The machine_kexec() calls outer_disable which can crash on OMAP4
becasue of trustzone restrictions.
This patch overrides the default l2x0_disable with a OMAP4
specific implementation taking care of trustzone
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@xxxxxx>
---
arch/arm/mach-omap2/omap4-common.c | 13 +++++++++++++
1 files changed, 13 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-omap2/omap4-common.c b/arch/arm/mach-omap2/omap4-common.c
index 13dc979..b557cc2 100644
--- a/arch/arm/mach-omap2/omap4-common.c
+++ b/arch/arm/mach-omap2/omap4-common.c
@@ -44,6 +44,13 @@ void __init gic_init_irq(void)
}
#ifdef CONFIG_CACHE_L2X0
+
+static void omap4_l2x0_disable(void)
+{
+ /* Disable PL310 L2 Cache controller */
+ omap_smc1(0x102, 0x0);
+}
+
static int __init omap_l2_cache_init(void)
{
/*
@@ -66,6 +73,12 @@ static int __init omap_l2_cache_init(void)
*/
l2x0_init(l2cache_base, 0x0e050000, 0xc0000fff);
+ /*
+ * Override default outer_cache.disable with a OMAP4
+ * specific one
+ */
+ outer_cache.disable = omap4_l2x0_disable;
+
return 0;
}
early_initcall(omap_l2_cache_init);
--
1.6.0.4
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