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soc: arm: Unify setting of Cortex-M specifc compiler flags

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Moved setting of specific Cortex-M compiler flags in each SoC directory
unify setting them in the arch/arm/soc Makefile.

Add flags for Cortex M0, M0+, M1, M3, M4, and M7.  However only
CONFIG_CPU_CORTEX_M3 and CONFIG_CPU_CORTEX_M4 are supported at this time

As part of this change converted Kbuild files for some SoCs into
Makefiles as the Makefiles would be empty otherwise.

Change-Id: Ie4e0178b141ca761ec482a610ae50e94fe58070f
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
This commit is contained in:
Kumar Gala 2016-05-26 11:13:30 -05:00
commit bbe222cad0
11 changed files with 38 additions and 26 deletions
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1
arch/arm/soc/nordic_nrf5/nrf52/Kbuild
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@ -1 +0,0 @@
obj-y += soc.o

7
arch/arm/soc/nordic_nrf5/nrf52/Makefile
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@ -1,6 +1 @@
soc-cflags = $(call cc-option,-mthumb -mcpu=cortex-m4) \
$(call cc-option,-march=armv7e-m) \
$(call cc-option,-mabi=aapcs)
_CROSS_COMPILE_arm_isa = armv7e-m
export _CROSS_COMPILE_arm_isa
obj-y += soc.o