From 1a3eaf06d52a64b4de0942700ba4c01533f53e0f Mon Sep 17 00:00:00 2001 From: xli24 Date: Tue, 11 Nov 2008 08:33:02 +0000 Subject: 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 --- MdePkg/Library/UefiPalLib/UefiPalLib.c | 126 +++++++++++++++++++++++++++++++ MdePkg/Library/UefiPalLib/UefiPalLib.inf | 47 ++++++++++++ 2 files changed, 173 insertions(+) create mode 100644 MdePkg/Library/UefiPalLib/UefiPalLib.c create mode 100644 MdePkg/Library/UefiPalLib/UefiPalLib.inf (limited to 'MdePkg/Library/UefiPalLib') 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 + +#include +#include +#include +#include + +#include + +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 + -- cgit v1.2.3