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
34 /*!
35 * @file mm.c
36 *
37 * @brief This file creates static virtual to physical mappings, common to all MX3 boards.
38 *
39 * @ingroup Memory
40 */
41
42 /*!
43 * This table defines static virtual address mappings for I/O regions.
44 * These are the mappings common across all MX3 boards.
45 */
46 static struct map_desc mxc_io_desc[] __initdata = {
47 {
48 .virtual = X_MEMC_BASE_ADDR_VIRT,
49 .pfn = __phys_to_pfn(X_MEMC_BASE_ADDR),
50 .length = X_MEMC_SIZE,
51 .type = MT_DEVICE
52 }, {
53 .virtual = AVIC_BASE_ADDR_VIRT,
54 .pfn = __phys_to_pfn(AVIC_BASE_ADDR),
55 .length = AVIC_SIZE,
56 .type = MT_DEVICE_NONSHARED
57 }, {
58 .virtual = AIPS1_BASE_ADDR_VIRT,
59 .pfn = __phys_to_pfn(AIPS1_BASE_ADDR),
60 .length = AIPS1_SIZE,
61 .type = MT_DEVICE_NONSHARED
62 }, {
63 .virtual = AIPS2_BASE_ADDR_VIRT,
64 .pfn = __phys_to_pfn(AIPS2_BASE_ADDR),
65 .length = AIPS2_SIZE,
66 .type = MT_DEVICE_NONSHARED
67 },
68 };
69
70 /*!
71 * This function initializes the memory map. It is called during the
72 * system startup to create static physical to virtual memory mappings
73 * for the IO modules.
74 */
75 void __init mx31_map_io(void)
76 {
77 mxc_set_cpu_type(MXC_CPU_MX31);
78
79 iotable_init(mxc_io_desc, ARRAY_SIZE(mxc_io_desc));
80 }
81
82 void __init mx35_map_io(void)
83 {
84 mxc_set_cpu_type(MXC_CPU_MX35);
85
86 iotable_init(mxc_io_desc, ARRAY_SIZE(mxc_io_desc));
87 }
88
89 #ifdef CONFIG_CACHE_L2X0
90 static int mxc_init_l2x0(void)
91 {
92 void __iomem *l2x0_base;
93
94 l2x0_base = ioremap(L2CC_BASE_ADDR, 4096);
95 if (IS_ERR(l2x0_base)) {
96 printk(KERN_ERR "remapping L2 cache area failed with %ld\n",
97 PTR_ERR(l2x0_base));
98 return 0;
99 }
100
101 l2x0_init(l2x0_base, 0x00030024, 0x00000000);
102
103 return 0;
104 }
105
106 arch_initcall(mxc_init_l2x0);
107 #endif
108
109
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