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Message-ID: <20080201084645.GA10969@uranus.ravnborg.org>
Date: Fri, 1 Feb 2008 09:46:45 +0100
From: Sam Ravnborg <sam@...nborg.org>
To: Greg Ungerer <gerg@...pgear.com>
Cc: torvalds@...ux-foundation.org, gerg@...inux.org,
linux-kernel@...r.kernel.org
Subject: Re: [M68KNOMMU 06/06]: modify Makefiles to support common coldfire directory
Hi Greg.
On Fri, Feb 01, 2008 at 05:37:56PM +1000, Greg Ungerer wrote:
> Modify Makefiles to support separate coldfire platform directory.
>
> Currently the common ColdFire CPU family code sits in the
> arch/m68knommu/platform/5307 directory. This is confusing, the files
> containing this common code are in no way specific to the 5307 ColdFire.
> Create an arch/m68knommu/platform/coldfire directory to contain this
> common code. Other m68knommu CPU varients do not need use this code
> though, so it doesn't make sense to move it to arch/m68knommu/kernel.
>
> Signed-off-by: Greg Ungerer <gerg@...inux.org
>
>
> diff -Naurp linux-2.6.24/arch/m68knommu/Makefile linux-2.6.24.1/arch/m68knommu/Makefile
> --- linux-2.6.24/arch/m68knommu/Makefile 2008-01-25 08:58:37.000000000 +1000
> +++ linux-2.6.24.1/arch/m68knommu/Makefile 2008-01-31 17:04:07.000000000 +1000
> @@ -61,17 +61,17 @@ MODEL := $(model-y)
> # for the selected cpu. ONLY need to define this for the non-base member
> # of the family.
> #
> -cpuclass-$(CONFIG_M5206) := 5307
> -cpuclass-$(CONFIG_M5206e) := 5307
> -cpuclass-$(CONFIG_M520x) := 5307
> -cpuclass-$(CONFIG_M523x) := 5307
> -cpuclass-$(CONFIG_M5249) := 5307
> -cpuclass-$(CONFIG_M527x) := 5307
> -cpuclass-$(CONFIG_M5272) := 5307
> -cpuclass-$(CONFIG_M528x) := 5307
> -cpuclass-$(CONFIG_M5307) := 5307
> -cpuclass-$(CONFIG_M532x) := 5307
> -cpuclass-$(CONFIG_M5407) := 5307
> +cpuclass-$(CONFIG_M5206) := coldfire
> +cpuclass-$(CONFIG_M5206e) := coldfire
> +cpuclass-$(CONFIG_M520x) := coldfire
> +cpuclass-$(CONFIG_M523x) := coldfire
> +cpuclass-$(CONFIG_M5249) := coldfire
> +cpuclass-$(CONFIG_M527x) := coldfire
> +cpuclass-$(CONFIG_M5272) := coldfire
> +cpuclass-$(CONFIG_M528x) := coldfire
> +cpuclass-$(CONFIG_M5307) := coldfire
> +cpuclass-$(CONFIG_M532x) := coldfire
> +cpuclass-$(CONFIG_M5407) := coldfire
I would suggest to alwyas descend into coldfire/ and
in the coldfire/Makefile decide what to build.
For some models thats nothing but thats OK.
> cpuclass-$(CONFIG_M68328) := 68328
> cpuclass-$(CONFIG_M68EZ328) := 68328
> cpuclass-$(CONFIG_M68VZ328) := 68328
> diff -Naurp linux-2.6.24/arch/m68knommu/platform/5307/Makefile linux-2.6.24.1/arch/m68knommu/platform/5307/Makefile
> --- linux-2.6.24/arch/m68knommu/platform/5307/Makefile 2008-01-25 08:58:37.000000000 +1000
> +++ linux-2.6.24.1/arch/m68knommu/platform/5307/Makefile 2008-01-31 16:35:54.000000000 +1000
> @@ -16,17 +16,5 @@ ifdef CONFIG_FULLDEBUG
> EXTRA_AFLAGS += -DDEBUGGER_COMPATIBLE_CACHE=1
> endif
Please use:
asflags-y := -DDEBUGGER_COMPATIBLE_CACHE=1
I know you did not change that line - but wanted to comment it anyway.
> diff -Naurp linux-2.6.24/arch/m68knommu/platform/coldfire/Makefile linux-2.6.24.1/arch/m68knommu/platform/coldfire/Makefile
> --- linux-2.6.24/arch/m68knommu/platform/coldfire/Makefile 1970-01-01 10:00:00.000000000 +1000
> +++ linux-2.6.24.1/arch/m68knommu/platform/coldfire/Makefile 2008-01-31 16:35:13.000000000 +1000
> @@ -0,0 +1,32 @@
> +#
> +# Makefile for the m68knommu kernel.
> +#
> +
> +#
> +# If you want to play with the HW breakpoints then you will
> +# need to add define this, which will give you a stack backtrace
> +# on the console port whenever a DBG interrupt occurs. You have to
> +# set up you HW breakpoints to trigger a DBG interrupt:
> +#
> +# EXTRA_CFLAGS += -DTRAP_DBG_INTERRUPT
> +# EXTRA_AFLAGS += -DTRAP_DBG_INTERRUPT
> +#
> +
> +ifdef CONFIG_FULLDEBUG
> +AFLAGS += -DDEBUGGER_COMPATIBLE_CACHE=1
> +endif
Please use:
asflags-$(CONFIG_FULL_DEBUG) := -DDEBUGGER_COMPATIBLE_CACHE=1
> +
> +obj-$(CONFIG_COLDFIRE) += dma.o entry.o vectors.o
> +obj-$(CONFIG_M5206) += timers.o
> +obj-$(CONFIG_M5206e) += timers.o
> +obj-$(CONFIG_M520x) += pit.o
> +obj-$(CONFIG_M523x) += pit.o
> +obj-$(CONFIG_M5249) += timers.o
> +obj-$(CONFIG_M527x) += pit.o
> +obj-$(CONFIG_M5272) += timers.o
> +obj-$(CONFIG_M528x) += pit.o
> +obj-$(CONFIG_M5307) += timers.o
> +obj-$(CONFIG_M532x) += timers.o
> +obj-$(CONFIG_M5407) += timers.o
> +
> +extra-y := head.o
Sam
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