[Buildroot] [PATCH 03/16] arch/arm: add Cortex-M4 entry

[Thomas Petazzoni]

This commit adds the option to select the Cortex-M4 ARM core, in the
same family as Cortex-M3. This will be useful to enable the internal
toolchain backend for this ARM core, and provide some defconfigs for
Cortex-M4 platforms.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
---
 arch/Config.in.arm | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/Config.in.arm b/arch/Config.in.arm
index cd1ec33..ee612f5 100644
--- a/arch/Config.in.arm
+++ b/arch/Config.in.arm
@@ -174,6 +174,10 @@ config BR2_cortex_m3
 	bool "cortex-M3"
 	select BR2_ARM_CPU_HAS_THUMB2
 	select BR2_ARM_CPU_ARMV7M
+config BR2_cortex_m4
+	bool "cortex-M4"
+	select BR2_ARM_CPU_HAS_THUMB2
+	select BR2_ARM_CPU_ARMV7M
 config BR2_fa526
 	bool "fa526/626"
 	select BR2_ARM_CPU_HAS_ARM
@@ -455,6 +459,7 @@ config BR2_GCC_TARGET_CPU
 	default "cortex-a15"	if BR2_cortex_a15
 	default "cortex-a17"	if BR2_cortex_a17
 	default "cortex-m3"	if BR2_cortex_m3
+	default "cortex-m4"	if BR2_cortex_m4
 	default "fa526"		if BR2_fa526
 	default "marvell-pj4"	if BR2_pj4
 	default "strongarm"	if BR2_strongarm
-- 
2.6.4