Hello, I recently migrated an AMCC PPC405EP system from arch/ppc to arch/powerpc and found that in kernel 2.6.25, my board support patches have reduced to just the board support patches - approx 20k bytes in size (and one small one-line fix needed when using RT Preemption kernel). Compare this with 2.6.24 and earlier where I had to apply patches to complete the PPC405EP and/or arch/powerpc support. Prior to 2.6.23 had to use non kernel.org kernel sources and arch/ppc. 2.6.23 --> patch file size 400k+ 2.6.24 --> patch file size ~80k 2.6.25 --> patch file size ~20k 2.6.26 --> patch file size ~20k
I think that with 2.6.25 (and upcoming 2.6.26) this means that 4xx is ready for prime time in arch/powerpc. One other note though, for IBM I2C Driver 2.2 you need to use 2.6.26 release candidates (or apply a patch to back port it). The 2.1 driver appears to be arch/ppc (IBM_OCP based) only. The only real downer is that the native posix thread library (NPTL) being added to the upcoming uclibc won't support PowerPC (at least not yet). Getting more to the topic, when you get into preparing this document, keep me in the loop too please. I may be able to contribute something to it as well. Thanks in advance. Regards, Darcy -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of vb Sent: Wednesday, June 11, 2008 6:56 AM To: Mike Timmons Cc: Andy Schmidt; [email protected] Subject: Re: PPC to PowerPC Migration I recently ported two platforms (8245 and 8541) from ppc tree in earlier 2.6 versions into powerpc tree in 2.6.25. It is amazing how little the device tree contents are described, a lot of things required reverse engineering of the kernel code to understand the meaning of some numbers in the tree. I am also willing to contribute into a document describing this transition, please keep me in the loop, regards, Vadim On Tue, Jun 10, 2008 at 6:19 PM, Mike Timmons <[EMAIL PROTECTED]> wrote: > Great Idea Andrew. I am no long-serving expert, but over the past few > years I've had some ARM-linux and more recently mpc5200 Linux exposure. > For the mpc5200 we started as ppc under 2.6.16 a few months ago. I > recently migrated to 2.6.24 with ARCH=powerpc. --snip!-- _______________________________________________ Linuxppc-embedded mailing list [email protected] https://ozlabs.org/mailman/listinfo/linuxppc-embedded
