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arch: Add support for Cortex-M7 processor

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All M7 features common to M3/M4 are working. New features like Tightly
Coupled Memory (TCM) are not yet supported.

Change-Id: I5f7b292e70843aec415728f24c973bb003014f4b
Jira: ZEP-977
Signed-off-by: Piotr Mienkowski <Piotr.Mienkowski@schmid-telecom.ch>
This commit is contained in:
Piotr Mienkowski 2016-09-27 11:55:39 +02:00 • committed by Kumar Gala
commit 378fa6598f
3 changed files with 42 additions and 10 deletions
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9
arch/arm/Makefile
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@ -14,19 +14,19 @@ cflags-cortex-m3 = $(call cc-option,-mabi=aapcs -mthumb -mcpu=cortex-m3) \
$(call cc-option,-mthumb -march=armv7-m)
cflags-cortex-m4 = $(call cc-option,-mabi=aapcs -mthumb -mcpu=cortex-m4) \
$(call cc-option,-mthumb -march=armv7e-m)
cflags-cortex-m7 = $(call cc-option,-mabi=aapcs -mthumb -mcpu=cortex-m7)
ifeq ($(CONFIG_FLOAT), y)
ifeq ($(CONFIG_FP_SOFTABI), y)
cflags-cortex-m4 += $(call cc-option,-mfloat-abi=softfp -mfpu=fpv4-sp-d16)
cflags-cortex-m7 += $(call cc-option,-mfloat-abi=softfp -mfpu=fpv5-d16)
endif
ifeq ($(CONFIG_FP_HARDABI), y)
cflags-cortex-m4 += $(call cc-option,-mfloat-abi=hard -mfpu=fpv4-sp-d16)
cflags-cortex-m7 += $(call cc-option,-mfloat-abi=hard -mfpu=fpv5-d16)
endif
endif
cflags-cortex-m7 = $(call cc-option,-mabi=aapcs -mthumb -mcpu=cortex-m7) \
$(call cc-option,-mthumb -march=armv7e-m)
aflags-$(CONFIG_CPU_CORTEX_M0) += $(cflags-cortex-m0)
cflags-$(CONFIG_CPU_CORTEX_M0) += $(cflags-cortex-m0)
cxxflags-$(CONFIG_CPU_CORTEX_M0) += $(cflags-cortex-m0)
@ -43,6 +43,9 @@ aflags-$(CONFIG_CPU_CORTEX_M4) += $(cflags-cortex-m4)
cflags-$(CONFIG_CPU_CORTEX_M4) += $(cflags-cortex-m4)
cxxflags-$(CONFIG_CPU_CORTEX_M4) += $(cflags-cortex-m4)
aflags-$(CONFIG_CPU_CORTEX_M7) += $(cflags-cortex-m7)
cflags-$(CONFIG_CPU_CORTEX_M7) += $(cflags-cortex-m7)
cxxflags-$(CONFIG_CPU_CORTEX_M7) += $(cflags-cortex-m7)
KBUILD_AFLAGS += $(aflags-y)
KBUILD_CFLAGS += $(cflags-y)