[PATCH 2/2] ARM: allow for ATAGS to be configured out when DT support is selected
arnd at arndb.de
Sat Sep 1 16:25:27 EDT 2012
On Thursday 30 August 2012, Nicolas Pitre wrote:
> Now that ATAGS support is well contained, we can easily remove it from
> the kernel build if so desired. It has to explicitly be disabled, and
> only when DT support is selected.
> Note: disabling kernel ATAGS support does not prevent the usage of
> +config ATAGS
> + bool "Support for the traditional ATAGS boot data passing" if USE_OF
> + default y
> + help
> + This is the traditional way of passing data to the kernel at boot
> + time. If you are solely relying on the flattened device tree (or
> + the ARM_ATAG_DTB_COMPAT option) then you may unselect this option
> + to remove ATAGS support from your kernel binary. If unsure,
> + leave this to y.
That's a clever way of implementing it, I had not though of making it an
optional default-y symbol.
Acked-by: Arnd Bergmann <arnd at arndb.de>
Should we do patches to the individual platforms bsaed on this to disable
the ATAG based board files when CONFIG_ATAG is disabled?
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