mac_eeprom.c 689 B

123456789101112131415161718192021222324252627282930313233343536
  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 <i2c_eeprom.h>
  10. #include <netdev.h>
  11. int at91_set_ethaddr(int offset)
  12. {
  13. const int ETH_ADDR_LEN = 6;
  14. unsigned char ethaddr[ETH_ADDR_LEN];
  15. const char *ETHADDR_NAME = "ethaddr";
  16. struct udevice *dev;
  17. int ret;
  18. if (env_get(ETHADDR_NAME))
  19. return 0;
  20. ret = uclass_first_device_err(UCLASS_I2C_EEPROM, &dev);
  21. if (ret)
  22. return ret;
  23. ret = i2c_eeprom_read(dev, offset, ethaddr, 6);
  24. if (ret)
  25. return ret;
  26. if (is_valid_ethaddr(ethaddr))
  27. eth_env_set_enetaddr(ETHADDR_NAME, ethaddr);
  28. return 0;
  29. }