[PATCH v3 2/3] ARM: nommu: re-enable use of vexpress without ARCH_MULTIPLATFORM

Jonathan Austin jonathan.austin at arm.com
Fri Jun 7 06:48:30 EDT 2013

Since 617276307cd4c ("ARM: vexpress: convert to multi-platform") it has been
impossible to select ARCH_VEXPRESS without ARCH_MULTIPLATFORM.

ARCH_MULTIPLATFORM doesn't make sense for NOMMU targets, not least because
of the need to hard-code the memory map. However, it should still be
possible to run NOMMU kernels on top of the Versatile Express by selecting
it as the only platform.

This patch creates a shim ARCH_VEXPRESS_NOMMU config option in the 'choice'
for "ARM system type" to make this possible again.

Signed-off-by: Jonathan Austin <jonathan.austin at arm.com>
Signed-off-by: Will Deacon <will.deacon at arm.com>
Acked-by: Nicolas Pitre <nico at fluxnic.net>
Acked-by: Arnd Bergmann <arnd at arndb.de>
CC: Pawel Moll <pawel.moll at arm.com>
 arch/arm/Kconfig |   17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index f018924..7801b91 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -351,6 +351,23 @@ config ARCH_VERSATILE
 	  This enables support for ARM Ltd Versatile board.
+	bool "ARM Ltd. Versatile Express family for NOMMU"
+	depends on !MMU
+	select SPARSE_IRQ
+	help
+	  This option enables support for systems using Cortex processor based
+	  ARM core and logic (FPGA) tiles on the Versatile Express motherboard,
+	  in configurations WITHOUT an MMU. You must boot using a Flattened
+	  Device Tree - the traditional ATAGs boot method is not usable with
+	  this configuration.
+	  If your system has an MMU and you want to make use of it, you
+	  should instead choose to build a multiplatform kernel and
+	  select ARCH_VEXPRESS
 config ARCH_AT91
 	bool "Atmel AT91"

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