*/
int ftdi_eeprom_build(struct ftdi_context *ftdi, unsigned char *output)
{
- unsigned char i, j;
+ unsigned char i, j, k;
unsigned short checksum, value;
unsigned char manufacturer_size = 0, product_size = 0, serial_size = 0;
int size_check;
// empty eeprom
memset (output, 0, eeprom->size);
- // Addr 00: High current IO
- output[0x00] = eeprom->high_current_a ? HIGH_CURRENT_DRIVE : 0;
- // Addr 01: IN endpoint size (for R type devices, different for FT2232)
- if (ftdi->type == TYPE_R) {
- output[0x01] = 0x40;
- }
+ // Bytes and Bits set for all Types
+
// Addr 02: Vendor ID
output[0x02] = eeprom->vendor_id;
output[0x03] = eeprom->vendor_id >> 8;
// Addr 09: Max power consumption: max power = value * 2 mA
output[0x09] = eeprom->max_power;
- // Addr 0A: Chip configuration
- // Bit 7: 0 - reserved
- // Bit 6: 0 - reserved
- // Bit 5: 0 - reserved
- // Bit 4: 1 - Change USB version
- // not seen on FT2232C)
- // Bit 3: 1 - Use the serial number string
- // Bit 2: 1 - Enable suspend pull downs for lower power
- // Bit 1: 1 - Out EndPoint is Isochronous
- // Bit 0: 1 - In EndPoint is Isochronous
- //
- j = 0;
- if (eeprom->in_is_isochronous == 1)
- j = j | 1;
- if (eeprom->out_is_isochronous == 1)
- j = j | 2;
- if (eeprom->suspend_pull_downs == 1)
- j = j | 4;
- if (eeprom->use_serial == 1)
- j = j | 8;
- output[0x0A] = j;
-
- // Addr 0B: Invert data lines
- output[0x0B] = eeprom->invert & 0xff;
-
- // Addr 0C: USB version low byte
- // Addr 0D: USB version high byte
- output[0x0C] = eeprom->usb_version;
- output[0x0D] = eeprom->usb_version >> 8;
-
-
- // Addr 0E: Offset of the manufacturer string + 0x80, calculated later
- // Addr 0F: Length of manufacturer string
- output[0x0F] = manufacturer_size*2 + 2;
-
- // Addr 10: Offset of the product string + 0x80, calculated later
- // Addr 11: Length of product string
- output[0x11] = product_size*2 + 2;
-
- // Addr 12: Offset of the serial string + 0x80, calculated later
- // Addr 13: Length of serial string
- output[0x13] = serial_size*2 + 2;
-
- // Addr 14: CBUS function: CBUS0, CBUS1
- // Addr 15: CBUS function: CBUS2, CBUS3
- // Addr 16: CBUS function: CBUS5
- output[0x14] = eeprom->cbus_function[0] | (eeprom->cbus_function[1] << 4);
- output[0x15] = eeprom->cbus_function[2] | (eeprom->cbus_function[3] << 4);
- output[0x16] = eeprom->cbus_function[4];
- // Addr 17: Unknown
+ if(ftdi->type != TYPE_AM)
+ {
+ // Addr 0A: Chip configuration
+ // Bit 7: 0 - reserved
+ // Bit 6: 0 - reserved
+ // Bit 5: 0 - reserved
+ // Bit 4: 1 - Change USB version
+ // Bit 3: 1 - Use the serial number string
+ // Bit 2: 1 - Enable suspend pull downs for lower power
+ // Bit 1: 1 - Out EndPoint is Isochronous
+ // Bit 0: 1 - In EndPoint is Isochronous
+ //
+ j = 0;
+ if (eeprom->in_is_isochronous == 1)
+ j = j | 1;
+ if (eeprom->out_is_isochronous == 1)
+ j = j | 2;
+ output[0x0A] = j;
+ }
// Dynamic content
- // In images produced by FTDI's FT_Prog for FT232R strings start at 0x18
- // Space till 0x18 should be considered as reserved.
- if (ftdi->type >= TYPE_R) {
- i = 0x18;
- } else {
- i = 0x14;
+ // Strings start at 0x94 (TYPE_AM, TYPE_BM)
+ // 0x96 (TYPE_2232C), 0x98 (TYPE_R) and 0x9a (TYPE_x232H)
+ i = 0;
+ switch(ftdi->type)
+ {
+ case TYPE_2232H:
+ case TYPE_4232H:
+ i += 2;
+ case TYPE_R:
+ i += 2;
+ case TYPE_2232C:
+ i += 2;
+ case TYPE_AM:
+ case TYPE_BM:
+ i += 0x94;
}
- if (eeprom->size >= 256) i = 0x80;
-
+ /* Wrap around 0x80 for 128 byte EEPROMS (Internale and 93x46) */
+ k = eeprom->size -1;
+ // Addr 0E: Offset of the manufacturer string + 0x80, calculated later
+ // Addr 0F: Length of manufacturer string
// Output manufacturer
- output[0x0E] = i | 0x80; // calculate offset
- output[i++] = manufacturer_size*2 + 2;
- output[i++] = 0x03; // type: string
+ output[0x0E] = i; // calculate offset
+ output[i++ & k] = manufacturer_size*2 + 2;
+ output[i++ & k] = 0x03; // type: string
for (j = 0; j < manufacturer_size; j++)
{
- output[i] = eeprom->manufacturer[j], i++;
- output[i] = 0x00, i++;
+ output[i & k] = eeprom->manufacturer[j], i++;
+ output[i & k] = 0x00, i++;
}
+ output[0x0F] = manufacturer_size*2 + 2;
- // Output product name
+ // Addr 10: Offset of the product string + 0x80, calculated later
+ // Addr 11: Length of product string
output[0x10] = i | 0x80; // calculate offset
- output[i] = product_size*2 + 2, i++;
- output[i] = 0x03, i++;
+ output[i & k] = product_size*2 + 2, i++;
+ output[i & k] = 0x03, i++;
for (j = 0; j < product_size; j++)
{
- output[i] = eeprom->product[j], i++;
- output[i] = 0x00, i++;
+ output[i & k] = eeprom->product[j], i++;
+ output[i & k] = 0x00, i++;
}
-
- // Output serial
+ output[0x11] = product_size*2 + 2;
+
+ // Addr 12: Offset of the serial string + 0x80, calculated later
+ // Addr 13: Length of serial string
output[0x12] = i | 0x80; // calculate offset
- output[i] = serial_size*2 + 2, i++;
- output[i] = 0x03, i++;
+ output[i & k] = serial_size*2 + 2, i++;
+ output[i & k] = 0x03, i++;
for (j = 0; j < serial_size; j++)
{
- output[i] = eeprom->serial[j], i++;
- output[i] = 0x00, i++;
+ output[i & k] = eeprom->serial[j], i++;
+ output[i & k] = 0x00, i++;
}
+ output[0x13] = serial_size*2 + 2;
+ /* Fixme: ftd2xx seems to append 0x02, 0x03 and 0x01 for PnP = 0 or 0x00 else */
// calculate checksum
checksum = 0xAAAA;
git://developer.intra2net.com / libftdi / blobdiff