mirror of https://github.com/acidanthera/audk.git
Add PeiServiceTablePointerLib that uses KR1 to save/restore the PEI Services Table Pointer
This library is only valid for Ipf git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@1993 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
mdkinney
parent
9cbd688b1e
commit
9e95f418cc
|
|
@ -0,0 +1,47 @@
|
|||
//++
|
||||
//
|
||||
// Copyright (c) 2006 Intel Corporation. All rights reserved
|
||||
// This software and associated documentation (if any) is furnished
|
||||
// under a license and may only be used or copied in accordance
|
||||
// with the terms of the license. Except as permitted by such
|
||||
// license, no part of this software or documentation may be
|
||||
// reproduced, stored in a retrieval system, or transmitted in any
|
||||
// form or by any means without the express written consent of
|
||||
// Intel Corporation.
|
||||
//
|
||||
//
|
||||
// Module Name:
|
||||
//
|
||||
// ReadKr1.s
|
||||
//
|
||||
// Abstract:
|
||||
//
|
||||
// Contains assembly code for read Kr1.
|
||||
//
|
||||
//--
|
||||
|
||||
.file "ReadKr1.s"
|
||||
|
||||
#include "IpfMacro.i"
|
||||
|
||||
//---------------------------------------------------------------------------------
|
||||
//++
|
||||
// AsmReadKr1
|
||||
//
|
||||
// This routine is used to get KR1. KR1 is used to store Pei Service Table
|
||||
// Pointer in archeture.
|
||||
//
|
||||
// Arguments :
|
||||
//
|
||||
// On Entry : None.
|
||||
//
|
||||
// Return Value: Pei Services Table.
|
||||
//
|
||||
//--
|
||||
//----------------------------------------------------------------------------------
|
||||
PROCEDURE_ENTRY (AsmReadKr1)
|
||||
|
||||
mov r8 = ar.k1;; // Pei Services Table Pointer
|
||||
br.ret.dpnt b0;;
|
||||
|
||||
PROCEDURE_EXIT (AsmReadKr1)
|
||||
|
|
@ -0,0 +1,48 @@
|
|||
//++
|
||||
//
|
||||
// Copyright (c) 2006 Intel Corporation. All rights reserved
|
||||
// This software and associated documentation (if any) is furnished
|
||||
// under a license and may only be used or copied in accordance
|
||||
// with the terms of the license. Except as permitted by such
|
||||
// license, no part of this software or documentation may be
|
||||
// reproduced, stored in a retrieval system, or transmitted in any
|
||||
// form or by any means without the express written consent of
|
||||
// Intel Corporation.
|
||||
//
|
||||
//
|
||||
// Module Name:
|
||||
//
|
||||
// WriteKr1.s
|
||||
//
|
||||
// Abstract:
|
||||
//
|
||||
// Contains assembly code for write Kr1.
|
||||
//
|
||||
//--
|
||||
|
||||
.file "WriteKr1.s"
|
||||
|
||||
#include "IpfMacro.i"
|
||||
|
||||
//---------------------------------------------------------------------------------
|
||||
//++
|
||||
// AsmWriteKr1
|
||||
//
|
||||
// This routine is used to Write KR1. KR1 is used to store Pei Service Table
|
||||
// Pointer in archeture.
|
||||
//
|
||||
// Arguments : r32 Pei Services Table Pointer
|
||||
//
|
||||
// On Entry : None.
|
||||
//
|
||||
// Return Value: None.
|
||||
//
|
||||
//--
|
||||
//----------------------------------------------------------------------------------
|
||||
PROCEDURE_ENTRY (AsmWriteKr1)
|
||||
|
||||
mov ar.k1 = r32;; // Pei Services Table Pointer
|
||||
br.ret.dpnt b0;;
|
||||
|
||||
PROCEDURE_EXIT (AsmWriteKr1)
|
||||
|
||||
|
|
@ -0,0 +1,91 @@
|
|||
/*++
|
||||
|
||||
Copyright (c) 2006 Intel Corporation. All rights reserved
|
||||
This software and associated documentation (if any) is furnished
|
||||
under a license and may only be used or copied in accordance
|
||||
with the terms of the license. Except as permitted by such
|
||||
license, no part of this software or documentation may be
|
||||
reproduced, stored in a retrieval system, or transmitted in any
|
||||
form or by any means without the express written consent of
|
||||
Intel Corporation.
|
||||
|
||||
|
||||
Module Name:
|
||||
|
||||
PeiServicesTablePointer.c
|
||||
|
||||
Abstract:
|
||||
|
||||
PEI Services Table Pointer Library.
|
||||
|
||||
--*/
|
||||
|
||||
|
||||
/**
|
||||
Reads the current value of Kr1.
|
||||
|
||||
@return The current value of Kr1.
|
||||
|
||||
**/
|
||||
UINT64
|
||||
EFIAPI
|
||||
AsmReadKr1 (
|
||||
VOID
|
||||
);
|
||||
|
||||
/**
|
||||
Writes the current value of Kr1.
|
||||
|
||||
@param Value The 64-bit value to write to Kr1.
|
||||
|
||||
**/
|
||||
VOID
|
||||
EFIAPI
|
||||
AsmWriteKr1 (
|
||||
IN UINT64 Value
|
||||
);
|
||||
|
||||
/**
|
||||
The function returns the pointer to PeiServices.
|
||||
|
||||
The function returns the pointer to PeiServices.
|
||||
It will ASSERT() if the pointer to PeiServices is NULL.
|
||||
|
||||
@retval The pointer to PeiServices.
|
||||
|
||||
**/
|
||||
EFI_PEI_SERVICES **
|
||||
EFIAPI
|
||||
GetPeiServicesTablePointer (
|
||||
VOID
|
||||
)
|
||||
{
|
||||
EFI_PEI_SERVICES **PeiServices;
|
||||
|
||||
PeiServices = (EFI_PEI_SERVICES **)(UINTN)AsmReadKr1 ();
|
||||
ASSERT (PeiServices != NULL);
|
||||
return PeiServices;
|
||||
}
|
||||
|
||||
/**
|
||||
The constructor function caches the pointer to PEI services.
|
||||
|
||||
The constructor function caches the pointer to PEI services.
|
||||
It will always return EFI_SUCCESS.
|
||||
|
||||
@param FfsHeader Pointer to FFS header the loaded driver.
|
||||
@param PeiServices Pointer to the PEI services.
|
||||
|
||||
@retval EFI_SUCCESS The constructor always returns EFI_SUCCESS.
|
||||
|
||||
**/
|
||||
EFI_STATUS
|
||||
EFIAPI
|
||||
PeiServicesTablePointerLibConstructor (
|
||||
IN EFI_FFS_FILE_HEADER *FfsHeader,
|
||||
IN EFI_PEI_SERVICES **PeiServices
|
||||
)
|
||||
{
|
||||
AsmWriteKr1 ((UINT64)(UINTN)PeiServices);
|
||||
return EFI_SUCCESS;
|
||||
}
|
||||
|
|
@ -0,0 +1,51 @@
|
|||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<ModuleSurfaceArea xmlns="http://www.TianoCore.org/2006/Edk2.0">
|
||||
<MsaHeader>
|
||||
<ModuleName>PeiServicesTablePointerLibKr1</ModuleName>
|
||||
<ModuleType>PEIM</ModuleType>
|
||||
<GuidValue>C5F16B67-888F-44ba-ABDB-C2354FB63C49</GuidValue>
|
||||
<Version>1.0</Version>
|
||||
<Abstract>Component description file for IPF KR1 Pei Services Table Pointer Library</Abstract>
|
||||
<Description>PEI Services Table Library implementation that retrieves a pointer to the PEI
|
||||
Services Table from the KR1 register on IPF.</Description>
|
||||
<Copyright>Copyright (c) 2006, Intel Corporation.</Copyright>
|
||||
<License>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.</License>
|
||||
<Specification>FRAMEWORK_BUILD_PACKAGING_SPECIFICATION 0x00000052</Specification>
|
||||
</MsaHeader>
|
||||
<ModuleDefinitions>
|
||||
<SupportedArchitectures>IPF</SupportedArchitectures>
|
||||
<BinaryModule>false</BinaryModule>
|
||||
<OutputFileBasename>PeiServicesTablePointerLibKr1</OutputFileBasename>
|
||||
</ModuleDefinitions>
|
||||
<LibraryClassDefinitions>
|
||||
<LibraryClass Usage="ALWAYS_PRODUCED">
|
||||
<Keyword>PeiServicesTablePointerLib</Keyword>
|
||||
</LibraryClass>
|
||||
<LibraryClass Usage="ALWAYS_CONSUMED">
|
||||
<Keyword>BaseLib</Keyword>
|
||||
</LibraryClass>
|
||||
<LibraryClass Usage="ALWAYS_CONSUMED">
|
||||
<Keyword>DebugLib</Keyword>
|
||||
</LibraryClass>
|
||||
</LibraryClassDefinitions>
|
||||
<SourceFiles>
|
||||
<Filename>PeiServicesTablePointer.c</Filename>
|
||||
<Filename SupArchList="IPF">Ipf/ReadKr1.s</Filename>
|
||||
<Filename SupArchList="IPF">Ipf/WriteKr1.s</Filename>
|
||||
</SourceFiles>
|
||||
<PackageDependencies>
|
||||
<Package PackageGuid="5e0e9358-46b6-4ae2-8218-4ab8b9bbdcec"/>
|
||||
</PackageDependencies>
|
||||
<Externs>
|
||||
<Specification>EFI_SPECIFICATION_VERSION 0x00020000</Specification>
|
||||
<Specification>EDK_RELEASE_VERSION 0x00020000</Specification>
|
||||
<Extern>
|
||||
<Constructor>PeiServicesTablePointerLibConstructor</Constructor>
|
||||
</Extern>
|
||||
</Externs>
|
||||
</ModuleSurfaceArea>
|
||||
Loading…
Reference in New Issue