linux-kernel - Re: [PATCH] ARM: mutually exclude ZBOOT_ROM and AUTO

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Date:	Fri, 14 Oct 2011 14:04:50 -0400 (EDT)
From:	Nicolas Pitre <nico@...xnic.net>
To:	Olof Johansson <olof@...om.net>
Cc:	Russell King - ARM Linux <linux@....linux.org.uk>,
	linux-arm-kernel@...ts.infradead.org, linux-tegra@...r.kernel.org,
	linux-kernel@...r.kernel.org, ccross@...roid.com, arnd@...db.de,
	swarren@...dia.com, pdeschrijver@...dia.com
Subject: Re: [PATCH] ARM: mutually exclude ZBOOT_ROM and AUTO_ZRELADDR

On Fri, 14 Oct 2011, Olof Johansson wrote:

> This way platforms that want it can select AUTO_ZRELADDR without issues caused by
> someone manually also enabling ZBOOT_ROM.
> 
> Signed-off-by: Olof Johansson <olof@...om.net>

Acked-by: Nicolas Pitre <nicolas.pitre@...aro.org>

Certainly harmless for the time being.



> ---
>  arch/arm/Kconfig |    1 +
>  1 files changed, 1 insertions(+), 0 deletions(-)
> 
> 
> Russell King wrote at Friday, October 14, 2011 1:15 AM:
> 
> > I'll point out that this makes Tegra incompatible with ZBOOT_ROM, which
> > can still be enabled.  ZBOOT_ROM=y AUTO_ZRELADDR=y is an invalid
> > configuration at runtime.
> 
> Ah, looks like the dependency is only one-way. Since they are mutually
> exclusive, how about the below?
> 
> 
> diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
> index 82973b2..2ad58e8 100644
> --- a/arch/arm/Kconfig
> +++ b/arch/arm/Kconfig
> @@ -1814,6 +1814,7 @@ config ZBOOT_ROM_BSS
>  config ZBOOT_ROM
>  	bool "Compressed boot loader in ROM/flash"
>  	depends on ZBOOT_ROM_TEXT != ZBOOT_ROM_BSS
> +	depends on !AUTO_ZRELADDR
>  	help
>  	  Say Y here if you intend to execute your compressed kernel image
>  	  (zImage) directly from ROM or flash.  If unsure, say N.
> -- 
> 1.7.4.1
> 
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