/* * This file is part of the coreboot project. * * Copyright (C) 2007-2008 coresystems GmbH * Copyright (C) 2009 Thomas Jourdan * * 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; version 2 of * the License. * * 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., 51 Franklin St, Fifth Floor, Boston, * MA 02110-1301 USA */ #include #include #include #include #include #include #include "ioapic.h" extern const unsigned char AmlCode[]; unsigned long acpi_fill_mcfg(unsigned long current) { device_t dev; u64 mmcfg; dev = dev_find_device(0x8086, 0x35B0, 0); // 0:0x13.0 if (!dev) return current; // MMCFG not supported or not enabled. mmcfg = ((u64) pci_read_config16(dev, 0xce)) << 16; if (!mmcfg) return current; current += acpi_create_mcfg_mmconfig((acpi_mcfg_mmconfig_t *) current, mmcfg, 0x0, 0x0, 0xff); return current; } static void acpi_create_intel_hpet(acpi_hpet_t * hpet) { #define HPET_ADDR 0xfed00000ULL acpi_header_t *header = &(hpet->header); acpi_addr_t *addr = &(hpet->addr); memset((void *) hpet, 0, sizeof(acpi_hpet_t)); /* fill out header fields */ memcpy(header->signature, "HPET", 4); memcpy(header->oem_id, OEM_ID, 6); memcpy(header->oem_table_id, "IC ", 8); memcpy(header->asl_compiler_id, ASLC, 4); header->length = sizeof(acpi_hpet_t); header->revision = 1; /* fill out HPET address */ // XXX factory bios just puts an address here -- who's right? addr->space_id = 0; /* Memory */ addr->bit_width = 64; addr->bit_offset = 0; addr->addrl = HPET_ADDR & 0xffffffff; addr->addrh = HPET_ADDR >> 32; hpet->id = 0x80861234; hpet->number = 0x00; hpet->min_tick = 0x0090; header->checksum = acpi_checksum((void *) hpet, sizeof(acpi_hpet_t)); } #define IO_APIC0 2 #define IO_APIC1 3 #define IO_APIC0_ADDR 0xfec00000UL #define IO_APIC1_ADDR 0xfec10000UL unsigned long acpi_fill_madt(unsigned long current) { unsigned int irq_start = 0; device_t dev = 0; unsigned char bus_isa; /* Local Apic */ current += acpi_create_madt_lapic((acpi_madt_lapic_t *) current, 1, 0); // This one is for the second core... Will it hurt? current += acpi_create_madt_lapic((acpi_madt_lapic_t *) current, 2, 1); /* IOAPIC */ current += acpi_create_madt_ioapic((acpi_madt_ioapic_t *) current, IO_APIC0, IO_APIC0_ADDR, irq_start); irq_start += INTEL_IOAPIC_NUM_INTERRUPTS; current += acpi_create_madt_ioapic((acpi_madt_ioapic_t *) current, IO_APIC1, IO_APIC1_ADDR, irq_start); irq_start += INTEL_IOAPIC_NUM_INTERRUPTS; dev = dev_find_slot(0, PCI_DEVFN(0x1e,0)); if (dev) { bus_isa = pci_read_config8(dev, PCI_SUBORDINATE_BUS); bus_isa++; } else { printk(BIOS_DEBUG, "ERROR - could not find PCI 0:1e.0, using defaults\n"); bus_isa = 7; } /* Map ISA IRQ 0 to IRQ 2 */ current += acpi_create_madt_irqoverride((acpi_madt_irqoverride_t *) current, bus_isa, 0, 2, 0); /* IRQ9 differs from ISA standard - ours is active high, level-triggered */ current += acpi_create_madt_irqoverride((acpi_madt_irqoverride_t *) current, 0, 9, 9, 0x000d); return current; } unsigned long acpi_fill_slit(unsigned long current) { // Not implemented return current; } unsigned long acpi_fill_srat(unsigned long current) { /* No NUMA, no SRAT */ return current; } #define ALIGN_CURRENT current = ((current + 0x0f) & -0x10) unsigned long write_acpi_tables(unsigned long start) { unsigned long current; acpi_rsdp_t *rsdp; acpi_rsdt_t *rsdt; acpi_hpet_t *hpet; acpi_madt_t *madt; acpi_mcfg_t *mcfg; acpi_fadt_t *fadt; acpi_facs_t *facs; acpi_header_t *dsdt; current = start; /* Align ACPI tables to 16byte */ ALIGN_CURRENT; printk(BIOS_INFO, "ACPI: Writing ACPI tables at %lx.\n", current); /* We need at least an RSDP and an RSDT Table */ rsdp = (acpi_rsdp_t *) current; current += sizeof(acpi_rsdp_t); ALIGN_CURRENT; rsdt = (acpi_rsdt_t *) current; current += sizeof(acpi_rsdt_t); ALIGN_CURRENT; /* clear all table memory */ memset((void *) start, 0, current - start); acpi_write_rsdp(rsdp, rsdt, NULL); acpi_write_rsdt(rsdt); /* * We explicitly add these tables later on: */ printk(BIOS_DEBUG, "ACPI: * HPET\n"); hpet = (acpi_hpet_t *) current; current += sizeof(acpi_hpet_t); ALIGN_CURRENT; acpi_create_intel_hpet(hpet); acpi_add_table(rsdp, hpet); /* If we want to use HPET Timers Linux wants an MADT */ printk(BIOS_DEBUG, "ACPI: * MADT\n"); madt = (acpi_madt_t *) current; acpi_create_madt(madt); current += madt->header.length; ALIGN_CURRENT; acpi_add_table(rsdp, madt); printk(BIOS_DEBUG, "ACPI: * MCFG\n"); mcfg = (acpi_mcfg_t *) current; acpi_create_mcfg(mcfg); current += mcfg->header.length; ALIGN_CURRENT; acpi_add_table(rsdp, mcfg); printk(BIOS_DEBUG, "ACPI: * FACS\n"); facs = (acpi_facs_t *) current; current += sizeof(acpi_facs_t); ALIGN_CURRENT; acpi_create_facs(facs); dsdt = (acpi_header_t *) current; memcpy(dsdt, &AmlCode, sizeof(acpi_header_t)); current += dsdt->length; memcpy(dsdt, &AmlCode, dsdt->length); ALIGN_CURRENT; printk(BIOS_DEBUG, "ACPI: * DSDT @ %p Length %x\n", dsdt, dsdt->length); printk(BIOS_DEBUG, "ACPI: * FADT\n"); fadt = (acpi_fadt_t *) current; current += sizeof(acpi_fadt_t); ALIGN_CURRENT; acpi_create_fadt(fadt, facs, dsdt); acpi_add_table(rsdp, fadt); printk(BIOS_INFO, "ACPI: done.\n"); return current; }