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Refine code for BasePalCallLibNull & PeiPalCallLib.

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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5506 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
xli24 2008-07-16 14:36:38 +00:00
parent 9c8eefab05
commit 4cb0344efe
2 changed files with 30 additions and 38 deletions
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28
MdePkg/Library/BasePalCallLibNull/PalCall.c
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@ -2,7 +2,7 @@
Template and Sample instance of PalCallLib. Template and Sample instance of PalCallLib.
Copyright (c) 2006 - 2007, Intel Corporation Copyright (c) 2006 - 2008, Intel Corporation
All rights reserved. This program and the accompanying materials All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License 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 which accompanies this distribution. The full text of the license may be found at
@ -19,26 +19,16 @@
/** /**
Makes a PAL procedure call. Makes a PAL procedure call.
This is a wrapper function to make a PAL procedure call. Based on the Index value, This is a wrapper function to make a PAL procedure call.
this API will make static or stacked PAL call. Architected procedures may be designated This is just a template as simple instance. It does not
as required or optional. If a PAL procedure is specified as optional, a unique return make real PAL call. It directly reports error if called.
code of 0xFFFFFFFFFFFFFFFF is returned in the Status field of the PAL_CALL_RETURN structure.
This indicates that the procedure is not present in this PAL implementation. It is the
caller's responsibility to check for this return code after calling any optional PAL
procedure. No parameter checking is performed on the 4 input parameters, but there are
some common rules that the caller should follow when making a PAL call. Any address
passed to PAL as buffers for return parameters must be 8-byte aligned. Unaligned addresses
may cause undefined results. For those parameters defined as reserved or some fields
defined as reserved must be zero filled or the invalid argument return value may be
returned or undefined result may occur during the execution of the procedure.
This function is only available on IPF.
@param Index - The PAL procedure Index number. @param Index The PAL procedure Index number.
@param Arg2 - The 2nd parameter for PAL procedure calls. @param Arg2 The 2nd parameter for PAL procedure calls.
@param Arg3 - The 3rd parameter for PAL procedure calls. @param Arg3 The 3rd parameter for PAL procedure calls.
@param Arg4 - The 4th parameter for PAL procedure calls. @param Arg4 The 4th parameter for PAL procedure calls.
@return structure returned from the PAL Call procedure, including the status and return value. @return Structure returned from the PAL Call procedure, including the status and return value.
**/ **/
PAL_CALL_RETURN PAL_CALL_RETURN

40
MdePkg/Library/PeiPalCallLib/PalCallLib.c
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@ -1,7 +1,7 @@
/** @file /** @file
PAL Call Services Function. PAL Call Services Function.
Copyright (c) 2006 - 2007 Intel Corporation. All rights reserved Copyright (c) 2006 - 2008 Intel Corporation. All rights reserved
This software and associated documentation (if any) is furnished This software and associated documentation (if any) is furnished
under a license and may only be used or copied in accordance under a license and may only be used or copied in accordance
with the terms of the license. Except as permitted by such with the terms of the license. Except as permitted by such
@ -26,8 +26,8 @@
#include <Library/DebugLib.h> #include <Library/DebugLib.h>
/** /**
Makes a PAL procedure call. Makes a PAL procedure call.
This is a wrapper function to make a PAL procedure call. Based on the Index value, This is a wrapper function to make a PAL procedure call. Based on the Index value,
this API will make static or stacked PAL call. Architected procedures may be designated this API will make static or stacked PAL call. Architected procedures may be designated
as required or optional. If a PAL procedure is specified as optional, a unique return as required or optional. If a PAL procedure is specified as optional, a unique return
@ -42,12 +42,12 @@
returned or undefined result may occur during the execution of the procedure. returned or undefined result may occur during the execution of the procedure.
This function is only available on IPF. This function is only available on IPF.
@param Index - The PAL procedure Index number. @param Index The PAL procedure Index number.
@param Arg2 - The 2nd parameter for PAL procedure calls. @param Arg2 The 2nd parameter for PAL procedure calls.
@param Arg3 - The 3rd parameter for PAL procedure calls. @param Arg3 The 3rd parameter for PAL procedure calls.
@param Arg4 - The 4th parameter for PAL procedure calls. @param Arg4 The 4th parameter for PAL procedure calls.
@return structure returned from the PAL Call procedure, including the status and return value. @return Structure returned from the PAL Call procedure, including the status and return value.
**/ **/
PAL_CALL_RETURN PAL_CALL_RETURN
@ -68,28 +68,30 @@ PalCall (
UINT64 RecordSize; UINT64 RecordSize;
// //
// Get Pei Service Table Pointer // Get PEI Service Table Pointer
// //
PeiServices = (CONST EFI_PEI_SERVICES **) GetPeiServicesTablePointer (); PeiServices = (CONST EFI_PEI_SERVICES **) GetPeiServicesTablePointer ();
// //
// Locate SEC Ppi // Locate SEC Platform Information PPI
// //
Status = PeiServicesLocatePpi ( Status = PeiServicesLocatePpi (
&gEfiSecPlatformInformationPpiGuid, &gEfiSecPlatformInformationPpiGuid,
0, 0,
NULL, NULL,
(VOID **)&SecPlatformPpi (VOID **)&SecPlatformPpi
); );
ASSERT_EFI_ERROR (Status); ASSERT_EFI_ERROR (Status);
//
// Retrieve PAL call address from platform information reported by the PPI
//
RecordSize = sizeof (IpfStatus); RecordSize = sizeof (IpfStatus);
SecPlatformPpi->PlatformInformation ( SecPlatformPpi->PlatformInformation (
PeiServices, PeiServices,
&RecordSize, &RecordSize,
(EFI_SEC_PLATFORM_INFORMATION_RECORD *) &IpfStatus (EFI_SEC_PLATFORM_INFORMATION_RECORD *) &IpfStatus
); );
PalCallAddress = IpfStatus.PalCallAddress; PalCallAddress = IpfStatus.PalCallAddress;
ReturnVal = AsmPalCall (PalCallAddress, Index, Arg2, Arg3, Arg4); ReturnVal = AsmPalCall (PalCallAddress, Index, Arg2, Arg3, Arg4);