| // SPDX-License-Identifier: GPL-2.0+ |
| /* |
| * Copyright (C) 2020 BayLibre, SAS |
| * Author: Neil Armstrong <narmstrong@baylibre.com> |
| */ |
| |
| #include <dm.h> |
| #include <env.h> |
| #include <init.h> |
| #include <net.h> |
| #include <asm/io.h> |
| #include <asm/arch/sm.h> |
| #include <asm/arch/eth.h> |
| #include <asm/arch/boot.h> |
| |
| #define EFUSE_MAC_OFFSET 20 |
| #define EFUSE_MAC_SIZE 12 |
| #define MAC_ADDR_LEN 6 |
| |
| int misc_init_r(void) |
| { |
| u8 mac_addr[MAC_ADDR_LEN + 1]; |
| char efuse_mac_addr[EFUSE_MAC_SIZE], tmp[3]; |
| ssize_t len; |
| |
| if (IS_ENABLED(CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG) && |
| meson_get_soc_rev(tmp, sizeof(tmp)) > 0) |
| env_set("soc_rev", tmp); |
| |
| if (!eth_env_get_enetaddr("ethaddr", mac_addr)) { |
| len = meson_sm_read_efuse(EFUSE_MAC_OFFSET, |
| efuse_mac_addr, EFUSE_MAC_SIZE); |
| if (len != EFUSE_MAC_SIZE) |
| return 0; |
| |
| /* MAC is stored in ASCII format, 1bytes = 2characters */ |
| for (int i = 0; i < 6; i++) { |
| tmp[0] = efuse_mac_addr[i * 2]; |
| tmp[1] = efuse_mac_addr[i * 2 + 1]; |
| tmp[2] = '\0'; |
| mac_addr[i] = hextoul(tmp, NULL); |
| } |
| mac_addr[MAC_ADDR_LEN] = '\0'; |
| |
| if (is_valid_ethaddr(mac_addr)) |
| eth_env_set_enetaddr("ethaddr", mac_addr); |
| else |
| meson_generate_serial_ethaddr(); |
| } |
| |
| return 0; |
| } |