1 /* 2 * Copyright (C) 2016 BayLibre, SAS 3 * Author: Neil Armstrong <narmstrong@baylibre.com> 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 8 #include <common.h> 9 #include <dm.h> 10 #include <asm/io.h> 11 #include <asm/arch/gxbb.h> 12 #include <asm/arch/sm.h> 13 #include <phy.h> 14 15 #define EFUSE_SN_OFFSET 20 16 #define EFUSE_SN_SIZE 16 17 #define EFUSE_MAC_OFFSET 52 18 #define EFUSE_MAC_SIZE 6 19 20 int board_init(void) 21 { 22 return 0; 23 } 24 25 int misc_init_r(void) 26 { 27 u8 mac_addr[EFUSE_MAC_SIZE]; 28 char serial[EFUSE_SN_SIZE]; 29 ssize_t len; 30 31 /* Set RMII mode */ 32 out_le32(GXBB_ETH_REG_0, GXBB_ETH_REG_0_INVERT_RMII_CLK | 33 GXBB_ETH_REG_0_CLK_EN); 34 35 /* Use Internal PHY */ 36 out_le32(GXBB_ETH_REG_2, 0x10110181); 37 out_le32(GXBB_ETH_REG_3, 0xe40908ff); 38 39 /* Enable power and clock gate */ 40 setbits_le32(GXBB_GCLK_MPEG_1, GXBB_GCLK_MPEG_1_ETH); 41 clrbits_le32(GXBB_MEM_PD_REG_0, GXBB_MEM_PD_REG_0_ETH_MASK); 42 43 if (!eth_env_get_enetaddr("ethaddr", mac_addr)) { 44 len = meson_sm_read_efuse(EFUSE_MAC_OFFSET, 45 mac_addr, EFUSE_MAC_SIZE); 46 if (len == EFUSE_MAC_SIZE && is_valid_ethaddr(mac_addr)) 47 eth_env_set_enetaddr("ethaddr", mac_addr); 48 } 49 50 if (!env_get("serial#")) { 51 len = meson_sm_read_efuse(EFUSE_SN_OFFSET, serial, 52 EFUSE_SN_SIZE); 53 if (len == EFUSE_SN_SIZE) 54 env_set("serial#", serial); 55 } 56 57 return 0; 58 } 59