imx/common/imx6.txt

1 U-Boot for Freescale i.MX6
3 This file contains information for the port of U-Boot to the Freescale i.MX6
7 -----------------------------------
9 1.1 MAC Address: It is stored in fuse bank 4, with the 32 lsbs in word 2 and the
11     For i.MX6SX and i.MX6UL, they have two MAC addresses. The second MAC address
17 For reading the MAC address fuses on a MX6Q:
19 - The MAC address is stored in two fuse addresses (the fuse addresses are
22 0x620[31:0] - MAC_ADDR[31:0]
23 0x630[15:0] - MAC_ADDR[47:32]
28 Fuse address for the lower MAC address: 0x620
29 Base address for the fuses: 0x400
31 (0x620 - 0x400)/0x10 = 0x22 = 34 decimal
40 And the U-Boot command would be:
47 Doing the same for the upper MAC address:
49 Fuse address for the upper MAC address: 0x630
50 Base address for the fuses: 0x400
52 (0x630 - 0x400)/0x10 = 0x23 = 35 decimal
61 And the U-Boot command would be:
74 - The 'bank' and 'word' numbers can be easily obtained from the mx6 Reference
77 Rev. 1, 04/2013" document. For example, for the MAC fuses we have:
79 Address:
80 21B_C620	Value of OTP Bank4 Word2 (MAC Address)(OCOTP_MAC0)
82 21B_C630	Value of OTP Bank4 Word3 (MAC Address)(OCOTP_MAC1)
84 - The command '=> fuse read 4 2 2' reads the whole MAC addresses at once: