From: dave.martin@linaro.org (Dave Martin)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v4 3/5] omap4: Unconditionally require l2x0 L2 cache controller support
Date: Tue, 13 Dec 2011 17:56:31 +0000 [thread overview]
Message-ID: <1323798993-8727-4-git-send-email-dave.martin@linaro.org> (raw)
In-Reply-To: <1323798993-8727-1-git-send-email-dave.martin@linaro.org>
If running in the Normal World on a TrustZone-enabled SoC, Linux
does not have complete control over the L2 cache controller
configuration. The kernel cannot work reliably on such platforms
without the l2x0 cache support code built in.
This patch unconditionally enables l2x0 support for the OMAP4 SoCs.
Thanks to Rob Herring for this suggestion. [1]
Signed-off-by: Dave Martin <dave.martin@linaro.org>
[1] http://lists.infradead.org/pipermail/linux-arm-kernel/2011-November/074495.html
---
arch/arm/mach-omap2/Kconfig | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig
index bb1b670..94e568a 100644
--- a/arch/arm/mach-omap2/Kconfig
+++ b/arch/arm/mach-omap2/Kconfig
@@ -41,11 +41,11 @@ config ARCH_OMAP4
bool "TI OMAP4"
default y
depends on ARCH_OMAP2PLUS
+ select CACHE_L2X0
select CPU_V7
select ARM_GIC
select HAVE_SMP
select LOCAL_TIMERS if SMP
- select MIGHT_HAVE_CACHE_L2X0
select PL310_ERRATA_588369
select PL310_ERRATA_727915
select ARM_ERRATA_720789
--
1.7.4.1
next prev parent reply other threads:[~2011-12-13 17:56 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-13 17:56 [PATCH v4 0/5] Refactor common Kconfigs for easier maintenance Dave Martin
2011-12-13 17:56 ` [PATCH v4 1/5] ARM: l2x0/pl310: Refactor Kconfig to be more maintainable Dave Martin
2011-12-13 17:56 ` [PATCH v4 2/5] ARM: SMP: " Dave Martin
2011-12-13 20:11 ` David Brown
2011-12-14 11:36 ` Dave Martin
2011-12-14 17:46 ` David Brown
2011-12-14 18:20 ` Dave Martin
2011-12-14 17:31 ` Linus Walleij
2011-12-18 4:22 ` Olof Johansson
2011-12-13 17:56 ` Dave Martin [this message]
2011-12-13 17:56 ` [PATCH v4 4/5] highbank: Unconditionally require l2x0 L2 cache controller support Dave Martin
2011-12-13 17:56 ` [PATCH v4 5/5] imx6q: Remove unconditional dependency on l2x0 L2 cache support Dave Martin
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