[PATCH resend] ARM: nommu: remove ARCH_MULTIPLATFORM's dependency on CONFIG_MMU
jonathan.austin at arm.com
Tue Jul 23 12:41:51 EDT 2013
From: Arnd Bergmann <arnd at arndb.de>
ARCH_MULTIPLATFORM currently requires CONFIG_MMU to be set, however it is
intended that all future V6/V7 platforms are compatible with
ARCH_MULTIPLATFORM, and so this requirement precludes that addition of new
Furthermore, this requirement creates unnecessary differences between the MMU
and !MMU worlds, which is undesirable.
This patch allows ARCH_MULTIPLATFORM to remain selected in a !MMU
configuration. There is still a need to hardcode CONFIG_DRAM_BASE and other
parameters relating to the system, so this patch is less about making an
actual multiplatform kernel for !MMU and more about consistency across the
Along with the nommu-fixes, R7 support and MPU support already sent to this
list, this patch is sufficient to allow building and booting of kernel for a
Cortex-R7 core on a Versatile Express platform.
Signed-off-by: Arnd Bergmann <arnd at arndb.de>
Signed-off-by: Jonathan Austin <jonathan.austin at arm.com>
This patch was written by Arnd and after some discussion/testing at my end he
asked me to send it to the list with a full description.
I'm resending this after testing it still allows R7 to boot on 3.11.
Assuming no comments, I'll drop this in the patch system shortly. Any calls for
arch/arm/Kconfig | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 49d993c..5a61686 100644
@@ -289,8 +289,7 @@ choice
bool "Allow multiple platforms to be selected"
- depends on MMU
- select ARM_PATCH_PHYS_VIRT
+ select ARM_PATCH_PHYS_VIRT if MMU
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