[ARM] 4584/2: ARMv7: Add Advanced SIMD (NEON) extension support

This patch enables the use of the Advanced SIMD (NEON) extension on
ARMv7. The NEON technology is a 64/128-bit hybrid SIMD architecture
for accelerating the performance of multimedia and signal processing
applications. The extension shares the registers with the VFP unit and
enabling/disabling and saving/restoring follow the same rules. In
addition, there are instructions that do not have the appropriate CP
number encoded, the checks being made in the call_fpe function.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 7 insertions, 0 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index f4eeb03bc6a9..709f9d383c87 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -966,6 +966,13 @@ config VFPv3
         depends on VFP
         default y if CPU_V7
 
+config NEON
+        bool "Advanced SIMD (NEON) Extension support"
+        depends on VFPv3 && CPU_V7
+        help
+          Say Y to include support code for NEON, the ARMv7 Advanced SIMD
+          Extension.
+
 endmenu
 
 menu "Userspace binary formats"