T2080 OTPMK Fuse Programming

VismaySharma — Fri, 05 Jul 2024 03:51:46 GMT

Hi

I am trying to perform OTPMK fuse programming for T2080 RDB. As per NXP recommendations the pre fusing steps have been performed setting of clock and shorting of jumper onboard. What are the steps to be followed when fusing the OTPMK values as well as any specific access class which must be used to access the mirror registers while fusing.

Thanks & Regards
Vismay

Re: T2080 OTPMK Fuse Programming

yipingwang — Wed, 10 Jul 2024 08:22:59 GMT

1. Generate otpmk key with the following procedure.

$ git clone https://github.com/nxp-qoriq/cst.git

$ cd cst/

$ make

$ ./gen_otpmk_drbg -b 2

2. Program OTPMK key to fuse with the following procedure.

Connect the J9 jumper with a jumper wire.

Please program OTPMK fuse using ccs following instruction

config cc cwtap

ccs::config_chain t2080

ccs::write_mem 0 0xfe0e821c 4 0 0xcd5543ad

ccs::write_mem 0 0xfe0e8220 4 0 0x219e0fff

ccs::write_mem 0 0xfe0e8224 4 0 0xf26ea164

ccs::write_mem 0 0xfe0e8228 4 0 0x2a3a5c20

ccs::write_mem 0 0xfe0e822c 4 0 0x6616ab67

ccs::write_mem 0 0xfe0e8230 4 0 0x6ed980dd

ccs::write_mem 0 0xfe0e8234 4 0 0x20ee8c90

ccs::write_mem 0 0xfe0e8238 4 0 0x53e60691

ccs::display_mem 0 0xfe314014 4 0 1 (please check the second nibble is 0)

80000b00

ccs::display_mem 0 0xfe0e8024 4 0 1 (please check the value is 0)

Please make sure there is no problem with the above two registers, then run the following command to write values in mirror registers to fuse array.

ccs::write_mem 0 0xfe0e8020 4 0 0x00000002 (set bit SFP_INGR)

Reset the target board and check whether the value of 0xfe314014 is 80000b00.

topic Re: T2080 OTPMK Fuse Programming in T-Series

T2080 OTPMK Fuse Programming

Re: T2080 OTPMK Fuse Programming