Re: [U-Boot] [PATCH v2] armv7m: Fix larger builds

On Wed, May 31, 2017 at 08:27:05AM +0100, Phil Edworthy wrote:

The branch instruction only has an 11-bit relative target address, which is sometimes not enough.

Signed-off-by: Phil Edworthy phil.edworthy@renesas.com

v2:

• Use W(b) instead of ldr+mov. Using this macro requires CONFIG_ARM_ASM_UNIFIED and CONFIG_THUMB2_KERNEL to be defined.

---

arch/arm/cpu/armv7m/Makefile | 3 +++ arch/arm/cpu/armv7m/start.S | 4 +++- 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/arch/arm/cpu/armv7m/Makefile b/arch/arm/cpu/armv7m/Makefile index 257fc7f..df1fc95 100644 --- a/arch/arm/cpu/armv7m/Makefile +++ b/arch/arm/cpu/armv7m/Makefile @@ -8,3 +8,6 @@ extra-y := start.o obj-y += cpu.o cache.o mpu.o obj-$(CONFIG_SYS_ARCH_TIMER) += systick-timer.o

+asflags-y += -DCONFIG_ARM_ASM_UNIFIED +asflags-y += -DCONFIG_THUMB2_KERNEL

Lets move these two symbols to Kconfig and select them on CPU_V7M, thanks!