[PATCH 4/4] sandbox: allow "make ARCH=sandbox allyesconfig"

[Sascha Hauer]

On Thu, Jun 26, 2014 at 10:49:17AM +0200, Holger Schurig wrote:
> Compiling the tree with allyesconfig is helpful because different
> compilers (gcc, clang) or static checkers (e.g. clang's scan-build)
> can then process and check more code.
> 
> This patch introduces two new configuration symbols that Kconfig files
> can depend on. That way, code that is only working where a cache or DMA
> implementation exists can be opted out.
> 
> Signed-off-by: Holger Schurig <holgerschurig at gmail.com>
> ---
>  common/Kconfig                   |   21 +++++++++++++++++++++
>  drivers/ata/Kconfig              |    1 +
>  drivers/input/Kconfig            |    2 +-
>  drivers/net/Kconfig              |    4 ++++
>  drivers/regulator/Kconfig        |    1 +
>  drivers/usb/host/Kconfig         |    1 +
>  drivers/video/imx-ipu-v3/Kconfig |    1 +
>  7 files changed, 30 insertions(+), 1 deletion(-)
> 
> diff --git a/common/Kconfig b/common/Kconfig
> index 1afee93..0bf5d2c 100644
> --- a/common/Kconfig
> +++ b/common/Kconfig
> @@ -25,6 +25,26 @@ config ENV_HANDLING
>  	select CRC32
>  	bool
>  
> +config HAS_CACHE
> +	bool
> +	default n if SANDBOX
> +	default y
> +	help
> +	  This allows you do run "make ARCH=sandbox allyesconfig".
> +
> +	  Drivers that depend on a cache implementation can depend on this
> +	  config, so that you don't get a compilation error.
> +
> +config HAS_DMA
> +	bool
> +	default n if SANDBOX
> +	default y
> +	help
> +	  This allows you do run "make ARCH=sandbox allyesconfig".
> +
> +	  Drivers that depend on a DMA implementation can depend on this
> +	  config, so that you don't get a compilation error.

Only ARM implements the dma_* functions. Can we skip the 'default x'
here and select HAS_DMA from the ARM Kconfig file?

Same with HAS_CACHE. The functions are implemented by ppc, nios2 and
openrisc.

Sascha

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