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

[Phil Edworthy]

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>
---
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