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https://github.com/brain-hackers/u-boot-brain
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68d3ec599e
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+
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/*
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* Copyright (C) 2017 Microchip
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* Wenyou Yang <wenyou.yang@microchip.com>
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*/
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#include <common.h>
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#include <dm.h>
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#include <eeprom.h>
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#include <env.h>
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#include <i2c_eeprom.h>
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#include <net.h>
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#include <netdev.h>
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int at91_set_ethaddr(int offset)
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{
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const int ETH_ADDR_LEN = 6;
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unsigned char ethaddr[ETH_ADDR_LEN];
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const char *ETHADDR_NAME = "ethaddr";
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struct udevice *dev;
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int ret;
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if (env_get(ETHADDR_NAME))
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return 0;
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ret = uclass_first_device_err(UCLASS_I2C_EEPROM, &dev);
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if (ret)
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return ret;
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ret = i2c_eeprom_read(dev, offset, ethaddr, 6);
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if (ret)
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return ret;
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if (is_valid_ethaddr(ethaddr))
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eth_env_set_enetaddr(ETHADDR_NAME, ethaddr);
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return 0;
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}
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/* this function will set eth1addr from a second eeprom, if available */
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int at91_set_eth1addr(int offset)
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{
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const int ETH_ADDR_LEN = 6;
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unsigned char ethaddr[ETH_ADDR_LEN];
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/* configure eth1addr for second interface */
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const char *ETHADDR_NAME = "eth1addr";
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struct udevice *dev;
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int ret;
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if (env_get(ETHADDR_NAME))
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return 0;
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/* first eeprom is retrieved, this is for the first interface */
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ret = uclass_first_device_err(UCLASS_I2C_EEPROM, &dev);
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if (ret)
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return ret;
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/* attempt to obtain a second eeprom device */
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ret = uclass_next_device(&dev);
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if (ret)
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return ret;
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ret = i2c_eeprom_read(dev, offset, ethaddr, 6);
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if (ret)
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return ret;
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if (is_valid_ethaddr(ethaddr))
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eth_env_set_enetaddr(ETHADDR_NAME, ethaddr);
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return 0;
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}
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