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/mem.h>
13 #include <asm/arch/sm.h>
14 #include <asm/arch/eth.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
misc_init_r(void)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_RGMII, 0);
28
29 /* Reset PHY on GPIOZ_14 */
30 clrbits_le32(GX_GPIO_EN(3), BIT(14));
31 clrbits_le32(GX_GPIO_OUT(3), BIT(14));
32 mdelay(10);
33 setbits_le32(GX_GPIO_OUT(3), BIT(14));
34
35 if (!eth_env_get_enetaddr("ethaddr", mac_addr)) {
36 len = meson_sm_read_efuse(EFUSE_MAC_OFFSET,
37 mac_addr, EFUSE_MAC_SIZE);
38 if (len == EFUSE_MAC_SIZE && is_valid_ethaddr(mac_addr))
39 eth_env_set_enetaddr("ethaddr", mac_addr);
40 }
41
42 if (!env_get("serial#")) {
43 len = meson_sm_read_efuse(EFUSE_SN_OFFSET, serial,
44 EFUSE_SN_SIZE);
45 if (len == EFUSE_SN_SIZE)
46 env_set("serial#", serial);
47 }
48
49 return 0;
50 }
51