[PATCH v4 5/6] ARM: vexpress: DT-based support for Cortex-A5 and Cortex-A9 based tiles
Dave Martin
dave.martin at linaro.org
Wed Dec 7 10:08:11 EST 2011
On Tue, Dec 06, 2011 at 03:43:48PM +0000, Pawel Moll wrote:
[...]
> +/include/ "vexpress-v2m.dtsi"
> diff --git a/arch/arm/mach-vexpress/Kconfig b/arch/arm/mach-vexpress/Kconfig
> index 56a61fb..c1cd08d 100644
> --- a/arch/arm/mach-vexpress/Kconfig
> +++ b/arch/arm/mach-vexpress/Kconfig
> @@ -1,13 +1,23 @@
> menu "Versatile Express platform type"
> depends on ARCH_VEXPRESS
>
> -config ARCH_VEXPRESS_CA9X4
> - bool "Versatile Express Cortex-A9x4 tile"
> - select CPU_V7
> - select ARM_GIC
> +config ARCH_VEXPRESS_CORTEX_A5_A9
> + bool
> select ARM_ERRATA_720789
> select ARM_ERRATA_751472
> - select ARM_ERRATA_753970
> + select ARM_GIC
> + select CPU_V7
> + select HAVE_L2X0_L2CC
> + select PL310_ERRATA_753970 if CACHE_PL310
> + help
> + Provides common dependencies for Versatile Express platforms
> + based on Cortex-A5 and Cortex-A9 processors. In order to
> + build a working kernel, you must also enable relevant core
> + tile support or Flattened Device Tree based support options.
> +
> +config ARCH_VEXPRESS_CA9X4
> + bool "Versatile Express Cortex-A9x4 tile"
> + select ARCH_VEXPRESS_CORTEX_A5_A9
>
> config ARCH_VEXPRESS_DT
> bool "Device Tree support for Versatile Express platforms"
> @@ -21,4 +31,23 @@ config ARCH_VEXPRESS_DT
> If your bootloader supports Flattened Device Tree based booting,
> say Y here.
>
> +config ARCH_VEXPRESS_DT_CORTEX_A5_A9
> + bool "Support for tiles based on Cortex-A5 and Cortex-A9 processors"
> + depends on ARCH_VEXPRESS_DT
> + select ARCH_VEXPRESS_CORTEX_A5_A9
> + help
> + This option enables support for systems using Cortex-A5 and Cortex-A9
> + ARM core and logic (FPGA) tiles on the Versatile Express motherboard,
> + for example:
> +
> + - CoreTile Express A5x2 (V2P-CA5s)
> + - CoreTile Express A9x4 (V2P-CA9)
> + - LogicTile Express 13MG (V2F-2XV6) with A5 SMM (Soft Macrocell Model)
> + - LogicTile Express 13MG (V2F-2XV6) with A9 SMM (Soft Macrocell Model)
> + - VE Cortex-A9 RTSM (Model)
> +
> + You must boot using a Flattened Device Tree in order to use these
> + platforms. The traditional (ATAGs) boot method is not usable on
> + these boards with this option.
> +
Because of the way these options are renamed and the backwards
dependency of CONFIG_SMP in arch/arm/Kconfig, it now seems to be
impossible to build an SMP kernel with this series.
I will propose a patch similar to HAVE_L2X0_L2CC to see if this
dependency can be factorised, but in the meantime, I suggest to fix
the dependencies in arch/arm/Kconfig.
Cheers
---Dave
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