[LinuxBIOS] 440bx folks: looking for spd data
Corey Osgood
corey_osgood at verizon.net
Mon May 14 23:29:11 CEST 2007
roger wrote:
> On Mon, 2007-05-14 at 05:16 -0400, Corey Osgood wrote:
>
>> If anyone working on the 440 has time, can you check the output of your
>> spd data and see if there's any non-00 or 0xff data in 0x7e and 0x7f
>> (aka 126/127)? This is part of the Intel SDRAM SPD standard, but not
>> officially part of JEDECs. The 3 dimms I've checked all support it,
>> along with one Uwe used (from a minicom.cap sent to the list), but I'm
>> curious how many don't, and if they don't what values they return. This
>> is by far the easiest way to set up a lot of the northbridge stuff by
>> spd, but if there are lots of dimms out there NOT supporting it, I'll
>> see if there's another way.
>
> dimm: 00.0: 50
> 00: 80 08 04 0c 0a 01 40 00 01 a0 60 00 80 08 00 01
> 10: 8f 04 04 01 01 00 0e 00 00 00 00 14 14 14 32 20
> 20: 20 10 20 10 00 00 00 00 00 00 00 00 00 00 00 00
> 30: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 12 14
> 40: 7f 7f 98 ff ff ff ff ff 49 33 30 30 30 30 39 32
> 50: 36 2d 30 30 20 20 20 20 20 20 20 41 20 30 36 32
> 60: 31 30 30 20 53 4f 55 54 48 4c 41 4e 44 20 4d 49
> 70: 43 52 4f 20 53 59 53 54 45 4d 53 20 30 32 *64 *a4
> 80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> 90: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> a0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> b0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> c0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> d0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> e0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
> f0: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>
> am i looking at this right?
>
> Row 0x70, and count in hex.
>
> The values at 0x7e & 0x7f respectively are; 0x64 & 0xa4?
>
>
> Looking at the other 2 sticks of sdram I have:
>
> 0x64, 0xf6
> 0x64, 0xf7
>
>
> (0x64, 0xff are all on my Mushkin in my S1832DL)
Yep, exactly right, thanks! I think I'll work using these bits for now,
and if it turns out they don't work I'll switch to some other method.
-Corey
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