mac_eeprom.c 1.5 KB

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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 <eeprom.h>
  9. #include <env.h>
  10. #include <i2c_eeprom.h>
  11. #include <net.h>
  12. #include <netdev.h>
  13. int at91_set_ethaddr(int offset)
  14. {
  15. const int ETH_ADDR_LEN = 6;
  16. unsigned char ethaddr[ETH_ADDR_LEN];
  17. const char *ETHADDR_NAME = "ethaddr";
  18. struct udevice *dev;
  19. int ret;
  20. if (env_get(ETHADDR_NAME))
  21. return 0;
  22. ret = uclass_first_device_err(UCLASS_I2C_EEPROM, &dev);
  23. if (ret)
  24. return ret;
  25. ret = i2c_eeprom_read(dev, offset, ethaddr, 6);
  26. if (ret)
  27. return ret;
  28. if (is_valid_ethaddr(ethaddr))
  29. eth_env_set_enetaddr(ETHADDR_NAME, ethaddr);
  30. return 0;
  31. }
  32. /* this function will set eth1addr from a second eeprom, if available */
  33. int at91_set_eth1addr(int offset)
  34. {
  35. const int ETH_ADDR_LEN = 6;
  36. unsigned char ethaddr[ETH_ADDR_LEN];
  37. /* configure eth1addr for second interface */
  38. const char *ETHADDR_NAME = "eth1addr";
  39. struct udevice *dev;
  40. int ret;
  41. if (env_get(ETHADDR_NAME))
  42. return 0;
  43. /* first eeprom is retrieved, this is for the first interface */
  44. ret = uclass_first_device_err(UCLASS_I2C_EEPROM, &dev);
  45. if (ret)
  46. return ret;
  47. /* attempt to obtain a second eeprom device */
  48. ret = uclass_next_device(&dev);
  49. if (ret)
  50. return ret;
  51. ret = i2c_eeprom_read(dev, offset, ethaddr, 6);
  52. if (ret)
  53. return ret;
  54. if (is_valid_ethaddr(ethaddr))
  55. eth_env_set_enetaddr(ETHADDR_NAME, ethaddr);
  56. return 0;
  57. }