[Blackfin] arch: Initial checkin of the memory protection support.

Enable it with CONFIG_MPU.

Signed-off-by: Bernd Schmidt <bernd.schmidt@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig
index ce521a921bee..6b96d7d21aea 100644
--- a/arch/blackfin/Kconfig
+++ b/arch/blackfin/Kconfig
@@ -765,6 +765,15 @@ config L1_MAX_PIECE
           Set the max memory pieces for the L1 SRAM allocation algorithm.
           Min value is 16. Max value is 1024.
 
+
+config MPU
+        bool "Enable the memory protection unit (EXPERIMENTAL)"
+        default n
+        help
+          Use the processor's MPU to protect applications from accessing
+          memory they do not own.  This comes at a performance penalty
+          and is recommended only for debugging.
+
 comment "Asynchonous Memory Configuration"
 
 menu "EBIU_AMGCTL Global Control"