[PATCH 7/9] ARM: move exception vectors away from start of binary

[Jean-Christophe PLAGNIOL-VILLARD]

On 15:13 Mon 02 Jan     , Sascha Hauer wrote:
> On Sun, Jan 01, 2012 at 05:37:17AM +0100, Jean-Christophe PLAGNIOL-VILLARD wrote:
> > On 15:52 Sat 17 Dec     , Sascha Hauer wrote:
> > > Traditionally U-Boot and barebox have the exception vectors at
> > > the start of the binary. There is no real reason in doing so,
> > > because in the majority of cases this data will not be at 0x0
> > > where it could be used as vectors directly anyway.
> > > This patch puts the vectors into a separate linker section and
> > > defines an head function which is placed at the start of the
> > > image instead. Putting this in a separate function also has
> > > the advantage that it can be placed at the start of images
> > > which require an additional header like several Freescale i.MX
> > > images. As the head function contains the barebox arm magic
> > > those images can now also be detected aas barebox images.
> > > 
> > > Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
> > > ---
> > I've to make it optionnal as on AT91 for boot we must have it at the bigeniing
> > of the binary
> 
> Instead of this:
> 
> 		"b reset\n"
> 		".rept 7\n"
> 		".word 0x0\n"
> 		".endr\n"
> 
> we could do this:
> 
> 		"b reset\n"
> 		".rept 7\n"
> 		"1: b 1b\n"
> 		".endr\n"
> 
> This looks like a exception vector table for the at91 bootloader. BTW
> I just looked at a at91 datasheet and at least on the at91sam9260 the
> sixth vector should contain the image size to copy. So maybe this does
> not work on at91 anyway?
I'm working on it so please hold on this

Best Regards,
J.