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Christian Hewittaf47f622020-12-18 08:45:42 +00001// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Copyright (C) 2020 BayLibre, SAS
4 * Author: Neil Armstrong <narmstrong@baylibre.com>
5 */
6
Christian Hewittaf47f622020-12-18 08:45:42 +00007#include <dm.h>
8#include <env.h>
9#include <init.h>
10#include <net.h>
11#include <asm/io.h>
12#include <asm/arch/sm.h>
13#include <asm/arch/eth.h>
14#include <asm/arch/boot.h>
15
16#define EFUSE_MAC_OFFSET 20
17#define EFUSE_MAC_SIZE 12
18#define MAC_ADDR_LEN 6
19
20int misc_init_r(void)
21{
Neil Armstrongbfbe81a2024-03-20 09:46:11 +010022 u8 mac_addr[MAC_ADDR_LEN + 1];
Christian Hewittaf47f622020-12-18 08:45:42 +000023 char efuse_mac_addr[EFUSE_MAC_SIZE], tmp[3];
24 ssize_t len;
25
26 if (IS_ENABLED(CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG) &&
27 meson_get_soc_rev(tmp, sizeof(tmp)) > 0)
28 env_set("soc_rev", tmp);
29
Christian Hewittaf47f622020-12-18 08:45:42 +000030 if (!eth_env_get_enetaddr("ethaddr", mac_addr)) {
31 len = meson_sm_read_efuse(EFUSE_MAC_OFFSET,
32 efuse_mac_addr, EFUSE_MAC_SIZE);
33 if (len != EFUSE_MAC_SIZE)
34 return 0;
35
36 /* MAC is stored in ASCII format, 1bytes = 2characters */
37 for (int i = 0; i < 6; i++) {
38 tmp[0] = efuse_mac_addr[i * 2];
39 tmp[1] = efuse_mac_addr[i * 2 + 1];
40 tmp[2] = '\0';
Simon Glass3ff49ec2021-07-24 09:03:29 -060041 mac_addr[i] = hextoul(tmp, NULL);
Christian Hewittaf47f622020-12-18 08:45:42 +000042 }
Neil Armstrongbfbe81a2024-03-20 09:46:11 +010043 mac_addr[MAC_ADDR_LEN] = '\0';
Christian Hewittaf47f622020-12-18 08:45:42 +000044
45 if (is_valid_ethaddr(mac_addr))
46 eth_env_set_enetaddr("ethaddr", mac_addr);
47 else
48 meson_generate_serial_ethaddr();
49 }
50
51 return 0;
52}