fpga.c

OMAP1030 处理器的ARM 侧硬件测试代码 OMAP1030 是TI的双核处理器

/*
===============================================================================
            TEXAS INSTRUMENTS INCORPORATED PROPRIETARY INFORMATION

   Property of Texas Instruments
   For  Unrestricted  Internal  Use  Only
   Unauthorized reproduction and/or distribution is strictly prohibited.
   This product is protected under copyright law and trade secret law
   as an unpublished work.
   Created 1999, (C) Copyright 1999 Texas Instruments.  All rights reserved.

   Filename             : fpga.c

   Description          : Header file for fpga board access functions

===============================================================================
*/


#include "fpga.h"

//for OMAP1510TEB
#ifdef APEX
//-----------------------------------------------------------------------------
//                         FPGA_RevisionRead
//-----------------------------------------------------------------------------
UWORD16 FPGA_RevisionRead(void)
{
  return(*(REGISTER_UWORD16*)FPGA_ELPD_REVISION_ADDR);
}



//-----------------------------------------------------------------------------
//                          FPGA_Write(UWORD16 value)
//-----------------------------------------------------------------------------
void FPGA_Write(UWORD32 reg_add, UWORD16 reg_mask, UWORD16 reg_value)
{
 UWORD16 idx_location, value, registre;

  idx_location = reg_mask;
  value = (UWORD16)reg_value;
  registre= *(REGISTER_UWORD16*)reg_add;

  while((idx_location & 0x0001) == 0)
    {
      idx_location >>= 1;
      value <<= 1;
    }
 registre  &= ~reg_mask;
 registre |= ((UWORD16)value & reg_mask);
 *(REGISTER_UWORD16*)reg_add = registre;
}
//
//-----------------------------------------------------------------------------
//                         FPGA_Read
//-----------------------------------------------------------------------------
UWORD16 FPGA_Read(UWORD32 reg_add)
{
return (*(UWORD16*)reg_add);
}
#else
//for HELENDCEVM

//-----------------------------------------------------------------------------
//                          FPGA_Write(UWORD16 value)
//-----------------------------------------------------------------------------
void FPGA_Write(UWORD16 reg_mask, UWORD16 value)
{
// Notes regsiter fpga value is read only
// so reg_value represent its value
static UWORD16 reg_value = DEFAULT_REGISTER_FPGA_VALUE;
UWORD16 idx_location;

  idx_location = reg_mask;
  // shift value to write according to mask
  while((idx_location & 0x0001) == 0)
    {
      idx_location >>= 1;
      value <<= 1;
    }
 reg_value  &= ~reg_mask;
 reg_value |= ((UWORD16)value & reg_mask);
 FPGA_REG = reg_value;
}
//
//-----------------------------------------------------------------------------
//                         FPGA_Read
//-----------------------------------------------------------------------------
UWORD16 FPGA_Read(void)
{
return(FPGA_REG);
}

#endif