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From: Sascha Hauer <s.hauer@pengutronix.de>
To: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: barebox@lists.infradead.org
Subject: Re: [PATCH 7/9] ARM: move exception vectors away from start of binary
Date: Wed, 21 Dec 2011 11:09:15 +0100	[thread overview]
Message-ID: <20111221100915.GQ27267@pengutronix.de> (raw)
In-Reply-To: <20111220140745.GG7899@game.jcrosoft.org>

On Tue, Dec 20, 2011 at 03:07:45PM +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@pengutronix.de>
> > ---
> >  arch/arm/boards/eukrea_cpuimx25/eukrea_cpuimx25.c  |    3 ++-
> >  arch/arm/boards/eukrea_cpuimx35/flash_header.c     |    3 ++-
> >  arch/arm/boards/eukrea_cpuimx51/flash_header.c     |    3 ++-
> >  arch/arm/boards/freescale-mx25-3-stack/3stack.c    |    3 ++-
> >  .../boards/freescale-mx35-3-stack/flash_header.c   |    3 ++-
> >  arch/arm/boards/freescale-mx51-pdk/flash_header.c  |    3 ++-
> >  arch/arm/boards/freescale-mx53-loco/flash_header.c |    3 ++-
> >  arch/arm/boards/freescale-mx53-smd/flash_header.c  |    3 ++-
> >  arch/arm/cpu/mmu.c                                 |    4 ++--
> >  arch/arm/cpu/start.c                               |   14 +++++++-------
> >  arch/arm/include/asm/barebox-arm-head.h            |   17 +++++++++++++++++
> >  arch/arm/include/asm/barebox-arm.h                 |    2 ++
> >  arch/arm/lib/barebox.lds.S                         |    5 ++++-
> >  13 files changed, 48 insertions(+), 18 deletions(-)
> >  create mode 100644 arch/arm/include/asm/barebox-arm-head.h
> you need to update the rm9200 too

Only the boards which define some non standard entry header need an
update. The rm9200 does not seem to be one of these boards, or am
I missing something?

Sascha


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  reply	other threads:[~2011-12-21 10:09 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-12-17 14:52 Thumb-2 support Sascha Hauer
2011-12-17 14:52 ` [PATCH 1/9] ARM i.MX5: prepare to add a imx51_lowlevel_init Sascha Hauer
2011-12-18 14:03   ` Eric Bénard
2011-12-19 10:18   ` Sascha Hauer
2011-12-17 14:52 ` [PATCH 2/9] ARM i.MX51: implement " Sascha Hauer
2011-12-17 14:52 ` [PATCH 3/9] ARM i.MX51 babbage: use generic lowlevel init function Sascha Hauer
2011-12-17 14:52 ` [PATCH 4/9] ARM eukrea i.MX51: use generic lowlevel init Sascha Hauer
2011-12-17 14:52 ` [PATCH 5/9] ARM: update string functions from Linux Kernel Sascha Hauer
2011-12-17 14:52 ` [PATCH 6/9] ARM cache-armv7: use thumb-2 instructions where necessary Sascha Hauer
2011-12-17 14:52 ` [PATCH 7/9] ARM: move exception vectors away from start of binary Sascha Hauer
2011-12-18 23:43   ` Peter Korsgaard
2011-12-20 14:07   ` Jean-Christophe PLAGNIOL-VILLARD
2011-12-21 10:09     ` Sascha Hauer [this message]
2012-01-01  4:37   ` Jean-Christophe PLAGNIOL-VILLARD
2012-01-02 14:13     ` Sascha Hauer
2012-01-02 15:09       ` Jean-Christophe PLAGNIOL-VILLARD
2012-01-23 12:07         ` Sascha Hauer
2012-01-24  4:39           ` Jean-Christophe PLAGNIOL-VILLARD
2011-12-17 14:52 ` [PATCH 8/9] ARM: get runtime offset of board_init_lowlevel_return by using separate section Sascha Hauer
2011-12-17 14:52 ` [PATCH 9/9] ARM: Allow to compile in thumb-2 mode Sascha Hauer

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