nios2: Add Nios2 R2 CDX support

Add support for the Nios2 R2 Code Density Extension, which is a
completely new 16/32-bit instruction set addition to reduce size
of the code and increase performance.

Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/conf/machine/include/tune-nios2.inc b/conf/machine/include/tune-nios2.inc
index c8e02d7..784ccfd 100644
--- a/conf/machine/include/tune-nios2.inc
+++ b/conf/machine/include/tune-nios2.inc
@@ -54,6 +54,12 @@ TUNECONFLICTS[bmx] = "nios2 bigendian"
 TUNE_CCARGS .= "${@bb.utils.contains("TUNE_FEATURES", "bmx", " -mbmx", "" ,d)}"
 TUNE_PKGARCH .= "${@bb.utils.contains("TUNE_FEATURES", "bmx", "-bmx", "" ,d)}"
 
+# Nios2 R2 CDX opcodes
+TUNEVALID[cdx] = "Enable Nios2 R2 Code Density Extension."
+TUNECONFLICTS[cdx] = "nios2 bigendian"
+TUNE_CCARGS .= "${@bb.utils.contains("TUNE_FEATURES", "cdx", " -mcdx", "" ,d)}"
+TUNE_PKGARCH .= "${@bb.utils.contains("TUNE_FEATURES", "cdx", "-cdx", "" ,d)}"
+
 # Architecture configuration
 AVAILTUNES += "nios2 nios2eb nios2r2"