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