PATA/legacy IDE subsystem on PowerMac

PATA/legacy IDE subsystem on PowerMac

[JJDaNiMoTh]

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Hello,

I hope I've posted to the right list.
I'm the maintainer of the linux kernel in ArchlinuxPPC [1].

We actually set statically the support for the PowerMac on-board IDE support 
(under ATA/ATAPI/MFM/RLL support (DEPRECATED) ), and the disk is recognized 
correctly (hda*).
If we try to remove this legacy support, enabling Serial ATA and Parallel ATA 
drivers --> Apple PowerMac/PowerBook internal 'MacIO' IDE (NEW) statically, 
the kernel doesn't recognize the partition on the HD. We tried different 
powerbook, and the result is the same.

Because we haven't log, I take two photos [2] [3].

With legacy stuff, I used hda6 as root device: with PATA, neither hda{5,6,7} or 
sda{5,6,7} work.
As you can see from the photos, seems that the hd isn't attached to any device 
under /dev.
With request I could upload somewhere the configs (working and not working) 
used, but they differ only for the things above.

Please let me in the right direction.
Many thanks to all.


[1] http://www.archlinuxppc.org
[2] http://img268.imageshack.us/img268/5787/dsc04701x.jpg
[3] http://img204.imageshack.us/img204/6476/dsc04701v.jpg

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Re: PATA/legacy IDE subsystem on PowerMac

[Benjamin Herrenschmidt]

On Tue, 2010-05-18 at 21:16 +0200, JJDaNiMoTh wrote:
> Hello,
> 
> I hope I've posted to the right list.
> I'm the maintainer of the linux kernel in ArchlinuxPPC [1].
> 
> We actually set statically the support for the PowerMac on-board IDE support 
> (under ATA/ATAPI/MFM/RLL support (DEPRECATED) ), and the disk is recognized 
> correctly (hda*).
> If we try to remove this legacy support, enabling Serial ATA and Parallel ATA 
> drivers --> Apple PowerMac/PowerBook internal 'MacIO' IDE (NEW) statically, 
> the kernel doesn't recognize the partition on the HD. We tried different 
> powerbook, and the result is the same.
> 
> Because we haven't log, I take two photos [2] [3].
> 
> With legacy stuff, I used hda6 as root device: with PATA, neither hda{5,6,7} or 
> sda{5,6,7} work.
> As you can see from the photos, seems that the hd isn't attached to any device 
> under /dev.
> With request I could upload somewhere the configs (working and not working) 
> used, but they differ only for the things above.

Nothing obvious... the disk seem to be detected properly. Do you have
the support for mac partitions and the SCSI disk driver (BLK_DEV_SD)
enabled ?

Cheers,
Ben.

> Please let me in the right direction.
> Many thanks to all.
> 
> 
> [1] http://www.archlinuxppc.org
> [2] http://img268.imageshack.us/img268/5787/dsc04701x.jpg
> [3] http://img204.imageshack.us/img204/6476/dsc04701v.jpg
> _______________________________________________
> Linuxppc-dev mailing list
> Linuxppc-dev@lists.ozlabs.org
> https://lists.ozlabs.org/listinfo/linuxppc-dev

Re: PATA/legacy IDE subsystem on PowerMac

[jjDaNiMoTh]

2010/5/18 Benjamin Herrenschmidt <benh@kernel.crashing.org>:
[cut]
> Nothing obvious... the disk seem to be detected properly. Do you have
> the support for mac partitions and the SCSI disk driver (BLK_DEV_SD)
> enabled ?

The PATA modules was built statically, and BLK_DEV_SD as a module (and
not included in the ramfs).
Now it boot correctly, many thanks.

Have a nice day