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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2009-03-28 20:29:51 +0000
committerRussell King <rmk+kernel@arm.linux.org.uk>2009-03-28 20:29:51 +0000
commited40d0c472b136682b2fcba05f89762859c7374f (patch)
tree076b83a26bcd63d6158463735dd34c10bbc591dc /arch/sh/mm/pmb-fixed.c
parent9e495834e59ca9b29f1a1f63b9f5533bb022ac49 (diff)
parent5d80f8e5a9dc9c9a94d4aeaa567e219a808b8a4a (diff)
Merge branch 'origin' into devel
Conflicts: sound/soc/pxa/pxa2xx-i2s.c
Diffstat (limited to 'arch/sh/mm/pmb-fixed.c')
-rw-r--r--arch/sh/mm/pmb-fixed.c45
1 files changed, 45 insertions, 0 deletions
diff --git a/arch/sh/mm/pmb-fixed.c b/arch/sh/mm/pmb-fixed.c
new file mode 100644
index 00000000000..43c8eac4d8a
--- /dev/null
+++ b/arch/sh/mm/pmb-fixed.c
@@ -0,0 +1,45 @@
+/*
+ * arch/sh/mm/fixed_pmb.c
+ *
+ * Copyright (C) 2009 Renesas Solutions Corp.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/io.h>
+#include <asm/mmu.h>
+#include <asm/mmu_context.h>
+
+static int __uses_jump_to_uncached fixed_pmb_init(void)
+{
+ int i;
+ unsigned long addr, data;
+
+ jump_to_uncached();
+
+ for (i = 0; i < PMB_ENTRY_MAX; i++) {
+ addr = PMB_DATA + (i << PMB_E_SHIFT);
+ data = ctrl_inl(addr);
+ if (!(data & PMB_V))
+ continue;
+
+ if (data & PMB_C) {
+#if defined(CONFIG_CACHE_WRITETHROUGH)
+ data |= PMB_WT;
+#elif defined(CONFIG_CACHE_WRITEBACK)
+ data &= ~PMB_WT;
+#else
+ data &= ~(PMB_C | PMB_WT);
+#endif
+ }
+ ctrl_outl(data, addr);
+ }
+
+ back_to_cached();
+
+ return 0;
+}
+arch_initcall(fixed_pmb_init);