sdram_test.c File Reference

#include "sdram.h"
#include "mt481c2m32b2tg.h"

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Defines
#define	STK1000_SDRAM_BASE   0xB0000000
Functions
int	main (void)

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Define Documentation

#define STK1000_SDRAM_BASE   0xB0000000

Definition at line 39 of file sdram_test.c.

Referenced by main().

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Function Documentation

int main

(

void

)

This function will setup the the SDRAM controller, intialize the SDRAM found on the STK1000 and test it.

Returns:

The number of errors

Definition at line 45 of file sdram_test.c.

References sdram_info::banks, sdram_info::cas, sdram_info::cols, mt481c2m32b2tg_banks, mt481c2m32b2tg_cas, mt481c2m32b2tg_cols, mt481c2m32b2tg_init(), mt481c2m32b2tg_rows, mt481c2m32b2tg_tras, mt481c2m32b2tg_trc, mt481c2m32b2tg_trcd, mt481c2m32b2tg_trp, mt481c2m32b2tg_twr, mt481c2m32b2tg_txsr, sdram_info::physical_address, sdram_info::rows, sdramc_init(), STK1000_SDRAM_BASE, sdram_info::tras, sdram_info::trc, sdram_info::trcd, sdram_info::trp, sdram_info::twr, and sdram_info::txsr.

{
  static sdram_info *info;
  unsigned long sdram_size, tmp, i;
  int noErrors=0;
  volatile unsigned long *sdram = (void *) STK1000_SDRAM_BASE;

  info->physical_address = STK1000_SDRAM_BASE;
  info->cols = mt481c2m32b2tg_cols;
  info->rows = mt481c2m32b2tg_rows;
  info->banks = mt481c2m32b2tg_banks;
  info->cas = mt481c2m32b2tg_cas;
  info->twr = mt481c2m32b2tg_twr;
  info->trc = mt481c2m32b2tg_trc;
  info->trp = mt481c2m32b2tg_trp;
  info->trcd = mt481c2m32b2tg_trcd;
  info->tras = mt481c2m32b2tg_tras;
  info->txsr = mt481c2m32b2tg_txsr;

  /* Calculate sdram size */
  sdram_size = 1 << (info->rows + info->cols + info->banks + 2);

  /* initialize the avr32 sdram controller */
  sdramc_init(info);

  /* initialize the external sdram chip */
  mt481c2m32b2tg_init(info);

  /* test the chip */
  for (i = 0; i < sdram_size; i++){
    sdram[i] = i;
    tmp = sdram[i];
    if (tmp != i) {
      noErrors++;
    }
  }

  return noErrors;
}

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