diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usbtty.c | 28 |
1 files changed, 23 insertions, 5 deletions
diff --git a/drivers/usbtty.c b/drivers/usbtty.c index 2f89e2b..7e553b3 100644 --- a/drivers/usbtty.c +++ b/drivers/usbtty.c @@ -70,12 +70,17 @@ int usbtty_configured_flag = 0; /* + * Serial number + */ +static char serial_number[16]; + +/* * Descriptors */ static u8 wstrLang[4] = {4,USB_DT_STRING,0x9,0x4}; static u8 wstrManufacturer[2 + 2*(sizeof(CONFIG_USBD_MANUFACTURER)-1)]; static u8 wstrProduct[2 + 2*(sizeof(CONFIG_USBD_PRODUCT_NAME)-1)]; -static u8 wstrSerial[2 + 2*(sizeof(CONFIG_USBD_SERIAL_NUMBER)-1)]; +static u8 wstrSerial[2 + 2*(sizeof(serial_number) - 1)]; static u8 wstrConfiguration[2 + 2*(sizeof(CONFIG_USBD_CONFIGURATION_STR)-1)]; static u8 wstrInterface[2 + 2*(sizeof(CONFIG_USBD_INTERFACE_STR)-1)]; @@ -307,7 +312,20 @@ void usbtty_puts (const char *str) int drv_usbtty_init (void) { int rc; - + char * sn; + int snlen; + + if (!(sn = getenv("serial#"))) { + sn = "000000000000"; + } + snlen = strlen(sn); + if (snlen > sizeof(serial_number) - 1) { + printf ("Warning: serial number %s is too long (%d > %d)\n", + sn, snlen, sizeof(serial_number) - 1); + snlen = sizeof(serial_number) - 1; + } + memcpy (serial_number, sn, snlen); + serial_number[snlen] = '\0'; /* prepare buffers... */ buf_init (&usbtty_input, USBTTY_BUFFER_SIZE); @@ -355,9 +373,9 @@ static void usbtty_init_strings (void) str2wide (CONFIG_USBD_PRODUCT_NAME, string->wData); string = (struct usb_string_descriptor *) wstrSerial; - string->bLength = sizeof (wstrSerial); + string->bLength = 2 + 2*strlen(serial_number); string->bDescriptorType = USB_DT_STRING; - str2wide (CONFIG_USBD_SERIAL_NUMBER, string->wData); + str2wide (serial_number, string->wData); string = (struct usb_string_descriptor *) wstrConfiguration; string->bLength = sizeof (wstrConfiguration); @@ -392,7 +410,7 @@ static void usbtty_init_instances (void) bus_instance->endpoint_array = endpoint_instance; bus_instance->max_endpoints = 1; bus_instance->maxpacketsize = 64; - bus_instance->serial_number_str = CONFIG_USBD_SERIAL_NUMBER; + bus_instance->serial_number_str = serial_number; /* configuration instance */ memset (config_instance, 0, |