colibri_vf: set USB vendor and product ID when using DFUColibri_VF_LinuxImageV2.3Beta5_20141219Colibri_T30_LinuxImageV2.3Beta5_20141219Apalis_T30_LinuxImageV2.3Beta5_20141219

Set USB vendor and product ID of the module when using DFU. This
allows to identify the module over USB and act accordingly if
necessary (e.g. flash different version or root filesystem or
similar use cases).

Also the serial number of the USB device is visible by using the
lsusb utility:
$ lsusb -d 1b67: -v
Bus 002 Device 092: ID 1b67:0018
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            2 Communications
  bDeviceSubClass         2 Abstract (modem)
  bDeviceProtocol         0
  bMaxPacketSize0        64
  idVendor           0x1b67
  idProduct          0x0018
  bcdDevice            2.21
  iManufacturer           1 Toradex
  iProduct                2 USB download gadget
  iSerial                 3 4799890

...

1 files changed, 29 insertions, 0 deletions

diff --git a/board/toradex/common/configblock.c b/board/toradex/common/configblock.c
index 0d333d5a67..7843e0aa8b 100644
--- a/board/toradex/common/configblock.c
+++ b/board/toradex/common/configblock.c
@@ -186,4 +186,33 @@ err:
 	config_block = NULL;
 	return err;
 }
+
+void get_board_serial_char(char *serialnr)
+{
+	unsigned int serial = 0;
+	unsigned int serial_offset = 11;
+
+	if (config_block == NULL) {
+		strcpy(serialnr, "UNKNOWN");
+		return;
+	}
+
+	/* Get MAC address from config block */
+	memcpy(&serial, config_block + serial_offset, 3);
+	serial = ntohl(serial);
+	serial >>= 8;
+
+	sprintf(serialnr, "%u", serial);
+}
+
+void get_board_product_number(unsigned short *prodnr)
+{
+	unsigned int prodnr_offset = 25;
+
+	if (config_block == NULL)
+		return;
+
+	memcpy(prodnr, config_block + prodnr_offset, 2);
+	*prodnr = ntohs(*prodnr);
+}
 #endif /* CONFIG_TRDX_CFG_BLOCK */