diff options
| -rw-r--r-- | chip/lm4/build.mk | 4 | ||||
| -rw-r--r-- | chip/stm32/build.mk | 2 | ||||
| -rw-r--r-- | core/cortex-m/build.mk | 2 |
3 files changed, 6 insertions, 2 deletions
diff --git a/chip/lm4/build.mk b/chip/lm4/build.mk index f6472aae92..279f15c65d 100644 --- a/chip/lm4/build.mk +++ b/chip/lm4/build.mk @@ -6,8 +6,10 @@ # LM4 chip specific files build # -# LM4 SoC has a Cortex-M4 ARM core +# LM4 SoC has a Cortex-M4F ARM core CORE:=cortex-m +# Allow the full Cortex-M4 instruction set +CFLAGS_CPU+=-march=armv7e-m -mcpu=cortex-m4 # Required chip modules chip-y=clock.o gpio.o hwtimer.o jtag.o system.o uart.o diff --git a/chip/stm32/build.mk b/chip/stm32/build.mk index 8db57f86bf..957478282c 100644 --- a/chip/stm32/build.mk +++ b/chip/stm32/build.mk @@ -8,6 +8,8 @@ # STM32 SoC family has a Cortex-M3 ARM core CORE:=cortex-m +# Force Cortex-M3 subset of instructions +CFLAGS_CPU+=-march=armv7-m -mcpu=cortex-m3 chip-y=dma.o hwtimer.o system.o uart.o chip-y+=jtag-$(CHIP_FAMILY).o clock-$(CHIP_FAMILY).o gpio-$(CHIP_FAMILY).o diff --git a/core/cortex-m/build.mk b/core/cortex-m/build.mk index 5f036bc522..c3ae55a521 100644 --- a/core/cortex-m/build.mk +++ b/core/cortex-m/build.mk @@ -10,7 +10,7 @@ CFLAGS_FPU-$(CONFIG_FPU)=-mfpu=fpv4-sp-d16 -mfloat-abi=hard # CPU specific compilation flags -CFLAGS_CPU=-mcpu=cortex-m4 -mthumb -Os -mno-sched-prolog +CFLAGS_CPU+=-mthumb -Os -mno-sched-prolog CFLAGS_CPU+=-mno-unaligned-access CFLAGS_CPU+=$(CFLAGS_FPU-y) |