Subversion Repositories eco32

/*

 * main.c -- ECO32 memory test

 */

#include "types.h"

#include "stdarg.h"

#include "iolib.h"

#define K               1024

#define M               (K * K)

#define MEM_ADDR        ((void *) (0xC0000000 + 0x10000 + 0x3000))

#define MEM_SIZE        (32 * M - (0x10000 + 0x3000))

#define PASSES          3

/**************************************************************/

unsigned int randomNumber;

void setRandomNumber(unsigned int seed) {

  randomNumber = seed;

}

unsigned int getRandomNumber(void) {

  randomNumber = randomNumber * (unsigned) 1103515245 + (unsigned) 12345;

  return randomNumber;

}

/**************************************************************/

void writeWords(void *start,

                unsigned int numWords,

                unsigned int seed) {

  unsigned int *addr;

  unsigned int rn;

  setRandomNumber(seed);

  addr = (unsigned int *) start;

  while (numWords -= 1) {

    rn = getRandomNumber();

    *addr++ = rn;

  }

}

void writeHalfs(void *start,

                unsigned int numHalfs,

                unsigned int seed) {

  unsigned short *addr;

  unsigned int rn;

  setRandomNumber(seed);

  addr = (unsigned short *) start;

  while (numHalfs -= 2) {

    rn = getRandomNumber();

    *addr++ = (rn >> 16) & 0x0000FFFF;

    *addr++ = (rn >>  0) & 0x0000FFFF;

  }

}

void writeBytes(void *start,

                unsigned int numBytes,

                unsigned int seed) {

  unsigned char *addr;

  unsigned int rn;

  setRandomNumber(seed);

  addr = (unsigned char *) start;

  while (numBytes -= 4) {

    rn = getRandomNumber();

    *addr++ = (rn >> 24) & 0x000000FF;

    *addr++ = (rn >> 16) & 0x000000FF;

    *addr++ = (rn >>  8) & 0x000000FF;

    *addr++ = (rn >>  0) & 0x000000FF;

  }

}

unsigned int readWords(void *start,

                       unsigned int numWords,

                       unsigned int seed) {

  unsigned int errors;

  unsigned int *addr;

  unsigned int rn;

  errors = 0;

  setRandomNumber(seed);

  addr = (unsigned int *) start;

  while (numWords -= 1) {

    rn = getRandomNumber();

    if (*addr++ != rn) {

      errors++;

    }

  }

  return errors;

}

unsigned int readHalfs(void *start,

                       unsigned int numHalfs,

                       unsigned int seed) {

  unsigned int errors;

  unsigned short *addr;

  unsigned int rn;

  errors = 0;

  setRandomNumber(seed);

  addr = (unsigned short *) start;

  while (numHalfs -= 2) {

    rn = getRandomNumber();

    if (*addr++ != ((rn >> 16) & 0x0000FFFF)) {

      errors++;

    }

    if (*addr++ != ((rn >>  0) & 0x0000FFFF)) {

      errors++;

    }

  }

  return errors;

}

unsigned int readBytes(void *start,

                       unsigned int numBytes,

                       unsigned int seed) {

  unsigned int errors;

  unsigned char *addr;

  unsigned int rn;

  errors = 0;

  setRandomNumber(seed);

  addr = (unsigned char *) start;

  while (numBytes -= 4) {

    rn = getRandomNumber();

    if (*addr++ != ((rn >> 24) & 0x000000FF)) {

      errors++;

    }

    if (*addr++ != ((rn >> 16) & 0x000000FF)) {

      errors++;

    }

    if (*addr++ != ((rn >>  8) & 0x000000FF)) {

      errors++;

    }

    if (*addr++ != ((rn >>  0) & 0x000000FF)) {

      errors++;

    }

  }

  return errors;

}

/**************************************************************/

void memtest(void *start, unsigned int size, int passes) {

  int i;

  int j;

  unsigned int seed;

  setRandomNumber(10007);

  for (i = 1; i <= passes; i++) {

    printf("Pass %d\n", i);

    /* -------------------- */

    printf("  writing words...\n");

    for (j = 0; j < i; j++) {

      getRandomNumber();

    }

    seed = getRandomNumber();

    writeWords(start, size / 4, seed);

    printf("    reading words: ");

    printf("%d", readWords(start, size / 4, seed));

    printf(" errors\n");

    printf("    reading halfs: ");

    printf("%d", readHalfs(start, size / 2, seed));

    printf(" errors\n");

    printf("    reading bytes: ");

    printf("%d", readBytes(start, size / 1, seed));

    printf(" errors\n");

    /* -------------------- */

    printf("  writing halfs...\n");

    for (j = 0; j < i; j++) {

      getRandomNumber();

    }

    seed = getRandomNumber();

    writeHalfs(start, size / 2, seed);

    printf("    reading words: ");

    printf("%d", readWords(start, size / 4, seed));

    printf(" errors\n");

    printf("    reading halfs: ");

    printf("%d", readHalfs(start, size / 2, seed));

    printf(" errors\n");

    printf("    reading bytes: ");

    printf("%d", readBytes(start, size / 1, seed));

    printf(" errors\n");

    /* -------------------- */

    printf("  writing bytes...\n");

    for (j = 0; j < i; j++) {

      getRandomNumber();

    }

    seed = getRandomNumber();

    writeBytes(start, size / 1, seed);

    printf("    reading words: ");

    printf("%d", readWords(start, size / 4, seed));

    printf(" errors\n");

    printf("    reading halfs: ");

    printf("%d", readHalfs(start, size / 2, seed));

    printf(" errors\n");

    printf("    reading bytes: ");

    printf("%d", readBytes(start, size / 1, seed));

    printf(" errors\n");

  }

}

/**************************************************************/

int main(void) {

  printf("\nECO32 memory test started\n\n");

  memtest(MEM_ADDR, MEM_SIZE, PASSES);

  printf("\nECO32 memory test finished\n");

  return 0;

}