Vlv2TbltDevicePkg: Replace BSD License with BSD+Patent License

[mirror_edk2.git] / Vlv2TbltDevicePkg / PlatformDxe / ExI.c

/** @file\r
\r
  Copyright (c) 2004  - 2014, Intel Corporation. All rights reserved.<BR>\r
                                                                                   \r\r
  SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
                                                                                   \r\r
\r
Module Name:\r
\r
\r
  ExI.c\r
\r
Abstract:\r
\r
  ExI configuration based on setup option\r
\r
\r
--*/\r
\r
\r
#include "PlatformDxe.h"\r
\r
#define PchLpcPciCfg32(Register)  MmioRead32 (MmPciAddress (0, DEFAULT_PCI_BUS_NUMBER_PCH, PCI_DEVICE_NUMBER_PCH_LPC, 0, Register))\r
\r
//\r
// Procedure: GetPmcBase\r
//\r
// Description: This function read content of B:D:F 0:31:0, offset 44h (for\r
// PmcBase)\r
//\r
// Input: None\r
//\r
// Output:  32 bit PmcBase\r
//\r
UINT32\r
GetPmcBase (\r
  VOID\r
  )\r
{\r
  return (PchLpcPciCfg32 (R_PCH_LPC_PMC_BASE) & B_PCH_LPC_PMC_BASE_BAR);\r
}\r
\r
/**\r
  Configure ExI.\r
\r
  @param ImageHandle    Pointer to the loaded image protocol for this driver\r
  @param SystemTable    Pointer to the EFI System Table\r
\r
  @retval EFI_SUCCESS   The driver initializes correctly.\r
**/\r
VOID\r
InitExI (\r
  )\r
{\r
  EFI_STATUS                  Status;\r
\r
  SYSTEM_CONFIGURATION          SystemConfiguration;\r
  UINTN       VarSize;\r
\r
  VarSize = sizeof(SYSTEM_CONFIGURATION);\r
\r
  Status = gRT->GetVariable(\r
                  L"Setup",\r
                  &gEfiNormalSetupGuid,\r
                  NULL,\r
                  &VarSize,\r
                  &SystemConfiguration\r
                  );\r
\r
  if (EFI_ERROR (Status) || VarSize != sizeof(SYSTEM_CONFIGURATION)) {\r
    //The setup variable is corrupted\r
    VarSize = sizeof(SYSTEM_CONFIGURATION);\r
    Status = gRT->GetVariable(\r
              L"SetupRecovery",\r
              &gEfiNormalSetupGuid,\r
              NULL,\r
              &VarSize,\r
              &SystemConfiguration\r
              );\r
    ASSERT_EFI_ERROR (Status);\r
  }  \r
\r
  if (SystemConfiguration.ExISupport == 1) {\r
	  MmioOr32 ((UINTN) (GetPmcBase() + R_PCH_PMC_MTPMC1), (UINT32) BIT0+BIT1+BIT2);\r
  } else if (SystemConfiguration.ExISupport == 0) {\r
    MmioAnd32 ((UINTN) (GetPmcBase() + R_PCH_PMC_MTPMC1), ~((UINT32) BIT0+BIT1+BIT2)); //clear bit 0,1,2\r
  }\r
}\r