[TUHS] the device tree, hardware, and kernels.

Al Kossow via TUHS tuhs at tuhs.org
Tue Apr 7 07:14:09 AEST 2026


On 4/6/26 2:11 PM, Al Kossow wrote:
> On 4/6/26 2:09 PM, Al Kossow via TUHS wrote:
>> On 4/6/26 2:02 PM, ron minnich via TUHS wrote:
>>
>>> Was the device tree a Mitch Bradley thing?
>>>
>>
>> yes. Sun's Open Firmware was first
> 
> Apple adopted PCI assuming that card vendors would include OF along
> with PC BIOS. Unfortunately that rarely happened. It ended up that
> only cards required during boot ended up with OF in rom.
> 

The other difference was OF hung around on Suns after the OS booted.
On the Mac, it was discarded after the first stage bootstrap.



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