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Eric Miao49cbe782009-01-20 14:15:18 +08001/*
2 * linux/arch/arm/mach-mmp/common.c
3 *
4 * Code common to PXA168 processor lines
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11#include <linux/init.h>
12#include <linux/kernel.h>
Haojian Zhuangf090c742010-09-21 16:43:57 +080013#include <linux/module.h>
Eric Miao49cbe782009-01-20 14:15:18 +080014
15#include <asm/page.h>
16#include <asm/mach/map.h>
17#include <mach/addr-map.h>
Haojian Zhuangf090c742010-09-21 16:43:57 +080018#include <mach/cputype.h>
Eric Miao49cbe782009-01-20 14:15:18 +080019
20#include "common.h"
21
Haojian Zhuangf090c742010-09-21 16:43:57 +080022#define MMP_CHIPID (AXI_VIRT_BASE + 0x82c00)
23
24unsigned int mmp_chip_id;
25EXPORT_SYMBOL(mmp_chip_id);
26
Eric Miao49cbe782009-01-20 14:15:18 +080027static struct map_desc standard_io_desc[] __initdata = {
28 {
29 .pfn = __phys_to_pfn(APB_PHYS_BASE),
30 .virtual = APB_VIRT_BASE,
31 .length = APB_PHYS_SIZE,
32 .type = MT_DEVICE,
33 }, {
34 .pfn = __phys_to_pfn(AXI_PHYS_BASE),
35 .virtual = AXI_VIRT_BASE,
36 .length = AXI_PHYS_SIZE,
37 .type = MT_DEVICE,
38 },
39};
40
Eric Miao80228872010-07-15 17:50:13 +080041void __init mmp_map_io(void)
Eric Miao49cbe782009-01-20 14:15:18 +080042{
43 iotable_init(standard_io_desc, ARRAY_SIZE(standard_io_desc));
Haojian Zhuangf090c742010-09-21 16:43:57 +080044
45 /* this is early, initialize mmp_chip_id here */
46 mmp_chip_id = __raw_readl(MMP_CHIPID);
Eric Miao49cbe782009-01-20 14:15:18 +080047}