Vlv2TbltDevicePkg/PlatformInitPei/PlatformSsaInitPeim.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   PlatformSsaInitPeim.c
  13
  14 Abstract:
  15
  16
  17 --*/
  18
  19 #include "PlatformEarlyInit.h"
  20
  21 /**
  22   Perform SSA related platform initialization.
  23
  24 **/
  25 VOID
  26 PlatformSsaInit (
  27   IN SYSTEM_CONFIGURATION        *SystemConfiguration,
  28   IN CONST EFI_PEI_SERVICES          **PeiServices
  29   )
  30 {
  31
  32   DEBUG ((EFI_D_ERROR, "PlatformSsaInit() - Start\n"));
  33   DEBUG ((EFI_D_ERROR, "PlatformSsaInit() - SystemConfiguration->ISPDevSel 0x%x\n",SystemConfiguration->ISPDevSel));
  34   if(SystemConfiguration->ISPDevSel == 0x02)
  35   {
  36     //
  37     // Device 3 Interrupt Route
  38     //
  39     MmioWrite16 (
  40       (ILB_BASE_ADDRESS + R_PCH_ILB_D3IR),
  41       V_PCH_ILB_DXXIR_IAR_PIRQH   // For IUNIT
  42     );
  43     MmioRead16(ILB_BASE_ADDRESS + R_PCH_ILB_D3IR); // Read Posted Writes Register
  44     DEBUG ((EFI_D_ERROR, "PlatformSsaInit() - Device 3 Interrupt Route Done\n"));
  45   }
  46
  47   //
  48   // Device 2 Interrupt Route
  49   //
  50   MmioWrite16 (
  51     (ILB_BASE_ADDRESS + R_PCH_ILB_D2IR),
  52     V_PCH_ILB_DXXIR_IAR_PIRQA   // For IGD
  53   );
  54   MmioRead16(ILB_BASE_ADDRESS + R_PCH_ILB_D2IR); // Read Posted Writes Register
  55   DEBUG ((EFI_D_ERROR, "PlatformSsaInit() - Device 2 Interrupt Route Done\n"));
  56
  57   return;
  58 }