2 * boot.c - Architecture-Specific Low-Level ACPI Boot Support
4 * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
5 * Copyright (C) 2001 Jun Nakajima <jun.nakajima@intel.com>
7 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
26 #include <linux/init.h>
27 #include <linux/config.h>
28 #include <linux/acpi.h>
29 #include <linux/efi.h>
30 #include <linux/module.h>
31 #include <linux/dmi.h>
32 #include <linux/irq.h>
34 #include <asm/pgtable.h>
35 #include <asm/io_apic.h>
38 #include <asm/mpspec.h>
42 extern void __init clustered_apic_check(void);
44 extern int gsi_irq_sharing(int gsi);
45 #include <asm/proto.h>
47 static inline int acpi_madt_oem_check(char *oem_id, char *oem_table_id) { return 0; }
52 #ifdef CONFIG_X86_LOCAL_APIC
53 #include <mach_apic.h>
54 #include <mach_mpparse.h>
55 #endif /* CONFIG_X86_LOCAL_APIC */
57 static inline int gsi_irq_sharing(int gsi) { return gsi; }
61 #define BAD_MADT_ENTRY(entry, end) ( \
62 (!entry) || (unsigned long)entry + sizeof(*entry) > end || \
63 ((acpi_table_entry_header *)entry)->length != sizeof(*entry))
65 #define PREFIX "ACPI: "
67 int acpi_noirq __initdata; /* skip ACPI IRQ initialization */
68 int acpi_pci_disabled __initdata; /* skip ACPI PCI scan and IRQ initialization */
69 int acpi_ht __initdata = 1; /* enable HT */
74 EXPORT_SYMBOL(acpi_strict);
76 acpi_interrupt_flags acpi_sci_flags __initdata;
77 int acpi_sci_override_gsi __initdata;
78 int acpi_skip_timer_override __initdata;
80 #ifdef CONFIG_X86_LOCAL_APIC
81 static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE;
84 #ifndef __HAVE_ARCH_CMPXCHG
85 #warning ACPI uses CMPXCHG, i486 and later hardware
88 #define MAX_MADT_ENTRIES 256
89 u8 x86_acpiid_to_apicid[MAX_MADT_ENTRIES] =
90 {[0 ... MAX_MADT_ENTRIES - 1] = 0xff };
91 EXPORT_SYMBOL(x86_acpiid_to_apicid);
93 /* --------------------------------------------------------------------------
94 Boot-time Configuration
95 -------------------------------------------------------------------------- */
98 * The default interrupt routing model is PIC (8259). This gets
99 * overriden if IOAPICs are enumerated (below).
101 enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_PIC;
105 /* rely on all ACPI tables being in the direct mapping */
106 char *__acpi_map_table(unsigned long phys_addr, unsigned long size)
108 if (!phys_addr || !size)
111 if (phys_addr+size <= (end_pfn_map << PAGE_SHIFT) + PAGE_SIZE)
112 return __va(phys_addr);
120 * Temporarily use the virtual area starting from FIX_IO_APIC_BASE_END,
121 * to map the target physical address. The problem is that set_fixmap()
122 * provides a single page, and it is possible that the page is not
124 * By using this area, we can map up to MAX_IO_APICS pages temporarily,
125 * i.e. until the next __va_range() call.
127 * Important Safety Note: The fixed I/O APIC page numbers are *subtracted*
128 * from the fixed base. That's why we start at FIX_IO_APIC_BASE_END and
129 * count idx down while incrementing the phys address.
131 char *__acpi_map_table(unsigned long phys, unsigned long size)
133 unsigned long base, offset, mapped_size;
136 if (phys + size < 8 * 1024 * 1024)
139 offset = phys & (PAGE_SIZE - 1);
140 mapped_size = PAGE_SIZE - offset;
141 set_fixmap(FIX_ACPI_END, phys);
142 base = fix_to_virt(FIX_ACPI_END);
145 * Most cases can be covered by the below.
148 while (mapped_size < size) {
149 if (--idx < FIX_ACPI_BEGIN)
150 return NULL; /* cannot handle this */
152 set_fixmap(idx, phys);
153 mapped_size += PAGE_SIZE;
156 return ((unsigned char *)base + offset);
160 #ifdef CONFIG_PCI_MMCONFIG
161 /* The physical address of the MMCONFIG aperture. Set from ACPI tables. */
162 struct acpi_table_mcfg_config *pci_mmcfg_config;
163 int pci_mmcfg_config_num;
165 int __init acpi_parse_mcfg(unsigned long phys_addr, unsigned long size)
167 struct acpi_table_mcfg *mcfg;
171 if (!phys_addr || !size)
174 mcfg = (struct acpi_table_mcfg *)__acpi_map_table(phys_addr, size);
176 printk(KERN_WARNING PREFIX "Unable to map MCFG\n");
180 /* how many config structures do we have */
181 pci_mmcfg_config_num = 0;
182 i = size - sizeof(struct acpi_table_mcfg);
183 while (i >= sizeof(struct acpi_table_mcfg_config)) {
184 ++pci_mmcfg_config_num;
185 i -= sizeof(struct acpi_table_mcfg_config);
187 if (pci_mmcfg_config_num == 0) {
188 printk(KERN_ERR PREFIX "MMCONFIG has no entries\n");
192 config_size = pci_mmcfg_config_num * sizeof(*pci_mmcfg_config);
193 pci_mmcfg_config = kmalloc(config_size, GFP_KERNEL);
194 if (!pci_mmcfg_config) {
195 printk(KERN_WARNING PREFIX
196 "No memory for MCFG config tables\n");
200 memcpy(pci_mmcfg_config, &mcfg->config, config_size);
201 for (i = 0; i < pci_mmcfg_config_num; ++i) {
202 if (mcfg->config[i].base_reserved) {
203 printk(KERN_ERR PREFIX
204 "MMCONFIG not in low 4GB of memory\n");
205 kfree(pci_mmcfg_config);
206 pci_mmcfg_config_num = 0;
213 #endif /* CONFIG_PCI_MMCONFIG */
215 #ifdef CONFIG_X86_LOCAL_APIC
216 static int __init acpi_parse_madt(unsigned long phys_addr, unsigned long size)
218 struct acpi_table_madt *madt = NULL;
220 if (!phys_addr || !size || !cpu_has_apic)
223 madt = (struct acpi_table_madt *)__acpi_map_table(phys_addr, size);
225 printk(KERN_WARNING PREFIX "Unable to map MADT\n");
229 if (madt->lapic_address) {
230 acpi_lapic_addr = (u64) madt->lapic_address;
232 printk(KERN_DEBUG PREFIX "Local APIC address 0x%08x\n",
233 madt->lapic_address);
236 acpi_madt_oem_check(madt->header.oem_id, madt->header.oem_table_id);
242 acpi_parse_lapic(acpi_table_entry_header * header, const unsigned long end)
244 struct acpi_table_lapic *processor = NULL;
246 processor = (struct acpi_table_lapic *)header;
248 if (BAD_MADT_ENTRY(processor, end))
251 acpi_table_print_madt_entry(header);
253 /* Record local apic id only when enabled */
254 if (processor->flags.enabled)
255 x86_acpiid_to_apicid[processor->acpi_id] = processor->id;
258 * We need to register disabled CPU as well to permit
259 * counting disabled CPUs. This allows us to size
260 * cpus_possible_map more accurately, to permit
261 * to not preallocating memory for all NR_CPUS
262 * when we use CPU hotplug.
264 mp_register_lapic(processor->id, /* APIC ID */
265 processor->flags.enabled); /* Enabled? */
271 acpi_parse_lapic_addr_ovr(acpi_table_entry_header * header,
272 const unsigned long end)
274 struct acpi_table_lapic_addr_ovr *lapic_addr_ovr = NULL;
276 lapic_addr_ovr = (struct acpi_table_lapic_addr_ovr *)header;
278 if (BAD_MADT_ENTRY(lapic_addr_ovr, end))
281 acpi_lapic_addr = lapic_addr_ovr->address;
287 acpi_parse_lapic_nmi(acpi_table_entry_header * header, const unsigned long end)
289 struct acpi_table_lapic_nmi *lapic_nmi = NULL;
291 lapic_nmi = (struct acpi_table_lapic_nmi *)header;
293 if (BAD_MADT_ENTRY(lapic_nmi, end))
296 acpi_table_print_madt_entry(header);
298 if (lapic_nmi->lint != 1)
299 printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n");
304 #endif /*CONFIG_X86_LOCAL_APIC */
306 #ifdef CONFIG_X86_IO_APIC
309 acpi_parse_ioapic(acpi_table_entry_header * header, const unsigned long end)
311 struct acpi_table_ioapic *ioapic = NULL;
313 ioapic = (struct acpi_table_ioapic *)header;
315 if (BAD_MADT_ENTRY(ioapic, end))
318 acpi_table_print_madt_entry(header);
320 mp_register_ioapic(ioapic->id,
321 ioapic->address, ioapic->global_irq_base);
327 * Parse Interrupt Source Override for the ACPI SCI
329 static void acpi_sci_ioapic_setup(u32 gsi, u16 polarity, u16 trigger)
331 if (trigger == 0) /* compatible SCI trigger is level */
334 if (polarity == 0) /* compatible SCI polarity is low */
337 /* Command-line over-ride via acpi_sci= */
338 if (acpi_sci_flags.trigger)
339 trigger = acpi_sci_flags.trigger;
341 if (acpi_sci_flags.polarity)
342 polarity = acpi_sci_flags.polarity;
345 * mp_config_acpi_legacy_irqs() already setup IRQs < 16
346 * If GSI is < 16, this will update its flags,
347 * else it will create a new mp_irqs[] entry.
349 mp_override_legacy_irq(gsi, polarity, trigger, gsi);
352 * stash over-ride to indicate we've been here
353 * and for later update of acpi_fadt
355 acpi_sci_override_gsi = gsi;
360 acpi_parse_int_src_ovr(acpi_table_entry_header * header,
361 const unsigned long end)
363 struct acpi_table_int_src_ovr *intsrc = NULL;
365 intsrc = (struct acpi_table_int_src_ovr *)header;
367 if (BAD_MADT_ENTRY(intsrc, end))
370 acpi_table_print_madt_entry(header);
372 if (intsrc->bus_irq == acpi_fadt.sci_int) {
373 acpi_sci_ioapic_setup(intsrc->global_irq,
374 intsrc->flags.polarity,
375 intsrc->flags.trigger);
379 if (acpi_skip_timer_override &&
380 intsrc->bus_irq == 0 && intsrc->global_irq == 2) {
381 printk(PREFIX "BIOS IRQ0 pin2 override ignored.\n");
385 mp_override_legacy_irq(intsrc->bus_irq,
386 intsrc->flags.polarity,
387 intsrc->flags.trigger, intsrc->global_irq);
393 acpi_parse_nmi_src(acpi_table_entry_header * header, const unsigned long end)
395 struct acpi_table_nmi_src *nmi_src = NULL;
397 nmi_src = (struct acpi_table_nmi_src *)header;
399 if (BAD_MADT_ENTRY(nmi_src, end))
402 acpi_table_print_madt_entry(header);
404 /* TBD: Support nimsrc entries? */
409 #endif /* CONFIG_X86_IO_APIC */
412 * acpi_pic_sci_set_trigger()
414 * use ELCR to set PIC-mode trigger type for SCI
416 * If a PIC-mode SCI is not recognized or gives spurious IRQ7's
417 * it may require Edge Trigger -- use "acpi_sci=edge"
419 * Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers
420 * for the 8259 PIC. bit[n] = 1 means irq[n] is Level, otherwise Edge.
421 * ECLR1 is IRQ's 0-7 (IRQ 0, 1, 2 must be 0)
422 * ECLR2 is IRQ's 8-15 (IRQ 8, 13 must be 0)
425 void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger)
427 unsigned int mask = 1 << irq;
428 unsigned int old, new;
430 /* Real old ELCR mask */
431 old = inb(0x4d0) | (inb(0x4d1) << 8);
434 * If we use ACPI to set PCI irq's, then we should clear ELCR
435 * since we will set it correctly as we enable the PCI irq
438 new = acpi_noirq ? old : 0;
441 * Update SCI information in the ELCR, it isn't in the PCI
445 case 1: /* Edge - clear */
448 case 3: /* Level - set */
456 printk(PREFIX "setting ELCR to %04x (from %04x)\n", new, old);
458 outb(new >> 8, 0x4d1);
461 int acpi_gsi_to_irq(u32 gsi, unsigned int *irq)
463 #ifdef CONFIG_X86_IO_APIC
464 if (use_pci_vector() && !platform_legacy_irq(gsi))
465 *irq = IO_APIC_VECTOR(gsi);
468 *irq = gsi_irq_sharing(gsi);
473 * success: return IRQ number (>=0)
474 * failure: return < 0
476 int acpi_register_gsi(u32 gsi, int triggering, int polarity)
479 unsigned int plat_gsi = gsi;
483 * Make sure all (legacy) PCI IRQs are set as level-triggered.
485 if (acpi_irq_model == ACPI_IRQ_MODEL_PIC) {
486 extern void eisa_set_level_irq(unsigned int irq);
488 if (triggering == ACPI_LEVEL_SENSITIVE)
489 eisa_set_level_irq(gsi);
493 #ifdef CONFIG_X86_IO_APIC
494 if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC) {
495 plat_gsi = mp_register_gsi(gsi, triggering, polarity);
498 acpi_gsi_to_irq(plat_gsi, &irq);
502 EXPORT_SYMBOL(acpi_register_gsi);
505 * ACPI based hotplug support for CPU
507 #ifdef CONFIG_ACPI_HOTPLUG_CPU
508 int acpi_map_lsapic(acpi_handle handle, int *pcpu)
514 EXPORT_SYMBOL(acpi_map_lsapic);
516 int acpi_unmap_lsapic(int cpu)
522 EXPORT_SYMBOL(acpi_unmap_lsapic);
523 #endif /* CONFIG_ACPI_HOTPLUG_CPU */
525 int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base)
531 EXPORT_SYMBOL(acpi_register_ioapic);
533 int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base)
539 EXPORT_SYMBOL(acpi_unregister_ioapic);
541 static unsigned long __init
542 acpi_scan_rsdp(unsigned long start, unsigned long length)
544 unsigned long offset = 0;
545 unsigned long sig_len = sizeof("RSD PTR ") - 1;
548 * Scan all 16-byte boundaries of the physical memory region for the
551 for (offset = 0; offset < length; offset += 16) {
552 if (strncmp((char *)(phys_to_virt(start) + offset), "RSD PTR ", sig_len))
554 return (start + offset);
560 static int __init acpi_parse_sbf(unsigned long phys_addr, unsigned long size)
562 struct acpi_table_sbf *sb;
564 if (!phys_addr || !size)
567 sb = (struct acpi_table_sbf *)__acpi_map_table(phys_addr, size);
569 printk(KERN_WARNING PREFIX "Unable to map SBF\n");
573 sbf_port = sb->sbf_cmos; /* Save CMOS port */
578 #ifdef CONFIG_HPET_TIMER
580 static int __init acpi_parse_hpet(unsigned long phys, unsigned long size)
582 struct acpi_table_hpet *hpet_tbl;
587 hpet_tbl = (struct acpi_table_hpet *)__acpi_map_table(phys, size);
589 printk(KERN_WARNING PREFIX "Unable to map HPET\n");
593 if (hpet_tbl->addr.space_id != ACPI_SPACE_MEM) {
594 printk(KERN_WARNING PREFIX "HPET timers must be located in "
599 vxtime.hpet_address = hpet_tbl->addr.addrl |
600 ((long)hpet_tbl->addr.addrh << 32);
602 printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n",
603 hpet_tbl->id, vxtime.hpet_address);
606 extern unsigned long hpet_address;
608 hpet_address = hpet_tbl->addr.addrl;
609 printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n",
610 hpet_tbl->id, hpet_address);
617 #define acpi_parse_hpet NULL
620 #ifdef CONFIG_X86_PM_TIMER
621 extern u32 pmtmr_ioport;
624 static int __init acpi_parse_fadt(unsigned long phys, unsigned long size)
626 struct fadt_descriptor *fadt = NULL;
628 fadt = (struct fadt_descriptor *)__acpi_map_table(phys, size);
630 printk(KERN_WARNING PREFIX "Unable to map FADT\n");
633 /* initialize sci_int early for INT_SRC_OVR MADT parsing */
634 acpi_fadt.sci_int = fadt->sci_int;
636 /* initialize rev and apic_phys_dest_mode for x86_64 genapic */
637 acpi_fadt.revision = fadt->revision;
638 acpi_fadt.force_apic_physical_destination_mode =
639 fadt->force_apic_physical_destination_mode;
641 #ifdef CONFIG_X86_PM_TIMER
642 /* detect the location of the ACPI PM Timer */
643 if (fadt->revision >= FADT2_REVISION_ID) {
645 if (fadt->xpm_tmr_blk.address_space_id !=
646 ACPI_ADR_SPACE_SYSTEM_IO)
649 pmtmr_ioport = fadt->xpm_tmr_blk.address;
651 * "X" fields are optional extensions to the original V1.0
652 * fields, so we must selectively expand V1.0 fields if the
653 * corresponding X field is zero.
656 pmtmr_ioport = fadt->V1_pm_tmr_blk;
659 pmtmr_ioport = fadt->V1_pm_tmr_blk;
662 printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n",
668 unsigned long __init acpi_find_rsdp(void)
670 unsigned long rsdp_phys = 0;
673 if (efi.acpi20 != EFI_INVALID_TABLE_ADDR)
675 else if (efi.acpi != EFI_INVALID_TABLE_ADDR)
679 * Scan memory looking for the RSDP signature. First search EBDA (low
680 * memory) paragraphs and then search upper memory (E0000-FFFFF).
682 rsdp_phys = acpi_scan_rsdp(0, 0x400);
684 rsdp_phys = acpi_scan_rsdp(0xE0000, 0x20000);
689 #ifdef CONFIG_X86_LOCAL_APIC
691 * Parse LAPIC entries in MADT
692 * returns 0 on success, < 0 on error
694 static int __init acpi_parse_madt_lapic_entries(void)
702 * Note that the LAPIC address is obtained from the MADT (32-bit value)
703 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value).
707 acpi_table_parse_madt(ACPI_MADT_LAPIC_ADDR_OVR,
708 acpi_parse_lapic_addr_ovr, 0);
710 printk(KERN_ERR PREFIX
711 "Error parsing LAPIC address override entry\n");
715 mp_register_lapic_address(acpi_lapic_addr);
717 count = acpi_table_parse_madt(ACPI_MADT_LAPIC, acpi_parse_lapic,
720 printk(KERN_ERR PREFIX "No LAPIC entries present\n");
721 /* TBD: Cleanup to allow fallback to MPS */
723 } else if (count < 0) {
724 printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n");
725 /* TBD: Cleanup to allow fallback to MPS */
730 acpi_table_parse_madt(ACPI_MADT_LAPIC_NMI, acpi_parse_lapic_nmi, 0);
732 printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n");
733 /* TBD: Cleanup to allow fallback to MPS */
738 #endif /* CONFIG_X86_LOCAL_APIC */
740 #ifdef CONFIG_X86_IO_APIC
742 * Parse IOAPIC related entries in MADT
743 * returns 0 on success, < 0 on error
745 static int __init acpi_parse_madt_ioapic_entries(void)
750 * ACPI interpreter is required to complete interrupt setup,
751 * so if it is off, don't enumerate the io-apics with ACPI.
752 * If MPS is present, it will handle them,
753 * otherwise the system will stay in PIC mode
755 if (acpi_disabled || acpi_noirq) {
763 * if "noapic" boot option, don't look for IO-APICs
765 if (skip_ioapic_setup) {
766 printk(KERN_INFO PREFIX "Skipping IOAPIC probe "
767 "due to 'noapic' option.\n");
772 acpi_table_parse_madt(ACPI_MADT_IOAPIC, acpi_parse_ioapic,
775 printk(KERN_ERR PREFIX "No IOAPIC entries present\n");
777 } else if (count < 0) {
778 printk(KERN_ERR PREFIX "Error parsing IOAPIC entry\n");
783 acpi_table_parse_madt(ACPI_MADT_INT_SRC_OVR, acpi_parse_int_src_ovr,
786 printk(KERN_ERR PREFIX
787 "Error parsing interrupt source overrides entry\n");
788 /* TBD: Cleanup to allow fallback to MPS */
793 * If BIOS did not supply an INT_SRC_OVR for the SCI
794 * pretend we got one so we can set the SCI flags.
796 if (!acpi_sci_override_gsi)
797 acpi_sci_ioapic_setup(acpi_fadt.sci_int, 0, 0);
799 /* Fill in identity legacy mapings where no override */
800 mp_config_acpi_legacy_irqs();
803 acpi_table_parse_madt(ACPI_MADT_NMI_SRC, acpi_parse_nmi_src,
806 printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n");
807 /* TBD: Cleanup to allow fallback to MPS */
814 static inline int acpi_parse_madt_ioapic_entries(void)
818 #endif /* !CONFIG_X86_IO_APIC */
820 static void __init acpi_process_madt(void)
822 #ifdef CONFIG_X86_LOCAL_APIC
825 count = acpi_table_parse(ACPI_APIC, acpi_parse_madt);
829 * Parse MADT LAPIC entries
831 error = acpi_parse_madt_lapic_entries();
835 #ifdef CONFIG_X86_GENERICARCH
836 generic_bigsmp_probe();
839 * Parse MADT IO-APIC entries
841 error = acpi_parse_madt_ioapic_entries();
843 acpi_irq_model = ACPI_IRQ_MODEL_IOAPIC;
844 acpi_irq_balance_set(NULL);
847 smp_found_config = 1;
848 clustered_apic_check();
851 if (error == -EINVAL) {
853 * Dell Precision Workstation 410, 610 come here.
855 printk(KERN_ERR PREFIX
856 "Invalid BIOS MADT, disabling ACPI\n");
864 extern int acpi_force;
868 static int __init disable_acpi_irq(struct dmi_system_id *d)
871 printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n",
878 static int __init disable_acpi_pci(struct dmi_system_id *d)
881 printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n",
888 static int __init dmi_disable_acpi(struct dmi_system_id *d)
891 printk(KERN_NOTICE "%s detected: acpi off\n", d->ident);
895 "Warning: DMI blacklist says broken, but acpi forced\n");
901 * Limit ACPI to CPU enumeration for HT
903 static int __init force_acpi_ht(struct dmi_system_id *d)
906 printk(KERN_NOTICE "%s detected: force use of acpi=ht\n",
912 "Warning: acpi=force overrules DMI blacklist: acpi=ht\n");
918 * If your system is blacklisted here, but you find that acpi=force
919 * works for you, please contact acpi-devel@sourceforge.net
921 static struct dmi_system_id __initdata acpi_dmi_table[] = {
923 * Boxes that need ACPI disabled
926 .callback = dmi_disable_acpi,
927 .ident = "IBM Thinkpad",
929 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
930 DMI_MATCH(DMI_BOARD_NAME, "2629H1G"),
935 * Boxes that need acpi=ht
938 .callback = force_acpi_ht,
939 .ident = "FSC Primergy T850",
941 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
942 DMI_MATCH(DMI_PRODUCT_NAME, "PRIMERGY T850"),
946 .callback = force_acpi_ht,
947 .ident = "DELL GX240",
949 DMI_MATCH(DMI_BOARD_VENDOR, "Dell Computer Corporation"),
950 DMI_MATCH(DMI_BOARD_NAME, "OptiPlex GX240"),
954 .callback = force_acpi_ht,
955 .ident = "HP VISUALIZE NT Workstation",
957 DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),
958 DMI_MATCH(DMI_PRODUCT_NAME, "HP VISUALIZE NT Workstation"),
962 .callback = force_acpi_ht,
963 .ident = "Compaq Workstation W8000",
965 DMI_MATCH(DMI_SYS_VENDOR, "Compaq"),
966 DMI_MATCH(DMI_PRODUCT_NAME, "Workstation W8000"),
970 .callback = force_acpi_ht,
971 .ident = "ASUS P4B266",
973 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
974 DMI_MATCH(DMI_BOARD_NAME, "P4B266"),
978 .callback = force_acpi_ht,
979 .ident = "ASUS P2B-DS",
981 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
982 DMI_MATCH(DMI_BOARD_NAME, "P2B-DS"),
986 .callback = force_acpi_ht,
987 .ident = "ASUS CUR-DLS",
989 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
990 DMI_MATCH(DMI_BOARD_NAME, "CUR-DLS"),
994 .callback = force_acpi_ht,
995 .ident = "ABIT i440BX-W83977",
997 DMI_MATCH(DMI_BOARD_VENDOR, "ABIT <http://www.abit.com>"),
998 DMI_MATCH(DMI_BOARD_NAME, "i440BX-W83977 (BP6)"),
1002 .callback = force_acpi_ht,
1003 .ident = "IBM Bladecenter",
1005 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1006 DMI_MATCH(DMI_BOARD_NAME, "IBM eServer BladeCenter HS20"),
1010 .callback = force_acpi_ht,
1011 .ident = "IBM eServer xSeries 360",
1013 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1014 DMI_MATCH(DMI_BOARD_NAME, "eServer xSeries 360"),
1018 .callback = force_acpi_ht,
1019 .ident = "IBM eserver xSeries 330",
1021 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1022 DMI_MATCH(DMI_BOARD_NAME, "eserver xSeries 330"),
1026 .callback = force_acpi_ht,
1027 .ident = "IBM eserver xSeries 440",
1029 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1030 DMI_MATCH(DMI_PRODUCT_NAME, "eserver xSeries 440"),
1035 * Boxes that need ACPI PCI IRQ routing disabled
1038 .callback = disable_acpi_irq,
1039 .ident = "ASUS A7V",
1041 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"),
1042 DMI_MATCH(DMI_BOARD_NAME, "<A7V>"),
1043 /* newer BIOS, Revision 1011, does work */
1044 DMI_MATCH(DMI_BIOS_VERSION,
1045 "ASUS A7V ACPI BIOS Revision 1007"),
1050 * Boxes that need ACPI PCI IRQ routing and PCI scan disabled
1053 .callback = disable_acpi_pci,
1054 .ident = "ASUS PR-DLS",
1056 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
1057 DMI_MATCH(DMI_BOARD_NAME, "PR-DLS"),
1058 DMI_MATCH(DMI_BIOS_VERSION,
1059 "ASUS PR-DLS ACPI BIOS Revision 1010"),
1060 DMI_MATCH(DMI_BIOS_DATE, "03/21/2003")
1064 .callback = disable_acpi_pci,
1065 .ident = "Acer TravelMate 36x Laptop",
1067 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
1068 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"),
1074 #endif /* __i386__ */
1077 * acpi_boot_table_init() and acpi_boot_init()
1078 * called from setup_arch(), always.
1079 * 1. checksums all tables
1080 * 2. enumerates lapics
1081 * 3. enumerates io-apics
1083 * acpi_table_init() is separate to allow reading SRAT without
1084 * other side effects.
1086 * side effects of acpi_boot_init:
1087 * acpi_lapic = 1 if LAPIC found
1088 * acpi_ioapic = 1 if IOAPIC found
1089 * if (acpi_lapic && acpi_ioapic) smp_found_config = 1;
1090 * if acpi_blacklisted() acpi_disabled = 1;
1091 * acpi_irq_model=...
1094 * return value: (currently ignored)
1099 int __init acpi_boot_table_init(void)
1104 dmi_check_system(acpi_dmi_table);
1108 * If acpi_disabled, bail out
1109 * One exception: acpi=ht continues far enough to enumerate LAPICs
1111 if (acpi_disabled && !acpi_ht)
1115 * Initialize the ACPI boot-time table parser.
1117 error = acpi_table_init();
1123 acpi_table_parse(ACPI_BOOT, acpi_parse_sbf);
1126 * blacklist may disable ACPI entirely
1128 error = acpi_blacklisted();
1131 printk(KERN_WARNING PREFIX "acpi=force override\n");
1133 printk(KERN_WARNING PREFIX "Disabling ACPI support\n");
1142 int __init acpi_boot_init(void)
1145 * If acpi_disabled, bail out
1146 * One exception: acpi=ht continues far enough to enumerate LAPICs
1148 if (acpi_disabled && !acpi_ht)
1151 acpi_table_parse(ACPI_BOOT, acpi_parse_sbf);
1154 * set sci_int and PM timer address
1156 acpi_table_parse(ACPI_FADT, acpi_parse_fadt);
1159 * Process the Multiple APIC Description Table (MADT), if present
1161 acpi_process_madt();
1163 acpi_table_parse(ACPI_HPET, acpi_parse_hpet);