1 // SPDX-License-Identifier: GPL-2.0+ 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 } 25