Subversion Repositories openrisc_2011-10-31

/*

 * SDRAM column test

 *

 * Tests accessing beginning and middle of column. Should detect any mismatch

 * between SDRAM row size configuration.

 *

*/

#include "cpu-utils.h"

#include "board.h"

#include "sdram.h"

// Start some rows after the program/data

#define STACK_AT (128*1024)

#define START_ROW  ((STACK_AT/SDRAM_ROW_SIZE)+1)

// For a short test, set the following to 1

#define SHORT_TEST 0

#if SHORT_TEST==1

# define SDRAM_NUM_ROWS (START_ROW + 512)

#else

# define SDRAM_NUM_ROWS (SDRAM_NUM_ROWS_PER_BANK * SDRAM_NUM_BANKS)

#endif

#define SDRAM_ROW_BEGINNING 0

#define SDRAM_ROW_MIDDLE (SDRAM_ROW_SIZE/2)

int main()

{

  int i; // Skip first 64KB, code/stack resides there

  for(i=START_ROW;i<(SDRAM_NUM_ROWS);i++)

    {

      REG32((i*(SDRAM_ROW_SIZE))+SDRAM_ROW_BEGINNING) = i;

      REG32((i*(SDRAM_ROW_SIZE))+SDRAM_ROW_MIDDLE) = ~i;

    }

  int read_result = 0;

  int read_result_inv = 0;

  for(i=START_ROW;i<(SDRAM_NUM_ROWS);i++)

    {

      read_result = REG32((i*(SDRAM_ROW_SIZE))+SDRAM_ROW_BEGINNING);

      read_result_inv = REG32((i*(SDRAM_ROW_SIZE))+SDRAM_ROW_MIDDLE);

      if ((read_result != i) || (read_result_inv != ~i))

        {

          report(0xbaaaaaad);

          report(i);

          report(read_result);

          exit(0xbaaaaaad);

        }

    }

  exit(0x8000000d);

}