LXR coreboot/src/mainboard/intel/eagleheights/acpi

   1/*
   2 * This file is part of the coreboot project.
   3 *
   4 * Copyright (C) 2007-2008 coresystems GmbH
   5 * Copyright (C) 2009 Thomas Jourdan <thomas.jourdan@gmail.com>
   6 *
   7 * This program is free software; you can redistribute it and/or
   8 * modify it under the terms of the GNU General Public License as
   9 * published by the Free Software Foundation; version 2 of
  10 * the License.
  11 *
  12 * This program is distributed in the hope that it will be useful,
  13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 * GNU General Public License for more details.
  16 *
  17 * You should have received a copy of the GNU General Public License
  18 * along with this program; if not, write to the Free Software
  19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
  20 * MA 02110-1301 USA
  21 */
  22
  23#include <string.h>
  24#include <console/console.h>
  25#include <arch/acpi.h>
  26#include <arch/ioapic.h>
  27#include <device/device.h>
  28#include <device/pci.h>
  29#include <device/pci_ids.h>
  30#include "ioapic.h"
  31
  32extern const unsigned char AmlCode[];
  33
  34unsigned long acpi_fill_mcfg(unsigned long current)
  35{
  36        device_t dev;
  37        u64 mmcfg;
  38
  39        dev = dev_find_device(0x8086, 0x35B0, 0);       // 0:0x13.0
  40        if (!dev)
  41                return current;
  42
  43        // MMCFG not supported or not enabled.
  44        mmcfg = ((u64) pci_read_config16(dev, 0xce)) << 16;
  45        if (!mmcfg)
  46                return current;
  47
  48        current += acpi_create_mcfg_mmconfig((acpi_mcfg_mmconfig_t *) current,
  49                        mmcfg, 0x0, 0x0, 0xff);
  50
  51        return current;
  52}
  53
  54static void acpi_create_intel_hpet(acpi_hpet_t * hpet)
  55{
  56#define HPET_ADDR  0xfed00000ULL
  57        acpi_header_t *header = &(hpet->header);
  58        acpi_addr_t *addr = &(hpet->addr);
  59
  60        memset((void *) hpet, 0, sizeof(acpi_hpet_t));
  61
  62        /* fill out header fields */
  63        memcpy(header->signature, "HPET", 4);
  64        memcpy(header->oem_id, OEM_ID, 6);
  65        memcpy(header->oem_table_id, "IC      ", 8);
  66        memcpy(header->asl_compiler_id, ASLC, 4);
  67
  68        header->length = sizeof(acpi_hpet_t);
  69        header->revision = 1;
  70
  71        /* fill out HPET address */
  72        // XXX factory bios just puts an address here -- who's right?
  73        addr->space_id = 0;     /* Memory */
  74        addr->bit_width = 64;
  75        addr->bit_offset = 0;
  76        addr->addrl = HPET_ADDR & 0xffffffff;
  77        addr->addrh = HPET_ADDR >> 32;
  78
  79        hpet->id = 0x80861234;
  80        hpet->number = 0x00;
  81        hpet->min_tick = 0x0090;
  82
  83        header->checksum = acpi_checksum((void *) hpet, sizeof(acpi_hpet_t));
  84}
  85
  86#define IO_APIC0 2
  87#define IO_APIC1 3
  88
  89unsigned long acpi_fill_madt(unsigned long current)
  90{
  91        unsigned int irq_start = 0;
  92        device_t dev = 0;
  93        unsigned char bus_isa;
  94
  95        /* Local Apic */
  96        current += acpi_create_madt_lapic((acpi_madt_lapic_t *) current, 1, 0);
  97        // This one is for the second core... Will it hurt?
  98        current += acpi_create_madt_lapic((acpi_madt_lapic_t *) current, 2, 1);
  99
 100        /* IOAPIC */
 101        current += acpi_create_madt_ioapic((acpi_madt_ioapic_t *) current, IO_APIC0, IO_APIC_ADDR, irq_start);
 102        irq_start += INTEL_IOAPIC_NUM_INTERRUPTS;
 103        current += acpi_create_madt_ioapic((acpi_madt_ioapic_t *) current, IO_APIC1, IO_APIC_ADDR + 0x10000, irq_start);
 104        irq_start += INTEL_IOAPIC_NUM_INTERRUPTS;
 105
 106        dev = dev_find_slot(0, PCI_DEVFN(0x1e,0));
 107
 108        if (dev) {
 109                bus_isa = pci_read_config8(dev, PCI_SUBORDINATE_BUS);
 110                bus_isa++;
 111        } else {
 112                printk(BIOS_DEBUG, "ERROR - could not find PCI 0:1e.0, using defaults\n");
 113                bus_isa = 7;
 114        }
 115
 116        /* Map ISA IRQ 0 to IRQ 2 */
 117        current += acpi_create_madt_irqoverride((acpi_madt_irqoverride_t *) current, bus_isa, 0, 2, 0);
 118
 119        /* IRQ9 differs from ISA standard - ours is active high, level-triggered */
 120        current += acpi_create_madt_irqoverride((acpi_madt_irqoverride_t *) current, 0, 9, 9, 0x000d);
 121
 122        return current;
 123}
 124
 125unsigned long acpi_fill_slit(unsigned long current)
 126{
 127        // Not implemented
 128        return current;
 129}
 130
 131unsigned long acpi_fill_srat(unsigned long current)
 132{
 133        /* No NUMA, no SRAT */
 134        return current;
 135}
 136
 137
 138#define ALIGN_CURRENT current = ((current + 0x0f) & -0x10)
 139unsigned long write_acpi_tables(unsigned long start)
 140{
 141        unsigned long current;
 142        acpi_rsdp_t *rsdp;
 143        acpi_rsdt_t *rsdt;
 144        acpi_hpet_t *hpet;
 145        acpi_madt_t *madt;
 146        acpi_mcfg_t *mcfg;
 147        acpi_fadt_t *fadt;
 148        acpi_facs_t *facs;
 149        acpi_header_t *dsdt;
 150
 151        current = start;
 152
 153        /* Align ACPI tables to 16byte */
 154        ALIGN_CURRENT;
 155
 156        printk(BIOS_INFO, "ACPI: Writing ACPI tables at %lx.\n", current);
 157
 158        /* We need at least an RSDP and an RSDT Table */
 159        rsdp = (acpi_rsdp_t *) current;
 160        current += sizeof(acpi_rsdp_t);
 161        ALIGN_CURRENT;
 162        rsdt = (acpi_rsdt_t *) current;
 163        current += sizeof(acpi_rsdt_t);
 164        ALIGN_CURRENT;
 165
 166        /* clear all table memory */
 167        memset((void *) start, 0, current - start);
 168
 169        acpi_write_rsdp(rsdp, rsdt, NULL);
 170        acpi_write_rsdt(rsdt);
 171
 172        /*
 173         * We explicitly add these tables later on:
 174         */
 175        printk(BIOS_DEBUG, "ACPI:    * HPET\n");
 176
 177        hpet = (acpi_hpet_t *) current;
 178        current += sizeof(acpi_hpet_t);
 179        ALIGN_CURRENT;
 180        acpi_create_intel_hpet(hpet);
 181        acpi_add_table(rsdp, hpet);
 182
 183        /* If we want to use HPET Timers Linux wants an MADT */
 184        printk(BIOS_DEBUG, "ACPI:    * MADT\n");
 185
 186        madt = (acpi_madt_t *) current;
 187        acpi_create_madt(madt);
 188        current += madt->header.length;
 189        ALIGN_CURRENT;
 190        acpi_add_table(rsdp, madt);
 191
 192        printk(BIOS_DEBUG, "ACPI:    * MCFG\n");
 193        mcfg = (acpi_mcfg_t *) current;
 194        acpi_create_mcfg(mcfg);
 195        current += mcfg->header.length;
 196        ALIGN_CURRENT;
 197        acpi_add_table(rsdp, mcfg);
 198
 199        printk(BIOS_DEBUG, "ACPI:     * FACS\n");
 200        facs = (acpi_facs_t *) current;
 201        current += sizeof(acpi_facs_t);
 202        ALIGN_CURRENT;
 203        acpi_create_facs(facs);
 204
 205        dsdt = (acpi_header_t *) current;
 206        memcpy(dsdt, &AmlCode, sizeof(acpi_header_t));
 207        current += dsdt->length;
 208        memcpy(dsdt, &AmlCode, dsdt->length);
 209        ALIGN_CURRENT;
 210
 211        printk(BIOS_DEBUG, "ACPI:     * DSDT @ %p Length %x\n", dsdt,
 212                     dsdt->length);
 213
 214        printk(BIOS_DEBUG, "ACPI:     * FADT\n");
 215        fadt = (acpi_fadt_t *) current;
 216        current += sizeof(acpi_fadt_t);
 217        ALIGN_CURRENT;
 218
 219        acpi_create_fadt(fadt, facs, dsdt);
 220        acpi_add_table(rsdp, fadt);
 221
 222        printk(BIOS_INFO, "ACPI: done.\n");
 223        return current;
 224}
 225