1b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */ 257844a8fSThomas Gleixner #ifndef _ASM_X86_PLATFORM_H 357844a8fSThomas Gleixner #define _ASM_X86_PLATFORM_H 457844a8fSThomas Gleixner 547a3d5daSThomas Gleixner #include <asm/bootparam.h> 6030cb6c0SThomas Gleixner 7f6a9f8a4SJoerg Roedel struct ghcb; 852fdb568SThomas Gleixner struct mpc_bus; 9fd6c6661SThomas Gleixner struct mpc_cpu; 10f6a9f8a4SJoerg Roedel struct pt_regs; 1172302142SThomas Gleixner struct mpc_table; 1264be4c1cSDaniel J Blueman struct cpuinfo_x86; 136b15ffa0SThomas Gleixner struct irq_domain; 14fd6c6661SThomas Gleixner 1557844a8fSThomas Gleixner /** 16f4848472SThomas Gleixner * struct x86_init_mpparse - platform specific mpparse ops 17de934103SThomas Gleixner * @setup_ioapic_ids: platform specific ioapic id override 18b3f1b617SThomas Gleixner * @find_smp_config: find the smp configuration 19b3f1b617SThomas Gleixner * @get_smp_config: get the smp configuration 20f4848472SThomas Gleixner */ 21f4848472SThomas Gleixner struct x86_init_mpparse { 22de934103SThomas Gleixner void (*setup_ioapic_ids)(void); 23b24c2a92SYinghai Lu void (*find_smp_config)(void); 24b3f1b617SThomas Gleixner void (*get_smp_config)(unsigned int early); 25f4848472SThomas Gleixner }; 26f4848472SThomas Gleixner 27f4848472SThomas Gleixner /** 28f7cf5a5bSThomas Gleixner * struct x86_init_resources - platform specific resource related ops 29f7cf5a5bSThomas Gleixner * @probe_roms: probe BIOS roms 308fee697dSThomas Gleixner * @reserve_resources: reserve the standard resources for the 318fee697dSThomas Gleixner * platform 326b18ae3eSThomas Gleixner * @memory_setup: platform specific memory setup 334338e40dSKevin Loughlin * @dmi_setup: platform specific DMI setup 34f7cf5a5bSThomas Gleixner */ 35f7cf5a5bSThomas Gleixner struct x86_init_resources { 36f7cf5a5bSThomas Gleixner void (*probe_roms)(void); 378fee697dSThomas Gleixner void (*reserve_resources)(void); 386b18ae3eSThomas Gleixner char *(*memory_setup)(void); 394338e40dSKevin Loughlin void (*dmi_setup)(void); 40f7cf5a5bSThomas Gleixner }; 41f7cf5a5bSThomas Gleixner 42f7cf5a5bSThomas Gleixner /** 43d9112f43SThomas Gleixner * struct x86_init_irqs - platform specific interrupt setup 44d9112f43SThomas Gleixner * @pre_vector_init: init code to run before interrupt vectors 45d9112f43SThomas Gleixner * are set up. 4666bcaf0bSThomas Gleixner * @intr_init: interrupt init code 4797992387SThomas Gleixner * @intr_mode_select: interrupt delivery mode selection 4834fba3e6SDou Liyang * @intr_mode_init: interrupt delivery mode setup 496b15ffa0SThomas Gleixner * @create_pci_msi_domain: Create the PCI/MSI interrupt domain 50d9112f43SThomas Gleixner */ 51d9112f43SThomas Gleixner struct x86_init_irqs { 52d9112f43SThomas Gleixner void (*pre_vector_init)(void); 5366bcaf0bSThomas Gleixner void (*intr_init)(void); 5497992387SThomas Gleixner void (*intr_mode_select)(void); 5534fba3e6SDou Liyang void (*intr_mode_init)(void); 566b15ffa0SThomas Gleixner struct irq_domain *(*create_pci_msi_domain)(void); 57d9112f43SThomas Gleixner }; 58d9112f43SThomas Gleixner 59d9112f43SThomas Gleixner /** 6042bbdb43SThomas Gleixner * struct x86_init_oem - oem platform specific customizing functions 6122d3c0d6SDmitry Torokhov * @arch_setup: platform specific architecture setup 626f30c1acSThomas Gleixner * @banner: print a platform specific banner 6342bbdb43SThomas Gleixner */ 6442bbdb43SThomas Gleixner struct x86_init_oem { 6542bbdb43SThomas Gleixner void (*arch_setup)(void); 666f30c1acSThomas Gleixner void (*banner)(void); 6742bbdb43SThomas Gleixner }; 6842bbdb43SThomas Gleixner 6942bbdb43SThomas Gleixner /** 70030cb6c0SThomas Gleixner * struct x86_init_paging - platform specific paging functions 7164282278SAttilio Rao * @pagetable_init: platform specific paging initialization call to setup 7264282278SAttilio Rao * the kernel pagetables and prepare accessors functions. 7364282278SAttilio Rao * Callback must call paging_init(). Called once after the 7464282278SAttilio Rao * direct mapping for phys memory is available. 75030cb6c0SThomas Gleixner */ 76030cb6c0SThomas Gleixner struct x86_init_paging { 777737b215SAttilio Rao void (*pagetable_init)(void); 78030cb6c0SThomas Gleixner }; 79030cb6c0SThomas Gleixner 80030cb6c0SThomas Gleixner /** 81736decacSThomas Gleixner * struct x86_init_timers - platform specific timer setup 82736decacSThomas Gleixner * @setup_perpcu_clockev: set up the per cpu clock event device for the 83736decacSThomas Gleixner * boot cpu 84845b3944SThomas Gleixner * @timer_init: initialize the platform timer (default PIT/HPET) 856b617e22SFeng Tang * @wallclock_init: init the wallclock device 86736decacSThomas Gleixner */ 87736decacSThomas Gleixner struct x86_init_timers { 88736decacSThomas Gleixner void (*setup_percpu_clockev)(void); 89845b3944SThomas Gleixner void (*timer_init)(void); 906b617e22SFeng Tang void (*wallclock_init)(void); 91736decacSThomas Gleixner }; 92736decacSThomas Gleixner 93736decacSThomas Gleixner /** 94d07c1be0SFUJITA Tomonori * struct x86_init_iommu - platform specific iommu setup 95d07c1be0SFUJITA Tomonori * @iommu_init: platform specific iommu setup 96d07c1be0SFUJITA Tomonori */ 97d07c1be0SFUJITA Tomonori struct x86_init_iommu { 98d07c1be0SFUJITA Tomonori int (*iommu_init)(void); 99d07c1be0SFUJITA Tomonori }; 100d07c1be0SFUJITA Tomonori 101d07c1be0SFUJITA Tomonori /** 102b72d0db9SThomas Gleixner * struct x86_init_pci - platform specific pci init functions 1034fb6088aSThomas Gleixner * @arch_init: platform specific pci arch init call 1044fb6088aSThomas Gleixner * @init: platform specific pci subsystem init 105ab3b3793SThomas Gleixner * @init_irq: platform specific pci irq init 1069325a28cSThomas Gleixner * @fixup_irqs: platform specific pci irq fixup 107b72d0db9SThomas Gleixner */ 108b72d0db9SThomas Gleixner struct x86_init_pci { 1094fb6088aSThomas Gleixner int (*arch_init)(void); 110b72d0db9SThomas Gleixner int (*init)(void); 111ab3b3793SThomas Gleixner void (*init_irq)(void); 1129325a28cSThomas Gleixner void (*fixup_irqs)(void); 113b72d0db9SThomas Gleixner }; 114b72d0db9SThomas Gleixner 11557844a8fSThomas Gleixner /** 116f72e38e8SJuergen Gross * struct x86_hyper_init - x86 hypervisor init functions 117f72e38e8SJuergen Gross * @init_platform: platform setup 118f3614646SJuergen Gross * @guest_late_init: guest late init 119f72e38e8SJuergen Gross * @x2apic_available: X2APIC detection 120ab0f59c6SDavid Woodhouse * @msi_ext_dest_id: MSI supports 15-bit APIC IDs 121f72e38e8SJuergen Gross * @init_mem_mapping: setup early mappings during init_mem_mapping() 1226f84f8d1SPavel Tatashin * @init_after_bootmem: guest init after boot allocator is finished 123f72e38e8SJuergen Gross */ 124f72e38e8SJuergen Gross struct x86_hyper_init { 125f72e38e8SJuergen Gross void (*init_platform)(void); 126f3614646SJuergen Gross void (*guest_late_init)(void); 127f72e38e8SJuergen Gross bool (*x2apic_available)(void); 128ab0f59c6SDavid Woodhouse bool (*msi_ext_dest_id)(void); 129f72e38e8SJuergen Gross void (*init_mem_mapping)(void); 1306f84f8d1SPavel Tatashin void (*init_after_bootmem)(void); 131f72e38e8SJuergen Gross }; 132f72e38e8SJuergen Gross 133f72e38e8SJuergen Gross /** 134038bac2bSJuergen Gross * struct x86_init_acpi - x86 ACPI init functions 13541fa1ee9SJosh Boyer * @set_root_poitner: set RSDP address 136038bac2bSJuergen Gross * @get_root_pointer: get RSDP address 13781b53e5fSAndy Shevchenko * @reduced_hw_early_init: hardware reduced platform early init 138038bac2bSJuergen Gross */ 139038bac2bSJuergen Gross struct x86_init_acpi { 14041fa1ee9SJosh Boyer void (*set_root_pointer)(u64 addr); 141038bac2bSJuergen Gross u64 (*get_root_pointer)(void); 14281b53e5fSAndy Shevchenko void (*reduced_hw_early_init)(void); 143038bac2bSJuergen Gross }; 144038bac2bSJuergen Gross 145038bac2bSJuergen Gross /** 1461e8c5971SBrijesh Singh * struct x86_guest - Functions used by misc guest incarnations like SEV, TDX, etc. 1471e8c5971SBrijesh Singh * 1481e8c5971SBrijesh Singh * @enc_status_change_prepare Notify HV before the encryption status of a range is changed 1491e8c5971SBrijesh Singh * @enc_status_change_finish Notify HV after the encryption status of a range is changed 1501e8c5971SBrijesh Singh * @enc_tlb_flush_required Returns true if a TLB flush is needed before changing page encryption status 1511e8c5971SBrijesh Singh * @enc_cache_flush_required Returns true if a cache flush is needed before changing page encryption status 1521e8c5971SBrijesh Singh */ 1531e8c5971SBrijesh Singh struct x86_guest { 1543f6819ddSKirill A. Shutemov bool (*enc_status_change_prepare)(unsigned long vaddr, int npages, bool enc); 1551e8c5971SBrijesh Singh bool (*enc_status_change_finish)(unsigned long vaddr, int npages, bool enc); 1561e8c5971SBrijesh Singh bool (*enc_tlb_flush_required)(bool enc); 1571e8c5971SBrijesh Singh bool (*enc_cache_flush_required)(void); 1581e8c5971SBrijesh Singh }; 1591e8c5971SBrijesh Singh 1601e8c5971SBrijesh Singh /** 16157844a8fSThomas Gleixner * struct x86_init_ops - functions for platform specific setup 16257844a8fSThomas Gleixner * 16357844a8fSThomas Gleixner */ 16457844a8fSThomas Gleixner struct x86_init_ops { 165f7cf5a5bSThomas Gleixner struct x86_init_resources resources; 166f4848472SThomas Gleixner struct x86_init_mpparse mpparse; 167d9112f43SThomas Gleixner struct x86_init_irqs irqs; 16842bbdb43SThomas Gleixner struct x86_init_oem oem; 169030cb6c0SThomas Gleixner struct x86_init_paging paging; 170736decacSThomas Gleixner struct x86_init_timers timers; 171d07c1be0SFUJITA Tomonori struct x86_init_iommu iommu; 172b72d0db9SThomas Gleixner struct x86_init_pci pci; 173f72e38e8SJuergen Gross struct x86_hyper_init hyper; 174038bac2bSJuergen Gross struct x86_init_acpi acpi; 175736decacSThomas Gleixner }; 176736decacSThomas Gleixner 177736decacSThomas Gleixner /** 178736decacSThomas Gleixner * struct x86_cpuinit_ops - platform specific cpu hotplug setups 179736decacSThomas Gleixner * @setup_percpu_clockev: set up the per cpu clock event device 180df156f90SIgor Mammedov * @early_percpu_clock_init: early init of the per cpu clock event device 181ff3cfcb0SThomas Gleixner * @fixup_cpu_id: fixup function for cpuinfo_x86::phys_proc_id 182ff3cfcb0SThomas Gleixner * @parallel_bringup: Parallel bringup control 183736decacSThomas Gleixner */ 184736decacSThomas Gleixner struct x86_cpuinit_ops { 185736decacSThomas Gleixner void (*setup_percpu_clockev)(void); 186df156f90SIgor Mammedov void (*early_percpu_clock_init)(void); 18764be4c1cSDaniel J Blueman void (*fixup_cpu_id)(struct cpuinfo_x86 *c, int node); 188ff3cfcb0SThomas Gleixner bool parallel_bringup; 18957844a8fSThomas Gleixner }; 19057844a8fSThomas Gleixner 191e27c4929SArnd Bergmann struct timespec64; 1923565184eSDavid Vrabel 1932d826404SThomas Gleixner /** 19480dfd83dSLuis R. Rodriguez * struct x86_legacy_devices - legacy x86 devices 19580dfd83dSLuis R. Rodriguez * 19680dfd83dSLuis R. Rodriguez * @pnpbios: this platform can have a PNPBIOS. If this is disabled the platform 19780dfd83dSLuis R. Rodriguez * is known to never have a PNPBIOS. 19880dfd83dSLuis R. Rodriguez * 19980dfd83dSLuis R. Rodriguez * These are devices known to require LPC or ISA bus. The definition of legacy 20080dfd83dSLuis R. Rodriguez * devices adheres to the ACPI 5.2.9.3 IA-PC Boot Architecture flag 20180dfd83dSLuis R. Rodriguez * ACPI_FADT_LEGACY_DEVICES. These devices consist of user visible devices on 20280dfd83dSLuis R. Rodriguez * the LPC or ISA bus. User visible devices are devices that have end-user 20380dfd83dSLuis R. Rodriguez * accessible connectors (for example, LPT parallel port). Legacy devices on 20480dfd83dSLuis R. Rodriguez * the LPC bus consist for example of serial and parallel ports, PS/2 keyboard 20580dfd83dSLuis R. Rodriguez * / mouse, and the floppy disk controller. A system that lacks all known 20680dfd83dSLuis R. Rodriguez * legacy devices can assume all devices can be detected exclusively via 20780dfd83dSLuis R. Rodriguez * standard device enumeration mechanisms including the ACPI namespace. 20880dfd83dSLuis R. Rodriguez * 20980dfd83dSLuis R. Rodriguez * A system which has does not have ACPI_FADT_LEGACY_DEVICES enabled must not 21080dfd83dSLuis R. Rodriguez * have any of the legacy devices enumerated below present. 21180dfd83dSLuis R. Rodriguez */ 21280dfd83dSLuis R. Rodriguez struct x86_legacy_devices { 21380dfd83dSLuis R. Rodriguez int pnpbios; 21480dfd83dSLuis R. Rodriguez }; 21580dfd83dSLuis R. Rodriguez 21680dfd83dSLuis R. Rodriguez /** 21793ffa9a4SDmitry Torokhov * enum x86_legacy_i8042_state - i8042 keyboard controller state 21893ffa9a4SDmitry Torokhov * @X86_LEGACY_I8042_PLATFORM_ABSENT: the controller is always absent on 21993ffa9a4SDmitry Torokhov * given platform/subarch. 22093ffa9a4SDmitry Torokhov * @X86_LEGACY_I8042_FIRMWARE_ABSENT: firmware reports that the controller 22193ffa9a4SDmitry Torokhov * is absent. 22293ffa9a4SDmitry Torokhov * @X86_LEGACY_i8042_EXPECTED_PRESENT: the controller is likely to be 22393ffa9a4SDmitry Torokhov * present, the i8042 driver should probe for controller existence. 22493ffa9a4SDmitry Torokhov */ 22593ffa9a4SDmitry Torokhov enum x86_legacy_i8042_state { 22693ffa9a4SDmitry Torokhov X86_LEGACY_I8042_PLATFORM_ABSENT, 22793ffa9a4SDmitry Torokhov X86_LEGACY_I8042_FIRMWARE_ABSENT, 22893ffa9a4SDmitry Torokhov X86_LEGACY_I8042_EXPECTED_PRESENT, 22993ffa9a4SDmitry Torokhov }; 23093ffa9a4SDmitry Torokhov 23193ffa9a4SDmitry Torokhov /** 2328d152e7aSLuis R. Rodriguez * struct x86_legacy_features - legacy x86 features 2338d152e7aSLuis R. Rodriguez * 23493ffa9a4SDmitry Torokhov * @i8042: indicated if we expect the device to have i8042 controller 23593ffa9a4SDmitry Torokhov * present. 2368d152e7aSLuis R. Rodriguez * @rtc: this device has a CMOS real-time clock present 23730f02739SAndy Lutomirski * @reserve_bios_regions: boot code will search for the EBDA address and the 23830f02739SAndy Lutomirski * start of the 640k - 1M BIOS region. If false, the platform must 23930f02739SAndy Lutomirski * ensure that its memory map correctly reserves sub-1MB regions as needed. 24080dfd83dSLuis R. Rodriguez * @devices: legacy x86 devices, refer to struct x86_legacy_devices 24180dfd83dSLuis R. Rodriguez * documentation for further details. 2428d152e7aSLuis R. Rodriguez */ 2438d152e7aSLuis R. Rodriguez struct x86_legacy_features { 24493ffa9a4SDmitry Torokhov enum x86_legacy_i8042_state i8042; 2458d152e7aSLuis R. Rodriguez int rtc; 246e348caefSJan Kiszka int warm_reset; 2476d730525SJuergen Gross int no_vga; 248edce2121SIngo Molnar int reserve_bios_regions; 24980dfd83dSLuis R. Rodriguez struct x86_legacy_devices devices; 2508d152e7aSLuis R. Rodriguez }; 2518d152e7aSLuis R. Rodriguez 2528d152e7aSLuis R. Rodriguez /** 253f72e38e8SJuergen Gross * struct x86_hyper_runtime - x86 hypervisor specific runtime callbacks 254f72e38e8SJuergen Gross * 255f6a9f8a4SJoerg Roedel * @pin_vcpu: pin current vcpu to specified physical 256f6a9f8a4SJoerg Roedel * cpu (run rarely) 257f6a9f8a4SJoerg Roedel * @sev_es_hcall_prepare: Load additional hypervisor-specific 258f6a9f8a4SJoerg Roedel * state into the GHCB when doing a VMMCALL under 259f6a9f8a4SJoerg Roedel * SEV-ES. Called from the #VC exception handler. 260f6a9f8a4SJoerg Roedel * @sev_es_hcall_finish: Copies state from the GHCB back into the 261f6a9f8a4SJoerg Roedel * processor (or pt_regs). Also runs checks on the 262f6a9f8a4SJoerg Roedel * state returned from the hypervisor after a 263f6a9f8a4SJoerg Roedel * VMMCALL under SEV-ES. Needs to return 'false' 264f6a9f8a4SJoerg Roedel * if the checks fail. Called from the #VC 265f6a9f8a4SJoerg Roedel * exception handler. 26688e378d4SMichael Kelley * @is_private_mmio: For CoCo VMs, must map MMIO address as private. 26788e378d4SMichael Kelley * Used when device is emulated by a paravisor 26888e378d4SMichael Kelley * layer in the VM context. 269f72e38e8SJuergen Gross */ 270f72e38e8SJuergen Gross struct x86_hyper_runtime { 271f72e38e8SJuergen Gross void (*pin_vcpu)(int cpu); 272f6a9f8a4SJoerg Roedel void (*sev_es_hcall_prepare)(struct ghcb *ghcb, struct pt_regs *regs); 273f6a9f8a4SJoerg Roedel bool (*sev_es_hcall_finish)(struct ghcb *ghcb, struct pt_regs *regs); 27488e378d4SMichael Kelley bool (*is_private_mmio)(u64 addr); 275f72e38e8SJuergen Gross }; 276f72e38e8SJuergen Gross 277f72e38e8SJuergen Gross /** 2782d826404SThomas Gleixner * struct x86_platform_ops - platform specific runtime functions 279aa297292SLen Brown * @calibrate_cpu: calibrate CPU 280aa297292SLen Brown * @calibrate_tsc: calibrate TSC, if different from CPU 2817bd867dfSFeng Tang * @get_wallclock: get time from HW clock like RTC etc. 2827bd867dfSFeng Tang * @set_wallclock: set time back to HW clock 283eb41c8beSH. Peter Anvin * @is_untracked_pat_range exclude from PAT logic 28478c06176SRuss Anderson * @nmi_init enable NMI on cpus 285b74f05d6SMarcelo Tosatti * @save_sched_clock_state: save state for sched_clock() on suspend 286b74f05d6SMarcelo Tosatti * @restore_sched_clock_state: restore state for sched_clock() on resume 28722d3c0d6SDmitry Torokhov * @apic_post_init: adjust apic if needed 2888d152e7aSLuis R. Rodriguez * @legacy: legacy features 2898d152e7aSLuis R. Rodriguez * @set_legacy_features: override legacy features. Use of this callback 2908d152e7aSLuis R. Rodriguez * is highly discouraged. You should only need 2918d152e7aSLuis R. Rodriguez * this if your hardware platform requires further 29222d3c0d6SDmitry Torokhov * custom fine tuning far beyond what may be 2938d152e7aSLuis R. Rodriguez * possible in x86_early_init_platform_quirks() by 2948d152e7aSLuis R. Rodriguez * only using the current x86_hardware_subarch 2958d152e7aSLuis R. Rodriguez * semantics. 296f1e52500SJuergen Gross * @realmode_reserve: reserve memory for realmode trampoline 297f1e52500SJuergen Gross * @realmode_init: initialize realmode trampoline 298f72e38e8SJuergen Gross * @hyper: x86 hypervisor specific runtime callbacks 2992d826404SThomas Gleixner */ 3002d826404SThomas Gleixner struct x86_platform_ops { 301aa297292SLen Brown unsigned long (*calibrate_cpu)(void); 3022d826404SThomas Gleixner unsigned long (*calibrate_tsc)(void); 303e27c4929SArnd Bergmann void (*get_wallclock)(struct timespec64 *ts); 304e27c4929SArnd Bergmann int (*set_wallclock)(const struct timespec64 *ts); 305338bac52SFUJITA Tomonori void (*iommu_shutdown)(void); 306eb41c8beSH. Peter Anvin bool (*is_untracked_pat_range)(u64 start, u64 end); 30778c06176SRuss Anderson void (*nmi_init)(void); 308064a59b6SJacob Pan unsigned char (*get_nmi_reason)(void); 309b74f05d6SMarcelo Tosatti void (*save_sched_clock_state)(void); 310b74f05d6SMarcelo Tosatti void (*restore_sched_clock_state)(void); 3117db971b2SIdo Yariv void (*apic_post_init)(void); 3128d152e7aSLuis R. Rodriguez struct x86_legacy_features legacy; 3138d152e7aSLuis R. Rodriguez void (*set_legacy_features)(void); 314f1e52500SJuergen Gross void (*realmode_reserve)(void); 315f1e52500SJuergen Gross void (*realmode_init)(void); 316f72e38e8SJuergen Gross struct x86_hyper_runtime hyper; 3171e8c5971SBrijesh Singh struct x86_guest guest; 3182d826404SThomas Gleixner }; 3192d826404SThomas Gleixner 32051b146c5SBaoquan He struct x86_apic_ops { 32151b146c5SBaoquan He unsigned int (*io_apic_read) (unsigned int apic, unsigned int reg); 32251b146c5SBaoquan He void (*restore)(void); 3234a8e2a31SKonrad Rzeszutek Wilk }; 3244a8e2a31SKonrad Rzeszutek Wilk 32557844a8fSThomas Gleixner extern struct x86_init_ops x86_init; 326736decacSThomas Gleixner extern struct x86_cpuinit_ops x86_cpuinit; 3272d826404SThomas Gleixner extern struct x86_platform_ops x86_platform; 328294ee6f8SStefano Stabellini extern struct x86_msi_ops x86_msi; 32951b146c5SBaoquan He extern struct x86_apic_ops x86_apic_ops; 3308d152e7aSLuis R. Rodriguez 3318d152e7aSLuis R. Rodriguez extern void x86_early_init_platform_quirks(void); 33257844a8fSThomas Gleixner extern void x86_init_noop(void); 333f4848472SThomas Gleixner extern void x86_init_uint_noop(unsigned int unused); 334bef6e0aeSZhenzhong Duan extern bool bool_x86_init_noop(void); 335bef6e0aeSZhenzhong Duan extern void x86_op_int_noop(int cpu); 336f79b1c57SRajneesh Bhardwaj extern bool x86_pnpbios_disabled(void); 337d21a19e1SSaurabh Sengar extern int set_rtc_noop(const struct timespec64 *now); 338d21a19e1SSaurabh Sengar extern void get_rtc_noop(struct timespec64 *now); 33957844a8fSThomas Gleixner 34057844a8fSThomas Gleixner #endif 341