1 /* linux/arch/arm/mach-s5pv210/cpu.c
2 *
3 * Copyright (c) 2010 Samsung Electronics Co., Ltd.
4 * http://www.samsung.com
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11 #include <linux/kernel.h>
12 #include <linux/types.h>
13 #include <linux/interrupt.h>
14 #include <linux/list.h>
15 #include <linux/timer.h>
16 #include <linux/init.h>
17 #include <linux/module.h>
18 #include <linux/clk.h>
19 #include <linux/io.h>
20 #include <linux/sysdev.h>
21 #include <linux/platform_device.h>
22 #include <linux/sched.h>
23
24 #include <asm/mach/arch.h>
25 #include <asm/mach/map.h>
26 #include <asm/mach/irq.h>
27
28 #include <asm/proc-fns.h>
29 #include <mach/map.h>
30 #include <mach/regs-clock.h>
31
32 #include <plat/cpu.h>
33 #include <plat/devs.h>
34 #include <plat/clock.h>
35 #include <plat/fb-core.h>
36 #include <plat/s5pv210.h>
37 #include <plat/adc-core.h>
38 #include <plat/ata-core.h>
39 #include <plat/fimc-core.h>
40 #include <plat/iic-core.h>
41 #include <plat/keypad-core.h>
42 #include <plat/sdhci.h>
43 #include <plat/reset.h>
44
45 /* Initial IO mappings */
46
47 static struct map_desc s5pv210_iodesc[] __initdata = {
48 {
49 .virtual = (unsigned long)S5P_VA_SYSTIMER,
50 .pfn = __phys_to_pfn(S5PV210_PA_SYSTIMER),
51 .length = SZ_4K,
52 .type = MT_DEVICE,
53 }, {
54 .virtual = (unsigned long)S5P_VA_GPIO,
55 .pfn = __phys_to_pfn(S5PV210_PA_GPIO),
56 .length = SZ_4K,
57 .type = MT_DEVICE,
58 }, {
59 .virtual = (unsigned long)VA_VIC0,
60 .pfn = __phys_to_pfn(S5PV210_PA_VIC0),
61 .length = SZ_16K,
62 .type = MT_DEVICE,
63 }, {
64 .virtual = (unsigned long)VA_VIC1,
65 .pfn = __phys_to_pfn(S5PV210_PA_VIC1),
66 .length = SZ_16K,
67 .type = MT_DEVICE,
68 }, {
69 .virtual = (unsigned long)VA_VIC2,
70 .pfn = __phys_to_pfn(S5PV210_PA_VIC2),
71 .length = SZ_16K,
72 .type = MT_DEVICE,
73 }, {
74 .virtual = (unsigned long)VA_VIC3,
75 .pfn = __phys_to_pfn(S5PV210_PA_VIC3),
76 .length = SZ_16K,
77 .type = MT_DEVICE,
78 }, {
79 .virtual = (unsigned long)S3C_VA_UART,
80 .pfn = __phys_to_pfn(S3C_PA_UART),
81 .length = SZ_512K,
82 .type = MT_DEVICE,
83 }, {
84 .virtual = (unsigned long)S5P_VA_DMC0,
85 .pfn = __phys_to_pfn(S5PV210_PA_DMC0),
86 .length = SZ_4K,
87 .type = MT_DEVICE,
88 }, {
89 .virtual = (unsigned long)S5P_VA_DMC1,
90 .pfn = __phys_to_pfn(S5PV210_PA_DMC1),
91 .length = SZ_4K,
92 .type = MT_DEVICE,
93 }, {
94 .virtual = (unsigned long)S3C_VA_USB_HSPHY,
95 .pfn =__phys_to_pfn(S5PV210_PA_HSPHY),
96 .length = SZ_4K,
97 .type = MT_DEVICE,
98 }
99 };
100
s5pv210_idle(void)101 static void s5pv210_idle(void)
102 {
103 if (!need_resched())
104 cpu_do_idle();
105
106 local_irq_enable();
107 }
108
s5pv210_sw_reset(void)109 static void s5pv210_sw_reset(void)
110 {
111 __raw_writel(0x1, S5P_SWRESET);
112 }
113
114 /* s5pv210_map_io
115 *
116 * register the standard cpu IO areas
117 */
118
s5pv210_map_io(void)119 void __init s5pv210_map_io(void)
120 {
121 iotable_init(s5pv210_iodesc, ARRAY_SIZE(s5pv210_iodesc));
122
123 /* initialise device information early */
124 s5pv210_default_sdhci0();
125 s5pv210_default_sdhci1();
126 s5pv210_default_sdhci2();
127 s5pv210_default_sdhci3();
128
129 s3c_adc_setname("s3c64xx-adc");
130
131 s3c_cfcon_setname("s5pv210-pata");
132
133 s3c_fimc_setname(0, "s5pv210-fimc");
134 s3c_fimc_setname(1, "s5pv210-fimc");
135 s3c_fimc_setname(2, "s5pv210-fimc");
136
137 /* the i2c devices are directly compatible with s3c2440 */
138 s3c_i2c0_setname("s3c2440-i2c");
139 s3c_i2c1_setname("s3c2440-i2c");
140 s3c_i2c2_setname("s3c2440-i2c");
141
142 s3c_fb_setname("s5pv210-fb");
143
144 /* Use s5pv210-keypad instead of samsung-keypad */
145 samsung_keypad_setname("s5pv210-keypad");
146 }
147
s5pv210_init_clocks(int xtal)148 void __init s5pv210_init_clocks(int xtal)
149 {
150 printk(KERN_DEBUG "%s: initializing clocks\n", __func__);
151
152 s3c24xx_register_baseclocks(xtal);
153 s5p_register_clocks(xtal);
154 s5pv210_register_clocks();
155 s5pv210_setup_clocks();
156 }
157
s5pv210_init_irq(void)158 void __init s5pv210_init_irq(void)
159 {
160 u32 vic[4]; /* S5PV210 supports 4 VIC */
161
162 /* All the VICs are fully populated. */
163 vic[0] = ~0;
164 vic[1] = ~0;
165 vic[2] = ~0;
166 vic[3] = ~0;
167
168 s5p_init_irq(vic, ARRAY_SIZE(vic));
169 }
170
171 struct sysdev_class s5pv210_sysclass = {
172 .name = "s5pv210-core",
173 };
174
175 static struct sys_device s5pv210_sysdev = {
176 .cls = &s5pv210_sysclass,
177 };
178
s5pv210_core_init(void)179 static int __init s5pv210_core_init(void)
180 {
181 return sysdev_class_register(&s5pv210_sysclass);
182 }
183
184 core_initcall(s5pv210_core_init);
185
s5pv210_init(void)186 int __init s5pv210_init(void)
187 {
188 printk(KERN_INFO "S5PV210: Initializing architecture\n");
189
190 /* set idle function */
191 pm_idle = s5pv210_idle;
192
193 /* set sw_reset function */
194 s5p_reset_hook = s5pv210_sw_reset;
195
196 return sysdev_register(&s5pv210_sysdev);
197 }
198