qemu

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// SPDX-License-Identifier: GPL-2.0+
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/*
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 * Add fw_cfg device in DSDT
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 *
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 */
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#include "qemu/osdep.h"
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#include "hw/nvram/fw_cfg_acpi.h"
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#include "hw/acpi/aml-build.h"
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void fw_cfg_acpi_dsdt_add(Aml *scope, const MemMapEntry *fw_cfg_memmap)
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{
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    Aml *dev = aml_device("FWCF");
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    aml_append(dev, aml_name_decl("_HID", aml_string("QEMU0002")));
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    /* device present, functioning, decoding, not shown in UI */
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    aml_append(dev, aml_name_decl("_STA", aml_int(0xB)));
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    aml_append(dev, aml_name_decl("_CCA", aml_int(1)));
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    Aml *crs = aml_resource_template();
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    aml_append(crs, aml_memory32_fixed(fw_cfg_memmap->base,
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                                       fw_cfg_memmap->size, AML_READ_WRITE));
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    aml_append(dev, aml_name_decl("_CRS", crs));
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    aml_append(scope, dev);
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}
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