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/*
* 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;
}
static void acpi_create_via_hpet(acpi_hpet_t * hpet)
{
#define HPET_ADDR 0xfe800000ULL
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, ACPI_TABLE_CREATOR, 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 = 0x11068201; /* VIA */
hpet->number = 0x00;
hpet->min_tick = 0x0090;
header->checksum =
acpi_checksum((void *) hpet, sizeof(acpi_hpet_t));
}
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_via_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;
}
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