srktool - number of fuses per word

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srktool - number of fuses per word

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antonio_santagi
Contributor IV

Hello, 

I am using imX8M mini.

when launching srktool  , what setting should I choose for the number of fuses per word ? 8 fuses per word or 32 fuses per word ?

-f, --fuse_format <format>:
Optional, Data format of the SRK efuse binary file. The
format may be selected by setting <format> to either:
- 0: 8 fuses per word, ex: 00 00 00 0a 00 00 00 01 ...
- 1 (default): 32 fuses per word, ex: 0a 01 ff 8e

thank you

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2 Replies

554 Views
Yuri
NXP Employee
NXP Employee

 

Hello,

 

   default  value for -f parameter  - 1 (default): 32 fuses per word  is usually used.

 

       $ ../linux64/bin/srktool -h 4 -t SRK_1_2_3_4_table.bin -e SRK_1_2_3_4_fuse.bin -d

       sha256 -c SRK1_sha256_2048_65537_v3_ca_crt.pem,

       SRK2_sha256_2048_65537_v3_ca_crt.pem,

       SRK3_sha256_2048_65537_v 3_ca_crt.pem,

       SRK4_sha256_2048_65537_v3_ca_crt.pem

 

Have a great day,

Yuri.

 

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554 Views
antonio_santagi
Contributor IV

Ok, I will use 32 fuses per word then, thank you.