[U-Boot-Users] RFC: Booting the Linux/ppc64 kernel without Open Firmware HOWTO (#2)

Pantelis Antoniou panto at intracom.gr
Thu May 19 23:16:32 EST 2005

Wolfgang Denk wrote:
> Dear Ben,
> in message <1116478614.918.75.camel at gaston> you wrote:
>>And here is a second draft with more infos.
>>           Booting the Linux/ppc64 kernel without Open Firmware
> Thanks a lot for taking the initiative to come to an agreement  about
> the kernel boot interface.
> I have some concerns about the memory foot print and  increased  boot
> time  that  will  result  from  the proposed solution. There are many
> embedded systems where resources are tight and requirements are  aven
> tighter.  It  would  be probably a good idea to also ask for feedback
> from these folks - for example by posting your RFC on the celinux-dev
> mailing list.
> But my biggest concern is that we  should  try  to  come  up  with  a
> solution  that  has  a  wider  acceptance. Especially from the U-Boot
> point of view it is not exactly nice that each of  PowerPC,  ARM  and
> MIPS  use  their very own, completely incompatible way of passing in-
> formation from the boot loader to the kernel.
> As is, your proposal will add just another incompatible way of  doing
> the  same  thing  (of course we will have to stay backward compatible
> with U-Boot to allow booting older kernels, too).
> Why don't we try to come up with a solution that is acceptable to the
> other architectures as well? 
> Maybe you want  to  post  the  RFC  to  lkml,  or  at  least  to  the
> linux-arm-kernel and linux-mips mailing lists?

I'm really interested in having this discussion.

I'm forced to maintain my own u-boot based solution for doing this and
I'd be very interested in whatever gets chosen.

IMHO the current mess is considerable, and at this point I wouldn't
really care if the resulting solution is less than optimal, as long
as there is one.

> Best regards,
> Wolfgang Denk



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