arch/x86/kernel/x86_init.c

   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
  10 #include <asm/bios_ebda.h>
  11 #include <asm/paravirt.h>
  12 #include <asm/pci_x86.h>
  13 #include <asm/mpspec.h>
  14 #include <asm/setup.h>
  15 #include <asm/apic.h>
  16 #include <asm/e820.h>
  17 #include <asm/time.h>
  18 #include <asm/irq.h>
  19 #include <asm/pat.h>
  20 #include <asm/tsc.h>
  21 #include <asm/iommu.h>
  22
  23 void __cpuinit x86_init_noop(void) { }
  24 void __init x86_init_uint_noop(unsigned int unused) { }
  25 void __init x86_init_pgd_noop(pgd_t *unused) { }
  26 int __init iommu_init_noop(void) { return 0; }
  27 void iommu_shutdown_noop(void) { }
  28
  29 /*
  30  * The platform setup functions are preset with the default functions
  31  * for standard PC hardware.
  32  */
  33 struct x86_init_ops x86_init __initdata = {
  34
  35         .resources = {
  36                 .probe_roms             = x86_init_noop,
  37                 .reserve_resources      = reserve_standard_io_resources,
  38                 .memory_setup           = default_machine_specific_memory_setup,
  39         },
  40
  41         .mpparse = {
  42                 .mpc_record             = x86_init_uint_noop,
  43                 .setup_ioapic_ids       = x86_init_noop,
  44                 .mpc_apic_id            = default_mpc_apic_id,
  45                 .smp_read_mpc_oem       = default_smp_read_mpc_oem,
  46                 .mpc_oem_bus_info       = default_mpc_oem_bus_info,
  47                 .find_smp_config        = default_find_smp_config,
  48                 .get_smp_config         = default_get_smp_config,
  49         },
  50
  51         .irqs = {
  52                 .pre_vector_init        = init_ISA_irqs,
  53                 .intr_init              = native_init_IRQ,
  54                 .trap_init              = x86_init_noop,
  55         },
  56
  57         .oem = {
  58                 .arch_setup             = x86_init_noop,
  59                 .banner                 = default_banner,
  60         },
  61
  62         .paging = {
  63                 .pagetable_setup_start  = native_pagetable_setup_start,
  64                 .pagetable_setup_done   = native_pagetable_setup_done,
  65         },
  66
  67         .timers = {
  68                 .setup_percpu_clockev   = setup_boot_APIC_clock,
  69                 .tsc_pre_init           = x86_init_noop,
  70                 .timer_init             = hpet_time_init,
  71         },
  72
  73         .iommu = {
  74                 .iommu_init             = iommu_init_noop,
  75         },
  76
  77         .pci = {
  78                 .init                   = x86_default_pci_init,
  79                 .init_irq               = x86_default_pci_init_irq,
  80                 .fixup_irqs             = x86_default_pci_fixup_irqs,
  81         },
  82 };
  83
  84 struct x86_cpuinit_ops x86_cpuinit __cpuinitdata = {
  85         .setup_percpu_clockev           = setup_secondary_APIC_clock,
  86 };
  87
  88 static void default_nmi_init(void) { };
  89 static int default_i8042_detect(void) { return 1; };
  90
  91 struct x86_platform_ops x86_platform = {
  92         .calibrate_tsc                  = native_calibrate_tsc,
  93         .get_wallclock                  = mach_get_cmos_time,
  94         .set_wallclock                  = mach_set_rtc_mmss,
  95         .iommu_shutdown                 = iommu_shutdown_noop,
  96         .is_untracked_pat_range         = is_ISA_range,
  97         .nmi_init                       = default_nmi_init,
  98         .i8042_detect                   = default_i8042_detect
  99 };
 100
 101 EXPORT_SYMBOL_GPL(x86_platform);