[coreboot] kernel payload

[ron minnich]

First off, what board is this on?

On Fri, May 5, 2017 at 10:12 AM Healer64 via coreboot <coreboot at coreboot.org>
wrote:

> I've looked through all the docs I can find on this, but there doesn't
> seem to be much available. Hopefully some of you can help answer my
> questions. My distribution includes a vmlinuz kernel. Do I need to compile
> a custom bzimage kernel or will the stock kernel suffice?
>
> I am using lvm on a dmcrypted disk for the root filesystem. Presumably
> these binaries and helper scripts will be needed in the initrd. So far the
> only help I've seen on creating the initrd for the payload is Ron's email
> to this list where he says
>
> "Your best bet is to do the standard trivial initramfs with a simple
> program: main(){printf("hi\n"); while (1);} Let's pretend it's called
> mymain.c cc -o mymain -static mymain.c put that in your prototype root file
> system with the name init. make sure you create /dev/console. Then bundle
> it all up with cpio and you've got an initramfs"
>
> That seems to describe more of a shim than a true initrd. Also he mentions
> initramfs whereas menuconfig asks for initrd. Which is correct? I don't see
> any reference to filesystem drivers in Ron's email, but surely they are
> required to mount the root. I'm guessing this is a test example that is not
> intended to boot.
>
> Can anyone provide help or instructions on an actual bootable
> initrd/initramfs? Can a pointer to the initramfs in /boot be used? What
> kind of size will it be? My rom is limited to 8Mb and the kernel is over
> 5Mb.
>
>
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