OFWBUS: How does autoconfiguration work?

[Niteesh]

I couldn't find anything useful for me, I need information about how the
hardware autoconfiguration works, not autoconf.

On Sun, Feb 2, 2020 at 12:24 AM Clay Daniels <clay.daniels.jr at gmail.com>
wrote:

> Take a look at the Porter's Handbook:
>
>
> https://docs.freebsd.org/doc/7.4-RELEASE/usr/share/doc/en/books/porters-handbook/using-autotools.html
>
> On Sat, Feb 1, 2020 at 8:56 AM Niteesh <gsnb.gn at gmail.com> wrote:
>
>> I am interested in adding autoconfiguration to one of my projects.
>> The current drivers use lazy initialization, for example, the UART
>> drivers initialize the hardware only during their first invocation.
>>
>> I would like to add a subsystem, that will read the DTB and call
>> the appropriate drivers.
>>
>> I want to know how it is implemented in FreeBSD, I took a look at the
>> code, but I am still couldn't figure out, when does FreeBSD start to
>> parse the DTB, how does it fill up the device struct and few more.
>>
>> Can someone please explain how all this works with reference to code
>> or point me to some documentation?
>>
>> Thanks,
>> Niteesh
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>