Re: [PATCH 1/2] OLPC: Add support for calling into Open Firmware

From: H. Peter Anvin
Date: Mon Apr 21 2008 - 13:05:20 EST


David Woodhouse wrote:

However, until we clean up the promfs stuff, there's no chance of getting
an OFW device tree upstream.

I see no reason why we shouldn't be able to create a 'flattened'
device-tree during early boot, like the PowerPC kernel does. And use it
thereafter, having quiesced OpenFirmware. Haven't we already been
working on unifying this between SPARC and PowerPC kernels?

I definitely don't think we need to play these tricks to keep
OpenFirmware resident while the kernel is running. Take a look at your
second patch -- it's _all_ just lookups in the device-tree, and you're
inventing a new way to do it instead of using the existing one.


If so, would this apply to OLPC as well?

-hpa
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