1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Copyright (C) 2021 Vyacheslav Bocharov
4  * Author: Vyacheslav Bocharov <adeep@lexina.in>
5  */
6 
7 #include <dm.h>
8 #include <env.h>
9 #include <init.h>
10 #include <net.h>
11 #include <asm/io.h>
12 #include <asm/arch/axg.h>
13 #include <asm/arch/sm.h>
14 #include <asm/arch/eth.h>
15 #include <asm/arch/mem.h>
16 #include <u-boot/crc.h>
17 
misc_init_r(void)18 int misc_init_r(void)
19 {
20 	u8 mac_addr[ARP_HLEN + 1];
21 	char serial[SM_SERIAL_SIZE];
22 	u32 sid;
23 
24 	if (!meson_sm_get_serial(serial, SM_SERIAL_SIZE)) {
25 		sid = crc32(0, (unsigned char *)serial, SM_SERIAL_SIZE);
26 		/* Ensure the NIC specific bytes of the mac are not all 0 */
27 		if ((sid & 0xffff) == 0)
28 			sid |= 0x800000;
29 
30 		/* OUI registered MAC address */
31 		mac_addr[0] = 0x10;
32 		mac_addr[1] = 0x27;
33 		mac_addr[2] = 0xBE;
34 		mac_addr[3] = (sid >> 16) & 0xff;
35 		mac_addr[4] = (sid >>  8) & 0xff;
36 		mac_addr[5] = (sid >>  0) & 0xff;
37 		mac_addr[ARP_HLEN] = '\0';
38 
39 		eth_env_set_enetaddr("ethaddr", mac_addr);
40 	}
41 
42 	return 0;
43 }
44