1// SPDX-License-Identifier: GPL-2.0+ 2/* 3 * Copyright (C) 2016 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/gx.h> 14#include <asm/arch/sm.h> 15#include <asm/arch/eth.h> 16#include <asm/arch/mem.h> 17 18#define EFUSE_SN_OFFSET 20 19#define EFUSE_SN_SIZE 16 20#define EFUSE_MAC_OFFSET 52 21#define EFUSE_MAC_SIZE 6 22 23int misc_init_r(void) 24{ 25 u8 mac_addr[EFUSE_MAC_SIZE + 1]; 26 char serial[EFUSE_SN_SIZE + 1]; 27 ssize_t len; 28 29 if (!eth_env_get_enetaddr("ethaddr", mac_addr)) { 30 len = meson_sm_read_efuse(EFUSE_MAC_OFFSET, 31 mac_addr, EFUSE_MAC_SIZE); 32 mac_addr[len] = '\0'; 33 if (len == EFUSE_MAC_SIZE && is_valid_ethaddr(mac_addr)) 34 eth_env_set_enetaddr("ethaddr", mac_addr); 35 else 36 meson_generate_serial_ethaddr(); 37 } 38 39 if (!env_get("serial#")) { 40 len = meson_sm_read_efuse(EFUSE_SN_OFFSET, serial, 41 EFUSE_SN_SIZE); 42 serial[len] = '\0'; 43 if (len == EFUSE_SN_SIZE) 44 env_set("serial#", serial); 45 } 46 47 return 0; 48} 49