armv9a/tune: Add the support for the Neoverse N2 core

This adds the support for the Neoverse N2 core, even though the
Neoverse N2 core implements the Arm v9.0-A architecture, but the support
of it in GCC is based on the Arm v8.5-A architecture. Please see the
commit 50d9db203bc3 ("aarch64: Add support for Neoverse N2 CPU") in GCC
for more detail.

Signed-off-by: Kevin Hao <kexin.hao@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

diff --git a/meta/conf/machine/include/arm/armv9a/tune-neoversen2.inc b/meta/conf/machine/include/arm/armv9a/tune-neoversen2.inc
new file mode 100644 (file)
index 0000000..36355f7
--- /dev/null
+++ b/meta/conf/machine/include/arm/armv9a/tune-neoversen2.inc
@@ -0,0 +1,22 @@
+#
+# Tune Settings for Neoverse-N2
+#
+DEFAULTTUNE ?= "neoversen2"
+
+TUNEVALID[neoversen2] = "Enable Neoverse-N2 specific processor optimizations"
+TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'neoversen2', ' -mcpu=neoverse-n2', '', d)}"
+
+# Even though the Neoverse N2 core implemnts the Arm v9.0-A architecture,
+# but the support of it in GCC is based on the Arm v8.5-A architecture.
+require conf/machine/include/arm/arch-armv8-5a.inc
+
+# Little Endian base configs
+AVAILTUNES                                         += "neoversen2 neoversen2-crypto"
+ARMPKGARCH:tune-neoversen2                          = "neoversen2"
+ARMPKGARCH:tune-neoversen2-crypto                   = "neoversen2-crypto"
+TUNE_FEATURES:tune-neoversen2                       = "${TUNE_FEATURES:tune-armv8-5a} neoversen2"
+TUNE_FEATURES:tune-neoversen2-crypto                = "${TUNE_FEATURES:tune-neoversen2} crypto"
+PACKAGE_EXTRA_ARCHS:tune-neoversen2                 = "${PACKAGE_EXTRA_ARCHS:tune-armv8-5a} neoversen2"
+PACKAGE_EXTRA_ARCHS:tune-neoversen2-crypto          = "${PACKAGE_EXTRA_ARCHS:tune-armv8-5a-crypto} neoversen2 neoversen2-crypto"
+BASE_LIB:tune-neoversen2                            = "lib64"
+BASE_LIB:tune-neoversen2-crypto                     = "lib64"