Re: [Minios-devel] [UNIKRAFT PATCHv4 13/43] arch/arm: Add more CPU models to processor optimization list

[Simon Kuenzer <simon.kuenzer@xxxxxxxxx>]

Hey,

the discussion we had with patch 7/43 is going to have implications to 
this patch as well.
Thanks

Simon

On 06.07.2018 11:03, Wei Chen wrote:
> Current processor optimization list only support generic cortex-a7
> and one Allwin cortex-a7 SoC. In this patch, we add all armv7
> cortex-a series and two armv8 32-bit CPU to support list.
>
> As arm64 and x86_64, we also add auto-detect host CPU option for arm32,
> even it's not likely to be used on arm32 platforms.
>
> New supported armv7 cortex-a CPU models:
> armv7-a,native
> armv7-a,generic-armv7-a
> armv7-a,cortex-a8
> armv7-a,cortex-a9
> armv7-a,cortex-a5
> armv7-a,cortex-a15
> armv7-a,cortex-a7
> armv7-a,cortex-a12
> armv7-a,cortex-a17
> armv8-a,cortex-a32(full backward compatibility with Armv7)
> armv8-a,cortex-a35(full backward compatibility with Armv7)
>
> The generic-armv7-a would be our default option of armv7 processor.
>
> Signed-off-by: Wei Chen <Wei.Chen@xxxxxxx>
> ---
>   arch/arm/arm/Makefile.uk | 56 +++++++++++++++++++++++++++++++++++++---
>   1 file changed, 53 insertions(+), 3 deletions(-)
>
> diff --git a/arch/arm/arm/Makefile.uk b/arch/arm/arm/Makefile.uk
> index a187946..7a8eb68 100644
> --- a/arch/arm/arm/Makefile.uk
> +++ b/arch/arm/arm/Makefile.uk
> @@ -5,14 +5,64 @@ CFLAGS   += -marm -fms-extensions
>   CXXFLAGS += -D__ARM_32__
>   CXXFLAGS += -marm -fms-extensions
>   
> +# Set GCC flags for MARCH_ARM32_NATIVE. GCC supports -mcpu=native from 4.7
> +ifeq ($(CONFIG_MARCH_ARM32_NATIVE),y)
> +$(eval $(call set_flags_if_gcc_version_ge,4,7,-mcpu=native -mtune=native))
> +endif
> +
> +# Set GCC flags for MARCH_ARM32_GENERICV7. GCC supports -mtune=generic-armv7-a 
> from 4.7
> +ifeq ($(CONFIG_MARCH_ARM32_GENERICV7),y)
> +$(eval $(call set_flags_if_gcc_version_ge,4,7,-march=armv7-a 
> -mtune=generic-armv7-a))
> +endif
> +
> +# Set GCC flags for MARCH_ARM32_CORTEXA5. GCC supports -mcpu=cortex-a5 from 4.5
> +ifeq ($(CONFIG_MARCH_ARM32_CORTEXA5),y)
> +$(eval $(call set_flags_if_gcc_version_ge,4,5,-mcpu=cortex-a5 
> -mtune=cortex-a5))
> +endif
> +
> +# Set GCC flags for MARCH_ARM32_CORTEXA7. GCC supports -mcpu=cortex-a7 from 4.7
> +ifeq ($(CONFIG_MARCH_ARM32_CORTEXA7),y)
> +$(eval $(call set_flags_if_gcc_version_ge,4,7,-mcpu=cortex-a7 
> -mtune=cortex-a7))
> +endif
> +
> +# Set GCC flags for MARCH_ARM32_CORTEXA8. GCC supports -mcpu=cortex-a8 from 4.3
> +ifeq ($(CONFIG_MARCH_ARM32_CORTEXA8),y)
> +$(eval $(call set_flags_if_gcc_version_ge,4,3,-mcpu=cortex-a8 
> -mtune=cortex-a8))
> +endif
> +
> +# Set GCC flags for MARCH_ARM32_CORTEXA9. GCC supports -mcpu=cortex-a9 from 4.4
> +ifeq ($(CONFIG_MARCH_ARM32_CORTEXA9),y)
> +$(eval $(call set_flags_if_gcc_version_ge,4,4,-mcpu=cortex-a9 
> -mtune=cortex-a9))
> +endif
> +
> +# Set GCC flags for MARCH_ARM32_CORTEXA12. GCC supports -mcpu=cortex-a12 from 
> 4.9
> +ifeq ($(CONFIG_MARCH_ARM32_CORTEXA12),y)
> +$(eval $(call set_flags_if_gcc_version_ge,4,9,-mcpu=cortex-a12 
> -mtune=cortex-a12))
> +endif
> +
> +# Set GCC flags for MARCH_ARM32_CORTEXA15. GCC supports -mcpu=cortex-a15 from 
> 4.6
> +ifeq ($(CONFIG_MARCH_ARM32_CORTEXA15),y)
> +$(eval $(call set_flags_if_gcc_version_ge,4,6,-mcpu=cortex-a15 
> -mtune=cortex-a15))
> +endif
> +
> +# Set GCC flags for MARCH_ARM32_CORTEXA17. GCC supports -mcpu=cortex-a17 from 
> 6.1
> +ifeq ($(CONFIG_MARCH_ARM32_CORTEXA17),y)
> +$(eval $(call set_flags_if_gcc_version_ge,6,1,-mcpu=cortex-a17 
> -mtune=cortex-a17))
> +endif
> +
>   # Set GCC flags for MARCH_ARM32_A20NEON. GCC supports -mcpu=cortex-a7 from 4.7
>   ifeq ($(CONFIG_MARCH_ARM32_A20NEON),y)
>   $(eval $(call set_flags_if_gcc_version_ge,4,7,-mcpu=cortex-a7 
> -mtune=cortex-a7 -mfpu=vfpv4-d16 -mfpu=neon-vfpv4 -funsafe-math-optimizations))
>   endif
>   
> -# Set GCC flags for MARCH_ARM32_CORTEXA7. GCC supports -mcpu=cortex-a7 from 4.7
> -ifeq ($(CONFIG_MARCH_ARM32_CORTEXA7),y)
> -$(eval $(call set_flags_for_valid_gcc,4,7,-mcpu=cortex-a7 -mtune=cortex-a7))
> +# Set GCC flags for MARCH_ARM32_CORTEXA32. GCC supports -mcpu=cortex-a32 from 
> 6.1
> +ifeq ($(CONFIG_MARCH_ARM32_CORTEXA32),y)
> +$(eval $(call set_flags_if_gcc_version_ge,6,1,-mcpu=cortex-a32 
> -mtune=cortex-a32))
> +endif
> +
> +# Set GCC flags for MARCH_ARM32_CORTEXA35. GCC supports -mcpu=cortex-a35 from 
> 6.1
> +ifeq ($(CONFIG_MARCH_ARM32_CORTEXA35),y)
> +$(eval $(call set_flags_if_gcc_version_ge,6,1,-mcpu=cortex-a35 
> -mtune=cortex-a35))
>   endif
>   
>   $(eval $(call addlib,libarmmath))
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