Mitch Bradley wrote:
[Changing name of thread...]
a) I think we need our own sub-architecture, sooner rather than later.
I could give a bunch of reasons, but I suspect that they are obvious to
everyone here, considering how little our hardware resembles a legacy PC.
b) Do we really need PCI autoconfiguration at this point? The wiki
hardware spec doesn't mention the mini-PCI connector. Can we just
pretend that it doesn't exist? That would remove a lot of variables
from the startup and suspend/resume sequence. Removing unnecessary
variables is a Very Good Thing.
I'd say leave it in, as we do wish to let people have at the mini pci
connector, it is not that expensive to enumerate the PCI (it's a tiny
tree!), I think the kernel can easily reload all the config info (the
infrastructure is there and works), and we don't want simple stuff like
lspci -H1 or -H2 to fail.
I don't think it's really going to kill us.
Also, in an earlier note I outlined an easy way to do the S3 resume from
the linuxbios side, and one of the smart kernel guys pointed out how
easy it is to pick that up from the kernel and resume PCI config space.
I think we're ok.
c) I will go out on a limb and say that I could add rudimentary OF
device tree support to either or both of LinuxBIOS and a custom kernel
in a very short time. Especially if the actual configuration is mostly
known. No methods, just properties. You may well ask: Why bother with
a device tree if the configuration is known? The answer: Because when
we do the 2nd generation hardware and kernel, we will wish that we had.
I could not agree more. I would like to work with you on the linuxbios
side, so we can add it in as a linuxbios device, and make sure it gets
done in conformance with how linuxbios works -- stefan and richard are
also able to help here.
And, if this could grow to real OF properties support in linux for the
long term, it's a good thing. The alternatives (ACPI and EFI) are just
disgusting.
thanks
ron
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