/* * This file is part of the coreboot project. * * Copyright (C) 2007-2009 coresystems GmbH * * 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 <string.h> #include <console/console.h> #include <arch/acpi.h> #include <arch/ioapic.h> #include <device/device.h> #include <device/pci.h> #include <device/pci_ids.h> extern const unsigned char AmlCode[]; unsigned long acpi_fill_mcfg(unsigned long current) { device_t dev; u64 mmcfg; dev = dev_find_device(0x1106, 0x324b, 0); // 0:0x13.0 if (!dev) return current; // MMCFG not supported or not enabled. if ((pci_read_config8(dev, 0x40) & 0xC0) != 0xC0) return current; mmcfg = ((u64) pci_read_config8(dev, 0x41)) << 28; if (!mmcfg) return current; current += acpi_create_mcfg_mmconfig((acpi_mcfg_mmconfig_t *) current, mmcfg, 0x0, 0x0, 0xff); return current; } unsigned long acpi_fill_madt(unsigned long current) { /* Local Apic */ current += acpi_create_madt_lapic((acpi_madt_lapic_t *) current, 0, 0); /* IOAPIC */ current += acpi_create_madt_ioapic((acpi_madt_ioapic_t *) current, 2, IO_APIC_ADDR, 0); /* INT_SRC_OVR */ current += acpi_create_madt_irqoverride((acpi_madt_irqoverride_t *) current, 0, 0, 2, 0); current += acpi_create_madt_irqoverride((acpi_madt_irqoverride_t *) current, 0, 9, 9, 0x000f); // low/level /* LAPIC_NMI */ current += acpi_create_madt_lapic_nmi((acpi_madt_lapic_nmi_t *) current, 0, 0x0005, 1); // high/edge 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; } 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; /* Align ACPI tables to 16byte */ start = ALIGN(start, 16); current = start; printk(BIOS_INFO, "ACPI: Writing ACPI tables at %lx.\n", start); /* We need at least an RSDP and an RSDT Table */ rsdp = (acpi_rsdp_t *) current; current += sizeof(acpi_rsdp_t); rsdt = (acpi_rsdt_t *) current; current += sizeof(acpi_rsdt_t); /* 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); acpi_create_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; acpi_add_table(rsdp, madt); printk(BIOS_DEBUG, "ACPI: * MCFG\n"); mcfg = (acpi_mcfg_t *) current; acpi_create_mcfg(mcfg); current += mcfg->header.length; acpi_add_table(rsdp, mcfg); printk(BIOS_DEBUG, "ACPI: * FACS\n"); facs = (acpi_facs_t *) current; current += sizeof(acpi_facs_t); acpi_create_facs(facs); dsdt = (acpi_header_t *) current; dsdt = (acpi_header_t *)current; memcpy(dsdt, &AmlCode, sizeof(acpi_header_t)); current += dsdt->length; memcpy(dsdt, &AmlCode, dsdt->length); #ifdef DONT_TRUST_IASL dsdt->checksum = 0; // don't trust intel iasl compiler to get this right dsdt->checksum = acpi_checksum(dsdt, dsdt->length); #endif 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); acpi_create_fadt(fadt, facs, dsdt); acpi_add_table(rsdp, fadt); printk(BIOS_INFO, "ACPI: done.\n"); return current; }