Subject: [Suggestion] ARM:S5pv210: compiling issue for s5pv210 by using randconfig

From: [email-masked] (Chen Gang)
Date: Wed, 17 Apr 2013 18:17:32 +0800

On 2013?04?17? 18:02, Russell King - ARM Linux wrote:
> On Wed, Apr 17, 2013 at 05:25:34PM +0800, Chen Gang wrote:
>> > CONFIG_CPU_ARM7TDMI=y
>> > CONFIG_CPU_ARM9TDMI=y
>> > CONFIG_CPU_V7=y
>> > CONFIG_CPU_32v4T=y
>> > CONFIG_CPU_32v6K=y
>> > CONFIG_CPU_32v7=y
> This is an invalid configuration.  A single kernel can not support ARMv7
> and ARMv4T simultaneously.
> 
> The problem is caused by MMU=n, which exposes the CPU_ARM7TDMI and
> CPU_ARM9TDMI options, which in turn select 32v4T.  This is in turn
> caused by the incomplete integration of uclinux.
> 
> I think the only thing which can be done is to remove the ARM9TDMI
> support code, which doesn't seem to be used by anything, and adjust
> ARM7TDMI so that it isn't visible, but is selected by ARCH_AT91X40
> (which seems to be its only user.)
> 
> Here's the slightly smaller version of that:
> 

  thank you very much for your analysing.

  should I do something for it next ?
    (at least, I should learn the information both of yours)
    is it suitable to integrate the patch below to next-* tree ?
      if it it suitable, need I do something for it ?

  thanks.

  :-)

> diff --git a/arch/arm/mach-at91/Kconfig.non_dt b/arch/arm/mach-at91/Kconfig.non_dt
> index 6c24985..dc972e1 100644
> --- a/arch/arm/mach-at91/Kconfig.non_dt
> +++ b/arch/arm/mach-at91/Kconfig.non_dt
> @@ -47,6 +47,7 @@ config ARCH_AT91X40
>  	select ARCH_USES_GETTIMEOFFSET
>  	select MULTI_IRQ_HANDLER
>  	select SPARSE_IRQ
> +	select CPU_ARM7TDMI
>  
>  endchoice
>  
> diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
> index cb812a1..deb6c6a 100644
> --- a/arch/arm/mm/Kconfig
> +++ b/arch/arm/mm/Kconfig
> @@ -6,7 +6,7 @@ comment "Processor Type"
>  
>  # ARM7TDMI
>  config CPU_ARM7TDMI
> -	bool "Support ARM7TDMI processor"
> +	bool
>  	depends on !MMU
>  	select CPU_32v4T
>  	select CPU_ABRT_LV4T
> @@ -56,7 +56,7 @@ config CPU_ARM740T
>  
>  # ARM9TDMI
>  config CPU_ARM9TDMI
> -	bool "Support ARM9TDMI processor"
> +	bool
>  	depends on !MMU
>  	select CPU_32v4T
>  	select CPU_ABRT_NOMMU
> 
> 
> 

-- 
Chen Gang

Asianux Corporation