Re: [microblaze-uclinux] IDE ATA-4, ATA-5 interface for microblaze?

[Greg Ungerer <gerg@xxxxxxxxxxxx>]

Hi Roman, John,

John Williams wrote:
> Roman Wojnar wrote:
>> I have intention to port IDE ATA-4 or ATA-5 interface to microblaze.
>> Have anybody any experience with IDE drivers for uClinux?
>> Are there any differences against Linux driver?
> 
> 
> I haven't done it, but I think some of SnapGear's m68knommu/Coldfire 
> uClinux targets have IDE support in them.  I don't think there's any 
> rocket science, you'll just need to tweak the lowest driver level to 
> talk to your interface core.

Yeah, I have done it on ColdFire based harwdare. There is no difference
with standard IDE drivers for Linux. Ofcourse you generally need a
bottom end driver stub to cater for the exact interface to you
specific hardware.


>> I have checked settings in "menuconfig" and there are missing support for
>> IDE-ATA interface. Why?
> 
> 
> menuconfig -> kernel config -> general setup -> [X] disk hardware support
> 
> then back out to the main kernel menu, scroll down to ATA/IDE/MFM/RLL 
> support - more options than you could ever hope for! :)

You will need a low level driver stub, and you will have to code that.
Look at examples from the m68knommu arch, code in:

   linux-2.4.x/drivers/ide/legacy/uclinux.c

Regards
Greg



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