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 <[email protected]> --- arch/arm/mach-at91/include/mach/at91_common.h | 1 + board/atmel/common/mac_eeprom.c | 33 +++++++++++++++++++ 2 files changed, 34 insertions(+) diff --git a/arch/arm/mach-at91/include/mach/at91_common.h b/arch/arm/mach-at91/include/mach/at91_common.h index 01e00c508a..f7b411cf7d 100644 --- a/arch/arm/mach-at91/include/mach/at91_common.h +++ b/arch/arm/mach-at91/include/mach/at91_common.h @@ -40,6 +40,7 @@ void configure_ddrcfg_input_buffers(bool open); #endif int at91_set_ethaddr(int offset); +int at91_set_eth1addr(int offset); void at91_spi_nor_set_ethaddr(void); int at91_video_show_board_info(void); diff --git a/board/atmel/common/mac_eeprom.c b/board/atmel/common/mac_eeprom.c index 050aa51ee1..0f038beee6 100644 --- a/board/atmel/common/mac_eeprom.c +++ b/board/atmel/common/mac_eeprom.c @@ -35,3 +35,36 @@ 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; +} -- 2.25.1
