/* * boot.c - Architecture-Specific Low-Level ACPI Boot Support * * Copyright (C) 2001, 2002 Paul Diefenbaugh * Copyright (C) 2001 Jun Nakajima * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * 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 #include #include #include #include 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 #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 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, ""), /* 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; }