1 /* linux/arch/arm/mach-s5pc100/cpu.c
2 *
3 * Copyright (c) 2010 Samsung Electronics Co., Ltd.
4 * http://www.samsung.com
5 *
6 * Copyright 2009 Samsung Electronics Co.
7 * Byungho Min <bhmin@samsung.com>
8 *
9 * Based on mach-s3c6410/cpu.c
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License version 2 as
13 * published by the Free Software Foundation.
14 */
15
16 #include <linux/kernel.h>
17 #include <linux/types.h>
18 #include <linux/interrupt.h>
19 #include <linux/list.h>
20 #include <linux/timer.h>
21 #include <linux/init.h>
22 #include <linux/clk.h>
23 #include <linux/io.h>
24 #include <linux/sysdev.h>
25 #include <linux/serial_core.h>
26 #include <linux/platform_device.h>
27 #include <linux/sched.h>
28
29 #include <asm/mach/arch.h>
30 #include <asm/mach/map.h>
31 #include <asm/mach/irq.h>
32
33 #include <asm/proc-fns.h>
34
35 #include <mach/hardware.h>
36 #include <mach/map.h>
37 #include <asm/irq.h>
38
39 #include <plat/regs-serial.h>
40 #include <mach/regs-clock.h>
41
42 #include <plat/cpu.h>
43 #include <plat/devs.h>
44 #include <plat/clock.h>
45 #include <plat/ata-core.h>
46 #include <plat/iic-core.h>
47 #include <plat/sdhci.h>
48 #include <plat/adc-core.h>
49 #include <plat/onenand-core.h>
50 #include <plat/fb-core.h>
51
52 #include <plat/s5pc100.h>
53
54 /* Initial IO mappings */
55
56 static struct map_desc s5pc100_iodesc[] __initdata = {
57 {
58 .virtual = (unsigned long)S5P_VA_SYSTIMER,
59 .pfn = __phys_to_pfn(S5PC100_PA_SYSTIMER),
60 .length = SZ_16K,
61 .type = MT_DEVICE,
62 }, {
63 .virtual = (unsigned long)S5P_VA_GPIO,
64 .pfn = __phys_to_pfn(S5PC100_PA_GPIO),
65 .length = SZ_4K,
66 .type = MT_DEVICE,
67 }, {
68 .virtual = (unsigned long)VA_VIC0,
69 .pfn = __phys_to_pfn(S5PC100_PA_VIC0),
70 .length = SZ_16K,
71 .type = MT_DEVICE,
72 }, {
73 .virtual = (unsigned long)VA_VIC1,
74 .pfn = __phys_to_pfn(S5PC100_PA_VIC1),
75 .length = SZ_16K,
76 .type = MT_DEVICE,
77 }, {
78 .virtual = (unsigned long)VA_VIC2,
79 .pfn = __phys_to_pfn(S5PC100_PA_VIC2),
80 .length = SZ_16K,
81 .type = MT_DEVICE,
82 }, {
83 .virtual = (unsigned long)S3C_VA_UART,
84 .pfn = __phys_to_pfn(S3C_PA_UART),
85 .length = SZ_512K,
86 .type = MT_DEVICE,
87 }, {
88 .virtual = (unsigned long)S5PC100_VA_OTHERS,
89 .pfn = __phys_to_pfn(S5PC100_PA_OTHERS),
90 .length = SZ_4K,
91 .type = MT_DEVICE,
92 }
93 };
94
s5pc100_idle(void)95 static void s5pc100_idle(void)
96 {
97 if (!need_resched())
98 cpu_do_idle();
99
100 local_irq_enable();
101 }
102
103 /* s5pc100_map_io
104 *
105 * register the standard cpu IO areas
106 */
107
s5pc100_map_io(void)108 void __init s5pc100_map_io(void)
109 {
110 iotable_init(s5pc100_iodesc, ARRAY_SIZE(s5pc100_iodesc));
111
112 /* initialise device information early */
113 s5pc100_default_sdhci0();
114 s5pc100_default_sdhci1();
115 s5pc100_default_sdhci2();
116
117 s3c_adc_setname("s3c64xx-adc");
118
119 /* the i2c devices are directly compatible with s3c2440 */
120 s3c_i2c0_setname("s3c2440-i2c");
121 s3c_i2c1_setname("s3c2440-i2c");
122
123 s3c_onenand_setname("s5pc100-onenand");
124 s3c_fb_setname("s5pc100-fb");
125 s3c_cfcon_setname("s5pc100-pata");
126 }
127
s5pc100_init_clocks(int xtal)128 void __init s5pc100_init_clocks(int xtal)
129 {
130 printk(KERN_DEBUG "%s: initializing clocks\n", __func__);
131
132 s3c24xx_register_baseclocks(xtal);
133 s5p_register_clocks(xtal);
134 s5pc100_register_clocks();
135 s5pc100_setup_clocks();
136 }
137
s5pc100_init_irq(void)138 void __init s5pc100_init_irq(void)
139 {
140 u32 vic[] = {~0, ~0, ~0};
141
142 /* VIC0, VIC1, and VIC2 are fully populated. */
143 s5p_init_irq(vic, ARRAY_SIZE(vic));
144 }
145
146 static struct sysdev_class s5pc100_sysclass = {
147 .name = "s5pc100-core",
148 };
149
150 static struct sys_device s5pc100_sysdev = {
151 .cls = &s5pc100_sysclass,
152 };
153
s5pc100_core_init(void)154 static int __init s5pc100_core_init(void)
155 {
156 return sysdev_class_register(&s5pc100_sysclass);
157 }
158
159 core_initcall(s5pc100_core_init);
160
s5pc100_init(void)161 int __init s5pc100_init(void)
162 {
163 printk(KERN_INFO "S5PC100: Initializing architecture\n");
164
165 /* set idle function */
166 pm_idle = s5pc100_idle;
167
168 return sysdev_register(&s5pc100_sysdev);
169 }
170