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authorDave Martin <dave.martin@linaro.org>2011-11-29 15:56:19 +0000
committerDave Martin <dave.martin@linaro.org>2011-12-19 13:46:11 +0000
commitce5ea9f3767e8589521319cae2eb6e05c52bd056 (patch)
tree29e08e74c3ecd3a6b8a4875d3e631b17ff456fef /arch/arm/mach-vexpress
parentcaca6a03d365883564885f2c1da3e88dcf65d139 (diff)
downloadblackbird-op-linux-ce5ea9f3767e8589521319cae2eb6e05c52bd056.tar.gz
blackbird-op-linux-ce5ea9f3767e8589521319cae2eb6e05c52bd056.zip
ARM: l2x0/pl310: Refactor Kconfig to be more maintainable
Making CACHE_L2X0 depend on (huge list of MACH_ and ARCH_ configs) is bothersome to maintain and likely to lead to merge conflicts. This patch moves the knowledge of which platforms have a L2x0 or PL310 cache controller to the individual machines. To enable this, a new MIGHT_HAVE_CACHE_L2X0 config option is introduced to allow machines to indicate that they may have such a cache controller independently of each other. Boards/SoCs which cannot reliably operate without the L2 cache controller support will need to select CACHE_L2X0 directly from their own Kconfigs instead. This applies to some TrustZone-enabled boards where Linux runs in the Normal World, for example. Signed-off-by: Dave Martin <dave.martin@linaro.org> Acked-by: Anton Vorontsov <cbouatmailru@gmail.com> (for cns3xxx) Acked-by: Tony Lindgren <tony@atomide.com> (for omap) Acked-by: Shawn Guo <shawn.guo@linaro.org> (for imx) Acked-by: Kukjin Kim <kgene.kim@samsung.com> (for exynos) Acked-by: Sascha Hauer <s.hauer@pengutronix.de> (for imx) Acked-by: Olof Johansson <olof@lixom.net> (for tegra)
Diffstat (limited to 'arch/arm/mach-vexpress')
-rw-r--r--arch/arm/mach-vexpress/Kconfig1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm/mach-vexpress/Kconfig b/arch/arm/mach-vexpress/Kconfig
index 931148487f0b..a8aefc8a6f24 100644
--- a/arch/arm/mach-vexpress/Kconfig
+++ b/arch/arm/mach-vexpress/Kconfig
@@ -8,5 +8,6 @@ config ARCH_VEXPRESS_CA9X4
select ARM_ERRATA_720789
select ARM_ERRATA_751472
select ARM_ERRATA_753970
+ select MIGHT_HAVE_CACHE_L2X0
endmenu
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