xref: /linux/arch/x86/kernel/x86_init.c (revision f2ee442115c9b6219083c019939a9cc0c9abb2f8) 
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/pat.h>
22 #include <asm/tsc.h>
23 #include <asm/iommu.h>
24 
25 void __cpuinit x86_init_noop(void) { }
26 void __init x86_init_uint_noop(unsigned int unused) { }
27 void __init x86_init_pgd_noop(pgd_t *unused) { }
28 int __init iommu_init_noop(void) { return 0; }
29 void iommu_shutdown_noop(void) { }
30 
31 /*
32  * The platform setup functions are preset with the default functions
33  * for standard PC hardware.
34  */
35 struct x86_init_ops x86_init __initdata = {
36 
37 	.resources = {
38 		.probe_roms		= probe_roms,
39 		.reserve_resources	= reserve_standard_io_resources,
40 		.memory_setup		= default_machine_specific_memory_setup,
41 	},
42 
43 	.mpparse = {
44 		.mpc_record		= x86_init_uint_noop,
45 		.setup_ioapic_ids	= x86_init_noop,
46 		.mpc_apic_id		= default_mpc_apic_id,
47 		.smp_read_mpc_oem	= default_smp_read_mpc_oem,
48 		.mpc_oem_bus_info	= default_mpc_oem_bus_info,
49 		.find_smp_config	= default_find_smp_config,
50 		.get_smp_config		= default_get_smp_config,
51 	},
52 
53 	.irqs = {
54 		.pre_vector_init	= init_ISA_irqs,
55 		.intr_init		= native_init_IRQ,
56 		.trap_init		= x86_init_noop,
57 	},
58 
59 	.oem = {
60 		.arch_setup		= x86_init_noop,
61 		.banner			= default_banner,
62 	},
63 
64 	.mapping = {
65 		.pagetable_reserve		= native_pagetable_reserve,
66 	},
67 
68 	.paging = {
69 		.pagetable_setup_start	= native_pagetable_setup_start,
70 		.pagetable_setup_done	= native_pagetable_setup_done,
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 	.setup_percpu_clockev		= setup_secondary_APIC_clock,
93 };
94 
95 static void default_nmi_init(void) { };
96 static int default_i8042_detect(void) { return 1; };
97 
98 struct x86_platform_ops x86_platform = {
99 	.calibrate_tsc			= native_calibrate_tsc,
100 	.get_wallclock			= mach_get_cmos_time,
101 	.set_wallclock			= mach_set_rtc_mmss,
102 	.iommu_shutdown			= iommu_shutdown_noop,
103 	.is_untracked_pat_range		= is_ISA_range,
104 	.nmi_init			= default_nmi_init,
105 	.i8042_detect			= default_i8042_detect
106 };
107 
108 EXPORT_SYMBOL_GPL(x86_platform);
109 struct x86_msi_ops x86_msi = {
110 	.setup_msi_irqs = native_setup_msi_irqs,
111 	.teardown_msi_irq = native_teardown_msi_irq,
112 	.teardown_msi_irqs = default_teardown_msi_irqs,
113 };
114