1 files changed, 51 insertions, 0 deletions

diff --git a/arch/arm/mach-davinci/io.c b/arch/arm/mach-davinci/io.c
new file mode 100644
index 000000000000..87fae6fb6ecf
--- /dev/null
+++ b/arch/arm/mach-davinci/io.c
@@ -0,0 +1,51 @@
+/*
+ * DaVinci I/O mapping code
+ *
+ * Copyright (C) 2005-2006 Texas Instruments
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+
+#include <asm/tlb.h>
+#include <asm/io.h>
+#include <asm/memory.h>
+
+#include <asm/mach/map.h>
+
+extern void davinci_check_revision(void);
+
+/*
+ * The machine specific code may provide the extra mapping besides the
+ * default mapping provided here.
+ */
+static struct map_desc davinci_io_desc[] __initdata = {
+        {
+                .virtual        = IO_VIRT,
+                .pfn            = __phys_to_pfn(IO_PHYS),
+                .length         = IO_SIZE,
+                .type           = MT_DEVICE
+        },
+};
+
+void __init davinci_map_common_io(void)
+{
+        iotable_init(davinci_io_desc, ARRAY_SIZE(davinci_io_desc));
+
+        /* Normally devicemaps_init() would flush caches and tlb after
+         * mdesc->map_io(), but we must also do it here because of the CPU
+         * revision check below.
+         */
+        local_flush_tlb_all();
+        flush_cache_all();
+
+        /* We want to check CPU revision early for cpu_is_xxxx() macros.
+         * IO space mapping must be initialized before we can do that.
+         */
+        davinci_check_revision();
+}