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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-realview
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-realview')
-rw-r--r--arch/arm/mach-realview/Kconfig5
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/arm/mach-realview/Kconfig b/arch/arm/mach-realview/Kconfig
index dba6d0c1fc17..3dd620f8dd9b 100644
--- a/arch/arm/mach-realview/Kconfig
+++ b/arch/arm/mach-realview/Kconfig
@@ -12,6 +12,7 @@ config REALVIEW_EB_A9MP
bool "Support Multicore Cortex-A9 Tile"
depends on MACH_REALVIEW_EB
select CPU_V7
+ select MIGHT_HAVE_CACHE_L2X0
help
Enable support for the Cortex-A9MPCore tile fitted to the
Realview(R) Emulation Baseboard platform.
@@ -21,6 +22,7 @@ config REALVIEW_EB_ARM11MP
depends on MACH_REALVIEW_EB
select CPU_V6K
select ARCH_HAS_BARRIERS if SMP
+ select MIGHT_HAVE_CACHE_L2X0
help
Enable support for the ARM11MPCore tile fitted to the Realview(R)
Emulation Baseboard platform.
@@ -39,6 +41,7 @@ config MACH_REALVIEW_PB11MP
select CPU_V6K
select ARM_GIC
select HAVE_PATA_PLATFORM
+ select MIGHT_HAVE_CACHE_L2X0
select ARCH_HAS_BARRIERS if SMP
help
Include support for the ARM(R) RealView(R) Platform Baseboard for
@@ -51,6 +54,7 @@ config MACH_REALVIEW_PB1176
select CPU_V6
select ARM_GIC
select HAVE_TCM
+ select MIGHT_HAVE_CACHE_L2X0
help
Include support for the ARM(R) RealView(R) Platform Baseboard for
ARM1176JZF-S.
@@ -78,6 +82,7 @@ config MACH_REALVIEW_PBX
bool "Support RealView(R) Platform Baseboard Explore"
select ARM_GIC
select HAVE_PATA_PLATFORM
+ select MIGHT_HAVE_CACHE_L2X0
select ARCH_SPARSEMEM_ENABLE if CPU_V7 && !REALVIEW_HIGH_PHYS_OFFSET
select ZONE_DMA if SPARSEMEM
help
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