Subversion Repositories openrisc_2011-10-31

#include "common.h"
#include "support.h"
#include "spr-defs.h"
#include "spincursor.h"
 
void show_mem (int start, int stop)
{
  unsigned long i = start;
  if ((i & 0xf) != 0x0) printf ("\n%08lx: ", i);
  for(; i <= stop; i += 4) {
    if ((i & 0xf) == 0x0) printf ("\n%08lx: ", i);
    /* Read one word */
    printf ("%08lx ", REG32(i));
  }
  printf ("\n");
}
 
void testram (unsigned long start_addr, unsigned long stop_addr, unsigned long testno)
{
  unsigned long addr;
  unsigned long err_addr = 0;
  unsigned long err_no = 0;
 
  /* Test 1: Write locations with their addresses */
  if ((testno == 1) || (testno == 0)) {
    printf ("\n1. Writing locations with their addresses: ");
    for (addr = start_addr; addr <= stop_addr; addr += 4)
      REG32(addr) = addr;
 
    /* Verify */
    for (addr = start_addr; addr <= stop_addr; addr += 4)
      if (REG32(addr) != addr) {
        err_no++;
        err_addr = addr;
      }
    if (err_no) printf ("%04lx times failed. Last at location %08lx", err_no, err_addr);
    else printf ("Passed");
    err_no = 0;
  }
 
  /* Test 2: Write locations with their inverse address */
  if ((testno == 2) || (testno == 0)) {
    printf ("\n2. Writing locations with their inverse addresses: "); 
    for (addr = start_addr; addr <= stop_addr; addr += 4)
      REG32(addr) = ~addr;
 
    /* Verify */
    for (addr = start_addr; addr <= stop_addr; addr += 4)
      if (REG32(addr) != ~addr) {
        err_no++;
        err_addr = addr;
      }
    if (err_no) printf ("%04lx times failed. Last at location %08lx", err_no, err_addr);
    else printf ("Passed");
    err_no = 0;
  }
 
  /* Test 3: Write locations with walking ones */
  if ((testno == 3) || (testno == 0)) {
    printf ("\n3. Writing locations with walking ones: ");
    for (addr = start_addr; addr <= stop_addr; addr += 4)
      REG32(addr) = 1 << (addr >> 2);
 
    /* Verify */
    for (addr = start_addr; addr <= stop_addr; addr += 4)
      if (REG32(addr) != (1 << (addr >> 2))) {
        err_no++;
        err_addr = addr;
      }
    if (err_no) printf ("%04lx times failed. Last at location %08lx", err_no, err_addr);
    else printf ("Passed");
    err_no = 0;
  }
 
  /* Test 4: Write locations with walking zeros */
  if ((testno == 4) || (testno == 0)) {
    printf ("\n4. Writing locations with walking zeros: ");
    for (addr = start_addr; addr <= stop_addr; addr += 4)
      REG32(addr) = ~(1 << (addr >> 2));
 
    /* Verify */
    for (addr = start_addr; addr <= stop_addr; addr += 4)
      if (REG32(addr) != ~(1 << (addr >> 2))) {
        err_no++;
        err_addr = addr;
      }
    if (err_no) printf ("%04lx times failed. Last at location %08lx", err_no, err_addr);
    else printf ("Passed");
    err_no = 0;
  }
}
 
 
// Do proper walking 0 as byte writes
void better_ram_test (unsigned long start_addr, unsigned long stop_addr, unsigned test_no )
{
  unsigned long addr;
  unsigned long err_addr = 0;
  unsigned long err_no = 0;
  int b;
  printf ("\nSetting memory contents to all 1'b1  ");
  //enable_spincursor();
  for (addr = start_addr; addr <= stop_addr; addr += 1)
    REG8(addr) = 0xff;
  //disable_spincursor();
  printf ("\rVerifying memory contents all set to 1'b1:  ");
  //enable_spincursor();
  /* Verify */
  for (addr = start_addr; addr <= stop_addr; addr += 1)
    {
      if (REG8(addr) != 0xff) {
	err_no++;
	err_addr = addr;
	//disable_spincursor();
	printf ("\n%04lx times failed. Last at location %08lx  ", 
		err_no, err_addr);
	//enable_spincursor();
      }
    }
 
  if (err_no==0)
    printf ("Passed");
  else 
    printf ("Finished");
 
  err_no = 0;
 
  printf ("\nWalking zero through memory, verify just itself: "); 
  for (addr = start_addr; addr <= stop_addr; addr += 1)
    {
      for(b=0;b<8;b++)
	{
	  // Write, verify
	  REG8(addr) = ~(1<<b);
 
	  if (REG8(addr) != ~(1<<b))
	    {
	      err_no++;
	      err_addr = addr;
	      printf ("\n%04lx times failed. Last at location %08lx", err_no, err_addr);
	    }
	  REG8(addr) = 0xff;
	}
    }
  if (err_no == 0)  
    printf ("Passed");
  else 
    printf ("Finished");  
  err_no = 0;
 
  printf ("\nWriting across rows, row size configured as %d bytes",SDRAM_ROW_SIZE); 
  unsigned long start_row = start_addr / SDRAM_ROW_SIZE;
  unsigned long end_row = stop_addr / SDRAM_ROW_SIZE;
  for (addr = start_row; addr <= end_row; addr += 1)
    {
      REG32(addr*SDRAM_ROW_SIZE) = addr;      
    }
 
  printf ("\rVerifying row write test: "); 
 
  for (addr = start_row; addr <= end_row; addr += 1)
    {
      if (REG32(addr*SDRAM_ROW_SIZE) != addr)
	{
	  err_no++;
	  err_addr = addr*SDRAM_ROW_SIZE;
	  printf ("\n%04lx times failed. Last at location %08lx (row %d)", err_no, err_addr, addr);
	}
    }
 
  if (err_no == 0)  
    printf ("Passed");
  else 
    printf ("Finished");  
  err_no = 0;
 
}
 
 
int dm_cmd (int argc, char *argv[])
{
  unsigned long a1,a2;
  a1 = strtoul(argv[0], 0, 0);
  switch (argc) {
    case 1: show_mem (a1, a1); return 0;
    case 2: 
      a2 = strtoul(argv[1], 0, 0);
      show_mem (a1, a2); return 0;
    default: return -1;
  }
}
 
int pm_cmd (int argc, char *argv[])
{
  unsigned long addr, stop_addr, value;
  if ((argc == 3) || (argc == 2)) {
    addr = strtoul (argv[0], 0, 0);
 
    if (argc == 2) {
      stop_addr = strtoul (argv[0], 0, 0);
      value = strtoul (argv[1], 0, 0);
    } else {
      stop_addr = strtoul (argv[1], 0, 0);
      value = strtoul (argv[2], 0, 0);
    }
 
    for (; addr <= stop_addr; addr += 4) REG32(addr) = value;
 
    /*show_mem(strtoul (argv[0], 0, 0), stop_addr);*/
  } else return -1;
  return 0;
}
 
int ram_test_cmd (int argc, char *argv[])
{
  switch (argc) {
    case 2: testram(strtoul (argv[0], 0, 0), strtoul (argv[1], 0, 0), 0); return 0;
    case 3: testram(strtoul (argv[0], 0, 0), strtoul (argv[1], 0, 0), strtoul (argv[2], 0, 0)); return 0;
    default: return -1;
  }
}
 
int better_ram_test_cmd (int argc, char *argv[])
{
  if (argc < 2)
    return -1;
 
  better_ram_test(strtoul (argv[0], 0, 0), strtoul (argv[1], 0, 0), 0); 
  return 0;
}
 
unsigned long crc32 (unsigned long crc, const unsigned char *buf, unsigned long len)
{
  /* Create bitwise CRC table first */
  unsigned long crc_table[256];
  int i, k;
  for (i = 0; i < 256; i++) {
    unsigned long c = (unsigned long)i;
    for (k = 0; k < 8; k++) c = c & 1 ? 0xedb88320 ^ (c >> 1) : c >> 1;
    crc_table[i] = c;
  }
 
  /* Calculate crc on buf */
  crc = crc ^ 0xffffffffL;
  while (len--) crc = crc_table[((int)crc ^ (*buf++)) & 0xff] ^ (crc >> 8);
  return crc ^ 0xffffffffL;
}
 
int crc_cmd (int argc, char *argv[])
{
  unsigned long addr = global.src_addr;
  unsigned long len = global.length;
  unsigned long init_crc = 0;
 
  switch (argc) {
    case 3: init_crc = strtoul (argv[2], 0, 0);
    case 2: len = strtoul (argv[1], 0, 0);
    case 1: addr = strtoul (argv[0], 0, 0);
    case 0:
      printf ("CRC [%08lx-%08lx] = %08lx\n", addr, addr + len - 1, crc32 (init_crc, (unsigned char *)addr, len));
      return 0;
  }
  return -1;
}
 
void module_memory_init (void)
{
  register_command ("dm", "<start addr> [<end addr>]", "display 32-bit memory location(s)", dm_cmd);
  register_command ("pm", "<addr> [<stop_addr>] <value>", "patch 32-bit memory location(s)", pm_cmd);
  register_command ("ram_test", "<start_addr> <stop_addr> [<test_no>]", "run a simple RAM test", ram_test_cmd); 
  register_command ("better_ram_test", "<start_addr> <stop_addr>", "run a better RAM test", better_ram_test_cmd); 
 
  register_command ("crc", "[<src_addr> [<length> [<init_crc>]]]", "Calculates a 32-bit CRC on specified memory region", crc_cmd);
}