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authorArnd Bergmann <arnd@arndb.de>2015-12-17 19:45:47 +0300
committerArnd Bergmann <arnd@arndb.de>2015-12-17 19:45:47 +0300
commit70722803de91a7670979dcb5748631b4e3c1b219 (patch)
tree1b34eb87310cfd6b69e8b73a9588a0dbb7d46110 /arch/arm/Kconfig
parent06920d4eeabcd824436ace6fbd6cf49739a5812a (diff)
downloadlinux-70722803de91a7670979dcb5748631b4e3c1b219.tar.xz
ARM: make default platform work for NOMMU
Moving ARCH_VERSATILE into ARCH_MULTIPLATFORM means that it no longer works as the default target for MMU-less kernels. While we might want to get that working again in the future, it's also a rather bad default, and it makes sense to make ARM_SINGLE_V7M the default because that is what realistically all NOMMU users on ARM are using, and it actually is what gets selected by default in the absence of versatile in the choice statement. Related to this, 'allnoconfig' kernels fail to link with the new default, as they do not include a machine record: arm-linux-gnueabi-ld: no machine record defined For ARCH_MULTIPLATFORM kernels, we avoid this error by using a default machine descriptor that works for all trivial platforms, like ARCH_VIRT. The same reasoning applies for ARM_SINGLE_V7M, as that can also boot with empty machine descriptors both on qemu and on real hardware, as long as all the drivers are present. We could also follow up with a patch to remove the existing machine descriptors for the ARMv7M platforms, the only callback pointer the four platforms contain today is the armv7m_restart handler and we can simply make that the default for v7M with an add-on patch. Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/arm/Kconfig')
-rw-r--r--arch/arm/Kconfig2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 72c1df041ae8..a0fda44551ec 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -313,7 +313,7 @@ config MMU
#
choice
prompt "ARM system type"
- default ARCH_VERSATILE if !MMU
+ default ARM_SINGLE_ARMV7M if !MMU
default ARCH_MULTIPLATFORM if MMU
config ARCH_MULTIPLATFORM