odroid-n2.c 1.1 KB

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * Copyright (C) 2020 BayLibre, SAS
  4. * Author: Neil Armstrong <narmstrong@baylibre.com>
  5. */
  6. #include <common.h>
  7. #include <dm.h>
  8. #include <env.h>
  9. #include <init.h>
  10. #include <net.h>
  11. #include <asm/io.h>
  12. #include <asm/arch/sm.h>
  13. #include <asm/arch/eth.h>
  14. #define EFUSE_MAC_OFFSET 20
  15. #define EFUSE_MAC_SIZE 12
  16. #define MAC_ADDR_LEN 6
  17. int misc_init_r(void)
  18. {
  19. u8 mac_addr[MAC_ADDR_LEN];
  20. char efuse_mac_addr[EFUSE_MAC_SIZE], tmp[3];
  21. ssize_t len;
  22. meson_eth_init(PHY_INTERFACE_MODE_RGMII, 0);
  23. if (!eth_env_get_enetaddr("ethaddr", mac_addr)) {
  24. len = meson_sm_read_efuse(EFUSE_MAC_OFFSET,
  25. efuse_mac_addr, EFUSE_MAC_SIZE);
  26. if (len != EFUSE_MAC_SIZE)
  27. return 0;
  28. /* MAC is stored in ASCII format, 1bytes = 2characters */
  29. for (int i = 0; i < 6; i++) {
  30. tmp[0] = efuse_mac_addr[i * 2];
  31. tmp[1] = efuse_mac_addr[i * 2 + 1];
  32. tmp[2] = '\0';
  33. mac_addr[i] = simple_strtoul(tmp, NULL, 16);
  34. }
  35. if (is_valid_ethaddr(mac_addr))
  36. eth_env_set_enetaddr("ethaddr", mac_addr);
  37. else
  38. meson_generate_serial_ethaddr();
  39. }
  40. return 0;
  41. }