From 68d3ec599edff1c7ead539820efbc2234fb965ed Mon Sep 17 00:00:00 2001 From: Eugen Hristev Date: Wed, 5 Aug 2020 15:30:34 +0300 Subject: board: atmel: common: introduce at91_set_eth1addr for second interface 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 --- board/atmel/common/mac_eeprom.c | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) (limited to 'board/atmel') diff --git a/board/atmel/common/mac_eeprom.c b/board/atmel/common/mac_eeprom.c index 2205dd3..a723ba7 100644 --- a/board/atmel/common/mac_eeprom.c +++ b/board/atmel/common/mac_eeprom.c @@ -36,3 +36,36 @@ int at91_set_ethaddr(int offset) 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; +} -- cgit v1.1