[OE-core] [PATCH 1/6] arch-armv8a.inc: add tune include for armv8

[Khem Raj]

On Tue, Feb 5, 2019 at 7:57 AM akuster808 <akuster808 at gmail.com> wrote:
>
>
>
> On 2/4/19 6:57 PM, Khem Raj wrote:
>
> From: ayaka <ayaka at soulik.info>
>
> There are some addtional instructions apart from bare armv8,
> also there is armv8.1, armv8.2.
>
> Most the processor would support crc, except X-gene 1.
>
>
> We have had these tune files sent by other folks in the past. Does this settle all the questions from back then ?
>
> It was sent couple months ago, you can find the discussion in various
> threads, e.g.:
> http://lists.openembedded.org/pipermail/openembedded-core/2015-October/111318.html
> http://lists.openembedded.org/pipermail/openembedded-core/2015-November/112907.html
>

these are not relevant here.

> http://lists.openembedded.org/pipermail/openembedded-core/2016-March/118579.html
>

This I have looked at. Eventually, I plan to add aarch32 bit tunes as well
for now, I just want to make aarch64 piece look good with option to
have aarch32 in mind, if there are specific questions I would be
interested to here

> and more.
>
> - armin
>
> Signed-off-by: Randy Li <ayaka at soulik.info>
> Signed-off-by: Khem Raj <raj.khem at gmail.com>
> ---
>  meta/conf/machine/include/arm/arch-armv8.inc  |  1 -
>  meta/conf/machine/include/arm/arch-armv8a.inc | 28 +++++++++++++++++++
>  2 files changed, 28 insertions(+), 1 deletion(-)
>  delete mode 100644 meta/conf/machine/include/arm/arch-armv8.inc
>  create mode 100644 meta/conf/machine/include/arm/arch-armv8a.inc
>
> diff --git a/meta/conf/machine/include/arm/arch-armv8.inc b/meta/conf/machine/include/arm/arch-armv8.inc
> deleted file mode 100644
> index 5e832fae6d..0000000000
> --- a/meta/conf/machine/include/arm/arch-armv8.inc
> +++ /dev/null
> @@ -1 +0,0 @@
> -require conf/machine/include/arm/arch-arm64.inc
> diff --git a/meta/conf/machine/include/arm/arch-armv8a.inc b/meta/conf/machine/include/arm/arch-armv8a.inc
> new file mode 100644
> index 0000000000..323d0d7f0f
> --- /dev/null
> +++ b/meta/conf/machine/include/arm/arch-armv8a.inc
> @@ -0,0 +1,28 @@
> +DEFAULTTUNE ?= "armv8a-crc"
> +
> +TUNEVALID[armv8a] = "Enable instructions for ARMv8-a"
> +TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'armv8a', ' -march=armv8-a', '', d)}"
> +TUNEVALID[simd] = "Enable instructions for ARMv8-a Advanced SIMD and floating-point"
> +TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'simd', '+simd', '', d)}"
> +TUNEVALID[crc] = "Enable instructions for ARMv8-a Cyclic Redundancy Check (CRC)"
> +TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'crc', '+crc', '', d)}"
> +TUNEVALID[crypto] = "Enable instructions for ARMv8-a cryptographic"
> +TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'crypto', '+crypto', '', d)}"
> +MACHINEOVERRIDES =. "${@bb.utils.contains('TUNE_FEATURES', 'armv8a', 'armv8a:', '' ,d)}"
> +
> +require conf/machine/include/arm/arch-arm64.inc
> +
> +# Little Endian base configs
> +AVAILTUNES += "armv8a armv8a-crc armv8a-crc-crypto armv8a-crypto"
> +ARMPKGARCH_tune-armv8a                    ?= "armv8a"
> +ARMPKGARCH_tune-armv8a-crc                ?= "armv8a"
> +ARMPKGARCH_tune-armv8a-crypto             ?= "armv8a"
> +ARMPKGARCH_tune-armv8a-crc-crypto         ?= "armv8a"
> +TUNE_FEATURES_tune-armv8a                  = "aarch64 armv8a simd"
> +TUNE_FEATURES_tune-armv8a-crc              = "${TUNE_FEATURES_tune-armv8a} crc"
> +TUNE_FEATURES_tune-armv8a-crypto           = "${TUNE_FEATURES_tune-armv8a} crypto"
> +TUNE_FEATURES_tune-armv8a-crc-crypto       = "${TUNE_FEATURES_tune-armv8a-crc} crypto"
> +PACKAGE_EXTRA_ARCHS_tune-armv8a            = "aarch64 armv8a simd"
> +PACKAGE_EXTRA_ARCHS_tune-armv8a-crc        = "${PACKAGE_EXTRA_ARCHS_tune-armv8a} crc"
> +PACKAGE_EXTRA_ARCHS_tune-armv8a-crypto     = "${PACKAGE_EXTRA_ARCHS_tune-armv8a} crypto"
> +PACKAGE_EXTRA_ARCHS_tune-armv8a-crc-crypto = "${PACKAGE_EXTRA_ARCHS_tune-armv8a-crc} crypto"
>
>