Fwd: Getting started with Coreboot on Intel Core

[Karl-Heinz Nirschl]

argl,

forward this to coreboot list too.

---------- Forwarded message ----------
From: Karl-Heinz Nirschl 
Date: 2010/3/8
Subject: Re: [coreboot] Getting started with Coreboot on Intel Core
To: Stefan Reinauer

Hi,

thanks for your reply. i thought
src/northbridge/intel/i945/early_init.c is executed after stage1_main
somewhere in real main. i've put a lot of postcodes bevor that
- one in front of stage1_main and and one in real_main. shouldn't i see these?

in my understanding execution takes the following way:
1 some generic x86 startup assembler
2 cache_as_ram.inc
3 cache_as_ram_disable.inc (stage1_main)
4 romstage.c (real_main) in mainboard dir
5 cpu_init
6 nb_init
-...

isn't that right? it looks like i hang between 2 und 3.

i'll go and check the toolschain in utils.

best regards,

khn

2010/3/8 Stefan Reinauer :
> On 3/8/10 6:36 PM, Karl-Heinz Nirschl wrote:
> > Hi,
> >
> > i should append:
> >
> > this is using a spi flash with 2 Megs and todays svn version.
> > i also tried with a 1 meg fhw with a somewhat earlier version of
> > coreboot. same problem.
> >
> > regards,
> >
> > karl
> >
> > 2010/3/8 Karl-Heinz Nirschl :
> > > Hi there,
> > >
> > > i'm new to coreboot and trying to port coreboot to a intel core based
> > > board. it's a u2500 with a ich7m and 945gm.
> > > i started with kontron 986lcd-m which should be quite similar but
> > > didn't have much success so far.
>
> Did you adapt the code for your SuperIO chip? Do you get any messages on
> the serial port?
> > > the board hangs with post code 0x23 (pci post card) which is bevor
> > > "call   stage1_main" in model_6ex/cache_as_ram.inc.
> > >
> > > as this is very early and the cpu never seem to come to stage1_main
> > > (in cache_as_ram_disable.c) i assume i have a problem with my
> > > toolchain.
>
> Try this one:
> Index: src/northbridge/intel/i945/early_init.c
>
> --- src/northbridge/intel/i945/early_init.c (revision 5196)
> +++ src/northbridge/intel/i945/early_init.c (working copy)
> @@ -867,7 +867,7 @@
> i945_setup_bars();
>
> /* Change port80 to LPC */
> RCBA32(GCS) &= (~0x04);
> //RCBA32(GCS) &= (~0x04);
>
> /* Just do it that way */
> RCBA32(0x2010) |= (1 << 10);
>
> Then post codes keep going to PCI instead of LPC and you should see
> where it's going.
> > > I build on ubuntu 8.04 (Hardy Heron) with nothing special.
> > >
> > > Any hints for a coreboot newbie? Which additional information could i
> > > provide to find the problem?
>
> You should use the reference toolchain in util/crossgcc