projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 2b12b5c4 CY |
1 | /* linux/arch/arm/mach-s5pv310/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/sched.h> | |
| 12 | #include <linux/sysdev.h> | |
| 13 | ||
| 14 | #include <asm/mach/map.h> | |
| 15 | #include <asm/mach/irq.h> | |
| 16 | ||
| 17 | #include <asm/proc-fns.h> | |
| 18 | ||
| 19 | #include <plat/cpu.h> | |
| 20 | #include <plat/clock.h> | |
| 21 | #include <plat/s5pv310.h> | |
| 22 | ||
| 23 | #include <mach/regs-irq.h> | |
| 24 | ||
| 25 | void __iomem *gic_cpu_base_addr; | |
| 26 | ||
| 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); | |
| 30 | ||
| 31 | /* Initial IO mappings */ | |
| 32 | static struct map_desc s5pv310_iodesc[] __initdata = { | |
| 33 | { | |
| 34 | .virtual = (unsigned long)S5P_VA_COREPERI_BASE, | |
| 35 | .pfn = __phys_to_pfn(S5PV310_PA_COREPERI), | |
| 36 | .length = SZ_8K, | |
| 37 | .type = MT_DEVICE, | |
| 38 | }, { | |
| 39 | .virtual = (unsigned long)S5P_VA_COMBINER_BASE, | |
| 40 | .pfn = __phys_to_pfn(S5PV310_PA_COMBINER), | |
| 41 | .length = SZ_4K, | |
| 42 | .type = MT_DEVICE, | |
| 43 | }, { | |
| 44 | .virtual = (unsigned long)S5P_VA_L2CC, | |
| 45 | .pfn = __phys_to_pfn(S5PV310_PA_L2CC), | |
| 46 | .length = SZ_4K, | |
| 47 | .type = MT_DEVICE, | |
| 48 | }, | |
| 49 | }; | |
| 50 | ||
| 51 | static void s5pv310_idle(void) | |
| 52 | { | |
| 53 | if (!need_resched()) | |
| 54 | cpu_do_idle(); | |
| 55 | ||
| 56 | local_irq_enable(); | |
| 57 | } | |
| 58 | ||
| 59 | /* s5pv310_map_io | |
| 60 | * | |
| 61 | * register the standard cpu IO areas | |
| 62 | */ | |
| 63 | void __init s5pv310_map_io(void) | |
| 64 | { | |
| 65 | iotable_init(s5pv310_iodesc, ARRAY_SIZE(s5pv310_iodesc)); | |
| 66 | } | |
| 67 | ||
| 68 | void __init s5pv310_init_clocks(int xtal) | |
| 69 | { | |
| 70 | printk(KERN_DEBUG "%s: initializing clocks\n", __func__); | |
| 71 | ||
| 72 | s3c24xx_register_baseclocks(xtal); | |
| 73 | s5p_register_clocks(xtal); | |
| 74 | s5pv310_register_clocks(); | |
| 75 | s5pv310_setup_clocks(); | |
| 76 | } | |
| 77 | ||
| 78 | void __init s5pv310_init_irq(void) | |
| 79 | { | |
| 80 | int irq; | |
| 81 | ||
| 82 | gic_cpu_base_addr = S5P_VA_GIC_CPU; | |
| 83 | gic_dist_init(0, S5P_VA_GIC_DIST, IRQ_LOCALTIMER); | |
| 84 | gic_cpu_init(0, S5P_VA_GIC_CPU); | |
| 85 | ||
| 86 | for (irq = 0; irq < MAX_COMBINER_NR; irq++) { | |
| 87 | combiner_init(irq, (void __iomem *)S5P_VA_COMBINER(irq), | |
| 88 | COMBINER_IRQ(irq, 0)); | |
| 89 | combiner_cascade_irq(irq, IRQ_SPI(irq)); | |
| 90 | } | |
| 91 | ||
| 92 | /* The parameters of s5p_init_irq() are for VIC init. | |
| 93 | * Theses parameters should be NULL and 0 because S5PV310 | |
| 94 | * uses GIC instead of VIC. | |
| 95 | */ | |
| 96 | s5p_init_irq(NULL, 0); | |
| 97 | } | |
| 98 | ||
| 99 | struct sysdev_class s5pv310_sysclass = { | |
| 100 | .name = "s5pv310-core", | |
| 101 | }; | |
| 102 | ||
| 103 | static struct sys_device s5pv310_sysdev = { | |
| 104 | .cls = &s5pv310_sysclass, | |
| 105 | }; | |
| 106 | ||
| 107 | static int __init s5pv310_core_init(void) | |
| 108 | { | |
| 109 | return sysdev_class_register(&s5pv310_sysclass); | |
| 110 | } | |
| 111 | ||
| 112 | core_initcall(s5pv310_core_init); | |
| 113 | ||
| 114 | int __init s5pv310_init(void) | |
| 115 | { | |
| 116 | printk(KERN_INFO "S5PV310: Initializing architecture\n"); | |
| 117 | ||
| 118 | /* set idle function */ | |
| 119 | pm_idle = s5pv310_idle; | |
| 120 | ||
| 121 | return sysdev_register(&s5pv310_sysdev); | |
| 122 | } |