commit a3823223f6a2ed78614f8aba6c3a5d2e232a7119
author Albert ARIBAUD <albert.u.boot@aribaud.net> Fri Oct 23 18:06:40 2015 +0200
committer Albert ARIBAUD <albert.u.boot@aribaud.net> Tue Nov 10 15:03:48 2015 +0100
tree 98bf9f9796ab466ad1bff97c7672d5c3159526d3
parent 275d50935439ccab65b357df04b9ebe3b0366ab5

arm: support Thumb-1 with CONFIG_SYS_THUMB_BUILD

When building a Thumb-1-only target with CONFIG_SYS_THUMB_BUILD,
some files fail to build, most of the time because they include
mcr instructions, which only exist for Thumb-2.

This patch introduces a Kconfig option CONFIG_THUMB2 and uses
it to select between Thumb-2 and ARM mode for the aforementioned
files.

Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net>

arch/arm/Kconfig

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 0d756cb..5ab0254 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -10,6 +10,9 @@
 config HAS_VBAR
         bool
 
+config HAS_THUMB2
+        bool
+
 config CPU_ARM720T
         bool
 
@@ -32,9 +35,11 @@
 config CPU_V7
         bool
         select HAS_VBAR
+        select HAS_THUMB2
 
 config CPU_V7M
 	bool
+        select HAS_THUMB2
 
 config CPU_PXA
         bool