1/* linux/arch/arm/mach-s5p6442/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/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 28#include <asm/proc-fns.h> 29 30#include <mach/hardware.h> 31#include <mach/map.h> 32#include <asm/irq.h> 33 34#include <plat/regs-serial.h> 35#include <mach/regs-clock.h> 36 37#include <plat/cpu.h> 38#include <plat/devs.h> 39#include <plat/clock.h> 40#include <plat/s5p6442.h> 41 42/* Initial IO mappings */ 43 44static struct map_desc s5p6442_iodesc[] __initdata = { 45 { 46 .virtual = (unsigned long)S5P_VA_SYSTIMER, 47 .pfn = __phys_to_pfn(S5P6442_PA_SYSTIMER), 48 .length = SZ_16K, 49 .type = MT_DEVICE, 50 }, { 51 .virtual = (unsigned long)VA_VIC2, 52 .pfn = __phys_to_pfn(S5P6442_PA_VIC2), 53 .length = SZ_16K, 54 .type = MT_DEVICE, 55 } 56}; 57 58static void s5p6442_idle(void) 59{ 60 if (!need_resched()) 61 cpu_do_idle(); 62 63 local_irq_enable(); 64} 65 66/* s5p6442_map_io 67 * 68 * register the standard cpu IO areas 69*/ 70 71void __init s5p6442_map_io(void) 72{ 73 iotable_init(s5p6442_iodesc, ARRAY_SIZE(s5p6442_iodesc)); 74} 75 76void __init s5p6442_init_clocks(int xtal) 77{ 78 printk(KERN_DEBUG "%s: initializing clocks\n", __func__); 79 80 s3c24xx_register_baseclocks(xtal); 81 s5p_register_clocks(xtal); 82 s5p6442_register_clocks(); 83 s5p6442_setup_clocks(); 84} 85 86void __init s5p6442_init_irq(void) 87{ 88 /* S5P6442 supports 3 VIC */ 89 u32 vic[3]; 90 91 /* VIC0, VIC1, and VIC2: some interrupt reserved */ 92 vic[0] = 0x7fefffff; 93 vic[1] = 0X7f389c81; 94 vic[2] = 0X1bbbcfff; 95 96 s5p_init_irq(vic, ARRAY_SIZE(vic)); 97} 98 99struct sysdev_class s5p6442_sysclass = { 100 .name = "s5p6442-core", 101}; 102 103static struct sys_device s5p6442_sysdev = { 104 .cls = &s5p6442_sysclass, 105}; 106 107static int __init s5p6442_core_init(void) 108{ 109 return sysdev_class_register(&s5p6442_sysclass); 110} 111 112core_initcall(s5p6442_core_init); 113 114int __init s5p6442_init(void) 115{ 116 printk(KERN_INFO "S5P6442: Initializing architecture\n"); 117 118 /* set idle function */ 119 pm_idle = s5p6442_idle; 120 121 return sysdev_register(&s5p6442_sysdev); 122} 123