2 * boot.c - Architecture-Specific Low-Level ACPI Boot Support
4 * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
5 * Copyright (C) 2001 Jun Nakajima <jun.nakajima@intel.com>
7 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
26 #include <linux/init.h>
27 #include <linux/config.h>
28 #include <linux/acpi.h>
29 #include <linux/efi.h>
30 #include <linux/module.h>
31 #include <linux/dmi.h>
32 #include <linux/irq.h>
34 #include <asm/pgtable.h>
35 #include <asm/io_apic.h>
38 #include <asm/mpspec.h>
42 extern void __init
clustered_apic_check(void);
44 extern int gsi_irq_sharing(int gsi
);
45 #include <asm/proto.h>
47 static inline int acpi_madt_oem_check(char *oem_id
, char *oem_table_id
) { return 0; }
52 #ifdef CONFIG_X86_LOCAL_APIC
53 #include <mach_apic.h>
54 #include <mach_mpparse.h>
55 #endif /* CONFIG_X86_LOCAL_APIC */
57 static inline int gsi_irq_sharing(int gsi
) { return gsi
; }
61 #define BAD_MADT_ENTRY(entry, end) ( \
62 (!entry) || (unsigned long)entry + sizeof(*entry) > end || \
63 ((acpi_table_entry_header *)entry)->length != sizeof(*entry))
65 #define PREFIX "ACPI: "
67 int acpi_noirq __initdata
; /* skip ACPI IRQ initialization */
68 int acpi_pci_disabled __initdata
; /* skip ACPI PCI scan and IRQ initialization */
69 int acpi_ht __initdata
= 1; /* enable HT */
74 EXPORT_SYMBOL(acpi_strict
);
76 acpi_interrupt_flags acpi_sci_flags __initdata
;
77 int acpi_sci_override_gsi __initdata
;
78 int acpi_skip_timer_override __initdata
;
80 #ifdef CONFIG_X86_LOCAL_APIC
81 static u64 acpi_lapic_addr __initdata
= APIC_DEFAULT_PHYS_BASE
;
84 #ifndef __HAVE_ARCH_CMPXCHG
85 #warning ACPI uses CMPXCHG, i486 and later hardware
88 #define MAX_MADT_ENTRIES 256
89 u8 x86_acpiid_to_apicid
[MAX_MADT_ENTRIES
] =
90 {[0 ... MAX_MADT_ENTRIES
- 1] = 0xff };
91 EXPORT_SYMBOL(x86_acpiid_to_apicid
);
93 /* --------------------------------------------------------------------------
94 Boot-time Configuration
95 -------------------------------------------------------------------------- */
98 * The default interrupt routing model is PIC (8259). This gets
99 * overriden if IOAPICs are enumerated (below).
101 enum acpi_irq_model_id acpi_irq_model
= ACPI_IRQ_MODEL_PIC
;
105 /* rely on all ACPI tables being in the direct mapping */
106 char *__acpi_map_table(unsigned long phys_addr
, unsigned long size
)
108 if (!phys_addr
|| !size
)
111 if (phys_addr
+size
<= (end_pfn_map
<< PAGE_SHIFT
) + PAGE_SIZE
)
112 return __va(phys_addr
);
120 * Temporarily use the virtual area starting from FIX_IO_APIC_BASE_END,
121 * to map the target physical address. The problem is that set_fixmap()
122 * provides a single page, and it is possible that the page is not
124 * By using this area, we can map up to MAX_IO_APICS pages temporarily,
125 * i.e. until the next __va_range() call.
127 * Important Safety Note: The fixed I/O APIC page numbers are *subtracted*
128 * from the fixed base. That's why we start at FIX_IO_APIC_BASE_END and
129 * count idx down while incrementing the phys address.
131 char *__acpi_map_table(unsigned long phys
, unsigned long size
)
133 unsigned long base
, offset
, mapped_size
;
136 if (phys
+ size
< 8 * 1024 * 1024)
139 offset
= phys
& (PAGE_SIZE
- 1);
140 mapped_size
= PAGE_SIZE
- offset
;
141 set_fixmap(FIX_ACPI_END
, phys
);
142 base
= fix_to_virt(FIX_ACPI_END
);
145 * Most cases can be covered by the below.
148 while (mapped_size
< size
) {
149 if (--idx
< FIX_ACPI_BEGIN
)
150 return NULL
; /* cannot handle this */
152 set_fixmap(idx
, phys
);
153 mapped_size
+= PAGE_SIZE
;
156 return ((unsigned char *)base
+ offset
);
160 #ifdef CONFIG_PCI_MMCONFIG
161 /* The physical address of the MMCONFIG aperture. Set from ACPI tables. */
162 struct acpi_table_mcfg_config
*pci_mmcfg_config
;
163 int pci_mmcfg_config_num
;
165 int __init
acpi_parse_mcfg(unsigned long phys_addr
, unsigned long size
)
167 struct acpi_table_mcfg
*mcfg
;
171 if (!phys_addr
|| !size
)
174 mcfg
= (struct acpi_table_mcfg
*)__acpi_map_table(phys_addr
, size
);
176 printk(KERN_WARNING PREFIX
"Unable to map MCFG\n");
180 /* how many config structures do we have */
181 pci_mmcfg_config_num
= 0;
182 i
= size
- sizeof(struct acpi_table_mcfg
);
183 while (i
>= sizeof(struct acpi_table_mcfg_config
)) {
184 ++pci_mmcfg_config_num
;
185 i
-= sizeof(struct acpi_table_mcfg_config
);
187 if (pci_mmcfg_config_num
== 0) {
188 printk(KERN_ERR PREFIX
"MMCONFIG has no entries\n");
192 config_size
= pci_mmcfg_config_num
* sizeof(*pci_mmcfg_config
);
193 pci_mmcfg_config
= kmalloc(config_size
, GFP_KERNEL
);
194 if (!pci_mmcfg_config
) {
195 printk(KERN_WARNING PREFIX
196 "No memory for MCFG config tables\n");
200 memcpy(pci_mmcfg_config
, &mcfg
->config
, config_size
);
201 for (i
= 0; i
< pci_mmcfg_config_num
; ++i
) {
202 if (mcfg
->config
[i
].base_reserved
) {
203 printk(KERN_ERR PREFIX
204 "MMCONFIG not in low 4GB of memory\n");
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 /* Record local apic id only when enabled */
252 if (processor
->flags
.enabled
)
253 x86_acpiid_to_apicid
[processor
->acpi_id
] = processor
->id
;
256 * We need to register disabled CPU as well to permit
257 * counting disabled CPUs. This allows us to size
258 * cpus_possible_map more accurately, to permit
259 * to not preallocating memory for all NR_CPUS
260 * when we use CPU hotplug.
262 mp_register_lapic(processor
->id
, /* APIC ID */
263 processor
->flags
.enabled
); /* Enabled? */
269 acpi_parse_lapic_addr_ovr(acpi_table_entry_header
* header
,
270 const unsigned long end
)
272 struct acpi_table_lapic_addr_ovr
*lapic_addr_ovr
= NULL
;
274 lapic_addr_ovr
= (struct acpi_table_lapic_addr_ovr
*)header
;
276 if (BAD_MADT_ENTRY(lapic_addr_ovr
, end
))
279 acpi_lapic_addr
= lapic_addr_ovr
->address
;
285 acpi_parse_lapic_nmi(acpi_table_entry_header
* header
, const unsigned long end
)
287 struct acpi_table_lapic_nmi
*lapic_nmi
= NULL
;
289 lapic_nmi
= (struct acpi_table_lapic_nmi
*)header
;
291 if (BAD_MADT_ENTRY(lapic_nmi
, end
))
294 acpi_table_print_madt_entry(header
);
296 if (lapic_nmi
->lint
!= 1)
297 printk(KERN_WARNING PREFIX
"NMI not connected to LINT 1!\n");
302 #endif /*CONFIG_X86_LOCAL_APIC */
304 #ifdef CONFIG_X86_IO_APIC
307 acpi_parse_ioapic(acpi_table_entry_header
* header
, const unsigned long end
)
309 struct acpi_table_ioapic
*ioapic
= NULL
;
311 ioapic
= (struct acpi_table_ioapic
*)header
;
313 if (BAD_MADT_ENTRY(ioapic
, end
))
316 acpi_table_print_madt_entry(header
);
318 mp_register_ioapic(ioapic
->id
,
319 ioapic
->address
, ioapic
->global_irq_base
);
325 * Parse Interrupt Source Override for the ACPI SCI
327 static void acpi_sci_ioapic_setup(u32 gsi
, u16 polarity
, u16 trigger
)
329 if (trigger
== 0) /* compatible SCI trigger is level */
332 if (polarity
== 0) /* compatible SCI polarity is low */
335 /* Command-line over-ride via acpi_sci= */
336 if (acpi_sci_flags
.trigger
)
337 trigger
= acpi_sci_flags
.trigger
;
339 if (acpi_sci_flags
.polarity
)
340 polarity
= acpi_sci_flags
.polarity
;
343 * mp_config_acpi_legacy_irqs() already setup IRQs < 16
344 * If GSI is < 16, this will update its flags,
345 * else it will create a new mp_irqs[] entry.
347 mp_override_legacy_irq(gsi
, polarity
, trigger
, gsi
);
350 * stash over-ride to indicate we've been here
351 * and for later update of acpi_fadt
353 acpi_sci_override_gsi
= gsi
;
358 acpi_parse_int_src_ovr(acpi_table_entry_header
* header
,
359 const unsigned long end
)
361 struct acpi_table_int_src_ovr
*intsrc
= NULL
;
363 intsrc
= (struct acpi_table_int_src_ovr
*)header
;
365 if (BAD_MADT_ENTRY(intsrc
, end
))
368 acpi_table_print_madt_entry(header
);
370 if (intsrc
->bus_irq
== acpi_fadt
.sci_int
) {
371 acpi_sci_ioapic_setup(intsrc
->global_irq
,
372 intsrc
->flags
.polarity
,
373 intsrc
->flags
.trigger
);
377 if (acpi_skip_timer_override
&&
378 intsrc
->bus_irq
== 0 && intsrc
->global_irq
== 2) {
379 printk(PREFIX
"BIOS IRQ0 pin2 override ignored.\n");
383 mp_override_legacy_irq(intsrc
->bus_irq
,
384 intsrc
->flags
.polarity
,
385 intsrc
->flags
.trigger
, intsrc
->global_irq
);
391 acpi_parse_nmi_src(acpi_table_entry_header
* header
, const unsigned long end
)
393 struct acpi_table_nmi_src
*nmi_src
= NULL
;
395 nmi_src
= (struct acpi_table_nmi_src
*)header
;
397 if (BAD_MADT_ENTRY(nmi_src
, end
))
400 acpi_table_print_madt_entry(header
);
402 /* TBD: Support nimsrc entries? */
407 #endif /* CONFIG_X86_IO_APIC */
410 * acpi_pic_sci_set_trigger()
412 * use ELCR to set PIC-mode trigger type for SCI
414 * If a PIC-mode SCI is not recognized or gives spurious IRQ7's
415 * it may require Edge Trigger -- use "acpi_sci=edge"
417 * Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers
418 * for the 8259 PIC. bit[n] = 1 means irq[n] is Level, otherwise Edge.
419 * ECLR1 is IRQ's 0-7 (IRQ 0, 1, 2 must be 0)
420 * ECLR2 is IRQ's 8-15 (IRQ 8, 13 must be 0)
423 void __init
acpi_pic_sci_set_trigger(unsigned int irq
, u16 trigger
)
425 unsigned int mask
= 1 << irq
;
426 unsigned int old
, new;
428 /* Real old ELCR mask */
429 old
= inb(0x4d0) | (inb(0x4d1) << 8);
432 * If we use ACPI to set PCI irq's, then we should clear ELCR
433 * since we will set it correctly as we enable the PCI irq
436 new = acpi_noirq
? old
: 0;
439 * Update SCI information in the ELCR, it isn't in the PCI
443 case 1: /* Edge - clear */
446 case 3: /* Level - set */
454 printk(PREFIX
"setting ELCR to %04x (from %04x)\n", new, old
);
456 outb(new >> 8, 0x4d1);
459 int acpi_gsi_to_irq(u32 gsi
, unsigned int *irq
)
461 #ifdef CONFIG_X86_IO_APIC
462 if (use_pci_vector() && !platform_legacy_irq(gsi
))
463 *irq
= IO_APIC_VECTOR(gsi
);
466 *irq
= gsi_irq_sharing(gsi
);
471 * success: return IRQ number (>=0)
472 * failure: return < 0
474 int acpi_register_gsi(u32 gsi
, int triggering
, int polarity
)
477 unsigned int plat_gsi
= gsi
;
481 * Make sure all (legacy) PCI IRQs are set as level-triggered.
483 if (acpi_irq_model
== ACPI_IRQ_MODEL_PIC
) {
484 extern void eisa_set_level_irq(unsigned int irq
);
486 if (triggering
== ACPI_LEVEL_SENSITIVE
)
487 eisa_set_level_irq(gsi
);
491 #ifdef CONFIG_X86_IO_APIC
492 if (acpi_irq_model
== ACPI_IRQ_MODEL_IOAPIC
) {
493 plat_gsi
= mp_register_gsi(gsi
, triggering
, polarity
);
496 acpi_gsi_to_irq(plat_gsi
, &irq
);
500 EXPORT_SYMBOL(acpi_register_gsi
);
503 * ACPI based hotplug support for CPU
505 #ifdef CONFIG_ACPI_HOTPLUG_CPU
506 int acpi_map_lsapic(acpi_handle handle
, int *pcpu
)
512 EXPORT_SYMBOL(acpi_map_lsapic
);
514 int acpi_unmap_lsapic(int cpu
)
520 EXPORT_SYMBOL(acpi_unmap_lsapic
);
521 #endif /* CONFIG_ACPI_HOTPLUG_CPU */
523 int acpi_register_ioapic(acpi_handle handle
, u64 phys_addr
, u32 gsi_base
)
529 EXPORT_SYMBOL(acpi_register_ioapic
);
531 int acpi_unregister_ioapic(acpi_handle handle
, u32 gsi_base
)
537 EXPORT_SYMBOL(acpi_unregister_ioapic
);
539 static unsigned long __init
540 acpi_scan_rsdp(unsigned long start
, unsigned long length
)
542 unsigned long offset
= 0;
543 unsigned long sig_len
= sizeof("RSD PTR ") - 1;
546 * Scan all 16-byte boundaries of the physical memory region for the
549 for (offset
= 0; offset
< length
; offset
+= 16) {
550 if (strncmp((char *)(phys_to_virt(start
) + offset
), "RSD PTR ", sig_len
))
552 return (start
+ offset
);
558 static int __init
acpi_parse_sbf(unsigned long phys_addr
, unsigned long size
)
560 struct acpi_table_sbf
*sb
;
562 if (!phys_addr
|| !size
)
565 sb
= (struct acpi_table_sbf
*)__acpi_map_table(phys_addr
, size
);
567 printk(KERN_WARNING PREFIX
"Unable to map SBF\n");
571 sbf_port
= sb
->sbf_cmos
; /* Save CMOS port */
576 #ifdef CONFIG_HPET_TIMER
578 static int __init
acpi_parse_hpet(unsigned long phys
, unsigned long size
)
580 struct acpi_table_hpet
*hpet_tbl
;
585 hpet_tbl
= (struct acpi_table_hpet
*)__acpi_map_table(phys
, size
);
587 printk(KERN_WARNING PREFIX
"Unable to map HPET\n");
591 if (hpet_tbl
->addr
.space_id
!= ACPI_SPACE_MEM
) {
592 printk(KERN_WARNING PREFIX
"HPET timers must be located in "
597 vxtime
.hpet_address
= hpet_tbl
->addr
.addrl
|
598 ((long)hpet_tbl
->addr
.addrh
<< 32);
600 printk(KERN_INFO PREFIX
"HPET id: %#x base: %#lx\n",
601 hpet_tbl
->id
, vxtime
.hpet_address
);
604 extern unsigned long hpet_address
;
606 hpet_address
= hpet_tbl
->addr
.addrl
;
607 printk(KERN_INFO PREFIX
"HPET id: %#x base: %#lx\n",
608 hpet_tbl
->id
, hpet_address
);
615 #define acpi_parse_hpet NULL
618 #ifdef CONFIG_X86_PM_TIMER
619 extern u32 pmtmr_ioport
;
622 static int __init
acpi_parse_fadt(unsigned long phys
, unsigned long size
)
624 struct fadt_descriptor
*fadt
= NULL
;
626 fadt
= (struct fadt_descriptor
*)__acpi_map_table(phys
, size
);
628 printk(KERN_WARNING PREFIX
"Unable to map FADT\n");
631 /* initialize sci_int early for INT_SRC_OVR MADT parsing */
632 acpi_fadt
.sci_int
= fadt
->sci_int
;
634 /* initialize rev and apic_phys_dest_mode for x86_64 genapic */
635 acpi_fadt
.revision
= fadt
->revision
;
636 acpi_fadt
.force_apic_physical_destination_mode
=
637 fadt
->force_apic_physical_destination_mode
;
639 #ifdef CONFIG_X86_PM_TIMER
640 /* detect the location of the ACPI PM Timer */
641 if (fadt
->revision
>= FADT2_REVISION_ID
) {
643 if (fadt
->xpm_tmr_blk
.address_space_id
!=
644 ACPI_ADR_SPACE_SYSTEM_IO
)
647 pmtmr_ioport
= fadt
->xpm_tmr_blk
.address
;
649 * "X" fields are optional extensions to the original V1.0
650 * fields, so we must selectively expand V1.0 fields if the
651 * corresponding X field is zero.
654 pmtmr_ioport
= fadt
->V1_pm_tmr_blk
;
657 pmtmr_ioport
= fadt
->V1_pm_tmr_blk
;
660 printk(KERN_INFO PREFIX
"PM-Timer IO Port: %#x\n",
666 unsigned long __init
acpi_find_rsdp(void)
668 unsigned long rsdp_phys
= 0;
671 if (efi
.acpi20
!= EFI_INVALID_TABLE_ADDR
)
673 else if (efi
.acpi
!= EFI_INVALID_TABLE_ADDR
)
677 * Scan memory looking for the RSDP signature. First search EBDA (low
678 * memory) paragraphs and then search upper memory (E0000-FFFFF).
680 rsdp_phys
= acpi_scan_rsdp(0, 0x400);
682 rsdp_phys
= acpi_scan_rsdp(0xE0000, 0x20000);
687 #ifdef CONFIG_X86_LOCAL_APIC
689 * Parse LAPIC entries in MADT
690 * returns 0 on success, < 0 on error
692 static int __init
acpi_parse_madt_lapic_entries(void)
700 * Note that the LAPIC address is obtained from the MADT (32-bit value)
701 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value).
705 acpi_table_parse_madt(ACPI_MADT_LAPIC_ADDR_OVR
,
706 acpi_parse_lapic_addr_ovr
, 0);
708 printk(KERN_ERR PREFIX
709 "Error parsing LAPIC address override entry\n");
713 mp_register_lapic_address(acpi_lapic_addr
);
715 count
= acpi_table_parse_madt(ACPI_MADT_LAPIC
, acpi_parse_lapic
,
718 printk(KERN_ERR PREFIX
"No LAPIC entries present\n");
719 /* TBD: Cleanup to allow fallback to MPS */
721 } else if (count
< 0) {
722 printk(KERN_ERR PREFIX
"Error parsing LAPIC entry\n");
723 /* TBD: Cleanup to allow fallback to MPS */
728 acpi_table_parse_madt(ACPI_MADT_LAPIC_NMI
, acpi_parse_lapic_nmi
, 0);
730 printk(KERN_ERR PREFIX
"Error parsing LAPIC NMI entry\n");
731 /* TBD: Cleanup to allow fallback to MPS */
736 #endif /* CONFIG_X86_LOCAL_APIC */
738 #ifdef CONFIG_X86_IO_APIC
740 * Parse IOAPIC related entries in MADT
741 * returns 0 on success, < 0 on error
743 static int __init
acpi_parse_madt_ioapic_entries(void)
748 * ACPI interpreter is required to complete interrupt setup,
749 * so if it is off, don't enumerate the io-apics with ACPI.
750 * If MPS is present, it will handle them,
751 * otherwise the system will stay in PIC mode
753 if (acpi_disabled
|| acpi_noirq
) {
761 * if "noapic" boot option, don't look for IO-APICs
763 if (skip_ioapic_setup
) {
764 printk(KERN_INFO PREFIX
"Skipping IOAPIC probe "
765 "due to 'noapic' option.\n");
770 acpi_table_parse_madt(ACPI_MADT_IOAPIC
, acpi_parse_ioapic
,
773 printk(KERN_ERR PREFIX
"No IOAPIC entries present\n");
775 } else if (count
< 0) {
776 printk(KERN_ERR PREFIX
"Error parsing IOAPIC entry\n");
781 acpi_table_parse_madt(ACPI_MADT_INT_SRC_OVR
, acpi_parse_int_src_ovr
,
784 printk(KERN_ERR PREFIX
785 "Error parsing interrupt source overrides entry\n");
786 /* TBD: Cleanup to allow fallback to MPS */
791 * If BIOS did not supply an INT_SRC_OVR for the SCI
792 * pretend we got one so we can set the SCI flags.
794 if (!acpi_sci_override_gsi
)
795 acpi_sci_ioapic_setup(acpi_fadt
.sci_int
, 0, 0);
797 /* Fill in identity legacy mapings where no override */
798 mp_config_acpi_legacy_irqs();
801 acpi_table_parse_madt(ACPI_MADT_NMI_SRC
, acpi_parse_nmi_src
,
804 printk(KERN_ERR PREFIX
"Error parsing NMI SRC entry\n");
805 /* TBD: Cleanup to allow fallback to MPS */
812 static inline int acpi_parse_madt_ioapic_entries(void)
816 #endif /* !CONFIG_X86_IO_APIC */
818 static void __init
acpi_process_madt(void)
820 #ifdef CONFIG_X86_LOCAL_APIC
823 count
= acpi_table_parse(ACPI_APIC
, acpi_parse_madt
);
827 * Parse MADT LAPIC entries
829 error
= acpi_parse_madt_lapic_entries();
833 #ifdef CONFIG_X86_GENERICARCH
834 generic_bigsmp_probe();
837 * Parse MADT IO-APIC entries
839 error
= acpi_parse_madt_ioapic_entries();
841 acpi_irq_model
= ACPI_IRQ_MODEL_IOAPIC
;
842 acpi_irq_balance_set(NULL
);
845 smp_found_config
= 1;
846 clustered_apic_check();
849 if (error
== -EINVAL
) {
851 * Dell Precision Workstation 410, 610 come here.
853 printk(KERN_ERR PREFIX
854 "Invalid BIOS MADT, disabling ACPI\n");
862 extern int acpi_force
;
866 static int __init
disable_acpi_irq(struct dmi_system_id
*d
)
869 printk(KERN_NOTICE
"%s detected: force use of acpi=noirq\n",
876 static int __init
disable_acpi_pci(struct dmi_system_id
*d
)
879 printk(KERN_NOTICE
"%s detected: force use of pci=noacpi\n",
886 static int __init
dmi_disable_acpi(struct dmi_system_id
*d
)
889 printk(KERN_NOTICE
"%s detected: acpi off\n", d
->ident
);
893 "Warning: DMI blacklist says broken, but acpi forced\n");
899 * Limit ACPI to CPU enumeration for HT
901 static int __init
force_acpi_ht(struct dmi_system_id
*d
)
904 printk(KERN_NOTICE
"%s detected: force use of acpi=ht\n",
910 "Warning: acpi=force overrules DMI blacklist: acpi=ht\n");
916 * If your system is blacklisted here, but you find that acpi=force
917 * works for you, please contact acpi-devel@sourceforge.net
919 static struct dmi_system_id __initdata acpi_dmi_table
[] = {
921 * Boxes that need ACPI disabled
924 .callback
= dmi_disable_acpi
,
925 .ident
= "IBM Thinkpad",
927 DMI_MATCH(DMI_BOARD_VENDOR
, "IBM"),
928 DMI_MATCH(DMI_BOARD_NAME
, "2629H1G"),
933 * Boxes that need acpi=ht
936 .callback
= force_acpi_ht
,
937 .ident
= "FSC Primergy T850",
939 DMI_MATCH(DMI_SYS_VENDOR
, "FUJITSU SIEMENS"),
940 DMI_MATCH(DMI_PRODUCT_NAME
, "PRIMERGY T850"),
944 .callback
= force_acpi_ht
,
945 .ident
= "DELL GX240",
947 DMI_MATCH(DMI_BOARD_VENDOR
, "Dell Computer Corporation"),
948 DMI_MATCH(DMI_BOARD_NAME
, "OptiPlex GX240"),
952 .callback
= force_acpi_ht
,
953 .ident
= "HP VISUALIZE NT Workstation",
955 DMI_MATCH(DMI_BOARD_VENDOR
, "Hewlett-Packard"),
956 DMI_MATCH(DMI_PRODUCT_NAME
, "HP VISUALIZE NT Workstation"),
960 .callback
= force_acpi_ht
,
961 .ident
= "Compaq Workstation W8000",
963 DMI_MATCH(DMI_SYS_VENDOR
, "Compaq"),
964 DMI_MATCH(DMI_PRODUCT_NAME
, "Workstation W8000"),
968 .callback
= force_acpi_ht
,
969 .ident
= "ASUS P4B266",
971 DMI_MATCH(DMI_BOARD_VENDOR
, "ASUSTeK Computer INC."),
972 DMI_MATCH(DMI_BOARD_NAME
, "P4B266"),
976 .callback
= force_acpi_ht
,
977 .ident
= "ASUS P2B-DS",
979 DMI_MATCH(DMI_BOARD_VENDOR
, "ASUSTeK Computer INC."),
980 DMI_MATCH(DMI_BOARD_NAME
, "P2B-DS"),
984 .callback
= force_acpi_ht
,
985 .ident
= "ASUS CUR-DLS",
987 DMI_MATCH(DMI_BOARD_VENDOR
, "ASUSTeK Computer INC."),
988 DMI_MATCH(DMI_BOARD_NAME
, "CUR-DLS"),
992 .callback
= force_acpi_ht
,
993 .ident
= "ABIT i440BX-W83977",
995 DMI_MATCH(DMI_BOARD_VENDOR
, "ABIT <http://www.abit.com>"),
996 DMI_MATCH(DMI_BOARD_NAME
, "i440BX-W83977 (BP6)"),
1000 .callback
= force_acpi_ht
,
1001 .ident
= "IBM Bladecenter",
1003 DMI_MATCH(DMI_BOARD_VENDOR
, "IBM"),
1004 DMI_MATCH(DMI_BOARD_NAME
, "IBM eServer BladeCenter HS20"),
1008 .callback
= force_acpi_ht
,
1009 .ident
= "IBM eServer xSeries 360",
1011 DMI_MATCH(DMI_BOARD_VENDOR
, "IBM"),
1012 DMI_MATCH(DMI_BOARD_NAME
, "eServer xSeries 360"),
1016 .callback
= force_acpi_ht
,
1017 .ident
= "IBM eserver xSeries 330",
1019 DMI_MATCH(DMI_BOARD_VENDOR
, "IBM"),
1020 DMI_MATCH(DMI_BOARD_NAME
, "eserver xSeries 330"),
1024 .callback
= force_acpi_ht
,
1025 .ident
= "IBM eserver xSeries 440",
1027 DMI_MATCH(DMI_BOARD_VENDOR
, "IBM"),
1028 DMI_MATCH(DMI_PRODUCT_NAME
, "eserver xSeries 440"),
1033 * Boxes that need ACPI PCI IRQ routing disabled
1036 .callback
= disable_acpi_irq
,
1037 .ident
= "ASUS A7V",
1039 DMI_MATCH(DMI_BOARD_VENDOR
, "ASUSTeK Computer INC"),
1040 DMI_MATCH(DMI_BOARD_NAME
, "<A7V>"),
1041 /* newer BIOS, Revision 1011, does work */
1042 DMI_MATCH(DMI_BIOS_VERSION
,
1043 "ASUS A7V ACPI BIOS Revision 1007"),
1048 * Boxes that need ACPI PCI IRQ routing and PCI scan disabled
1051 .callback
= disable_acpi_pci
,
1052 .ident
= "ASUS PR-DLS",
1054 DMI_MATCH(DMI_BOARD_VENDOR
, "ASUSTeK Computer INC."),
1055 DMI_MATCH(DMI_BOARD_NAME
, "PR-DLS"),
1056 DMI_MATCH(DMI_BIOS_VERSION
,
1057 "ASUS PR-DLS ACPI BIOS Revision 1010"),
1058 DMI_MATCH(DMI_BIOS_DATE
, "03/21/2003")
1062 .callback
= disable_acpi_pci
,
1063 .ident
= "Acer TravelMate 36x Laptop",
1065 DMI_MATCH(DMI_SYS_VENDOR
, "Acer"),
1066 DMI_MATCH(DMI_PRODUCT_NAME
, "TravelMate 360"),
1072 #endif /* __i386__ */
1075 * acpi_boot_table_init() and acpi_boot_init()
1076 * called from setup_arch(), always.
1077 * 1. checksums all tables
1078 * 2. enumerates lapics
1079 * 3. enumerates io-apics
1081 * acpi_table_init() is separate to allow reading SRAT without
1082 * other side effects.
1084 * side effects of acpi_boot_init:
1085 * acpi_lapic = 1 if LAPIC found
1086 * acpi_ioapic = 1 if IOAPIC found
1087 * if (acpi_lapic && acpi_ioapic) smp_found_config = 1;
1088 * if acpi_blacklisted() acpi_disabled = 1;
1089 * acpi_irq_model=...
1092 * return value: (currently ignored)
1097 int __init
acpi_boot_table_init(void)
1102 dmi_check_system(acpi_dmi_table
);
1106 * If acpi_disabled, bail out
1107 * One exception: acpi=ht continues far enough to enumerate LAPICs
1109 if (acpi_disabled
&& !acpi_ht
)
1113 * Initialize the ACPI boot-time table parser.
1115 error
= acpi_table_init();
1121 acpi_table_parse(ACPI_BOOT
, acpi_parse_sbf
);
1124 * blacklist may disable ACPI entirely
1126 error
= acpi_blacklisted();
1129 printk(KERN_WARNING PREFIX
"acpi=force override\n");
1131 printk(KERN_WARNING PREFIX
"Disabling ACPI support\n");
1140 int __init
acpi_boot_init(void)
1143 * If acpi_disabled, bail out
1144 * One exception: acpi=ht continues far enough to enumerate LAPICs
1146 if (acpi_disabled
&& !acpi_ht
)
1149 acpi_table_parse(ACPI_BOOT
, acpi_parse_sbf
);
1152 * set sci_int and PM timer address
1154 acpi_table_parse(ACPI_FADT
, acpi_parse_fadt
);
1157 * Process the Multiple APIC Description Table (MADT), if present
1159 acpi_process_madt();
1161 acpi_table_parse(ACPI_HPET
, acpi_parse_hpet
);