xref: /linux/arch/x86/kernel/x86_init.c (revision 26b0d14106954ae46d2f4f7eec3481828a210f7d) 
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 void __init x86_init_pgd_noop(pgd_t *unused) { }
30 int __init iommu_init_noop(void) { return 0; }
31 void iommu_shutdown_noop(void) { }
32 void wallclock_init_noop(void) { }
33 
34 /*
35  * The platform setup functions are preset with the default functions
36  * for standard PC hardware.
37  */
38 struct x86_init_ops x86_init __initdata = {
39 
40 	.resources = {
41 		.probe_roms		= probe_roms,
42 		.reserve_resources	= reserve_standard_io_resources,
43 		.memory_setup		= default_machine_specific_memory_setup,
44 	},
45 
46 	.mpparse = {
47 		.mpc_record		= x86_init_uint_noop,
48 		.setup_ioapic_ids	= x86_init_noop,
49 		.mpc_apic_id		= default_mpc_apic_id,
50 		.smp_read_mpc_oem	= default_smp_read_mpc_oem,
51 		.mpc_oem_bus_info	= default_mpc_oem_bus_info,
52 		.find_smp_config	= default_find_smp_config,
53 		.get_smp_config		= default_get_smp_config,
54 	},
55 
56 	.irqs = {
57 		.pre_vector_init	= init_ISA_irqs,
58 		.intr_init		= native_init_IRQ,
59 		.trap_init		= x86_init_noop,
60 	},
61 
62 	.oem = {
63 		.arch_setup		= x86_init_noop,
64 		.banner			= default_banner,
65 	},
66 
67 	.mapping = {
68 		.pagetable_reserve		= native_pagetable_reserve,
69 	},
70 
71 	.paging = {
72 		.pagetable_setup_start	= native_pagetable_setup_start,
73 		.pagetable_setup_done	= native_pagetable_setup_done,
74 	},
75 
76 	.timers = {
77 		.setup_percpu_clockev	= setup_boot_APIC_clock,
78 		.tsc_pre_init		= x86_init_noop,
79 		.timer_init		= hpet_time_init,
80 		.wallclock_init		= x86_init_noop,
81 	},
82 
83 	.iommu = {
84 		.iommu_init		= iommu_init_noop,
85 	},
86 
87 	.pci = {
88 		.init			= x86_default_pci_init,
89 		.init_irq		= x86_default_pci_init_irq,
90 		.fixup_irqs		= x86_default_pci_fixup_irqs,
91 	},
92 };
93 
94 struct x86_cpuinit_ops x86_cpuinit __cpuinitdata = {
95 	.early_percpu_clock_init	= x86_init_noop,
96 	.setup_percpu_clockev		= setup_secondary_APIC_clock,
97 };
98 
99 static void default_nmi_init(void) { };
100 static int default_i8042_detect(void) { return 1; };
101 
102 struct x86_platform_ops x86_platform = {
103 	.calibrate_tsc			= native_calibrate_tsc,
104 	.wallclock_init			= wallclock_init_noop,
105 	.get_wallclock			= mach_get_cmos_time,
106 	.set_wallclock			= mach_set_rtc_mmss,
107 	.iommu_shutdown			= iommu_shutdown_noop,
108 	.is_untracked_pat_range		= is_ISA_range,
109 	.nmi_init			= default_nmi_init,
110 	.get_nmi_reason			= default_get_nmi_reason,
111 	.i8042_detect			= default_i8042_detect,
112 	.save_sched_clock_state 	= tsc_save_sched_clock_state,
113 	.restore_sched_clock_state 	= tsc_restore_sched_clock_state,
114 };
115 
116 EXPORT_SYMBOL_GPL(x86_platform);
117 struct x86_msi_ops x86_msi = {
118 	.setup_msi_irqs = native_setup_msi_irqs,
119 	.teardown_msi_irq = native_teardown_msi_irq,
120 	.teardown_msi_irqs = default_teardown_msi_irqs,
121 	.restore_msi_irqs = default_restore_msi_irqs,
122 };
123 
124 struct x86_io_apic_ops x86_io_apic_ops = {
125 	.init	= native_io_apic_init_mappings,
126 	.read	= native_io_apic_read,
127 	.write	= native_io_apic_write,
128 	.modify	= native_io_apic_modify,
129 };
130