Subversion Repositories openrisc_2011-10-31

/*

 * SDRAM row test, for running on the board (with printfs)

 *

 * Tests accessing every row

 *

*/

#include "cpu-utils.h"

#include "board.h"

#include "sdram.h"

#include "uart.h"

#include "printf.h"

#ifndef _SDRAM_H_

#define _SDRAM_H_

#ifdef  MT48LC32M16A2 // 64MB SDRAM part

#define SDRAM_SIZE 0x04000000

#define SDRAM_ROW_SIZE 2048 // in bytes (10 bits col addr, 2 bytes per)

#define SDRAM_NUM_ROWS_PER_BANK (8192) // 13-bit row address

#define SDRAM_NUM_BANKS 4

#endif

#ifdef  MT48LC16M16A2 // 32MB SDRAM part

#define SDRAM_SIZE 0x02000000

#define SDRAM_ROW_SIZE 1024 // in bytes (9 bits col addr, 2 bytes per)

#define SDRAM_NUM_ROWS_PER_BANK (8192) // 13-bit row address

#define SDRAM_NUM_BANKS 4

#endif

#ifdef MT48LC4M16A2 // 8MB SDRAM part

#define SDRAM_SIZE 0x800000

#define SDRAM_ROW_SIZE 512 // in bytes (8 bits col addr, 2 bytes per)

#define SDRAM_NUM_ROWS_PER_BANK (4096) // 12-bit row address

#define SDRAM_NUM_BANKS 4

#endif

#endif

#define SDRAM_NUM_ROWS (SDRAM_NUM_ROWS_PER_BANK * SDRAM_NUM_BANKS)

#define START_ROW 128

int main()

{

  uart_init(DEFAULT_UART);

  printf("\n\tSDRAM rows test\n");

  printf("\n\tWriting\n");

  int i; // Skip first 64KB, code/stack resides there - TODO determine this from

  // stack linker variable!

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

    {

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

      printf("\r\t0x%x", i);

    }

  printf("\n\tReading\n");

  int read_result = 0;

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

    {

      printf("\r\t0x%x", i);

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

      if (read_result != i)

        {

          printf("\n\Error at 0x%x, read 0x%x, expected 0x%x\n",

                 (i*SDRAM_ROW_SIZE), read_result, i);

          report(0xbaaaaaad);

          report(i);

          report(read_result);

          exit(0xbaaaaaad);

        }

    }

  printf("\n\tTest OK.\n");

  exit(0x8000000d);

}