617 lines
15 KiB
C
617 lines
15 KiB
C
/*
|
|
* boot.c - Architecture-Specific Low-Level ACPI Boot Support
|
|
*
|
|
* Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
|
|
* Copyright (C) 2001 Jun Nakajima <jun.nakajima@intel.com>
|
|
*
|
|
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*
|
|
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
*/
|
|
|
|
#include <linux/init.h>
|
|
#include <linux/acpi.h>
|
|
#include <linux/module.h>
|
|
#include <linux/dmi.h>
|
|
#include <linux/pci.h>
|
|
|
|
static inline void outb(u8 v, u16 port)
|
|
{
|
|
asm volatile("outb %0,%1" : : "a" (v), "dN" (port));
|
|
}
|
|
static inline u8 inb(u16 port)
|
|
{
|
|
u8 v;
|
|
asm volatile("inb %1,%0" : "=a" (v) : "dN" (port));
|
|
return v;
|
|
}
|
|
|
|
|
|
static int __initdata acpi_force = 0;
|
|
int acpi_disabled;
|
|
EXPORT_SYMBOL(acpi_disabled);
|
|
|
|
#ifdef CONFIG_X86_64
|
|
# include <asm/proto.h>
|
|
#endif /* X86 */
|
|
|
|
#define PREFIX "ACPI: "
|
|
|
|
int acpi_noirq; /* skip ACPI IRQ initialization */
|
|
int acpi_pci_disabled; /* skip ACPI PCI scan and IRQ initialization */
|
|
EXPORT_SYMBOL(acpi_pci_disabled);
|
|
|
|
int acpi_ioapic;
|
|
int acpi_strict;
|
|
u8 acpi_sci_flags __initdata;
|
|
/*
|
|
* acpi_pic_sci_set_trigger()
|
|
*
|
|
* use ELCR to set PIC-mode trigger type for SCI
|
|
*
|
|
* If a PIC-mode SCI is not recognized or gives spurious IRQ7's
|
|
* it may require Edge Trigger -- use "acpi_sci=edge"
|
|
*
|
|
* Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers
|
|
* for the 8259 PIC. bit[n] = 1 means irq[n] is Level, otherwise Edge.
|
|
* ECLR1 is IRQs 0-7 (IRQ 0, 1, 2 must be 0)
|
|
* ECLR2 is IRQs 8-15 (IRQ 8, 13 must be 0)
|
|
*/
|
|
|
|
void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger)
|
|
{
|
|
unsigned int mask = 1 << irq;
|
|
unsigned int old, new;
|
|
|
|
/* Real old ELCR mask */
|
|
// old = inb(0x4d0) | (inb(0x4d1) << 8);
|
|
|
|
/*
|
|
* If we use ACPI to set PCI IRQs, then we should clear ELCR
|
|
* since we will set it correctly as we enable the PCI irq
|
|
* routing.
|
|
*/
|
|
new = acpi_noirq ? old : 0;
|
|
|
|
/*
|
|
* Update SCI information in the ELCR, it isn't in the PCI
|
|
* routing tables..
|
|
*/
|
|
switch (trigger) {
|
|
case 1: /* Edge - clear */
|
|
new &= ~mask;
|
|
break;
|
|
case 3: /* Level - set */
|
|
new |= mask;
|
|
break;
|
|
}
|
|
|
|
if (old == new)
|
|
return;
|
|
|
|
printk(PREFIX "setting ELCR to %04x (from %04x)\n", new, old);
|
|
// outb(new, 0x4d0);
|
|
// outb(new >> 8, 0x4d1);
|
|
}
|
|
|
|
static int __init acpi_parse_sbf(struct acpi_table_header *table)
|
|
{
|
|
struct acpi_table_boot *sb = (struct acpi_table_boot *)table;
|
|
|
|
sbf_port = sb->cmos_index; /* Save CMOS port */
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_HPET_TIMER
|
|
#include <asm/hpet.h>
|
|
|
|
static struct resource *hpet_res __initdata;
|
|
|
|
static int __init acpi_parse_hpet(struct acpi_table_header *table)
|
|
{
|
|
struct acpi_table_hpet *hpet_tbl = (struct acpi_table_hpet *)table;
|
|
|
|
if (hpet_tbl->address.space_id != ACPI_SPACE_MEM) {
|
|
printk(KERN_WARNING PREFIX "HPET timers must be located in "
|
|
"memory.\n");
|
|
return -1;
|
|
}
|
|
|
|
hpet_address = hpet_tbl->address.address;
|
|
hpet_blockid = hpet_tbl->sequence;
|
|
|
|
/*
|
|
* Some broken BIOSes advertise HPET at 0x0. We really do not
|
|
* want to allocate a resource there.
|
|
*/
|
|
if (!hpet_address) {
|
|
printk(KERN_WARNING PREFIX
|
|
"HPET id: %#x base: %#lx is invalid\n",
|
|
hpet_tbl->id, hpet_address);
|
|
return 0;
|
|
}
|
|
#ifdef CONFIG_X86_64
|
|
/*
|
|
* Some even more broken BIOSes advertise HPET at
|
|
* 0xfed0000000000000 instead of 0xfed00000. Fix it up and add
|
|
* some noise:
|
|
*/
|
|
if (hpet_address == 0xfed0000000000000UL) {
|
|
if (!hpet_force_user) {
|
|
printk(KERN_WARNING PREFIX "HPET id: %#x "
|
|
"base: 0xfed0000000000000 is bogus\n "
|
|
"try hpet=force on the kernel command line to "
|
|
"fix it up to 0xfed00000.\n", hpet_tbl->id);
|
|
hpet_address = 0;
|
|
return 0;
|
|
}
|
|
printk(KERN_WARNING PREFIX
|
|
"HPET id: %#x base: 0xfed0000000000000 fixed up "
|
|
"to 0xfed00000.\n", hpet_tbl->id);
|
|
hpet_address >>= 32;
|
|
}
|
|
#endif
|
|
printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n",
|
|
hpet_tbl->id, hpet_address);
|
|
|
|
/*
|
|
* Allocate and initialize the HPET firmware resource for adding into
|
|
* the resource tree during the lateinit timeframe.
|
|
*/
|
|
#define HPET_RESOURCE_NAME_SIZE 9
|
|
hpet_res = alloc_bootmem(sizeof(*hpet_res) + HPET_RESOURCE_NAME_SIZE);
|
|
|
|
hpet_res->name = (void *)&hpet_res[1];
|
|
hpet_res->flags = IORESOURCE_MEM;
|
|
snprintf((char *)hpet_res->name, HPET_RESOURCE_NAME_SIZE, "HPET %u",
|
|
hpet_tbl->sequence);
|
|
|
|
hpet_res->start = hpet_address;
|
|
hpet_res->end = hpet_address + (1 * 1024) - 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* hpet_insert_resource inserts the HPET resources used into the resource
|
|
* tree.
|
|
*/
|
|
static __init int hpet_insert_resource(void)
|
|
{
|
|
if (!hpet_res)
|
|
return 1;
|
|
|
|
return insert_resource(&iomem_resource, hpet_res);
|
|
}
|
|
|
|
late_initcall(hpet_insert_resource);
|
|
|
|
#else
|
|
#define acpi_parse_hpet NULL
|
|
#endif
|
|
|
|
static int __init acpi_parse_fadt(struct acpi_table_header *table)
|
|
{
|
|
|
|
#ifdef CONFIG_X86_PM_TIMER
|
|
/* detect the location of the ACPI PM Timer */
|
|
if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID) {
|
|
/* FADT rev. 2 */
|
|
if (acpi_gbl_FADT.xpm_timer_block.space_id !=
|
|
ACPI_ADR_SPACE_SYSTEM_IO)
|
|
return 0;
|
|
|
|
pmtmr_ioport = acpi_gbl_FADT.xpm_timer_block.address;
|
|
/*
|
|
* "X" fields are optional extensions to the original V1.0
|
|
* fields, so we must selectively expand V1.0 fields if the
|
|
* corresponding X field is zero.
|
|
*/
|
|
if (!pmtmr_ioport)
|
|
pmtmr_ioport = acpi_gbl_FADT.pm_timer_block;
|
|
} else {
|
|
/* FADT rev. 1 */
|
|
pmtmr_ioport = acpi_gbl_FADT.pm_timer_block;
|
|
}
|
|
if (pmtmr_ioport)
|
|
printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n",
|
|
pmtmr_ioport);
|
|
#endif
|
|
return 0;
|
|
}
|
|
|
|
|
|
#ifdef CONFIG_X86_IO_APIC
|
|
#else
|
|
static inline int acpi_parse_madt_ioapic_entries(void)
|
|
{
|
|
return -1;
|
|
}
|
|
#endif /* !CONFIG_X86_IO_APIC */
|
|
|
|
static void __init early_acpi_process_madt(void)
|
|
{
|
|
#ifdef CONFIG_X86_LOCAL_APIC
|
|
int error;
|
|
|
|
if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
|
|
|
|
/*
|
|
* Parse MADT LAPIC entries
|
|
*/
|
|
error = early_acpi_parse_madt_lapic_addr_ovr();
|
|
if (!error) {
|
|
acpi_lapic = 1;
|
|
smp_found_config = 1;
|
|
}
|
|
if (error == -EINVAL) {
|
|
/*
|
|
* Dell Precision Workstation 410, 610 come here.
|
|
*/
|
|
printk(KERN_ERR PREFIX
|
|
"Invalid BIOS MADT, disabling ACPI\n");
|
|
disable_acpi();
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
static void __init acpi_process_madt(void)
|
|
{
|
|
#ifdef CONFIG_X86_LOCAL_APIC
|
|
int error;
|
|
|
|
if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) {
|
|
|
|
/*
|
|
* Parse MADT LAPIC entries
|
|
*/
|
|
error = acpi_parse_madt_lapic_entries();
|
|
if (!error) {
|
|
acpi_lapic = 1;
|
|
|
|
/*
|
|
* Parse MADT IO-APIC entries
|
|
*/
|
|
mutex_lock(&acpi_ioapic_lock);
|
|
error = acpi_parse_madt_ioapic_entries();
|
|
mutex_unlock(&acpi_ioapic_lock);
|
|
if (!error) {
|
|
acpi_set_irq_model_ioapic();
|
|
|
|
smp_found_config = 1;
|
|
}
|
|
}
|
|
if (error == -EINVAL) {
|
|
/*
|
|
* Dell Precision Workstation 410, 610 come here.
|
|
*/
|
|
printk(KERN_ERR PREFIX
|
|
"Invalid BIOS MADT, disabling ACPI\n");
|
|
disable_acpi();
|
|
}
|
|
} else {
|
|
/*
|
|
* ACPI found no MADT, and so ACPI wants UP PIC mode.
|
|
* In the event an MPS table was found, forget it.
|
|
* Boot with "acpi=off" to use MPS on such a system.
|
|
*/
|
|
if (smp_found_config) {
|
|
printk(KERN_WARNING PREFIX
|
|
"No APIC-table, disabling MPS\n");
|
|
smp_found_config = 0;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* ACPI supports both logical (e.g. Hyper-Threading) and physical
|
|
* processors, where MPS only supports physical.
|
|
*/
|
|
if (acpi_lapic && acpi_ioapic)
|
|
printk(KERN_INFO "Using ACPI (MADT) for SMP configuration "
|
|
"information\n");
|
|
else if (acpi_lapic)
|
|
printk(KERN_INFO "Using ACPI for processor (LAPIC) "
|
|
"configuration information\n");
|
|
#endif
|
|
return;
|
|
}
|
|
|
|
static int __init disable_acpi_irq(const struct dmi_system_id *d)
|
|
{
|
|
if (!acpi_force) {
|
|
printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n",
|
|
d->ident);
|
|
acpi_noirq_set();
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int __init disable_acpi_pci(const struct dmi_system_id *d)
|
|
{
|
|
if (!acpi_force) {
|
|
printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n",
|
|
d->ident);
|
|
acpi_disable_pci();
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int __init dmi_disable_acpi(const struct dmi_system_id *d)
|
|
{
|
|
if (!acpi_force) {
|
|
printk(KERN_NOTICE "%s detected: acpi off\n", d->ident);
|
|
disable_acpi();
|
|
} else {
|
|
printk(KERN_NOTICE
|
|
"Warning: DMI blacklist says broken, but acpi forced\n");
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Force ignoring BIOS IRQ0 override
|
|
*/
|
|
static int __init dmi_ignore_irq0_timer_override(const struct dmi_system_id *d)
|
|
{
|
|
if (!acpi_skip_timer_override) {
|
|
pr_notice("%s detected: Ignoring BIOS IRQ0 override\n",
|
|
d->ident);
|
|
acpi_skip_timer_override = 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* If your system is blacklisted here, but you find that acpi=force
|
|
* works for you, please contact linux-acpi@vger.kernel.org
|
|
*/
|
|
static struct dmi_system_id __initdata acpi_dmi_table[] = {
|
|
/*
|
|
* Boxes that need ACPI disabled
|
|
*/
|
|
{
|
|
.callback = dmi_disable_acpi,
|
|
.ident = "IBM Thinkpad",
|
|
.matches = {
|
|
DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
|
|
DMI_MATCH(DMI_BOARD_NAME, "2629H1G"),
|
|
},
|
|
},
|
|
|
|
/*
|
|
* Boxes that need ACPI PCI IRQ routing disabled
|
|
*/
|
|
{
|
|
.callback = disable_acpi_irq,
|
|
.ident = "ASUS A7V",
|
|
.matches = {
|
|
DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"),
|
|
DMI_MATCH(DMI_BOARD_NAME, "<A7V>"),
|
|
/* newer BIOS, Revision 1011, does work */
|
|
DMI_MATCH(DMI_BIOS_VERSION,
|
|
"ASUS A7V ACPI BIOS Revision 1007"),
|
|
},
|
|
},
|
|
{
|
|
/*
|
|
* Latest BIOS for IBM 600E (1.16) has bad pcinum
|
|
* for LPC bridge, which is needed for the PCI
|
|
* interrupt links to work. DSDT fix is in bug 5966.
|
|
* 2645, 2646 model numbers are shared with 600/600E/600X
|
|
*/
|
|
.callback = disable_acpi_irq,
|
|
.ident = "IBM Thinkpad 600 Series 2645",
|
|
.matches = {
|
|
DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
|
|
DMI_MATCH(DMI_BOARD_NAME, "2645"),
|
|
},
|
|
},
|
|
{
|
|
.callback = disable_acpi_irq,
|
|
.ident = "IBM Thinkpad 600 Series 2646",
|
|
.matches = {
|
|
DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),
|
|
DMI_MATCH(DMI_BOARD_NAME, "2646"),
|
|
},
|
|
},
|
|
/*
|
|
* Boxes that need ACPI PCI IRQ routing and PCI scan disabled
|
|
*/
|
|
{ /* _BBN 0 bug */
|
|
.callback = disable_acpi_pci,
|
|
.ident = "ASUS PR-DLS",
|
|
.matches = {
|
|
DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
|
|
DMI_MATCH(DMI_BOARD_NAME, "PR-DLS"),
|
|
DMI_MATCH(DMI_BIOS_VERSION,
|
|
"ASUS PR-DLS ACPI BIOS Revision 1010"),
|
|
DMI_MATCH(DMI_BIOS_DATE, "03/21/2003")
|
|
},
|
|
},
|
|
{
|
|
.callback = disable_acpi_pci,
|
|
.ident = "Acer TravelMate 36x Laptop",
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"),
|
|
},
|
|
},
|
|
{}
|
|
};
|
|
|
|
/* second table for DMI checks that should run after early-quirks */
|
|
static struct dmi_system_id __initdata acpi_dmi_table_late[] = {
|
|
/*
|
|
* HP laptops which use a DSDT reporting as HP/SB400/10000,
|
|
* which includes some code which overrides all temperature
|
|
* trip points to 16C if the INTIN2 input of the I/O APIC
|
|
* is enabled. This input is incorrectly designated the
|
|
* ISA IRQ 0 via an interrupt source override even though
|
|
* it is wired to the output of the master 8259A and INTIN0
|
|
* is not connected at all. Force ignoring BIOS IRQ0
|
|
* override in that cases.
|
|
*/
|
|
{
|
|
.callback = dmi_ignore_irq0_timer_override,
|
|
.ident = "HP nx6115 laptop",
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6115"),
|
|
},
|
|
},
|
|
{
|
|
.callback = dmi_ignore_irq0_timer_override,
|
|
.ident = "HP NX6125 laptop",
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6125"),
|
|
},
|
|
},
|
|
{
|
|
.callback = dmi_ignore_irq0_timer_override,
|
|
.ident = "HP NX6325 laptop",
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq nx6325"),
|
|
},
|
|
},
|
|
{
|
|
.callback = dmi_ignore_irq0_timer_override,
|
|
.ident = "HP 6715b laptop",
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 6715b"),
|
|
},
|
|
},
|
|
{
|
|
.callback = dmi_ignore_irq0_timer_override,
|
|
.ident = "FUJITSU SIEMENS",
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "AMILO PRO V2030"),
|
|
},
|
|
},
|
|
{}
|
|
};
|
|
|
|
/*
|
|
* acpi_boot_table_init() and acpi_boot_init()
|
|
* called from setup_arch(), always.
|
|
* 1. checksums all tables
|
|
* 2. enumerates lapics
|
|
* 3. enumerates io-apics
|
|
*
|
|
* acpi_table_init() is separate to allow reading SRAT without
|
|
* other side effects.
|
|
*
|
|
* side effects of acpi_boot_init:
|
|
* acpi_lapic = 1 if LAPIC found
|
|
* acpi_ioapic = 1 if IOAPIC found
|
|
* if (acpi_lapic && acpi_ioapic) smp_found_config = 1;
|
|
* if acpi_blacklisted() acpi_disabled = 1;
|
|
* acpi_irq_model=...
|
|
* ...
|
|
*/
|
|
|
|
void __init acpi_boot_table_init(void)
|
|
{
|
|
dmi_check_system(acpi_dmi_table);
|
|
|
|
/*
|
|
* If acpi_disabled, bail out
|
|
*/
|
|
if (acpi_disabled)
|
|
return;
|
|
|
|
/*
|
|
* Initialize the ACPI boot-time table parser.
|
|
*/
|
|
if (acpi_table_init()) {
|
|
disable_acpi();
|
|
return;
|
|
}
|
|
|
|
acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf);
|
|
|
|
/*
|
|
* blacklist may disable ACPI entirely
|
|
*/
|
|
if (acpi_blacklisted()) {
|
|
if (acpi_force) {
|
|
printk(KERN_WARNING PREFIX "acpi=force override\n");
|
|
} else {
|
|
printk(KERN_WARNING PREFIX "Disabling ACPI support\n");
|
|
disable_acpi();
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
int __init early_acpi_boot_init(void)
|
|
{
|
|
/*
|
|
* If acpi_disabled, bail out
|
|
*/
|
|
if (acpi_disabled)
|
|
return 1;
|
|
|
|
/*
|
|
* Process the Multiple APIC Description Table (MADT), if present
|
|
*/
|
|
early_acpi_process_madt();
|
|
|
|
/*
|
|
* Hardware-reduced ACPI mode initialization:
|
|
*/
|
|
// acpi_reduced_hw_init();
|
|
|
|
return 0;
|
|
}
|
|
|
|
int __init acpi_boot_init(void)
|
|
{
|
|
/* those are executed after early-quirks are executed */
|
|
dmi_check_system(acpi_dmi_table_late);
|
|
|
|
/*
|
|
* If acpi_disabled, bail out
|
|
*/
|
|
if (acpi_disabled)
|
|
return 1;
|
|
|
|
// acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf);
|
|
|
|
/*
|
|
* set sci_int and PM timer address
|
|
*/
|
|
acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt);
|
|
|
|
/*
|
|
* Process the Multiple APIC Description Table (MADT), if present
|
|
*/
|
|
acpi_process_madt();
|
|
|
|
acpi_table_parse(ACPI_SIG_HPET, acpi_parse_hpet);
|
|
|
|
// if (!acpi_noirq)
|
|
// x86_init.pci.init = pci_acpi_init;
|
|
|
|
return 0;
|
|
}
|