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;
}