[Buildroot] [PATCH v2 1/3] arch: add support for mcf5441x Colfdire

[Jean-Michel Hautbois]

The m68k family ony has one Coldfire variant, namely the 5208. Add the
support for the MCF5441x CPU family in the configuration file.
This covers MCF54410, MCF54415, MCF54416, MCF54417 and MCF54418.

Commit [1] removed the GCC ARCH configuration which was used to
determine if the architecture is "m68k" or "cf". I have re-introduced
this configuration here, only for the MCF5441x case. It has been tested
as an external toolchain too.

[1]: eda11417be m68k: remove BR2_GCC_TARGET_ARCH

Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois at yoseli.org>
---
 arch/Config.in.m68k | 10 ++++++++++
 toolchain/Config.in |  1 +
 2 files changed, 11 insertions(+)

diff --git a/arch/Config.in.m68k b/arch/Config.in.m68k
index 9fd22aaf1e..c707276e9c 100644
--- a/arch/Config.in.m68k
+++ b/arch/Config.in.m68k
@@ -33,11 +33,21 @@ config BR2_m68k_cf5208
 	select BR2_m68k_cf
 	select BR2_SOFT_FLOAT
 
+config BR2_m68k_cf5441x
+	bool "5441x"
+	select BR2_m68k_cf
+	select BR2_USE_MMU
+	select BR2_SOFT_FLOAT
+
 endchoice
 
 config BR2_GCC_TARGET_CPU
 	default "68040"		if BR2_m68k_68040
 	default "5208"		if BR2_m68k_cf5208
+	default "54455"		if BR2_m68k_cf5441x
+
+config BR2_GCC_TARGET_ARCH
+	default "cf"            if BR2_m68k_cf5441x
 
 config BR2_READELF_ARCH_NAME
 	default "MC68000"
diff --git a/toolchain/Config.in b/toolchain/Config.in
index e8b3db64fb..782b9944d5 100644
--- a/toolchain/Config.in
+++ b/toolchain/Config.in
@@ -100,6 +100,7 @@ config BR2_TOOLCHAIN_SUPPORTS_ALWAYS_LOCKFREE_ATOMIC_INTS
 	depends on !BR2_ARM_CPU_ARMV5
 	depends on !BR2_sparc_v8
 	depends on !BR2_m68k_cf5208
+	depends on !BR2_m68k_cf5441x
 
 # GCC uses thunk functions to adjust the 'this' pointer when calling
 # C++ member functions in classes derived with multiple inheritance.
-- 
2.40.1