src/vendorcode/amd/cimx/sb900/MemLib.c

/*;********************************************************************************
;
; Copyright (c) 2011, Advanced Micro Devices, Inc.
; All rights reserved.
; 
; Redistribution and use in source and binary forms, with or without
; modification, are permitted provided that the following conditions are met:
;     * Redistributions of source code must retain the above copyright
;       notice, this list of conditions and the following disclaimer.
;     * Redistributions in binary form must reproduce the above copyright
;       notice, this list of conditions and the following disclaimer in the
;       documentation and/or other materials provided with the distribution.
;     * Neither the name of Advanced Micro Devices, Inc. nor the names of 
;       its contributors may be used to endorse or promote products derived 
;       from this software without specific prior written permission.
; 
; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
; ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
; WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
; DISCLAIMED. IN NO EVENT SHALL ADVANCED MICRO DEVICES, INC. BE LIABLE FOR ANY
; DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
; (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
; ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
; SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
; 
;*********************************************************************************/

#include "SbPlatform.h"
#include "cbtypes.h"

VOID
ReadMEM (
  IN       UINT32 Address,
  IN       UINT8 OpFlag,
  IN       VOID* Value
  )
{
  OpFlag = OpFlag & 0x7f;
  switch ( OpFlag ) {
  case AccWidthUint8:
    *((UINT8*)Value) = *((UINT8*) ((UINTN)Address));
    break;
  case AccWidthUint16:
    *((UINT16*)Value) = *((UINT16*) ((UINTN)Address));
    break;
  case AccWidthUint32:
    *((UINT32*)Value) = *((UINT32*) ((UINTN)Address));
    break;
  default:
    break;
  }
}

VOID
WriteMEM (
  IN       UINT32 Address,
  IN       UINT8 OpFlag,
  IN       VOID* Value
  )
{
  OpFlag = OpFlag & 0x7f;
  switch ( OpFlag ) {
  case AccWidthUint8 :
    *((UINT8*) ((UINTN)Address)) = *((UINT8*)Value);
    break;
  case AccWidthUint16:
    *((UINT16*) ((UINTN)Address)) = *((UINT16*)Value);
    break;
  case AccWidthUint32:
    *((UINT32*) ((UINTN)Address)) = *((UINT32*)Value);
    break;
  default:
    break;
  }
}

VOID
RWMEM (
  IN       UINT32 Address,
  IN       UINT8 OpFlag,
  IN       UINT32 Mask,
  IN       UINT32 Data
  )
{
  UINT32 Result;
  ReadMEM (Address, OpFlag, &Result);
  Result = (Result & Mask) | Data;
  WriteMEM (Address, OpFlag, &Result);
}