| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <acpi/acpi.h> |
| #include <acpi/acpi_gnvs.h> |
| #include <acpi/acpigen.h> |
| #include <stdio.h> |
| #include <string.h> |
| #include <version.h> |
| #include <soc/nvs.h> |
| |
| #include "pch.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); |
| } |