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>
20 #include <plat/clock.h>
21 #include <plat/s5pv310.h>
23 #include <mach/regs-irq.h>
25 void __iomem
*gic_cpu_base_addr
;
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_COREPERI_BASE
,
35 .pfn
= __phys_to_pfn(S5PV310_PA_COREPERI
),
39 .virtual = (unsigned long)S5P_VA_COMBINER_BASE
,
40 .pfn
= __phys_to_pfn(S5PV310_PA_COMBINER
),
44 .virtual = (unsigned long)S5P_VA_L2CC
,
45 .pfn
= __phys_to_pfn(S5PV310_PA_L2CC
),
49 .virtual = (unsigned long)S5P_VA_SYSRAM
,
50 .pfn
= __phys_to_pfn(S5PV310_PA_SYSRAM
),
54 .virtual = (unsigned long)S5P_VA_CMU
,
55 .pfn
= __phys_to_pfn(S5PV310_PA_CMU
),
61 static void s5pv310_idle(void)
71 * register the standard cpu IO areas
73 void __init
s5pv310_map_io(void)
75 iotable_init(s5pv310_iodesc
, ARRAY_SIZE(s5pv310_iodesc
));
78 void __init
s5pv310_init_clocks(int xtal
)
80 printk(KERN_DEBUG
"%s: initializing clocks\n", __func__
);
82 s3c24xx_register_baseclocks(xtal
);
83 s5p_register_clocks(xtal
);
84 s5pv310_register_clocks();
85 s5pv310_setup_clocks();
88 void __init
s5pv310_init_irq(void)
92 gic_cpu_base_addr
= S5P_VA_GIC_CPU
;
93 gic_dist_init(0, S5P_VA_GIC_DIST
, IRQ_LOCALTIMER
);
94 gic_cpu_init(0, S5P_VA_GIC_CPU
);
96 for (irq
= 0; irq
< MAX_COMBINER_NR
; irq
++) {
97 combiner_init(irq
, (void __iomem
*)S5P_VA_COMBINER(irq
),
98 COMBINER_IRQ(irq
, 0));
99 combiner_cascade_irq(irq
, IRQ_SPI(irq
));
102 /* The parameters of s5p_init_irq() are for VIC init.
103 * Theses parameters should be NULL and 0 because S5PV310
104 * uses GIC instead of VIC.
106 s5p_init_irq(NULL
, 0);
109 struct sysdev_class s5pv310_sysclass
= {
110 .name
= "s5pv310-core",
113 static struct sys_device s5pv310_sysdev
= {
114 .cls
= &s5pv310_sysclass
,
117 static int __init
s5pv310_core_init(void)
119 return sysdev_class_register(&s5pv310_sysclass
);
122 core_initcall(s5pv310_core_init
);
124 int __init
s5pv310_init(void)
126 printk(KERN_INFO
"S5PV310: Initializing architecture\n");
128 /* set idle function */
129 pm_idle
= s5pv310_idle
;
131 return sysdev_register(&s5pv310_sysdev
);