audk/ArmPlatformPkg/Library/ArmPlatformLibNull/ArmPlatformLibNull.c

/** @file
*
*  Copyright (c) 2011, ARM Limited. All rights reserved.
*  
*  This program and the accompanying materials                          
*  are licensed and made available under the terms and conditions of the BSD License         
*  which accompanies this distribution.  The full text of the license may be found at        
*  http://opensource.org/licenses/bsd-license.php                                            
*
*  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     
*  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.             
*
**/

#include <Library/ArmLib.h>
#include <Library/ArmPlatformLib.h>

#include <Ppi/ArmMpCoreInfo.h>


ARM_CORE_INFO mArmPlatformNullMpCoreInfoTable[] = {
  {
    // Cluster 0, Core 0
    0x0, 0x0,

    // MP Core MailBox Set/Get/Clear Addresses and Clear Value
    (EFI_PHYSICAL_ADDRESS)0,
    (EFI_PHYSICAL_ADDRESS)0,
    (EFI_PHYSICAL_ADDRESS)0,
    (UINT64)0xFFFFFFFF
  },
  {
    // Cluster 0, Core 1
    0x0, 0x1,

    // MP Core MailBox Set/Get/Clear Addresses and Clear Value
    (EFI_PHYSICAL_ADDRESS)0,
    (EFI_PHYSICAL_ADDRESS)0,
    (EFI_PHYSICAL_ADDRESS)0,
    (UINT64)0xFFFFFFFF
  },
  {
    // Cluster 0, Core 2
    0x0, 0x2,

    // MP Core MailBox Set/Get/Clear Addresses and Clear Value
    (EFI_PHYSICAL_ADDRESS)0,
    (EFI_PHYSICAL_ADDRESS)0,
    (EFI_PHYSICAL_ADDRESS)0,
    (UINT64)0xFFFFFFFF
  },
  {
    // Cluster 0, Core 3
    0x0, 0x3,

    // MP Core MailBox Set/Get/Clear Addresses and Clear Value
    (EFI_PHYSICAL_ADDRESS)0,
    (EFI_PHYSICAL_ADDRESS)0,
    (EFI_PHYSICAL_ADDRESS)0,
    (UINT64)0xFFFFFFFF
  }
};

// This function should be better located into TimerLib implementation
RETURN_STATUS
EFIAPI
TimerConstructor (
  VOID
  )
{
  return EFI_SUCCESS;
}

/**
  Remap the memory at 0x0

  Some platform requires or gives the ability to remap the memory at the address 0x0.
  This function can do nothing if this feature is not relevant to your platform.

**/
VOID
ArmPlatformBootRemapping (
  VOID
  )
{
  // Disable memory remapping and return to normal mapping
}

/**
  Return the current Boot Mode

  This function returns the boot reason on the platform

**/
EFI_BOOT_MODE
ArmPlatformGetBootMode (
  VOID
  )
{
  return BOOT_WITH_FULL_CONFIGURATION;
}

/**
  Initialize controllers that must setup in the normal world

  This function is called by the ArmPlatformPkg/PrePi or ArmPlatformPkg/PlatformPei
  in the PEI phase.

**/
VOID
ArmPlatformNormalInitialize (
  VOID
  )
{
  //TODO: Implement me
}

/**
  Initialize the system (or sometimes called permanent) memory

  This memory is generally represented by the DRAM.

**/
VOID
ArmPlatformInitializeSystemMemory (
  VOID
  )
{
  //TODO: Implement me
}

EFI_STATUS
PrePeiCoreGetMpCoreInfo (
  OUT UINTN                   *CoreCount,
  OUT ARM_CORE_INFO           **ArmCoreTable
  )
{
  if (ArmIsMpCore()) {
    *CoreCount    = sizeof(mArmPlatformNullMpCoreInfoTable) / sizeof(ARM_CORE_INFO);
    *ArmCoreTable = mArmPlatformNullMpCoreInfoTable;
    return EFI_SUCCESS;
  } else {
    return EFI_UNSUPPORTED;
  }
}

// Needs to be declared in the file. Otherwise gArmMpCoreInfoPpiGuid is undefined in the contect of PrePeiCore
EFI_GUID mArmMpCoreInfoPpiGuid = ARM_MP_CORE_INFO_PPI_GUID;
ARM_MP_CORE_INFO_PPI mMpCoreInfoPpi = { PrePeiCoreGetMpCoreInfo };

EFI_PEI_PPI_DESCRIPTOR      gPlatformPpiTable[] = {
  {
    EFI_PEI_PPI_DESCRIPTOR_PPI,
    &mArmMpCoreInfoPpiGuid,
    &mMpCoreInfoPpi
  }
};

VOID
ArmPlatformGetPlatformPpiList (
  OUT UINTN                   *PpiListSize,
  OUT EFI_PEI_PPI_DESCRIPTOR  **PpiList
  )
{
  if (ArmIsMpCore()) {
    *PpiListSize = sizeof(gPlatformPpiTable);
    *PpiList = gPlatformPpiTable;
  } else {
    *PpiListSize = 0;
    *PpiList = NULL;
  }
}