static int get_lpc2000_part_id(struct flash_bank *bank, uint32_t *part_id)
{
if (bank->target->state != TARGET_HALTED) {
LOG_ERROR("Target not halted");
return ERROR_TARGET_NOT_HALTED;
}
uint32_t param_table[5] = {0};
uint32_t result_table[4];
struct working_area *iap_working_area;
int retval = lpc2000_iap_working_area_init(bank, &iap_working_area);
if (retval != ERROR_OK)
return retval;
/* The status seems to be bogus with the part ID command on some IAP
firmwares, so ignore it. */
lpc2000_iap_call(bank, iap_working_area, 54, param_table, result_table);
struct target *target = bank->target;
target_free_working_area(target, iap_working_area);
/* If the result is zero, the command probably didn't work out. */
if (result_table[0] == 0)
return LPC2000_INVALID_COMMAND;
*part_id = result_table[0];
return LPC2000_CMD_SUCCESS;
}
static int lpc2000_iap_blank_check(struct flash_bank *bank, int first, int last)
{
if ((first < 0) || (last >= bank->num_sectors))
return ERROR_FLASH_SECTOR_INVALID;
uint32_t param_table[5] = {0};
uint32_t result_table[4];
struct working_area *iap_working_area;
int retval = lpc2000_iap_working_area_init(bank, &iap_working_area);
if (retval != ERROR_OK)
return retval;
struct lpc2000_flash_bank *lpc2000_info = bank->driver_priv;
if (lpc2000_info->variant == lpc4300)
param_table[2] = lpc2000_info->lpc4300_bank;
for (int i = first; i <= last && retval == ERROR_OK; i++) {
/* check single sector */
param_table[0] = param_table[1] = i;
int status_code = lpc2000_iap_call(bank, iap_working_area, 53, param_table, result_table);
switch (status_code) {
case ERROR_FLASH_OPERATION_FAILED:
retval = ERROR_FLASH_OPERATION_FAILED;
break;
case LPC2000_CMD_SUCCESS:
bank->sectors[i].is_erased = 1;
break;
case LPC2000_SECTOR_NOT_BLANK:
bank->sectors[i].is_erased = 0;
break;
case LPC2000_INVALID_SECTOR:
bank->sectors[i].is_erased = 0;
break;
case LPC2000_BUSY:
retval = ERROR_FLASH_BUSY;
break;
default:
LOG_ERROR("BUG: unknown LPC2000 status code %i", status_code);
exit(-1);
}
}
struct target *target = bank->target;
target_free_working_area(target, iap_working_area);
return retval;
}
static int get_lpc2000_part_id(struct flash_bank *bank, uint32_t *part_id)
{
if (bank->target->state != TARGET_HALTED) {
LOG_ERROR("Target not halted");
return ERROR_TARGET_NOT_HALTED;
}
uint32_t param_table[5] = {0};
uint32_t result_table[4];
struct working_area *iap_working_area;
int retval = lpc2000_iap_working_area_init(bank, &iap_working_area);
if (retval != ERROR_OK)
return retval;
int status_code = lpc2000_iap_call(bank, iap_working_area, 54, param_table, result_table);
if (status_code == LPC2000_CMD_SUCCESS)
*part_id = result_table[0];
return status_code;
}
static int lpc2000_write(struct flash_bank *bank, const uint8_t *buffer, uint32_t offset, uint32_t count)
{
struct target *target = bank->target;
if (bank->target->state != TARGET_HALTED) {
LOG_ERROR("Target not halted");
return ERROR_TARGET_NOT_HALTED;
}
if (offset + count > bank->size)
return ERROR_FLASH_DST_OUT_OF_BANK;
struct lpc2000_flash_bank *lpc2000_info = bank->driver_priv;
uint32_t dst_min_alignment = lpc2000_info->cmd51_dst_boundary;
if (offset % dst_min_alignment) {
LOG_WARNING("offset 0x%" PRIx32 " breaks required alignment 0x%" PRIx32, offset, dst_min_alignment);
return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
}
int first_sector = 0;
int last_sector = 0;
for (int i = 0; i < bank->num_sectors; i++) {
if (offset >= bank->sectors[i].offset)
first_sector = i;
if (offset + DIV_ROUND_UP(count, dst_min_alignment) * dst_min_alignment > bank->sectors[i].offset)
last_sector = i;
}
LOG_DEBUG("first_sector: %i, last_sector: %i", first_sector, last_sector);
/* check if exception vectors should be flashed */
if ((offset == 0) && (count >= 0x20) && lpc2000_info->calc_checksum) {
assert(lpc2000_info->checksum_vector < 8);
uint32_t checksum = 0;
for (int i = 0; i < 8; i++) {
LOG_DEBUG("Vector 0x%2.2x: 0x%8.8" PRIx32, i * 4, buf_get_u32(buffer + (i * 4), 0, 32));
if (i != lpc2000_info->checksum_vector)
checksum += buf_get_u32(buffer + (i * 4), 0, 32);
}
checksum = 0 - checksum;
LOG_DEBUG("checksum: 0x%8.8" PRIx32, checksum);
uint32_t original_value = buf_get_u32(buffer + (lpc2000_info->checksum_vector * 4), 0, 32);
if (original_value != checksum) {
LOG_WARNING("Verification will fail since checksum in image (0x%8.8" PRIx32 ") to be written to flash is "
"different from calculated vector checksum (0x%8.8" PRIx32 ").", original_value, checksum);
LOG_WARNING("To remove this warning modify build tools on developer PC to inject correct LPC vector "
"checksum.");
}
/* FIXME: WARNING! This code is broken because it modifies the callers buffer in place. */
buf_set_u32((uint8_t *)buffer + (lpc2000_info->checksum_vector * 4), 0, 32, checksum);
}
struct working_area *iap_working_area;
int retval = lpc2000_iap_working_area_init(bank, &iap_working_area);
if (retval != ERROR_OK)
return retval;
struct working_area *download_area;
/* allocate a working area */
if (target_alloc_working_area(target, lpc2000_info->cmd51_max_buffer, &download_area) != ERROR_OK) {
LOG_ERROR("no working area specified, can't write LPC2000 internal flash");
target_free_working_area(target, iap_working_area);
return ERROR_FLASH_OPERATION_FAILED;
}
uint32_t bytes_remaining = count;
uint32_t bytes_written = 0;
uint32_t param_table[5] = {0};
uint32_t result_table[4];
if (lpc2000_info->variant == lpc4300)
/* Init IAP Anyway */
lpc2000_iap_call(bank, iap_working_area, 49, param_table, result_table);
while (bytes_remaining > 0) {
uint32_t thisrun_bytes;
if (bytes_remaining >= lpc2000_info->cmd51_max_buffer)
thisrun_bytes = lpc2000_info->cmd51_max_buffer;
else if (bytes_remaining >= 1024)
thisrun_bytes = 1024;
else if ((bytes_remaining >= 512) || (!lpc2000_info->cmd51_can_256b))
thisrun_bytes = 512;
else if ((bytes_remaining >= 256) || (!lpc2000_info->cmd51_can_64b))
thisrun_bytes = 256;
else
thisrun_bytes = 64;
/* Prepare sectors */
param_table[0] = first_sector;
param_table[1] = last_sector;
if (lpc2000_info->variant == lpc4300)
param_table[2] = lpc2000_info->lpc4300_bank;
else
param_table[2] = lpc2000_info->cclk;
int status_code = lpc2000_iap_call(bank, iap_working_area, 50, param_table, result_table);
switch (status_code) {
case ERROR_FLASH_OPERATION_FAILED:
retval = ERROR_FLASH_OPERATION_FAILED;
break;
case LPC2000_CMD_SUCCESS:
break;
case LPC2000_INVALID_SECTOR:
retval = ERROR_FLASH_SECTOR_INVALID;
break;
default:
LOG_WARNING("lpc2000 prepare sectors returned %i", status_code);
retval = ERROR_FLASH_OPERATION_FAILED;
break;
}
/* Exit if error occured */
if (retval != ERROR_OK)
break;
if (bytes_remaining >= thisrun_bytes) {
retval = target_write_buffer(bank->target, download_area->address, thisrun_bytes, buffer + bytes_written);
if (retval != ERROR_OK) {
retval = ERROR_FLASH_OPERATION_FAILED;
break;
}
} else {
uint8_t *last_buffer = malloc(thisrun_bytes);
memcpy(last_buffer, buffer + bytes_written, bytes_remaining);
memset(last_buffer + bytes_remaining, 0xff, thisrun_bytes - bytes_remaining);
target_write_buffer(bank->target, download_area->address, thisrun_bytes, last_buffer);
free(last_buffer);
}
LOG_DEBUG("writing 0x%" PRIx32 " bytes to address 0x%" PRIx32, thisrun_bytes,
bank->base + offset + bytes_written);
/* Write data */
param_table[0] = bank->base + offset + bytes_written;
param_table[1] = download_area->address;
param_table[2] = thisrun_bytes;
param_table[3] = lpc2000_info->cclk;
status_code = lpc2000_iap_call(bank, iap_working_area, 51, param_table, result_table);
switch (status_code) {
case ERROR_FLASH_OPERATION_FAILED:
retval = ERROR_FLASH_OPERATION_FAILED;
break;
case LPC2000_CMD_SUCCESS:
break;
case LPC2000_INVALID_SECTOR:
retval = ERROR_FLASH_SECTOR_INVALID;
break;
default:
LOG_WARNING("lpc2000 returned %i", status_code);
retval = ERROR_FLASH_OPERATION_FAILED;
break;
}
/* Exit if error occured */
if (retval != ERROR_OK)
break;
if (bytes_remaining > thisrun_bytes)
bytes_remaining -= thisrun_bytes;
else
bytes_remaining = 0;
bytes_written += thisrun_bytes;
}
target_free_working_area(target, iap_working_area);
target_free_working_area(target, download_area);
return retval;
}
static int lpc2000_erase(struct flash_bank *bank, int first, int last)
{
if (bank->target->state != TARGET_HALTED) {
LOG_ERROR("Target not halted");
return ERROR_TARGET_NOT_HALTED;
}
struct lpc2000_flash_bank *lpc2000_info = bank->driver_priv;
uint32_t param_table[5] = {0};
param_table[0] = first;
param_table[1] = last;
if (lpc2000_info->variant == lpc4300)
param_table[2] = lpc2000_info->lpc4300_bank;
else
param_table[2] = lpc2000_info->cclk;
uint32_t result_table[4];
struct working_area *iap_working_area;
int retval = lpc2000_iap_working_area_init(bank, &iap_working_area);
if (retval != ERROR_OK)
return retval;
if (lpc2000_info->variant == lpc4300)
/* Init IAP Anyway */
lpc2000_iap_call(bank, iap_working_area, 49, param_table, result_table);
/* Prepare sectors */
int status_code = lpc2000_iap_call(bank, iap_working_area, 50, param_table, result_table);
switch (status_code) {
case ERROR_FLASH_OPERATION_FAILED:
retval = ERROR_FLASH_OPERATION_FAILED;
break;
case LPC2000_CMD_SUCCESS:
break;
case LPC2000_INVALID_SECTOR:
retval = ERROR_FLASH_SECTOR_INVALID;
break;
default:
LOG_WARNING("lpc2000 prepare sectors returned %i", status_code);
retval = ERROR_FLASH_OPERATION_FAILED;
break;
}
if (retval == ERROR_OK) {
/* Erase sectors */
param_table[2] = lpc2000_info->cclk;
if (lpc2000_info->variant == lpc4300)
param_table[3] = lpc2000_info->lpc4300_bank;
status_code = lpc2000_iap_call(bank, iap_working_area, 52, param_table, result_table);
switch (status_code) {
case ERROR_FLASH_OPERATION_FAILED:
retval = ERROR_FLASH_OPERATION_FAILED;
break;
case LPC2000_CMD_SUCCESS:
break;
case LPC2000_INVALID_SECTOR:
retval = ERROR_FLASH_SECTOR_INVALID;
break;
default:
LOG_WARNING("lpc2000 erase sectors returned %i", status_code);
retval = ERROR_FLASH_OPERATION_FAILED;
break;
}
}
struct target *target = bank->target;
target_free_working_area(target, iap_working_area);
return retval;
}
