[dpdk-dev] [PATCH 1/2] config: add Graviton2(arm64) meson configuration

[Vimal Chungath <vcchunga@amazon.com>]

Add meson build configuration for Graviton2 platform
with 64-bit ARM Neoverse N1 cores. This patch makes the
following changes to generic Neoverse N1 config:

1. increase lcore limit to 64
2. increase memory support to 1TB
3. remove +crc from -march as that is default when setting armv8.2

For more information about Graviton2 platform, refer to:
https://aws.amazon.com/ec2/graviton/

Signed-off-by: Vimal Chungath <vcchunga@amazon.com>
---
 config/arm/arm64_graviton2_linux_gcc | 17 +++++++++++++++++
 config/arm/meson.build               | 12 +++++++++++-
 2 files changed, 28 insertions(+), 1 deletion(-)
 create mode 100644 config/arm/arm64_graviton2_linux_gcc

diff --git a/config/arm/arm64_graviton2_linux_gcc b/config/arm/arm64_graviton2_linux_gcc
new file mode 100644
index 000000000..022e06303
--- /dev/null
+++ b/config/arm/arm64_graviton2_linux_gcc
@@ -0,0 +1,17 @@
+[binaries]
+c = 'aarch64-linux-gnu-gcc'
+cpp = 'aarch64-linux-gnu-cpp'
+ar = 'aarch64-linux-gnu-gcc-ar'
+strip = 'aarch64-linux-gnu-strip'
+pkgconfig = 'aarch64-linux-gnu-pkg-config'
+pcap-config = ''
+
+[host_machine]
+system = 'linux'
+cpu_family = 'aarch64'
+cpu = 'armv8-a'
+endian = 'little'
+
+[properties]
+implementor_id = '0x41'
+implementor_pn = '0xd0c'
diff --git a/config/arm/meson.build b/config/arm/meson.build
index 8728051d5..64e277ebc 100644
--- a/config/arm/meson.build
+++ b/config/arm/meson.build
@@ -86,6 +86,16 @@ flags_octeontx2_extra = [
 	['RTE_ARM_FEATURE_ATOMICS', true],
 	['RTE_EAL_IGB_UIO', false],
 	['RTE_USE_C11_MEM_MODEL', true]]
+flags_n1generic_extra = [
+	['RTE_MACHINE', '"neoverse-n1"'],
+	['RTE_MAX_LCORE', 64],
+	['RTE_CACHE_LINE_SIZE', 64],
+	['RTE_ARM_FEATURE_ATOMICS', true],
+	['RTE_USE_C11_MEM_MODEL', true],
+	['RTE_MAX_MEM_MB', 1048576],
+	['RTE_MAX_NUMA_NODES', 1],
+	['RTE_EAL_NUMA_AWARE_HUGEPAGES', false],
+	['RTE_LIBRTE_VHOST_NUMA', false]]
 
 machine_args_generic = [
 	['default', ['-march=armv8-a+crc']],
@@ -97,7 +107,7 @@ machine_args_generic = [
 	['0xd09', ['-mcpu=cortex-a73']],
 	['0xd0a', ['-mcpu=cortex-a75']],
 	['0xd0b', ['-mcpu=cortex-a76']],
-	['0xd0c', ['-march=armv8.2-a+crc+crypto', '-mcpu=neoverse-n1'], flags_n1sdp_extra]]
+	['0xd0c', ['-march=armv8.2-a+crypto', '-mcpu=neoverse-n1'], flags_n1generic_extra]]
 
 machine_args_cavium = [
 	['default', ['-march=armv8-a+crc+crypto','-mcpu=thunderx']],
-- 
2.16.6