1 /* 2 * Copyright (C) 2017 Microchip 3 * Wenyou Yang <wenyou.yang@microchip.com> 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 8 #include <common.h> 9 #include <dm.h> 10 #include <environment.h> 11 #include <i2c_eeprom.h> 12 #include <netdev.h> 13 14 int at91_set_ethaddr(int offset) 15 { 16 const int ETH_ADDR_LEN = 6; 17 unsigned char ethaddr[ETH_ADDR_LEN]; 18 const char *ETHADDR_NAME = "ethaddr"; 19 struct udevice *dev; 20 int ret; 21 22 if (env_get(ETHADDR_NAME)) 23 return 0; 24 25 ret = uclass_first_device_err(UCLASS_I2C_EEPROM, &dev); 26 if (ret) 27 return ret; 28 29 ret = i2c_eeprom_read(dev, offset, ethaddr, 6); 30 if (ret) 31 return ret; 32 33 if (is_valid_ethaddr(ethaddr)) 34 eth_env_set_enetaddr(ETHADDR_NAME, ethaddr); 35 36 return 0; 37 } 38