[LinuxBIOS] FW: 440BX progress / superio w83977tf-aw

[Idwer Vollering]

Forgot to attach configfiles+minicom-log
From: [e-mail]
To: [e-mail]
Date: Tue, 2 Oct 2007 13:07:00 +0000
CC: [e-mail]
Subject: [LinuxBIOS]  440BX progress / superio w83977tf-aw

http://linuxbios.org/pipermail/linuxbios/2006-November/017262.html

It boots (v2 r2811), but serial outputs says 'Can not load ELF Image.' which is correct because i didn't yet manage to get filo appended as a payload from targets/asus/p2b/Config.lb.

What options in Config.lb must be set to create enough space to include filo.elf (about 94 KB) using both normal and fallback sections; option ROM_IMAGE_SIZE = (some_substracted_size) * 1024 ?

Also, superio (from r2811) won't recognize the onboard winbond w83977tf-aw.
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[Uwe Hermann]

On Tue, Oct 02, 2007 at 01:21:23PM +0000, Idwer Vollering wrote:
> http://linuxbios.org/pipermail/linuxbios/2006-November/017262.html
>
> It boots (v2 r2811), but serial outputs says 'Can not load ELF Image.' which is correct because i didn't yet manage to get filo appended as a payload from targets/asus/p2b/Config.lb.
>
> What options in Config.lb must be set to create enough space to include filo.elf (about 94 KB) using both normal and fallback sections; option ROM_IMAGE_SIZE = (some_substracted_size) * 1024 ?

No changes needed in Config.lb, I suggest you simply make filo smaller
for now. Disable all unneeded options (ReiserFS, CDROM support, XFS
support, all debugging, etc). You only need very few of the options.
My filo.elf is 54KB, which is small enough for pretty much all boards.
> Also, superio (from r2811) won't recognize the onboard winbond w83977tf-aw.

It is (partly) recognized, otherwise you wouldn't get any serial output.

The Config.lb stuff below is only executed very late in the boot
process, but the serial console init (which needs the Super I/O) happens
earlier. As you have serial output, that code works ok.
> chip northbridge/intel/i440bx
>         device pci_domain 0 on
>                 device pci 0.0 on end # host bridge
>                 device pci 1.0 on end # pci bridge / agp device/bridge
>                         chip southbridge/intel/i82371eb # southbridge
>                                 device pci 4.0 on end # isa bridge
>                                         chip superio/winbond/w83977tf # superio, winbond w83977tf-aw
>                                                 device pci 4.1 on end # ide interface
>                                                 device pci 4.2 on end # usb controller
>                                                 device pci 4.3 on end # acpi bridge

This looks broken. The PCI devices should not be inside the Super I/O section.
Instead the superio-related stuff should be there. Have a look at some
other boards for examples. The output of 'lspnp -v' (from original BIOS,
and with all hardware attached, e.g. PS/2 keyboard, PS/2 mouse, etc)
should give you some hints (please also post it here).

I'll try to dig out my P2B tomorrow or so and see how far I get, and
maybe post some patch to improve it a bit. Please note that the 440BX
code is still not very generic, it'll probably not work for this board
(only the Tyan S1846 is confirmed to work so far). Fixing this is on
my (huge) TODO list.

Uwe.

[LinuxBIOS] 440BX progress / superio w83977tf-aw

[Idwer Vollering]

> Date: Wed, 3 Oct 2007 01:54:50 +0200
> From: [e-mail]
> To: [e-mail]
> CC: [e-mail]
> Subject: Re: FW: [LinuxBIOS]  440BX progress / superio w83977tf-aw
>
> On Tue, Oct 02, 2007 at 01:21:23PM +0000, Idwer Vollering wrote:
> > http://linuxbios.org/pipermail/linuxbios/2006-November/017262.html
> >
> > It boots (v2 r2811), but serial outputs says 'Can not load ELF Image.' which is correct because i didn't yet manage to get filo appended as a payload from targets/asus/p2b/Config.lb.
> >
> > What options in Config.lb must be set to create enough space to include filo.elf (about 94 KB) using both normal and fallback sections; option ROM_IMAGE_SIZE = (some_substracted_size) * 1024 ?
>
> No changes needed in Config.lb, I suggest you simply make filo smaller
> for now. Disable all unneeded options (ReiserFS, CDROM support, XFS
> support, all debugging, etc). You only need very few of the options.
> My filo.elf is 54KB, which is small enough for pretty much all boards.
> > Also, superio (from r2811) won't recognize the onboard winbond w83977tf-aw.
>
> It is (partly) recognized, otherwise you wouldn't get any serial output.
>
> The Config.lb stuff below is only executed very late in the boot
> process, but the serial console init (which needs the Super I/O) happens
> earlier. As you have serial output, that code works ok.
> > chip northbridge/intel/i440bx
> >         device pci_domain 0 on
> >                 device pci 0.0 on end # host bridge
> >                 device pci 1.0 on end # pci bridge / agp device/bridge
> >                         chip southbridge/intel/i82371eb # southbridge
> >                                 device pci 4.0 on end # isa bridge
> >                                         chip superio/winbond/w83977tf # superio, winbond w83977tf-aw
> >                                                 device pci 4.1 on end # ide interface
> >                                                 device pci 4.2 on end # usb controller
> >                                                 device pci 4.3 on end # acpi bridge

according to src/mainboard/tyan/s1846/Config.lb, this should be it:

chip northbridge/intel/i440bx # northbridge
    device pci_domain 0 on
        device pci 0.0 on end # host bridge
        device pci 1.0 on end # agp bridge

chip southbridge/intel/i82371eb # southbridge
            device pci 4.0 on # isa bridge
                chip superio/winbond/w83977tf # superio, winbond w83977tf-aw
                end
            end

device pci 4.1 on end # ide interface
            device pci 4.2 on end # usb controller
            device pci 4.3 on end # acpi bridge
            register "ide0_enable" = "1"
            register "ide1_enable" = "1"
        end
    end

chip cpu/intel/slot_2
    end
end
> This looks broken. The PCI devices should not be inside the Super I/O section.
> Instead the superio-related stuff should be there. Have a look at some
> other boards for examples. The output of 'lspnp -v' (from original BIOS,
> and with all hardware attached, e.g. PS/2 keyboard, PS/2 mouse, etc)
> should give you some hints (please also post it here).

"lspnp: /proc/bus/pnp not available" (asus p2b bios v1012)

The kernel used is compiled with CONFIG_PNPBIOS=y
> I'll try to dig out my P2B tomorrow or so and see how far I get, and
> maybe post some patch to improve it a bit. Please note that the 440BX
> code is still not very generic, it'll probably not work for this board
> (only the Tyan S1846 is confirmed to work so far). Fixing this is on
> my (huge) TODO list.

Where can i change the (hardcoded i believe) ramspeed/timings ?
> Uwe.
>
> http://www.hermann-uwe.de  | http://www.holsham-traders.de
> http://www.crazy-hacks.org | http://www.unmaintained-free-software.org

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