SOLVED: Turnning On DOC Millennium ECC Logic

SOLVED: Turnning On DOC Millennium ECC Logic

[Ollie Lho]

David,
	I have successfully turned on the ECC logic of DoC Millennium. The
ECC logic correctly caculate the ECC on both read and write cases. Now the Millennium driver is as complete as DoC 2000
driver. I will send you a patch
next Monday after I did some test (should I CC to Linus also ??).

Ronald,
	I can now program the IPL area correctly, the IPL area can be download
by the internal logic of the Millennium such that the disk on chip acts as a
512 bytes ROM when power-up. We can proceed to work on how to shrink the DRAM
sizing/timing code into 512 byte. After that we will have a complete Diskless,
BIOSless, maintance free enviroment which should be very useful for you cluster
nodes. BTW, did you read the SPD DRAM sizing/timing code I sent to you ?? And
did you reproduce the SiS FB (no VGA BIOS) stuff on your side ??

Ollie


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Re: SOLVED: Turnning On DOC Millennium ECC Logic

[Ollie Lho]

"Rogelio M. Serrano Jr." wrote:
> 
> Ollie Lho wrote:
> 
> > Ronald,
> >         I can now program the IPL area correctly, the IPL area can be download
> 
> Cool! Can this be done on the DOC2000 too?
> 

Nop, only DOC Millennium has the 512 byte SRAM area for the IPL. On power-up
the internal download logic automatically download the first page the of NAND
flash to these SRAM. The logic also check the ECC along with the download
process so this is why I am working so hard to turn the ECC logic On. 

> >
> > by the internal logic of the Millennium such that the disk on chip acts as a
> > 512 bytes ROM when power-up. We can proceed to work on how to shrink the DRAM
> > sizing/timing code into 512 byte. After that we will have a complete Diskless,
> > BIOSless, maintance free enviroment which should be very useful for you cluster
> 
> Is that also usefull on ordinary PC?  Super cool!
> 

Possible. With the proper LinuxBIOS support for your M/B chipset, you can
totally replace your traditional BIOS + NOR flash with LinuxBIOS + Linux +
DOC Millennium combination.

Ollie


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Re: SOLVED: Turnning On DOC Millennium ECC Logic

[Rogelio M. Serrano Jr.]

Hec, this got me very excited:

Ollie Lho wrote:

> David,
>         I have successfully turned on the ECC logic of DoC Millennium. The
> ECC logic correctly caculate the ECC on both read and write cases. Now the Millennium driver is as complete as DoC 2000
> driver. I will send you a patch
> next Monday after I did some test (should I CC to Linus also ??).
>
> Ronald,
>         I can now program the IPL area correctly, the IPL area can be download

Cool! Can this be done on the DOC2000 too?

>
> by the internal logic of the Millennium such that the disk on chip acts as a
> 512 bytes ROM when power-up. We can proceed to work on how to shrink the DRAM
> sizing/timing code into 512 byte. After that we will have a complete Diskless,
> BIOSless, maintance free enviroment which should be very useful for you cluster

Is that also usefull on ordinary PC?  Super cool!

>
> nodes. BTW, did you read the SPD DRAM sizing/timing code I sent to you ?? And
> did you reproduce the SiS FB (no VGA BIOS) stuff on your side ??
>
> Ollie
>
> To unsubscribe, send "unsubscribe mtd" to majordomo@infradead.org



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Re: SOLVED: Turnning On DOC Millennium ECC Logic

[Ronald G Minnich]

This is going to sound ridiculous, but I am currently stuck as we can't
find a place to get SDRAM and PIII chips. The last two places took money
but sent no hardware, or sent wrong hardware. I'm stuck on all this until
next week. 

I'll let you know :-(

ron



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Re: SOLVED: Turnning On DOC Millennium ECC Logic

[David Woodhouse]

On Fri, 21 Jul 2000, Ollie Lho wrote:

> David,
> 	I have successfully turned on the ECC logic of DoC Millennium. The
> ECC logic correctly caculate the ECC on both read and write cases. Now the Millennium driver is as complete as DoC 2000
> driver. I will send you a patch
> next Monday after I did some test (should I CC to Linus also ??).

Excellent - thanks. Send it to me, I'll flush some stuff to Linus in a
week or so. I'd like to make some time to put in the same kind of
threading support that I've put into the CFI commandset code.


--
dwmw2



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