[coreboot] ram init help on the i82830

[Joseph Smith]

On Fri, 30 May 2008 00:54:01 -0400, "Corey Osgood" <corey.osgood at gmail.com>
wrote:
> It's double sided?
Yes, remember the slot is DIMMO and the single-sided onboard is DIMM1

512MB PC133 so-dimm
DRB 0x60 = 0x08 x 32 = 256MB
DRB 0x61 = 0x10 x 32 = 512MB

64MB PC133 single-sided onboard memory
DRB 0x62 = 0x12 x 32 = 576MB
DRB 0x63 = 0x12 x 32 = 576MB

60: 08 10 12 12 12 12 00 00 00 00 00 00 00 00 00 00

So, I have a few questions abot the read32().
Is this supposed to just read32() the begining (+ addr_offset) of each
dimm???

Or, is it to do a read32() at the begining and then another read32() at the
end???

Or, is it just supposed to do a read32() the begining (+ addr_offset) of
each side of each dimm???

I'm really confused about this part, is there any jedec docs I can read on
how this is supposed to work???

-- 
Thanks,
Joseph Smith
Set-Top-Linux
www.settoplinux.org