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
   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 static void default_nmi_init(void) { };
  80
  81 struct x86_platform_ops x86_platform = {
  82         .calibrate_tsc                  = native_calibrate_tsc,
  83         .get_wallclock                  = mach_get_cmos_time,
  84         .set_wallclock                  = mach_set_rtc_mmss,
  85         .iommu_shutdown                 = iommu_shutdown_noop,
  86         .is_untracked_pat_range         = is_ISA_range,
  87         .nmi_init                       = default_nmi_init
  88 };