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board: atmel: common: introduce at91_set_eth1addr for second interface

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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>
This commit is contained in:
Eugen Hristev 2020-08-05 15:30:34 +03:00
parent 6a6fe3ed4d
commit 68d3ec599e
2 changed files with 34 additions and 0 deletions
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1
arch/arm/mach-at91/include/mach/at91_common.h
View file

@ -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);

33
board/atmel/common/mac_eeprom.c
View file

@ -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;
}