mirror of https://gitee.com/openkylin/linux.git
127 lines
2.6 KiB
C
127 lines
2.6 KiB
C
/* linux/arch/arm/mach-s5pv210/cpu.c
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*
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* Copyright (c) 2010 Samsung Electronics Co., Ltd.
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* http://www.samsung.com/
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <linux/list.h>
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#include <linux/timer.h>
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/clk.h>
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#include <linux/io.h>
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#include <linux/sysdev.h>
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#include <linux/platform_device.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/map.h>
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#include <asm/mach/irq.h>
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#include <asm/proc-fns.h>
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#include <mach/map.h>
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#include <mach/regs-clock.h>
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#include <plat/cpu.h>
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#include <plat/devs.h>
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#include <plat/clock.h>
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#include <plat/s5pv210.h>
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/* Initial IO mappings */
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static struct map_desc s5pv210_iodesc[] __initdata = {
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{
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.virtual = (unsigned long)S5P_VA_SYSTIMER,
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.pfn = __phys_to_pfn(S5PV210_PA_SYSTIMER),
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.length = SZ_1M,
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.type = MT_DEVICE,
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}, {
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.virtual = (unsigned long)VA_VIC2,
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.pfn = __phys_to_pfn(S5PV210_PA_VIC2),
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.length = SZ_16K,
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.type = MT_DEVICE,
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}, {
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.virtual = (unsigned long)VA_VIC3,
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.pfn = __phys_to_pfn(S5PV210_PA_VIC3),
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.length = SZ_16K,
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.type = MT_DEVICE,
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}, {
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.virtual = (unsigned long)S5P_VA_SROMC,
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.pfn = __phys_to_pfn(S5PV210_PA_SROMC),
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.length = SZ_4K,
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.type = MT_DEVICE,
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}
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};
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static void s5pv210_idle(void)
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{
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if (!need_resched())
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cpu_do_idle();
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local_irq_enable();
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}
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/* s5pv210_map_io
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*
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* register the standard cpu IO areas
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*/
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void __init s5pv210_map_io(void)
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{
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iotable_init(s5pv210_iodesc, ARRAY_SIZE(s5pv210_iodesc));
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}
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void __init s5pv210_init_clocks(int xtal)
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{
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printk(KERN_DEBUG "%s: initializing clocks\n", __func__);
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s3c24xx_register_baseclocks(xtal);
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s5p_register_clocks(xtal);
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s5pv210_register_clocks();
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s5pv210_setup_clocks();
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}
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void __init s5pv210_init_irq(void)
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{
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u32 vic[4]; /* S5PV210 supports 4 VIC */
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/* All the VICs are fully populated. */
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vic[0] = ~0;
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vic[1] = ~0;
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vic[2] = ~0;
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vic[3] = ~0;
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s5p_init_irq(vic, ARRAY_SIZE(vic));
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}
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static struct sysdev_class s5pv210_sysclass = {
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.name = "s5pv210-core",
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};
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static struct sys_device s5pv210_sysdev = {
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.cls = &s5pv210_sysclass,
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};
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static int __init s5pv210_core_init(void)
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{
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return sysdev_class_register(&s5pv210_sysclass);
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}
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core_initcall(s5pv210_core_init);
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int __init s5pv210_init(void)
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{
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printk(KERN_INFO "S5PV210: Initializing architecture\n");
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/* set idle function */
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pm_idle = s5pv210_idle;
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return sysdev_register(&s5pv210_sysdev);
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}
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