Thread (19 messages) 19 messages, 6 authors, 2007-02-23

Re: [RFC 3/3] zImage: Exception vector support

From: Geoff Levand <hidden>
Date: 2007-02-20 14:23:13

David Gibson wrote:
On Sat, Feb 17, 2007 at 05:17:08PM -0800, Geoff Levand wrote:
quoted
Add SMP exception vector support to the powerpc zImage bootwrapper.  For
platforms which have entry points in the vector table.  This implements
SMP entry via the system reset vector.
I really don't like having always-included code take over the absolute
start of the zImage's address space.  The whole idea in my entry
cleanup patch is that the platform code gets control of the "head.S"
area, so we can potentially support platforms with conflicting
hard-wired requirements for things at specific offsets.

I think this belongs in a ps3.o, which will define _zimage_start to be
identical to the reset vector.
I need two entry points, one for the first stage loader (0x100), and one
for a second stage kexec loader (_zimage_start).

-Geoff
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