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- /*
- * Copyright (C) 2009 Thomas Gleixner <[email protected]>
- *
- * For licencing details see kernel-base/COPYING
- */
- #include <linux/init.h>
- #include <linux/ioport.h>
- #include <linux/export.h>
- #include <linux/pci.h>
- #include <asm/acpi.h>
- #include <asm/bios_ebda.h>
- #include <asm/paravirt.h>
- #include <asm/pci_x86.h>
- #include <asm/mpspec.h>
- #include <asm/setup.h>
- #include <asm/apic.h>
- #include <asm/e820/api.h>
- #include <asm/time.h>
- #include <asm/irq.h>
- #include <asm/io_apic.h>
- #include <asm/hpet.h>
- #include <asm/memtype.h>
- #include <asm/tsc.h>
- #include <asm/iommu.h>
- #include <asm/mach_traps.h>
- #include <asm/irqdomain.h>
- #include <asm/realmode.h>
- void x86_init_noop(void) { }
- void __init x86_init_uint_noop(unsigned int unused) { }
- static int __init iommu_init_noop(void) { return 0; }
- static void iommu_shutdown_noop(void) { }
- bool __init bool_x86_init_noop(void) { return false; }
- void x86_op_int_noop(int cpu) { }
- static int set_rtc_noop(const struct timespec64 *now) { return -EINVAL; }
- static void get_rtc_noop(struct timespec64 *now) { }
- static __initconst const struct of_device_id of_cmos_match[] = {
- { .compatible = "motorola,mc146818" },
- {}
- };
- /*
- * Allow devicetree configured systems to disable the RTC by setting the
- * corresponding DT node's status property to disabled. Code is optimized
- * out for CONFIG_OF=n builds.
- */
- static __init void x86_wallclock_init(void)
- {
- struct device_node *node = of_find_matching_node(NULL, of_cmos_match);
- if (node && !of_device_is_available(node)) {
- x86_platform.get_wallclock = get_rtc_noop;
- x86_platform.set_wallclock = set_rtc_noop;
- }
- }
- /*
- * The platform setup functions are preset with the default functions
- * for standard PC hardware.
- */
- struct x86_init_ops x86_init __initdata = {
- .resources = {
- .probe_roms = probe_roms,
- .reserve_resources = reserve_standard_io_resources,
- .memory_setup = e820__memory_setup_default,
- },
- .mpparse = {
- .setup_ioapic_ids = x86_init_noop,
- .find_smp_config = default_find_smp_config,
- .get_smp_config = default_get_smp_config,
- },
- .irqs = {
- .pre_vector_init = init_ISA_irqs,
- .intr_init = native_init_IRQ,
- .intr_mode_select = apic_intr_mode_select,
- .intr_mode_init = apic_intr_mode_init,
- .create_pci_msi_domain = native_create_pci_msi_domain,
- },
- .oem = {
- .arch_setup = x86_init_noop,
- .banner = default_banner,
- },
- .paging = {
- .pagetable_init = native_pagetable_init,
- },
- .timers = {
- .setup_percpu_clockev = setup_boot_APIC_clock,
- .timer_init = hpet_time_init,
- .wallclock_init = x86_wallclock_init,
- },
- .iommu = {
- .iommu_init = iommu_init_noop,
- },
- .pci = {
- .init = x86_default_pci_init,
- .init_irq = x86_default_pci_init_irq,
- .fixup_irqs = x86_default_pci_fixup_irqs,
- },
- .hyper = {
- .init_platform = x86_init_noop,
- .guest_late_init = x86_init_noop,
- .x2apic_available = bool_x86_init_noop,
- .msi_ext_dest_id = bool_x86_init_noop,
- .init_mem_mapping = x86_init_noop,
- .init_after_bootmem = x86_init_noop,
- },
- .acpi = {
- .set_root_pointer = x86_default_set_root_pointer,
- .get_root_pointer = x86_default_get_root_pointer,
- .reduced_hw_early_init = acpi_generic_reduced_hw_init,
- },
- };
- struct x86_cpuinit_ops x86_cpuinit = {
- .early_percpu_clock_init = x86_init_noop,
- .setup_percpu_clockev = setup_secondary_APIC_clock,
- };
- static void default_nmi_init(void) { };
- static bool enc_status_change_prepare_noop(unsigned long vaddr, int npages, bool enc) { return true; }
- static bool enc_status_change_finish_noop(unsigned long vaddr, int npages, bool enc) { return false; }
- static bool enc_tlb_flush_required_noop(bool enc) { return false; }
- static bool enc_cache_flush_required_noop(void) { return false; }
- struct x86_platform_ops x86_platform __ro_after_init = {
- .calibrate_cpu = native_calibrate_cpu_early,
- .calibrate_tsc = native_calibrate_tsc,
- .get_wallclock = mach_get_cmos_time,
- .set_wallclock = mach_set_cmos_time,
- .iommu_shutdown = iommu_shutdown_noop,
- .is_untracked_pat_range = is_ISA_range,
- .nmi_init = default_nmi_init,
- .get_nmi_reason = default_get_nmi_reason,
- .save_sched_clock_state = tsc_save_sched_clock_state,
- .restore_sched_clock_state = tsc_restore_sched_clock_state,
- .realmode_reserve = reserve_real_mode,
- .realmode_init = init_real_mode,
- .hyper.pin_vcpu = x86_op_int_noop,
- .guest = {
- .enc_status_change_prepare = enc_status_change_prepare_noop,
- .enc_status_change_finish = enc_status_change_finish_noop,
- .enc_tlb_flush_required = enc_tlb_flush_required_noop,
- .enc_cache_flush_required = enc_cache_flush_required_noop,
- },
- };
- EXPORT_SYMBOL_GPL(x86_platform);
- struct x86_apic_ops x86_apic_ops __ro_after_init = {
- .io_apic_read = native_io_apic_read,
- .restore = native_restore_boot_irq_mode,
- };
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