Subversion Repositories openrisc_2011-10-31

/*

 * SDRAM bank test

 *

 * Tests the extremeties of the SDRAM banks

 *

*/

#include "cpu-utils.h"

#include "board.h"

#include "sdram.h"

#define SDRAM_BANK_SIZE (SDRAM_SIZE / SDRAM_NUM_BANKS)

#define SDRAM_BANK_START(bank) ((SDRAM_BANK_SIZE*bank) + SDRAM_BASE)

#define SDRAM_BANK_LAST_WORD(bank) ((SDRAM_BANK_START((bank+1)))-4)

int main()

{

  report (SDRAM_SIZE);

  report (SDRAM_BANK_SIZE);

  report (SDRAM_BANK_START(0));

  report (SDRAM_BANK_LAST_WORD(0));

  report (SDRAM_BANK_START(1));

  report (SDRAM_BANK_LAST_WORD(1));

  report (SDRAM_BANK_START(2));

  report (SDRAM_BANK_LAST_WORD(2));

  report (SDRAM_BANK_START(3));

  report (SDRAM_BANK_LAST_WORD(3));

  REG32(SDRAM_BANK_LAST_WORD(0)) = 0x11111111;

  REG32(SDRAM_BANK_LAST_WORD(1)) = 0x22222222;

  REG32(SDRAM_BANK_LAST_WORD(2)) = 0x33333333;

  REG32(SDRAM_BANK_LAST_WORD(3)) = 0x44444444;

  unsigned long read_result = 0;

  read_result += REG32(SDRAM_BANK_LAST_WORD(0));

  read_result += REG32(SDRAM_BANK_LAST_WORD(1));

  read_result += REG32(SDRAM_BANK_LAST_WORD(2));

  read_result += REG32(SDRAM_BANK_LAST_WORD(3));

  exit((read_result-0x2aaaaa9d)); /* should result in 8000000d */

}