1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Copyright 2017 NXP
4  *
5  * Peng Fan <peng.fan@nxp.com>
6  */
7 
8 #include <common.h>
9 #include <asm/arch/imx-regs.h>
10 #include <asm/io.h>
11 #include <asm/arch/sys_proto.h>
12 #include <errno.h>
13 
14 struct imx_mac_fuse {
15 	u32 mac_addr0;
16 	u32 rsvd0[3];
17 	u32 mac_addr1;
18 	u32 rsvd1[3];
19 	u32 mac_addr2;
20 	u32 rsvd2[7];
21 };
22 
23 #define MAC_FUSE_MX6_OFFSET	0x620
24 #define MAC_FUSE_MX7_OFFSET	0x640
25 
imx_get_mac_from_fuse(int dev_id,unsigned char * mac)26 void imx_get_mac_from_fuse(int dev_id, unsigned char *mac)
27 {
28 	struct imx_mac_fuse *fuse;
29 	u32 offset;
30 	bool has_second_mac;
31 
32 	offset = is_mx6() ? MAC_FUSE_MX6_OFFSET : MAC_FUSE_MX7_OFFSET;
33 	fuse = (struct imx_mac_fuse *)(ulong)(OCOTP_BASE_ADDR + offset);
34 	has_second_mac = is_mx7() || is_mx6sx() || is_mx6ul() || is_mx6ull();
35 
36 	if (has_second_mac && dev_id == 1) {
37 		u32 value = readl(&fuse->mac_addr2);
38 
39 		mac[0] = value >> 24;
40 		mac[1] = value >> 16;
41 		mac[2] = value >> 8;
42 		mac[3] = value;
43 
44 		value = readl(&fuse->mac_addr1);
45 		mac[4] = value >> 24;
46 		mac[5] = value >> 16;
47 
48 	} else {
49 		u32 value = readl(&fuse->mac_addr1);
50 
51 		mac[0] = value >> 8;
52 		mac[1] = value;
53 
54 		value = readl(&fuse->mac_addr0);
55 		mac[2] = value >> 24;
56 		mac[3] = value >> 16;
57 		mac[4] = value >> 8;
58 		mac[5] = value;
59 	}
60 }
61