2 * boot.c - Architecture-Specific Low-Level ACPI Boot Support
4 * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
5 * Copyright (C) 2001 Jun Nakajima <jun.nakajima@intel.com>
7 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
26 #include <linux/init.h>
27 #include <linux/acpi.h>
28 #include <linux/efi.h>
29 #include <linux/cpumask.h>
30 #include <linux/module.h>
31 #include <linux/dmi.h>
32 #include <linux/irq.h>
33 #include <linux/bootmem.h>
34 #include <linux/ioport.h>
36 #include <asm/pgtable.h>
37 #include <asm/io_apic.h>
40 #include <asm/mpspec.h>
42 static int __initdata acpi_force
= 0;
45 int acpi_disabled
= 0;
47 int acpi_disabled
= 1;
49 EXPORT_SYMBOL(acpi_disabled
);
53 #include <asm/proto.h>
55 static inline int acpi_madt_oem_check(char *oem_id
, char *oem_table_id
) { return 0; }
60 #ifdef CONFIG_X86_LOCAL_APIC
61 #include <mach_apic.h>
62 #include <mach_mpparse.h>
63 #endif /* CONFIG_X86_LOCAL_APIC */
65 static inline int gsi_irq_sharing(int gsi
) { return gsi
; }
69 #define BAD_MADT_ENTRY(entry, end) ( \
70 (!entry) || (unsigned long)entry + sizeof(*entry) > end || \
71 ((acpi_table_entry_header *)entry)->length < sizeof(*entry))
73 #define PREFIX "ACPI: "
75 int acpi_noirq __initdata
; /* skip ACPI IRQ initialization */
76 int acpi_pci_disabled __initdata
; /* skip ACPI PCI scan and IRQ initialization */
77 int acpi_ht __initdata
= 1; /* enable HT */
82 EXPORT_SYMBOL(acpi_strict
);
84 acpi_interrupt_flags acpi_sci_flags __initdata
;
85 int acpi_sci_override_gsi __initdata
;
86 int acpi_skip_timer_override __initdata
;
88 #ifdef CONFIG_X86_LOCAL_APIC
89 static u64 acpi_lapic_addr __initdata
= APIC_DEFAULT_PHYS_BASE
;
92 #ifndef __HAVE_ARCH_CMPXCHG
93 #warning ACPI uses CMPXCHG, i486 and later hardware
96 #define MAX_MADT_ENTRIES 256
97 u8 x86_acpiid_to_apicid
[MAX_MADT_ENTRIES
] =
98 {[0 ... MAX_MADT_ENTRIES
- 1] = 0xff };
99 EXPORT_SYMBOL(x86_acpiid_to_apicid
);
101 /* --------------------------------------------------------------------------
102 Boot-time Configuration
103 -------------------------------------------------------------------------- */
106 * The default interrupt routing model is PIC (8259). This gets
107 * overriden if IOAPICs are enumerated (below).
109 enum acpi_irq_model_id acpi_irq_model
= ACPI_IRQ_MODEL_PIC
;
113 /* rely on all ACPI tables being in the direct mapping */
114 char *__acpi_map_table(unsigned long phys_addr
, unsigned long size
)
116 if (!phys_addr
|| !size
)
119 if (phys_addr
+size
<= (end_pfn_map
<< PAGE_SHIFT
) + PAGE_SIZE
)
120 return __va(phys_addr
);
128 * Temporarily use the virtual area starting from FIX_IO_APIC_BASE_END,
129 * to map the target physical address. The problem is that set_fixmap()
130 * provides a single page, and it is possible that the page is not
132 * By using this area, we can map up to MAX_IO_APICS pages temporarily,
133 * i.e. until the next __va_range() call.
135 * Important Safety Note: The fixed I/O APIC page numbers are *subtracted*
136 * from the fixed base. That's why we start at FIX_IO_APIC_BASE_END and
137 * count idx down while incrementing the phys address.
139 char *__acpi_map_table(unsigned long phys
, unsigned long size
)
141 unsigned long base
, offset
, mapped_size
;
144 if (phys
+ size
< 8 * 1024 * 1024)
147 offset
= phys
& (PAGE_SIZE
- 1);
148 mapped_size
= PAGE_SIZE
- offset
;
149 set_fixmap(FIX_ACPI_END
, phys
);
150 base
= fix_to_virt(FIX_ACPI_END
);
153 * Most cases can be covered by the below.
156 while (mapped_size
< size
) {
157 if (--idx
< FIX_ACPI_BEGIN
)
158 return NULL
; /* cannot handle this */
160 set_fixmap(idx
, phys
);
161 mapped_size
+= PAGE_SIZE
;
164 return ((unsigned char *)base
+ offset
);
168 #ifdef CONFIG_PCI_MMCONFIG
169 /* The physical address of the MMCONFIG aperture. Set from ACPI tables. */
170 struct acpi_table_mcfg_config
*pci_mmcfg_config
;
171 int pci_mmcfg_config_num
;
173 int __init
acpi_parse_mcfg(unsigned long phys_addr
, unsigned long size
)
175 struct acpi_table_mcfg
*mcfg
;
179 if (!phys_addr
|| !size
)
182 mcfg
= (struct acpi_table_mcfg
*)__acpi_map_table(phys_addr
, size
);
184 printk(KERN_WARNING PREFIX
"Unable to map MCFG\n");
188 /* how many config structures do we have */
189 pci_mmcfg_config_num
= 0;
190 i
= size
- sizeof(struct acpi_table_mcfg
);
191 while (i
>= sizeof(struct acpi_table_mcfg_config
)) {
192 ++pci_mmcfg_config_num
;
193 i
-= sizeof(struct acpi_table_mcfg_config
);
195 if (pci_mmcfg_config_num
== 0) {
196 printk(KERN_ERR PREFIX
"MMCONFIG has no entries\n");
200 config_size
= pci_mmcfg_config_num
* sizeof(*pci_mmcfg_config
);
201 pci_mmcfg_config
= kmalloc(config_size
, GFP_KERNEL
);
202 if (!pci_mmcfg_config
) {
203 printk(KERN_WARNING PREFIX
204 "No memory for MCFG config tables\n");
208 memcpy(pci_mmcfg_config
, &mcfg
->config
, config_size
);
209 for (i
= 0; i
< pci_mmcfg_config_num
; ++i
) {
210 if (mcfg
->config
[i
].base_reserved
) {
211 printk(KERN_ERR PREFIX
212 "MMCONFIG not in low 4GB of memory\n");
213 kfree(pci_mmcfg_config
);
214 pci_mmcfg_config_num
= 0;
221 #endif /* CONFIG_PCI_MMCONFIG */
223 #ifdef CONFIG_X86_LOCAL_APIC
224 static int __init
acpi_parse_madt(unsigned long phys_addr
, unsigned long size
)
226 struct acpi_table_madt
*madt
= NULL
;
228 if (!phys_addr
|| !size
|| !cpu_has_apic
)
231 madt
= (struct acpi_table_madt
*)__acpi_map_table(phys_addr
, size
);
233 printk(KERN_WARNING PREFIX
"Unable to map MADT\n");
237 if (madt
->lapic_address
) {
238 acpi_lapic_addr
= (u64
) madt
->lapic_address
;
240 printk(KERN_DEBUG PREFIX
"Local APIC address 0x%08x\n",
241 madt
->lapic_address
);
244 acpi_madt_oem_check(madt
->header
.oem_id
, madt
->header
.oem_table_id
);
250 acpi_parse_lapic(acpi_table_entry_header
* header
, const unsigned long end
)
252 struct acpi_table_lapic
*processor
= NULL
;
254 processor
= (struct acpi_table_lapic
*)header
;
256 if (BAD_MADT_ENTRY(processor
, end
))
259 acpi_table_print_madt_entry(header
);
261 /* Record local apic id only when enabled */
262 if (processor
->flags
.enabled
)
263 x86_acpiid_to_apicid
[processor
->acpi_id
] = processor
->id
;
266 * We need to register disabled CPU as well to permit
267 * counting disabled CPUs. This allows us to size
268 * cpus_possible_map more accurately, to permit
269 * to not preallocating memory for all NR_CPUS
270 * when we use CPU hotplug.
272 mp_register_lapic(processor
->id
, /* APIC ID */
273 processor
->flags
.enabled
); /* Enabled? */
279 acpi_parse_lapic_addr_ovr(acpi_table_entry_header
* header
,
280 const unsigned long end
)
282 struct acpi_table_lapic_addr_ovr
*lapic_addr_ovr
= NULL
;
284 lapic_addr_ovr
= (struct acpi_table_lapic_addr_ovr
*)header
;
286 if (BAD_MADT_ENTRY(lapic_addr_ovr
, end
))
289 acpi_lapic_addr
= lapic_addr_ovr
->address
;
295 acpi_parse_lapic_nmi(acpi_table_entry_header
* header
, const unsigned long end
)
297 struct acpi_table_lapic_nmi
*lapic_nmi
= NULL
;
299 lapic_nmi
= (struct acpi_table_lapic_nmi
*)header
;
301 if (BAD_MADT_ENTRY(lapic_nmi
, end
))
304 acpi_table_print_madt_entry(header
);
306 if (lapic_nmi
->lint
!= 1)
307 printk(KERN_WARNING PREFIX
"NMI not connected to LINT 1!\n");
312 #endif /*CONFIG_X86_LOCAL_APIC */
314 #ifdef CONFIG_X86_IO_APIC
317 acpi_parse_ioapic(acpi_table_entry_header
* header
, const unsigned long end
)
319 struct acpi_table_ioapic
*ioapic
= NULL
;
321 ioapic
= (struct acpi_table_ioapic
*)header
;
323 if (BAD_MADT_ENTRY(ioapic
, end
))
326 acpi_table_print_madt_entry(header
);
328 mp_register_ioapic(ioapic
->id
,
329 ioapic
->address
, ioapic
->global_irq_base
);
335 * Parse Interrupt Source Override for the ACPI SCI
337 static void acpi_sci_ioapic_setup(u32 gsi
, u16 polarity
, u16 trigger
)
339 if (trigger
== 0) /* compatible SCI trigger is level */
342 if (polarity
== 0) /* compatible SCI polarity is low */
345 /* Command-line over-ride via acpi_sci= */
346 if (acpi_sci_flags
.trigger
)
347 trigger
= acpi_sci_flags
.trigger
;
349 if (acpi_sci_flags
.polarity
)
350 polarity
= acpi_sci_flags
.polarity
;
353 * mp_config_acpi_legacy_irqs() already setup IRQs < 16
354 * If GSI is < 16, this will update its flags,
355 * else it will create a new mp_irqs[] entry.
357 mp_override_legacy_irq(gsi
, polarity
, trigger
, gsi
);
360 * stash over-ride to indicate we've been here
361 * and for later update of acpi_fadt
363 acpi_sci_override_gsi
= gsi
;
368 acpi_parse_int_src_ovr(acpi_table_entry_header
* header
,
369 const unsigned long end
)
371 struct acpi_table_int_src_ovr
*intsrc
= NULL
;
373 intsrc
= (struct acpi_table_int_src_ovr
*)header
;
375 if (BAD_MADT_ENTRY(intsrc
, end
))
378 acpi_table_print_madt_entry(header
);
380 if (intsrc
->bus_irq
== acpi_fadt
.sci_int
) {
381 acpi_sci_ioapic_setup(intsrc
->global_irq
,
382 intsrc
->flags
.polarity
,
383 intsrc
->flags
.trigger
);
387 if (acpi_skip_timer_override
&&
388 intsrc
->bus_irq
== 0 && intsrc
->global_irq
== 2) {
389 printk(PREFIX
"BIOS IRQ0 pin2 override ignored.\n");
393 mp_override_legacy_irq(intsrc
->bus_irq
,
394 intsrc
->flags
.polarity
,
395 intsrc
->flags
.trigger
, intsrc
->global_irq
);
401 acpi_parse_nmi_src(acpi_table_entry_header
* header
, const unsigned long end
)
403 struct acpi_table_nmi_src
*nmi_src
= NULL
;
405 nmi_src
= (struct acpi_table_nmi_src
*)header
;
407 if (BAD_MADT_ENTRY(nmi_src
, end
))
410 acpi_table_print_madt_entry(header
);
412 /* TBD: Support nimsrc entries? */
417 #endif /* CONFIG_X86_IO_APIC */
420 * acpi_pic_sci_set_trigger()
422 * use ELCR to set PIC-mode trigger type for SCI
424 * If a PIC-mode SCI is not recognized or gives spurious IRQ7's
425 * it may require Edge Trigger -- use "acpi_sci=edge"
427 * Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers
428 * for the 8259 PIC. bit[n] = 1 means irq[n] is Level, otherwise Edge.
429 * ECLR1 is IRQ's 0-7 (IRQ 0, 1, 2 must be 0)
430 * ECLR2 is IRQ's 8-15 (IRQ 8, 13 must be 0)
433 void __init
acpi_pic_sci_set_trigger(unsigned int irq
, u16 trigger
)
435 unsigned int mask
= 1 << irq
;
436 unsigned int old
, new;
438 /* Real old ELCR mask */
439 old
= inb(0x4d0) | (inb(0x4d1) << 8);
442 * If we use ACPI to set PCI irq's, then we should clear ELCR
443 * since we will set it correctly as we enable the PCI irq
446 new = acpi_noirq
? old
: 0;
449 * Update SCI information in the ELCR, it isn't in the PCI
453 case 1: /* Edge - clear */
456 case 3: /* Level - set */
464 printk(PREFIX
"setting ELCR to %04x (from %04x)\n", new, old
);
466 outb(new >> 8, 0x4d1);
469 int acpi_gsi_to_irq(u32 gsi
, unsigned int *irq
)
471 #ifdef CONFIG_X86_IO_APIC
472 if (use_pci_vector() && !platform_legacy_irq(gsi
))
473 *irq
= IO_APIC_VECTOR(gsi
);
476 *irq
= gsi_irq_sharing(gsi
);
481 * success: return IRQ number (>=0)
482 * failure: return < 0
484 int acpi_register_gsi(u32 gsi
, int triggering
, int polarity
)
487 unsigned int plat_gsi
= gsi
;
491 * Make sure all (legacy) PCI IRQs are set as level-triggered.
493 if (acpi_irq_model
== ACPI_IRQ_MODEL_PIC
) {
494 extern void eisa_set_level_irq(unsigned int irq
);
496 if (triggering
== ACPI_LEVEL_SENSITIVE
)
497 eisa_set_level_irq(gsi
);
501 #ifdef CONFIG_X86_IO_APIC
502 if (acpi_irq_model
== ACPI_IRQ_MODEL_IOAPIC
) {
503 plat_gsi
= mp_register_gsi(gsi
, triggering
, polarity
);
506 acpi_gsi_to_irq(plat_gsi
, &irq
);
510 EXPORT_SYMBOL(acpi_register_gsi
);
513 * ACPI based hotplug support for CPU
515 #ifdef CONFIG_ACPI_HOTPLUG_CPU
516 int acpi_map_lsapic(acpi_handle handle
, int *pcpu
)
518 struct acpi_buffer buffer
= { ACPI_ALLOCATE_BUFFER
, NULL
};
519 union acpi_object
*obj
;
520 struct acpi_table_lapic
*lapic
;
521 cpumask_t tmp_map
, new_map
;
525 if (ACPI_FAILURE(acpi_evaluate_object(handle
, "_MAT", NULL
, &buffer
)))
528 if (!buffer
.length
|| !buffer
.pointer
)
531 obj
= buffer
.pointer
;
532 if (obj
->type
!= ACPI_TYPE_BUFFER
||
533 obj
->buffer
.length
< sizeof(*lapic
)) {
534 kfree(buffer
.pointer
);
538 lapic
= (struct acpi_table_lapic
*)obj
->buffer
.pointer
;
540 if ((lapic
->header
.type
!= ACPI_MADT_LAPIC
) ||
541 (!lapic
->flags
.enabled
)) {
542 kfree(buffer
.pointer
);
548 kfree(buffer
.pointer
);
549 buffer
.length
= ACPI_ALLOCATE_BUFFER
;
550 buffer
.pointer
= NULL
;
552 tmp_map
= cpu_present_map
;
553 mp_register_lapic(physid
, lapic
->flags
.enabled
);
556 * If mp_register_lapic successfully generates a new logical cpu
557 * number, then the following will get us exactly what was mapped
559 cpus_andnot(new_map
, cpu_present_map
, tmp_map
);
560 if (cpus_empty(new_map
)) {
561 printk ("Unable to map lapic to logical cpu number\n");
565 cpu
= first_cpu(new_map
);
571 EXPORT_SYMBOL(acpi_map_lsapic
);
573 int acpi_unmap_lsapic(int cpu
)
577 for_each_possible_cpu(i
) {
578 if (x86_acpiid_to_apicid
[i
] == x86_cpu_to_apicid
[cpu
]) {
579 x86_acpiid_to_apicid
[i
] = -1;
583 x86_cpu_to_apicid
[cpu
] = -1;
584 cpu_clear(cpu
, cpu_present_map
);
590 EXPORT_SYMBOL(acpi_unmap_lsapic
);
591 #endif /* CONFIG_ACPI_HOTPLUG_CPU */
593 int acpi_register_ioapic(acpi_handle handle
, u64 phys_addr
, u32 gsi_base
)
599 EXPORT_SYMBOL(acpi_register_ioapic
);
601 int acpi_unregister_ioapic(acpi_handle handle
, u32 gsi_base
)
607 EXPORT_SYMBOL(acpi_unregister_ioapic
);
609 static unsigned long __init
610 acpi_scan_rsdp(unsigned long start
, unsigned long length
)
612 unsigned long offset
= 0;
613 unsigned long sig_len
= sizeof("RSD PTR ") - 1;
616 * Scan all 16-byte boundaries of the physical memory region for the
619 for (offset
= 0; offset
< length
; offset
+= 16) {
620 if (strncmp((char *)(phys_to_virt(start
) + offset
), "RSD PTR ", sig_len
))
622 return (start
+ offset
);
628 static int __init
acpi_parse_sbf(unsigned long phys_addr
, unsigned long size
)
630 struct acpi_table_sbf
*sb
;
632 if (!phys_addr
|| !size
)
635 sb
= (struct acpi_table_sbf
*)__acpi_map_table(phys_addr
, size
);
637 printk(KERN_WARNING PREFIX
"Unable to map SBF\n");
641 sbf_port
= sb
->sbf_cmos
; /* Save CMOS port */
646 #ifdef CONFIG_HPET_TIMER
648 static int __init
acpi_parse_hpet(unsigned long phys
, unsigned long size
)
650 struct acpi_table_hpet
*hpet_tbl
;
651 struct resource
*hpet_res
;
652 resource_size_t res_start
;
657 hpet_tbl
= (struct acpi_table_hpet
*)__acpi_map_table(phys
, size
);
659 printk(KERN_WARNING PREFIX
"Unable to map HPET\n");
663 if (hpet_tbl
->addr
.space_id
!= ACPI_SPACE_MEM
) {
664 printk(KERN_WARNING PREFIX
"HPET timers must be located in "
669 #define HPET_RESOURCE_NAME_SIZE 9
670 hpet_res
= alloc_bootmem(sizeof(*hpet_res
) + HPET_RESOURCE_NAME_SIZE
);
672 memset(hpet_res
, 0, sizeof(*hpet_res
));
673 hpet_res
->name
= (void *)&hpet_res
[1];
674 hpet_res
->flags
= IORESOURCE_MEM
| IORESOURCE_BUSY
;
675 snprintf((char *)hpet_res
->name
, HPET_RESOURCE_NAME_SIZE
,
676 "HPET %u", hpet_tbl
->number
);
677 hpet_res
->end
= (1 * 1024) - 1;
681 vxtime
.hpet_address
= hpet_tbl
->addr
.addrl
|
682 ((long)hpet_tbl
->addr
.addrh
<< 32);
684 printk(KERN_INFO PREFIX
"HPET id: %#x base: %#lx\n",
685 hpet_tbl
->id
, vxtime
.hpet_address
);
687 res_start
= vxtime
.hpet_address
;
690 extern unsigned long hpet_address
;
692 hpet_address
= hpet_tbl
->addr
.addrl
;
693 printk(KERN_INFO PREFIX
"HPET id: %#x base: %#lx\n",
694 hpet_tbl
->id
, hpet_address
);
696 res_start
= hpet_address
;
701 hpet_res
->start
= res_start
;
702 hpet_res
->end
+= res_start
;
703 insert_resource(&iomem_resource
, hpet_res
);
709 #define acpi_parse_hpet NULL
712 #ifdef CONFIG_X86_PM_TIMER
713 extern u32 pmtmr_ioport
;
716 static int __init
acpi_parse_fadt(unsigned long phys
, unsigned long size
)
718 struct fadt_descriptor
*fadt
= NULL
;
720 fadt
= (struct fadt_descriptor
*)__acpi_map_table(phys
, size
);
722 printk(KERN_WARNING PREFIX
"Unable to map FADT\n");
725 /* initialize sci_int early for INT_SRC_OVR MADT parsing */
726 acpi_fadt
.sci_int
= fadt
->sci_int
;
728 /* initialize rev and apic_phys_dest_mode for x86_64 genapic */
729 acpi_fadt
.revision
= fadt
->revision
;
730 acpi_fadt
.force_apic_physical_destination_mode
=
731 fadt
->force_apic_physical_destination_mode
;
733 #ifdef CONFIG_X86_PM_TIMER
734 /* detect the location of the ACPI PM Timer */
735 if (fadt
->revision
>= FADT2_REVISION_ID
) {
737 if (fadt
->xpm_tmr_blk
.address_space_id
!=
738 ACPI_ADR_SPACE_SYSTEM_IO
)
741 pmtmr_ioport
= fadt
->xpm_tmr_blk
.address
;
743 * "X" fields are optional extensions to the original V1.0
744 * fields, so we must selectively expand V1.0 fields if the
745 * corresponding X field is zero.
748 pmtmr_ioport
= fadt
->V1_pm_tmr_blk
;
751 pmtmr_ioport
= fadt
->V1_pm_tmr_blk
;
754 printk(KERN_INFO PREFIX
"PM-Timer IO Port: %#x\n",
760 unsigned long __init
acpi_find_rsdp(void)
762 unsigned long rsdp_phys
= 0;
765 if (efi
.acpi20
!= EFI_INVALID_TABLE_ADDR
)
767 else if (efi
.acpi
!= EFI_INVALID_TABLE_ADDR
)
771 * Scan memory looking for the RSDP signature. First search EBDA (low
772 * memory) paragraphs and then search upper memory (E0000-FFFFF).
774 rsdp_phys
= acpi_scan_rsdp(0, 0x400);
776 rsdp_phys
= acpi_scan_rsdp(0xE0000, 0x20000);
781 #ifdef CONFIG_X86_LOCAL_APIC
783 * Parse LAPIC entries in MADT
784 * returns 0 on success, < 0 on error
786 static int __init
acpi_parse_madt_lapic_entries(void)
794 * Note that the LAPIC address is obtained from the MADT (32-bit value)
795 * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value).
799 acpi_table_parse_madt(ACPI_MADT_LAPIC_ADDR_OVR
,
800 acpi_parse_lapic_addr_ovr
, 0);
802 printk(KERN_ERR PREFIX
803 "Error parsing LAPIC address override entry\n");
807 mp_register_lapic_address(acpi_lapic_addr
);
809 count
= acpi_table_parse_madt(ACPI_MADT_LAPIC
, acpi_parse_lapic
,
812 printk(KERN_ERR PREFIX
"No LAPIC entries present\n");
813 /* TBD: Cleanup to allow fallback to MPS */
815 } else if (count
< 0) {
816 printk(KERN_ERR PREFIX
"Error parsing LAPIC entry\n");
817 /* TBD: Cleanup to allow fallback to MPS */
822 acpi_table_parse_madt(ACPI_MADT_LAPIC_NMI
, acpi_parse_lapic_nmi
, 0);
824 printk(KERN_ERR PREFIX
"Error parsing LAPIC NMI entry\n");
825 /* TBD: Cleanup to allow fallback to MPS */
830 #endif /* CONFIG_X86_LOCAL_APIC */
832 #ifdef CONFIG_X86_IO_APIC
834 * Parse IOAPIC related entries in MADT
835 * returns 0 on success, < 0 on error
837 static int __init
acpi_parse_madt_ioapic_entries(void)
842 * ACPI interpreter is required to complete interrupt setup,
843 * so if it is off, don't enumerate the io-apics with ACPI.
844 * If MPS is present, it will handle them,
845 * otherwise the system will stay in PIC mode
847 if (acpi_disabled
|| acpi_noirq
) {
855 * if "noapic" boot option, don't look for IO-APICs
857 if (skip_ioapic_setup
) {
858 printk(KERN_INFO PREFIX
"Skipping IOAPIC probe "
859 "due to 'noapic' option.\n");
864 acpi_table_parse_madt(ACPI_MADT_IOAPIC
, acpi_parse_ioapic
,
867 printk(KERN_ERR PREFIX
"No IOAPIC entries present\n");
869 } else if (count
< 0) {
870 printk(KERN_ERR PREFIX
"Error parsing IOAPIC entry\n");
875 acpi_table_parse_madt(ACPI_MADT_INT_SRC_OVR
, acpi_parse_int_src_ovr
,
878 printk(KERN_ERR PREFIX
879 "Error parsing interrupt source overrides entry\n");
880 /* TBD: Cleanup to allow fallback to MPS */
885 * If BIOS did not supply an INT_SRC_OVR for the SCI
886 * pretend we got one so we can set the SCI flags.
888 if (!acpi_sci_override_gsi
)
889 acpi_sci_ioapic_setup(acpi_fadt
.sci_int
, 0, 0);
891 /* Fill in identity legacy mapings where no override */
892 mp_config_acpi_legacy_irqs();
895 acpi_table_parse_madt(ACPI_MADT_NMI_SRC
, acpi_parse_nmi_src
,
898 printk(KERN_ERR PREFIX
"Error parsing NMI SRC entry\n");
899 /* TBD: Cleanup to allow fallback to MPS */
906 static inline int acpi_parse_madt_ioapic_entries(void)
910 #endif /* !CONFIG_X86_IO_APIC */
912 static void __init
acpi_process_madt(void)
914 #ifdef CONFIG_X86_LOCAL_APIC
917 count
= acpi_table_parse(ACPI_APIC
, acpi_parse_madt
);
921 * Parse MADT LAPIC entries
923 error
= acpi_parse_madt_lapic_entries();
927 #ifdef CONFIG_X86_GENERICARCH
928 generic_bigsmp_probe();
931 * Parse MADT IO-APIC entries
933 error
= acpi_parse_madt_ioapic_entries();
935 acpi_irq_model
= ACPI_IRQ_MODEL_IOAPIC
;
936 acpi_irq_balance_set(NULL
);
939 smp_found_config
= 1;
940 clustered_apic_check();
943 if (error
== -EINVAL
) {
945 * Dell Precision Workstation 410, 610 come here.
947 printk(KERN_ERR PREFIX
948 "Invalid BIOS MADT, disabling ACPI\n");
958 static int __init
disable_acpi_irq(struct dmi_system_id
*d
)
961 printk(KERN_NOTICE
"%s detected: force use of acpi=noirq\n",
968 static int __init
disable_acpi_pci(struct dmi_system_id
*d
)
971 printk(KERN_NOTICE
"%s detected: force use of pci=noacpi\n",
978 static int __init
dmi_disable_acpi(struct dmi_system_id
*d
)
981 printk(KERN_NOTICE
"%s detected: acpi off\n", d
->ident
);
985 "Warning: DMI blacklist says broken, but acpi forced\n");
991 * Limit ACPI to CPU enumeration for HT
993 static int __init
force_acpi_ht(struct dmi_system_id
*d
)
996 printk(KERN_NOTICE
"%s detected: force use of acpi=ht\n",
1002 "Warning: acpi=force overrules DMI blacklist: acpi=ht\n");
1008 * If your system is blacklisted here, but you find that acpi=force
1009 * works for you, please contact acpi-devel@sourceforge.net
1011 static struct dmi_system_id __initdata acpi_dmi_table
[] = {
1013 * Boxes that need ACPI disabled
1016 .callback
= dmi_disable_acpi
,
1017 .ident
= "IBM Thinkpad",
1019 DMI_MATCH(DMI_BOARD_VENDOR
, "IBM"),
1020 DMI_MATCH(DMI_BOARD_NAME
, "2629H1G"),
1025 * Boxes that need acpi=ht
1028 .callback
= force_acpi_ht
,
1029 .ident
= "FSC Primergy T850",
1031 DMI_MATCH(DMI_SYS_VENDOR
, "FUJITSU SIEMENS"),
1032 DMI_MATCH(DMI_PRODUCT_NAME
, "PRIMERGY T850"),
1036 .callback
= force_acpi_ht
,
1037 .ident
= "DELL GX240",
1039 DMI_MATCH(DMI_BOARD_VENDOR
, "Dell Computer Corporation"),
1040 DMI_MATCH(DMI_BOARD_NAME
, "OptiPlex GX240"),
1044 .callback
= force_acpi_ht
,
1045 .ident
= "HP VISUALIZE NT Workstation",
1047 DMI_MATCH(DMI_BOARD_VENDOR
, "Hewlett-Packard"),
1048 DMI_MATCH(DMI_PRODUCT_NAME
, "HP VISUALIZE NT Workstation"),
1052 .callback
= force_acpi_ht
,
1053 .ident
= "Compaq Workstation W8000",
1055 DMI_MATCH(DMI_SYS_VENDOR
, "Compaq"),
1056 DMI_MATCH(DMI_PRODUCT_NAME
, "Workstation W8000"),
1060 .callback
= force_acpi_ht
,
1061 .ident
= "ASUS P4B266",
1063 DMI_MATCH(DMI_BOARD_VENDOR
, "ASUSTeK Computer INC."),
1064 DMI_MATCH(DMI_BOARD_NAME
, "P4B266"),
1068 .callback
= force_acpi_ht
,
1069 .ident
= "ASUS P2B-DS",
1071 DMI_MATCH(DMI_BOARD_VENDOR
, "ASUSTeK Computer INC."),
1072 DMI_MATCH(DMI_BOARD_NAME
, "P2B-DS"),
1076 .callback
= force_acpi_ht
,
1077 .ident
= "ASUS CUR-DLS",
1079 DMI_MATCH(DMI_BOARD_VENDOR
, "ASUSTeK Computer INC."),
1080 DMI_MATCH(DMI_BOARD_NAME
, "CUR-DLS"),
1084 .callback
= force_acpi_ht
,
1085 .ident
= "ABIT i440BX-W83977",
1087 DMI_MATCH(DMI_BOARD_VENDOR
, "ABIT <http://www.abit.com>"),
1088 DMI_MATCH(DMI_BOARD_NAME
, "i440BX-W83977 (BP6)"),
1092 .callback
= force_acpi_ht
,
1093 .ident
= "IBM Bladecenter",
1095 DMI_MATCH(DMI_BOARD_VENDOR
, "IBM"),
1096 DMI_MATCH(DMI_BOARD_NAME
, "IBM eServer BladeCenter HS20"),
1100 .callback
= force_acpi_ht
,
1101 .ident
= "IBM eServer xSeries 360",
1103 DMI_MATCH(DMI_BOARD_VENDOR
, "IBM"),
1104 DMI_MATCH(DMI_BOARD_NAME
, "eServer xSeries 360"),
1108 .callback
= force_acpi_ht
,
1109 .ident
= "IBM eserver xSeries 330",
1111 DMI_MATCH(DMI_BOARD_VENDOR
, "IBM"),
1112 DMI_MATCH(DMI_BOARD_NAME
, "eserver xSeries 330"),
1116 .callback
= force_acpi_ht
,
1117 .ident
= "IBM eserver xSeries 440",
1119 DMI_MATCH(DMI_BOARD_VENDOR
, "IBM"),
1120 DMI_MATCH(DMI_PRODUCT_NAME
, "eserver xSeries 440"),
1125 * Boxes that need ACPI PCI IRQ routing disabled
1128 .callback
= disable_acpi_irq
,
1129 .ident
= "ASUS A7V",
1131 DMI_MATCH(DMI_BOARD_VENDOR
, "ASUSTeK Computer INC"),
1132 DMI_MATCH(DMI_BOARD_NAME
, "<A7V>"),
1133 /* newer BIOS, Revision 1011, does work */
1134 DMI_MATCH(DMI_BIOS_VERSION
,
1135 "ASUS A7V ACPI BIOS Revision 1007"),
1140 * Boxes that need ACPI PCI IRQ routing and PCI scan disabled
1143 .callback
= disable_acpi_pci
,
1144 .ident
= "ASUS PR-DLS",
1146 DMI_MATCH(DMI_BOARD_VENDOR
, "ASUSTeK Computer INC."),
1147 DMI_MATCH(DMI_BOARD_NAME
, "PR-DLS"),
1148 DMI_MATCH(DMI_BIOS_VERSION
,
1149 "ASUS PR-DLS ACPI BIOS Revision 1010"),
1150 DMI_MATCH(DMI_BIOS_DATE
, "03/21/2003")
1154 .callback
= disable_acpi_pci
,
1155 .ident
= "Acer TravelMate 36x Laptop",
1157 DMI_MATCH(DMI_SYS_VENDOR
, "Acer"),
1158 DMI_MATCH(DMI_PRODUCT_NAME
, "TravelMate 360"),
1164 #endif /* __i386__ */
1167 * acpi_boot_table_init() and acpi_boot_init()
1168 * called from setup_arch(), always.
1169 * 1. checksums all tables
1170 * 2. enumerates lapics
1171 * 3. enumerates io-apics
1173 * acpi_table_init() is separate to allow reading SRAT without
1174 * other side effects.
1176 * side effects of acpi_boot_init:
1177 * acpi_lapic = 1 if LAPIC found
1178 * acpi_ioapic = 1 if IOAPIC found
1179 * if (acpi_lapic && acpi_ioapic) smp_found_config = 1;
1180 * if acpi_blacklisted() acpi_disabled = 1;
1181 * acpi_irq_model=...
1184 * return value: (currently ignored)
1189 int __init
acpi_boot_table_init(void)
1194 dmi_check_system(acpi_dmi_table
);
1198 * If acpi_disabled, bail out
1199 * One exception: acpi=ht continues far enough to enumerate LAPICs
1201 if (acpi_disabled
&& !acpi_ht
)
1205 * Initialize the ACPI boot-time table parser.
1207 error
= acpi_table_init();
1213 acpi_table_parse(ACPI_BOOT
, acpi_parse_sbf
);
1216 * blacklist may disable ACPI entirely
1218 error
= acpi_blacklisted();
1221 printk(KERN_WARNING PREFIX
"acpi=force override\n");
1223 printk(KERN_WARNING PREFIX
"Disabling ACPI support\n");
1232 int __init
acpi_boot_init(void)
1235 * If acpi_disabled, bail out
1236 * One exception: acpi=ht continues far enough to enumerate LAPICs
1238 if (acpi_disabled
&& !acpi_ht
)
1241 acpi_table_parse(ACPI_BOOT
, acpi_parse_sbf
);
1244 * set sci_int and PM timer address
1246 acpi_table_parse(ACPI_FADT
, acpi_parse_fadt
);
1249 * Process the Multiple APIC Description Table (MADT), if present
1251 acpi_process_madt();
1253 acpi_table_parse(ACPI_HPET
, acpi_parse_hpet
);
1258 static int __init
parse_acpi(char *arg
)
1263 /* "acpi=off" disables both ACPI table parsing and interpreter */
1264 if (strcmp(arg
, "off") == 0) {
1267 /* acpi=force to over-ride black-list */
1268 else if (strcmp(arg
, "force") == 0) {
1273 /* acpi=strict disables out-of-spec workarounds */
1274 else if (strcmp(arg
, "strict") == 0) {
1277 /* Limit ACPI just to boot-time to enable HT */
1278 else if (strcmp(arg
, "ht") == 0) {
1283 /* "acpi=noirq" disables ACPI interrupt routing */
1284 else if (strcmp(arg
, "noirq") == 0) {
1287 /* Core will printk when we return error. */
1292 early_param("acpi", parse_acpi
);
1294 /* FIXME: Using pci= for an ACPI parameter is a travesty. */
1295 static int __init
parse_pci(char *arg
)
1297 if (arg
&& strcmp(arg
, "noacpi") == 0)
1301 early_param("pci", parse_pci
);
1303 #ifdef CONFIG_X86_IO_APIC
1304 static int __init
parse_acpi_skip_timer_override(char *arg
)
1306 acpi_skip_timer_override
= 1;
1309 early_param("acpi_skip_timer_override", parse_acpi_skip_timer_override
);
1310 #endif /* CONFIG_X86_IO_APIC */
1312 static int __init
setup_acpi_sci(char *s
)
1316 if (!strcmp(s
, "edge"))
1317 acpi_sci_flags
.trigger
= 1;
1318 else if (!strcmp(s
, "level"))
1319 acpi_sci_flags
.trigger
= 3;
1320 else if (!strcmp(s
, "high"))
1321 acpi_sci_flags
.polarity
= 1;
1322 else if (!strcmp(s
, "low"))
1323 acpi_sci_flags
.polarity
= 3;
1328 early_param("acpi_sci", setup_acpi_sci
);