Merge branch 'msm-mmc_sdcc' of git://codeaurora.org/quic/kernel/dwalker/linux-msm
[sfrench/cifs-2.6.git] / arch / arm / mach-mx3 / mm.c
1 /*
2  *  Copyright (C) 1999,2000 Arm Limited
3  *  Copyright (C) 2000 Deep Blue Solutions Ltd
4  *  Copyright (C) 2002 Shane Nay (shane@minirl.com)
5  *  Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved.
6  *    - add MX31 specific definitions
7  *
8  * This program is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License as published by
10  * the Free Software Foundation; either version 2 of the License, or
11  * (at your option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program; if not, write to the Free Software
20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
21  */
22
23 #include <linux/mm.h>
24 #include <linux/init.h>
25 #include <linux/err.h>
26
27 #include <asm/pgtable.h>
28 #include <asm/mach/map.h>
29 #include <asm/hardware/cache-l2x0.h>
30
31 #include <mach/common.h>
32 #include <mach/hardware.h>
33 #include <mach/iomux-v3.h>
34
35 /*!
36  * @file mm.c
37  *
38  * @brief This file creates static virtual to physical mappings, common to all MX3 boards.
39  *
40  * @ingroup Memory
41  */
42
43 /*!
44  * This table defines static virtual address mappings for I/O regions.
45  * These are the mappings common across all MX3 boards.
46  */
47 static struct map_desc mxc_io_desc[] __initdata = {
48         {
49                 .virtual        = X_MEMC_BASE_ADDR_VIRT,
50                 .pfn            = __phys_to_pfn(X_MEMC_BASE_ADDR),
51                 .length         = X_MEMC_SIZE,
52                 .type           = MT_DEVICE
53         }, {
54                 .virtual        = AVIC_BASE_ADDR_VIRT,
55                 .pfn            = __phys_to_pfn(AVIC_BASE_ADDR),
56                 .length         = AVIC_SIZE,
57                 .type           = MT_DEVICE_NONSHARED
58         }, {
59                 .virtual        = AIPS1_BASE_ADDR_VIRT,
60                 .pfn            = __phys_to_pfn(AIPS1_BASE_ADDR),
61                 .length         = AIPS1_SIZE,
62                 .type           = MT_DEVICE_NONSHARED
63         }, {
64                 .virtual        = AIPS2_BASE_ADDR_VIRT,
65                 .pfn            = __phys_to_pfn(AIPS2_BASE_ADDR),
66                 .length         = AIPS2_SIZE,
67                 .type           = MT_DEVICE_NONSHARED
68         }, {
69                 .virtual = SPBA0_BASE_ADDR_VIRT,
70                 .pfn = __phys_to_pfn(SPBA0_BASE_ADDR),
71                 .length = SPBA0_SIZE,
72                 .type = MT_DEVICE_NONSHARED
73         },
74 };
75
76 /*!
77  * This function initializes the memory map. It is called during the
78  * system startup to create static physical to virtual memory mappings
79  * for the IO modules.
80  */
81 void __init mx31_map_io(void)
82 {
83         mxc_set_cpu_type(MXC_CPU_MX31);
84         mxc_arch_reset_init(IO_ADDRESS(WDOG_BASE_ADDR));
85
86         iotable_init(mxc_io_desc, ARRAY_SIZE(mxc_io_desc));
87 }
88
89 #ifdef CONFIG_ARCH_MX35
90 void __init mx35_map_io(void)
91 {
92         mxc_set_cpu_type(MXC_CPU_MX35);
93         mxc_iomux_v3_init(IO_ADDRESS(IOMUXC_BASE_ADDR));
94         mxc_arch_reset_init(IO_ADDRESS(WDOG_BASE_ADDR));
95
96         iotable_init(mxc_io_desc, ARRAY_SIZE(mxc_io_desc));
97 }
98 #endif
99
100 void __init mx31_init_irq(void)
101 {
102         mxc_init_irq(IO_ADDRESS(AVIC_BASE_ADDR));
103 }
104
105 void __init mx35_init_irq(void)
106 {
107         mx31_init_irq();
108 }
109
110 #ifdef CONFIG_CACHE_L2X0
111 static int mxc_init_l2x0(void)
112 {
113         void __iomem *l2x0_base;
114
115         l2x0_base = ioremap(L2CC_BASE_ADDR, 4096);
116         if (IS_ERR(l2x0_base)) {
117                 printk(KERN_ERR "remapping L2 cache area failed with %ld\n",
118                                 PTR_ERR(l2x0_base));
119                 return 0;
120         }
121
122         l2x0_init(l2x0_base, 0x00030024, 0x00000000);
123
124         return 0;
125 }
126
127 arch_initcall(mxc_init_l2x0);
128 #endif
129