/arch/arm/mach-mx2/mm-imx27.c

 1/*
 2 * arch/arm/mach-mx2/mm-imx27.c
 3 *
 4 * Copyright (C) 2008 Juergen Beisert (kernel@pengutronix.de)
 5 *
 6 * This program is free software; you can redistribute it and/or
 7 * modify it under the terms of the GNU General Public License
 8 * as published by the Free Software Foundation; either version 2
 9 * of the License, or (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
18 * MA 02110-1301, USA.
19 */
20
21#include <linux/mm.h>
22#include <linux/init.h>
23#include <mach/hardware.h>
24#include <mach/common.h>
25#include <asm/pgtable.h>
26#include <asm/mach/map.h>
27
28/* MX27 memory map definition */
29static struct map_desc imx27_io_desc[] __initdata = {
30	/*
31	 * this fixed mapping covers:
32	 * - AIPI1
33	 * - AIPI2
34	 * - AITC
35	 * - ROM Patch
36	 * - and some reserved space
37	 */
38	{
39		.virtual = MX27_AIPI_BASE_ADDR_VIRT,
40		.pfn = __phys_to_pfn(MX27_AIPI_BASE_ADDR),
41		.length = MX27_AIPI_SIZE,
42		.type = MT_DEVICE
43	},
44	/*
45	 * this fixed mapping covers:
46	 * - CSI
47	 * - ATA
48	 */
49	{
50		.virtual = MX27_SAHB1_BASE_ADDR_VIRT,
51		.pfn = __phys_to_pfn(MX27_SAHB1_BASE_ADDR),
52		.length = MX27_SAHB1_SIZE,
53		.type = MT_DEVICE
54	},
55	/*
56	 * this fixed mapping covers:
57	 * - EMI
58	 */
59	{
60		.virtual = MX27_X_MEMC_BASE_ADDR_VIRT,
61		.pfn = __phys_to_pfn(MX27_X_MEMC_BASE_ADDR),
62		.length = MX27_X_MEMC_SIZE,
63		.type = MT_DEVICE
64	},
65};
66
67/*
68 * Initialize the memory map. It is called during the
69 * system startup to create static physical to virtual
70 * memory map for the IO modules.
71 */
72void __init mx27_map_io(void)
73{
74	mxc_set_cpu_type(MXC_CPU_MX27);
75	mxc_arch_reset_init(MX27_IO_ADDRESS(MX27_WDOG_BASE_ADDR));
76
77	iotable_init(imx27_io_desc, ARRAY_SIZE(imx27_io_desc));
78}
79
80void __init mx27_init_irq(void)
81{
82	mxc_init_irq(MX27_IO_ADDRESS(MX27_AVIC_BASE_ADDR));
83}