From: u.kleine-koenig@pengutronix.de (Uwe Kleine-König)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2] ARM: new platform for Energy Micro's EFM32 Cortex-M3 SoCs
Date: Thu, 26 Sep 2013 11:42:51 +0200 [thread overview]
Message-ID: <20130926094251.GK16106@pengutronix.de> (raw)
In-Reply-To: <201309172245.25367.arnd@arndb.de>
On Tue, Sep 17, 2013 at 10:45:25PM +0200, Arnd Bergmann wrote:
> On Tuesday 17 September 2013, Uwe Kleine-K?nig wrote:
> > arch/arm/Kconfig | 16 +++-
> > arch/arm/Kconfig.debug | 16 ++++
> > arch/arm/Makefile | 1 +
> > arch/arm/configs/efm32_defconfig | 104 +++++++++++++++++++++++++
> > arch/arm/mach-efm32/Makefile | 1 +
> > arch/arm/mach-efm32/Makefile.boot | 2 +
> > arch/arm/mach-efm32/cmu.h | 15 ++++
> > arch/arm/mach-efm32/common.c | 19 +++++
> > arch/arm/mach-efm32/common.h | 1 +
> > arch/arm/mach-efm32/dtmachine.c | 31 ++++++++
> > arch/arm/mach-efm32/include/mach/debug-macro.S | 48 ++++++++++++
> > arch/arm/mach-efm32/include/mach/entry-macro.S | 5 ++
> > arch/arm/mach-efm32/include/mach/io.h | 6 ++
> > arch/arm/mach-efm32/include/mach/irqs.h | 6 ++
> > arch/arm/mach-efm32/include/mach/timex.h | 7 ++
>
> You should be able to add NOMMU platforms in combination with CONFIG_MULTIPLATFORM
> now, which gets rid of most of these files.
I made that work now and can prepare a patch. I had to drop "depends on
!ARCH_MULTIPLATFORM" from XIP_KERNEL. That's because my machine only
works with XIP_KERNEL as it only has 4 MiB of RAM.
Also note that for !MMU you need to specify the base address and size of
your RAM (DRAM_BASE, DRAM_SIZE) and flash (FLASH_MEM_BASE, FLASH_SIZE).
So the resulting image is hardly runnable on different machines. (I
don't know off-hand why these are needed though, maybe this can be
discussed away.)
So ARCH_MULTIPLATFORM is only good as it allows to simplify a few
things, but the result isn't really multi-platform.
Best regards
Uwe
--
Pengutronix e.K. | Uwe Kleine-K?nig |
Industrial Linux Solutions | http://www.pengutronix.de/ |
next prev parent reply other threads:[~2013-09-26 9:42 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-17 19:58 [PATCH v2] ARM: new platform for Energy Micro's EFM32 Cortex-M3 SoCs Uwe Kleine-König
2013-09-17 20:45 ` Arnd Bergmann
2013-09-18 15:34 ` Uwe Kleine-König
2013-09-19 11:28 ` Arnd Bergmann
2013-09-19 11:34 ` Sebastian Hesselbarth
2013-09-19 12:19 ` Uwe Kleine-König
2013-09-26 9:42 ` Uwe Kleine-König [this message]
2013-09-27 21:44 ` Arnd Bergmann
2013-09-27 21:55 ` Russell King - ARM Linux
2013-09-28 19:15 ` Uwe Kleine-König
2013-09-29 19:00 ` Arnd Bergmann
2013-09-30 15:49 ` Uwe Kleine-König
2013-10-01 10:38 ` Jonathan Austin
2013-09-24 14:00 ` [PATCH] ARM: DEBUG_LL on efm32 SoCs Uwe Kleine-König
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