board/amlogic/jethub-j80/jethub-j80.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (C) 2021 Vyacheslav Bocharov
   4  * Author: Vyacheslav Bocharov <adeep@lexina.in>
   5  * Author: Neil Armstrong <narmstrong@baylibre.com>
   6  *
   7  */
   8
   9 #include <common.h>
  10 #include <dm.h>
  11 #include <adc.h>
  12 #include <env.h>
  13 #include <init.h>
  14 #include <net.h>
  15 #include <asm/io.h>
  16 #include <asm/arch/gx.h>
  17 #include <asm/arch/sm.h>
  18 #include <asm/arch/eth.h>
  19 #include <asm/arch/mem.h>
  20
  21 #define EFUSE_SN_OFFSET         50
  22 #define EFUSE_SN_SIZE           32
  23 #define EFUSE_MAC_OFFSET        0
  24 #define EFUSE_MAC_SIZE          6
  25 #define EFUSE_USID_OFFSET       18
  26 #define EFUSE_USID_SIZE         32
  27
  28 int misc_init_r(void)
  29 {
  30         u8 mac_addr[EFUSE_MAC_SIZE];
  31         char serial[EFUSE_SN_SIZE];
  32         char usid[EFUSE_USID_SIZE];
  33         ssize_t len;
  34         unsigned int adcval;
  35         int ret;
  36
  37         if (!eth_env_get_enetaddr("ethaddr", mac_addr)) {
  38                 len = meson_sm_read_efuse(EFUSE_MAC_OFFSET,
  39                                           mac_addr, EFUSE_MAC_SIZE);
  40                 if (len == EFUSE_MAC_SIZE && is_valid_ethaddr(mac_addr))
  41                         eth_env_set_enetaddr("ethaddr", mac_addr);
  42                 else
  43                         meson_generate_serial_ethaddr();
  44         }
  45
  46         if (!env_get("serial")) {
  47                 len = meson_sm_read_efuse(EFUSE_SN_OFFSET, serial,
  48                                           EFUSE_SN_SIZE);
  49                 if (len == EFUSE_SN_SIZE)
  50                         env_set("serial", serial);
  51         }
  52
  53         if (!env_get("usid")) {
  54                 len = meson_sm_read_efuse(EFUSE_USID_OFFSET, usid,
  55                                           EFUSE_USID_SIZE);
  56                 if (len == EFUSE_USID_SIZE)
  57                         env_set("usid", usid);
  58         }
  59
  60         ret = adc_channel_single_shot("adc@8680", 0, &adcval);
  61         if (adcval < 3000)
  62                 env_set("userbutton", "true");
  63         else
  64                 env_set("userbutton", "false");
  65
  66         return 0;
  67 }