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2b12b5c4 CY |
1 | /* linux/arch/arm/mach-s5pv310/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/sched.h> | |
12 | #include <linux/sysdev.h> | |
13 | ||
14 | #include <asm/mach/map.h> | |
15 | #include <asm/mach/irq.h> | |
16 | ||
17 | #include <asm/proc-fns.h> | |
1cf0eb79 | 18 | #include <asm/hardware/cache-l2x0.h> |
2b12b5c4 CY |
19 | |
20 | #include <plat/cpu.h> | |
21 | #include <plat/clock.h> | |
22 | #include <plat/s5pv310.h> | |
1036c3ab | 23 | #include <plat/sdhci.h> |
2b12b5c4 CY |
24 | |
25 | #include <mach/regs-irq.h> | |
26 | ||
27 | void __iomem *gic_cpu_base_addr; | |
28 | ||
29 | extern int combiner_init(unsigned int combiner_nr, void __iomem *base, | |
30 | unsigned int irq_start); | |
31 | extern void combiner_cascade_irq(unsigned int combiner_nr, unsigned int irq); | |
32 | ||
33 | /* Initial IO mappings */ | |
34 | static struct map_desc s5pv310_iodesc[] __initdata = { | |
35 | { | |
19a2c065 KK |
36 | .virtual = (unsigned long)S5P_VA_SYSRAM, |
37 | .pfn = __phys_to_pfn(S5PV310_PA_SYSRAM), | |
38 | .length = SZ_4K, | |
39 | .type = MT_DEVICE, | |
40 | }, { | |
41 | .virtual = (unsigned long)S5P_VA_CMU, | |
42 | .pfn = __phys_to_pfn(S5PV310_PA_CMU), | |
43 | .length = SZ_128K, | |
2b12b5c4 CY |
44 | .type = MT_DEVICE, |
45 | }, { | |
46 | .virtual = (unsigned long)S5P_VA_COMBINER_BASE, | |
47 | .pfn = __phys_to_pfn(S5PV310_PA_COMBINER), | |
48 | .length = SZ_4K, | |
49 | .type = MT_DEVICE, | |
19a2c065 KK |
50 | }, { |
51 | .virtual = (unsigned long)S5P_VA_COREPERI_BASE, | |
52 | .pfn = __phys_to_pfn(S5PV310_PA_COREPERI), | |
53 | .length = SZ_8K, | |
54 | .type = MT_DEVICE, | |
2b12b5c4 CY |
55 | }, { |
56 | .virtual = (unsigned long)S5P_VA_L2CC, | |
57 | .pfn = __phys_to_pfn(S5PV310_PA_L2CC), | |
58 | .length = SZ_4K, | |
59 | .type = MT_DEVICE, | |
766211e7 | 60 | }, { |
37ea63b1 | 61 | .virtual = (unsigned long)S5P_VA_GPIO1, |
fe0cdec8 | 62 | .pfn = __phys_to_pfn(S5PV310_PA_GPIO1), |
766211e7 CY |
63 | .length = SZ_4K, |
64 | .type = MT_DEVICE, | |
37ea63b1 JL |
65 | }, { |
66 | .virtual = (unsigned long)S5P_VA_GPIO2, | |
67 | .pfn = __phys_to_pfn(S5PV310_PA_GPIO2), | |
68 | .length = SZ_4K, | |
69 | .type = MT_DEVICE, | |
70 | }, { | |
71 | .virtual = (unsigned long)S5P_VA_GPIO3, | |
72 | .pfn = __phys_to_pfn(S5PV310_PA_GPIO3), | |
73 | .length = SZ_256, | |
74 | .type = MT_DEVICE, | |
c598c47d | 75 | }, { |
19a2c065 KK |
76 | .virtual = (unsigned long)S3C_VA_UART, |
77 | .pfn = __phys_to_pfn(S3C_PA_UART), | |
78 | .length = SZ_512K, | |
c598c47d | 79 | .type = MT_DEVICE, |
09596ba0 DM |
80 | }, { |
81 | .virtual = (unsigned long)S5P_VA_SROMC, | |
82 | .pfn = __phys_to_pfn(S5PV310_PA_SROMC), | |
83 | .length = SZ_4K, | |
84 | .type = MT_DEVICE, | |
766211e7 | 85 | }, |
2b12b5c4 CY |
86 | }; |
87 | ||
88 | static void s5pv310_idle(void) | |
89 | { | |
90 | if (!need_resched()) | |
91 | cpu_do_idle(); | |
92 | ||
93 | local_irq_enable(); | |
94 | } | |
95 | ||
96 | /* s5pv310_map_io | |
97 | * | |
98 | * register the standard cpu IO areas | |
99 | */ | |
100 | void __init s5pv310_map_io(void) | |
101 | { | |
102 | iotable_init(s5pv310_iodesc, ARRAY_SIZE(s5pv310_iodesc)); | |
1036c3ab HL |
103 | |
104 | /* initialize device information early */ | |
105 | s5pv310_default_sdhci0(); | |
106 | s5pv310_default_sdhci1(); | |
107 | s5pv310_default_sdhci2(); | |
108 | s5pv310_default_sdhci3(); | |
2b12b5c4 CY |
109 | } |
110 | ||
111 | void __init s5pv310_init_clocks(int xtal) | |
112 | { | |
113 | printk(KERN_DEBUG "%s: initializing clocks\n", __func__); | |
114 | ||
115 | s3c24xx_register_baseclocks(xtal); | |
116 | s5p_register_clocks(xtal); | |
117 | s5pv310_register_clocks(); | |
118 | s5pv310_setup_clocks(); | |
119 | } | |
120 | ||
121 | void __init s5pv310_init_irq(void) | |
122 | { | |
123 | int irq; | |
124 | ||
125 | gic_cpu_base_addr = S5P_VA_GIC_CPU; | |
126 | gic_dist_init(0, S5P_VA_GIC_DIST, IRQ_LOCALTIMER); | |
127 | gic_cpu_init(0, S5P_VA_GIC_CPU); | |
128 | ||
129 | for (irq = 0; irq < MAX_COMBINER_NR; irq++) { | |
130 | combiner_init(irq, (void __iomem *)S5P_VA_COMBINER(irq), | |
131 | COMBINER_IRQ(irq, 0)); | |
132 | combiner_cascade_irq(irq, IRQ_SPI(irq)); | |
133 | } | |
134 | ||
135 | /* The parameters of s5p_init_irq() are for VIC init. | |
136 | * Theses parameters should be NULL and 0 because S5PV310 | |
137 | * uses GIC instead of VIC. | |
138 | */ | |
139 | s5p_init_irq(NULL, 0); | |
140 | } | |
141 | ||
142 | struct sysdev_class s5pv310_sysclass = { | |
143 | .name = "s5pv310-core", | |
144 | }; | |
145 | ||
146 | static struct sys_device s5pv310_sysdev = { | |
147 | .cls = &s5pv310_sysclass, | |
148 | }; | |
149 | ||
150 | static int __init s5pv310_core_init(void) | |
151 | { | |
152 | return sysdev_class_register(&s5pv310_sysclass); | |
153 | } | |
154 | ||
155 | core_initcall(s5pv310_core_init); | |
156 | ||
1cf0eb79 KP |
157 | #ifdef CONFIG_CACHE_L2X0 |
158 | static int __init s5pv310_l2x0_cache_init(void) | |
159 | { | |
160 | /* TAG, Data Latency Control: 2cycle */ | |
161 | __raw_writel(0x110, S5P_VA_L2CC + L2X0_TAG_LATENCY_CTRL); | |
162 | __raw_writel(0x110, S5P_VA_L2CC + L2X0_DATA_LATENCY_CTRL); | |
163 | ||
164 | /* L2X0 Prefetch Control */ | |
165 | __raw_writel(0x30000007, S5P_VA_L2CC + L2X0_PREFETCH_CTRL); | |
166 | ||
167 | /* L2X0 Power Control */ | |
168 | __raw_writel(L2X0_DYNAMIC_CLK_GATING_EN | L2X0_STNDBY_MODE_EN, | |
169 | S5P_VA_L2CC + L2X0_POWER_CTRL); | |
170 | ||
171 | l2x0_init(S5P_VA_L2CC, 0x7C070001, 0xC200ffff); | |
172 | ||
173 | return 0; | |
174 | } | |
175 | ||
176 | early_initcall(s5pv310_l2x0_cache_init); | |
177 | #endif | |
178 | ||
2b12b5c4 CY |
179 | int __init s5pv310_init(void) |
180 | { | |
181 | printk(KERN_INFO "S5PV310: Initializing architecture\n"); | |
182 | ||
183 | /* set idle function */ | |
184 | pm_idle = s5pv310_idle; | |
185 | ||
186 | return sysdev_register(&s5pv310_sysdev); | |
187 | } |