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
fw_cfg_acpi_dsdt_add(Aml * scope,const MemMapEntry * fw_cfg_memmap)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