chipEraseM29W,
   writeWordM29W16
  },
  {
   M28W320CB,
   "M28W320CB",
   NULL,
   0x88BB88BB,
   1024 * 1024 * 8,
   0,
   M28W320CB_blockInfo,

   resetM29W,
   blockUnprotectCFI,
   blockEraseCFI,
   chipEraseSimple,
   writeWordCFI
  },
  {
   E28F640J3Ax16,
   "E28F640J3Ax16/M58LW064Ax16/MT28F640J3RGx16",
   NULL,
   0x00000017,
   1024 * 1024 * 8,
   0,
   E28F640J3A16_blockInfo,

   resetM58LW16,
   blockUnprotectCFI16,
   blockEraseCFI16,
   chipEraseSimple,
   writeWordCFI16
  },
  {
   E28F640J3A,
   "E28F640J3x/M58LW064x/MT28F640J3RG",
   NULL,
   0x00170017,
   1024 * 1024 * 16,
   0,
   E28F640J3A_blockInfo,

   resetM58LW,
   blockUnprotectCFI,
   blockEraseCFI,
   chipEraseSimple,
   writeWordCFI
  },
  {
   M58LW064Cx16,
   "M58LW064Cx16",
   NULL,
   0x00008820,
   1024 * 1024 * 8,
   0,
   M58LW064C_blockInfo,

   resetM58LW16,
   blockUnprotectCFI16,
   blockEraseCFI16,
   chipEraseSimple,
   writeWordCFI16
  },
  {
   M58LW032A,
   "M58LW032A",
   NULL,
   0x88168816,
   1024 * 1024 * 8,
   0,
   M58LW032A_blockInfo,

   resetM58LW,
   blockUnprotectCFI,
   blockEraseCFI,
   chipEraseSimple,
   writeWordCFI
  },
  {
   M29DW324DB,
   "M29DW324DB",
   NULL,
   0x225D225D,
   1024 * 1024 * 8,
   0,
   M29DW324DB_blockInfo,

   resetM29W,
   NULL,
   blockEraseM29W,
   chipEraseSimple,
   writeWordM29W
  },
  {
   M29DW324DBx16,
   "M29DW324DBx16",
   NULL,
   0x0000225D,
   1024 * 1024 * 4,
   0,
   M29DW324DB16_blockInfo,

   resetM29W16,
   NULL,
   blockEraseM29W16,
   chipEraseSimple,
   writeWordM29W16
  },
  {
   M29KW064E,
   "M29KW064E",
   NULL,
   0x000088AF,
   1024 * 1024 * 8,
   0,
   M29KW064E_blockInfo,

   resetM29W16,
   NULL,
   blockEraseM29W16,
   chipEraseSimple,
   writeWordM29W16
  },
  {
   M28W640FSUx16,
   "M28W640FSUx16",
   NULL,
   0x00008857,
   1024 * 1024 * 8,
   0,
   M28W640FSUx16_blockInfo,

   resetM58LW16,
   blockUnprotectCFI16,
   blockEraseCFI16,
   chipEraseSimple,
   writeWordCFI16
  },
    {
   S29GL064A,
   "S29GL064A",
   NULL,
   0x0000227e,
   1024 * 1024 * 8,
   0,
   M29W640DB_blockInfo /*M29W640DT_blockInfo*/,

   resetM29W16,
   NULL,
   blockEraseM29W16,
   chipEraseM29W,
   writeWordM29W16
  },

  {0}
};

/*
 * Our supported boards
 */
static flashTarget_t supportedTargets[] = {
#if defined(__st200__)
#if defined(__stm8000__)
  {"mb379", 2, writeEnable_mb379, writeDisable_mb379, NULL, NULL},
  {"mb392", 1, writeEnable_mb392, writeDisable_mb392, NULL, NULL},
#elif defined(__stb5301__)
  {"mb390", 1, writeEnable_mb390, writeDisable_mb390, NULL, NULL},
  {"mb424", 1, NULL, NULL, NULL, NULL},
  {"mb435", 1, NULL, NULL, NULL, NULL},
#elif defined(__stm8010__)
  {"mb421", 1, writeEnable_mb421, writeDisable_mb421, NULL, NULL},
  {"mb426", 1, writeEnable_mb426, writeDisable_mb426, NULL, NULL},
#elif defined(__stx5525__)
  {"mb428", 1, NULL, NULL, switchOnVDD_mb428, switchOffVDD_mb428},
#endif
#else
#if defined(__st40ra__)
  {"db457", 2, NULL, NULL, NULL, NULL},
  {"mb293", 2, writeEnable_mb293, writeDisable_mb293, NULL, NULL},
  {"mb350", 2, writeEnable_mb293, writeDisable_mb293, NULL, NULL},
  {"mb360", 1, NULL, NULL, NULL, NULL},
  {"mb374", 2, writeEnable_mb374, writeDisable_mb374, NULL, NULL},
#elif defined(__st40gx1__)
  {"mb317a", 1, NULL, NULL, switchOnVDD_mb317, switchOffVDD_mb317},
  {"mb317b", 1, NULL, NULL, switchOnVDD_mb317, switchOffVDD_mb317},
  {"mediaref", 1, NULL, NULL, NULL, NULL},
#elif defined(__sti5528__)
  {"espresso", 1, NULL, NULL, NULL, NULL},
  {"mb376", 1, writeEnable_mb376, writeDisable_mb376, switchOnVDD_mb376, switchOffVDD_mb376},
#elif defined(__stm8000__)
  {"mb379", 2, writeEnable_mb379, writeDisable_mb379, NULL, NULL},
  {"mb392", 1, writeEnable_mb392, writeDisable_mb392, NULL, NULL},
  {"tmmidr04", 1, writeEnable_tmmidr04, writeDisable_tmmidr04, NULL, NULL},
  {"tmmlr1", 1, writeEnable_tmmidr04, writeDisable_tmmidr04, NULL, NULL},
  {"tmmlr2", 1, writeEnable_tmmlr2, writeDisable_tmmlr2, NULL, NULL},
#elif defined(__stb7100__)
  {"mb411", 1, writeEnable_mb411, writeDisable_mb411, NULL, NULL},
  {"mb411stb7100", 1, writeEnable_mb411, writeDisable_mb411, NULL, NULL},
  {"mb442", 1, NULL, NULL, NULL, NULL},
  {"mb442stb7100", 1, NULL, NULL, NULL, NULL},
  {"stb7100ref", 1, NULL, NULL, NULL, NULL},
#elif defined(__stb7109__)
  {"mb411stb7109", 1, writeEnable_mb411, writeDisable_mb411, NULL, NULL},
  {"mb442stb7109", 1, NULL, NULL, NULL, NULL},
  {"mb448", 1, NULL, NULL, NULL, NULL},
#elif defined(__sti7200__)
  {"mb519", 1, writeEnable_mb519, writeDisable_mb519, NULL, NULL},
#elif defined(__stv0498__)
  {"mb521", 1, NULL, NULL, NULL, NULL},
#elif defined(__std1000__)
  {"mb548", 1, NULL, NULL, NULL, NULL},
#elif defined(__std2000__)
  {"mb422", 1, NULL, NULL, NULL, NULL},
#endif
#endif
  {0}
};

/*
 * Routine to dump a FLASH block map file to a given FILE*
 * Note that this file format doesn't cope with any gaps between FLASH chips in
 * the address map.
 */
void dumpBlockMap(flashDevice_t** devices, FILE* fp)
{
  int i, j;
  unsigned int lastAddr = 0;
  for (i = 0; devices[i]; i++)
  {
    fprintf(fp, "# FLASH block layout for %s FLASH chip\n", devices[i]->deviceName);
    lastAddr = devices[i]->baseAddress;
    for (j = 0; devices[i]->blockInfo[j].offset != 0; j++)
    {
      fprintf(fp, "0x%08x, 0x%08x\n", lastAddr, devices[i]->blockInfo[j].size);
      lastAddr = devices[i]->baseAddress + devices[i]->blockInfo[j].offset;
    }
  }
  fprintf(fp, "0x%08x, 0x%08x ## End of FLASH\n", lastAddr, 0);
}

/*
 * Routine to show progress of an operation.
 * Calls back to user supplied hook.
 */
static void showProgress(flashProgress_t progressFn, unsigned int done, unsigned int total)
{
  if (progressFn)
  {
    progressFn(done, total);
  }
}

/*
 * Routine to perform a FLASH reset
 */
static void reset(flashDevice_t* device)
{
  if (device->reset)
  {
    device->reset(device);
  }
}

/*
 * Routine to unprotect a block of FLASH
 */
static void blockUnprotect(flashDevice_t* device, unsigned int blockAddress)
{
  if (device->blockUnprotect)
  {
    device->blockUnprotect(device, blockAddress);
  }
}

/*
 * Routine to put the FLASH back into read mode.
 * Using 16 bit accesses
 */
static void resetM58LT16(flashDevice_t* device)
{
  volatile unsigned short* commandPtr;
  int n;

  commandPtr = (volatile unsigned short*)physToUncachedFlashAddr(device->baseAddress);

  /* The M58LT has 16 internal banks and we reset all of them */
  for (n = 0; n < 16; n++)
  {
    *commandPtr = CMD_READ_ARRAY16;
    commandPtr += (device->bankSize / 16) / sizeof(*commandPtr);
  }

  task_delay(PAUSE_PERIOD);
}

/*
 * Routine to put the FLASH back into read mode.
 */
static void resetM58LW(flashDevice_t* device)
{
  volatile unsigned int* commandPtr;

  commandPtr = (volatile unsigned int*)physToUncachedFlashAddr(device->baseAddress);

  *commandPtr = CMD_READ_ARRAY;

  task_delay(PAUSE_PERIOD);
}

/*
 * Routine to put the FLASH back into read mode.
 * Using 16 bit accesses
 */
static void resetM58LW16(flashDevice_t* device)
{
  volatile unsigned short* commandPtr;

  commandPtr = (volatile unsigned short*)physToUncachedFlashAddr(device->baseAddress);

  *commandPtr = CMD_READ_ARRAY16;

  task_delay(PAUSE_PERIOD);
}

/*
 * Routine to put the FLASH back into read mode.
 */
static void resetM29W(flashDevice_t* device)
{
  volatile unsigned int* commandPtr1;
  volatile unsigned int* commandPtr2;

  commandPtr1 = (volatile unsigned int*)physToUncachedFlashAddr(device->baseAddress + 0x1554);
  commandPtr2 = (volatile unsigned int*)physToUncachedFlashAddr(device->baseAddress + 0x2AA8);

  *commandPtr1 = 0x00AA00AA;
  *commandPtr2 = 0x00550055;
  *commandPtr1 = 0x00F000F0;

  task_delay(PAUSE_PERIOD);
}

/*
 * Routine to put the FLASH back into read mode. (16 bit version)
 */
static void resetM29W16(flashDevice_t* device)
{
  volatile unsigned short* commandPtr1;
  volatile unsigned short* commandPtr2;
  commandPtr1 = (volatile unsigned short*)physToUncachedFlashAddr(device->baseAddress + 0x1554);
  commandPtr2 = (volatile unsigned short*)physToUncachedFlashAddr(device->baseAddress + 0x2AA8);

  *commandPtr1 = 0x00AA;
  *commandPtr2 = 0x0055;
  *commandPtr1 = 0x00F0;

  task_delay(PAUSE_PERIOD);
}

/*
 * Routine to write a word of data to an M29W type of FLASH
 */
static void writeWordM29W(flashDevice_t* device, unsigned int address, unsigned int value)
{
  volatile unsigned int* command1Ptr;
  volatile unsigned int* command2Ptr;
  volatile unsigned int* dataPtr;
  osclock_t endTime;

  /* Don't bother writing words which are the default erased value */
  if (value == 0xFFFFFFFF)
    return;

  command1Ptr = (volatile unsigned int*)physToUncachedFlashAddr(device->baseAddress + 0x1554);
  command2Ptr = (volatile unsigned int*)physToUncachedFlashAddr(device->baseAddress + 0x2AA8);
  dataPtr = (volatile unsigned int*)physToUncachedFlashAddr(address);

  /*
   * Write flash-unlock sequence to device
   */
  *command1Ptr = 0x00AA00AA;
  *command2Ptr = 0x00550055;
  *command1Ptr = 0x00A000A0;
  *dataPtr = value;

  /*
   * Poll the FLASH to wait for the value to stabilise
   */
  endTime = time_plus(time_now(), time_ticks_per_sec() * WRITE_TIMEOUT);

  while ((*dataPtr != value) && !time_after(time_now(), endTime))
  {
  }

  if (*dataPtr != value)
  {
    fprintf(stderr, "\nError writing to %s @ 0x%08x\n", device->deviceName, address);
    fprintf(stderr, "\nWrote %08x, read %08x\n", value, *dataPtr);
    exit(1);
  }
}

/*
 * Routine to write a word of data to an M29W type of FLASH
 */
static void writeM29W16(flashDevice_t* device, unsigned int address, unsigned short value)
{
  volatile unsigned short* command1Ptr;
  volatile unsigned short* command2Ptr;
  volatile unsigned short* dataPtr;
  osclock_t endTime;

  command1Ptr = (volatile unsigned short*)physToUncachedFlashAddr(device->baseAddress + 0xAAA);
  command2Ptr = (volatile unsigned short*)physToUncachedFlashAddr(device->baseAddress + 0x554);
  dataPtr = (volatile unsigned short*)physToUncachedFlashAddr(address);

  /*
   * Write flash-unlock sequence to device
   */
  *command1Ptr = 0x00AA;
  *command2Ptr = 0x0055;
  *command1Ptr = 0x00A0;
  *dataPtr = value;

  /*
   * Poll the FLASH to wait for the value to stabilise
   */
  endTime = time_plus(time_now(), time_ticks_per_sec() * WRITE_TIMEOUT);

  while ((*dataPtr != value) && !time_after(time_now(), endTime))
  {
  }

  if (*dataPtr != value)
  {
    fprintf(stderr, "\nError writing to %s @ 0x%08x\n", device->deviceName, address);
    fprintf(stderr, "\nWrote %04x, read %04x\n", value, *dataPtr);
    exit(1);
  }
}

static void writeWordM29W16(flashDevice_t* device, unsigned int address, unsigned int value)
{
  /* Don't bother writing words which are the default erased value */
  if (value == 0xFFFFFFFF)
    return;

  writeM29W16(device, address + 2, (unsigned short)((value >> 16)));
  writeM29W16(device, address, (unsigned short)(value & 0xFFFF));
}

/*
 * Routine to write a 32-bit word of data to a CFI device
 */
static void writeWordCFI(flashDevice_t* device, unsigned int address, unsigned int value)
{
  volatile unsigned int* dataPtr;
  osclock_t endTime;

  /* Don't bother writing words which are the default erased value */
  if (value == 0xFFFFFFFF)
    return;

  dataPtr = (volatile unsigned int*)physToUncachedFlashAddr(address);