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 void __iomem
*gic_cpu_base_addr
;
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
);
33 /* Initial IO mappings */
34 static struct map_desc s5pv310_iodesc
[] __initdata
= {
36 .virtual = (unsigned long)S5P_VA_SYSRAM
,
37 .pfn
= __phys_to_pfn(S5PV310_PA_SYSRAM
),
41 .virtual = (unsigned long)S5P_VA_CMU
,
42 .pfn
= __phys_to_pfn(S5PV310_PA_CMU
),
46 .virtual = (unsigned long)S5P_VA_COMBINER_BASE
,
47 .pfn
= __phys_to_pfn(S5PV310_PA_COMBINER
),
51 .virtual = (unsigned long)S5P_VA_COREPERI_BASE
,
52 .pfn
= __phys_to_pfn(S5PV310_PA_COREPERI
),
56 .virtual = (unsigned long)S5P_VA_L2CC
,
57 .pfn
= __phys_to_pfn(S5PV310_PA_L2CC
),
61 .virtual = (unsigned long)S5P_VA_GPIO1
,
62 .pfn
= __phys_to_pfn(S5PV310_PA_GPIO1
),
66 .virtual = (unsigned long)S5P_VA_GPIO2
,
67 .pfn
= __phys_to_pfn(S5PV310_PA_GPIO2
),
71 .virtual = (unsigned long)S5P_VA_GPIO3
,
72 .pfn
= __phys_to_pfn(S5PV310_PA_GPIO3
),
76 .virtual = (unsigned long)S3C_VA_UART
,
77 .pfn
= __phys_to_pfn(S3C_PA_UART
),
81 .virtual = (unsigned long)S5P_VA_SROMC
,
82 .pfn
= __phys_to_pfn(S5PV310_PA_SROMC
),
88 static void s5pv310_idle(void)
98 * register the standard cpu IO areas
100 void __init
s5pv310_map_io(void)
102 iotable_init(s5pv310_iodesc
, ARRAY_SIZE(s5pv310_iodesc
));
104 /* initialize device information early */
105 s5pv310_default_sdhci0();
106 s5pv310_default_sdhci1();
107 s5pv310_default_sdhci2();
108 s5pv310_default_sdhci3();
111 void __init
s5pv310_init_clocks(int xtal
)
113 printk(KERN_DEBUG
"%s: initializing clocks\n", __func__
);
115 s3c24xx_register_baseclocks(xtal
);
116 s5p_register_clocks(xtal
);
117 s5pv310_register_clocks();
118 s5pv310_setup_clocks();
121 void __init
s5pv310_init_irq(void)
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
);
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
));
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.
139 s5p_init_irq(NULL
, 0);
142 struct sysdev_class s5pv310_sysclass
= {
143 .name
= "s5pv310-core",
146 static struct sys_device s5pv310_sysdev
= {
147 .cls
= &s5pv310_sysclass
,
150 static int __init
s5pv310_core_init(void)
152 return sysdev_class_register(&s5pv310_sysclass
);
155 core_initcall(s5pv310_core_init
);
157 #ifdef CONFIG_CACHE_L2X0
158 static int __init
s5pv310_l2x0_cache_init(void)
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
);
164 /* L2X0 Prefetch Control */
165 __raw_writel(0x30000007, S5P_VA_L2CC
+ L2X0_PREFETCH_CTRL
);
167 /* L2X0 Power Control */
168 __raw_writel(L2X0_DYNAMIC_CLK_GATING_EN
| L2X0_STNDBY_MODE_EN
,
169 S5P_VA_L2CC
+ L2X0_POWER_CTRL
);
171 l2x0_init(S5P_VA_L2CC
, 0x7C070001, 0xC200ffff);
176 early_initcall(s5pv310_l2x0_cache_init
);
179 int __init
s5pv310_init(void)
181 printk(KERN_INFO
"S5PV310: Initializing architecture\n");
183 /* set idle function */
184 pm_idle
= s5pv310_idle
;
186 return sysdev_register(&s5pv310_sysdev
);