1 /* linux/arch/arm/mach-s5pv310/cpu.c
3 * Copyright (c) 2010 Samsung Electronics Co., Ltd.
4 * http://www.samsung.com/
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.
11 #include <linux/sched.h>
12 #include <linux/sysdev.h>
14 #include <asm/mach/map.h>
15 #include <asm/mach/irq.h>
17 #include <asm/proc-fns.h>
18 #include <asm/hardware/cache-l2x0.h>
21 #include <plat/clock.h>
22 #include <plat/s5pv310.h>
23 #include <plat/sdhci.h>
25 #include <mach/regs-irq.h>
27 extern int combiner_init(unsigned int combiner_nr
, void __iomem
*base
,
28 unsigned int irq_start
);
29 extern void combiner_cascade_irq(unsigned int combiner_nr
, unsigned int irq
);
31 /* Initial IO mappings */
32 static struct map_desc s5pv310_iodesc
[] __initdata
= {
34 .virtual = (unsigned long)S5P_VA_SYSRAM
,
35 .pfn
= __phys_to_pfn(S5PV310_PA_SYSRAM
),
39 .virtual = (unsigned long)S5P_VA_CMU
,
40 .pfn
= __phys_to_pfn(S5PV310_PA_CMU
),
44 .virtual = (unsigned long)S5P_VA_COMBINER_BASE
,
45 .pfn
= __phys_to_pfn(S5PV310_PA_COMBINER
),
49 .virtual = (unsigned long)S5P_VA_COREPERI_BASE
,
50 .pfn
= __phys_to_pfn(S5PV310_PA_COREPERI
),
54 .virtual = (unsigned long)S5P_VA_L2CC
,
55 .pfn
= __phys_to_pfn(S5PV310_PA_L2CC
),
59 .virtual = (unsigned long)S5P_VA_GPIO1
,
60 .pfn
= __phys_to_pfn(S5PV310_PA_GPIO1
),
64 .virtual = (unsigned long)S5P_VA_GPIO2
,
65 .pfn
= __phys_to_pfn(S5PV310_PA_GPIO2
),
69 .virtual = (unsigned long)S5P_VA_GPIO3
,
70 .pfn
= __phys_to_pfn(S5PV310_PA_GPIO3
),
74 .virtual = (unsigned long)S3C_VA_UART
,
75 .pfn
= __phys_to_pfn(S3C_PA_UART
),
79 .virtual = (unsigned long)S5P_VA_SROMC
,
80 .pfn
= __phys_to_pfn(S5PV310_PA_SROMC
),
86 static void s5pv310_idle(void)
96 * register the standard cpu IO areas
98 void __init
s5pv310_map_io(void)
100 iotable_init(s5pv310_iodesc
, ARRAY_SIZE(s5pv310_iodesc
));
102 /* initialize device information early */
103 s5pv310_default_sdhci0();
104 s5pv310_default_sdhci1();
105 s5pv310_default_sdhci2();
106 s5pv310_default_sdhci3();
109 void __init
s5pv310_init_clocks(int xtal
)
111 printk(KERN_DEBUG
"%s: initializing clocks\n", __func__
);
113 s3c24xx_register_baseclocks(xtal
);
114 s5p_register_clocks(xtal
);
115 s5pv310_register_clocks();
116 s5pv310_setup_clocks();
119 void __init
s5pv310_init_irq(void)
123 gic_init(0, IRQ_LOCALTIMER
, S5P_VA_GIC_DIST
, S5P_VA_GIC_CPU
);
125 for (irq
= 0; irq
< MAX_COMBINER_NR
; irq
++) {
126 combiner_init(irq
, (void __iomem
*)S5P_VA_COMBINER(irq
),
127 COMBINER_IRQ(irq
, 0));
128 combiner_cascade_irq(irq
, IRQ_SPI(irq
));
131 /* The parameters of s5p_init_irq() are for VIC init.
132 * Theses parameters should be NULL and 0 because S5PV310
133 * uses GIC instead of VIC.
135 s5p_init_irq(NULL
, 0);
138 struct sysdev_class s5pv310_sysclass
= {
139 .name
= "s5pv310-core",
142 static struct sys_device s5pv310_sysdev
= {
143 .cls
= &s5pv310_sysclass
,
146 static int __init
s5pv310_core_init(void)
148 return sysdev_class_register(&s5pv310_sysclass
);
151 core_initcall(s5pv310_core_init
);
153 #ifdef CONFIG_CACHE_L2X0
154 static int __init
s5pv310_l2x0_cache_init(void)
156 /* TAG, Data Latency Control: 2cycle */
157 __raw_writel(0x110, S5P_VA_L2CC
+ L2X0_TAG_LATENCY_CTRL
);
158 __raw_writel(0x110, S5P_VA_L2CC
+ L2X0_DATA_LATENCY_CTRL
);
160 /* L2X0 Prefetch Control */
161 __raw_writel(0x30000007, S5P_VA_L2CC
+ L2X0_PREFETCH_CTRL
);
163 /* L2X0 Power Control */
164 __raw_writel(L2X0_DYNAMIC_CLK_GATING_EN
| L2X0_STNDBY_MODE_EN
,
165 S5P_VA_L2CC
+ L2X0_POWER_CTRL
);
167 l2x0_init(S5P_VA_L2CC
, 0x7C070001, 0xC200ffff);
172 early_initcall(s5pv310_l2x0_cache_init
);
175 int __init
s5pv310_init(void)
177 printk(KERN_INFO
"S5PV310: Initializing architecture\n");
179 /* set idle function */
180 pm_idle
= s5pv310_idle
;
182 return sysdev_register(&s5pv310_sysdev
);