diff options
| author | xli24 <xli24@6f19259b-4bc3-4df7-8a09-765794883524> | 2008-11-11 08:33:02 +0000 |
|---|---|---|
| committer | xli24 <xli24@6f19259b-4bc3-4df7-8a09-765794883524> | 2008-11-11 08:33:02 +0000 |
| commit | 1a3eaf06d52a64b4de0942700ba4c01533f53e0f (patch) | |
| tree | 7b5c8ac46896de059cc3ccfe03a30a8f6fb583e3 /MdePkg/Library/UefiPalLib | |
| parent | dd4a462dcbcb9de5bb8a139212fef966417e39b8 (diff) | |
| download | edk2-platforms-1a3eaf06d52a64b4de0942700ba4c01533f53e0f.tar.xz | |
Add following library instances to MDE package:
1. DxePciLibPciRootBridgeIo
2. DxePciSegmentLibPciRootBridgeIo
3. PeiPciLibPciCfg2
4. PeiPciSegmentLibPciCfg2
5. UefiPalLib
6. UefiSalLib
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@6451 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdePkg/Library/UefiPalLib')
| -rw-r--r-- | MdePkg/Library/UefiPalLib/UefiPalLib.c | 126 | ||||
| -rw-r--r-- | MdePkg/Library/UefiPalLib/UefiPalLib.inf | 47 |
2 files changed, 173 insertions, 0 deletions
diff --git a/MdePkg/Library/UefiPalLib/UefiPalLib.c b/MdePkg/Library/UefiPalLib/UefiPalLib.c new file mode 100644 index 0000000000..e2550387ba --- /dev/null +++ b/MdePkg/Library/UefiPalLib/UefiPalLib.c @@ -0,0 +1,126 @@ +/** @file
+ PAL Library implementation built upon UEFI.
+
+ Copyright (c) 2007 - 2008, 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.
+
+**/
+
+#include <PiDxe.h>
+
+#include <IndustryStandard/Sal.h>
+#include <Library/UefiLib.h>
+#include <Library/BaseLib.h>
+#include <Library/DebugLib.h>
+
+#include <Guid/SalSystemTable.h>
+
+UINT64 mPalProcEntry;
+
+/**
+ 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
+ )
+{
+ //
+ // mPalProcEntry is initialized in library constructor as PAL entry.
+ //
+ return AsmPalCall (
+ mPalProcEntry,
+ Index,
+ Arg2,
+ Arg3,
+ Arg4
+ );
+
+}
+
+/**
+ The constructor function of UEFI Pal Lib.
+
+ The constructor function looks up the SAL System Table in the EFI System Configuration
+ Table. Once the SAL System Table is found, the PAL Entry Point in the SAL System Table
+ will be derived and stored inot a global variable for library usage.
+ It will ASSERT() if the SAL System Table cannot be found or the data in the SAL System
+ Table is not the valid data.
+
+ @param ImageHandle The firmware allocated handle for the EFI image.
+ @param SystemTable A pointer to the EFI System Table.
+
+ @retval EFI_SUCCESS The constructor always returns EFI_SUCCESS.
+
+**/
+EFI_STATUS
+EFIAPI
+UefiPalLibConstructor (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ EFI_STATUS Status;
+ SAL_ST_ENTRY_POINT_DESCRIPTOR *SalStEntryDes;
+ SAL_SYSTEM_TABLE_HEADER *SalSystemTable;
+
+ Status = EfiGetSystemConfigurationTable (
+ &gEfiSalSystemTableGuid,
+ (VOID **) &SalSystemTable
+ );
+
+ ASSERT_EFI_ERROR (Status);
+
+ //
+ // Move the SAL System Table point to the first Entry
+ // Due to the SAL Entry is in ascending order with the Entry type,
+ // the type 0 Entry should be the first if exist.
+ //
+ SalStEntryDes = (SAL_ST_ENTRY_POINT_DESCRIPTOR *)(SalSystemTable + 1);
+
+ //
+ // Assure the SAL ENTRY Type is 0
+ //
+ ASSERT (SalStEntryDes->Type == EFI_SAL_ST_ENTRY_POINT);
+
+ mPalProcEntry = SalStEntryDes->PalProcEntry;
+ //
+ // Make sure the PalCallAddress has the valid value
+ //
+ ASSERT (mPalProcEntry != 0);
+
+ return EFI_SUCCESS;
+}
diff --git a/MdePkg/Library/UefiPalLib/UefiPalLib.inf b/MdePkg/Library/UefiPalLib/UefiPalLib.inf new file mode 100644 index 0000000000..ae2a564472 --- /dev/null +++ b/MdePkg/Library/UefiPalLib/UefiPalLib.inf @@ -0,0 +1,47 @@ +# @file
+# Uefi Instance of PAL Library Class
+#
+# This library implements the PAL Library Class by getting the PAL entry from SAL System
+# Table, and use AsmPalCall to produce the Pal Call.
+#
+# Copyright (c) 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.
+#
+#
+#
+
+[Defines]
+ INF_VERSION = 0x00010005
+ BASE_NAME = UefiPalLib
+ FILE_GUID = B7F30170-9E5F-482a-B553-A145A5787003
+ MODULE_TYPE = UEFI_DRIVER
+ VERSION_STRING = 1.04
+ LIBRARY_CLASS = PalLib|UEFI_DRIVER UEFI_APPLICATION
+ EDK_RELEASE_VERSION = 0x00020000
+ EFI_SPECIFICATION_VERSION = 0x00020000
+
+ CONSTRUCTOR = UefiPalLibConstructor
+
+#
+# The following information is for reference only and not required by the build tools.
+#
+# VALID_ARCHITECTURES = IPF
+#
+
+[Sources.IPF]
+ UefiPalLib.c
+
+[Packages]
+ MdePkg/MdePkg.dec
+
+[LibraryClasses]
+ UefiLib
+ BaseLib
+ DebugLib
+
|