| /* |
| * Copyright (C) 2009 Thomas Gleixner <tglx@linutronix.de> |
| * |
| * 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> |
| |
| 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 __init int set_rtc_noop(const struct timespec64 *now) { return -EINVAL; } |
| static __init 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 void enc_status_change_prepare_noop(unsigned long vaddr, int npages, bool enc) { } |
| 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, |
| .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, |
| }; |