| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2007-2009 coresystems GmbH |
| * Copyright (C) 2012 Chromium OS Authors |
| * |
| * 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 <arch/acpi.h> |
| #include <arch/acpigen.h> |
| #include <cbmem.h> |
| #include <types.h> |
| #include <string.h> |
| #include "pch.h" |
| #include "nvs.h" |
| |
| void acpi_create_intel_hpet(acpi_hpet_t * hpet) |
| { |
| 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 */ |
| addr->space_id = 0; /* Memory */ |
| addr->bit_width = 64; |
| addr->bit_offset = 0; |
| addr->addrl = (unsigned long long)HPET_ADDR & 0xffffffff; |
| addr->addrh = (unsigned long long)HPET_ADDR >> 32; |
| |
| hpet->id = 0x8086a201; /* Intel */ |
| hpet->number = 0x00; |
| hpet->min_tick = 0x0080; |
| |
| header->checksum = |
| acpi_checksum((void *) hpet, sizeof(acpi_hpet_t)); |
| } |
| |
| static int acpi_create_serialio_ssdt_entry(int id, global_nvs_t *gnvs) |
| { |
| char sio_name[5] = {}; |
| sprintf(sio_name, "S%1uEN", id); |
| return acpigen_write_name_byte(sio_name, gnvs->s0b[id] ? 1 : 0); |
| } |
| |
| void acpi_create_serialio_ssdt(acpi_header_t *ssdt) |
| { |
| unsigned long current = (unsigned long)ssdt + sizeof(acpi_header_t); |
| global_nvs_t *gnvs = cbmem_find(CBMEM_ID_ACPI_GNVS); |
| int id, len = 0; |
| |
| if (!gnvs) |
| return; |
| |
| /* Fill the SSDT header */ |
| memset((void *)ssdt, 0, sizeof(acpi_header_t)); |
| memcpy(&ssdt->signature, "SSDT", 4); |
| ssdt->revision = 2; |
| memcpy(&ssdt->oem_id, OEM_ID, 6); |
| memcpy(&ssdt->oem_table_id, ACPI_TABLE_CREATOR, 8); |
| ssdt->oem_revision = 42; |
| memcpy(&ssdt->asl_compiler_id, ASLC, 4); |
| ssdt->asl_compiler_revision = 42; |
| ssdt->length = sizeof(acpi_header_t); |
| acpigen_set_current((char *) current); |
| |
| /* Fill the SSDT with an entry for each SerialIO device */ |
| for (id = 0; id < 8; id++) |
| len += acpi_create_serialio_ssdt_entry(id, gnvs); |
| |
| /* (Re)calculate length and checksum. */ |
| current = (unsigned long)acpigen_get_current(); |
| ssdt->length = current - (unsigned long)ssdt; |
| ssdt->checksum = acpi_checksum((void *)ssdt, ssdt->length); |
| } |