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/irq.h>
31 #include <linux/module.h>
32 #include <linux/dmi.h>
34 #include <asm/pgtable.h>
35 #include <asm/io_apic.h>
39 #include <asm/mpspec.h>
43 static inline void acpi_madt_oem_check(char *oem_id, char *oem_table_id) { }
44 extern void __init clustered_apic_check(void);
45 static inline int ioapic_setup_disabled(void) { return 0; }
46 #include <asm/proto.h>
50 #ifdef CONFIG_X86_LOCAL_APIC
51 #include <mach_apic.h>
52 #include <mach_mpparse.h>
53 #endif /* CONFIG_X86_LOCAL_APIC */
57 #define BAD_MADT_ENTRY(entry, end) ( \
58 (!entry) || (unsigned long)entry + sizeof(*entry) > end || \
59 ((acpi_table_entry_header *)entry)->length != sizeof(*entry))
61 #define PREFIX "ACPI: "
63 #ifdef CONFIG_ACPI_PCI
64 int acpi_noirq __initdata; /* skip ACPI IRQ initialization */
65 int acpi_pci_disabled __initdata; /* skip ACPI PCI scan and IRQ initialization */
67 int acpi_noirq __initdata = 1;
68 int acpi_pci_disabled __initdata = 1;
70 int acpi_ht __initdata = 1; /* enable HT */
75 EXPORT_SYMBOL(acpi_strict);
77 acpi_interrupt_flags acpi_sci_flags __initdata;
78 int acpi_sci_override_gsi __initdata;
79 int acpi_skip_timer_override __initdata;
81 #ifdef CONFIG_X86_LOCAL_APIC
82 static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE;
85 #ifndef __HAVE_ARCH_CMPXCHG
86 #warning ACPI uses CMPXCHG, i486 and later hardware
89 #define MAX_MADT_ENTRIES 256
90 u8 x86_acpiid_to_apicid[MAX_MADT_ENTRIES] =
91 { [0 ... MAX_MADT_ENTRIES-1] = 0xff };
92 EXPORT_SYMBOL(x86_acpiid_to_apicid);
94 /* --------------------------------------------------------------------------
95 Boot-time Configuration
96 -------------------------------------------------------------------------- */
99 * The default interrupt routing model is PIC (8259). This gets
100 * overriden if IOAPICs are enumerated (below).
102 enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_PIC;
106 /* rely on all ACPI tables being in the direct mapping */
107 char *__acpi_map_table(unsigned long phys_addr, unsigned long size)
109 if (!phys_addr || !size)
112 if (phys_addr < (end_pfn_map << PAGE_SHIFT))
113 return __va(phys_addr);
121 * Temporarily use the virtual area starting from FIX_IO_APIC_BASE_END,
122 * to map the target physical address. The problem is that set_fixmap()
123 * provides a single page, and it is possible that the page is not
125 * By using this area, we can map up to MAX_IO_APICS pages temporarily,
126 * i.e. until the next __va_range() call.
128 * Important Safety Note: The fixed I/O APIC page numbers are *subtracted*
129 * from the fixed base. That's why we start at FIX_IO_APIC_BASE_END and
130 * count idx down while incrementing the phys address.
132 char *__acpi_map_table(unsigned long phys, unsigned long size)
134 unsigned long base, offset, mapped_size;
137 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 static int __init acpi_parse_mcfg(unsigned long phys_addr, unsigned long size)
164 struct acpi_table_mcfg *mcfg;
166 if (!phys_addr || !size)
169 mcfg = (struct acpi_table_mcfg *) __acpi_map_table(phys_addr, size);
171 printk(KERN_WARNING PREFIX "Unable to map MCFG\n");
175 if (mcfg->base_reserved) {
176 printk(KERN_ERR PREFIX "MMCONFIG not in low 4GB of memory\n");
180 pci_mmcfg_base_addr = mcfg->base_address;
185 #define acpi_parse_mcfg NULL
186 #endif /* !CONFIG_PCI_MMCONFIG */
188 #ifdef CONFIG_X86_LOCAL_APIC
191 unsigned long phys_addr,
194 struct acpi_table_madt *madt = NULL;
196 if (!phys_addr || !size)
199 madt = (struct acpi_table_madt *) __acpi_map_table(phys_addr, size);
201 printk(KERN_WARNING PREFIX "Unable to map MADT\n");
205 if (madt->lapic_address) {
206 acpi_lapic_addr = (u64) madt->lapic_address;
208 printk(KERN_DEBUG PREFIX "Local APIC address 0x%08x\n",
209 madt->lapic_address);
212 acpi_madt_oem_check(madt->header.oem_id, madt->header.oem_table_id);
220 acpi_table_entry_header *header, const unsigned long end)
222 struct acpi_table_lapic *processor = NULL;
224 processor = (struct acpi_table_lapic*) header;
226 if (BAD_MADT_ENTRY(processor, end))
229 acpi_table_print_madt_entry(header);
231 /* no utility in registering a disabled processor */
232 if (processor->flags.enabled == 0)
235 x86_acpiid_to_apicid[processor->acpi_id] = processor->id;
238 processor->id, /* APIC ID */
239 processor->flags.enabled); /* Enabled? */
245 acpi_parse_lapic_addr_ovr (
246 acpi_table_entry_header *header, const unsigned long end)
248 struct acpi_table_lapic_addr_ovr *lapic_addr_ovr = NULL;
250 lapic_addr_ovr = (struct acpi_table_lapic_addr_ovr*) header;
252 if (BAD_MADT_ENTRY(lapic_addr_ovr, end))
255 acpi_lapic_addr = lapic_addr_ovr->address;
261 acpi_parse_lapic_nmi (
262 acpi_table_entry_header *header, const unsigned long end)
264 struct acpi_table_lapic_nmi *lapic_nmi = NULL;
266 lapic_nmi = (struct acpi_table_lapic_nmi*) header;
268 if (BAD_MADT_ENTRY(lapic_nmi, end))
271 acpi_table_print_madt_entry(header);
273 if (lapic_nmi->lint != 1)
274 printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n");
280 #endif /*CONFIG_X86_LOCAL_APIC*/
282 #if defined(CONFIG_X86_IO_APIC) && defined(CONFIG_ACPI_INTERPRETER)
286 acpi_table_entry_header *header, const unsigned long end)
288 struct acpi_table_ioapic *ioapic = NULL;
290 ioapic = (struct acpi_table_ioapic*) header;
292 if (BAD_MADT_ENTRY(ioapic, end))
295 acpi_table_print_madt_entry(header);
300 ioapic->global_irq_base);
306 * Parse Interrupt Source Override for the ACPI SCI
309 acpi_sci_ioapic_setup(u32 gsi, u16 polarity, u16 trigger)
311 if (trigger == 0) /* compatible SCI trigger is level */
314 if (polarity == 0) /* compatible SCI polarity is low */
317 /* Command-line over-ride via acpi_sci= */
318 if (acpi_sci_flags.trigger)
319 trigger = acpi_sci_flags.trigger;
321 if (acpi_sci_flags.polarity)
322 polarity = acpi_sci_flags.polarity;
325 * mp_config_acpi_legacy_irqs() already setup IRQs < 16
326 * If GSI is < 16, this will update its flags,
327 * else it will create a new mp_irqs[] entry.
329 mp_override_legacy_irq(gsi, polarity, trigger, gsi);
332 * stash over-ride to indicate we've been here
333 * and for later update of acpi_fadt
335 acpi_sci_override_gsi = gsi;
340 acpi_parse_int_src_ovr (
341 acpi_table_entry_header *header, const unsigned long end)
343 struct acpi_table_int_src_ovr *intsrc = NULL;
345 intsrc = (struct acpi_table_int_src_ovr*) header;
347 if (BAD_MADT_ENTRY(intsrc, end))
350 acpi_table_print_madt_entry(header);
352 if (intsrc->bus_irq == acpi_fadt.sci_int) {
353 acpi_sci_ioapic_setup(intsrc->global_irq,
354 intsrc->flags.polarity, intsrc->flags.trigger);
358 if (acpi_skip_timer_override &&
359 intsrc->bus_irq == 0 && intsrc->global_irq == 2) {
360 printk(PREFIX "BIOS IRQ0 pin2 override ignored.\n");
364 mp_override_legacy_irq (
366 intsrc->flags.polarity,
367 intsrc->flags.trigger,
376 acpi_table_entry_header *header, const unsigned long end)
378 struct acpi_table_nmi_src *nmi_src = NULL;
380 nmi_src = (struct acpi_table_nmi_src*) header;
382 if (BAD_MADT_ENTRY(nmi_src, end))
385 acpi_table_print_madt_entry(header);
387 /* TBD: Support nimsrc entries? */
392 #endif /* CONFIG_X86_IO_APIC */
394 #ifdef CONFIG_ACPI_BUS
397 * acpi_pic_sci_set_trigger()
399 * use ELCR to set PIC-mode trigger type for SCI
401 * If a PIC-mode SCI is not recognized or gives spurious IRQ7's
402 * it may require Edge Trigger -- use "acpi_sci=edge"
404 * Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers
405 * for the 8259 PIC. bit[n] = 1 means irq[n] is Level, otherwise Edge.
406 * ECLR1 is IRQ's 0-7 (IRQ 0, 1, 2 must be 0)
407 * ECLR2 is IRQ's 8-15 (IRQ 8, 13 must be 0)
411 acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger)
413 unsigned int mask = 1 << irq;
414 unsigned int old, new;
416 /* Real old ELCR mask */
417 old = inb(0x4d0) | (inb(0x4d1) << 8);
420 * If we use ACPI to set PCI irq's, then we should clear ELCR
421 * since we will set it correctly as we enable the PCI irq
424 new = acpi_noirq ? old : 0;
427 * Update SCI information in the ELCR, it isn't in the PCI
431 case 1: /* Edge - clear */
434 case 3: /* Level - set */
442 printk(PREFIX "setting ELCR to %04x (from %04x)\n", new, old);
444 outb(new >> 8, 0x4d1);
448 #endif /* CONFIG_ACPI_BUS */
450 int acpi_gsi_to_irq(u32 gsi, unsigned int *irq)
452 #ifdef CONFIG_X86_IO_APIC
453 if (use_pci_vector() && !platform_legacy_irq(gsi))
454 *irq = IO_APIC_VECTOR(gsi);
461 unsigned int acpi_register_gsi(u32 gsi, int edge_level, int active_high_low)
464 unsigned int plat_gsi = gsi;
468 * Make sure all (legacy) PCI IRQs are set as level-triggered.
470 if (acpi_irq_model == ACPI_IRQ_MODEL_PIC) {
471 extern void eisa_set_level_irq(unsigned int irq);
473 if (edge_level == ACPI_LEVEL_SENSITIVE)
474 eisa_set_level_irq(gsi);
478 #ifdef CONFIG_X86_IO_APIC
479 if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC) {
480 plat_gsi = mp_register_gsi(gsi, edge_level, active_high_low);
483 acpi_gsi_to_irq(plat_gsi, &irq);
486 EXPORT_SYMBOL(acpi_register_gsi);
489 * ACPI based hotplug support for CPU
491 #ifdef CONFIG_ACPI_HOTPLUG_CPU
493 acpi_map_lsapic(acpi_handle handle, int *pcpu)
498 EXPORT_SYMBOL(acpi_map_lsapic);
502 acpi_unmap_lsapic(int cpu)
507 EXPORT_SYMBOL(acpi_unmap_lsapic);
508 #endif /* CONFIG_ACPI_HOTPLUG_CPU */
510 static unsigned long __init
513 unsigned long length)
515 unsigned long offset = 0;
516 unsigned long sig_len = sizeof("RSD PTR ") - 1;
519 * Scan all 16-byte boundaries of the physical memory region for the
522 for (offset = 0; offset < length; offset += 16) {
523 if (strncmp((char *) (start + offset), "RSD PTR ", sig_len))
525 return (start + offset);
531 static int __init acpi_parse_sbf(unsigned long phys_addr, unsigned long size)
533 struct acpi_table_sbf *sb;
535 if (!phys_addr || !size)
538 sb = (struct acpi_table_sbf *) __acpi_map_table(phys_addr, size);
540 printk(KERN_WARNING PREFIX "Unable to map SBF\n");
544 sbf_port = sb->sbf_cmos; /* Save CMOS port */
550 #ifdef CONFIG_HPET_TIMER
552 static int __init acpi_parse_hpet(unsigned long phys, unsigned long size)
554 struct acpi_table_hpet *hpet_tbl;
559 hpet_tbl = (struct acpi_table_hpet *) __acpi_map_table(phys, size);
561 printk(KERN_WARNING PREFIX "Unable to map HPET\n");
565 if (hpet_tbl->addr.space_id != ACPI_SPACE_MEM) {
566 printk(KERN_WARNING PREFIX "HPET timers must be located in "
572 vxtime.hpet_address = hpet_tbl->addr.addrl |
573 ((long) hpet_tbl->addr.addrh << 32);
575 printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n",
576 hpet_tbl->id, vxtime.hpet_address);
579 extern unsigned long hpet_address;
581 hpet_address = hpet_tbl->addr.addrl;
582 printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n",
583 hpet_tbl->id, hpet_address);
590 #define acpi_parse_hpet NULL
593 #ifdef CONFIG_X86_PM_TIMER
594 extern u32 pmtmr_ioport;
597 static int __init acpi_parse_fadt(unsigned long phys, unsigned long size)
599 struct fadt_descriptor_rev2 *fadt = NULL;
601 fadt = (struct fadt_descriptor_rev2*) __acpi_map_table(phys,size);
603 printk(KERN_WARNING PREFIX "Unable to map FADT\n");
607 #ifdef CONFIG_ACPI_INTERPRETER
608 /* initialize sci_int early for INT_SRC_OVR MADT parsing */
609 acpi_fadt.sci_int = fadt->sci_int;
612 #ifdef CONFIG_ACPI_BUS
613 /* initialize rev and apic_phys_dest_mode for x86_64 genapic */
614 acpi_fadt.revision = fadt->revision;
615 acpi_fadt.force_apic_physical_destination_mode = fadt->force_apic_physical_destination_mode;
618 #ifdef CONFIG_X86_PM_TIMER
619 /* detect the location of the ACPI PM Timer */
620 if (fadt->revision >= FADT2_REVISION_ID) {
622 if (fadt->xpm_tmr_blk.address_space_id != ACPI_ADR_SPACE_SYSTEM_IO)
625 pmtmr_ioport = fadt->xpm_tmr_blk.address;
628 pmtmr_ioport = fadt->V1_pm_tmr_blk;
631 printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n", pmtmr_ioport);
638 acpi_find_rsdp (void)
640 unsigned long rsdp_phys = 0;
644 return __pa(efi.acpi20);
646 return __pa(efi.acpi);
649 * Scan memory looking for the RSDP signature. First search EBDA (low
650 * memory) paragraphs and then search upper memory (E0000-FFFFF).
652 rsdp_phys = acpi_scan_rsdp (0, 0x400);
654 rsdp_phys = acpi_scan_rsdp (0xE0000, 0x20000);
659 #ifdef CONFIG_X86_LOCAL_APIC
661 * Parse LAPIC entries in MADT
662 * returns 0 on success, < 0 on error
665 acpi_parse_madt_lapic_entries(void)
670 * Note that the LAPIC address is obtained from the MADT (32-bit value)
671 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value).
674 count = acpi_table_parse_madt(ACPI_MADT_LAPIC_ADDR_OVR, acpi_parse_lapic_addr_ovr, 0);
676 printk(KERN_ERR PREFIX "Error parsing LAPIC address override entry\n");
680 mp_register_lapic_address(acpi_lapic_addr);
682 count = acpi_table_parse_madt(ACPI_MADT_LAPIC, acpi_parse_lapic,
685 printk(KERN_ERR PREFIX "No LAPIC entries present\n");
686 /* TBD: Cleanup to allow fallback to MPS */
689 else if (count < 0) {
690 printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n");
691 /* TBD: Cleanup to allow fallback to MPS */
695 count = acpi_table_parse_madt(ACPI_MADT_LAPIC_NMI, acpi_parse_lapic_nmi, 0);
697 printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n");
698 /* TBD: Cleanup to allow fallback to MPS */
703 #endif /* CONFIG_X86_LOCAL_APIC */
705 #if defined(CONFIG_X86_IO_APIC) && defined(CONFIG_ACPI_INTERPRETER)
707 * Parse IOAPIC related entries in MADT
708 * returns 0 on success, < 0 on error
711 acpi_parse_madt_ioapic_entries(void)
716 * ACPI interpreter is required to complete interrupt setup,
717 * so if it is off, don't enumerate the io-apics with ACPI.
718 * If MPS is present, it will handle them,
719 * otherwise the system will stay in PIC mode
721 if (acpi_disabled || acpi_noirq) {
726 * if "noapic" boot option, don't look for IO-APICs
728 if (skip_ioapic_setup) {
729 printk(KERN_INFO PREFIX "Skipping IOAPIC probe "
730 "due to 'noapic' option.\n");
734 count = acpi_table_parse_madt(ACPI_MADT_IOAPIC, acpi_parse_ioapic, MAX_IO_APICS);
736 printk(KERN_ERR PREFIX "No IOAPIC entries present\n");
739 else if (count < 0) {
740 printk(KERN_ERR PREFIX "Error parsing IOAPIC entry\n");
744 count = acpi_table_parse_madt(ACPI_MADT_INT_SRC_OVR, acpi_parse_int_src_ovr, NR_IRQ_VECTORS);
746 printk(KERN_ERR PREFIX "Error parsing interrupt source overrides entry\n");
747 /* TBD: Cleanup to allow fallback to MPS */
752 * If BIOS did not supply an INT_SRC_OVR for the SCI
753 * pretend we got one so we can set the SCI flags.
755 if (!acpi_sci_override_gsi)
756 acpi_sci_ioapic_setup(acpi_fadt.sci_int, 0, 0);
758 /* Fill in identity legacy mapings where no override */
759 mp_config_acpi_legacy_irqs();
761 count = acpi_table_parse_madt(ACPI_MADT_NMI_SRC, acpi_parse_nmi_src, NR_IRQ_VECTORS);
763 printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n");
764 /* TBD: Cleanup to allow fallback to MPS */
771 static inline int acpi_parse_madt_ioapic_entries(void)
775 #endif /* !(CONFIG_X86_IO_APIC && CONFIG_ACPI_INTERPRETER) */
779 acpi_process_madt(void)
781 #ifdef CONFIG_X86_LOCAL_APIC
784 count = acpi_table_parse(ACPI_APIC, acpi_parse_madt);
788 * Parse MADT LAPIC entries
790 error = acpi_parse_madt_lapic_entries();
795 * Parse MADT IO-APIC entries
797 error = acpi_parse_madt_ioapic_entries();
799 acpi_irq_model = ACPI_IRQ_MODEL_IOAPIC;
800 acpi_irq_balance_set(NULL);
803 smp_found_config = 1;
804 clustered_apic_check();
807 if (error == -EINVAL) {
809 * Dell Precision Workstation 410, 610 come here.
811 printk(KERN_ERR PREFIX "Invalid BIOS MADT, disabling ACPI\n");
819 extern int acpi_force;
823 #ifdef CONFIG_ACPI_PCI
824 static int __init disable_acpi_irq(struct dmi_system_id *d)
827 printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n",
834 static int __init disable_acpi_pci(struct dmi_system_id *d)
837 printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n",
845 static int __init dmi_disable_acpi(struct dmi_system_id *d)
848 printk(KERN_NOTICE "%s detected: acpi off\n",d->ident);
852 "Warning: DMI blacklist says broken, but acpi forced\n");
858 * Limit ACPI to CPU enumeration for HT
860 static int __init force_acpi_ht(struct dmi_system_id *d)
863 printk(KERN_NOTICE "%s detected: force use of acpi=ht\n", d->ident);
868 "Warning: acpi=force overrules DMI blacklist: acpi=ht\n");
874 * If your system is blacklisted here, but you find that acpi=force
875 * works for you, please contact acpi-devel@sourceforge.net
877 static struct dmi_system_id __initdata acpi_dmi_table[] = {
879 * Boxes that need ACPI disabled
882 .callback = dmi_disable_acpi,
883 .ident = "IBM Thinkpad",
885 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
886 DMI_MATCH(DMI_BOARD_NAME, "2629H1G"),
891 * Boxes that need acpi=ht
894 .callback = force_acpi_ht,
895 .ident = "FSC Primergy T850",
897 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
898 DMI_MATCH(DMI_PRODUCT_NAME, "PRIMERGY T850"),
902 .callback = force_acpi_ht,
903 .ident = "DELL GX240",
905 DMI_MATCH(DMI_BOARD_VENDOR, "Dell Computer Corporation"),
906 DMI_MATCH(DMI_BOARD_NAME, "OptiPlex GX240"),
910 .callback = force_acpi_ht,
911 .ident = "HP VISUALIZE NT Workstation",
913 DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),
914 DMI_MATCH(DMI_PRODUCT_NAME, "HP VISUALIZE NT Workstation"),
918 .callback = force_acpi_ht,
919 .ident = "Compaq Workstation W8000",
921 DMI_MATCH(DMI_SYS_VENDOR, "Compaq"),
922 DMI_MATCH(DMI_PRODUCT_NAME, "Workstation W8000"),
926 .callback = force_acpi_ht,
927 .ident = "ASUS P4B266",
929 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
930 DMI_MATCH(DMI_BOARD_NAME, "P4B266"),
934 .callback = force_acpi_ht,
935 .ident = "ASUS P2B-DS",
937 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
938 DMI_MATCH(DMI_BOARD_NAME, "P2B-DS"),
942 .callback = force_acpi_ht,
943 .ident = "ASUS CUR-DLS",
945 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
946 DMI_MATCH(DMI_BOARD_NAME, "CUR-DLS"),
950 .callback = force_acpi_ht,
951 .ident = "ABIT i440BX-W83977",
953 DMI_MATCH(DMI_BOARD_VENDOR, "ABIT <http://www.abit.com>"),
954 DMI_MATCH(DMI_BOARD_NAME, "i440BX-W83977 (BP6)"),
958 .callback = force_acpi_ht,
959 .ident = "IBM Bladecenter",
961 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
962 DMI_MATCH(DMI_BOARD_NAME, "IBM eServer BladeCenter HS20"),
966 .callback = force_acpi_ht,
967 .ident = "IBM eServer xSeries 360",
969 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
970 DMI_MATCH(DMI_BOARD_NAME, "eServer xSeries 360"),
974 .callback = force_acpi_ht,
975 .ident = "IBM eserver xSeries 330",
977 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
978 DMI_MATCH(DMI_BOARD_NAME, "eserver xSeries 330"),
982 .callback = force_acpi_ht,
983 .ident = "IBM eserver xSeries 440",
985 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
986 DMI_MATCH(DMI_PRODUCT_NAME, "eserver xSeries 440"),
990 #ifdef CONFIG_ACPI_PCI
992 * Boxes that need ACPI PCI IRQ routing disabled
995 .callback = disable_acpi_irq,
998 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"),
999 DMI_MATCH(DMI_BOARD_NAME, "<A7V>"),
1000 /* newer BIOS, Revision 1011, does work */
1001 DMI_MATCH(DMI_BIOS_VERSION, "ASUS A7V ACPI BIOS Revision 1007"),
1006 * Boxes that need ACPI PCI IRQ routing and PCI scan disabled
1009 .callback = disable_acpi_pci,
1010 .ident = "ASUS PR-DLS",
1012 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
1013 DMI_MATCH(DMI_BOARD_NAME, "PR-DLS"),
1014 DMI_MATCH(DMI_BIOS_VERSION, "ASUS PR-DLS ACPI BIOS Revision 1010"),
1015 DMI_MATCH(DMI_BIOS_DATE, "03/21/2003")
1019 .callback = disable_acpi_pci,
1020 .ident = "Acer TravelMate 36x Laptop",
1022 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
1023 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"),
1030 #endif /* __i386__ */
1033 * acpi_boot_table_init() and acpi_boot_init()
1034 * called from setup_arch(), always.
1035 * 1. checksums all tables
1036 * 2. enumerates lapics
1037 * 3. enumerates io-apics
1039 * acpi_table_init() is separate to allow reading SRAT without
1040 * other side effects.
1042 * side effects of acpi_boot_init:
1043 * acpi_lapic = 1 if LAPIC found
1044 * acpi_ioapic = 1 if IOAPIC found
1045 * if (acpi_lapic && acpi_ioapic) smp_found_config = 1;
1046 * if acpi_blacklisted() acpi_disabled = 1;
1047 * acpi_irq_model=...
1050 * return value: (currently ignored)
1056 acpi_boot_table_init(void)
1061 dmi_check_system(acpi_dmi_table);
1065 * If acpi_disabled, bail out
1066 * One exception: acpi=ht continues far enough to enumerate LAPICs
1068 if (acpi_disabled && !acpi_ht)
1072 * Initialize the ACPI boot-time table parser.
1074 error = acpi_table_init();
1084 acpi_table_parse(ACPI_BOOT, acpi_parse_sbf);
1087 * blacklist may disable ACPI entirely
1089 error = acpi_blacklisted();
1092 printk(KERN_WARNING PREFIX "acpi=force override\n");
1094 printk(KERN_WARNING PREFIX "Disabling ACPI support\n");
1104 int __init acpi_boot_init(void)
1107 * If acpi_disabled, bail out
1108 * One exception: acpi=ht continues far enough to enumerate LAPICs
1110 if (acpi_disabled && !acpi_ht)
1113 acpi_table_parse(ACPI_BOOT, acpi_parse_sbf);
1116 * set sci_int and PM timer address
1118 acpi_table_parse(ACPI_FADT, acpi_parse_fadt);
1121 * Process the Multiple APIC Description Table (MADT), if present
1123 acpi_process_madt();
1125 acpi_table_parse(ACPI_HPET, acpi_parse_hpet);
1126 acpi_table_parse(ACPI_MCFG, acpi_parse_mcfg);