diff options
Diffstat (limited to 'src/southbridge/intel/lynxpoint/acpi.c')
| -rw-r--r-- | src/southbridge/intel/lynxpoint/acpi.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/src/southbridge/intel/lynxpoint/acpi.c b/src/southbridge/intel/lynxpoint/acpi.c new file mode 100644 index 0000000000..4118b9df6d --- /dev/null +++ b/src/southbridge/intel/lynxpoint/acpi.c @@ -0,0 +1,55 @@ +/* + * 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 <types.h> +#include <string.h> +#include "pch.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)); +} + |