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 misc_init_r(void)22int misc_init_r(void) 23 { 24 u8 mac_addr[EFUSE_MAC_SIZE]; 25 char serial[EFUSE_SN_SIZE]; 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 if (len == EFUSE_MAC_SIZE && is_valid_ethaddr(mac_addr)) 32 eth_env_set_enetaddr("ethaddr", mac_addr); 33 } 34 35 if (!env_get("serial#")) { 36 len = meson_sm_read_efuse(EFUSE_SN_OFFSET, serial, 37 EFUSE_SN_SIZE); 38 if (len == EFUSE_SN_SIZE) 39 env_set("serial#", serial); 40 } 41 42 return 0; 43 } 44