arch: make __ramfunc support transparent
Instead of having to enable ramfunc support manually, just make it
transparently available to users, keeping the MPU region disabled if not
used to not waste a MPU region. This however wastes 24 bytes of code
area when the MPU is disabled and 48 bytes when it is enabled, and
probably a dozen of CPU cycles during boot. I believe it is something
acceptable.
Note that when XIP is used, code is already in RAM, so the __ramfunc
keyword does nothing, but does not generate an error.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
diff --git a/arch/Kconfig b/arch/Kconfig
index 7790fde..f30e583 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -336,6 +336,9 @@
config ARCH_HAS_NOCACHE_MEMORY_SUPPORT
bool
+config ARCH_HAS_RAMFUNC_SUPPORT
+ bool
+
#
# Other architecture related options
#
