mirror of https://github.com/acidanthera/audk.git
156 lines
3.8 KiB
C
156 lines
3.8 KiB
C
/*++
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Copyright (c) 2006 - 2008 Intel Corporation. <BR>
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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Module Name:
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Variable.c
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Abstract:
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PEIM to provide the Variable functionality
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--*/
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#include <PiPei.h>
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#include <Ppi/PciCfg.h>
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#include <Ppi/PciCfg2.h>
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#include <Library/DebugLib.h>
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//
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// Function Prototypes
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//
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EFI_STATUS
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EFIAPI
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PciCfgRead (
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IN EFI_PEI_SERVICES **PeiServices,
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IN EFI_PEI_PCI_CFG_PPI *This,
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IN EFI_PEI_PCI_CFG_PPI_WIDTH Width,
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IN UINT64 Address,
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IN OUT VOID *Buffer
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);
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EFI_STATUS
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EFIAPI
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PciCfgWrite (
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IN EFI_PEI_SERVICES **PeiServices,
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IN EFI_PEI_PCI_CFG_PPI *This,
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IN EFI_PEI_PCI_CFG_PPI_WIDTH Width,
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IN UINT64 Address,
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IN OUT VOID *Buffer
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);
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EFI_STATUS
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EFIAPI
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PciCfgModify (
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IN EFI_PEI_SERVICES **PeiServices,
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IN EFI_PEI_PCI_CFG_PPI *This,
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IN EFI_PEI_PCI_CFG_PPI_WIDTH Width,
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IN UINT64 Address,
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IN UINTN SetBits,
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IN UINTN ClearBits
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);
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//
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// Module globals
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//
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EFI_PEI_PCI_CFG_PPI mPciCfgPpi = {
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PciCfgRead,
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PciCfgWrite,
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PciCfgModify,
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};
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EFI_PEI_PPI_DESCRIPTOR mPpiListPciCfg = {
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(EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
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&gEfiPciCfgPpiInServiceTableGuid,
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&mPciCfgPpi
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};
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EFI_STATUS
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EFIAPI
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PeimInitializePciCfg (
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IN EFI_FFS_FILE_HEADER *FfsHeader,
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IN CONST EFI_PEI_SERVICES **PeiServices
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)
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/*++
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Routine Description:
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Provide the functionality of the variable services.
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Arguments:
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FfsHeadher - The FFS file header
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PeiServices - General purpose services available to every PEIM.
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Returns:
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Status - EFI_SUCCESS if the interface could be successfully
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installed
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--*/
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{
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//
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// Publish the variable capability to other modules
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//
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return (*PeiServices)->InstallPpi (PeiServices, &mPpiListPciCfg);
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}
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EFI_STATUS
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EFIAPI
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PciCfgRead (
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IN EFI_PEI_SERVICES **PeiServices,
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IN EFI_PEI_PCI_CFG_PPI *This,
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IN EFI_PEI_PCI_CFG_PPI_WIDTH Width,
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IN UINT64 Address,
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IN OUT VOID *Buffer
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)
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{
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EFI_PEI_PCI_CFG2_PPI *PciCfg2;
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PciCfg2 = (*PeiServices)->PciCfg;
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return PciCfg2->Read ((CONST EFI_PEI_SERVICES **)PeiServices, PciCfg2, Width, Address, Buffer);
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}
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EFI_STATUS
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EFIAPI
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PciCfgWrite (
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IN EFI_PEI_SERVICES **PeiServices,
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IN EFI_PEI_PCI_CFG_PPI *This,
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IN EFI_PEI_PCI_CFG_PPI_WIDTH Width,
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IN UINT64 Address,
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IN OUT VOID *Buffer
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)
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{
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EFI_PEI_PCI_CFG2_PPI *PciCfg2;
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PciCfg2 = (*PeiServices)->PciCfg;
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return PciCfg2->Write ((CONST EFI_PEI_SERVICES **)PeiServices, PciCfg2, Width, Address, Buffer);
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}
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EFI_STATUS
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EFIAPI
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PciCfgModify (
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IN EFI_PEI_SERVICES **PeiServices,
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IN EFI_PEI_PCI_CFG_PPI *This,
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IN EFI_PEI_PCI_CFG_PPI_WIDTH Width,
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IN UINT64 Address,
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IN UINTN SetBits,
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IN UINTN ClearBits
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)
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{
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EFI_PEI_PCI_CFG2_PPI *PciCfg2;
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PciCfg2 = (*PeiServices)->PciCfg;
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return PciCfg2->Modify ((CONST EFI_PEI_SERVICES **)PeiServices, PciCfg2, Width, Address, &SetBits, &ClearBits);
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}
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