mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-09-13 00:03:26 +09:00
![Eugen Hristev](/assets/img/avatar_default.png)
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>
72 lines
1.5 KiB
C
72 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (C) 2017 Microchip
|
|
* Wenyou Yang <wenyou.yang@microchip.com>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <eeprom.h>
|
|
#include <env.h>
|
|
#include <i2c_eeprom.h>
|
|
#include <net.h>
|
|
#include <netdev.h>
|
|
|
|
int at91_set_ethaddr(int offset)
|
|
{
|
|
const int ETH_ADDR_LEN = 6;
|
|
unsigned char ethaddr[ETH_ADDR_LEN];
|
|
const char *ETHADDR_NAME = "ethaddr";
|
|
struct udevice *dev;
|
|
int ret;
|
|
|
|
if (env_get(ETHADDR_NAME))
|
|
return 0;
|
|
|
|
ret = uclass_first_device_err(UCLASS_I2C_EEPROM, &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;
|
|
}
|
|
|
|
/* 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;
|
|
}
|