On Thu, Aug 16, 2012 at 3:44 PM, Arnd Bergmann <a...@arndb.de> wrote: > On Thursday 16 August 2012, Linus Walleij wrote: >> This patch set moves all the non-DT platform code into >> #ifndef CONFIG_OF sections for clarity. The plan is to >> delete them after deprecation. > > I'm fine with your playing around with this in any way you > like, but I think in general we should have a new CONFIG_ATAG > symbol, so you can build a kernel that supports booting > both with and without DT for the same platform, depending > on what the boot loader supports. > > Then you can enclose all the non-DT sections in #ifdef > CONFIG_ATAG and we can remove them at some later stage.
Since we already have CONFIG_USE_OF I think CONFIG_USE_ATAGS is more apropriate, but I get the idea. So it begins like this: diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index e91c7cd..0764ef7 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -1907,6 +1907,12 @@ endmenu menu "Boot options" +config USE_ATAGS + bool "ATAGS support" + default y + help + Include support for ATAGS-based machine descriptions. + config USE_OF bool "Flattened Device Tree support" select OF @@ -2110,6 +2116,7 @@ config KEXEC config ATAGS_PROC bool "Export atags in procfs" + depends on USE_ATAGS depends on KEXEC default y help But then we hit #ifdeffing and compiling out a lot of dangerous stuff in arch/arm/kernel and then I get the creeps. I can try, but I think this is typical Nico territory for example... Yours, Linus Walleij _______________________________________________ devicetree-discuss mailing list devicetree-discuss@lists.ozlabs.org https://lists.ozlabs.org/listinfo/devicetree-discuss