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

[Vikas MANOCHA]

> On May 31, 2017, at 12:27 AM, Phil Edworthy <phil.edworthy at renesas.com> wrote:
> 
> The branch instruction only has an 11-bit relative target address, which
> is sometimes not enough.
> 
> Signed-off-by: Phil Edworthy <phil.edworthy at renesas.com>

Reviewed-by: Vikas Manocha <vikas.manocha at st.com>

Cheers,
Vikas

> ---
> 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
> diff --git a/arch/arm/cpu/armv7m/start.S b/arch/arm/cpu/armv7m/start.S
> index 49f2720..890c773 100644
> --- a/arch/arm/cpu/armv7m/start.S
> +++ b/arch/arm/cpu/armv7m/start.S
> @@ -5,10 +5,12 @@
>  * SPDX-License-Identifier:    GPL-2.0+
>  */
> 
> +#include <asm/assembler.h>
> +
> .globl    reset
> .type reset, %function
> reset:
> -    b    _main
> +    W(b)    _main
> 
> .globl    c_runtime_cpu_setup
> c_runtime_cpu_setup:
> -- 
> 2.7.4
>