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 < (end_pfn_map << PAGE_SHIFT))
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");
211 #endif /* CONFIG_PCI_MMCONFIG */
213 #ifdef CONFIG_X86_LOCAL_APIC
214 static int __init acpi_parse_madt(unsigned long phys_addr, unsigned long size)
216 struct acpi_table_madt *madt = NULL;
218 if (!phys_addr || !size)
221 madt = (struct acpi_table_madt *)__acpi_map_table(phys_addr, size);
223 printk(KERN_WARNING PREFIX "Unable to map MADT\n");
227 if (madt->lapic_address) {
228 acpi_lapic_addr = (u64) madt->lapic_address;
230 printk(KERN_DEBUG PREFIX "Local APIC address 0x%08x\n",
231 madt->lapic_address);
234 acpi_madt_oem_check(madt->header.oem_id, madt->header.oem_table_id);
240 acpi_parse_lapic(acpi_table_entry_header * header, const unsigned long end)
242 struct acpi_table_lapic *processor = NULL;
244 processor = (struct acpi_table_lapic *)header;
246 if (BAD_MADT_ENTRY(processor, end))
249 acpi_table_print_madt_entry(header);
251 /* no utility in registering a disabled processor */
252 if (processor->flags.enabled == 0)
255 x86_acpiid_to_apicid[processor->acpi_id] = processor->id;
257 mp_register_lapic(processor->id, /* APIC ID */
258 processor->flags.enabled); /* Enabled? */
264 acpi_parse_lapic_addr_ovr(acpi_table_entry_header * header,
265 const unsigned long end)
267 struct acpi_table_lapic_addr_ovr *lapic_addr_ovr = NULL;
269 lapic_addr_ovr = (struct acpi_table_lapic_addr_ovr *)header;
271 if (BAD_MADT_ENTRY(lapic_addr_ovr, end))
274 acpi_lapic_addr = lapic_addr_ovr->address;
280 acpi_parse_lapic_nmi(acpi_table_entry_header * header, const unsigned long end)
282 struct acpi_table_lapic_nmi *lapic_nmi = NULL;
284 lapic_nmi = (struct acpi_table_lapic_nmi *)header;
286 if (BAD_MADT_ENTRY(lapic_nmi, end))
289 acpi_table_print_madt_entry(header);
291 if (lapic_nmi->lint != 1)
292 printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n");
297 #endif /*CONFIG_X86_LOCAL_APIC */
299 #ifdef CONFIG_X86_IO_APIC
302 acpi_parse_ioapic(acpi_table_entry_header * header, const unsigned long end)
304 struct acpi_table_ioapic *ioapic = NULL;
306 ioapic = (struct acpi_table_ioapic *)header;
308 if (BAD_MADT_ENTRY(ioapic, end))
311 acpi_table_print_madt_entry(header);
313 mp_register_ioapic(ioapic->id,
314 ioapic->address, ioapic->global_irq_base);
320 * Parse Interrupt Source Override for the ACPI SCI
322 static void acpi_sci_ioapic_setup(u32 gsi, u16 polarity, u16 trigger)
324 if (trigger == 0) /* compatible SCI trigger is level */
327 if (polarity == 0) /* compatible SCI polarity is low */
330 /* Command-line over-ride via acpi_sci= */
331 if (acpi_sci_flags.trigger)
332 trigger = acpi_sci_flags.trigger;
334 if (acpi_sci_flags.polarity)
335 polarity = acpi_sci_flags.polarity;
338 * mp_config_acpi_legacy_irqs() already setup IRQs < 16
339 * If GSI is < 16, this will update its flags,
340 * else it will create a new mp_irqs[] entry.
342 mp_override_legacy_irq(gsi, polarity, trigger, gsi);
345 * stash over-ride to indicate we've been here
346 * and for later update of acpi_fadt
348 acpi_sci_override_gsi = gsi;
353 acpi_parse_int_src_ovr(acpi_table_entry_header * header,
354 const unsigned long end)
356 struct acpi_table_int_src_ovr *intsrc = NULL;
358 intsrc = (struct acpi_table_int_src_ovr *)header;
360 if (BAD_MADT_ENTRY(intsrc, end))
363 acpi_table_print_madt_entry(header);
365 if (intsrc->bus_irq == acpi_fadt.sci_int) {
366 acpi_sci_ioapic_setup(intsrc->global_irq,
367 intsrc->flags.polarity,
368 intsrc->flags.trigger);
372 if (acpi_skip_timer_override &&
373 intsrc->bus_irq == 0 && intsrc->global_irq == 2) {
374 printk(PREFIX "BIOS IRQ0 pin2 override ignored.\n");
378 mp_override_legacy_irq(intsrc->bus_irq,
379 intsrc->flags.polarity,
380 intsrc->flags.trigger, intsrc->global_irq);
386 acpi_parse_nmi_src(acpi_table_entry_header * header, const unsigned long end)
388 struct acpi_table_nmi_src *nmi_src = NULL;
390 nmi_src = (struct acpi_table_nmi_src *)header;
392 if (BAD_MADT_ENTRY(nmi_src, end))
395 acpi_table_print_madt_entry(header);
397 /* TBD: Support nimsrc entries? */
402 #endif /* CONFIG_X86_IO_APIC */
405 * acpi_pic_sci_set_trigger()
407 * use ELCR to set PIC-mode trigger type for SCI
409 * If a PIC-mode SCI is not recognized or gives spurious IRQ7's
410 * it may require Edge Trigger -- use "acpi_sci=edge"
412 * Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers
413 * for the 8259 PIC. bit[n] = 1 means irq[n] is Level, otherwise Edge.
414 * ECLR1 is IRQ's 0-7 (IRQ 0, 1, 2 must be 0)
415 * ECLR2 is IRQ's 8-15 (IRQ 8, 13 must be 0)
418 void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger)
420 unsigned int mask = 1 << irq;
421 unsigned int old, new;
423 /* Real old ELCR mask */
424 old = inb(0x4d0) | (inb(0x4d1) << 8);
427 * If we use ACPI to set PCI irq's, then we should clear ELCR
428 * since we will set it correctly as we enable the PCI irq
431 new = acpi_noirq ? old : 0;
434 * Update SCI information in the ELCR, it isn't in the PCI
438 case 1: /* Edge - clear */
441 case 3: /* Level - set */
449 printk(PREFIX "setting ELCR to %04x (from %04x)\n", new, old);
451 outb(new >> 8, 0x4d1);
454 int acpi_gsi_to_irq(u32 gsi, unsigned int *irq)
456 #ifdef CONFIG_X86_IO_APIC
457 if (use_pci_vector() && !platform_legacy_irq(gsi))
458 *irq = IO_APIC_VECTOR(gsi);
461 *irq = gsi_irq_sharing(gsi);
466 * success: return IRQ number (>=0)
467 * failure: return < 0
469 int acpi_register_gsi(u32 gsi, int edge_level, int active_high_low)
472 unsigned int plat_gsi = gsi;
476 * Make sure all (legacy) PCI IRQs are set as level-triggered.
478 if (acpi_irq_model == ACPI_IRQ_MODEL_PIC) {
479 extern void eisa_set_level_irq(unsigned int irq);
481 if (edge_level == ACPI_LEVEL_SENSITIVE)
482 eisa_set_level_irq(gsi);
486 #ifdef CONFIG_X86_IO_APIC
487 if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC) {
488 plat_gsi = mp_register_gsi(gsi, edge_level, active_high_low);
491 acpi_gsi_to_irq(plat_gsi, &irq);
495 EXPORT_SYMBOL(acpi_register_gsi);
498 * ACPI based hotplug support for CPU
500 #ifdef CONFIG_ACPI_HOTPLUG_CPU
501 int acpi_map_lsapic(acpi_handle handle, int *pcpu)
507 EXPORT_SYMBOL(acpi_map_lsapic);
509 int acpi_unmap_lsapic(int cpu)
515 EXPORT_SYMBOL(acpi_unmap_lsapic);
516 #endif /* CONFIG_ACPI_HOTPLUG_CPU */
518 int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base)
524 EXPORT_SYMBOL(acpi_register_ioapic);
526 int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base)
532 EXPORT_SYMBOL(acpi_unregister_ioapic);
534 static unsigned long __init
535 acpi_scan_rsdp(unsigned long start, unsigned long length)
537 unsigned long offset = 0;
538 unsigned long sig_len = sizeof("RSD PTR ") - 1;
541 * Scan all 16-byte boundaries of the physical memory region for the
544 for (offset = 0; offset < length; offset += 16) {
545 if (strncmp((char *)(phys_to_virt(start) + offset), "RSD PTR ", sig_len))
547 return (start + offset);
553 static int __init acpi_parse_sbf(unsigned long phys_addr, unsigned long size)
555 struct acpi_table_sbf *sb;
557 if (!phys_addr || !size)
560 sb = (struct acpi_table_sbf *)__acpi_map_table(phys_addr, size);
562 printk(KERN_WARNING PREFIX "Unable to map SBF\n");
566 sbf_port = sb->sbf_cmos; /* Save CMOS port */
571 #ifdef CONFIG_HPET_TIMER
573 static int __init acpi_parse_hpet(unsigned long phys, unsigned long size)
575 struct acpi_table_hpet *hpet_tbl;
580 hpet_tbl = (struct acpi_table_hpet *)__acpi_map_table(phys, size);
582 printk(KERN_WARNING PREFIX "Unable to map HPET\n");
586 if (hpet_tbl->addr.space_id != ACPI_SPACE_MEM) {
587 printk(KERN_WARNING PREFIX "HPET timers must be located in "
592 vxtime.hpet_address = hpet_tbl->addr.addrl |
593 ((long)hpet_tbl->addr.addrh << 32);
595 printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n",
596 hpet_tbl->id, vxtime.hpet_address);
599 extern unsigned long hpet_address;
601 hpet_address = hpet_tbl->addr.addrl;
602 printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n",
603 hpet_tbl->id, hpet_address);
610 #define acpi_parse_hpet NULL
613 #ifdef CONFIG_X86_PM_TIMER
614 extern u32 pmtmr_ioport;
617 static int __init acpi_parse_fadt(unsigned long phys, unsigned long size)
619 struct fadt_descriptor_rev2 *fadt = NULL;
621 fadt = (struct fadt_descriptor_rev2 *)__acpi_map_table(phys, size);
623 printk(KERN_WARNING PREFIX "Unable to map FADT\n");
626 /* initialize sci_int early for INT_SRC_OVR MADT parsing */
627 acpi_fadt.sci_int = fadt->sci_int;
629 /* initialize rev and apic_phys_dest_mode for x86_64 genapic */
630 acpi_fadt.revision = fadt->revision;
631 acpi_fadt.force_apic_physical_destination_mode =
632 fadt->force_apic_physical_destination_mode;
634 #ifdef CONFIG_X86_PM_TIMER
635 /* detect the location of the ACPI PM Timer */
636 if (fadt->revision >= FADT2_REVISION_ID) {
638 if (fadt->xpm_tmr_blk.address_space_id !=
639 ACPI_ADR_SPACE_SYSTEM_IO)
642 pmtmr_ioport = fadt->xpm_tmr_blk.address;
645 pmtmr_ioport = fadt->V1_pm_tmr_blk;
648 printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n",
654 unsigned long __init acpi_find_rsdp(void)
656 unsigned long rsdp_phys = 0;
660 return __pa(efi.acpi20);
662 return __pa(efi.acpi);
665 * Scan memory looking for the RSDP signature. First search EBDA (low
666 * memory) paragraphs and then search upper memory (E0000-FFFFF).
668 rsdp_phys = acpi_scan_rsdp(0, 0x400);
670 rsdp_phys = acpi_scan_rsdp(0xE0000, 0x20000);
675 #ifdef CONFIG_X86_LOCAL_APIC
677 * Parse LAPIC entries in MADT
678 * returns 0 on success, < 0 on error
680 static int __init acpi_parse_madt_lapic_entries(void)
685 * Note that the LAPIC address is obtained from the MADT (32-bit value)
686 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value).
690 acpi_table_parse_madt(ACPI_MADT_LAPIC_ADDR_OVR,
691 acpi_parse_lapic_addr_ovr, 0);
693 printk(KERN_ERR PREFIX
694 "Error parsing LAPIC address override entry\n");
698 mp_register_lapic_address(acpi_lapic_addr);
700 count = acpi_table_parse_madt(ACPI_MADT_LAPIC, acpi_parse_lapic,
703 printk(KERN_ERR PREFIX "No LAPIC entries present\n");
704 /* TBD: Cleanup to allow fallback to MPS */
706 } else if (count < 0) {
707 printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n");
708 /* TBD: Cleanup to allow fallback to MPS */
713 acpi_table_parse_madt(ACPI_MADT_LAPIC_NMI, acpi_parse_lapic_nmi, 0);
715 printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n");
716 /* TBD: Cleanup to allow fallback to MPS */
721 #endif /* CONFIG_X86_LOCAL_APIC */
723 #ifdef CONFIG_X86_IO_APIC
725 * Parse IOAPIC related entries in MADT
726 * returns 0 on success, < 0 on error
728 static int __init acpi_parse_madt_ioapic_entries(void)
733 * ACPI interpreter is required to complete interrupt setup,
734 * so if it is off, don't enumerate the io-apics with ACPI.
735 * If MPS is present, it will handle them,
736 * otherwise the system will stay in PIC mode
738 if (acpi_disabled || acpi_noirq) {
743 * if "noapic" boot option, don't look for IO-APICs
745 if (skip_ioapic_setup) {
746 printk(KERN_INFO PREFIX "Skipping IOAPIC probe "
747 "due to 'noapic' option.\n");
752 acpi_table_parse_madt(ACPI_MADT_IOAPIC, acpi_parse_ioapic,
755 printk(KERN_ERR PREFIX "No IOAPIC entries present\n");
757 } else if (count < 0) {
758 printk(KERN_ERR PREFIX "Error parsing IOAPIC entry\n");
763 acpi_table_parse_madt(ACPI_MADT_INT_SRC_OVR, acpi_parse_int_src_ovr,
766 printk(KERN_ERR PREFIX
767 "Error parsing interrupt source overrides entry\n");
768 /* TBD: Cleanup to allow fallback to MPS */
773 * If BIOS did not supply an INT_SRC_OVR for the SCI
774 * pretend we got one so we can set the SCI flags.
776 if (!acpi_sci_override_gsi)
777 acpi_sci_ioapic_setup(acpi_fadt.sci_int, 0, 0);
779 /* Fill in identity legacy mapings where no override */
780 mp_config_acpi_legacy_irqs();
783 acpi_table_parse_madt(ACPI_MADT_NMI_SRC, acpi_parse_nmi_src,
786 printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n");
787 /* TBD: Cleanup to allow fallback to MPS */
794 static inline int acpi_parse_madt_ioapic_entries(void)
798 #endif /* !CONFIG_X86_IO_APIC */
800 static void __init acpi_process_madt(void)
802 #ifdef CONFIG_X86_LOCAL_APIC
805 count = acpi_table_parse(ACPI_APIC, acpi_parse_madt);
809 * Parse MADT LAPIC entries
811 error = acpi_parse_madt_lapic_entries();
815 #ifdef CONFIG_X86_GENERICARCH
816 generic_bigsmp_probe();
819 * Parse MADT IO-APIC entries
821 error = acpi_parse_madt_ioapic_entries();
823 acpi_irq_model = ACPI_IRQ_MODEL_IOAPIC;
824 acpi_irq_balance_set(NULL);
827 smp_found_config = 1;
828 clustered_apic_check();
831 if (error == -EINVAL) {
833 * Dell Precision Workstation 410, 610 come here.
835 printk(KERN_ERR PREFIX
836 "Invalid BIOS MADT, disabling ACPI\n");
844 extern int acpi_force;
848 static int __init disable_acpi_irq(struct dmi_system_id *d)
851 printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n",
858 static int __init disable_acpi_pci(struct dmi_system_id *d)
861 printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n",
868 static int __init dmi_disable_acpi(struct dmi_system_id *d)
871 printk(KERN_NOTICE "%s detected: acpi off\n", d->ident);
875 "Warning: DMI blacklist says broken, but acpi forced\n");
881 * Limit ACPI to CPU enumeration for HT
883 static int __init force_acpi_ht(struct dmi_system_id *d)
886 printk(KERN_NOTICE "%s detected: force use of acpi=ht\n",
892 "Warning: acpi=force overrules DMI blacklist: acpi=ht\n");
898 * If your system is blacklisted here, but you find that acpi=force
899 * works for you, please contact acpi-devel@sourceforge.net
901 static struct dmi_system_id __initdata acpi_dmi_table[] = {
903 * Boxes that need ACPI disabled
906 .callback = dmi_disable_acpi,
907 .ident = "IBM Thinkpad",
909 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
910 DMI_MATCH(DMI_BOARD_NAME, "2629H1G"),
915 * Boxes that need acpi=ht
918 .callback = force_acpi_ht,
919 .ident = "FSC Primergy T850",
921 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
922 DMI_MATCH(DMI_PRODUCT_NAME, "PRIMERGY T850"),
926 .callback = force_acpi_ht,
927 .ident = "DELL GX240",
929 DMI_MATCH(DMI_BOARD_VENDOR, "Dell Computer Corporation"),
930 DMI_MATCH(DMI_BOARD_NAME, "OptiPlex GX240"),
934 .callback = force_acpi_ht,
935 .ident = "HP VISUALIZE NT Workstation",
937 DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),
938 DMI_MATCH(DMI_PRODUCT_NAME, "HP VISUALIZE NT Workstation"),
942 .callback = force_acpi_ht,
943 .ident = "Compaq Workstation W8000",
945 DMI_MATCH(DMI_SYS_VENDOR, "Compaq"),
946 DMI_MATCH(DMI_PRODUCT_NAME, "Workstation W8000"),
950 .callback = force_acpi_ht,
951 .ident = "ASUS P4B266",
953 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
954 DMI_MATCH(DMI_BOARD_NAME, "P4B266"),
958 .callback = force_acpi_ht,
959 .ident = "ASUS P2B-DS",
961 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
962 DMI_MATCH(DMI_BOARD_NAME, "P2B-DS"),
966 .callback = force_acpi_ht,
967 .ident = "ASUS CUR-DLS",
969 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
970 DMI_MATCH(DMI_BOARD_NAME, "CUR-DLS"),
974 .callback = force_acpi_ht,
975 .ident = "ABIT i440BX-W83977",
977 DMI_MATCH(DMI_BOARD_VENDOR, "ABIT <http://www.abit.com>"),
978 DMI_MATCH(DMI_BOARD_NAME, "i440BX-W83977 (BP6)"),
982 .callback = force_acpi_ht,
983 .ident = "IBM Bladecenter",
985 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
986 DMI_MATCH(DMI_BOARD_NAME, "IBM eServer BladeCenter HS20"),
990 .callback = force_acpi_ht,
991 .ident = "IBM eServer xSeries 360",
993 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
994 DMI_MATCH(DMI_BOARD_NAME, "eServer xSeries 360"),
998 .callback = force_acpi_ht,
999 .ident = "IBM eserver xSeries 330",
1001 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1002 DMI_MATCH(DMI_BOARD_NAME, "eserver xSeries 330"),
1006 .callback = force_acpi_ht,
1007 .ident = "IBM eserver xSeries 440",
1009 DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
1010 DMI_MATCH(DMI_PRODUCT_NAME, "eserver xSeries 440"),
1015 * Boxes that need ACPI PCI IRQ routing disabled
1018 .callback = disable_acpi_irq,
1019 .ident = "ASUS A7V",
1021 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"),
1022 DMI_MATCH(DMI_BOARD_NAME, "<A7V>"),
1023 /* newer BIOS, Revision 1011, does work */
1024 DMI_MATCH(DMI_BIOS_VERSION,
1025 "ASUS A7V ACPI BIOS Revision 1007"),
1030 * Boxes that need ACPI PCI IRQ routing and PCI scan disabled
1033 .callback = disable_acpi_pci,
1034 .ident = "ASUS PR-DLS",
1036 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
1037 DMI_MATCH(DMI_BOARD_NAME, "PR-DLS"),
1038 DMI_MATCH(DMI_BIOS_VERSION,
1039 "ASUS PR-DLS ACPI BIOS Revision 1010"),
1040 DMI_MATCH(DMI_BIOS_DATE, "03/21/2003")
1044 .callback = disable_acpi_pci,
1045 .ident = "Acer TravelMate 36x Laptop",
1047 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
1048 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"),
1054 #endif /* __i386__ */
1057 * acpi_boot_table_init() and acpi_boot_init()
1058 * called from setup_arch(), always.
1059 * 1. checksums all tables
1060 * 2. enumerates lapics
1061 * 3. enumerates io-apics
1063 * acpi_table_init() is separate to allow reading SRAT without
1064 * other side effects.
1066 * side effects of acpi_boot_init:
1067 * acpi_lapic = 1 if LAPIC found
1068 * acpi_ioapic = 1 if IOAPIC found
1069 * if (acpi_lapic && acpi_ioapic) smp_found_config = 1;
1070 * if acpi_blacklisted() acpi_disabled = 1;
1071 * acpi_irq_model=...
1074 * return value: (currently ignored)
1079 int __init acpi_boot_table_init(void)
1084 dmi_check_system(acpi_dmi_table);
1088 * If acpi_disabled, bail out
1089 * One exception: acpi=ht continues far enough to enumerate LAPICs
1091 if (acpi_disabled && !acpi_ht)
1095 * Initialize the ACPI boot-time table parser.
1097 error = acpi_table_init();
1106 acpi_table_parse(ACPI_BOOT, acpi_parse_sbf);
1109 * blacklist may disable ACPI entirely
1111 error = acpi_blacklisted();
1114 printk(KERN_WARNING PREFIX "acpi=force override\n");
1116 printk(KERN_WARNING PREFIX "Disabling ACPI support\n");
1125 int __init acpi_boot_init(void)
1128 * If acpi_disabled, bail out
1129 * One exception: acpi=ht continues far enough to enumerate LAPICs
1131 if (acpi_disabled && !acpi_ht)
1134 acpi_table_parse(ACPI_BOOT, acpi_parse_sbf);
1137 * set sci_int and PM timer address
1139 acpi_table_parse(ACPI_FADT, acpi_parse_fadt);
1142 * Process the Multiple APIC Description Table (MADT), if present
1144 acpi_process_madt();
1146 acpi_table_parse(ACPI_HPET, acpi_parse_hpet);