1 /*
2 * linux/arch/arm/mach-omap2/io.c
3 *
4 * OMAP2 I/O mapping code
5 *
6 * Copyright (C) 2005 Nokia Corporation
7 * Copyright (C) 2007 Texas Instruments
8 *
9 * Author:
10 * Juha Yrjola <juha.yrjola@nokia.com>
11 * Syed Khasim <x0khasim@ti.com>
12 *
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License version 2 as
15 * published by the Free Software Foundation.
16 */
17
18 #include <linux/module.h>
19 #include <linux/kernel.h>
20 #include <linux/init.h>
21 #include <linux/io.h>
22
23 #include <asm/tlb.h>
24
25 #include <asm/mach/map.h>
26
27 #include <mach/mux.h>
28 #include <mach/omapfb.h>
29 #include <mach/sram.h>
30
31 #include "memory.h"
32
33 #include "clock.h"
34
35 #include <mach/powerdomain.h>
36
37 #include "powerdomains.h"
38
39 #include <mach/clockdomain.h>
40 #include "clockdomains.h"
41
42 /*
43 * The machine specific code may provide the extra mapping besides the
44 * default mapping provided here.
45 */
46
47 #ifdef CONFIG_ARCH_OMAP24XX
48 static struct map_desc omap24xx_io_desc[] __initdata = {
49 {
50 .virtual = L3_24XX_VIRT,
51 .pfn = __phys_to_pfn(L3_24XX_PHYS),
52 .length = L3_24XX_SIZE,
53 .type = MT_DEVICE
54 },
55 {
56 .virtual = L4_24XX_VIRT,
57 .pfn = __phys_to_pfn(L4_24XX_PHYS),
58 .length = L4_24XX_SIZE,
59 .type = MT_DEVICE
60 },
61 };
62
63 #ifdef CONFIG_ARCH_OMAP2420
64 static struct map_desc omap242x_io_desc[] __initdata = {
65 {
66 .virtual = DSP_MEM_24XX_VIRT,
67 .pfn = __phys_to_pfn(DSP_MEM_24XX_PHYS),
68 .length = DSP_MEM_24XX_SIZE,
69 .type = MT_DEVICE
70 },
71 {
72 .virtual = DSP_IPI_24XX_VIRT,
73 .pfn = __phys_to_pfn(DSP_IPI_24XX_PHYS),
74 .length = DSP_IPI_24XX_SIZE,
75 .type = MT_DEVICE
76 },
77 {
78 .virtual = DSP_MMU_24XX_VIRT,
79 .pfn = __phys_to_pfn(DSP_MMU_24XX_PHYS),
80 .length = DSP_MMU_24XX_SIZE,
81 .type = MT_DEVICE
82 },
83 };
84
85 #endif
86
87 #ifdef CONFIG_ARCH_OMAP2430
88 static struct map_desc omap243x_io_desc[] __initdata = {
89 {
90 .virtual = L4_WK_243X_VIRT,
91 .pfn = __phys_to_pfn(L4_WK_243X_PHYS),
92 .length = L4_WK_243X_SIZE,
93 .type = MT_DEVICE
94 },
95 {
96 .virtual = OMAP243X_GPMC_VIRT,
97 .pfn = __phys_to_pfn(OMAP243X_GPMC_PHYS),
98 .length = OMAP243X_GPMC_SIZE,
99 .type = MT_DEVICE
100 },
101 {
102 .virtual = OMAP243X_SDRC_VIRT,
103 .pfn = __phys_to_pfn(OMAP243X_SDRC_PHYS),
104 .length = OMAP243X_SDRC_SIZE,
105 .type = MT_DEVICE
106 },
107 {
108 .virtual = OMAP243X_SMS_VIRT,
109 .pfn = __phys_to_pfn(OMAP243X_SMS_PHYS),
110 .length = OMAP243X_SMS_SIZE,
111 .type = MT_DEVICE
112 },
113 };
114 #endif
115 #endif
116
117 #ifdef CONFIG_ARCH_OMAP34XX
118 static struct map_desc omap34xx_io_desc[] __initdata = {
119 {
120 .virtual = L3_34XX_VIRT,
121 .pfn = __phys_to_pfn(L3_34XX_PHYS),
122 .length = L3_34XX_SIZE,
123 .type = MT_DEVICE
124 },
125 {
126 .virtual = L4_34XX_VIRT,
127 .pfn = __phys_to_pfn(L4_34XX_PHYS),
128 .length = L4_34XX_SIZE,
129 .type = MT_DEVICE
130 },
131 {
132 .virtual = L4_WK_34XX_VIRT,
133 .pfn = __phys_to_pfn(L4_WK_34XX_PHYS),
134 .length = L4_WK_34XX_SIZE,
135 .type = MT_DEVICE
136 },
137 {
138 .virtual = OMAP34XX_GPMC_VIRT,
139 .pfn = __phys_to_pfn(OMAP34XX_GPMC_PHYS),
140 .length = OMAP34XX_GPMC_SIZE,
141 .type = MT_DEVICE
142 },
143 {
144 .virtual = OMAP343X_SMS_VIRT,
145 .pfn = __phys_to_pfn(OMAP343X_SMS_PHYS),
146 .length = OMAP343X_SMS_SIZE,
147 .type = MT_DEVICE
148 },
149 {
150 .virtual = OMAP343X_SDRC_VIRT,
151 .pfn = __phys_to_pfn(OMAP343X_SDRC_PHYS),
152 .length = OMAP343X_SDRC_SIZE,
153 .type = MT_DEVICE
154 },
155 {
156 .virtual = L4_PER_34XX_VIRT,
157 .pfn = __phys_to_pfn(L4_PER_34XX_PHYS),
158 .length = L4_PER_34XX_SIZE,
159 .type = MT_DEVICE
160 },
161 {
162 .virtual = L4_EMU_34XX_VIRT,
163 .pfn = __phys_to_pfn(L4_EMU_34XX_PHYS),
164 .length = L4_EMU_34XX_SIZE,
165 .type = MT_DEVICE
166 },
167 };
168 #endif
169
omap2_map_common_io(void)170 void __init omap2_map_common_io(void)
171 {
172 #if defined(CONFIG_ARCH_OMAP2420)
173 iotable_init(omap24xx_io_desc, ARRAY_SIZE(omap24xx_io_desc));
174 iotable_init(omap242x_io_desc, ARRAY_SIZE(omap242x_io_desc));
175 #endif
176
177 #if defined(CONFIG_ARCH_OMAP2430)
178 iotable_init(omap24xx_io_desc, ARRAY_SIZE(omap24xx_io_desc));
179 iotable_init(omap243x_io_desc, ARRAY_SIZE(omap243x_io_desc));
180 #endif
181
182 #if defined(CONFIG_ARCH_OMAP34XX)
183 iotable_init(omap34xx_io_desc, ARRAY_SIZE(omap34xx_io_desc));
184 #endif
185
186 /* Normally devicemaps_init() would flush caches and tlb after
187 * mdesc->map_io(), but we must also do it here because of the CPU
188 * revision check below.
189 */
190 local_flush_tlb_all();
191 flush_cache_all();
192
193 omap2_check_revision();
194 omap_sram_init();
195 omapfb_reserve_sdram();
196 }
197
omap2_init_common_hw(void)198 void __init omap2_init_common_hw(void)
199 {
200 omap2_mux_init();
201 pwrdm_init(powerdomains_omap);
202 clkdm_init(clockdomains_omap, clkdm_pwrdm_autodeps);
203 omap2_clk_init();
204 omap2_init_memory();
205 gpmc_init();
206 }
207