Re: [Xen-devel] [PATCH v7 08/12] arm: add ALL, QEMU, Rcar3 and MPSoC configs

[Julien Grall <julien.grall@xxxxxxx>]

Hi,

On 27/07/18 12:21, Andrii Anisov wrote:
> I would suggest something like:
>
> diff --git a/xen/arch/arm/Kconfig b/xen/arch/arm/Kconfig
> index 06ba4a4..794f06e 100644
> --- a/xen/arch/arm/Kconfig
> +++ b/xen/arch/arm/Kconfig
> @@ -218,6 +218,8 @@ config ARM64_HARDEN_BRANCH_PREDICTOR
>   config ARM32_HARDEN_BRANCH_PREDICTOR
>       def_bool y if ARM_32 && HARDEN_BRANCH_PREDICTOR
>
> +source "arch/arm/platforms/Kconfig"
> +
There are no need for duplication. You can instead do something like:

config ALL_64
    default (ALL && ARM_64)

config ALL_32
    default (ALL && ARM_32)

config MPSOC_PLATFORM
    bool
    default (ALL_64 || MPSOC)

Cheers,

>   source "common/Kconfig"
>
>   source "drivers/Kconfig"
> diff --git a/xen/arch/arm/platforms/Kconfig 
> b/xen/arch/arm/platforms/Kconfig
> new file mode 100644
> index 0000000..badf17b
> --- /dev/null
> +++ b/xen/arch/arm/platforms/Kconfig
> @@ -0,0 +1,72 @@
> +choice
> +    prompt "Platform Support"
> +    depends on ARM_32
> +    default ALL_32
> +    ---help---
> +    Choose which hardware platform to enable in Xen.
> +
> +    If unsure, choose ALL.
> +
> +config ALL_32
> +    bool "All Platforms"
> +    ---help---
> +    Enable support for all available hardware platforms. It doesn't
> +    automatically select any of the related drivers.
> +
> +config NONE_32
> +    bool "No Platform support"
> +    ---help---
> +    Remove all platform code. > +
> +endchoice
> +
> +choice
> +    prompt "Platform Support"
> +    depends on ARM_64
> +    default ALL_64
> +    ---help---
> +    Choose which hardware platform to enable in Xen.
> +
> +    If unsure, choose ALL.
> +
> +config ALL_64
> +    bool "All Platforms"
> +    select MPSOC_PLATFORM
> +    ---help---
> +    Enable support for all available hardware platforms. It doesn't
> +    automatically select any of the related drivers.
> +
> +config QEMU
> +    bool "QEMU aarch virt machine support"
> +    depends on ARM_64
> +    select GICV3
> +    select HAS_PL011
> +    ---help---
> +    Enable all the required drivers for QEMU aarch64 virt emulated
> +    machine.
> +
> +config RCAR3
> +    bool "Renesas RCar3 support"
> +    depends on ARM_64
> +    select HAS_SCIF
> +    ---help---
> +    Enable all the required drivers for Renesas RCar3
> +
> +config MPSOC
> +    bool "Xilinx Ultrascale+ MPSoC support"
> +    depends on ARM_64
> +    select MPSOC_PLATFORM
> +    select HAS_CADENCE_UART
> +    select ARM_SMMU
> +    ---help---
> +    Enable all the required drivers for Xilinx Ultrascale+ MPSoC
> +
> +config NONE_64
> +    bool "No Platform support"
> +    ---help---
> +    Remove all platform code.
> +
> +endchoice
> +
> +config MPSOC_PLATFORM
> +    bool
> diff --git a/xen/arch/arm/platforms/Makefile 
> b/xen/arch/arm/platforms/Makefile
> index 80e555c..c8e763e 100644
> --- a/xen/arch/arm/platforms/Makefile
> +++ b/xen/arch/arm/platforms/Makefile
> @@ -1,11 +1,14 @@
> -obj-y += vexpress.o
> -obj-$(CONFIG_ARM_32) += brcm.o
> -obj-$(CONFIG_ARM_32) += exynos5.o
> -obj-$(CONFIG_ARM_32) += midway.o
> -obj-$(CONFIG_ARM_32) += omap5.o
> -obj-$(CONFIG_ARM_32) += rcar2.o
> -obj-$(CONFIG_ARM_64) += seattle.o
> -obj-y += sunxi.o
> -obj-$(CONFIG_ARM_64) += thunderx.o
> -obj-$(CONFIG_ARM_64) += xgene-storm.o
> -obj-$(CONFIG_ARM_64) += xilinx-zynqmp.o
> +obj-$(CONFIG_ALL_32) += vexpress.o
> +obj-$(CONFIG_ALL_32) += sunxi.o
> +obj-$(CONFIG_ALL_32) += brcm.o
> +obj-$(CONFIG_ALL_32) += exynos5.o
> +obj-$(CONFIG_ALL_32) += midway.o
> +obj-$(CONFIG_ALL_32) += omap5.o
> +obj-$(CONFIG_ALL_32) += rcar2.o
> +
> +obj-$(CONFIG_ALL_64) += vexpress.o
> +obj-$(CONFIG_ALL_64) += sunxi.o
> +obj-$(CONFIG_ALL_64) += seattle.o
> +obj-$(CONFIG_ALL_64) += thunderx.o
> +obj-$(CONFIG_ALL_64) += xgene-storm.o
> +obj-$(CONFIG_MPSOC_PLATFORM)  += xilinx-zynqmp.o
--
Julien Grall

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