Vlv2TbltDevicePkg/PlatformInitPei/PlatformSsaInitPeim.c

   1 /** @file
   2
   3   Copyright (c) 2004  - 2014, Intel Corporation. All rights reserved.<BR>
   4
   5   This program and the accompanying materials are licensed and made available under
   6   the terms and conditions of the BSD License that accompanies this distribution.
   7   The full text of the license may be found at
   8   http://opensource.org/licenses/bsd-license.php.
   9
  10   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13
  14 Module Name:
  15
  16
  17   PlatformSsaInitPeim.c
  18
  19 Abstract:
  20
  21
  22 --*/
  23
  24 #include "PlatformEarlyInit.h"
  25
  26 /**
  27   Perform SSA related platform initialization.
  28
  29 **/
  30 VOID
  31 PlatformSsaInit (
  32   IN SYSTEM_CONFIGURATION        *SystemConfiguration,
  33   IN CONST EFI_PEI_SERVICES          **PeiServices
  34   )
  35 {
  36
  37   DEBUG ((EFI_D_ERROR, "PlatformSsaInit() - Start\n"));
  38   DEBUG ((EFI_D_ERROR, "PlatformSsaInit() - SystemConfiguration->ISPDevSel 0x%x\n",SystemConfiguration->ISPDevSel));
  39   if(SystemConfiguration->ISPDevSel == 0x02)
  40   {
  41     //
  42     // Device 3 Interrupt Route
  43     //
  44     MmioWrite16 (
  45       (ILB_BASE_ADDRESS + R_PCH_ILB_D3IR),
  46       V_PCH_ILB_DXXIR_IAR_PIRQH   // For IUNIT
  47     );
  48     MmioRead16(ILB_BASE_ADDRESS + R_PCH_ILB_D3IR); // Read Posted Writes Register
  49     DEBUG ((EFI_D_ERROR, "PlatformSsaInit() - Device 3 Interrupt Route Done\n"));
  50   }
  51
  52   //
  53   // Device 2 Interrupt Route
  54   //
  55   MmioWrite16 (
  56     (ILB_BASE_ADDRESS + R_PCH_ILB_D2IR),
  57     V_PCH_ILB_DXXIR_IAR_PIRQA   // For IGD
  58   );
  59   MmioRead16(ILB_BASE_ADDRESS + R_PCH_ILB_D2IR); // Read Posted Writes Register
  60   DEBUG ((EFI_D_ERROR, "PlatformSsaInit() - Device 2 Interrupt Route Done\n"));
  61
  62   return;
  63 }