mac_eeprom.c 714 B

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * Copyright (C) 2017 Microchip
  4. * Wenyou Yang <wenyou.yang@microchip.com>
  5. */
  6. #include <common.h>
  7. #include <dm.h>
  8. #include <env.h>
  9. #include <environment.h>
  10. #include <i2c_eeprom.h>
  11. #include <netdev.h>
  12. int at91_set_ethaddr(int offset)
  13. {
  14. const int ETH_ADDR_LEN = 6;
  15. unsigned char ethaddr[ETH_ADDR_LEN];
  16. const char *ETHADDR_NAME = "ethaddr";
  17. struct udevice *dev;
  18. int ret;
  19. if (env_get(ETHADDR_NAME))
  20. return 0;
  21. ret = uclass_first_device_err(UCLASS_I2C_EEPROM, &dev);
  22. if (ret)
  23. return ret;
  24. ret = i2c_eeprom_read(dev, offset, ethaddr, 6);
  25. if (ret)
  26. return ret;
  27. if (is_valid_ethaddr(ethaddr))
  28. eth_env_set_enetaddr(ETHADDR_NAME, ethaddr);
  29. return 0;
  30. }