lkml.org 
[lkml]   [2011]   [Feb]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH TIP 02/14] x86: Add device tree support
On Mon, Jan 24, 2011 at 09:58:50AM +0530, Sebastian Andrzej Siewior wrote:
> This patch adds minimal support for device tree support on x86. It will
> be passed to the kernel via setup_data which requires atleast boot
> protocol 2.09.
> Memory size, restricted memory regions, boot arguments are gathered the
> traditional way so things like cmd_line are just here to let the code
> compile.
> The current plan is use the device tree as an extension and to gather
> informations from it which can not be enumerated and have to be
> hardcoded otherwise. This includes things like
> - which devices are on this I2C/ SPI bus?
> - how are the interrupts wired to IO APIC?
> - where could my hpet be?
>
> Cc: devicetree-discuss@lists.ozlabs.org
> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
> Signed-off-by: Dirk Brandewie <dirk.brandewie@gmail.com>
> ---
[...]
> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
> index d5ed94d..5d21095 100644
> --- a/arch/x86/Kconfig
> +++ b/arch/x86/Kconfig
> @@ -297,6 +297,13 @@ config X86_BIGSMP
> ---help---
> This option is needed for the systems that have more than 8 CPUs
>
> +config X86_OF
> + bool "Support for device tree"
> + select OF
> + select OF_EARLY_FLATTREE
> + ---help---
> + Device tree support on X86.
> +

On ARM and MIPS, this is called 'config USE_OF'. It would be nice to have
some commonality. Maybe I should move the user-visible option to
drivers/of/Kconfig. Or perhaps I should just make CONFIG_OF itself
user visible.

thoughts?

g.


\
 
 \ /
  Last update: 2011-02-16 22:33    [from the cache]
©2003-2014 Jasper Spaans. hosted at Digital Ocean