1 files changed, 60 insertions, 0 deletions
diff --git a/arch/arm/mach-mmp/common.c b/arch/arm/mach-mmp/common.c
new file mode 100644
index 0000000000..b3c1a248db
--- /dev/null
+++ b/arch/arm/mach-mmp/common.c
@@ -0,0 +1,60 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ *  linux/arch/arm/mach-mmp/common.c
+ *
+ *  Code common to PXA168 processor lines
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+
+#include <asm/page.h>
+#include <asm/mach/map.h>
+#include <asm/system_misc.h>
+#include "addr-map.h"
+#include <linux/soc/mmp/cputype.h>
+
+#include "common.h"
+
+#define MMP_CHIPID	CIU_REG(0x00)
+
+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	= (unsigned long)APB_VIRT_BASE,
+		.length		= APB_PHYS_SIZE,
+		.type		= MT_DEVICE,
+	}, {
+		.pfn		= __phys_to_pfn(AXI_PHYS_BASE),
+		.virtual	= (unsigned long)AXI_VIRT_BASE,
+		.length		= AXI_PHYS_SIZE,
+		.type		= MT_DEVICE,
+	},
+};
+
+static struct map_desc mmp2_io_desc[] __initdata = {
+	{
+		.pfn		= __phys_to_pfn(PGU_PHYS_BASE),
+		.virtual	= (unsigned long)PGU_VIRT_BASE,
+		.length		= PGU_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);
+}
+
+void __init mmp2_map_io(void)
+{
+	mmp_map_io();
+	iotable_init(mmp2_io_desc, ARRAY_SIZE(mmp2_io_desc));
+}