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Diffstat (limited to 'arch/arm/mm/cache-tauros2.c')
-rw-r--r--arch/arm/mm/cache-tauros2.c32
1 files changed, 18 insertions, 14 deletions
diff --git a/arch/arm/mm/cache-tauros2.c b/arch/arm/mm/cache-tauros2.c
index 1e373d268..88255bea6 100644
--- a/arch/arm/mm/cache-tauros2.c
+++ b/arch/arm/mm/cache-tauros2.c
@@ -22,6 +22,11 @@
#include <asm/cputype.h>
#include <asm/hardware/cache-tauros2.h>
+/* CP15 PJ4 Control configuration register */
+#define CCR_L2C_PREFETCH_DISABLE BIT(24)
+#define CCR_L2C_ECC_ENABLE BIT(23)
+#define CCR_L2C_WAY7_4_DISABLE BIT(21)
+#define CCR_L2C_BURST8_ENABLE BIT(20)
/*
* When Tauros2 is used on a CPU that supports the v7 hierarchical
@@ -182,18 +187,18 @@ static void enable_extra_feature(unsigned int features)
u = read_extra_features();
if (features & CACHE_TAUROS2_PREFETCH_ON)
- u &= ~0x01000000;
+ u &= ~CCR_L2C_PREFETCH_DISABLE;
else
- u |= 0x01000000;
+ u |= CCR_L2C_PREFETCH_DISABLE;
pr_info("Tauros2: %s L2 prefetch.\n",
(features & CACHE_TAUROS2_PREFETCH_ON)
? "Enabling" : "Disabling");
if (features & CACHE_TAUROS2_LINEFILL_BURST8)
- u |= 0x00100000;
+ u |= CCR_L2C_BURST8_ENABLE;
else
- u &= ~0x00100000;
- pr_info("Tauros2: %s line fill burt8.\n",
+ u &= ~CCR_L2C_BURST8_ENABLE;
+ pr_info("Tauros2: %s burst8 line fill.\n",
(features & CACHE_TAUROS2_LINEFILL_BURST8)
? "Enabling" : "Disabling");
@@ -287,16 +292,15 @@ void __init tauros2_init(unsigned int features)
node = of_find_matching_node(NULL, tauros2_ids);
if (!node) {
pr_info("Not found marvell,tauros2-cache, disable it\n");
- return;
+ } else {
+ ret = of_property_read_u32(node, "marvell,tauros2-cache-features", &f);
+ if (ret) {
+ pr_info("Not found marvell,tauros-cache-features property, "
+ "disable extra features\n");
+ features = 0;
+ } else
+ features = f;
}
-
- ret = of_property_read_u32(node, "marvell,tauros2-cache-features", &f);
- if (ret) {
- pr_info("Not found marvell,tauros-cache-features property, "
- "disable extra features\n");
- features = 0;
- } else
- features = f;
#endif
tauros2_internal_init(features);
}