56 lines
1.7 KiB
C
56 lines
1.7 KiB
C
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/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2007-2009 coresystems GmbH
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* Copyright (C) 2012 Chromium OS Authors
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <types.h>
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#include <string.h>
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#include "pch.h"
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void acpi_create_intel_hpet(acpi_hpet_t * hpet)
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{
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acpi_header_t *header = &(hpet->header);
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acpi_addr_t *addr = &(hpet->addr);
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memset((void *) hpet, 0, sizeof(acpi_hpet_t));
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/* fill out header fields */
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memcpy(header->signature, "HPET", 4);
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memcpy(header->oem_id, OEM_ID, 6);
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memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8);
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memcpy(header->asl_compiler_id, ASLC, 4);
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header->length = sizeof(acpi_hpet_t);
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header->revision = 1;
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/* fill out HPET address */
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addr->space_id = 0; /* Memory */
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addr->bit_width = 64;
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addr->bit_offset = 0;
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addr->addrl = (unsigned long long)HPET_ADDR & 0xffffffff;
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addr->addrh = (unsigned long long)HPET_ADDR >> 32;
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hpet->id = 0x8086a201; /* Intel */
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hpet->number = 0x00;
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hpet->min_tick = 0x0080;
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header->checksum =
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acpi_checksum((void *) hpet, sizeof(acpi_hpet_t));
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}
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