xref: /openbmc/linux/arch/x86/kernel/x86_init.c (revision 8684014d) 
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/hpet.h>
23 #include <asm/pat.h>
24 #include <asm/tsc.h>
25 #include <asm/iommu.h>
26 #include <asm/mach_traps.h>
27 
28 void x86_init_noop(void) { }
29 void __init x86_init_uint_noop(unsigned int unused) { }
30 int __init iommu_init_noop(void) { return 0; }
31 void iommu_shutdown_noop(void) { }
32 
33 /*
34  * The platform setup functions are preset with the default functions
35  * for standard PC hardware.
36  */
37 struct x86_init_ops x86_init __initdata = {
38 
39 	.resources = {
40 		.probe_roms		= probe_roms,
41 		.reserve_resources	= reserve_standard_io_resources,
42 		.memory_setup		= default_machine_specific_memory_setup,
43 	},
44 
45 	.mpparse = {
46 		.mpc_record		= x86_init_uint_noop,
47 		.setup_ioapic_ids	= x86_init_noop,
48 		.mpc_apic_id		= default_mpc_apic_id,
49 		.smp_read_mpc_oem	= default_smp_read_mpc_oem,
50 		.mpc_oem_bus_info	= default_mpc_oem_bus_info,
51 		.find_smp_config	= default_find_smp_config,
52 		.get_smp_config		= default_get_smp_config,
53 	},
54 
55 	.irqs = {
56 		.pre_vector_init	= init_ISA_irqs,
57 		.intr_init		= native_init_IRQ,
58 		.trap_init		= x86_init_noop,
59 	},
60 
61 	.oem = {
62 		.arch_setup		= x86_init_noop,
63 		.banner			= default_banner,
64 	},
65 
66 	.paging = {
67 		.pagetable_init		= native_pagetable_init,
68 	},
69 
70 	.timers = {
71 		.setup_percpu_clockev	= setup_boot_APIC_clock,
72 		.tsc_pre_init		= x86_init_noop,
73 		.timer_init		= hpet_time_init,
74 		.wallclock_init		= x86_init_noop,
75 	},
76 
77 	.iommu = {
78 		.iommu_init		= iommu_init_noop,
79 	},
80 
81 	.pci = {
82 		.init			= x86_default_pci_init,
83 		.init_irq		= x86_default_pci_init_irq,
84 		.fixup_irqs		= x86_default_pci_fixup_irqs,
85 	},
86 };
87 
88 struct x86_cpuinit_ops x86_cpuinit = {
89 	.early_percpu_clock_init	= x86_init_noop,
90 	.setup_percpu_clockev		= setup_secondary_APIC_clock,
91 };
92 
93 static void default_nmi_init(void) { };
94 static int default_i8042_detect(void) { return 1; };
95 
96 struct x86_platform_ops x86_platform = {
97 	.calibrate_tsc			= native_calibrate_tsc,
98 	.get_wallclock			= mach_get_cmos_time,
99 	.set_wallclock			= mach_set_rtc_mmss,
100 	.iommu_shutdown			= iommu_shutdown_noop,
101 	.is_untracked_pat_range		= is_ISA_range,
102 	.nmi_init			= default_nmi_init,
103 	.get_nmi_reason			= default_get_nmi_reason,
104 	.i8042_detect			= default_i8042_detect,
105 	.save_sched_clock_state 	= tsc_save_sched_clock_state,
106 	.restore_sched_clock_state 	= tsc_restore_sched_clock_state,
107 };
108 
109 EXPORT_SYMBOL_GPL(x86_platform);
110 
111 #if defined(CONFIG_PCI_MSI)
112 struct x86_msi_ops x86_msi = {
113 	.setup_msi_irqs		= native_setup_msi_irqs,
114 	.compose_msi_msg	= native_compose_msi_msg,
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 	.setup_hpet_msi		= default_setup_hpet_msi,
119 };
120 
121 /* MSI arch specific hooks */
122 int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
123 {
124 	return x86_msi.setup_msi_irqs(dev, nvec, type);
125 }
126 
127 void arch_teardown_msi_irqs(struct pci_dev *dev)
128 {
129 	x86_msi.teardown_msi_irqs(dev);
130 }
131 
132 void arch_teardown_msi_irq(unsigned int irq)
133 {
134 	x86_msi.teardown_msi_irq(irq);
135 }
136 
137 void arch_restore_msi_irqs(struct pci_dev *dev)
138 {
139 	x86_msi.restore_msi_irqs(dev);
140 }
141 #endif
142 
143 struct x86_io_apic_ops x86_io_apic_ops = {
144 	.init			= native_io_apic_init_mappings,
145 	.read			= native_io_apic_read,
146 	.write			= native_io_apic_write,
147 	.modify			= native_io_apic_modify,
148 	.disable		= native_disable_io_apic,
149 	.print_entries		= native_io_apic_print_entries,
150 	.set_affinity		= native_ioapic_set_affinity,
151 	.setup_entry		= native_setup_ioapic_entry,
152 	.eoi_ioapic_pin		= native_eoi_ioapic_pin,
153 };
154