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authorAneesh V <aneesh@ti.com>2012-02-16 03:40:15 +0000
committerAlbert ARIBAUD <albert.u.boot@aribaud.net>2012-02-27 21:19:25 +0100
commitf1f2c3ca9f837985cc1f4bc3821ac1763430cdcf (patch)
tree53e64e96d5547d90fef5971855c35e694e499908 /arch/arm/cpu
parentc21052b9947b0376db094f6143b8d584bdcc287d (diff)
armv7: omap3: leave outer cache enabled
Mainline kernel for OMAP3 doesn't enable L2 cache It expects L2$ to be enabled by ROM-code/bootloader. Leaving L2$ enabled can be troublesome in cases where the L2 cache is not under CP15 control, such as in Cortex-A9. This problem is explained in detail in the commit dc7100f4080952798413fb63bb4134b22c57623a However, this problem doesn't apply to Cortex-A8 because L2$ in Cortex-A8 is under CP15 control and hence the generic armv7 maintenance opertions work for it. As such we can make an exception for OMAP3 and leave the L2$ enabled when we jump to kernel. This is done by removing the strongly-linked implementation of v7_outer_cache_disable() and allowing it to fall back to the weakly linked implementation that doesn't do anything. Signed-off-by: Aneesh V <aneesh@ti.com>
Diffstat (limited to 'arch/arm/cpu')
-rw-r--r--arch/arm/cpu/armv7/omap3/board.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/cpu/armv7/omap3/board.c b/arch/arm/cpu/armv7/omap3/board.c
index 637ab7b6bf..aabc651413 100644
--- a/arch/arm/cpu/armv7/omap3/board.c
+++ b/arch/arm/cpu/armv7/omap3/board.c
@@ -430,7 +430,7 @@ void v7_outer_cache_enable(void)
omap3_update_aux_cr(0x2, 0);
}
-void v7_outer_cache_disable(void)
+void omap3_outer_cache_disable(void)
{
/* Clear L2EN */
omap3_update_aux_cr_secure(0, 0x2);