On Tue, Aug 18, 2020 at 2:13 PM Jonathan Richardson via
lists.openembedded.org
<[email protected]> wrote:
>
> Add tuning files for ARM cortex m0 plus and the armv6-m architecture
> that it is based on.
>
> Signed-off-by: Jonathan Richardson <[email protected]>
> ---
> meta/conf/machine/include/arm/arch-armv6m.inc | 20 +++++++++++++++++++
> .../machine/include/tune-cortex-m0plus.inc | 11 ++++++++++
> 2 files changed, 31 insertions(+)
> create mode 100755 meta/conf/machine/include/arm/arch-armv6m.inc
> create mode 100755 meta/conf/machine/include/tune-cortex-m0plus.inc
>
> diff --git a/meta/conf/machine/include/arm/arch-armv6m.inc
> b/meta/conf/machine/include/arm/arch-armv6m.inc
> new file mode 100755
> index 0000000000..8202ef52f7
> --- /dev/null
> +++ b/meta/conf/machine/include/arm/arch-armv6m.inc
> @@ -0,0 +1,20 @@
> +# Tuning for ARMV6-m defined in ARM v6-M ArchitectureReference Manual
> +# at https://static.docs.arm.com/ddi0419/d/DDI0419D_armv6m_arm.pdf
> +DEFAULTTUNE ?= "armv6m"
> +
> +TUNEVALID[armv6m] = "Enable instructions for ARMv6-m"
> +TUNECONFLICTS[armv6m] = "armv4 armv5 armv6 armv7a"
> +
> +# Use armv6s-m instead of armv6-m to avoid gcc bug "SVC is not permitted on
> this architecture".
> +# SVC is a valid instruction.
> +TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'armv6m', '
> -march=armv6s-m', '', d)}"
> +MACHINEOVERRIDES =. "${@bb.utils.contains('TUNE_FEATURES', 'armv6m',
> 'armv6m:', '' ,d)}"
> +
> +require conf/machine/include/arm/arch-armv5.inc
> +
> +# Little Endian
> +AVAILTUNES += "armv6m"
> +ARMPKGARCH_tune-armv6m = "armv6m"
> +TUNE_FEATURES_tune-armv6m = "armv6m"
> +PACKAGE_EXTRA_ARCHS_tune-armv6m = "armv6m"
> +BASE_LIB_tune-armv6m = "lib32"
do we need BASE_LIB defined here ?
> diff --git a/meta/conf/machine/include/tune-cortex-m0plus.inc
> b/meta/conf/machine/include/tune-cortex-m0plus.inc
> new file mode 100755
> index 0000000000..1c7512b061
> --- /dev/null
> +++ b/meta/conf/machine/include/tune-cortex-m0plus.inc
> @@ -0,0 +1,11 @@
> +DEFAULTTUNE ?= "cortexm0-plus"
> +require conf/machine/include/arm/arch-armv6m.inc
> +
> +TUNEVALID[cortexm0-plus] = "Enable Cortex-M0 Plus specific processor
> optimizations"
> +TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'cortexm0-plus', '
> -mcpu=cortex-m0plus', '', d)}"
> +AVAILTUNES += "cortexm0-plus"
> +
> +ARMPKGARCH_tune-cortexm0-plus = "cortexm0-plus"
> +TUNE_FEATURES_tune-cortexm0-plus = "${TUNE_FEATURES_tune-armv6m}
> cortexm0-plus"
> +
> +PACKAGE_EXTRA_ARCHS_tune-cortexm0-plus = "${PACKAGE_EXTRA_ARCHS_tune-armv6m}
> cortexm0-plus"
> --
> 2.20.1
>
>
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