid - Fv name.
FileNameGuid - File name which contians encapsulated Fv.
Returns:
NONE.
--*/
{
EFI_STATUS Status;
EFI_HOB_FIRMWARE_VOLUME2 *Hob;
EFI_PEI_SERVICES **PeiServices;
PeiServices = GetPeiServicesTablePointer();
//
// Check FV Signature
//
PEI_ASSERT (PeiServices, ((EFI_FIRMWARE_VOLUME_HEADER*)((UINTN)BaseAddress))->Signature == EFI_FVH_SIGNATURE);
Status = (*PeiServices)->CreateHob (
PeiServices,
EFI_HOB_TYPE_FV2,
sizeof (EFI_HOB_FIRMWARE_VOLUME2),
&Hob
);
Hob->BaseAddress = BaseAddress;
Hob->Length = Length;
CopyMem ((VOID*)&Hob->FvName, FvNameGuid, sizeof(EFI_GUID));
CopyMem ((VOID*)&Hob->FileName, FileNameGuid, sizeof(EFI_GUID));
}
EFI_STATUS
EFIAPI
PeiServicesLocatePpi (
IN EFI_GUID *Guid,
IN UINTN Instance,
IN OUT EFI_PEI_PPI_DESCRIPTOR **PpiDescriptor,
IN OUT VOID **Ppi
)
/*++
Routine Description:
The wrapper of Pei Core Service function LocatePpi.
Arguments:
Guid - Pointer to GUID of the PPI.
Instance - Instance Number to discover.
PpiDescriptor - Pointer to reference the found descriptor. If not NULL,
returns a pointer to the descriptor (includes flags, etc)
Ppi - Pointer to reference the found PPI
Returns:
Status - EFI_SUCCESS if the PPI is in the database
EFI_NOT_FOUND if the PPI is not in the database
--*/
{
EFI_PEI_SERVICES **PeiServices;
PeiServices = GetPeiServicesTablePointer();
return (*PeiServices)->LocatePpi (PeiServices, Guid, Instance, PpiDescriptor, Ppi);
}
VOID
EFIAPI
BuildGuidDataHob (
IN EFI_GUID *Guid,
IN VOID *Data,
IN UINTN DataLength
)
/*++
Routine Description:
Build Guid data Hob.
Arguments:
Guid - guid to build data hob.
Data - data to build data hob.
DataLength - the length of data.
Returns:
NONE
--*/
{
VOID *HobData;
EFI_HOB_GUID_TYPE *Hob;
EFI_PEI_SERVICES **PeiServices;
PeiServices = GetPeiServicesTablePointer();
(*PeiServices)->CreateHob (
PeiServices,
EFI_HOB_TYPE_GUID_EXTENSION,
(UINT16) (sizeof (EFI_HOB_GUID_TYPE) + DataLength),
&Hob
);
CopyMem ((VOID*)&Hob->Name, (VOID*)Guid, sizeof(EFI_GUID));
HobData = Hob + 1;
CopyMem (HobData, Data, DataLength);
}
VOID *
EFIAPI
AllocatePages (
IN UINTN Pages
)
/*++
Routine Description:
Allocate Memory.
Arguments:
Pages - Pages to allocate.
Returns:
= Address if successful to allocate memory.
= NULL if fail to allocate memory.
--*/
{
EFI_STATUS Status;
EFI_PHYSICAL_ADDRESS Memory;
EFI_PEI_SERVICES **PeiServices;
if (Pages == 0) {
return NULL;
}
PeiServices = GetPeiServicesTablePointer();
Status = (*PeiServices)->AllocatePages (PeiServices, EfiBootServicesData, Pages, &Memory);
if (EFI_ERROR (Status)) {
Memory = 0;
}
return (VOID *) (UINTN) Memory;
}
#endif
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