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 #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         .paging = {
  65                 .pagetable_setup_start  = native_pagetable_setup_start,
  66                 .pagetable_setup_done   = native_pagetable_setup_done,
  67         },
  68
  69         .timers = {
  70                 .setup_percpu_clockev   = setup_boot_APIC_clock,
  71                 .tsc_pre_init           = x86_init_noop,
  72                 .timer_init             = hpet_time_init,
  73                 .wallclock_init         = x86_init_noop,
  74         },
  75
  76         .iommu = {
  77                 .iommu_init             = iommu_init_noop,
  78         },
  79
  80         .pci = {
  81                 .init                   = x86_default_pci_init,
  82                 .init_irq               = x86_default_pci_init_irq,
  83                 .fixup_irqs             = x86_default_pci_fixup_irqs,
  84         },
  85 };
  86
  87 struct x86_cpuinit_ops x86_cpuinit __cpuinitdata = {
  88         .setup_percpu_clockev           = setup_secondary_APIC_clock,
  89 };
  90
  91 static void default_nmi_init(void) { };
  92 static int default_i8042_detect(void) { return 1; };
  93
  94 struct x86_platform_ops x86_platform = {
  95         .calibrate_tsc                  = native_calibrate_tsc,
  96         .get_wallclock                  = mach_get_cmos_time,
  97         .set_wallclock                  = mach_set_rtc_mmss,
  98         .iommu_shutdown                 = iommu_shutdown_noop,
  99         .is_untracked_pat_range         = is_ISA_range,
 100         .nmi_init                       = default_nmi_init,
 101         .i8042_detect                   = default_i8042_detect
 102 };
 103
 104 EXPORT_SYMBOL_GPL(x86_platform);
 105 struct x86_msi_ops x86_msi = {
 106         .setup_msi_irqs = native_setup_msi_irqs,
 107         .teardown_msi_irq = native_teardown_msi_irq,
 108         .teardown_msi_irqs = default_teardown_msi_irqs,
 109 };