1 /*
2 * generic.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 */
29 static struct map_desc mxc_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 = AIPI_BASE_ADDR_VIRT,
40 .pfn = __phys_to_pfn(AIPI_BASE_ADDR),
41 .length = AIPI_SIZE,
42 .type = MT_DEVICE
43 },
44 /*
45 * this fixed mapping covers:
46 * - CSI
47 * - ATA
48 */
49 {
50 .virtual = SAHB1_BASE_ADDR_VIRT,
51 .pfn = __phys_to_pfn(SAHB1_BASE_ADDR),
52 .length = SAHB1_SIZE,
53 .type = MT_DEVICE
54 },
55 /*
56 * this fixed mapping covers:
57 * - EMI
58 */
59 {
60 .virtual = X_MEMC_BASE_ADDR_VIRT,
61 .pfn = __phys_to_pfn(X_MEMC_BASE_ADDR),
62 .length = 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 */
72 void __init mx21_map_io(void)
73 {
74 mxc_set_cpu_type(MXC_CPU_MX21);
75
76 iotable_init(mxc_io_desc, ARRAY_SIZE(mxc_io_desc));
77 }
78
79 void __init mx27_map_io(void)
80 {
81 mxc_set_cpu_type(MXC_CPU_MX27);
82
83 iotable_init(mxc_io_desc, ARRAY_SIZE(mxc_io_desc));
84 }
85
86
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