Merge tag 'u-boot-atmel-fixes-2020.07-a' of https://gitlab.denx.de/u-boot/custodians...
[oweals/u-boot.git] / board / atmel / common / mac_eeprom.c
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 <eeprom.h>
10 #include <env.h>
11 #include <i2c_eeprom.h>
12 #include <net.h>
13 #include <netdev.h>
14
15 int at91_set_ethaddr(int offset)
16 {
17         const int ETH_ADDR_LEN = 6;
18         unsigned char ethaddr[ETH_ADDR_LEN];
19         const char *ETHADDR_NAME = "ethaddr";
20         struct udevice *dev;
21         int ret;
22
23         if (env_get(ETHADDR_NAME))
24                 return 0;
25
26         ret = uclass_first_device_err(UCLASS_I2C_EEPROM, &dev);
27         if (ret)
28                 return ret;
29
30         ret = i2c_eeprom_read(dev, offset, ethaddr, 6);
31         if (ret)
32                 return ret;
33
34         if (is_valid_ethaddr(ethaddr))
35                 eth_env_set_enetaddr(ETHADDR_NAME, ethaddr);
36
37         return 0;
38 }