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/*
* 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.
*/
#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 void acpi_create_serialio_ssdt_entry(int id, global_nvs_t *gnvs)
{
char sio_name[5] = {};
snprintf(sio_name, sizeof (sio_name), "S%1uEN", id);
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;
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, "SERIALIO", 8);
ssdt->oem_revision = 43;
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++)
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);
}
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