Re: [dpdk-dev] [PATCH v2 5/5] config: add Arm Neoverse N2

[Honnappa Nagarahalli <Honnappa.Nagarahalli@arm.com>]

+ Juraj

Please note that this clashes with Juraj's patch for meson rework.

<snip>

> 
> Add Arm Neoverse N2 cpu support.
> 
> Signed-off-by: Ruifeng Wang <ruifeng.wang@arm.com>
> ---
>  config/arm/arm64_n2_linux_gcc | 17 +++++++++++++++++
>  config/arm/meson.build        | 11 ++++++++++-
>  2 files changed, 27 insertions(+), 1 deletion(-)  create mode 100644
> config/arm/arm64_n2_linux_gcc
> 
> diff --git a/config/arm/arm64_n2_linux_gcc
> b/config/arm/arm64_n2_linux_gcc new file mode 100644 index
> 000000000..78f6f3e2b
> --- /dev/null
> +++ b/config/arm/arm64_n2_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 = '0xd49'
> diff --git a/config/arm/meson.build b/config/arm/meson.build index
> 42b4e43c7..58e0ae643 100644
> --- a/config/arm/meson.build
> +++ b/config/arm/meson.build
> @@ -89,6 +89,14 @@ flags_n1generic_extra = [
>  	['RTE_MAX_NUMA_NODES', 1],
>  	['RTE_EAL_NUMA_AWARE_HUGEPAGES', false],
>  	['RTE_LIBRTE_VHOST_NUMA', false]]
> +flags_n2generic_extra = [
> +	['RTE_MACHINE', '"neoverse-n2"'],
> +	['RTE_MAX_LCORE', 64],
> +	['RTE_CACHE_LINE_SIZE', 64],
> +	['RTE_ARM_FEATURE_ATOMICS', true],
> +	['RTE_USE_C11_MEM_MODEL', true],
> +	['RTE_EAL_NUMA_AWARE_HUGEPAGES', false],
> +	['RTE_LIBRTE_VHOST_NUMA', false]]
Do we need a flag RTE_ARM_FEATURE_SVE?

> 
>  machine_args_generic = [
>  	['default', ['-march=armv8-a+crc', '-moutline-atomics']], @@ -100,7
> +108,8 @@ machine_args_generic = [
>  	['0xd09', ['-mcpu=cortex-a73']],
>  	['0xd0a', ['-mcpu=cortex-a75']],
>  	['0xd0b', ['-mcpu=cortex-a76']],
> -	['0xd0c', ['-march=armv8.2-a+crypto', '-mcpu=neoverse-n1'],
> flags_n1generic_extra]]
> +	['0xd0c', ['-march=armv8.2-a+crypto', '-mcpu=neoverse-n1'],
> flags_n1generic_extra],
> +	['0xd49', ['-march=armv8.5-a+crypto+sve'], flags_n2generic_extra]]
Should this be 'sve2'? There should be a flag to indicate SVE2.

> 
>  machine_args_cavium = [
>  	['default', ['-march=armv8-a+crc+crypto','-mcpu=thunderx']],
> --
> 2.25.1