[PATCH 1/2] qemu platform, v2
segher at kernel.crashing.org
Sat Sep 29 02:53:28 EST 2007
>> I'd be following this more closely if compiling a device tree didn't
>> require an external utility (dtc or some such) that doesn't come with
>> Linux kernel. No other target platform I've built kernels for
>> requires such
>> an environmental dependency.
> No? You haven't built kernels for other platforms that have external
> dependencies such as perl, gcc, make, binutils, etc.? :)
Two of the supported Linux archs cannot be built with a mainline
And I have to install GNU sed/awk to get builds to work, too.
OTOH, it would be nice if we didn't need DTC -- it itself doesn't
build out-of-the-box on all systems, either ;-)
>> (This is a problem both for hardwiring the
>> device tree into the kernel and for building a new boot rom from the
>> kernel's ppc boot wrapper that would contain such a device tree to
>> feed to
>> the kernel.)
> It's only really been a problem for ps3 so far, since the embedded
> guys don't seem to have any difficulty with installing dtc. We are
> looking at what to do for ps3 and prep, and the answer may well
> involve bundling dtc in the kernel source (it's not too big, around
> 3400 lines).
If only a few platforms have this problem, we could instead include
their .dtb files in the kernel source tree.
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