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/acpi.h>
28 #include <linux/efi.h>
29 #include <linux/module.h>
30 #include <linux/dmi.h>
31 #include <linux/irq.h>
33 #include <asm/pgtable.h>
34 #include <asm/io_apic.h>
37 #include <asm/mpspec.h>
41 extern void __init clustered_apic_check(void);
43 extern int gsi_irq_sharing(int gsi);
44 #include <asm/proto.h>
46 static inline int acpi_madt_oem_check(char *oem_id, char *oem_table_id) { return 0; }
51 #ifdef CONFIG_X86_LOCAL_APIC
52 #include <mach_apic.h>
53 #include <mach_mpparse.h>
54 #endif /* CONFIG_X86_LOCAL_APIC */
56 static inline int gsi_irq_sharing(int gsi) { return gsi; }
60 #define BAD_MADT_ENTRY(entry, end) ( \
61 (!entry) || (unsigned long)entry + sizeof(*entry) > end || \
62 ((acpi_table_entry_header *)entry)->length < sizeof(*entry))
64 #define PREFIX "ACPI: "
66 int acpi_noirq __initdata; /* skip ACPI IRQ initialization */
67 int acpi_pci_disabled __initdata; /* skip ACPI PCI scan and IRQ initialization */
68 int acpi_ht __initdata = 1; /* enable HT */
73 EXPORT_SYMBOL(acpi_strict);
75 acpi_interrupt_flags acpi_sci_flags __initdata;
76 int acpi_sci_override_gsi __initdata;
77 int acpi_skip_timer_override __initdata;
79 #ifdef CONFIG_X86_LOCAL_APIC
80 static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE;
83 #ifndef __HAVE_ARCH_CMPXCHG
84 #warning ACPI uses CMPXCHG, i486 and later hardware
87 #define MAX_MADT_ENTRIES 256
88 u8 x86_acpiid_to_apicid[MAX_MADT_ENTRIES] =
89 {[0 ... MAX_MADT_ENTRIES - 1] = 0xff };
90 EXPORT_SYMBOL(x86_acpiid_to_apicid);
92 /* --------------------------------------------------------------------------
93 Boot-time Configuration
94 -------------------------------------------------------------------------- */
97 * The default interrupt routing model is PIC (8259). This gets
98 * overriden if IOAPICs are enumerated (below).
100 enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_PIC;
102 #if defined(CONFIG_X86_64) && !defined(CONFIG_XEN)
104 /* rely on all ACPI tables being in the direct mapping */
105 char *__acpi_map_table(unsigned long phys_addr, unsigned long size)
107 if (!phys_addr || !size)
110 if (phys_addr+size <= (end_pfn_map << PAGE_SHIFT) + PAGE_SIZE)
111 return __va(phys_addr);
119 * Temporarily use the virtual area starting from FIX_IO_APIC_BASE_END,
120 * to map the target physical address. The problem is that set_fixmap()
121 * provides a single page, and it is possible that the page is not
123 * By using this area, we can map up to MAX_IO_APICS pages temporarily,
124 * i.e. until the next __va_range() call.
126 * Important Safety Note: The fixed I/O APIC page numbers are *subtracted*
127 * from the fixed base. That's why we start at FIX_IO_APIC_BASE_END and
128 * count idx down while incrementing the phys address.
130 char *__acpi_map_table(unsigned long phys, unsigned long size)
132 unsigned long base, offset, mapped_size;
136 if (phys + size < 8 * 1024 * 1024)
140 offset = phys & (PAGE_SIZE - 1);
141 mapped_size = PAGE_SIZE - offset;
142 set_fixmap(FIX_ACPI_END, phys);
143 base = fix_to_virt(FIX_ACPI_END);
146 * Most cases can be covered by the below.
149 while (mapped_size < size) {
150 if (--idx < FIX_ACPI_BEGIN)
151 return NULL; /* cannot handle this */
153 set_fixmap(idx, phys);
154 mapped_size += PAGE_SIZE;
157 return ((unsigned char *)base + offset);
161 #ifdef CONFIG_PCI_MMCONFIG
162 /* The physical address of the MMCONFIG aperture. Set from ACPI tables. */
163 struct acpi_table_mcfg_config *pci_mmcfg_config;
164 int pci_mmcfg_config_num;
166 int __init acpi_parse_mcfg(unsigned long phys_addr, unsigned long size)
168 struct acpi_table_mcfg *mcfg;
172 if (!phys_addr || !size)
175 mcfg = (struct acpi_table_mcfg *)__acpi_map_table(phys_addr, size);
177 printk(KERN_WARNING PREFIX "Unable to map MCFG\n");
181 /* how many config structures do we have */
182 pci_mmcfg_config_num = 0;
183 i = size - sizeof(struct acpi_table_mcfg);
184 while (i >= sizeof(struct acpi_table_mcfg_config)) {
185 ++pci_mmcfg_config_num;
186 i -= sizeof(struct acpi_table_mcfg_config);
188 if (pci_mmcfg_config_num == 0) {
189 printk(KERN_ERR PREFIX "MMCONFIG has no entries\n");
193 config_size = pci_mmcfg_config_num * sizeof(*pci_mmcfg_config);
194 pci_mmcfg_config = kmalloc(config_size, GFP_KERNEL);
195 if (!pci_mmcfg_config) {
196 printk(KERN_WARNING PREFIX
197 "No memory for MCFG config tables\n");
201 memcpy(pci_mmcfg_config, &mcfg->config, config_size);
202 for (i = 0; i < pci_mmcfg_config_num; ++i) {
203 if (mcfg->config[i].base_reserved) {
204 printk(KERN_ERR PREFIX
205 "MMCONFIG not in low 4GB of memory\n");
206 kfree(pci_mmcfg_config);
207 pci_mmcfg_config_num = 0;
214 #endif /* CONFIG_PCI_MMCONFIG */
216 #ifdef CONFIG_X86_LOCAL_APIC
217 static int __init acpi_parse_madt(unsigned long phys_addr, unsigned long size)
219 struct acpi_table_madt *madt = NULL;
221 if (!phys_addr || !size || !cpu_has_apic)
224 madt = (struct acpi_table_madt *)__acpi_map_table(phys_addr, size);
226 printk(KERN_WARNING PREFIX "Unable to map MADT\n");
230 if (madt->lapic_address) {
231 acpi_lapic_addr = (u64) madt->lapic_address;
233 printk(KERN_DEBUG PREFIX "Local APIC address 0x%08x\n",
234 madt->lapic_address);
237 acpi_madt_oem_check(madt->header.oem_id, madt->header.oem_table_id);
243 acpi_parse_lapic(acpi_table_entry_header * header, const unsigned long end)
245 struct acpi_table_lapic *processor = NULL;
247 processor = (struct acpi_table_lapic *)header;
249 if (BAD_MADT_ENTRY(processor, end))
252 acpi_table_print_madt_entry(header);
254 /* Record local apic id only when enabled */
255 if (processor->flags.enabled)
256 x86_acpiid_to_apicid[processor->acpi_id] = processor->id;
259 * We need to register disabled CPU as well to permit
260 * counting disabled CPUs. This allows us to size
261 * cpus_possible_map more accurately, to permit
262 * to not preallocating memory for all NR_CPUS
263 * when we use CPU hotplug.
265 mp_register_lapic(processor->id, /* APIC ID */
266 processor->flags.enabled); /* Enabled? */
272 acpi_parse_lapic_addr_ovr(acpi_table_entry_header * header,
273 const unsigned long end)
275 struct acpi_table_lapic_addr_ovr *lapic_addr_ovr = NULL;
277 lapic_addr_ovr = (struct acpi_table_lapic_addr_ovr *)header;
279 if (BAD_MADT_ENTRY(lapic_addr_ovr, end))
282 acpi_lapic_addr = lapic_addr_ovr->address;
288 acpi_parse_lapic_nmi(acpi_table_entry_header * header, const unsigned long end)
290 struct acpi_table_lapic_nmi *lapic_nmi = NULL;
292 lapic_nmi = (struct acpi_table_lapic_nmi *)header;
294 if (BAD_MADT_ENTRY(lapic_nmi, end))
297 acpi_table_print_madt_entry(header);
299 if (lapic_nmi->lint != 1)
300 printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n");
305 #endif /*CONFIG_X86_LOCAL_APIC */
307 #ifdef CONFIG_X86_IO_APIC
310 acpi_parse_ioapic(acpi_table_entry_header * header, const unsigned long end)
312 struct acpi_table_ioapic *ioapic = NULL;
314 ioapic = (struct acpi_table_ioapic *)header;
316 if (BAD_MADT_ENTRY(ioapic, end))
319 acpi_table_print_madt_entry(header);
321 mp_register_ioapic(ioapic->id,
322 ioapic->address, ioapic->global_irq_base);
328 * Parse Interrupt Source Override for the ACPI SCI
330 static void acpi_sci_ioapic_setup(u32 gsi, u16 polarity, u16 trigger)
332 if (trigger == 0) /* compatible SCI trigger is level */
335 if (polarity == 0) /* compatible SCI polarity is low */
338 /* Command-line over-ride via acpi_sci= */
339 if (acpi_sci_flags.trigger)
340 trigger = acpi_sci_flags.trigger;
342 if (acpi_sci_flags.polarity)
343 polarity = acpi_sci_flags.polarity;
346 * mp_config_acpi_legacy_irqs() already setup IRQs < 16
347 * If GSI is < 16, this will update its flags,
348 * else it will create a new mp_irqs[] entry.
350 mp_override_legacy_irq(gsi, polarity, trigger, gsi);
353 * stash over-ride to indicate we've been here
354 * and for later update of acpi_fadt
356 acpi_sci_override_gsi = gsi;
361 acpi_parse_int_src_ovr(acpi_table_entry_header * header,
362 const unsigned long end)
364 struct acpi_table_int_src_ovr *intsrc = NULL;
366 intsrc = (struct acpi_table_int_src_ovr *)header;
368 if (BAD_MADT_ENTRY(intsrc, end))
371 acpi_table_print_madt_entry(header);
373 if (intsrc->bus_irq == acpi_fadt.sci_int) {
374 acpi_sci_ioapic_setup(intsrc->global_irq,
375 intsrc->flags.polarity,
376 intsrc->flags.trigger);
380 if (acpi_skip_timer_override &&
381 intsrc->bus_irq == 0 && intsrc->global_irq == 2) {
382 printk(PREFIX "BIOS IRQ0 pin2 override ignored.\n");
386 mp_override_legacy_irq(intsrc->bus_irq,
387 intsrc->flags.polarity,
388 intsrc->flags.trigger, intsrc->global_irq);
394 acpi_parse_nmi_src(acpi_table_entry_header * header, const unsigned long end)
396 struct acpi_table_nmi_src *nmi_src = NULL;
398 nmi_src = (struct acpi_table_nmi_src *)header;
400 if (BAD_MADT_ENTRY(nmi_src, end))
403 acpi_table_print_madt_entry(header);
405 /* TBD: Support nimsrc entries? */
410 #endif /* CONFIG_X86_IO_APIC */
413 * acpi_pic_sci_set_trigger()
415 * use ELCR to set PIC-mode trigger type for SCI
417 * If a PIC-mode SCI is not recognized or gives spurious IRQ7's
418 * it may require Edge Trigger -- use "acpi_sci=edge"
420 * Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers
421 * for the 8259 PIC. bit[n] = 1 means irq[n] is Level, otherwise Edge.
422 * ECLR1 is IRQ's 0-7 (IRQ 0, 1, 2 must be 0)
423 * ECLR2 is IRQ's 8-15 (IRQ 8, 13 must be 0)
426 void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger)
428 unsigned int mask = 1 << irq;
429 unsigned int old, new;
431 /* Real old ELCR mask */
432 old = inb(0x4d0) | (inb(0x4d1) << 8);
435 * If we use ACPI to set PCI irq's, then we should clear ELCR
436 * since we will set it correctly as we enable the PCI irq
439 new = acpi_noirq ? old : 0;
442 * Update SCI information in the ELCR, it isn't in the PCI
446 case 1: /* Edge - clear */
449 case 3: /* Level - set */
457 printk(PREFIX "setting ELCR to %04x (from %04x)\n", new, old);
459 outb(new >> 8, 0x4d1);
462 int acpi_gsi_to_irq(u32 gsi, unsigned int *irq)
464 #ifdef CONFIG_X86_IO_APIC
465 if (use_pci_vector() && !platform_legacy_irq(gsi))
466 *irq = IO_APIC_VECTOR(gsi);
469 *irq = gsi_irq_sharing(gsi);
474 * success: return IRQ number (>=0)
475 * failure: return < 0
477 int acpi_register_gsi(u32 gsi, int triggering, int polarity)
480 unsigned int plat_gsi = gsi;
484 * Make sure all (legacy) PCI IRQs are set as level-triggered.
486 if (acpi_irq_model == ACPI_IRQ_MODEL_PIC) {
487 extern void eisa_set_level_irq(unsigned int irq);
489 if (triggering == ACPI_LEVEL_SENSITIVE)
490 eisa_set_level_irq(gsi);
494 #ifdef CONFIG_X86_IO_APIC
495 if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC) {
496 plat_gsi = mp_register_gsi(gsi, triggering, polarity);
499 acpi_gsi_to_irq(plat_gsi, &irq);
503 EXPORT_SYMBOL(acpi_register_gsi);
506 * ACPI based hotplug support for CPU
508 #ifdef CONFIG_ACPI_HOTPLUG_CPU
509 int acpi_map_lsapic(acpi_handle handle, int *pcpu)
515 EXPORT_SYMBOL(acpi_map_lsapic);
517 int acpi_unmap_lsapic(int cpu)
523 EXPORT_SYMBOL(acpi_unmap_lsapic);
524 #endif /* CONFIG_ACPI_HOTPLUG_CPU */
526 int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base)
532 EXPORT_SYMBOL(acpi_register_ioapic);
534 int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base)
540 EXPORT_SYMBOL(acpi_unregister_ioapic);
542 static unsigned long __init
543 acpi_scan_rsdp(unsigned long start, unsigned long length)
545 unsigned long offset = 0;
546 unsigned long sig_len = sizeof("RSD PTR ") - 1;
547 unsigned long vstart = (unsigned long)isa_bus_to_virt(start);
550 * Scan all 16-byte boundaries of the physical memory region for the
553 for (offset = 0; offset < length; offset += 16) {
554 if (strncmp((char *)(vstart + offset), "RSD PTR ", sig_len))
556 return (start + offset);
562 static int __init acpi_parse_sbf(unsigned long phys_addr, unsigned long size)
564 struct acpi_table_sbf *sb;
566 if (!phys_addr || !size)
569 sb = (struct acpi_table_sbf *)__acpi_map_table(phys_addr, size);
571 printk(KERN_WARNING PREFIX "Unable to map SBF\n");
575 sbf_port = sb->sbf_cmos; /* Save CMOS port */
580 #ifdef CONFIG_HPET_TIMER
582 static int __init acpi_parse_hpet(unsigned long phys, unsigned long size)
584 struct acpi_table_hpet *hpet_tbl;
589 hpet_tbl = (struct acpi_table_hpet *)__acpi_map_table(phys, size);
591 printk(KERN_WARNING PREFIX "Unable to map HPET\n");
595 if (hpet_tbl->addr.space_id != ACPI_SPACE_MEM) {
596 printk(KERN_WARNING PREFIX "HPET timers must be located in "
601 vxtime.hpet_address = hpet_tbl->addr.addrl |
602 ((long)hpet_tbl->addr.addrh << 32);
604 printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n",
605 hpet_tbl->id, vxtime.hpet_address);
608 extern unsigned long hpet_address;
610 hpet_address = hpet_tbl->addr.addrl;
611 printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n",
612 hpet_tbl->id, hpet_address);
619 #define acpi_parse_hpet NULL
622 #ifdef CONFIG_X86_PM_TIMER
623 extern u32 pmtmr_ioport;
626 static int __init acpi_parse_fadt(unsigned long phys, unsigned long size)
628 struct fadt_descriptor *fadt = NULL;
630 fadt = (struct fadt_descriptor *)__acpi_map_table(phys, size);
632 printk(KERN_WARNING PREFIX "Unable to map FADT\n");
635 /* initialize sci_int early for INT_SRC_OVR MADT parsing */
636 acpi_fadt.sci_int = fadt->sci_int;
638 /* initialize rev and apic_phys_dest_mode for x86_64 genapic */
639 acpi_fadt.revision = fadt->revision;
640 acpi_fadt.force_apic_physical_destination_mode =
641 fadt->force_apic_physical_destination_mode;
643 #if defined(CONFIG_X86_PM_TIMER) && !defined(CONFIG_XEN)
644 /* detect the location of the ACPI PM Timer */
645 if (fadt->revision >= FADT2_REVISION_ID) {
647 if (fadt->xpm_tmr_blk.address_space_id !=
648 ACPI_ADR_SPACE_SYSTEM_IO)
651 pmtmr_ioport = fadt->xpm_tmr_blk.address;
653 * "X" fields are optional extensions to the original V1.0
654 * fields, so we must selectively expand V1.0 fields if the
655 * corresponding X field is zero.
658 pmtmr_ioport = fadt->V1_pm_tmr_blk;
661 pmtmr_ioport = fadt->V1_pm_tmr_blk;
664 printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n",
670 unsigned long __init acpi_find_rsdp(void)
672 unsigned long rsdp_phys = 0;
675 if (efi.acpi20 != EFI_INVALID_TABLE_ADDR)
677 else if (efi.acpi != EFI_INVALID_TABLE_ADDR)
681 * Scan memory looking for the RSDP signature. First search EBDA (low
682 * memory) paragraphs and then search upper memory (E0000-FFFFF).
684 rsdp_phys = acpi_scan_rsdp(0, 0x400);
686 rsdp_phys = acpi_scan_rsdp(0xE0000, 0x20000);
691 #ifdef CONFIG_X86_LOCAL_APIC
693 * Parse LAPIC entries in MADT
694 * returns 0 on success, < 0 on error
696 static int __init acpi_parse_madt_lapic_entries(void)
704 * Note that the LAPIC address is obtained from the MADT (32-bit value)
705 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value).
709 acpi_table_parse_madt(ACPI_MADT_LAPIC_ADDR_OVR,
710 acpi_parse_lapic_addr_ovr, 0);
712 printk(KERN_ERR PREFIX
713 "Error parsing LAPIC address override entry\n");
717 mp_register_lapic_address(acpi_lapic_addr);
719 count = acpi_table_parse_madt(ACPI_MADT_LAPIC, acpi_parse_lapic,
722 printk(KERN_ERR PREFIX "No LAPIC entries present\n");
723 /* TBD: Cleanup to allow fallback to MPS */
725 } else if (count < 0) {
726 printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n");
727 /* TBD: Cleanup to allow fallback to MPS */
732 acpi_table_parse_madt(ACPI_MADT_LAPIC_NMI, acpi_parse_lapic_nmi, 0);
734 printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n");
735 /* TBD: Cleanup to allow fallback to MPS */
740 #endif /* CONFIG_X86_LOCAL_APIC */
742 #ifdef CONFIG_X86_IO_APIC
744 * Parse IOAPIC related entries in MADT
745 * returns 0 on success, < 0 on error
747 static int __init acpi_parse_madt_ioapic_entries(void)
752 * ACPI interpreter is required to complete interrupt setup,
753 * so if it is off, don't enumerate the io-apics with ACPI.
754 * If MPS is present, it will handle them,
755 * otherwise the system will stay in PIC mode
757 if (acpi_disabled || acpi_noirq) {
765 * if "noapic" boot option, don't look for IO-APICs
767 if (skip_ioapic_setup) {
768 printk(KERN_INFO PREFIX "Skipping IOAPIC probe "
769 "due to 'noapic' option.\n");
774 acpi_table_parse_madt(ACPI_MADT_IOAPIC, acpi_parse_ioapic,
777 printk(KERN_ERR PREFIX "No IOAPIC entries present\n");
779 } else if (count < 0) {
780 printk(KERN_ERR PREFIX "Error parsing IOAPIC entry\n");
785 acpi_table_parse_madt(ACPI_MADT_INT_SRC_OVR, acpi_parse_int_src_ovr,
788 printk(KERN_ERR PREFIX
789 "Error parsing interrupt source overrides entry\n");
790 /* TBD: Cleanup to allow fallback to MPS */
795 * If BIOS did not supply an INT_SRC_OVR for the SCI
796 * pretend we got one so we can set the SCI flags.
798 if (!acpi_sci_override_gsi)
799 acpi_sci_ioapic_setup(acpi_fadt.sci_int, 0, 0);
801 /* Fill in identity legacy mapings where no override */
802 mp_config_acpi_legacy_irqs();
805 acpi_table_parse_madt(ACPI_MADT_NMI_SRC, acpi_parse_nmi_src,
808 printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n");
809 /* TBD: Cleanup to allow fallback to MPS */
816 static inline int acpi_parse_madt_ioapic_entries(void)
820 #endif /* !CONFIG_X86_IO_APIC */
822 static void __init acpi_process_madt(void)
824 #ifdef CONFIG_X86_LOCAL_APIC
827 count = acpi_table_parse(ACPI_APIC, acpi_parse_madt);
831 * Parse MADT LAPIC entries
833 error = acpi_parse_madt_lapic_entries();
837 #ifdef CONFIG_X86_GENERICARCH
838 generic_bigsmp_probe();
841 * Parse MADT IO-APIC entries
843 error = acpi_parse_madt_ioapic_entries();
845 acpi_irq_model = ACPI_IRQ_MODEL_IOAPIC;
846 acpi_irq_balance_set(NULL);
849 smp_found_config = 1;
850 clustered_apic_check();
853 if (error == -EINVAL) {
855 * Dell Precision Workstation 410, 610 come here.
857 printk(KERN_ERR PREFIX
858 "Invalid BIOS MADT, disabling ACPI\n");
866 extern int acpi_force;
870 static int __init disable_acpi_irq(struct dmi_system_id *d)
873 printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n",
880 static int __init disable_acpi_pci(struct dmi_system_id *d)
883 printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n",
890 static int __init dmi_disable_acpi(struct dmi_system_id *d)
893 printk(KERN_NOTICE "%s detected: acpi off\n", d->ident);
897 "Warning: DMI blacklist says broken, but acpi forced\n");
903 * Limit ACPI to CPU enumeration for HT
905 static int __init force_acpi_ht(struct dmi_system_id *d)
908 printk(KERN_NOTICE "%s detected: force use of acpi=ht\n",
914 "Warning: acpi=force overrules DMI blacklist: acpi=ht\n");
920 * If your system is blacklisted here, but you find that acpi=force
921 * works for you, please contact acpi-devel@sourceforge.net
923 static struct dmi_system_id __initdata acpi_dmi_table[] = {
925 * Boxes that need ACPI disabled
928 .callback = dmi_disable_acpi,
929 .ident = "IBM Thinkpad",
931 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
932 DMI_MATCH(DMI_BOARD_NAME, "2629H1G"),
937 * Boxes that need acpi=ht
940 .callback = force_acpi_ht,
941 .ident = "FSC Primergy T850",
943 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
944 DMI_MATCH(DMI_PRODUCT_NAME, "PRIMERGY T850"),
948 .callback = force_acpi_ht,
949 .ident = "DELL GX240",
951 DMI_MATCH(DMI_BOARD_VENDOR, "Dell Computer Corporation"),
952 DMI_MATCH(DMI_BOARD_NAME, "OptiPlex GX240"),
956 .callback = force_acpi_ht,
957 .ident = "HP VISUALIZE NT Workstation",
959 DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),
960 DMI_MATCH(DMI_PRODUCT_NAME, "HP VISUALIZE NT Workstation"),
964 .callback = force_acpi_ht,
965 .ident = "Compaq Workstation W8000",
967 DMI_MATCH(DMI_SYS_VENDOR, "Compaq"),
968 DMI_MATCH(DMI_PRODUCT_NAME, "Workstation W8000"),
972 .callback = force_acpi_ht,
973 .ident = "ASUS P4B266",
975 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
976 DMI_MATCH(DMI_BOARD_NAME, "P4B266"),
980 .callback = force_acpi_ht,
981 .ident = "ASUS P2B-DS",
983 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
984 DMI_MATCH(DMI_BOARD_NAME, "P2B-DS"),
988 .callback = force_acpi_ht,
989 .ident = "ASUS CUR-DLS",
991 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
992 DMI_MATCH(DMI_BOARD_NAME, "CUR-DLS"),
996 .callback = force_acpi_ht,
997 .ident = "ABIT i440BX-W83977",
999 DMI_MATCH(DMI_BOARD_VENDOR, "ABIT <http://www.abit.com>"),
1000 DMI_MATCH(DMI_BOARD_NAME, "i440BX-W83977 (BP6)"),
1004 .callback = force_acpi_ht,
1005 .ident = "IBM Bladecenter",
1007 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1008 DMI_MATCH(DMI_BOARD_NAME, "IBM eServer BladeCenter HS20"),
1012 .callback = force_acpi_ht,
1013 .ident = "IBM eServer xSeries 360",
1015 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1016 DMI_MATCH(DMI_BOARD_NAME, "eServer xSeries 360"),
1020 .callback = force_acpi_ht,
1021 .ident = "IBM eserver xSeries 330",
1023 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1024 DMI_MATCH(DMI_BOARD_NAME, "eserver xSeries 330"),
1028 .callback = force_acpi_ht,
1029 .ident = "IBM eserver xSeries 440",
1031 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1032 DMI_MATCH(DMI_PRODUCT_NAME, "eserver xSeries 440"),
1037 * Boxes that need ACPI PCI IRQ routing disabled
1040 .callback = disable_acpi_irq,
1041 .ident = "ASUS A7V",
1043 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"),
1044 DMI_MATCH(DMI_BOARD_NAME, "<A7V>"),
1045 /* newer BIOS, Revision 1011, does work */
1046 DMI_MATCH(DMI_BIOS_VERSION,
1047 "ASUS A7V ACPI BIOS Revision 1007"),
1052 * Boxes that need ACPI PCI IRQ routing and PCI scan disabled
1055 .callback = disable_acpi_pci,
1056 .ident = "ASUS PR-DLS",
1058 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
1059 DMI_MATCH(DMI_BOARD_NAME, "PR-DLS"),
1060 DMI_MATCH(DMI_BIOS_VERSION,
1061 "ASUS PR-DLS ACPI BIOS Revision 1010"),
1062 DMI_MATCH(DMI_BIOS_DATE, "03/21/2003")
1066 .callback = disable_acpi_pci,
1067 .ident = "Acer TravelMate 36x Laptop",
1069 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
1070 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"),
1076 #endif /* __i386__ */
1079 * acpi_boot_table_init() and acpi_boot_init()
1080 * called from setup_arch(), always.
1081 * 1. checksums all tables
1082 * 2. enumerates lapics
1083 * 3. enumerates io-apics
1085 * acpi_table_init() is separate to allow reading SRAT without
1086 * other side effects.
1088 * side effects of acpi_boot_init:
1089 * acpi_lapic = 1 if LAPIC found
1090 * acpi_ioapic = 1 if IOAPIC found
1091 * if (acpi_lapic && acpi_ioapic) smp_found_config = 1;
1092 * if acpi_blacklisted() acpi_disabled = 1;
1093 * acpi_irq_model=...
1096 * return value: (currently ignored)
1101 int __init acpi_boot_table_init(void)
1106 dmi_check_system(acpi_dmi_table);
1110 * If acpi_disabled, bail out
1111 * One exception: acpi=ht continues far enough to enumerate LAPICs
1113 if (acpi_disabled && !acpi_ht)
1117 * Initialize the ACPI boot-time table parser.
1119 error = acpi_table_init();
1125 acpi_table_parse(ACPI_BOOT, acpi_parse_sbf);
1128 * blacklist may disable ACPI entirely
1130 error = acpi_blacklisted();
1133 printk(KERN_WARNING PREFIX "acpi=force override\n");
1135 printk(KERN_WARNING PREFIX "Disabling ACPI support\n");
1144 int __init acpi_boot_init(void)
1147 * If acpi_disabled, bail out
1148 * One exception: acpi=ht continues far enough to enumerate LAPICs
1150 if (acpi_disabled && !acpi_ht)
1153 acpi_table_parse(ACPI_BOOT, acpi_parse_sbf);
1156 * set sci_int and PM timer address
1158 acpi_table_parse(ACPI_FADT, acpi_parse_fadt);
1161 * Process the Multiple APIC Description Table (MADT), if present
1163 acpi_process_madt();
1165 acpi_table_parse(ACPI_HPET, acpi_parse_hpet);