[dpdk-dev] [PATCH v9 5/5] doc: add aarch32 build guidance
Aaron Conole
aconole at redhat.com
Fri Sep 11 15:20:12 CEST 2020
Juraj Linkeš <juraj.linkes at pantheon.tech> writes:
> From: Phil Yang <phil.yang at arm.com>
>
> Add cross-compiling guidance for 32-bit aarch32 DPDK on aarch64 host.
>
> Change-Id: Ib4281defa37ed4d08e1c3210c94fb7ce73b36449
> Signed-off-by: Phil Yang <phil.yang at arm.com>
> ---
I think Change-Id is not a tag that is used in DPDK. Otherwise, this
looks good to me.
Consider the series ACK with 'Change-Id' removed.
> .../linux_gsg/cross_build_dpdk_for_arm64.rst | 34 +++++++++++++------
> 1 file changed, 24 insertions(+), 10 deletions(-)
>
> diff --git a/doc/guides/linux_gsg/cross_build_dpdk_for_arm64.rst b/doc/guides/linux_gsg/cross_build_dpdk_for_arm64.rst
> index c5875a6d5..fd0405d6d 100644
> --- a/doc/guides/linux_gsg/cross_build_dpdk_for_arm64.rst
> +++ b/doc/guides/linux_gsg/cross_build_dpdk_for_arm64.rst
> @@ -1,15 +1,16 @@
> .. SPDX-License-Identifier: BSD-3-Clause
> Copyright(c) 2018 ARM Corporation.
>
> -Cross compile DPDK for ARM64
> -============================
> -This chapter describes how to cross compile DPDK for ARM64 from x86 build hosts.
> +Cross compile DPDK for aarch64 and aarch32
> +==========================================
> +This chapter describes how to cross compile DPDK for aarch64 from x86 build hosts and compile
> +32-bit aarch32 DPDK from aarch64 build hosts.
>
> .. note::
>
> - Whilst it is recommended to natively build DPDK on ARM64 (just
> - like with x86), it is also possible to cross-build DPDK for ARM64. An
> - ARM64 cross compile GNU toolchain is used for this.
> + Whilst it is recommended to natively build DPDK on aarch64 (just
> + like with x86), it is also possible to cross-build DPDK for aarch64.
> + An aarch64 cross compile GNU toolchain is used for this.
>
> Obtain the cross tool chain
> ---------------------------
> @@ -88,18 +89,31 @@ To install it in Ubuntu::
>
> sudo apt-get install pkg-config-aarch64-linux-gnu
>
> -To cross-compile DPDK on a desired target machine we can use the following
> -command::
> +.. note::
> +
> + Some aarch64 platforms support EL0 aarch32 mode, which means the 32-bit aarch32 applications
> + can run on aarch64. The armhf architecture toolchain ``gcc-arm-linux-gnueabihf`` is required
> + for aarch32 on aarch64. To install it in Ubuntu::
> +
> + sudo dpkg --add-architecture armhf
> + sudo apt-get update
> + sudo apt-get install -y gcc-arm-linux-gnueabihf libc6:armhf binutils
> +
> +To cross-compile DPDK on a desired target machine use the following command::
>
> meson cross-build --cross-file <target_machine_configuration>
> ninja -C cross-build
>
> -For example if the target machine is arm64 we can use the following
> -command::
> +For example if the target machine is aarch64 use the following command::
>
> meson arm64-build --cross-file config/arm/arm64_armv8_linux_gcc
> ninja -C arm64-build
>
> +If the target machine is aarch32 use the following command::
> +
> + meson arm32-build --cross-file config/arm/arm32_armv8a_linux_gcc
> + ninja -C arm32-build
> +
> Configure and Cross Compile DPDK using Make
> -------------------------------------------
> To configure a build, choose one of the target configurations, like arm64-dpaa-linux-gcc and arm64-thunderx-linux-gcc.
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