xref: /openbmc/linux/arch/x86/kernel/x86_init.c (revision 7dd65feb) 
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 
8 #include <asm/bios_ebda.h>
9 #include <asm/paravirt.h>
10 #include <asm/mpspec.h>
11 #include <asm/setup.h>
12 #include <asm/apic.h>
13 #include <asm/e820.h>
14 #include <asm/time.h>
15 #include <asm/irq.h>
16 #include <asm/pat.h>
17 #include <asm/tsc.h>
18 #include <asm/iommu.h>
19 
20 void __cpuinit x86_init_noop(void) { }
21 void __init x86_init_uint_noop(unsigned int unused) { }
22 void __init x86_init_pgd_noop(pgd_t *unused) { }
23 int __init iommu_init_noop(void) { return 0; }
24 void iommu_shutdown_noop(void) { }
25 
26 /*
27  * The platform setup functions are preset with the default functions
28  * for standard PC hardware.
29  */
30 struct x86_init_ops x86_init __initdata = {
31 
32 	.resources = {
33 		.probe_roms		= x86_init_noop,
34 		.reserve_resources	= reserve_standard_io_resources,
35 		.memory_setup		= default_machine_specific_memory_setup,
36 	},
37 
38 	.mpparse = {
39 		.mpc_record		= x86_init_uint_noop,
40 		.setup_ioapic_ids	= x86_init_noop,
41 		.mpc_apic_id		= default_mpc_apic_id,
42 		.smp_read_mpc_oem	= default_smp_read_mpc_oem,
43 		.mpc_oem_bus_info	= default_mpc_oem_bus_info,
44 		.find_smp_config	= default_find_smp_config,
45 		.get_smp_config		= default_get_smp_config,
46 	},
47 
48 	.irqs = {
49 		.pre_vector_init	= init_ISA_irqs,
50 		.intr_init		= native_init_IRQ,
51 		.trap_init		= x86_init_noop,
52 	},
53 
54 	.oem = {
55 		.arch_setup		= x86_init_noop,
56 		.banner			= default_banner,
57 	},
58 
59 	.paging = {
60 		.pagetable_setup_start	= native_pagetable_setup_start,
61 		.pagetable_setup_done	= native_pagetable_setup_done,
62 	},
63 
64 	.timers = {
65 		.setup_percpu_clockev	= setup_boot_APIC_clock,
66 		.tsc_pre_init		= x86_init_noop,
67 		.timer_init		= hpet_time_init,
68 	},
69 
70 	.iommu = {
71 		.iommu_init		= iommu_init_noop,
72 	},
73 };
74 
75 struct x86_cpuinit_ops x86_cpuinit __cpuinitdata = {
76 	.setup_percpu_clockev		= setup_secondary_APIC_clock,
77 };
78 
79 struct x86_platform_ops x86_platform = {
80 	.calibrate_tsc			= native_calibrate_tsc,
81 	.get_wallclock			= mach_get_cmos_time,
82 	.set_wallclock			= mach_set_rtc_mmss,
83 	.iommu_shutdown			= iommu_shutdown_noop,
84 	.is_untracked_pat_range		= is_ISA_range,
85 };
86