diff options
Diffstat (limited to 'hw/nvram/fw_cfg-acpi.c')
| -rw-r--r-- | hw/nvram/fw_cfg-acpi.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/hw/nvram/fw_cfg-acpi.c b/hw/nvram/fw_cfg-acpi.c new file mode 100644 index 0000000000..4e48baeaa0 --- /dev/null +++ b/hw/nvram/fw_cfg-acpi.c @@ -0,0 +1,23 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Add fw_cfg device in DSDT + * + */ + +#include "hw/nvram/fw_cfg_acpi.h" +#include "hw/acpi/aml-build.h" + +void fw_cfg_acpi_dsdt_add(Aml *scope, const MemMapEntry *fw_cfg_memmap) +{ + Aml *dev = aml_device("FWCF"); + aml_append(dev, aml_name_decl("_HID", aml_string("QEMU0002"))); + /* device present, functioning, decoding, not shown in UI */ + aml_append(dev, aml_name_decl("_STA", aml_int(0xB))); + aml_append(dev, aml_name_decl("_CCA", aml_int(1))); + + Aml *crs = aml_resource_template(); + aml_append(crs, aml_memory32_fixed(fw_cfg_memmap->base, + fw_cfg_memmap->size, AML_READ_WRITE)); + aml_append(dev, aml_name_decl("_CRS", crs)); + aml_append(scope, dev); +} |