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[hardknott,2/2] armv9a/tune: Add the support for the Neoverse N2 core

Message ID 20220115015044.1142719-3-kexin.hao@windriver.com
State Accepted, archived
Commit 3ceee568313ea7cd3afe33df8119319644e12fa4
Headers show
Series Add tune for Neoverse N2 core | expand

Commit Message

Kevin Hao Jan. 15, 2022, 1:50 a.m. UTC 
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.

(From OE-Core rev: 37597397f03b6b0082a702147dc536ff8b2fa7a3)

Signed-off-by: Kevin Hao <kexin.hao@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
[Kevin: Convert to the old style override syntax]
Signed-off-by: Kevin Hao <kexin.hao@windriver.com>
---
 .../include/arm/armv9a/tune-neoversen2.inc    | 22 +++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 meta/conf/machine/include/arm/armv9a/tune-neoversen2.inc
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Patch

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
index 000000000000..dedabcf46e23
--- /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"