efusemem

Tool to read/write efuses through NVMEM on NXP based modules. Currently supported SoC's:

• i.MX6ULL
• i.MX6Q
• i.MX8MM
• i.MX8MP

Product State

Beta

• Features testet on i.MX6Q and i.MX8MP
• Further tests on production line

Dependencies

For building efusemem from source the following dependencies are needed:

• Meson Build <https://mesonbuild.com/>

Building

Build efusemem using the `Meson Build system https://mesonbuild.com

meson setup build meson compile -C build

Running

efusemem read/write/lock [fhkmryv] <options> <path_to_nvmem>

Read/Write options:
  -k --hash     read/write HASH from commandline
  -f --file     write HASH from file
  -m --mac      read/write MAC address from commandline
  -r --revoke   revoke keys
Lock options:
  --secureboot	Enable Secureboot and lock HASH
  --sdp         lock serial download port
  --jtag        lock (disable) JTAG port
General options:
  -y --force    bypass user confirm. Say yes to all
  -h --help     print help info
  -v --version  print version of the program
path_to_nvmem
  (default: /sys/bus/nvmem/devices/imx-ocotp0/nvmem)