diff options
Diffstat (limited to 'src/southbridge/intel/i82371eb/acpi_tables.c')
| -rw-r--r-- | src/southbridge/intel/i82371eb/acpi_tables.c | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/src/southbridge/intel/i82371eb/acpi_tables.c b/src/southbridge/intel/i82371eb/acpi_tables.c new file mode 100644 index 0000000000..2b536e6f18 --- /dev/null +++ b/src/southbridge/intel/i82371eb/acpi_tables.c @@ -0,0 +1,137 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2004 Stefan Reinauer <stepan@openbios.org> + * Copyright (C) 2005 Nick Barker <nick.barker9@btinternet.com> + * Copyright (C) 2007 Rudolf Marek <r.marek@assembler.cz> + * + * 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 <console/console.h> +#include <string.h> +#include <arch/acpi.h> +#include <arch/acpigen.h> +#include <arch/smp/mpspec.h> +#include <device/device.h> +#include <device/pci_ids.h> + +extern const unsigned char AmlCode[]; + +unsigned long __attribute__((weak)) acpi_fill_slit(unsigned long current) +{ + // Not implemented + return current; +} + +unsigned long __attribute__((weak)) acpi_fill_srat(unsigned long current) +{ + // Not implemented + return current; +} + +unsigned long __attribute__((weak)) acpi_fill_madt(unsigned long current) +{ + /* mainboard has no ioapic */ + return current; +} + +unsigned long __attribute__((weak)) acpi_fill_mcfg(unsigned long current) +{ + /* chipset doesn't have mmconfig */ + return current; +} + +unsigned long __attribute__((weak)) acpi_fill_ssdt_generator(unsigned long current, + const char *oem_table_id) +{ + acpigen_write_mainboard_resources("\\_SB.PCI0.MBRS", "_CRS"); + return (unsigned long) acpigen_get_current(); +} + +unsigned long __attribute__((weak)) write_acpi_tables(unsigned long start) +{ + unsigned long current; + acpi_rsdp_t *rsdp; + acpi_rsdt_t *rsdt; + acpi_fadt_t *fadt; + acpi_facs_t *facs; + acpi_madt_t *madt; + acpi_header_t *ssdt; + acpi_header_t *dsdt; + + /* Align ACPI tables to 16 byte. */ + start = (start + 0x0f) & -0x10; + 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: * FACS\n"); + + /* we should align FACS to 64B as per ACPI specs */ + current = ALIGN(current, 64); + facs = (acpi_facs_t *) current; + current += sizeof(acpi_facs_t); + acpi_create_facs(facs); + + dsdt = (acpi_header_t *)current; + memcpy(dsdt, &AmlCode, sizeof(acpi_header_t)); + current += dsdt->length; + memcpy(dsdt, &AmlCode, dsdt->length); + /* Don't trust iasl to get checksum right. */ + dsdt->checksum = 0; /* needs to be set to 0 first (part of csum) */ + dsdt->checksum = acpi_checksum((u8*)dsdt, dsdt->length); + 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_DEBUG, "ACPI: * MADT\n"); + madt = (acpi_madt_t *) current; + acpi_create_madt(madt); + if (madt->header.length > sizeof(acpi_madt_t)) { + current += madt->header.length; + acpi_add_table(rsdp, madt); + } else { + /* don't add empty madt */ + current = (unsigned long)madt; + } + + printk(BIOS_DEBUG, "ACPI: * SSDT\n"); + ssdt = (acpi_header_t *)current; + acpi_create_ssdt_generator(ssdt, "DYNADATA"); + current += ssdt->length; + acpi_add_table(rsdp, ssdt); + + printk(BIOS_INFO, "ACPI: done.\n"); + return current; +} |