Stewart Smith of IBM has a new blog post about adding ZMODEM support to OpenPOWER firmware.
From checkin: This enables the use of rz/sz to send/receive files using ZMODEM. This enables error detection and correction when using the console to transfer files to/from the host.
From blog:
ZMODEM saves the day! Or, why my firmware for a machine with a CPU from 2017 contains a serial file transfer protocol from the 1980s
Recently, I added the package lrzsz to op-build in this commit. This package provides the rz and sz commands – for receive zmodem and send zmodem respectively. For those who don’t know, op-build builds a firmware image for OpenPOWER machines, and adding this package adds the commands to the petitboot shell (the busybox environment you get when you “exit to shell” from the boot menu).[…]
https://en.wikipedia.org/wiki/ZMODEM
What’s next, a UEFI runtime service for Kermit, using CKermit? UEFI NNTP Boot, using signed images on alt.binaries.firmware.*? 🙂
Firmware Security 