Detecting the Disk-On-Chip 2800

[Adam Agnew]

Awesome, thank you. Sorry, I haven't figured out yet who has done what,
but I really appreciate that contribution :)

On Mon, 13 Nov 2000, Ollie Lho wrote:

> Adam Agnew wrote:
> > 
> > Is it common to be unable to detect the DOC after you've flashed a bios to
> > it? Can you get around that by explicitly stating the the memory address
> > and length for it?
> > - Adam Agnew
> > 
> 
> Adam,
> 	You should ask me directly, that is what I did to the driver ;-). The
> original firmware (IPL) in the DoC has 0x55AA signature in it. So the driver
> probe for it to determine if there is a DoC on the bus. After we reprogramming
> the IPL area, the signature is gone. You should CVS update your MTD source
> tree and reconfigure the kernel. There are two options, one is PROBE_HIGH,
> which will probe high address (near 4GB) rather than log address (under 1MB)
> for DoC. The other is PROBE_55AA, which probe the signature. If you are playing
> LinuxBIOS with SiS 630, please choose PROBE_HIGH == y, PROBE_55AA = n.
> 
> Ollie
> 



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