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