From mboxrd@z Thu Jan  1 00:00:00 1970
From: pawel.moll@arm.com (Pawel Moll)
Date: Wed, 11 Jul 2012 15:24:53 +0100
Subject: [PATCH 9/9] ARM: vexpress: Config option for early printk console
In-Reply-To: <4FFD8C4F.40502@arm.com>
References: <1342013791-19516-1-git-send-email-pawel.moll@arm.com>
 <1342013791-19516-10-git-send-email-pawel.moll@arm.com>
 <4FFD8C4F.40502@arm.com>
Message-ID: <1342016693.30755.6.camel@hornet>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

On Wed, 2012-07-11 at 15:23 +0100, Jonathan Austin wrote:
> Hi Pawel,
> 
> On 11/07/12 14:36, Pawel Moll wrote:
> > diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
> > index 01a1341..12eee87 100644
> > --- a/arch/arm/Kconfig.debug
> > +++ b/arch/arm/Kconfig.debug
> > @@ -310,6 +310,32 @@ choice
> >  		  The uncompressor code port configuration is now handled
> >  		  by CONFIG_S3C_LOWLEVEL_UART_PORT.
> >  
> > +	config DEBUG_VEXPRESS_UART0_DETECT
> > +		bool "Autodetect UART0 on Versatile Express Cortex-A core tiles"
> > +		depends on ARCH_VEXPRESS
> > +		help
> > +		  This option enables simple heuristic which tries to determine
> > +		  motherboard's memory map variant (original or RS1) and then
> > +		  choose relevant UART0 base address.
> > +
> > +		  Note that this will only work with standard A-class core tiles,
> > +		  and may fail with non-standard SMM or custom software model.
> > +
> 
> Is it possible to make this depend on something like CPU_CP15_MMU,
> instead of ARCH_VEXPRESS? Seems like a reasonable way to ensure that
> this isn't used on some of the core tiles that don't have the required
> cp15 registers to read the Configuration Base Address Register.

Yes, sure, I forgot about this! Sorry, will post v2 in a second.

Pawel