| 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
| 2 | /* |
| 3 | * Add fw_cfg device in DSDT |
| 4 | * |
| 5 | */ |
| 6 | |
| 7 | #include "qemu/osdep.h" |
| 8 | #include "hw/nvram/fw_cfg_acpi.h" |
| 9 | #include "hw/acpi/aml-build.h" |
| 10 | |
| 11 | void fw_cfg_acpi_dsdt_add(Aml *scope, const MemMapEntry *fw_cfg_memmap) |
| 12 | { |
| 13 | Aml *dev = aml_device("FWCF"); |
| 14 | aml_append(dev, aml_name_decl("_HID", aml_string("QEMU0002"))); |
| 15 | /* device present, functioning, decoding, not shown in UI */ |
| 16 | aml_append(dev, aml_name_decl("_STA", aml_int(0xB))); |
| 17 | aml_append(dev, aml_name_decl("_CCA", aml_int(1))); |
| 18 | |
| 19 | Aml *crs = aml_resource_template(); |
| 20 | aml_append(crs, aml_memory32_fixed(fw_cfg_memmap->base, |
| 21 | fw_cfg_memmap->size, AML_READ_WRITE)); |
| 22 | aml_append(dev, aml_name_decl("_CRS", crs)); |
| 23 | aml_append(scope, dev); |
| 24 | } |