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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 | ||
23 | #include <asm/mach/arch.h> | |
24 | #include <asm/mach/map.h> | |
25 | #include <asm/mach/irq.h> | |
26 | ||
27 | #include <asm/proc-fns.h> | |
28 | #include <mach/map.h> | |
29 | #include <mach/regs-clock.h> | |
30 | ||
31 | #include <plat/cpu.h> | |
32 | #include <plat/devs.h> | |
33 | #include <plat/clock.h> | |
34 | #include <plat/s5pv210.h> | |
35 | ||
36 | /* Initial IO mappings */ | |
37 | ||
38 | static struct map_desc s5pv210_iodesc[] __initdata = { | |
39 | { | |
40 | .virtual = (unsigned long)S5P_VA_SYSTIMER, | |
41 | .pfn = __phys_to_pfn(S5PV210_PA_SYSTIMER), | |
42 | .length = SZ_1M, | |
43 | .type = MT_DEVICE, | |
44 | }, { | |
45 | .virtual = (unsigned long)VA_VIC2, | |
46 | .pfn = __phys_to_pfn(S5PV210_PA_VIC2), | |
47 | .length = SZ_16K, | |
48 | .type = MT_DEVICE, | |
49 | }, { | |
50 | .virtual = (unsigned long)VA_VIC3, | |
51 | .pfn = __phys_to_pfn(S5PV210_PA_VIC3), | |
52 | .length = SZ_16K, | |
53 | .type = MT_DEVICE, | |
54 | }, { | |
55 | .virtual = (unsigned long)S5P_VA_SROMC, | |
56 | .pfn = __phys_to_pfn(S5PV210_PA_SROMC), | |
57 | .length = SZ_4K, | |
58 | .type = MT_DEVICE, | |
59 | } | |
60 | }; | |
61 | ||
62 | static void s5pv210_idle(void) | |
63 | { | |
64 | if (!need_resched()) | |
65 | cpu_do_idle(); | |
66 | ||
67 | local_irq_enable(); | |
68 | } | |
69 | ||
70 | /* s5pv210_map_io | |
71 | * | |
72 | * register the standard cpu IO areas | |
73 | */ | |
74 | ||
75 | void __init s5pv210_map_io(void) | |
76 | { | |
77 | iotable_init(s5pv210_iodesc, ARRAY_SIZE(s5pv210_iodesc)); | |
78 | } | |
79 | ||
80 | void __init s5pv210_init_clocks(int xtal) | |
81 | { | |
82 | printk(KERN_DEBUG "%s: initializing clocks\n", __func__); | |
83 | ||
84 | s3c24xx_register_baseclocks(xtal); | |
85 | s5p_register_clocks(xtal); | |
86 | s5pv210_register_clocks(); | |
87 | s5pv210_setup_clocks(); | |
88 | } | |
89 | ||
90 | void __init s5pv210_init_irq(void) | |
91 | { | |
92 | u32 vic[4]; /* S5PV210 supports 4 VIC */ | |
93 | ||
94 | /* All the VICs are fully populated. */ | |
95 | vic[0] = ~0; | |
96 | vic[1] = ~0; | |
97 | vic[2] = ~0; | |
98 | vic[3] = ~0; | |
99 | ||
100 | s5p_init_irq(vic, ARRAY_SIZE(vic)); | |
101 | } | |
102 | ||
0ad73cef | 103 | struct sysdev_class s5pv210_sysclass = { |
939d28aa KK |
104 | .name = "s5pv210-core", |
105 | }; | |
106 | ||
107 | static struct sys_device s5pv210_sysdev = { | |
108 | .cls = &s5pv210_sysclass, | |
109 | }; | |
110 | ||
111 | static int __init s5pv210_core_init(void) | |
112 | { | |
113 | return sysdev_class_register(&s5pv210_sysclass); | |
114 | } | |
115 | ||
116 | core_initcall(s5pv210_core_init); | |
117 | ||
118 | int __init s5pv210_init(void) | |
119 | { | |
120 | printk(KERN_INFO "S5PV210: Initializing architecture\n"); | |
121 | ||
122 | /* set idle function */ | |
123 | pm_idle = s5pv210_idle; | |
124 | ||
125 | return sysdev_register(&s5pv210_sysdev); | |
126 | } |