pmh7tool

This is a tool to dump, read from, write to PMH7 registers on Lenovo ThinkPad laptops.

This tool is a part of the coreboot project.

Usage

-h, --help:  print help
-d, --dump:  hexdump registers
-w, --write <addr> <data>:  write <data> to register <addr>
-r, --read <addr>:  read from register <addr>
-b, --read-bit <addr> <bit>: read bit <bit> in register <addr>
-c, --clear-bit <addr> <bit>: clear bit <bit> in register <addr>
-s, --set-bit <addr> <bit>: set bit <bit> in register <addr>

Attention

Writing to PMH7 registers is very dangerous, as you directly manipulate the power rails, enable lines, interrupt lines or something else of the device. Proceed with caution.