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/* SPDX-License-Identifier: GPL-2.0-only */
#include <acpi/acpi.h>
#include <acpi/acpi_gnvs.h>
#include <acpi/acpigen.h>
#include <string.h>
#include <version.h>
#include "pch.h"
#include "nvs.h"
static void acpi_create_serialio_ssdt_entry(int id, struct global_nvs *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);
struct global_nvs *gnvs = acpi_get_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 = get_acpi_table_revision(SSDT);
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 = asl_revision;
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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