[OpenBIOS] [PATCH 0/5] macio: switch over to use 2 ata-3 controllers

[Alexander Graf]

On 24.12.15 20:53, Mark Cave-Ayland wrote:
> Further work on Darwin/OS X shows that IOKit expects both the hard disk and 
> cdrom to be attached to the ata-3 controller for QEMU's mac99 machine.
> 
> Currently OpenBIOS generates an ata-3 and an ata-4 controller (and by default 
> attaches the cdrom to the ata-4 controller) meaning that IOKit would fail to
> locate and mount the cdrom on boot. Resolve this by instantiating 2 ata-3
> controller nodes instead which also is a better match for a real device tree.
> 
> The relevant changes to the device tree are shown below:
> 
> Before:
> 
> fff542a8 /pci at 80000000/mac-io at 3/ata-3 at 20000 (ata)
> fff54540 /pci at 80000000/mac-io at 3/ata-4 at 21000 (ata)
> fff547d8 /pci at 80000000/mac-io at 3/ata-4 at 21000/cdrom at 0 (block)
> 
> After:
> 
> fff542a8 /pci at 80000000/mac-io at 3/ata-3 at 20000 (ata)
> fff54540 /pci at 80000000/mac-io at 3/ata-3 at 21000 (ata)
> fff547d8 /pci at 80000000/mac-io at 3/ata-3 at 21000/cdrom at 0 (block)
> 
> The OpenBIOS IDE code currently works by using the device name internally to
> reference the controller node, which of course breaks when 2 nodes are given
> the same name property. Patches 1-4 switch the OpenBIOS IDE code over to
> reference controller nodes by phandle rather than name, while patch 5 does
> the actual switch from 1 ata-3 and 1 ata-4 controller to 2 ata-3 controllers.
> 
> Signed-off-by: Mark Cave-Ayland <mark.cave-ayland at ilande.co.uk>

Reviewed-by: Alexander Graf <agraf at suse.de>


Alex