diff options
| author | vprabhal <vprabhal@6f19259b-4bc3-4df7-8a09-765794883524> | 2007-10-11 23:51:46 +0000 |
|---|---|---|
| committer | vprabhal <vprabhal@6f19259b-4bc3-4df7-8a09-765794883524> | 2007-10-11 23:51:46 +0000 |
| commit | ed8717c58fc299acfb7dbc112e69e968de2f81e3 (patch) | |
| tree | 5eb9f3fd5a374764dd64280ed26f9a787f3f9d42 /MdePkg/Library/PeiPalCallLib/PalCallLib.c | |
| parent | 38c72bd45fa508a9f97b9b4540627b6113654895 (diff) | |
| download | edk2-platforms-ed8717c58fc299acfb7dbc112e69e968de2f81e3.tar.xz | |
moved the PeiPalCallLib from ItaniumFamilyCpuPkg to MdePkg
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@4102 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdePkg/Library/PeiPalCallLib/PalCallLib.c')
| -rw-r--r-- | MdePkg/Library/PeiPalCallLib/PalCallLib.c | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/MdePkg/Library/PeiPalCallLib/PalCallLib.c b/MdePkg/Library/PeiPalCallLib/PalCallLib.c new file mode 100644 index 0000000000..4d52fc36cf --- /dev/null +++ b/MdePkg/Library/PeiPalCallLib/PalCallLib.c @@ -0,0 +1,101 @@ +/** @file
+ PAL Call Services Function.
+
+ Copyright (c) 2006 - 2007 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: PalCallLib.c
+
+**/
+
+
+#include <PiPei.h>
+#include <ItaniumFamilyCpuPeim.h>
+
+#include <Ppi/SecPlatformInformation.h>
+
+#include <Library/PalCallLib.h>
+#include <Library/PeiServicesTablePointerLib.h>
+#include <Library/PeiServicesLib.h>
+#include <Library/BaseLib.h>
+#include <Library/DebugLib.h>
+
+/**
+
+ Makes a PAL procedure call.
+ 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
+ as required or optional. If a PAL procedure is specified as optional, a unique return
+ 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 Arg2 - The 2nd parameter for PAL procedure calls.
+ @param Arg3 - The 3rd 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.
+
+**/
+PAL_CALL_RETURN
+EFIAPI
+PalCall (
+ IN UINT64 Index,
+ IN UINT64 Arg2,
+ IN UINT64 Arg3,
+ IN UINT64 Arg4
+ )
+{
+ UINT64 PalCallAddress;
+ PAL_CALL_RETURN ReturnVal;
+
+ EFI_PEI_SERVICES **PeiServices;
+ EFI_STATUS Status;
+ EFI_SEC_PLATFORM_INFORMATION_PPI *SecPlatformPpi;
+ IPF_HANDOFF_STATUS IpfStatus;
+ UINT64 RecordSize;
+
+ //
+ // Get Pei Service Table Pointer
+ //
+ PeiServices = GetPeiServicesTablePointer ();
+
+ //
+ // Locate SEC Ppi
+ //
+
+ Status = PeiServicesLocatePpi (
+ &gEfiSecPlatformInformationPpiGuid,
+ 0,
+ NULL,
+ (VOID **)&SecPlatformPpi
+ );
+ ASSERT_EFI_ERROR (Status);
+
+ RecordSize = sizeof (IpfStatus);
+ SecPlatformPpi->PlatformInformation (
+ PeiServices,
+ &RecordSize,
+ (EFI_SEC_PLATFORM_INFORMATION_RECORD *) &IpfStatus
+ );
+ PalCallAddress = IpfStatus.PalCallAddress;
+
+ ReturnVal = AsmPalCall (PalCallAddress, Index, Arg2, Arg3, Arg4);
+
+ return ReturnVal;
+}
+
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