Commit | Line | Data |
---|---|---|
5f7f6a4a KK |
1 | /* linux/arch/arm/mach-s5p6442/cpu.c |
2 | * | |
3 | * Copyright (c) 2010 Samsung Electronics Co., Ltd. | |
19a2c065 | 4 | * http://www.samsung.com |
5f7f6a4a KK |
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/clk.h> | |
18 | #include <linux/io.h> | |
19 | #include <linux/sysdev.h> | |
20 | #include <linux/serial_core.h> | |
21 | #include <linux/platform_device.h> | |
4341f9b3 | 22 | #include <linux/sched.h> |
5f7f6a4a KK |
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 | ||
30 | #include <mach/hardware.h> | |
31 | #include <mach/map.h> | |
32 | #include <asm/irq.h> | |
33 | ||
34 | #include <plat/regs-serial.h> | |
35 | #include <mach/regs-clock.h> | |
36 | ||
37 | #include <plat/cpu.h> | |
38 | #include <plat/devs.h> | |
39 | #include <plat/clock.h> | |
40 | #include <plat/s5p6442.h> | |
41 | ||
42 | /* Initial IO mappings */ | |
43 | ||
44 | static struct map_desc s5p6442_iodesc[] __initdata = { | |
45 | { | |
46 | .virtual = (unsigned long)S5P_VA_SYSTIMER, | |
47 | .pfn = __phys_to_pfn(S5P6442_PA_SYSTIMER), | |
48 | .length = SZ_16K, | |
49 | .type = MT_DEVICE, | |
19a2c065 KK |
50 | }, { |
51 | .virtual = (unsigned long)S5P_VA_GPIO, | |
52 | .pfn = __phys_to_pfn(S5P6442_PA_GPIO), | |
53 | .length = SZ_4K, | |
54 | .type = MT_DEVICE, | |
55 | }, { | |
56 | .virtual = (unsigned long)VA_VIC0, | |
57 | .pfn = __phys_to_pfn(S5P6442_PA_VIC0), | |
58 | .length = SZ_16K, | |
59 | .type = MT_DEVICE, | |
60 | }, { | |
61 | .virtual = (unsigned long)VA_VIC1, | |
62 | .pfn = __phys_to_pfn(S5P6442_PA_VIC1), | |
63 | .length = SZ_16K, | |
64 | .type = MT_DEVICE, | |
5f7f6a4a KK |
65 | }, { |
66 | .virtual = (unsigned long)VA_VIC2, | |
67 | .pfn = __phys_to_pfn(S5P6442_PA_VIC2), | |
68 | .length = SZ_16K, | |
69 | .type = MT_DEVICE, | |
19a2c065 KK |
70 | }, { |
71 | .virtual = (unsigned long)S3C_VA_UART, | |
72 | .pfn = __phys_to_pfn(S3C_PA_UART), | |
73 | .length = SZ_512K, | |
74 | .type = MT_DEVICE, | |
5f7f6a4a KK |
75 | } |
76 | }; | |
77 | ||
78 | static void s5p6442_idle(void) | |
79 | { | |
80 | if (!need_resched()) | |
81 | cpu_do_idle(); | |
82 | ||
83 | local_irq_enable(); | |
84 | } | |
85 | ||
19a2c065 KK |
86 | /* |
87 | * s5p6442_map_io | |
5f7f6a4a KK |
88 | * |
89 | * register the standard cpu IO areas | |
19a2c065 | 90 | */ |
5f7f6a4a KK |
91 | |
92 | void __init s5p6442_map_io(void) | |
93 | { | |
94 | iotable_init(s5p6442_iodesc, ARRAY_SIZE(s5p6442_iodesc)); | |
95 | } | |
96 | ||
97 | void __init s5p6442_init_clocks(int xtal) | |
98 | { | |
99 | printk(KERN_DEBUG "%s: initializing clocks\n", __func__); | |
100 | ||
101 | s3c24xx_register_baseclocks(xtal); | |
102 | s5p_register_clocks(xtal); | |
103 | s5p6442_register_clocks(); | |
104 | s5p6442_setup_clocks(); | |
105 | } | |
106 | ||
107 | void __init s5p6442_init_irq(void) | |
108 | { | |
109 | /* S5P6442 supports 3 VIC */ | |
110 | u32 vic[3]; | |
111 | ||
112 | /* VIC0, VIC1, and VIC2: some interrupt reserved */ | |
113 | vic[0] = 0x7fefffff; | |
114 | vic[1] = 0X7f389c81; | |
115 | vic[2] = 0X1bbbcfff; | |
116 | ||
117 | s5p_init_irq(vic, ARRAY_SIZE(vic)); | |
118 | } | |
119 | ||
0ad73cef | 120 | struct sysdev_class s5p6442_sysclass = { |
5f7f6a4a KK |
121 | .name = "s5p6442-core", |
122 | }; | |
123 | ||
124 | static struct sys_device s5p6442_sysdev = { | |
125 | .cls = &s5p6442_sysclass, | |
126 | }; | |
127 | ||
128 | static int __init s5p6442_core_init(void) | |
129 | { | |
130 | return sysdev_class_register(&s5p6442_sysclass); | |
131 | } | |
132 | ||
133 | core_initcall(s5p6442_core_init); | |
134 | ||
135 | int __init s5p6442_init(void) | |
136 | { | |
137 | printk(KERN_INFO "S5P6442: Initializing architecture\n"); | |
138 | ||
139 | /* set idle function */ | |
140 | pm_idle = s5p6442_idle; | |
141 | ||
142 | return sysdev_register(&s5p6442_sysdev); | |
143 | } |