The wiki is being retired!

Documentation is now handled by the same processes we use for code: Add something to the Documentation/ directory in the coreboot repo, and it will be rendered to https://doc.coreboot.org/. Contributions welcome!

Coreboot has various possible consoles:

Output name	direction (from the target coreboot machine point of view)	software compatibility
Serial console	input output	seabios grub as a payload grub ran after seabios libpayload linux kernel (loaded after the payload) most GNU/Linux init systems(sysvinit, systemd, upstart etc...)
Console Over EHCI debug port	input? output
Console trough spkmodem	output only
Network console	output
Cbmem console	output only

Other output:

POST Card
Tracing the Flash chip's access?

Console and outputs

The wiki is being retired!

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