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>
49 #ifdef CONFIG_X86_LOCAL_APIC
50 #include <mach_apic.h>
51 #include <mach_mpparse.h>
52 #endif /* CONFIG_X86_LOCAL_APIC */
54 static inline int gsi_irq_sharing(int gsi) { return gsi; }
58 #define BAD_MADT_ENTRY(entry, end) ( \
59 (!entry) || (unsigned long)entry + sizeof(*entry) > end || \
60 ((acpi_table_entry_header *)entry)->length != sizeof(*entry))
62 #define PREFIX "ACPI: "
64 int acpi_noirq __initdata; /* skip ACPI IRQ initialization */
65 int acpi_pci_disabled __initdata; /* skip ACPI PCI scan and IRQ initialization */
66 int acpi_ht __initdata = 1; /* enable HT */
71 EXPORT_SYMBOL(acpi_strict);
73 acpi_interrupt_flags acpi_sci_flags __initdata;
74 int acpi_sci_override_gsi __initdata;
75 int acpi_skip_timer_override __initdata;
77 #ifdef CONFIG_X86_LOCAL_APIC
78 static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE;
81 #ifndef __HAVE_ARCH_CMPXCHG
82 #warning ACPI uses CMPXCHG, i486 and later hardware
85 #define MAX_MADT_ENTRIES 256
86 u8 x86_acpiid_to_apicid[MAX_MADT_ENTRIES] =
87 {[0 ... MAX_MADT_ENTRIES - 1] = 0xff };
88 EXPORT_SYMBOL(x86_acpiid_to_apicid);
90 /* --------------------------------------------------------------------------
91 Boot-time Configuration
92 -------------------------------------------------------------------------- */
95 * The default interrupt routing model is PIC (8259). This gets
96 * overriden if IOAPICs are enumerated (below).
98 enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_PIC;
102 /* rely on all ACPI tables being in the direct mapping */
103 char *__acpi_map_table(unsigned long phys_addr, unsigned long size)
105 if (!phys_addr || !size)
108 if (phys_addr+size <= (end_pfn_map << PAGE_SHIFT) + PAGE_SIZE)
109 return __va(phys_addr);
117 * Temporarily use the virtual area starting from FIX_IO_APIC_BASE_END,
118 * to map the target physical address. The problem is that set_fixmap()
119 * provides a single page, and it is possible that the page is not
121 * By using this area, we can map up to MAX_IO_APICS pages temporarily,
122 * i.e. until the next __va_range() call.
124 * Important Safety Note: The fixed I/O APIC page numbers are *subtracted*
125 * from the fixed base. That's why we start at FIX_IO_APIC_BASE_END and
126 * count idx down while incrementing the phys address.
128 char *__acpi_map_table(unsigned long phys, unsigned long size)
130 unsigned long base, offset, mapped_size;
133 if (phys + size < 8 * 1024 * 1024)
136 offset = phys & (PAGE_SIZE - 1);
137 mapped_size = PAGE_SIZE - offset;
138 set_fixmap(FIX_ACPI_END, phys);
139 base = fix_to_virt(FIX_ACPI_END);
142 * Most cases can be covered by the below.
145 while (mapped_size < size) {
146 if (--idx < FIX_ACPI_BEGIN)
147 return NULL; /* cannot handle this */
149 set_fixmap(idx, phys);
150 mapped_size += PAGE_SIZE;
153 return ((unsigned char *)base + offset);
157 #ifdef CONFIG_PCI_MMCONFIG
158 /* The physical address of the MMCONFIG aperture. Set from ACPI tables. */
159 struct acpi_table_mcfg_config *pci_mmcfg_config;
160 int pci_mmcfg_config_num;
162 int __init acpi_parse_mcfg(unsigned long phys_addr, unsigned long size)
164 struct acpi_table_mcfg *mcfg;
168 if (!phys_addr || !size)
171 mcfg = (struct acpi_table_mcfg *)__acpi_map_table(phys_addr, size);
173 printk(KERN_WARNING PREFIX "Unable to map MCFG\n");
177 /* how many config structures do we have */
178 pci_mmcfg_config_num = 0;
179 i = size - sizeof(struct acpi_table_mcfg);
180 while (i >= sizeof(struct acpi_table_mcfg_config)) {
181 ++pci_mmcfg_config_num;
182 i -= sizeof(struct acpi_table_mcfg_config);
184 if (pci_mmcfg_config_num == 0) {
185 printk(KERN_ERR PREFIX "MMCONFIG has no entries\n");
189 config_size = pci_mmcfg_config_num * sizeof(*pci_mmcfg_config);
190 pci_mmcfg_config = kmalloc(config_size, GFP_KERNEL);
191 if (!pci_mmcfg_config) {
192 printk(KERN_WARNING PREFIX
193 "No memory for MCFG config tables\n");
197 memcpy(pci_mmcfg_config, &mcfg->config, config_size);
198 for (i = 0; i < pci_mmcfg_config_num; ++i) {
199 if (mcfg->config[i].base_reserved) {
200 printk(KERN_ERR PREFIX
201 "MMCONFIG not in low 4GB of memory\n");
208 #endif /* CONFIG_PCI_MMCONFIG */
210 #ifdef CONFIG_X86_LOCAL_APIC
211 static int __init acpi_parse_madt(unsigned long phys_addr, unsigned long size)
213 struct acpi_table_madt *madt = NULL;
215 if (!phys_addr || !size)
218 madt = (struct acpi_table_madt *)__acpi_map_table(phys_addr, size);
220 printk(KERN_WARNING PREFIX "Unable to map MADT\n");
224 if (madt->lapic_address) {
225 acpi_lapic_addr = (u64) madt->lapic_address;
227 printk(KERN_DEBUG PREFIX "Local APIC address 0x%08x\n",
228 madt->lapic_address);
231 acpi_madt_oem_check(madt->header.oem_id, madt->header.oem_table_id);
237 acpi_parse_lapic(acpi_table_entry_header * header, const unsigned long end)
239 struct acpi_table_lapic *processor = NULL;
241 processor = (struct acpi_table_lapic *)header;
243 if (BAD_MADT_ENTRY(processor, end))
246 acpi_table_print_madt_entry(header);
248 /* Record local apic id only when enabled */
249 if (processor->flags.enabled)
250 x86_acpiid_to_apicid[processor->acpi_id] = processor->id;
253 * We need to register disabled CPU as well to permit
254 * counting disabled CPUs. This allows us to size
255 * cpus_possible_map more accurately, to permit
256 * to not preallocating memory for all NR_CPUS
257 * when we use CPU hotplug.
259 mp_register_lapic(processor->id, /* APIC ID */
260 processor->flags.enabled); /* Enabled? */
266 acpi_parse_lapic_addr_ovr(acpi_table_entry_header * header,
267 const unsigned long end)
269 struct acpi_table_lapic_addr_ovr *lapic_addr_ovr = NULL;
271 lapic_addr_ovr = (struct acpi_table_lapic_addr_ovr *)header;
273 if (BAD_MADT_ENTRY(lapic_addr_ovr, end))
276 acpi_lapic_addr = lapic_addr_ovr->address;
282 acpi_parse_lapic_nmi(acpi_table_entry_header * header, const unsigned long end)
284 struct acpi_table_lapic_nmi *lapic_nmi = NULL;
286 lapic_nmi = (struct acpi_table_lapic_nmi *)header;
288 if (BAD_MADT_ENTRY(lapic_nmi, end))
291 acpi_table_print_madt_entry(header);
293 if (lapic_nmi->lint != 1)
294 printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n");
299 #endif /*CONFIG_X86_LOCAL_APIC */
301 #ifdef CONFIG_X86_IO_APIC
304 acpi_parse_ioapic(acpi_table_entry_header * header, const unsigned long end)
306 struct acpi_table_ioapic *ioapic = NULL;
308 ioapic = (struct acpi_table_ioapic *)header;
310 if (BAD_MADT_ENTRY(ioapic, end))
313 acpi_table_print_madt_entry(header);
315 mp_register_ioapic(ioapic->id,
316 ioapic->address, ioapic->global_irq_base);
322 * Parse Interrupt Source Override for the ACPI SCI
324 static void acpi_sci_ioapic_setup(u32 gsi, u16 polarity, u16 trigger)
326 if (trigger == 0) /* compatible SCI trigger is level */
329 if (polarity == 0) /* compatible SCI polarity is low */
332 /* Command-line over-ride via acpi_sci= */
333 if (acpi_sci_flags.trigger)
334 trigger = acpi_sci_flags.trigger;
336 if (acpi_sci_flags.polarity)
337 polarity = acpi_sci_flags.polarity;
340 * mp_config_acpi_legacy_irqs() already setup IRQs < 16
341 * If GSI is < 16, this will update its flags,
342 * else it will create a new mp_irqs[] entry.
344 mp_override_legacy_irq(gsi, polarity, trigger, gsi);
347 * stash over-ride to indicate we've been here
348 * and for later update of acpi_fadt
350 acpi_sci_override_gsi = gsi;
355 acpi_parse_int_src_ovr(acpi_table_entry_header * header,
356 const unsigned long end)
358 struct acpi_table_int_src_ovr *intsrc = NULL;
360 intsrc = (struct acpi_table_int_src_ovr *)header;
362 if (BAD_MADT_ENTRY(intsrc, end))
365 acpi_table_print_madt_entry(header);
367 if (intsrc->bus_irq == acpi_fadt.sci_int) {
368 acpi_sci_ioapic_setup(intsrc->global_irq,
369 intsrc->flags.polarity,
370 intsrc->flags.trigger);
374 if (acpi_skip_timer_override &&
375 intsrc->bus_irq == 0 && intsrc->global_irq == 2) {
376 printk(PREFIX "BIOS IRQ0 pin2 override ignored.\n");
380 mp_override_legacy_irq(intsrc->bus_irq,
381 intsrc->flags.polarity,
382 intsrc->flags.trigger, intsrc->global_irq);
388 acpi_parse_nmi_src(acpi_table_entry_header * header, const unsigned long end)
390 struct acpi_table_nmi_src *nmi_src = NULL;
392 nmi_src = (struct acpi_table_nmi_src *)header;
394 if (BAD_MADT_ENTRY(nmi_src, end))
397 acpi_table_print_madt_entry(header);
399 /* TBD: Support nimsrc entries? */
404 #endif /* CONFIG_X86_IO_APIC */
407 * acpi_pic_sci_set_trigger()
409 * use ELCR to set PIC-mode trigger type for SCI
411 * If a PIC-mode SCI is not recognized or gives spurious IRQ7's
412 * it may require Edge Trigger -- use "acpi_sci=edge"
414 * Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers
415 * for the 8259 PIC. bit[n] = 1 means irq[n] is Level, otherwise Edge.
416 * ECLR1 is IRQ's 0-7 (IRQ 0, 1, 2 must be 0)
417 * ECLR2 is IRQ's 8-15 (IRQ 8, 13 must be 0)
420 void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger)
422 unsigned int mask = 1 << irq;
423 unsigned int old, new;
425 /* Real old ELCR mask */
426 old = inb(0x4d0) | (inb(0x4d1) << 8);
429 * If we use ACPI to set PCI irq's, then we should clear ELCR
430 * since we will set it correctly as we enable the PCI irq
433 new = acpi_noirq ? old : 0;
436 * Update SCI information in the ELCR, it isn't in the PCI
440 case 1: /* Edge - clear */
443 case 3: /* Level - set */
451 printk(PREFIX "setting ELCR to %04x (from %04x)\n", new, old);
453 outb(new >> 8, 0x4d1);
456 int acpi_gsi_to_irq(u32 gsi, unsigned int *irq)
458 #ifdef CONFIG_X86_IO_APIC
459 if (use_pci_vector() && !platform_legacy_irq(gsi))
460 *irq = IO_APIC_VECTOR(gsi);
463 *irq = gsi_irq_sharing(gsi);
468 * success: return IRQ number (>=0)
469 * failure: return < 0
471 int acpi_register_gsi(u32 gsi, int triggering, int polarity)
474 unsigned int plat_gsi = gsi;
478 * Make sure all (legacy) PCI IRQs are set as level-triggered.
480 if (acpi_irq_model == ACPI_IRQ_MODEL_PIC) {
481 extern void eisa_set_level_irq(unsigned int irq);
483 if (triggering == ACPI_LEVEL_SENSITIVE)
484 eisa_set_level_irq(gsi);
488 #ifdef CONFIG_X86_IO_APIC
489 if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC) {
490 plat_gsi = mp_register_gsi(gsi, triggering, polarity);
493 acpi_gsi_to_irq(plat_gsi, &irq);
497 EXPORT_SYMBOL(acpi_register_gsi);
500 * ACPI based hotplug support for CPU
502 #ifdef CONFIG_ACPI_HOTPLUG_CPU
503 int acpi_map_lsapic(acpi_handle handle, int *pcpu)
509 EXPORT_SYMBOL(acpi_map_lsapic);
511 int acpi_unmap_lsapic(int cpu)
517 EXPORT_SYMBOL(acpi_unmap_lsapic);
518 #endif /* CONFIG_ACPI_HOTPLUG_CPU */
520 int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base)
526 EXPORT_SYMBOL(acpi_register_ioapic);
528 int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base)
534 EXPORT_SYMBOL(acpi_unregister_ioapic);
536 static unsigned long __init
537 acpi_scan_rsdp(unsigned long start, unsigned long length)
539 unsigned long offset = 0;
540 unsigned long sig_len = sizeof("RSD PTR ") - 1;
543 * Scan all 16-byte boundaries of the physical memory region for the
546 for (offset = 0; offset < length; offset += 16) {
547 if (strncmp((char *)(phys_to_virt(start) + offset), "RSD PTR ", sig_len))
549 return (start + offset);
555 static int __init acpi_parse_sbf(unsigned long phys_addr, unsigned long size)
557 struct acpi_table_sbf *sb;
559 if (!phys_addr || !size)
562 sb = (struct acpi_table_sbf *)__acpi_map_table(phys_addr, size);
564 printk(KERN_WARNING PREFIX "Unable to map SBF\n");
568 sbf_port = sb->sbf_cmos; /* Save CMOS port */
573 #ifdef CONFIG_HPET_TIMER
575 static int __init acpi_parse_hpet(unsigned long phys, unsigned long size)
577 struct acpi_table_hpet *hpet_tbl;
582 hpet_tbl = (struct acpi_table_hpet *)__acpi_map_table(phys, size);
584 printk(KERN_WARNING PREFIX "Unable to map HPET\n");
588 if (hpet_tbl->addr.space_id != ACPI_SPACE_MEM) {
589 printk(KERN_WARNING PREFIX "HPET timers must be located in "
594 vxtime.hpet_address = hpet_tbl->addr.addrl |
595 ((long)hpet_tbl->addr.addrh << 32);
597 printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n",
598 hpet_tbl->id, vxtime.hpet_address);
601 extern unsigned long hpet_address;
603 hpet_address = hpet_tbl->addr.addrl;
604 printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n",
605 hpet_tbl->id, hpet_address);
612 #define acpi_parse_hpet NULL
615 #ifdef CONFIG_X86_PM_TIMER
616 extern u32 pmtmr_ioport;
619 static int __init acpi_parse_fadt(unsigned long phys, unsigned long size)
621 struct fadt_descriptor_rev2 *fadt = NULL;
623 fadt = (struct fadt_descriptor_rev2 *)__acpi_map_table(phys, size);
625 printk(KERN_WARNING PREFIX "Unable to map FADT\n");
628 /* initialize sci_int early for INT_SRC_OVR MADT parsing */
629 acpi_fadt.sci_int = fadt->sci_int;
631 /* initialize rev and apic_phys_dest_mode for x86_64 genapic */
632 acpi_fadt.revision = fadt->revision;
633 acpi_fadt.force_apic_physical_destination_mode =
634 fadt->force_apic_physical_destination_mode;
636 #ifdef CONFIG_X86_PM_TIMER
637 /* detect the location of the ACPI PM Timer */
638 if (fadt->revision >= FADT2_REVISION_ID) {
640 if (fadt->xpm_tmr_blk.address_space_id !=
641 ACPI_ADR_SPACE_SYSTEM_IO)
644 pmtmr_ioport = fadt->xpm_tmr_blk.address;
646 * "X" fields are optional extensions to the original V1.0
647 * fields, so we must selectively expand V1.0 fields if the
648 * corresponding X field is zero.
651 pmtmr_ioport = fadt->V1_pm_tmr_blk;
654 pmtmr_ioport = fadt->V1_pm_tmr_blk;
657 printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n",
663 unsigned long __init acpi_find_rsdp(void)
665 unsigned long rsdp_phys = 0;
669 return __pa(efi.acpi20);
671 return __pa(efi.acpi);
674 * Scan memory looking for the RSDP signature. First search EBDA (low
675 * memory) paragraphs and then search upper memory (E0000-FFFFF).
677 rsdp_phys = acpi_scan_rsdp(0, 0x400);
679 rsdp_phys = acpi_scan_rsdp(0xE0000, 0x20000);
684 #ifdef CONFIG_X86_LOCAL_APIC
686 * Parse LAPIC entries in MADT
687 * returns 0 on success, < 0 on error
689 static int __init acpi_parse_madt_lapic_entries(void)
694 * Note that the LAPIC address is obtained from the MADT (32-bit value)
695 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value).
699 acpi_table_parse_madt(ACPI_MADT_LAPIC_ADDR_OVR,
700 acpi_parse_lapic_addr_ovr, 0);
702 printk(KERN_ERR PREFIX
703 "Error parsing LAPIC address override entry\n");
707 mp_register_lapic_address(acpi_lapic_addr);
709 count = acpi_table_parse_madt(ACPI_MADT_LAPIC, acpi_parse_lapic,
712 printk(KERN_ERR PREFIX "No LAPIC entries present\n");
713 /* TBD: Cleanup to allow fallback to MPS */
715 } else if (count < 0) {
716 printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n");
717 /* TBD: Cleanup to allow fallback to MPS */
722 acpi_table_parse_madt(ACPI_MADT_LAPIC_NMI, acpi_parse_lapic_nmi, 0);
724 printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n");
725 /* TBD: Cleanup to allow fallback to MPS */
730 #endif /* CONFIG_X86_LOCAL_APIC */
732 #ifdef CONFIG_X86_IO_APIC
734 * Parse IOAPIC related entries in MADT
735 * returns 0 on success, < 0 on error
737 static int __init acpi_parse_madt_ioapic_entries(void)
742 * ACPI interpreter is required to complete interrupt setup,
743 * so if it is off, don't enumerate the io-apics with ACPI.
744 * If MPS is present, it will handle them,
745 * otherwise the system will stay in PIC mode
747 if (acpi_disabled || acpi_noirq) {
752 * if "noapic" boot option, don't look for IO-APICs
754 if (skip_ioapic_setup) {
755 printk(KERN_INFO PREFIX "Skipping IOAPIC probe "
756 "due to 'noapic' option.\n");
761 acpi_table_parse_madt(ACPI_MADT_IOAPIC, acpi_parse_ioapic,
764 printk(KERN_ERR PREFIX "No IOAPIC entries present\n");
766 } else if (count < 0) {
767 printk(KERN_ERR PREFIX "Error parsing IOAPIC entry\n");
772 acpi_table_parse_madt(ACPI_MADT_INT_SRC_OVR, acpi_parse_int_src_ovr,
775 printk(KERN_ERR PREFIX
776 "Error parsing interrupt source overrides entry\n");
777 /* TBD: Cleanup to allow fallback to MPS */
782 * If BIOS did not supply an INT_SRC_OVR for the SCI
783 * pretend we got one so we can set the SCI flags.
785 if (!acpi_sci_override_gsi)
786 acpi_sci_ioapic_setup(acpi_fadt.sci_int, 0, 0);
788 /* Fill in identity legacy mapings where no override */
789 mp_config_acpi_legacy_irqs();
792 acpi_table_parse_madt(ACPI_MADT_NMI_SRC, acpi_parse_nmi_src,
795 printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n");
796 /* TBD: Cleanup to allow fallback to MPS */
803 static inline int acpi_parse_madt_ioapic_entries(void)
807 #endif /* !CONFIG_X86_IO_APIC */
809 static void __init acpi_process_madt(void)
811 #ifdef CONFIG_X86_LOCAL_APIC
814 count = acpi_table_parse(ACPI_APIC, acpi_parse_madt);
818 * Parse MADT LAPIC entries
820 error = acpi_parse_madt_lapic_entries();
824 #ifdef CONFIG_X86_GENERICARCH
825 generic_bigsmp_probe();
828 * Parse MADT IO-APIC entries
830 error = acpi_parse_madt_ioapic_entries();
832 acpi_irq_model = ACPI_IRQ_MODEL_IOAPIC;
833 acpi_irq_balance_set(NULL);
836 smp_found_config = 1;
837 clustered_apic_check();
840 if (error == -EINVAL) {
842 * Dell Precision Workstation 410, 610 come here.
844 printk(KERN_ERR PREFIX
845 "Invalid BIOS MADT, disabling ACPI\n");
853 extern int acpi_force;
857 static int __init disable_acpi_irq(struct dmi_system_id *d)
860 printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n",
867 static int __init disable_acpi_pci(struct dmi_system_id *d)
870 printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n",
877 static int __init dmi_disable_acpi(struct dmi_system_id *d)
880 printk(KERN_NOTICE "%s detected: acpi off\n", d->ident);
884 "Warning: DMI blacklist says broken, but acpi forced\n");
890 * Limit ACPI to CPU enumeration for HT
892 static int __init force_acpi_ht(struct dmi_system_id *d)
895 printk(KERN_NOTICE "%s detected: force use of acpi=ht\n",
901 "Warning: acpi=force overrules DMI blacklist: acpi=ht\n");
907 * If your system is blacklisted here, but you find that acpi=force
908 * works for you, please contact acpi-devel@sourceforge.net
910 static struct dmi_system_id __initdata acpi_dmi_table[] = {
912 * Boxes that need ACPI disabled
915 .callback = dmi_disable_acpi,
916 .ident = "IBM Thinkpad",
918 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
919 DMI_MATCH(DMI_BOARD_NAME, "2629H1G"),
924 * Boxes that need acpi=ht
927 .callback = force_acpi_ht,
928 .ident = "FSC Primergy T850",
930 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
931 DMI_MATCH(DMI_PRODUCT_NAME, "PRIMERGY T850"),
935 .callback = force_acpi_ht,
936 .ident = "DELL GX240",
938 DMI_MATCH(DMI_BOARD_VENDOR, "Dell Computer Corporation"),
939 DMI_MATCH(DMI_BOARD_NAME, "OptiPlex GX240"),
943 .callback = force_acpi_ht,
944 .ident = "HP VISUALIZE NT Workstation",
946 DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),
947 DMI_MATCH(DMI_PRODUCT_NAME, "HP VISUALIZE NT Workstation"),
951 .callback = force_acpi_ht,
952 .ident = "Compaq Workstation W8000",
954 DMI_MATCH(DMI_SYS_VENDOR, "Compaq"),
955 DMI_MATCH(DMI_PRODUCT_NAME, "Workstation W8000"),
959 .callback = force_acpi_ht,
960 .ident = "ASUS P4B266",
962 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
963 DMI_MATCH(DMI_BOARD_NAME, "P4B266"),
967 .callback = force_acpi_ht,
968 .ident = "ASUS P2B-DS",
970 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
971 DMI_MATCH(DMI_BOARD_NAME, "P2B-DS"),
975 .callback = force_acpi_ht,
976 .ident = "ASUS CUR-DLS",
978 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
979 DMI_MATCH(DMI_BOARD_NAME, "CUR-DLS"),
983 .callback = force_acpi_ht,
984 .ident = "ABIT i440BX-W83977",
986 DMI_MATCH(DMI_BOARD_VENDOR, "ABIT <http://www.abit.com>"),
987 DMI_MATCH(DMI_BOARD_NAME, "i440BX-W83977 (BP6)"),
991 .callback = force_acpi_ht,
992 .ident = "IBM Bladecenter",
994 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
995 DMI_MATCH(DMI_BOARD_NAME, "IBM eServer BladeCenter HS20"),
999 .callback = force_acpi_ht,
1000 .ident = "IBM eServer xSeries 360",
1002 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1003 DMI_MATCH(DMI_BOARD_NAME, "eServer xSeries 360"),
1007 .callback = force_acpi_ht,
1008 .ident = "IBM eserver xSeries 330",
1010 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1011 DMI_MATCH(DMI_BOARD_NAME, "eserver xSeries 330"),
1015 .callback = force_acpi_ht,
1016 .ident = "IBM eserver xSeries 440",
1018 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1019 DMI_MATCH(DMI_PRODUCT_NAME, "eserver xSeries 440"),
1024 * Boxes that need ACPI PCI IRQ routing disabled
1027 .callback = disable_acpi_irq,
1028 .ident = "ASUS A7V",
1030 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"),
1031 DMI_MATCH(DMI_BOARD_NAME, "<A7V>"),
1032 /* newer BIOS, Revision 1011, does work */
1033 DMI_MATCH(DMI_BIOS_VERSION,
1034 "ASUS A7V ACPI BIOS Revision 1007"),
1039 * Boxes that need ACPI PCI IRQ routing and PCI scan disabled
1042 .callback = disable_acpi_pci,
1043 .ident = "ASUS PR-DLS",
1045 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
1046 DMI_MATCH(DMI_BOARD_NAME, "PR-DLS"),
1047 DMI_MATCH(DMI_BIOS_VERSION,
1048 "ASUS PR-DLS ACPI BIOS Revision 1010"),
1049 DMI_MATCH(DMI_BIOS_DATE, "03/21/2003")
1053 .callback = disable_acpi_pci,
1054 .ident = "Acer TravelMate 36x Laptop",
1056 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
1057 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"),
1063 #endif /* __i386__ */
1066 * acpi_boot_table_init() and acpi_boot_init()
1067 * called from setup_arch(), always.
1068 * 1. checksums all tables
1069 * 2. enumerates lapics
1070 * 3. enumerates io-apics
1072 * acpi_table_init() is separate to allow reading SRAT without
1073 * other side effects.
1075 * side effects of acpi_boot_init:
1076 * acpi_lapic = 1 if LAPIC found
1077 * acpi_ioapic = 1 if IOAPIC found
1078 * if (acpi_lapic && acpi_ioapic) smp_found_config = 1;
1079 * if acpi_blacklisted() acpi_disabled = 1;
1080 * acpi_irq_model=...
1083 * return value: (currently ignored)
1088 int __init acpi_boot_table_init(void)
1093 dmi_check_system(acpi_dmi_table);
1097 * If acpi_disabled, bail out
1098 * One exception: acpi=ht continues far enough to enumerate LAPICs
1100 if (acpi_disabled && !acpi_ht)
1104 * Initialize the ACPI boot-time table parser.
1106 error = acpi_table_init();
1115 acpi_table_parse(ACPI_BOOT, acpi_parse_sbf);
1118 * blacklist may disable ACPI entirely
1120 error = acpi_blacklisted();
1123 printk(KERN_WARNING PREFIX "acpi=force override\n");
1125 printk(KERN_WARNING PREFIX "Disabling ACPI support\n");
1134 int __init acpi_boot_init(void)
1137 * If acpi_disabled, bail out
1138 * One exception: acpi=ht continues far enough to enumerate LAPICs
1140 if (acpi_disabled && !acpi_ht)
1143 acpi_table_parse(ACPI_BOOT, acpi_parse_sbf);
1146 * set sci_int and PM timer address
1148 acpi_table_parse(ACPI_FADT, acpi_parse_fadt);
1151 * Process the Multiple APIC Description Table (MADT), if present
1153 acpi_process_madt();
1155 acpi_table_parse(ACPI_HPET, acpi_parse_hpet);