Merge branch 'kms-merge' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel...
[pandora-kernel.git] / arch / arm / mach-mx5 / mm.c
1 /*
2  * Copyright 2008-2009 Freescale Semiconductor, Inc. All Rights Reserved.
3  *
4  * The code contained herein is licensed under the GNU General Public
5  * License.  You may obtain a copy of the GNU General Public License
6  * Version 2 or later at the following locations:
7  *
8  * http://www.opensource.org/licenses/gpl-license.html
9  * http://www.gnu.org/copyleft/gpl.html
10  *
11  * Create static mapping between physical to virtual memory.
12  */
13
14 #include <linux/mm.h>
15 #include <linux/init.h>
16
17 #include <asm/mach/map.h>
18
19 #include <mach/hardware.h>
20 #include <mach/common.h>
21 #include <mach/iomux-v3.h>
22
23 /*
24  * Define the MX51 memory map.
25  */
26 static struct map_desc mxc_io_desc[] __initdata = {
27         {
28                 .virtual = MX51_IRAM_BASE_ADDR_VIRT,
29                 .pfn = __phys_to_pfn(MX51_IRAM_BASE_ADDR),
30                 .length = MX51_IRAM_SIZE,
31                 .type = MT_DEVICE
32         }, {
33                 .virtual = MX51_DEBUG_BASE_ADDR_VIRT,
34                 .pfn = __phys_to_pfn(MX51_DEBUG_BASE_ADDR),
35                 .length = MX51_DEBUG_SIZE,
36                 .type = MT_DEVICE
37         }, {
38                 .virtual = MX51_AIPS1_BASE_ADDR_VIRT,
39                 .pfn = __phys_to_pfn(MX51_AIPS1_BASE_ADDR),
40                 .length = MX51_AIPS1_SIZE,
41                 .type = MT_DEVICE
42         }, {
43                 .virtual = MX51_SPBA0_BASE_ADDR_VIRT,
44                 .pfn = __phys_to_pfn(MX51_SPBA0_BASE_ADDR),
45                 .length = MX51_SPBA0_SIZE,
46                 .type = MT_DEVICE
47         }, {
48                 .virtual = MX51_AIPS2_BASE_ADDR_VIRT,
49                 .pfn = __phys_to_pfn(MX51_AIPS2_BASE_ADDR),
50                 .length = MX51_AIPS2_SIZE,
51                 .type = MT_DEVICE
52         },
53 };
54
55 /*
56  * This function initializes the memory map. It is called during the
57  * system startup to create static physical to virtual memory mappings
58  * for the IO modules.
59  */
60 void __init mx51_map_io(void)
61 {
62         mxc_set_cpu_type(MXC_CPU_MX51);
63         mxc_iomux_v3_init(MX51_IO_ADDRESS(MX51_IOMUXC_BASE_ADDR));
64         mxc_arch_reset_init(MX51_IO_ADDRESS(MX51_WDOG_BASE_ADDR));
65         iotable_init(mxc_io_desc, ARRAY_SIZE(mxc_io_desc));
66 }
67
68 int imx51_register_gpios(void);
69
70 void __init mx51_init_irq(void)
71 {
72         unsigned long tzic_addr;
73         void __iomem *tzic_virt;
74
75         if (mx51_revision() < MX51_CHIP_REV_2_0)
76                 tzic_addr = MX51_TZIC_BASE_ADDR_TO1;
77         else
78                 tzic_addr = MX51_TZIC_BASE_ADDR;
79
80         tzic_virt = ioremap(tzic_addr, SZ_16K);
81         if (!tzic_virt)
82                 panic("unable to map TZIC interrupt controller\n");
83
84         tzic_init_irq(tzic_virt);
85         imx51_register_gpios();
86 }