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 <environment.h> 10 #include <asm/io.h> 11 #include <asm/arch/gx.h> 12 #include <asm/arch/sm.h> 13 #include <asm/arch/eth.h> 14 #include <asm/arch/mem.h> 15 16 #define EFUSE_SN_OFFSET 20 17 #define EFUSE_SN_SIZE 16 18 #define EFUSE_MAC_OFFSET 52 19 #define EFUSE_MAC_SIZE 6 20 21 int misc_init_r(void) 22 { 23 u8 mac_addr[EFUSE_MAC_SIZE]; 24 char serial[EFUSE_SN_SIZE]; 25 ssize_t len; 26 27 meson_eth_init(PHY_INTERFACE_MODE_RMII, 28 MESON_USE_INTERNAL_RMII_PHY); 29 30 if (!eth_env_get_enetaddr("ethaddr", mac_addr)) { 31 len = meson_sm_read_efuse(EFUSE_MAC_OFFSET, 32 mac_addr, EFUSE_MAC_SIZE); 33 if (len == EFUSE_MAC_SIZE && is_valid_ethaddr(mac_addr)) 34 eth_env_set_enetaddr("ethaddr", mac_addr); 35 } 36 37 if (!env_get("serial#")) { 38 len = meson_sm_read_efuse(EFUSE_SN_OFFSET, serial, 39 EFUSE_SN_SIZE); 40 if (len == EFUSE_SN_SIZE) 41 env_set("serial#", serial); 42 } 43 44 return 0; 45 } 46