Re: [coreboot] build failure: cannot move location counter backwards

[Darren Hart]

On 06/23/2011 10:18 AM, Stefan Reinauer wrote:
> On Tue, Jun 21, 2011 at 8:34 PM, Kevin O'Connor <[e-mail]> wrote:
> > On Mon, Jun 20, 2011 at 10:58:06PM -0700, Darren Hart wrote:
> > > On 06/20/2011 04:09 PM, Cristian Măgherușan-Stanciu wrote:
> > > > Hi,
> > > >
> > > > I documented the latest developments (git and crossgcc) at
> > > > http://www.coreboot.org/Build_HOWTO. Please someone double-check.
> > >
> > > My build succeeded following these instructions. As a first-time user,
> > > it would be helpful to have a quick-start guide which would be basically
> > > this wiki page + the steps necessary to do boot what I built in qemu.
> > > There are bits of that here:
> > >
> > > http://www.coreboot.org/QEMU
> >
> > Unfortunately, it looks like that page has old information on it.
>
> Which version of Qemu was that again?

$ qemu --version
QEMU PC emulator version 0.12.5 (qemu-kvm-0.12.5), Copyright (c)
2003-2008 Fabrice Bellard
> > > Is it integrated into the payload? Reading the
> > > QEMU_Build_tutorial, http://www.coreboot.org/QEMU_Build_Tutorial, led me
> > > to try:
> > >
> > > $ qemu -bios build/coreboot.rom -hda /dev/zero -serial stdio
> > >
> > > This resulted in something else entirely, the shell output terminating
> > > in the following:
> > >
> > > coreboot memory table:
> > >  0. 0000000000000000-0000000000000fff: CONFIGURATION TABLES
> > >  1. 0000000000001000-000000000009ffff: RAM
> > >  2. 00000000000c0000-0000000017feffff: RAM
> > >  3. 0000000017ff0000-0000000017ffffff: CONFIGURATION TABLES
> > >  4. 00000000ff800000-00000000ffffffff: RESERVED
> > > Wrote coreboot table at: 17ff1400 - 17ff15c4  checksum 6c1c
> > > coreboot table: 452 bytes.
> > > Multiboot Information structure has been written.
> > >  0. FREE SPACE 17ff3400 0000cc00
> > >  1. GDT        17ff0200 00000200
> > >  2. IRQ TABLE  17ff0400 00001000
> > >  3. COREBOOT   17ff1400 00002000
> > > Check CBFS header at fffcfc39
> > > magic is 386f92fa
> > > ERROR: No valid CBFS header found!
> > > CBFS:  Could not find file fallback/payload
> > > Boot failed.
> >
> > You're now running coreboot, but coreboot was unable to find your
> > payload (eg, SeaBIOS).
>
> However, it seems the CBFS header is corrupted, so it is not even
> checking for a payload file.
>
> Not sure why, on first sight.

Alright. What I'm trying to do here is demonstrate a known working state
and use-case of coreboot. Once I have that working I want to start
looking at getting it working on my hardware. Is there a better
known-working state of coreboot I can use? I'd prefer to stick with qemu
for this part.

-- 
Darren Hart
Intel Open Source Technology Center
Yocto Project - Linux Kernel