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#include <linux/ioport.h>
  8#include <linux/module.h>
  9#include <linux/pci.h>
 
 10
 
 11#include <asm/bios_ebda.h>
 12#include <asm/paravirt.h>
 13#include <asm/pci_x86.h>
 14#include <asm/pci.h>
 15#include <asm/mpspec.h>
 16#include <asm/setup.h>
 17#include <asm/apic.h>
 18#include <asm/e820.h>
 19#include <asm/time.h>
 20#include <asm/irq.h>
 21#include <asm/io_apic.h>
 22#include <asm/pat.h>
 
 23#include <asm/tsc.h>
 24#include <asm/iommu.h>
 25#include <asm/mach_traps.h>
 
 
 26
 27void __cpuinit x86_init_noop(void) { }
 28void __init x86_init_uint_noop(unsigned int unused) { }
 29void __init x86_init_pgd_noop(pgd_t *unused) { }
 30int __init iommu_init_noop(void) { return 0; }
 31void iommu_shutdown_noop(void) { }
 32void wallclock_init_noop(void) { }
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 33
 34/*
 35 * The platform setup functions are preset with the default functions
 36 * for standard PC hardware.
 37 */
 38struct x86_init_ops x86_init __initdata = {
 39
 40	.resources = {
 41		.probe_roms		= probe_roms,
 42		.reserve_resources	= reserve_standard_io_resources,
 43		.memory_setup		= default_machine_specific_memory_setup,
 
 44	},
 45
 46	.mpparse = {
 47		.mpc_record		= x86_init_uint_noop,
 48		.setup_ioapic_ids	= x86_init_noop,
 49		.mpc_apic_id		= default_mpc_apic_id,
 50		.smp_read_mpc_oem	= default_smp_read_mpc_oem,
 51		.mpc_oem_bus_info	= default_mpc_oem_bus_info,
 52		.find_smp_config	= default_find_smp_config,
 53		.get_smp_config		= default_get_smp_config,
 54	},
 55
 56	.irqs = {
 57		.pre_vector_init	= init_ISA_irqs,
 58		.intr_init		= native_init_IRQ,
 59		.trap_init		= x86_init_noop,
 
 
 60	},
 61
 62	.oem = {
 63		.arch_setup		= x86_init_noop,
 64		.banner			= default_banner,
 65	},
 66
 67	.mapping = {
 68		.pagetable_reserve		= native_pagetable_reserve,
 69	},
 70
 71	.paging = {
 72		.pagetable_setup_start	= native_pagetable_setup_start,
 73		.pagetable_setup_done	= native_pagetable_setup_done,
 74	},
 75
 76	.timers = {
 77		.setup_percpu_clockev	= setup_boot_APIC_clock,
 78		.tsc_pre_init		= x86_init_noop,
 79		.timer_init		= hpet_time_init,
 80		.wallclock_init		= x86_init_noop,
 81	},
 82
 83	.iommu = {
 84		.iommu_init		= iommu_init_noop,
 85	},
 86
 87	.pci = {
 88		.init			= x86_default_pci_init,
 89		.init_irq		= x86_default_pci_init_irq,
 90		.fixup_irqs		= x86_default_pci_fixup_irqs,
 91	},
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 92};
 93
 94struct x86_cpuinit_ops x86_cpuinit __cpuinitdata = {
 95	.early_percpu_clock_init	= x86_init_noop,
 96	.setup_percpu_clockev		= setup_secondary_APIC_clock,
 
 97};
 98
 99static void default_nmi_init(void) { };
100static int default_i8042_detect(void) { return 1; };
101
102struct x86_platform_ops x86_platform = {
 
 
 
 
 
 
 
 
 
103	.calibrate_tsc			= native_calibrate_tsc,
104	.wallclock_init			= wallclock_init_noop,
105	.get_wallclock			= mach_get_cmos_time,
106	.set_wallclock			= mach_set_rtc_mmss,
107	.iommu_shutdown			= iommu_shutdown_noop,
108	.is_untracked_pat_range		= is_ISA_range,
109	.nmi_init			= default_nmi_init,
110	.get_nmi_reason			= default_get_nmi_reason,
111	.i8042_detect			= default_i8042_detect,
112	.save_sched_clock_state 	= tsc_save_sched_clock_state,
113	.restore_sched_clock_state 	= tsc_restore_sched_clock_state,
 
 
 
 
 
 
 
 
 
 
 
 
114};
115
116EXPORT_SYMBOL_GPL(x86_platform);
117struct x86_msi_ops x86_msi = {
118	.setup_msi_irqs = native_setup_msi_irqs,
119	.teardown_msi_irq = native_teardown_msi_irq,
120	.teardown_msi_irqs = default_teardown_msi_irqs,
121	.restore_msi_irqs = default_restore_msi_irqs,
122};
123
124struct x86_io_apic_ops x86_io_apic_ops = {
125	.init	= native_io_apic_init_mappings,
126	.read	= native_io_apic_read,
127	.write	= native_io_apic_write,
128	.modify	= native_io_apic_modify,
129};

  1/*
  2 * Copyright (C) 2009 Thomas Gleixner <tglx@linutronix.de>
  3 *
  4 *  For licencing details see kernel-base/COPYING
  5 */
  6#include <linux/dmi.h>
  7#include <linux/init.h>
  8#include <linux/ioport.h>
  9#include <linux/export.h>
 10#include <linux/pci.h>
 11#include <linux/acpi.h>
 12
 13#include <asm/acpi.h>
 14#include <asm/bios_ebda.h>
 15#include <asm/paravirt.h>
 16#include <asm/pci_x86.h>
 
 17#include <asm/mpspec.h>
 18#include <asm/setup.h>
 19#include <asm/apic.h>
 20#include <asm/e820/api.h>
 21#include <asm/time.h>
 22#include <asm/irq.h>
 23#include <asm/io_apic.h>
 24#include <asm/hpet.h>
 25#include <asm/memtype.h>
 26#include <asm/tsc.h>
 27#include <asm/iommu.h>
 28#include <asm/mach_traps.h>
 29#include <asm/irqdomain.h>
 30#include <asm/realmode.h>
 31
 32void x86_init_noop(void) { }
 33void __init x86_init_uint_noop(unsigned int unused) { }
 34static int __init iommu_init_noop(void) { return 0; }
 35static void iommu_shutdown_noop(void) { }
 36bool __init bool_x86_init_noop(void) { return false; }
 37void x86_op_int_noop(int cpu) { }
 38int set_rtc_noop(const struct timespec64 *now) { return -EINVAL; }
 39void get_rtc_noop(struct timespec64 *now) { }
 40
 41static __initconst const struct of_device_id of_cmos_match[] = {
 42	{ .compatible = "motorola,mc146818" },
 43	{}
 44};
 45
 46/*
 47 * Allow devicetree configured systems to disable the RTC by setting the
 48 * corresponding DT node's status property to disabled. Code is optimized
 49 * out for CONFIG_OF=n builds.
 50 */
 51static __init void x86_wallclock_init(void)
 52{
 53	struct device_node *node = of_find_matching_node(NULL, of_cmos_match);
 54
 55	if (node && !of_device_is_available(node)) {
 56		x86_platform.get_wallclock = get_rtc_noop;
 57		x86_platform.set_wallclock = set_rtc_noop;
 58	}
 59}
 60
 61/*
 62 * The platform setup functions are preset with the default functions
 63 * for standard PC hardware.
 64 */
 65struct x86_init_ops x86_init __initdata = {
 66
 67	.resources = {
 68		.probe_roms		= probe_roms,
 69		.reserve_resources	= reserve_standard_io_resources,
 70		.memory_setup		= e820__memory_setup_default,
 71		.dmi_setup		= dmi_setup,
 72	},
 73
 74	.mpparse = {
 
 75		.setup_ioapic_ids	= x86_init_noop,
 76		.find_mptable		= mpparse_find_mptable,
 77		.early_parse_smp_cfg	= mpparse_parse_early_smp_config,
 78		.parse_smp_cfg		= mpparse_parse_smp_config,
 
 
 79	},
 80
 81	.irqs = {
 82		.pre_vector_init	= init_ISA_irqs,
 83		.intr_init		= native_init_IRQ,
 84		.intr_mode_select	= apic_intr_mode_select,
 85		.intr_mode_init		= apic_intr_mode_init,
 86		.create_pci_msi_domain	= native_create_pci_msi_domain,
 87	},
 88
 89	.oem = {
 90		.arch_setup		= x86_init_noop,
 91		.banner			= default_banner,
 92	},
 93
 
 
 
 
 94	.paging = {
 95		.pagetable_init		= native_pagetable_init,
 
 96	},
 97
 98	.timers = {
 99		.setup_percpu_clockev	= setup_boot_APIC_clock,
 
100		.timer_init		= hpet_time_init,
101		.wallclock_init		= x86_wallclock_init,
102	},
103
104	.iommu = {
105		.iommu_init		= iommu_init_noop,
106	},
107
108	.pci = {
109		.init			= x86_default_pci_init,
110		.init_irq		= x86_default_pci_init_irq,
111		.fixup_irqs		= x86_default_pci_fixup_irqs,
112	},
113
114	.hyper = {
115		.init_platform		= x86_init_noop,
116		.guest_late_init	= x86_init_noop,
117		.x2apic_available	= bool_x86_init_noop,
118		.msi_ext_dest_id	= bool_x86_init_noop,
119		.init_mem_mapping	= x86_init_noop,
120		.init_after_bootmem	= x86_init_noop,
121	},
122
123	.acpi = {
124		.set_root_pointer	= x86_default_set_root_pointer,
125		.get_root_pointer	= x86_default_get_root_pointer,
126		.reduced_hw_early_init	= acpi_generic_reduced_hw_init,
127	},
128};
129
130struct x86_cpuinit_ops x86_cpuinit = {
131	.early_percpu_clock_init	= x86_init_noop,
132	.setup_percpu_clockev		= setup_secondary_APIC_clock,
133	.parallel_bringup		= true,
134};
135
136static void default_nmi_init(void) { };
 
137
138static int enc_status_change_prepare_noop(unsigned long vaddr, int npages, bool enc) { return 0; }
139static int enc_status_change_finish_noop(unsigned long vaddr, int npages, bool enc) { return 0; }
140static bool enc_tlb_flush_required_noop(bool enc) { return false; }
141static bool enc_cache_flush_required_noop(void) { return false; }
142static void enc_kexec_begin_noop(void) {}
143static void enc_kexec_finish_noop(void) {}
144static bool is_private_mmio_noop(u64 addr) {return false; }
145
146struct x86_platform_ops x86_platform __ro_after_init = {
147	.calibrate_cpu			= native_calibrate_cpu_early,
148	.calibrate_tsc			= native_calibrate_tsc,
 
149	.get_wallclock			= mach_get_cmos_time,
150	.set_wallclock			= mach_set_cmos_time,
151	.iommu_shutdown			= iommu_shutdown_noop,
152	.is_untracked_pat_range		= is_ISA_range,
153	.nmi_init			= default_nmi_init,
154	.get_nmi_reason			= default_get_nmi_reason,
155	.save_sched_clock_state		= tsc_save_sched_clock_state,
156	.restore_sched_clock_state	= tsc_restore_sched_clock_state,
157	.realmode_reserve		= reserve_real_mode,
158	.realmode_init			= init_real_mode,
159	.hyper.pin_vcpu			= x86_op_int_noop,
160	.hyper.is_private_mmio		= is_private_mmio_noop,
161
162	.guest = {
163		.enc_status_change_prepare = enc_status_change_prepare_noop,
164		.enc_status_change_finish  = enc_status_change_finish_noop,
165		.enc_tlb_flush_required	   = enc_tlb_flush_required_noop,
166		.enc_cache_flush_required  = enc_cache_flush_required_noop,
167		.enc_kexec_begin	   = enc_kexec_begin_noop,
168		.enc_kexec_finish	   = enc_kexec_finish_noop,
169	},
170};
171
172EXPORT_SYMBOL_GPL(x86_platform);
 
 
 
 
 
 
173
174struct x86_apic_ops x86_apic_ops __ro_after_init = {
175	.io_apic_read	= native_io_apic_read,
176	.restore	= native_restore_boot_irq_mode,
 
 
177};