[coreboot] kernel payload

[ron minnich]

Per my other question, did you try to burn a totally standard coreboot and
see it work?

On Fri, May 5, 2017 at 10:39 AM Healer64 <Healer64 at protonmail.com> wrote:

> An auron yuna chromebook.
>
>
> Sent with ProtonMail <https://protonmail.com> Secure Email.
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> -------- Original Message --------
> Subject: Re: [coreboot] kernel payload
> Local Time: May 5, 2017 11:18 AM
> UTC Time: May 5, 2017 5:18 PM
> From: rminnich at gmail.com
> To: Healer64 <Healer64 at protonmail.com>, coreboot at coreboot.org <
> coreboot at coreboot.org>
>
> 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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