// SPDX-License-Identifier: GPL-2.0#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/export.h>#include <linux/reboot.h>#include <linux/init.h>#include <linux/pm.h>#include <linux/efi.h>#include <linux/dmi.h>#include <linux/sched.h>#include <linux/tboot.h>#include <linux/delay.h>#include <linux/objtool.h>#include <linux/pgtable.h>#include <linux/kexec.h>#include <linux/kvm_types.h>#include <acpi/reboot.h>#include <asm/io.h>#include <asm/apic.h>#include <asm/io_apic.h>#include <asm/desc.h>#include <asm/hpet.h>#include <asm/proto.h>#include <asm/reboot_fixups.h>#include <asm/reboot.h>#include <asm/pci_x86.h>#include <asm/cpu.h>#include <asm/nmi.h>#include <asm/smp.h>#include <asm/virt.h> #include <linux/ctype.h>#include <linux/mc146818rtc.h>#include <asm/realmode.h>#include <asm/x86_init.h>#include <asm/efi.h> /* * Power off function, if any */void (*pm_power_off)(void);EXPORT_SYMBOL(pm_power_off); /* * This is set if we need to go through the 'emergency' path. * When machine_emergency_restart() is called, we may be on * an inconsistent state and won't be able to do a clean cleanup */static int reboot_emergency; /* This is set by the PCI code if either type 1 or type 2 PCI is detected */bool port_cf9_safe = false; /* * Reboot options and system auto-detection code provided by * Dell Inc. so their systems "just work". :-) */ /* * Some machines require the "reboot=a" commandline options */static int __init set_acpi_reboot(const struct dmi_system_id *d){	if (reboot_type != BOOT_ACPI) {		reboot_type = BOOT_ACPI;		pr_info("%s series board detected. Selecting %s-method for reboots.\n",			d->ident, "ACPI");	}	return 0;} /* * Some machines require the "reboot=b" or "reboot=k"  commandline options, * this quirk makes that automatic. */static int __init set_bios_reboot(const struct dmi_system_id *d){	if (reboot_type != BOOT_BIOS) {		reboot_type = BOOT_BIOS;		pr_info("%s series board detected. Selecting %s-method for reboots.\n",			d->ident, "BIOS");	}	return 0;} /* * Some machines don't handle the default ACPI reboot method and * require the EFI reboot method: */static int __init set_efi_reboot(const struct dmi_system_id *d){	if (reboot_type != BOOT_EFI && !efi_runtime_disabled()) {		reboot_type = BOOT_EFI;		pr_info("%s series board detected. Selecting EFI-method for reboot.\n", d->ident);	}	return 0;} void __noreturn machine_real_restart(unsigned int type){	local_irq_disable(); 	/*	 * Write zero to CMOS register number 0x0f, which the BIOS POST	 * routine will recognize as telling it to do a proper reboot.  (Well	 * that's what this book in front of me says -- it may only apply to	 * the Phoenix BIOS though, it's not clear).  At the same time,	 * disable NMIs by setting the top bit in the CMOS address register,	 * as we're about to do peculiar things to the CPU.  I'm not sure if	 * `outb_p' is needed instead of just `outb'.  Use it to be on the	 * safe side.  (Yes, CMOS_WRITE does outb_p's. -  Paul G.)	 */	spin_lock(&rtc_lock);	CMOS_WRITE(0x00, 0x8f);	spin_unlock(&rtc_lock); 	/*	 * Switch to the trampoline page table.	 */	load_trampoline_pgtable(); 	/* Jump to the identity-mapped low memory code */#ifdef CONFIG_X86_32	asm volatile("jmpl *%0" : :		     "rm" (real_mode_header->machine_real_restart_asm),		     "a" (type));#else	asm volatile("ljmpl *%0" : :		     "m" (real_mode_header->machine_real_restart_asm),		     "D" (type));#endif	unreachable();}#ifdef CONFIG_APM_MODULEEXPORT_SYMBOL(machine_real_restart);#endifSTACK_FRAME_NON_STANDARD(machine_real_restart); /* * Some Apple MacBook and MacBookPro's needs reboot=p to be able to reboot */static int __init set_pci_reboot(const struct dmi_system_id *d){	if (reboot_type != BOOT_CF9_FORCE) {		reboot_type = BOOT_CF9_FORCE;		pr_info("%s series board detected. Selecting %s-method for reboots.\n",			d->ident, "PCI");	}	return 0;} static int __init set_kbd_reboot(const struct dmi_system_id *d){	if (reboot_type != BOOT_KBD) {		reboot_type = BOOT_KBD;		pr_info("%s series board detected. Selecting %s-method for reboot.\n",			d->ident, "KBD");	}	return 0;} /* * This is a single dmi_table handling all reboot quirks. */static const struct dmi_system_id reboot_dmi_table[] __initconst = { 	/* Acer */	{	/* Handle reboot issue on Acer Aspire one */		.callback = set_kbd_reboot,		.ident = "Acer Aspire One A110",		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),			DMI_MATCH(DMI_PRODUCT_NAME, "AOA110"),		},	},	{	/* Handle reboot issue on Acer TravelMate X514-51T */		.callback = set_efi_reboot,		.ident = "Acer TravelMate X514-51T",		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate X514-51T"),		},	}, 	/* Apple */	{	/* Handle problems with rebooting on Apple MacBook5 */		.callback = set_pci_reboot,		.ident = "Apple MacBook5",		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),			DMI_MATCH(DMI_PRODUCT_NAME, "MacBook5"),		},	},	{	/* Handle problems with rebooting on Apple MacBook6,1 */		.callback = set_pci_reboot,		.ident = "Apple MacBook6,1",		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),			DMI_MATCH(DMI_PRODUCT_NAME, "MacBook6,1"),		},	},	{	/* Handle problems with rebooting on Apple MacBookPro5 */		.callback = set_pci_reboot,		.ident = "Apple MacBookPro5",		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),			DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro5"),		},	},	{	/* Handle problems with rebooting on Apple Macmini3,1 */		.callback = set_pci_reboot,		.ident = "Apple Macmini3,1",		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),			DMI_MATCH(DMI_PRODUCT_NAME, "Macmini3,1"),		},	},	{	/* Handle problems with rebooting on the iMac9,1. */		.callback = set_pci_reboot,		.ident = "Apple iMac9,1",		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),			DMI_MATCH(DMI_PRODUCT_NAME, "iMac9,1"),		},	},	{	/* Handle problems with rebooting on the iMac10,1. */		.callback = set_pci_reboot,		.ident = "Apple iMac10,1",		.matches = {		    DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),		    DMI_MATCH(DMI_PRODUCT_NAME, "iMac10,1"),		},	}, 	/* ASRock */	{	/* Handle problems with rebooting on ASRock Q1900DC-ITX */		.callback = set_pci_reboot,		.ident = "ASRock Q1900DC-ITX",		.matches = {			DMI_MATCH(DMI_BOARD_VENDOR, "ASRock"),			DMI_MATCH(DMI_BOARD_NAME, "Q1900DC-ITX"),		},	}, 	/* ASUS */	{	/* Handle problems with rebooting on ASUS P4S800 */		.callback = set_bios_reboot,		.ident = "ASUS P4S800",		.matches = {			DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),			DMI_MATCH(DMI_BOARD_NAME, "P4S800"),		},	},	{	/* Handle problems with rebooting on ASUS EeeBook X205TA */		.callback = set_acpi_reboot,		.ident = "ASUS EeeBook X205TA",		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),			DMI_MATCH(DMI_PRODUCT_NAME, "X205TA"),		},	},	{	/* Handle problems with rebooting on ASUS EeeBook X205TAW */		.callback = set_acpi_reboot,		.ident = "ASUS EeeBook X205TAW",		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),			DMI_MATCH(DMI_PRODUCT_NAME, "X205TAW"),		},	}, 	/* Certec */	{       /* Handle problems with rebooting on Certec BPC600 */		.callback = set_pci_reboot,		.ident = "Certec BPC600",		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "Certec"),			DMI_MATCH(DMI_PRODUCT_NAME, "BPC600"),		},	}, 	/* Dell */	{	/* Handle problems with rebooting on Dell DXP061 */		.callback = set_bios_reboot,		.ident = "Dell DXP061",		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),			DMI_MATCH(DMI_PRODUCT_NAME, "Dell DXP061"),		},	},	{	/* Handle problems with rebooting on Dell E520's */		.callback = set_bios_reboot,		.ident = "Dell E520",		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),			DMI_MATCH(DMI_PRODUCT_NAME, "Dell DM061"),		},	},	{	/* Handle problems with rebooting on the Latitude E5410. */		.callback = set_pci_reboot,		.ident = "Dell Latitude E5410",		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),			DMI_MATCH(DMI_PRODUCT_NAME, "Latitude E5410"),		},	},	{	/* Handle problems with rebooting on the Latitude E5420. */		.callback = set_pci_reboot,		.ident = "Dell Latitude E5420",		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),			DMI_MATCH(DMI_PRODUCT_NAME, "Latitude E5420"),		},	},	{	/* Handle problems with rebooting on the Latitude E6320. */		.callback = set_pci_reboot,		.ident = "Dell Latitude E6320",		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),			DMI_MATCH(DMI_PRODUCT_NAME, "Latitude E6320"),		},	},	{	/* Handle problems with rebooting on the Latitude E6420. */		.callback = set_pci_reboot,		.ident = "Dell Latitude E6420",		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),			DMI_MATCH(DMI_PRODUCT_NAME, "Latitude E6420"),		},	},	{	/* Handle problems with rebooting on Dell Optiplex 330 with 0KP561 */		.callback = set_bios_reboot,		.ident = "Dell OptiPlex 330",		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),			DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 330"),			DMI_MATCH(DMI_BOARD_NAME, "0KP561"),		},	},	{	/* Handle problems with rebooting on Dell Optiplex 360 with 0T656F */		.callback = set_bios_reboot,		.ident = "Dell OptiPlex 360",		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),			DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 360"),			DMI_MATCH(DMI_BOARD_NAME, "0T656F"),		},	},	{	/* Handle problems with rebooting on Dell Optiplex 745's SFF */		.callback = set_bios_reboot,		.ident = "Dell OptiPlex 745",		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),			DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 745"),		},	},	{	/* Handle problems with rebooting on Dell Optiplex 745's DFF */		.callback = set_bios_reboot,		.ident = "Dell OptiPlex 745",		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),			DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 745"),			DMI_MATCH(DMI_BOARD_NAME, "0MM599"),		},	},	{	/* Handle problems with rebooting on Dell Optiplex 745 with 0KW626 */		.callback = set_bios_reboot,		.ident = "Dell OptiPlex 745",		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),			DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 745"),			DMI_MATCH(DMI_BOARD_NAME, "0KW626"),		},	},	{	/* Handle problems with rebooting on Dell OptiPlex 760 with 0G919G */		.callback = set_bios_reboot,		.ident = "Dell OptiPlex 760",		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),			DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 760"),			DMI_MATCH(DMI_BOARD_NAME, "0G919G"),		},	},	{	/* Handle problems with rebooting on the OptiPlex 990. */		.callback = set_pci_reboot,		.ident = "Dell OptiPlex 990 BIOS A0x",		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),			DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 990"),			DMI_MATCH(DMI_BIOS_VERSION, "A0"),		},	},	{	/* Handle problems with rebooting on Dell 300's */		.callback = set_bios_reboot,		.ident = "Dell PowerEdge 300",		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "Dell Computer Corporation"),			DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge 300/"),		},	},	{	/* Handle problems with rebooting on Dell 1300's */		.callback = set_bios_reboot,		.ident = "Dell PowerEdge 1300",		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "Dell Computer Corporation"),			DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge 1300/"),		},	},	{	/* Handle problems with rebooting on Dell 2400's */		.callback = set_bios_reboot,		.ident = "Dell PowerEdge 2400",		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "Dell Computer Corporation"),			DMI_MATCH(DMI_PRODUCT_NAME, "PowerEdge 2400"),		},	},	{	/* Handle problems with rebooting on the Dell PowerEdge C6100. */		.callback = set_pci_reboot,		.ident = "Dell PowerEdge C6100",		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "Dell"),			DMI_MATCH(DMI_PRODUCT_NAME, "C6100"),		},	},	{	/* Handle problems with rebooting on the Precision M6600. */		.callback = set_pci_reboot,		.ident = "Dell Precision M6600",		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),			DMI_MATCH(DMI_PRODUCT_NAME, "Precision M6600"),		},	},	{	/* Handle problems with rebooting on Dell T5400's */		.callback = set_bios_reboot,		.ident = "Dell Precision T5400",		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),			DMI_MATCH(DMI_PRODUCT_NAME, "Precision WorkStation T5400"),		},	},	{	/* Handle problems with rebooting on Dell T7400's */		.callback = set_bios_reboot,		.ident = "Dell Precision T7400",		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),			DMI_MATCH(DMI_PRODUCT_NAME, "Precision WorkStation T7400"),		},	},	{	/* Handle problems with rebooting on Dell XPS710 */		.callback = set_bios_reboot,		.ident = "Dell XPS710",		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),			DMI_MATCH(DMI_PRODUCT_NAME, "Dell XPS710"),		},	},	{	/* Handle problems with rebooting on Dell Optiplex 7450 AIO */		.callback = set_acpi_reboot,		.ident = "Dell OptiPlex 7450 AIO",		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),			DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 7450 AIO"),		},	}, 	/* Hewlett-Packard */	{	/* Handle problems with rebooting on HP laptops */		.callback = set_bios_reboot,		.ident = "HP Compaq Laptop",		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),			DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq"),		},	}, 	{	/* PCIe Wifi card isn't detected after reboot otherwise */		.callback = set_pci_reboot,		.ident = "Zotac ZBOX CI327 nano",		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "NA"),			DMI_MATCH(DMI_PRODUCT_NAME, "ZBOX-CI327NANO-GS-01"),		},	}, 	/* Sony */	{	/* Handle problems with rebooting on Sony VGN-Z540N */		.callback = set_bios_reboot,		.ident = "Sony VGN-Z540N",		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),			DMI_MATCH(DMI_PRODUCT_NAME, "VGN-Z540N"),		},	}, 	{ }}; static int __init reboot_init(void){	int rv; 

Lines 1–500 of 946. Load more