diff options
Diffstat (limited to 'arch/arm/mach-s5p64x0/cpu.c')
-rw-r--r-- | arch/arm/mach-s5p64x0/cpu.c | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/arch/arm/mach-s5p64x0/cpu.c b/arch/arm/mach-s5p64x0/cpu.c new file mode 100644 index 000000000000..b8d02eb4cf30 --- /dev/null +++ b/arch/arm/mach-s5p64x0/cpu.c | |||
@@ -0,0 +1,209 @@ | |||
1 | /* linux/arch/arm/mach-s5p64x0/cpu.c | ||
2 | * | ||
3 | * Copyright (c) 2009-2010 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/clk.h> | ||
18 | #include <linux/io.h> | ||
19 | #include <linux/sysdev.h> | ||
20 | #include <linux/serial_core.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 | #include <asm/proc-fns.h> | ||
28 | #include <asm/irq.h> | ||
29 | |||
30 | #include <mach/hardware.h> | ||
31 | #include <mach/map.h> | ||
32 | #include <mach/regs-clock.h> | ||
33 | |||
34 | #include <plat/regs-serial.h> | ||
35 | #include <plat/cpu.h> | ||
36 | #include <plat/devs.h> | ||
37 | #include <plat/clock.h> | ||
38 | #include <plat/s5p6440.h> | ||
39 | #include <plat/s5p6450.h> | ||
40 | #include <plat/adc-core.h> | ||
41 | |||
42 | /* Initial IO mappings */ | ||
43 | |||
44 | static struct map_desc s5p64x0_iodesc[] __initdata = { | ||
45 | { | ||
46 | .virtual = (unsigned long)S5P_VA_GPIO, | ||
47 | .pfn = __phys_to_pfn(S5P64X0_PA_GPIO), | ||
48 | .length = SZ_4K, | ||
49 | .type = MT_DEVICE, | ||
50 | }, { | ||
51 | .virtual = (unsigned long)VA_VIC0, | ||
52 | .pfn = __phys_to_pfn(S5P64X0_PA_VIC0), | ||
53 | .length = SZ_16K, | ||
54 | .type = MT_DEVICE, | ||
55 | }, { | ||
56 | .virtual = (unsigned long)VA_VIC1, | ||
57 | .pfn = __phys_to_pfn(S5P64X0_PA_VIC1), | ||
58 | .length = SZ_16K, | ||
59 | .type = MT_DEVICE, | ||
60 | }, | ||
61 | }; | ||
62 | |||
63 | static struct map_desc s5p6440_iodesc[] __initdata = { | ||
64 | { | ||
65 | .virtual = (unsigned long)S3C_VA_UART, | ||
66 | .pfn = __phys_to_pfn(S5P6440_PA_UART(0)), | ||
67 | .length = SZ_4K, | ||
68 | .type = MT_DEVICE, | ||
69 | }, | ||
70 | }; | ||
71 | |||
72 | static struct map_desc s5p6450_iodesc[] __initdata = { | ||
73 | { | ||
74 | .virtual = (unsigned long)S3C_VA_UART, | ||
75 | .pfn = __phys_to_pfn(S5P6450_PA_UART(0)), | ||
76 | .length = SZ_512K, | ||
77 | .type = MT_DEVICE, | ||
78 | }, { | ||
79 | .virtual = (unsigned long)S3C_VA_UART + SZ_512K, | ||
80 | .pfn = __phys_to_pfn(S5P6450_PA_UART(5)), | ||
81 | .length = SZ_4K, | ||
82 | .type = MT_DEVICE, | ||
83 | }, | ||
84 | }; | ||
85 | |||
86 | static void s5p64x0_idle(void) | ||
87 | { | ||
88 | unsigned long val; | ||
89 | |||
90 | if (!need_resched()) { | ||
91 | val = __raw_readl(S5P64X0_PWR_CFG); | ||
92 | val &= ~(0x3 << 5); | ||
93 | val |= (0x1 << 5); | ||
94 | __raw_writel(val, S5P64X0_PWR_CFG); | ||
95 | |||
96 | cpu_do_idle(); | ||
97 | } | ||
98 | local_irq_enable(); | ||
99 | } | ||
100 | |||
101 | /* | ||
102 | * s5p64x0_map_io | ||
103 | * | ||
104 | * register the standard CPU IO areas | ||
105 | */ | ||
106 | |||
107 | void __init s5p6440_map_io(void) | ||
108 | { | ||
109 | /* initialize any device information early */ | ||
110 | s3c_adc_setname("s3c64xx-adc"); | ||
111 | |||
112 | iotable_init(s5p64x0_iodesc, ARRAY_SIZE(s5p64x0_iodesc)); | ||
113 | iotable_init(s5p6440_iodesc, ARRAY_SIZE(s5p6440_iodesc)); | ||
114 | } | ||
115 | |||
116 | void __init s5p6450_map_io(void) | ||
117 | { | ||
118 | /* initialize any device information early */ | ||
119 | s3c_adc_setname("s3c64xx-adc"); | ||
120 | |||
121 | iotable_init(s5p64x0_iodesc, ARRAY_SIZE(s5p64x0_iodesc)); | ||
122 | iotable_init(s5p6450_iodesc, ARRAY_SIZE(s5p6440_iodesc)); | ||
123 | } | ||
124 | |||
125 | /* | ||
126 | * s5p64x0_init_clocks | ||
127 | * | ||
128 | * register and setup the CPU clocks | ||
129 | */ | ||
130 | |||
131 | void __init s5p6440_init_clocks(int xtal) | ||
132 | { | ||
133 | printk(KERN_DEBUG "%s: initializing clocks\n", __func__); | ||
134 | |||
135 | s3c24xx_register_baseclocks(xtal); | ||
136 | s5p_register_clocks(xtal); | ||
137 | s5p6440_register_clocks(); | ||
138 | s5p6440_setup_clocks(); | ||
139 | } | ||
140 | |||
141 | void __init s5p6450_init_clocks(int xtal) | ||
142 | { | ||
143 | printk(KERN_DEBUG "%s: initializing clocks\n", __func__); | ||
144 | |||
145 | s3c24xx_register_baseclocks(xtal); | ||
146 | s5p_register_clocks(xtal); | ||
147 | s5p6450_register_clocks(); | ||
148 | s5p6450_setup_clocks(); | ||
149 | } | ||
150 | |||
151 | /* | ||
152 | * s5p64x0_init_irq | ||
153 | * | ||
154 | * register the CPU interrupts | ||
155 | */ | ||
156 | |||
157 | void __init s5p6440_init_irq(void) | ||
158 | { | ||
159 | /* S5P6440 supports 2 VIC */ | ||
160 | u32 vic[2]; | ||
161 | |||
162 | /* | ||
163 | * VIC0 is missing IRQ_VIC0[3, 4, 8, 10, (12-22)] | ||
164 | * VIC1 is missing IRQ VIC1[1, 3, 4, 10, 11, 12, 14, 15, 22] | ||
165 | */ | ||
166 | vic[0] = 0xff800ae7; | ||
167 | vic[1] = 0xffbf23e5; | ||
168 | |||
169 | s5p_init_irq(vic, ARRAY_SIZE(vic)); | ||
170 | } | ||
171 | |||
172 | void __init s5p6450_init_irq(void) | ||
173 | { | ||
174 | /* S5P6450 supports only 2 VIC */ | ||
175 | u32 vic[2]; | ||
176 | |||
177 | /* | ||
178 | * VIC0 is missing IRQ_VIC0[(13-15), (21-22)] | ||
179 | * VIC1 is missing IRQ VIC1[12, 14, 23] | ||
180 | */ | ||
181 | vic[0] = 0xff9f1fff; | ||
182 | vic[1] = 0xff7fafff; | ||
183 | |||
184 | s5p_init_irq(vic, ARRAY_SIZE(vic)); | ||
185 | } | ||
186 | |||
187 | struct sysdev_class s5p64x0_sysclass = { | ||
188 | .name = "s5p64x0-core", | ||
189 | }; | ||
190 | |||
191 | static struct sys_device s5p64x0_sysdev = { | ||
192 | .cls = &s5p64x0_sysclass, | ||
193 | }; | ||
194 | |||
195 | static int __init s5p64x0_core_init(void) | ||
196 | { | ||
197 | return sysdev_class_register(&s5p64x0_sysclass); | ||
198 | } | ||
199 | core_initcall(s5p64x0_core_init); | ||
200 | |||
201 | int __init s5p64x0_init(void) | ||
202 | { | ||
203 | printk(KERN_INFO "S5P64X0(S5P6440/S5P6450): Initializing architecture\n"); | ||
204 | |||
205 | /* set idle function */ | ||
206 | pm_idle = s5p64x0_idle; | ||
207 | |||
208 | return sysdev_register(&s5p64x0_sysdev); | ||
209 | } | ||