Re: [LinuxBIOS] Current Status of DFI P2XBL (440bx w/ w83977ew)

[roger]

On Thu, 2007-05-10 at 00:08 -0400, Corey Osgood wrote:
> roger wrote:
> > BTW: I've set up my asus/p2b/auto.c to mimmick the tyan/s1846/auto.c
> >
> > So DRAM *should* be working and getting to at least elfboot.
> >
> > Only things I can think of would be DRAM timing too.
>
> roger, only test with one dimm for now, single sided if possible, and in
> the first slot. It's very possible that dram init is only working for
> the first dimm. Once that's working, try to get the rest going. And
> afaik, the timings being used right now (CL3) should be safe/sane for
> any sdram dimm. Also check that your dimm(s) are capable of running the
> same speed as your cpu's frontside bus, I haven't looked at the code
> recently but I'm going to guess that it's still set up to statically set
> the ram to the same speed as the fsb. When I was working with it, I was
> using an old 466MHz celeron (66MHz*7) and PC100 ram to make sure this
> was a non-issue. Let me know if you need a cpu with a slower fsb, I must
> have a few dozen old celerons and pentium 2s kicking around, socket 370
> and slot 1.
>
> Also, asus p2b's auto.c is fixed in the latest revisions ;)
>
> Good luck!
> -Corey

Thanks for the Good luck! .. think it helped.. noticed, as usual, I was
using DIMM Bank 2 instead of 0.  Now it boots.

So the main issue, DIMM Banks 1 & 2 (for this 3 DIMM Bank board) needs
to be empty and only one DIMM in Bank 0!

Here's proof.  Granted, it only shows "Jumping to Linuxbios"

Ram4
Testing DRAM : 00000000-0009ffff
DRAM fill: 00000000-0009ffff
000a0000 
DRAM filled
DRAM verify: 00000000-0009ffff
000a0000 
DRAM range verified.
Done.
Testing DRAM : 00100000-007c0000
DRAM fill: 00100000-007c0000
007c0000 
DRAM filled
DRAM verify: 00100000-007c0000
007c0000 
DRAM range verified.
Done.
Copying LinuxBIOS to RAM.
Jumping to LinuxBIOS.
LinuxBIOS-2.0.0.0Fallback Wed May  9 15:55:10 PDT 2007 booting...

I should be seeing next roughly "end 35a51f17, start 1" and PCI
enumerating. More stuff to look over at this point as the Config.lb
isn't entirely filled with PCI bus data.)

Wed May 9 22:39:30 PDT 2007