On Tue, 2013-08-13 at 08:57 +1100, Stephen N Chivers wrote: > Scott Wood <scottw...@freescale.com> wrote on 08/09/2013 04:07:24 AM: > > > From: Scott Wood <scottw...@freescale.com> > > To: Kumar Gala <ga...@kernel.crashing.org> > > Cc: Stephen N Chivers <schiv...@csc.com.au>, <pau...@samba.org>, > > <linuxppc-dev@lists.ozlabs.org>, Chris Proctor <cproc...@csc.com.au> > > Date: 08/09/2013 04:08 AM > > Subject: Re: [RFC PATCH 1/1] powerpc/embedded6xx: Add support for > > Motorola/Emerson MVME5100. > > > > On Thu, 2013-08-08 at 10:30 -0500, Kumar Gala wrote: > > > Also, we don't take full defconfigs in the tree, look at 'make > > savedefconfig' > > > > Why does this board need its own defconfig at all? Just add it to > > ppc6xx_defconfig. > > The boards firmware as stated above is PPCBug. PPCBug is not Open Firmware > compatible. > > There is no U-Boot support for the board.
I'm not sure why that precludes the use of ppc6xx_defconfig... > In ppc6xx_defconfig the e100 network device and NFS support is modular and > that forces the use of an initrd. OK, then let's enable those in ppc6xx_defconfig. We do in a lot of the other defconfigs (such as 85xx and derivatives). > PPCBugs network boot command takes only one file argument and so makes > it difficult to use an initrd. > > So the choices are: > - Providing a defconfig for the board, > - Building the kernel with the initrd embedded in it, > - Finding an alternative boot loader, > - Doing the board support for U-Boot. > The first choice is simple and documents the configuration of the > board without mixing it into ppc6xx_defconfig. The first choice means your board would get much less build-testing, and would increase maintenance costs of defconfig changes (and/or lead to divergence from other defconfigs that doesn't actually have anything to do with this board or its use cases). The fifth choice is "add what you need to ppc6xx_defconfig". Within reason of course, but I think a common PCI network device and NFS root support is reasonable. -Scott _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
