From: arnd@arndb•de (Arnd Bergmann)
To: linux-arm-kernel@lists•infradead.org
Subject: [GIT PULL] Renesas ARM-based SoC defconfig for v3.8
Date: Mon, 22 Oct 2012 14:12:19 +0000 [thread overview]
Message-ID: <201210221412.19486.arnd@arndb.de> (raw)
In-Reply-To: <20121022015126.GA10587@verge.net.au>
(adding Nico, who did a lot of the work to get rid of PLAT_PHYS_OFFSET)
On Monday 22 October 2012, Simon Horman wrote:
> On Mon, Oct 22, 2012 at 09:33:51AM +0900, Simon Horman wrote:
> > On Fri, Oct 19, 2012 at 08:18:50AM +0000, Arnd Bergmann wrote:
> > > On Friday 19 October 2012, Simon Horman wrote:
> > > > * A more significant problem seems to be the use of CONFIG_MEMORY_START
> > > > to define PLAT_PHYS_OFFSET in arch/arm/mach-shmobile/include/mach/memory.h
> > > >
> > > > I'm not sure that I see an easy way to get around this one.
> > >
> > > ARM_PATCH_PHYS_VIRT should take care of this, have you tried it?
>
> I believe that this leaves mach-shmobile with three areas
> where CONFIG_MEMORY_START/PLAT_PHYS_OFFSET is used.
Hmm, I just noticed that in fact shmobile is the only remaining
platform that uses CONFIG_MEMORY_START with a per-board or per-soc
setting.
> * arch/arm/mach-shmobile/headsmp.S
>
> This uses PLAT_PHYS_OFFSET.
>
> I believe this can be replaced with a run-time calculation. Though I
> haven't thought about the details yet.
>
> * arch/arm/boot/compressed/head-shmobile.S
>
> This makes use of CONFIG_MEMORY_START.
>
> This is only used if CONFIG_ZBOOT_ROM is set.
>
> I'm unsure if this can be replaced with a run-time calculation or not.
> But regardless it is only used if CONFIG_ZBOOT_ROM is set, which is not
> the default at this time.
Right, you can probably make CONFIG_ZBOOT_ROM_MMCIF and
CONFIG_ZBOOT_ROM_SH_MOBILE_SDHI depend on !ARM_PATCH_PHYS_VIRT
> * arch/arm/mach-shmobile/Makefile.boot
>
> This makes use of CONFIG_MEMORY_START to set zreladdr.
>
> I believe that the solution to this is to make use of CONFIG_AUTO_ZRELADDR.
> However, it is not yet clear to me how that can be used in conjunction
> with a uImage. As I understand it the boot loader on many of our boards,
> including the Marzen board which is my first target for this work, boot
> uImage imagess.
If this doesn't work, we probably also need to find a solution to
build multiple uImage files from the same vmlinux when building a
multiplatform kernel.
Arnd
next prev parent reply other threads:[~2012-10-22 14:12 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-17 4:38 [GIT PULL] Renesas ARM-based SoC defconfig for v3.8 Simon Horman
2012-10-17 4:38 ` [PATCH 1/2] ARM: shmobile: mackerel: defconfig update Simon Horman
2012-10-17 4:38 ` [PATCH 2/2] ARM: shmobile: armadillo800eva: enable L2X0 cache on defconfig Simon Horman
2012-10-17 13:42 ` [GIT PULL] Renesas ARM-based SoC defconfig for v3.8 Arnd Bergmann
2012-10-18 0:58 ` Simon Horman
2012-10-18 7:29 ` Arnd Bergmann
2012-10-18 8:13 ` Simon Horman
2012-10-19 3:09 ` Simon Horman
2012-10-19 8:18 ` Arnd Bergmann
2012-10-22 0:33 ` Simon Horman
2012-10-22 1:51 ` Simon Horman
2012-10-22 14:12 ` Arnd Bergmann [this message]
2012-10-22 18:20 ` Nicolas Pitre
2012-10-30 7:45 ` Simon Horman
2012-10-30 21:41 ` Arnd Bergmann
2012-11-01 0:46 ` Simon Horman
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=201210221412.19486.arnd@arndb.de \
--to=arnd@arndb$(echo .)de \
--cc=linux-arm-kernel@lists$(echo .)infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox