Vlv2TbltDevicePkg/PlatformDxe/IchRegTable.c

   1 /** @file
   2
   3   Copyright (c) 2004  - 2014, Intel Corporation. All rights reserved.<BR>
   4
   5   SPDX-License-Identifier: BSD-2-Clause-Patent
   6
   7
   8
   9 Module Name:
  10
  11
  12   IchRegTable.c
  13
  14 Abstract:
  15
  16   Register initialization table for Ich.
  17
  18
  19
  20 --*/
  21
  22 #include <Library/EfiRegTableLib.h>
  23 #include "PlatformDxe.h"
  24 extern EFI_PLATFORM_INFO_HOB      mPlatformInfo;
  25
  26 #define R_EFI_PCI_SVID 0x2C
  27
  28 EFI_REG_TABLE mSubsystemIdRegs [] = {
  29
  30   //
  31   // Program SVID and SID for PCI devices.
  32   // Combine two 16 bit PCI_WRITE into one 32 bit PCI_WRITE in order to boost performance
  33   //
  34   PCI_WRITE (
  35       MC_BUS, MC_DEV, MC_FUN, R_EFI_PCI_SVID, EfiPciWidthUint32,
  36       V_PCH_DEFAULT_SVID_SID, OPCODE_FLAG_S3SAVE
  37     ),
  38
  39   PCI_WRITE (
  40       IGD_BUS, IGD_DEV, IGD_FUN_0, R_EFI_PCI_SVID, EfiPciWidthUint32,
  41       V_PCH_DEFAULT_SVID_SID, OPCODE_FLAG_S3SAVE
  42     ),
  43
  44   PCI_WRITE(
  45       DEFAULT_PCI_BUS_NUMBER_PCH, 0, 0, R_EFI_PCI_SVID, EfiPciWidthUint32,
  46       V_PCH_DEFAULT_SVID_SID, OPCODE_FLAG_S3SAVE
  47     ),
  48   PCI_WRITE (
  49       DEFAULT_PCI_BUS_NUMBER_PCH, PCI_DEVICE_NUMBER_PCH_LPC, PCI_FUNCTION_NUMBER_PCH_LPC, R_PCH_LPC_SS, EfiPciWidthUint32,
  50       V_PCH_DEFAULT_SVID_SID, OPCODE_FLAG_S3SAVE
  51     ),
  52   PCI_WRITE (
  53       DEFAULT_PCI_BUS_NUMBER_PCH, PCI_DEVICE_NUMBER_PCH_SATA, PCI_FUNCTION_NUMBER_PCH_SATA, R_PCH_SATA_SS, EfiPciWidthUint32,
  54       V_PCH_DEFAULT_SVID_SID, OPCODE_FLAG_S3SAVE
  55     ),
  56   PCI_WRITE (
  57       DEFAULT_PCI_BUS_NUMBER_PCH, PCI_DEVICE_NUMBER_PCH_SMBUS, PCI_FUNCTION_NUMBER_PCH_SMBUS, R_PCH_SMBUS_SVID, EfiPciWidthUint32,
  58       V_PCH_DEFAULT_SVID_SID, OPCODE_FLAG_S3SAVE
  59     ),
  60   PCI_WRITE (
  61       DEFAULT_PCI_BUS_NUMBER_PCH, PCI_DEVICE_NUMBER_PCH_USB, PCI_FUNCTION_NUMBER_PCH_EHCI, R_PCH_EHCI_SVID, EfiPciWidthUint32,
  62       V_PCH_DEFAULT_SVID_SID, OPCODE_FLAG_S3SAVE
  63     ),
  64   PCI_WRITE (
  65       DEFAULT_PCI_BUS_NUMBER_PCH, PCI_DEVICE_NUMBER_PCH_PCIE_ROOT_PORTS, PCI_FUNCTION_NUMBER_PCH_PCIE_ROOT_PORT_1, R_PCH_PCIE_SVID, EfiPciWidthUint32,
  66       V_PCH_DEFAULT_SVID_SID, OPCODE_FLAG_S3SAVE
  67     ),
  68   PCI_WRITE (
  69       DEFAULT_PCI_BUS_NUMBER_PCH, PCI_DEVICE_NUMBER_PCH_PCIE_ROOT_PORTS, PCI_FUNCTION_NUMBER_PCH_PCIE_ROOT_PORT_2, R_PCH_PCIE_SVID, EfiPciWidthUint32,
  70       V_PCH_DEFAULT_SVID_SID, OPCODE_FLAG_S3SAVE
  71     ),
  72   PCI_WRITE (
  73       DEFAULT_PCI_BUS_NUMBER_PCH, PCI_DEVICE_NUMBER_PCH_PCIE_ROOT_PORTS, PCI_FUNCTION_NUMBER_PCH_PCIE_ROOT_PORT_3, R_PCH_PCIE_SVID, EfiPciWidthUint32,
  74       V_PCH_DEFAULT_SVID_SID, OPCODE_FLAG_S3SAVE
  75     ),
  76   PCI_WRITE (
  77       DEFAULT_PCI_BUS_NUMBER_PCH, PCI_DEVICE_NUMBER_PCH_PCIE_ROOT_PORTS, PCI_FUNCTION_NUMBER_PCH_PCIE_ROOT_PORT_4, R_PCH_PCIE_SVID, EfiPciWidthUint32,
  78       V_PCH_DEFAULT_SVID_SID, OPCODE_FLAG_S3SAVE
  79     ),
  80   TERMINATE_TABLE
  81 };
  82
  83 /**
  84   Updates the mSubsystemIdRegs table, and processes it.  This should program
  85   the Subsystem Vendor and Device IDs.
  86
  87   @retval Returns  VOID
  88
  89 **/
  90 VOID
  91 InitializeSubsystemIds (
  92   )
  93 {
  94
  95   EFI_REG_TABLE *RegTablePtr;
  96   UINT32 SubsystemVidDid;
  97
  98   SubsystemVidDid = mPlatformInfo.SsidSvid;
  99
 100   RegTablePtr = mSubsystemIdRegs;
 101
 102   //
 103   // While we are not at the end of the table
 104   //
 105   while (RegTablePtr->Generic.OpCode != OP_TERMINATE_TABLE) {
 106         //
 107     // If the data to write is the original SSID
 108     //
 109     if (RegTablePtr->PciWrite.Data ==
 110           ((V_PCH_DEFAULT_SID << 16) |
 111            V_PCH_INTEL_VENDOR_ID)
 112        ) {
 113
 114         //
 115       // Then overwrite it to use the alternate SSID
 116       //
 117       RegTablePtr->PciWrite.Data = SubsystemVidDid;
 118     }
 119
 120     //
 121     // Go to next table entry
 122     //
 123     RegTablePtr++;
 124     }
 125
 126   RegTablePtr = mSubsystemIdRegs;
 127
 128
 129   //
 130   // Program the SSVID/SSDID
 131   //
 132   ProcessRegTablePci (mSubsystemIdRegs, mPciRootBridgeIo, NULL);
 133
 134 }