[LinuxBIOS] Setting up ethernet - help

[Joseph Smith]

OK I am having a problem setting up my ethernet controller in  
src/mainboard Config.lb.

Quoting from the i82830 Datasheet:
Logically, the ICH3-M appears as two PCI devices within a single  
physical component also residing on PCI bus #0. One of the ICH4  
devices residing on PCI Bus #0 is a PCI-to-PCI bridge. Logically, the  
primary side of the bridge resides on PCI bus #0 while the secondary  
side is the standard PCI expansion bus (PCI0). Also within the ICH3-M  
is another PCI Device, the LAN Controller, which resides on the  
standard PCI expansion bus (PCI0) down from the PCI-to-PCI bridge.

lspci -n
00:1e.0 0604: 8086:244e (rev 82)
01:08.0 0200: 8086:103a (rev 82)

lspci-tvv
-[0000:00]-+-1e.0-[0000:01]----08.0  Intel Corporation 82801DB PRO/100  
VE (CNR) Ethernet Controller

lspci-v
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 82)  
(prog-if 00 [Normal decode])
    Flags: bus master, fast devsel, latency 0
    Bus: primary=00, secondary=01, subordinate=01, sec-latency=64
    I/O behind bridge: 0000d000-0000dfff
    Memory behind bridge: ff700000-ff7fffff

01:08.0 Ethernet controller: Intel Corporation 82801DB PRO/100 VE  
(CNR) Ethernet Controller (rev 82)
    Flags: bus master, medium devsel, latency 64, IRQ 11
    Memory at ff7ff000 (32-bit, non-prefetchable) [size=4K]
    I/O ports at dc00 [size=64]
    Capabilities: [dc] Power Management version 2

How the heck do I set this up in Config.lb? HELP??

Thanks - Joe

[Peter Stuge]

On Tue, Aug 14, 2007 at 12:06:25PM -0400, Joseph Smith wrote:
> lspci-tvv
> -[0000:00]-+-1e.0-[0000:01]----08.0  Intel Corporation 82801DB PRO/100  
> VE (CNR) Ethernet Controller
>
> How the heck do I set this up in Config.lb? HELP??

Looks like it's been done before:

--8<-- src/mainboard/asus/mew-vm/Config.lb
chip southbridge/intel/i82801xx # Southbridge
  device pci 1e.0 on # PCI Bridge
    #chip drivers/pci/onboard
    #       device pci 1.0 on end
    #       register "rom_address" = "0xfff80000"
    #end
  end
..
end
-->8--

//Peter

[Joseph Smith]

Quoting Peter Stuge :
> On Tue, Aug 14, 2007 at 12:06:25PM -0400, Joseph Smith wrote:
> > lspci-tvv
> > -[0000:00]-+-1e.0-[0000:01]----08.0  Intel Corporation 82801DB PRO/100
> > VE (CNR) Ethernet Controller
> >
> > How the heck do I set this up in Config.lb? HELP??
>
> Looks like it's been done before:
>
> --8<-- src/mainboard/asus/mew-vm/Config.lb
> chip southbridge/intel/i82801xx # Southbridge
>   device pci 1e.0 on # PCI Bridge
>     #chip drivers/pci/onboard
>     #       device pci 1.0 on end
>     #       register "rom_address" = "0xfff80000"
>     #end
>   end
> ..
> end
> -->8--
>
> //Peter

Does that mean I would have to cat in a ethernet rom?
Also, wouldn't it be device pci 08.0 on end

Thanks - Joe

[Peter Stuge]

On Tue, Aug 14, 2007 at 12:30:14PM -0400, Joseph Smith wrote:
> > On Tue, Aug 14, 2007 at 12:06:25PM -0400, Joseph Smith wrote:
> > > lspci-tvv
> > > -[0000:00]-+-1e.0-[0000:01]----08.0  Intel Corporation 82801DB PRO/100
> > > VE (CNR) Ethernet Controller
> > >
> > > How the heck do I set this up in Config.lb? HELP??
> >
> > Looks like it's been done before:
> >
> > --8<-- src/mainboard/asus/mew-vm/Config.lb
> > chip southbridge/intel/i82801xx # Southbridge
> >   device pci 1e.0 on # PCI Bridge
> >     #chip drivers/pci/onboard
> >     #       device pci 1.0 on end
> >     #       register "rom_address" = "0xfff80000"
> >     #end
> >   end
> > ..
> > end
> > -->8--
>
> Does that mean I would have to cat in a ethernet rom?

Do you or the chip need one? Is there one in the factory BIOS or in a
standalone flash chip or none at all?
> Also, wouldn't it be device pci 08.0 on end

Yep. I only looked for the PCI-PCI bridge.

//Peter

[Joseph Smith]

Quoting Peter Stuge :
> On Tue, Aug 14, 2007 at 12:30:14PM -0400, Joseph Smith wrote:
> > > On Tue, Aug 14, 2007 at 12:06:25PM -0400, Joseph Smith wrote:
> > > > lspci-tvv
> > > > -[0000:00]-+-1e.0-[0000:01]----08.0  Intel Corporation 82801DB PRO/100
> > > > VE (CNR) Ethernet Controller
> > > >
> > > > How the heck do I set this up in Config.lb? HELP??
> > >
> > > Looks like it's been done before:
> > >
> > > --8<-- src/mainboard/asus/mew-vm/Config.lb
> > > chip southbridge/intel/i82801xx # Southbridge
> > >   device pci 1e.0 on # PCI Bridge
> > >     #chip drivers/pci/onboard
> > >     #       device pci 1.0 on end
> > >     #       register "rom_address" = "0xfff80000"
> > >     #end
> > >   end
> > > ..
> > > end
> > > -->8--
> >
> > Does that mean I would have to cat in a ethernet rom?
>
> Do you or the chip need one? Is there one in the factory BIOS or in a
> standalone flash chip or none at all?
> > Also, wouldn't it be device pci 08.0 on end
>
> Yep. I only looked for the PCI-PCI bridge.
>
> //Peter

I don't need an ethernet rom. Etherboot would take care of that  
correct? But in the config above it is alocating 0xfff80000 for a PCI  
rom, correct? My VGA bios is already using 0xfff80000.

Thanks - Joe

[Peter Stuge]

On Tue, Aug 14, 2007 at 12:54:04PM -0400, Joseph Smith wrote:
> > > Does that mean I would have to cat in a ethernet rom?
> >
> > Do you or the chip need one? Is there one in the factory BIOS or
> > in a standalone flash chip or none at all?
>
> I don't need an ethernet rom. Etherboot would take care of that
> correct?

For booting from network, yes. But maybe the hardware needs the ROM
for initialization? Where is the MAC address stored? Note there
doesn't seem to be any ROM even with the factory BIOS.
> But in the config above it is alocating 0xfff80000 for a PCI
> rom, correct?

Yes.
> My VGA bios is already using 0xfff80000.

If you would need one more ROM just change that address to match what
is in the flash chip. Add the size of the VGA BIOS and you'd have the
address for the next ROM image. But seems you don't need one.

//Peter

[Corey Osgood]

Peter Stuge wrote:
> On Tue, Aug 14, 2007 at 12:54:04PM -0400, Joseph Smith wrote:
> > > > Does that mean I would have to cat in a ethernet rom?
> > >
> > > Do you or the chip need one? Is there one in the factory BIOS or
> > > in a standalone flash chip or none at all?
> >
> > I don't need an ethernet rom. Etherboot would take care of that
> > correct?
>
> For booting from network, yes. But maybe the hardware needs the ROM
> for initialization? Where is the MAC address stored? Note there
> doesn't seem to be any ROM even with the factory BIOS.

MAC address is stored in hardware. I honestly couldn't tell you why that
code is there, but it shouldn't be, no rom is necessary. I'm guessing it
was left over from my attempt at getting vga to run, but I'm not sure
why I would have attached it to the ethernet (perhaps bad copy and
paste?). Anyone wishing to remove it feel free, one of these days I'll
wrap up that port, but no time for now.

-Corey

[Joseph Smith]

Quoting Corey Osgood :
> Peter Stuge wrote:
> > On Tue, Aug 14, 2007 at 12:54:04PM -0400, Joseph Smith wrote:
> > > > > Does that mean I would have to cat in a ethernet rom?
> > > >
> > > > Do you or the chip need one? Is there one in the factory BIOS or
> > > > in a standalone flash chip or none at all?
> > >
> > > I don't need an ethernet rom. Etherboot would take care of that
> > > correct?
> >
> > For booting from network, yes. But maybe the hardware needs the ROM
> > for initialization? Where is the MAC address stored? Note there
> > doesn't seem to be any ROM even with the factory BIOS.
>
> MAC address is stored in hardware.

Ok, so can I just do this with out specifing a PCI expansion rom address?

device pci 1e.0 on # PCI Bridge
      chip drivers/pci/onboard
             device pci 08.0 on end # Intel PRO/100 VE (CNR) Ethernet  
Controller
      end
    end

Thanks - Joe

[Peter Stuge]

On Wed, Aug 15, 2007 at 02:34:19AM -0400, Joseph Smith wrote:
> > MAC address is stored in hardware.
>
> Ok, so can I just do this with out specifing a PCI expansion rom address?
> device pci 1e.0 on # PCI Bridge
>   chip drivers/pci/onboard
>          device pci 08.0 on end # Intel PRO/100 VE (CNR) Ethernet  
>
> Controller
>       end
>     end

Looks good!

//Peter