board: atmel: common: introduce at91_set_eth1addr for second interface
We already have a function to retrieve the mac address from one EEPROM.
For boards with a second Ethernet interface, however, we would
require another EEPROM with a second unique MAC address.
Introduce at91_set_eth1addr which will look for a second EEPROM
and set the 'eth1addr' variable with the obtained MAC address.
Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
diff --git a/board/atmel/common/mac_eeprom.c b/board/atmel/common/mac_eeprom.c
index 2205dd3..a723ba7 100644
--- a/board/atmel/common/mac_eeprom.c
+++ b/board/atmel/common/mac_eeprom.c
@@ -36,3 +36,36 @@
return 0;
}
+
+/* this function will set eth1addr from a second eeprom, if available */
+int at91_set_eth1addr(int offset)
+{
+ const int ETH_ADDR_LEN = 6;
+ unsigned char ethaddr[ETH_ADDR_LEN];
+ /* configure eth1addr for second interface */
+ const char *ETHADDR_NAME = "eth1addr";
+ struct udevice *dev;
+ int ret;
+
+ if (env_get(ETHADDR_NAME))
+ return 0;
+
+ /* first eeprom is retrieved, this is for the first interface */
+ ret = uclass_first_device_err(UCLASS_I2C_EEPROM, &dev);
+ if (ret)
+ return ret;
+
+ /* attempt to obtain a second eeprom device */
+ ret = uclass_next_device(&dev);
+ if (ret)
+ return ret;
+
+ ret = i2c_eeprom_read(dev, offset, ethaddr, 6);
+ if (ret)
+ return ret;
+
+ if (is_valid_ethaddr(ethaddr))
+ eth_env_set_enetaddr(ETHADDR_NAME, ethaddr);
+
+ return 0;
+}