board/amlogic/beelink-s922x/beelink-s922x.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (C) 2020 BayLibre, SAS
   4  * Author: Neil Armstrong <narmstrong@baylibre.com>
   5  */
   6
   7 #include <common.h>
   8 #include <dm.h>
   9 #include <env.h>
  10 #include <init.h>
  11 #include <net.h>
  12 #include <asm/io.h>
  13 #include <asm/arch/sm.h>
  14 #include <asm/arch/eth.h>
  15 #include <asm/arch/boot.h>
  16
  17 #define EFUSE_MAC_OFFSET        20
  18 #define EFUSE_MAC_SIZE          12
  19 #define MAC_ADDR_LEN            6
  20
  21 int misc_init_r(void)
  22 {
  23         u8 mac_addr[MAC_ADDR_LEN];
  24         char efuse_mac_addr[EFUSE_MAC_SIZE], tmp[3];
  25         ssize_t len;
  26
  27         if (IS_ENABLED(CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG) &&
  28             meson_get_soc_rev(tmp, sizeof(tmp)) > 0)
  29                 env_set("soc_rev", tmp);
  30
  31         if (!eth_env_get_enetaddr("ethaddr", mac_addr)) {
  32                 len = meson_sm_read_efuse(EFUSE_MAC_OFFSET,
  33                                           efuse_mac_addr, EFUSE_MAC_SIZE);
  34                 if (len != EFUSE_MAC_SIZE)
  35                         return 0;
  36
  37                 /* MAC is stored in ASCII format, 1bytes = 2characters */
  38                 for (int i = 0; i < 6; i++) {
  39                         tmp[0] = efuse_mac_addr[i * 2];
  40                         tmp[1] = efuse_mac_addr[i * 2 + 1];
  41                         tmp[2] = '\0';
  42                         mac_addr[i] = hextoul(tmp, NULL);
  43                 }
  44
  45                 if (is_valid_ethaddr(mac_addr))
  46                         eth_env_set_enetaddr("ethaddr", mac_addr);
  47                 else
  48                         meson_generate_serial_ethaddr();
  49         }
  50
  51         return 0;
  52 }