arch/x86/kernel/x86_init-xen.c

   1 /*
   2  * Copyright (C) 2009 Thomas Gleixner <tglx@linutronix.de>
   3  *
   4  *  For licencing details see kernel-base/COPYING
   5  */
   6 #include <linux/bitmap.h>
   7 #include <linux/init.h>
   8 #include <linux/ioport.h>
   9 #include <linux/list.h>
  10 #include <linux/module.h>
  11 #include <linux/pci.h>
  12 #include <linux/spinlock_types.h>
  13 #include <linux/threads.h>
  14
  15 #include <asm/pci_x86.h>
  16 #include <asm/mpspec.h>
  17 #include <asm/setup.h>
  18 #include <asm/apic.h>
  19 #include <asm/e820.h>
  20 #include <asm/time.h>
  21 #include <asm/irq.h>
  22 #include <asm/pat.h>
  23 #include <asm/iommu.h>
  24 #include <asm/mach_traps.h>
  25
  26 void __cpuinit x86_init_noop(void) { }
  27 void __init x86_init_uint_noop(unsigned int unused) { }
  28 void __init x86_init_pgd_noop(pgd_t *unused) { }
  29 int __init iommu_init_noop(void) { return 0; }
  30 void wallclock_init_noop(void) { }
  31
  32 /*
  33  * The platform setup functions are preset with the default functions
  34  * for standard PC hardware.
  35  */
  36 struct x86_init_ops x86_init __initdata = {
  37
  38         .resources = {
  39 #ifdef CONFIG_XEN_PRIVILEGED_GUEST
  40                 .probe_roms             = probe_roms,
  41 #else
  42                 .probe_roms             = x86_init_noop,
  43 #endif
  44                 .reserve_resources      = reserve_standard_io_resources,
  45                 .memory_setup           = default_machine_specific_memory_setup,
  46         },
  47
  48         .mpparse = {
  49                 .mpc_record             = x86_init_uint_noop,
  50                 .setup_ioapic_ids       = x86_init_noop,
  51                 .mpc_apic_id            = NULL,
  52                 .smp_read_mpc_oem       = default_smp_read_mpc_oem,
  53                 .mpc_oem_bus_info       = default_mpc_oem_bus_info,
  54                 .find_smp_config        = default_find_smp_config,
  55                 .get_smp_config         = default_get_smp_config,
  56         },
  57
  58         .irqs = {
  59                 .pre_vector_init        = NULL,
  60                 .intr_init              = NULL,
  61                 .trap_init              = x86_init_noop,
  62         },
  63
  64         .oem = {
  65                 .arch_setup             = xen_arch_setup,
  66                 .banner                 = x86_init_noop,
  67         },
  68
  69         .mapping = {
  70                 .pagetable_reserve              = xen_pagetable_reserve,
  71         },
  72
  73         .paging = {
  74                 .pagetable_setup_start  = x86_init_pgd_noop,
  75                 .pagetable_setup_done   = x86_init_pgd_noop,
  76         },
  77
  78         .timers = {
  79                 .setup_percpu_clockev   = NULL,
  80                 .tsc_pre_init           = x86_init_noop,
  81                 .timer_init             = x86_init_noop,
  82                 .wallclock_init         = x86_init_noop,
  83         },
  84
  85         .iommu = {
  86                 .iommu_init             = iommu_init_noop,
  87         },
  88
  89         .pci = {
  90                 .init                   = x86_default_pci_init,
  91                 .init_irq               = x86_default_pci_init_irq,
  92                 .fixup_irqs             = x86_default_pci_fixup_irqs,
  93         },
  94 };
  95
  96 static int default_i8042_detect(void) { return 1; };
  97
  98 struct x86_platform_ops x86_platform = {
  99         .calibrate_tsc                  = NULL,
 100         .wallclock_init                 = wallclock_init_noop,
 101         .get_wallclock                  = xen_read_wallclock,
 102         .set_wallclock                  = xen_write_wallclock,
 103         .is_untracked_pat_range         = is_ISA_range,
 104         .get_nmi_reason                 = xen_get_nmi_reason,
 105         .i8042_detect                   = default_i8042_detect
 106 };
 107
 108 EXPORT_SYMBOL_GPL(x86_platform);