static int
fx3_ram_write (
cyusb_handle *h,
unsigned char *buf,
unsigned int ramAddress,
int len)
{
int r;
int index = 0;
int size;
while (len > 0) {
size = (len > MAX_WRITE_SIZE) ? MAX_WRITE_SIZE : len;
r = cyusb_control_transfer (h, 0x40, 0xA0, GET_LSW(ramAddress), GET_MSW(ramAddress),
&buf[index], size, VENDORCMD_TIMEOUT);
if (r != size) {
fprintf (stderr, "Error: Vendor write to FX3 RAM failed\n");
return -1;
}
ramAddress += size;
index += size;
len -= size;
}
return 0;
}
int SPI_DOWNLOAD_THREAD::ram_write(unsigned char *buf, unsigned int ramAddress, int len)
{
int r;
int index = 0;
int size;
while ( len > 0 ) {
size = (len > MAX_WRITE_SIZE) ? MAX_WRITE_SIZE : len;
r = cyusb_control_transfer(h, 0x40, 0xA0, GET_LSW(ramAddress), GET_MSW(ramAddress),
&buf[index], size, VENDORCMD_TIMEOUT);
if ( r != size ) {
printf("Vendor write to FX3 RAM failed\n");
return -1;
}
ramAddress += size;
index += size;
len -= size;
}
return 0;
}
int SPI_DOWNLOAD_THREAD::fx3_usbboot_download(const char *filename)
{
unsigned char *fwBuf;
unsigned int *data_p;
unsigned int i, checksum;
unsigned int address, length;
int r, index;
fwBuf = (unsigned char *)calloc (1, MAX_FWIMG_SIZE);
if ( fwBuf == 0 ) {
printf("Failed to allocate buffer to store firmware binary\n");
sb->showMessage("Error: Failed to get memory for download\n", 5000);
return -1;
}
// Read the firmware image into the local RAM buffer.
r = read_firmware_image(filename, fwBuf, NULL);
if ( r != 0 ) {
printf("Failed to read firmware file %s\n", filename);
sb->showMessage("Error: Failed to read firmware binary\n", 5000);
free(fwBuf);
return -2;
}
// Run through each section of code, and use vendor commands to download them to RAM.
index = 4;
checksum = 0;
while ( index < filesize ) {
data_p = (unsigned int *)(fwBuf + index);
length = data_p[0];
address = data_p[1];
if (length != 0) {
for (i = 0; i < length; i++)
checksum += data_p[2 + i];
r = ram_write(fwBuf + index + 8, address, length * 4);
if (r != 0) {
printf("Failed to download data to FX3 RAM\n");
sb->showMessage("Error: Write to FX3 RAM failed", 5000);
free(fwBuf);
return -3;
}
} else {
if (checksum != data_p[2]) {
printf ("Checksum error in firmware binary\n");
sb->showMessage("Error: Firmware checksum error", 5000);
free(fwBuf);
return -4;
}
r = cyusb_control_transfer(h, 0x40, 0xA0, GET_LSW(address), GET_MSW(address), NULL,
0, VENDORCMD_TIMEOUT);
if ( r != 0 )
printf("Ignored error in control transfer: %d\n", r);
break;
}
index += (8 + length * 4);
}
free(fwBuf);
return 0;
}
