q200.c 1014 B

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * Copyright (C) 2016 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/gx.h>
  13. #include <asm/arch/mem.h>
  14. #include <asm/arch/sm.h>
  15. #include <asm/arch/eth.h>
  16. #define EFUSE_SN_OFFSET 20
  17. #define EFUSE_SN_SIZE 16
  18. #define EFUSE_MAC_OFFSET 52
  19. #define EFUSE_MAC_SIZE 6
  20. int misc_init_r(void)
  21. {
  22. u8 mac_addr[EFUSE_MAC_SIZE];
  23. char serial[EFUSE_SN_SIZE];
  24. ssize_t len;
  25. if (!eth_env_get_enetaddr("ethaddr", mac_addr)) {
  26. len = meson_sm_read_efuse(EFUSE_MAC_OFFSET,
  27. mac_addr, EFUSE_MAC_SIZE);
  28. if (len == EFUSE_MAC_SIZE && is_valid_ethaddr(mac_addr))
  29. eth_env_set_enetaddr("ethaddr", mac_addr);
  30. else
  31. meson_generate_serial_ethaddr();
  32. }
  33. if (!env_get("serial#")) {
  34. len = meson_sm_read_efuse(EFUSE_SN_OFFSET, serial,
  35. EFUSE_SN_SIZE);
  36. if (len == EFUSE_SN_SIZE)
  37. env_set("serial#", serial);
  38. }
  39. return 0;
  40. }