diff options
Diffstat (limited to 'src/mainboard/via/vt8454c/acpi_tables.c')
| -rw-r--r-- | src/mainboard/via/vt8454c/acpi_tables.c | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/src/mainboard/via/vt8454c/acpi_tables.c b/src/mainboard/via/vt8454c/acpi_tables.c new file mode 100644 index 0000000000..edf8d7e207 --- /dev/null +++ b/src/mainboard/via/vt8454c/acpi_tables.c @@ -0,0 +1,205 @@ +/* + * 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 <device/device.h> +#include <device/pci.h> +#include <device/pci_ids.h> +#include "dmi.h" + +extern 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; +} + + +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_NAME, 4); + memcpy(header->oem_id, OEM_ID, 6); + memcpy(header->oem_table_id, "COREBOOT", 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)); +} + + + +#define IO_APIC_ADDR 0xfec00000UL + +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 = (start + 0x0f) & -0x10; + current = start; + + printk_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); + acpi_write_rsdt(rsdt); + + /* + * We explicitly add these tables later on: + */ + + printk_debug("ACPI: * HPET\n"); + + hpet = (acpi_hpet_t *) current; + current += sizeof(acpi_hpet_t); + acpi_create_via_hpet(hpet); + acpi_add_table(rsdt, hpet); + + /* If we want to use HPET Timers Linux wants an MADT */ + printk_debug("ACPI: * MADT\n"); + + madt = (acpi_madt_t *) current; + acpi_create_madt(madt); + current += madt->header.length; + acpi_add_table(rsdt, madt); + + printk_debug("ACPI: * MCFG\n"); + mcfg = (acpi_mcfg_t *) current; + acpi_create_mcfg(mcfg); + current += mcfg->header.length; + acpi_add_table(rsdt, mcfg); + + printk_debug("ACPI: * FACS\n"); + facs = (acpi_facs_t *) current; + current += sizeof(acpi_facs_t); + acpi_create_facs(facs); + + dsdt = (acpi_header_t *) current; + current += ((acpi_header_t *) AmlCode)->length; + memcpy((void *) dsdt, (void *) AmlCode, + ((acpi_header_t *) AmlCode)->length); +#if 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_debug("ACPI: * DSDT @ %08x Length %x\n", dsdt, + dsdt->length); + printk_debug("ACPI: * FADT\n"); + + fadt = (acpi_fadt_t *) current; + current += sizeof(acpi_fadt_t); + + acpi_create_fadt(fadt, facs, dsdt); + acpi_add_table(rsdt, fadt); + + printk_debug("ACPI: * DMI (Linux workaround)\n"); + memcpy((void *)0xfff80, dmi_table, DMI_TABLE_SIZE); + + printk_info("ACPI: done.\n"); + return current; +} |