xref: /linux/arch/x86/kernel/x86_init.c (revision 0d456bad36d42d16022be045c8a53ddbb59ee478) 
1 /*
2  * Copyright (C) 2009 Thomas Gleixner <tglx@linutronix.de>
3  *
4  *  For licencing details see kernel-base/COPYING
5  */
6 #include <linux/init.h>
7 #include <linux/ioport.h>
8 #include <linux/module.h>
9 #include <linux/pci.h>
10 
11 #include <asm/bios_ebda.h>
12 #include <asm/paravirt.h>
13 #include <asm/pci_x86.h>
14 #include <asm/pci.h>
15 #include <asm/mpspec.h>
16 #include <asm/setup.h>
17 #include <asm/apic.h>
18 #include <asm/e820.h>
19 #include <asm/time.h>
20 #include <asm/irq.h>
21 #include <asm/io_apic.h>
22 #include <asm/pat.h>
23 #include <asm/tsc.h>
24 #include <asm/iommu.h>
25 #include <asm/mach_traps.h>
26 
27 void __cpuinit x86_init_noop(void) { }
28 void __init x86_init_uint_noop(unsigned int unused) { }
29 int __init iommu_init_noop(void) { return 0; }
30 void iommu_shutdown_noop(void) { }
31 
32 /*
33  * The platform setup functions are preset with the default functions
34  * for standard PC hardware.
35  */
36 struct x86_init_ops x86_init __initdata = {
37 
38 	.resources = {
39 		.probe_roms		= probe_roms,
40 		.reserve_resources	= reserve_standard_io_resources,
41 		.memory_setup		= default_machine_specific_memory_setup,
42 	},
43 
44 	.mpparse = {
45 		.mpc_record		= x86_init_uint_noop,
46 		.setup_ioapic_ids	= x86_init_noop,
47 		.mpc_apic_id		= default_mpc_apic_id,
48 		.smp_read_mpc_oem	= default_smp_read_mpc_oem,
49 		.mpc_oem_bus_info	= default_mpc_oem_bus_info,
50 		.find_smp_config	= default_find_smp_config,
51 		.get_smp_config		= default_get_smp_config,
52 	},
53 
54 	.irqs = {
55 		.pre_vector_init	= init_ISA_irqs,
56 		.intr_init		= native_init_IRQ,
57 		.trap_init		= x86_init_noop,
58 	},
59 
60 	.oem = {
61 		.arch_setup		= x86_init_noop,
62 		.banner			= default_banner,
63 	},
64 
65 	.mapping = {
66 		.pagetable_reserve		= native_pagetable_reserve,
67 	},
68 
69 	.paging = {
70 		.pagetable_init		= native_pagetable_init,
71 	},
72 
73 	.timers = {
74 		.setup_percpu_clockev	= setup_boot_APIC_clock,
75 		.tsc_pre_init		= x86_init_noop,
76 		.timer_init		= hpet_time_init,
77 		.wallclock_init		= x86_init_noop,
78 	},
79 
80 	.iommu = {
81 		.iommu_init		= iommu_init_noop,
82 	},
83 
84 	.pci = {
85 		.init			= x86_default_pci_init,
86 		.init_irq		= x86_default_pci_init_irq,
87 		.fixup_irqs		= x86_default_pci_fixup_irqs,
88 	},
89 };
90 
91 struct x86_cpuinit_ops x86_cpuinit __cpuinitdata = {
92 	.early_percpu_clock_init	= x86_init_noop,
93 	.setup_percpu_clockev		= setup_secondary_APIC_clock,
94 };
95 
96 static void default_nmi_init(void) { };
97 static int default_i8042_detect(void) { return 1; };
98 
99 struct x86_platform_ops x86_platform = {
100 	.calibrate_tsc			= native_calibrate_tsc,
101 	.get_wallclock			= mach_get_cmos_time,
102 	.set_wallclock			= mach_set_rtc_mmss,
103 	.iommu_shutdown			= iommu_shutdown_noop,
104 	.is_untracked_pat_range		= is_ISA_range,
105 	.nmi_init			= default_nmi_init,
106 	.get_nmi_reason			= default_get_nmi_reason,
107 	.i8042_detect			= default_i8042_detect,
108 	.save_sched_clock_state 	= tsc_save_sched_clock_state,
109 	.restore_sched_clock_state 	= tsc_restore_sched_clock_state,
110 };
111 
112 EXPORT_SYMBOL_GPL(x86_platform);
113 struct x86_msi_ops x86_msi = {
114 	.setup_msi_irqs = native_setup_msi_irqs,
115 	.teardown_msi_irq = native_teardown_msi_irq,
116 	.teardown_msi_irqs = default_teardown_msi_irqs,
117 	.restore_msi_irqs = default_restore_msi_irqs,
118 };
119 
120 struct x86_io_apic_ops x86_io_apic_ops = {
121 	.init	= native_io_apic_init_mappings,
122 	.read	= native_io_apic_read,
123 	.write	= native_io_apic_write,
124 	.modify	= native_io_apic_modify,
125 };
126