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Member "coreboot-6625/src/mainboard/asus/a8v-e_deluxe/acpi_tables.c" (12 Oct 2010, 4656 Bytes) of package /linux/misc/old/coreboot-6625.tar.gz:


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    1 /*
    2  * This file is part of the coreboot project.
    3  *
    4  * Written by Stefan Reinauer <stepan@openbios.org>.
    5  * ACPI FADT, FACS, and DSDT table support added by
    6  *
    7  * Copyright (C) 2004 Stefan Reinauer <stepan@openbios.org>
    8  * Copyright (C) 2005 Nick Barker <nick.barker9@btinternet.com>
    9  * Copyright (C) 2007 Rudolf Marek <r.marek@assembler.cz>
   10  *
   11  * This program is free software; you can redistribute it and/or modify
   12  * it under the terms of the GNU General Public License as published by
   13  * the Free Software Foundation; version 2 of the License.
   14  *
   15  * This program is distributed in the hope that it will be useful,
   16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
   17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   18  * GNU General Public License for more details.
   19  *
   20  * You should have received a copy of the GNU General Public License
   21  * along with this program; if not, write to the Free Software
   22  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
   23  */
   24 
   25 #include <console/console.h>
   26 #include <string.h>
   27 #include <arch/acpi.h>
   28 #include <arch/smp/mpspec.h>
   29 #include <arch/ioapic.h>
   30 #include <device/device.h>
   31 #include <device/pci_ids.h>
   32 #include "southbridge/via/vt8237r/vt8237r.h"
   33 #include "southbridge/via/k8t890/k8t890.h"
   34 
   35 extern const unsigned char AmlCode[];
   36 
   37 unsigned long acpi_fill_mcfg(unsigned long current)
   38 {
   39     device_t dev;
   40     struct resource *res;
   41 
   42     dev = dev_find_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_K8T890CE_5, 0);
   43     if (!dev)
   44         return current;
   45 
   46     res = find_resource(dev, K8T890_MMCONFIG_MBAR);
   47     if (res) {
   48         current += acpi_create_mcfg_mmconfig((acpi_mcfg_mmconfig_t *)
   49                 current, res->base, 0x0, 0x0, 0xff);
   50     }
   51     return current;
   52 }
   53 
   54 unsigned long acpi_fill_madt(unsigned long current)
   55 {
   56     unsigned int gsi_base = 0x18;
   57 
   58     /* Create all subtables for processors. */
   59     current = acpi_create_madt_lapics(current);
   60 
   61     /* Write SB IOAPIC. */
   62     current += acpi_create_madt_ioapic((acpi_madt_ioapic_t *) current,
   63                 VT8237R_APIC_ID, IO_APIC_ADDR, 0);
   64 
   65     /* Write NB IOAPIC. */
   66     current += acpi_create_madt_ioapic((acpi_madt_ioapic_t *) current,
   67                 K8T890_APIC_ID, K8T890_APIC_BASE, gsi_base);
   68 
   69     /* IRQ9 ACPI active low. */
   70     current += acpi_create_madt_irqoverride((acpi_madt_irqoverride_t *)
   71         current, 0, 9, 9, MP_IRQ_TRIGGER_LEVEL | MP_IRQ_POLARITY_LOW);
   72 
   73     /* IRQ0 -> APIC IRQ2. */
   74     current += acpi_create_madt_irqoverride((acpi_madt_irqoverride_t *)
   75                         current, 0, 0, 2, 0x0);
   76 
   77     /* Create all subtables for processors. */
   78     current = acpi_create_madt_lapic_nmis(current,
   79             MP_IRQ_TRIGGER_EDGE | MP_IRQ_POLARITY_HIGH, 1);
   80 
   81     return current;
   82 }
   83 
   84 unsigned long write_acpi_tables(unsigned long start)
   85 {
   86     unsigned long current;
   87     acpi_rsdp_t *rsdp;
   88     acpi_srat_t *srat;
   89     acpi_rsdt_t *rsdt;
   90     acpi_madt_t *madt;
   91     acpi_mcfg_t *mcfg;
   92     acpi_fadt_t *fadt;
   93     acpi_facs_t *facs;
   94     acpi_header_t *dsdt;
   95 
   96     /* Align ACPI tables to 16 byte. */
   97     start = (start + 0x0f) & -0x10;
   98     current = start;
   99 
  100     printk(BIOS_INFO, "ACPI: Writing ACPI tables at %lx...\n", start);
  101 
  102     /* We need at least an RSDP and an RSDT table. */
  103     rsdp = (acpi_rsdp_t *) current;
  104     current += sizeof(acpi_rsdp_t);
  105     rsdt = (acpi_rsdt_t *) current;
  106     current += sizeof(acpi_rsdt_t);
  107 
  108     /* Clear all table memory. */
  109     memset((void *) start, 0, current - start);
  110 
  111     acpi_write_rsdp(rsdp, rsdt, NULL);
  112     acpi_write_rsdt(rsdt);
  113 
  114     /* We explicitly add these tables later on: */
  115     printk(BIOS_DEBUG, "ACPI:     * FACS\n");
  116     facs = (acpi_facs_t *) current;
  117     current += sizeof(acpi_facs_t);
  118     acpi_create_facs(facs);
  119 
  120     dsdt = (acpi_header_t *)current;
  121     memcpy(dsdt, &AmlCode, sizeof(acpi_header_t));
  122     current += dsdt->length;
  123     memcpy(dsdt, &AmlCode, dsdt->length);
  124     dsdt->checksum = 0; /* Don't trust iasl to get this right. */
  125     dsdt->checksum = acpi_checksum((u8*)dsdt, dsdt->length);
  126     printk(BIOS_DEBUG, "ACPI:     * DSDT @ %p Length %x\n", dsdt,
  127              dsdt->length);
  128     printk(BIOS_DEBUG, "ACPI:     * FADT\n");
  129 
  130     fadt = (acpi_fadt_t *) current;
  131     current += sizeof(acpi_fadt_t);
  132 
  133     acpi_create_fadt(fadt, facs, dsdt);
  134     acpi_add_table(rsdp, fadt);
  135 
  136     /* If we want to use HPET timers Linux wants it in MADT. */
  137     printk(BIOS_DEBUG, "ACPI:    * MADT\n");
  138     madt = (acpi_madt_t *) current;
  139     acpi_create_madt(madt);
  140     current += madt->header.length;
  141     acpi_add_table(rsdp, madt);
  142     printk(BIOS_DEBUG, "ACPI:    * MCFG\n");
  143     mcfg = (acpi_mcfg_t *) current;
  144     acpi_create_mcfg(mcfg);
  145     current += mcfg->header.length;
  146     acpi_add_table(rsdp, mcfg);
  147 
  148     printk(BIOS_DEBUG, "ACPI:    * SRAT\n");
  149     srat = (acpi_srat_t *) current;
  150     acpi_create_srat(srat);
  151     current += srat->header.length;
  152     acpi_add_table(rsdp, srat);
  153 
  154     printk(BIOS_INFO, "ACPI: done.\n");
  155     return current;
  156 }