initial_commit

1 files changed, 47 insertions, 0 deletions

diff --git a/arch/arm/mach-mmp/common.c b/arch/arm/mach-mmp/common.c
new file mode 100644
index 00000000..0ec0ca80
--- /dev/null
+++ b/arch/arm/mach-mmp/common.c
@@ -0,0 +1,47 @@
+/*
+ *  linux/arch/arm/mach-mmp/common.c
+ *
+ *  Code common to PXA168 processor lines
+ *
+ * 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/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+
+#include <asm/page.h>
+#include <asm/mach/map.h>
+#include <mach/addr-map.h>
+#include <mach/cputype.h>
+
+#include "common.h"
+
+#define MMP_CHIPID	(AXI_VIRT_BASE + 0x82c00)
+
+unsigned int mmp_chip_id;
+EXPORT_SYMBOL(mmp_chip_id);
+
+static struct map_desc standard_io_desc[] __initdata = {
+	{
+		.pfn		= __phys_to_pfn(APB_PHYS_BASE),
+		.virtual	= APB_VIRT_BASE,
+		.length		= APB_PHYS_SIZE,
+		.type		= MT_DEVICE,
+	}, {
+		.pfn		= __phys_to_pfn(AXI_PHYS_BASE),
+		.virtual	= AXI_VIRT_BASE,
+		.length		= AXI_PHYS_SIZE,
+		.type		= MT_DEVICE,
+	},
+};
+
+void __init mmp_map_io(void)
+{
+	iotable_init(standard_io_desc, ARRAY_SIZE(standard_io_desc));
+
+	/* this is early, initialize mmp_chip_id here */
+	mmp_chip_id = __raw_readl(MMP_CHIPID);
+}