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authorSrikant Patnaik2015-01-11 12:28:04 +0530
committerSrikant Patnaik2015-01-11 12:28:04 +0530
commit871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch)
tree8718f573808810c2a1e8cb8fb6ac469093ca2784 /arch/arm/mach-ux500/cache-l2x0.c
parent9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff)
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure.
Diffstat (limited to 'arch/arm/mach-ux500/cache-l2x0.c')
-rw-r--r--arch/arm/mach-ux500/cache-l2x0.c66
1 files changed, 66 insertions, 0 deletions
diff --git a/arch/arm/mach-ux500/cache-l2x0.c b/arch/arm/mach-ux500/cache-l2x0.c
new file mode 100644
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--- /dev/null
+++ b/arch/arm/mach-ux500/cache-l2x0.c
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) ST-Ericsson SA 2011
+ *
+ * License terms: GNU General Public License (GPL) version 2
+ */
+
+#include <linux/io.h>
+#include <linux/of.h>
+
+#include <asm/cacheflush.h>
+#include <asm/hardware/cache-l2x0.h>
+#include <mach/hardware.h>
+#include <mach/id.h>
+
+static void __iomem *l2x0_base;
+
+static int __init ux500_l2x0_unlock(void)
+{
+ int i;
+
+ /*
+ * Unlock Data and Instruction Lock if locked. Ux500 U-Boot versions
+ * apparently locks both caches before jumping to the kernel. The
+ * l2x0 core will not touch the unlock registers if the l2x0 is
+ * already enabled, so we do it right here instead. The PL310 has
+ * 8 sets of registers, one per possible CPU.
+ */
+ for (i = 0; i < 8; i++) {
+ writel_relaxed(0x0, l2x0_base + L2X0_LOCKDOWN_WAY_D_BASE +
+ i * L2X0_LOCKDOWN_STRIDE);
+ writel_relaxed(0x0, l2x0_base + L2X0_LOCKDOWN_WAY_I_BASE +
+ i * L2X0_LOCKDOWN_STRIDE);
+ }
+ return 0;
+}
+
+static int __init ux500_l2x0_init(void)
+{
+ if (cpu_is_u5500())
+ l2x0_base = __io_address(U5500_L2CC_BASE);
+ else if (cpu_is_u8500())
+ l2x0_base = __io_address(U8500_L2CC_BASE);
+ else
+ ux500_unknown_soc();
+
+ /* Unlock before init */
+ ux500_l2x0_unlock();
+
+ /* 64KB way size, 8 way associativity, force WA */
+ if (of_have_populated_dt())
+ l2x0_of_init(0x3e060000, 0xc0000fff);
+ else
+ l2x0_init(l2x0_base, 0x3e060000, 0xc0000fff);
+
+ /*
+ * We can't disable l2 as we are in non secure mode, currently
+ * this seems be called only during kexec path. So let's
+ * override outer.disable with nasty assignment until we have
+ * some SMI service available.
+ */
+ outer_cache.disable = NULL;
+
+ return 0;
+}
+
+early_initcall(ux500_l2x0_init);