Re: [PATCH] ARM: Kconfig: improve ARM_SINGLE_ARMV7M description with Cortex M7

[Giulio Benetti]

Hi Vladimir,

On 03/12/21 10:30, Vladimir Murzin wrote:
> On 12/2/21 10:20 PM, Giulio Benetti wrote:
> > ARM_SINGLE_ARMV7M implies Arm Cortex M7 too, so let's add it to
> > description with M0/M3/M4.
>
> Well it also implies M33 and M55. I'd suggest drop specific implementations
> from description - so we do not need to update it each time new compatible
> core is released. To account newest cores like M33 and M55 you can rephrase
> to:
> - ARMv7-M/v8-M

This ^^^ is ok for me. Also, I don't see any M0 used at the moment so no 
ARMv6-M makes sense, if any in the future we can update. I see M3,M4,M7 
for the moment, so ARMv7-M. But at the moment no ARMv8-M, or am I wrong?
Maybe it would be better to add ARMv8-M when there will really be the 
support, considering also that ARM_SINGLE_ARMV7M is a bit ambiguous to 
be used with ARMv8-M. So maybe that could be modified too when an 
ARMv8-M is added.

What do you think about this?

Best regards
--
Giulio Benetti
Benetti Engineering sas

> - ARMv7-M and above
>
> Cheers
> Vladimir
>
> > Signed-off-by: Giulio Benetti <giulio.benetti@xxxxxxxxxxxxxxxxxxxxxx>
> > ---
> >   arch/arm/Kconfig | 2 +-
> >   1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
> > index c2724d986fa0..67efbde70e34 100644
> > --- a/arch/arm/Kconfig
> > +++ b/arch/arm/Kconfig
> > @@ -329,7 +329,7 @@ config ARCH_MULTIPLATFORM
> >   	select USE_OF
> >   
> >   config ARM_SINGLE_ARMV7M
> > -	bool "ARMv7-M based platforms (Cortex-M0/M3/M4)"
> > +	bool "ARMv7-M based platforms (Cortex-M0/M3/M4/M7)"
> >   	depends on !MMU
> >   	select ARM_NVIC
> >   	select AUTO_ZRELADDR