src/vendorcode/amd/agesa/f15tn/Proc/Fch/Imc/Family/Hudson2/Hudson2ImcService.c

/* $NoKeywords:$ */
/**
 * @file
 *
 * Config Fch Imc controller
 *
 * Init Imc Controller features.
 *
 * @xrefitem bom "File Content Label" "Release Content"
 * @e project:     AGESA
 * @e sub-project: FCH
 * @e \$Revision: 63425 $   @e \$Date: 2011-12-22 11:24:10 -0600 (Thu, 22 Dec 2011) $
 *
 */
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*/
#include "FchPlatform.h"
#include "Filecode.h"
#define FILECODE PROC_FCH_IMC_FAMILY_HUDSON2_HUDSON2IMCSERVICE_FILECODE

//
// Declaration of local functions
//


/**
 * SoftwareToggleImcStrapping - Software Toggle IMC Firmware Strapping.
 *
 *
 * @param[in] FchDataPtr Fch configuration structure pointer.
 *
 */
VOID
SoftwareToggleImcStrapping (
  IN  VOID     *FchDataPtr
  )
{
  UINT8    ValueByte;
  UINT8    PortStatusByte;
  UINT32   AbValue;
  UINT32   ABStrapOverrideReg;
  AMD_CONFIG_PARAMS     *StdHeader;

  StdHeader = ((FCH_DATA_BLOCK *) FchDataPtr)->StdHeader;
  GetChipSysMode (&PortStatusByte, StdHeader);

  ReadPmio (FCH_PMIOA_REGBF, AccessWidth8, &ValueByte, StdHeader);

  //
  //if ( (ValueByte & (BIT6 + BIT7)) != 0xC0 ) {  // PwrGoodOut =1, PwrGoodEnB=1
  //The strapStatus register is not mapped into StrapOveride not in the same bit position. The following is difference.
  //
  //StrapStatus                               StrapOverride
  //   bit4                                            bit17
  //   bit6                                            bit12
  //   bit12                                           bit15
  //   bit15                                           bit16
  //   bit16                                           bit18
  //
  ReadMem ((ACPI_MMIO_BASE + MISC_BASE + 0x80 ), AccessWidth32, &AbValue);
  ABStrapOverrideReg = AbValue;

  if (AbValue & BIT4) {
    ABStrapOverrideReg = (ABStrapOverrideReg & ~BIT4) | BIT17;
  }

  if (AbValue & BIT6) {
    ABStrapOverrideReg = (ABStrapOverrideReg & ~BIT6) | BIT12;
  }

  if (AbValue & BIT12) {
    ABStrapOverrideReg = (ABStrapOverrideReg & ~BIT12) | BIT15;
  }

  if (AbValue & BIT15) {
    ABStrapOverrideReg = (ABStrapOverrideReg & ~BIT15) | BIT16;
  }

  if (AbValue & BIT16) {
    ABStrapOverrideReg = (ABStrapOverrideReg & ~BIT16) | BIT18;
  }

  ABStrapOverrideReg |= BIT31;                             /// Overwrite enable

  if ((PortStatusByte & ChipSysEcEnable) == 0) {
    ABStrapOverrideReg |= BIT2;                            /// bit2- EcEnableStrap
  } else {
    ABStrapOverrideReg &= ~BIT2;                           /// bit2=0 EcEnableStrap
  }

  WriteMem ((ACPI_MMIO_BASE + MISC_BASE + 0x84 ), AccessWidth32, &ABStrapOverrideReg);
  ValueByte |= (BIT6 + BIT7);                    /// PwrGoodOut =1, PwrGoodEnB=1
  WritePmio (FCH_PMIOA_REGBF, AccessWidth8, &ValueByte, StdHeader);

  ValueByte = 06;
  LibAmdIoWrite (AccessWidth8, 0xcf9, &ValueByte, StdHeader);
  FchStall (0xffffffff, StdHeader);
}