1// SPDX-License-Identifier: GPL-2.0+ 2/* 3 * (C) Copyright 2016 Beniamino Galvani <b.galvani@gmail.com> 4 */ 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/sm.h> 14#include <asm/arch/eth.h> 15#include <asm/arch/mem.h> 16 17#define EFUSE_SN_OFFSET 20 18#define EFUSE_SN_SIZE 16 19#define EFUSE_MAC_OFFSET 52 20#define EFUSE_MAC_SIZE 6 21 22int misc_init_r(void) 23{ 24 u8 mac_addr[EFUSE_MAC_SIZE + 1]; 25 char serial[EFUSE_SN_SIZE + 1]; 26 ssize_t len; 27 28 if (!eth_env_get_enetaddr("ethaddr", mac_addr)) { 29 len = meson_sm_read_efuse(EFUSE_MAC_OFFSET, 30 mac_addr, EFUSE_MAC_SIZE); 31 mac_addr[len] = '\0'; 32 if (len == EFUSE_MAC_SIZE && is_valid_ethaddr(mac_addr)) 33 eth_env_set_enetaddr("ethaddr", mac_addr); 34 else 35 meson_generate_serial_ethaddr(); 36 } 37 38 if (!env_get("serial#")) { 39 len = meson_sm_read_efuse(EFUSE_SN_OFFSET, serial, 40 EFUSE_SN_SIZE); 41 serial[len] = '\0'; 42 if (len == EFUSE_SN_SIZE) 43 env_set("serial#", serial); 44 } 45 46 return 0; 47} 48