On Tue, Aug 18, 2020 at 2:38 PM Khem Raj <[email protected]> wrote:
>
> 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 ?
>
I guess we don't actually. I see it's only set for the 64 bit arm
tuning files. I'll remove it.
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