f1a787b5f4
Documentation suggests @foo is merely shorthand for ``foo``. It's not, it carries additional meaning: it's a reference to a QAPI schema name. Reword the documentation to spell that out. Fix up the few ``foo`` that should be @foo. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20230425064223.820979-7-armbru@redhat.com>
643 lines
23 KiB
Python
643 lines
23 KiB
Python
# -*- Mode: Python -*-
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# vim: filetype=python
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#
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# Copyright (C) 2018 Red Hat, Inc.
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#
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# Authors:
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# Daniel P. Berrange <berrange@redhat.com>
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# Laszlo Ersek <lersek@redhat.com>
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#
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# This work is licensed under the terms of the GNU GPL, version 2 or
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# later. See the COPYING file in the top-level directory.
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##
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# = Firmware
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##
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{ 'include' : 'machine.json' }
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{ 'include' : 'block-core.json' }
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##
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# @FirmwareOSInterface:
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#
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# Lists the firmware-OS interface types provided by various firmware
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# that is commonly used with QEMU virtual machines.
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#
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# @bios: Traditional x86 BIOS interface. For example, firmware built
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# from the SeaBIOS project usually provides this interface.
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#
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# @openfirmware: The interface is defined by the (historical) IEEE
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# 1275-1994 standard. Examples for firmware projects that
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# provide this interface are: OpenBIOS and SLOF.
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#
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# @uboot: Firmware interface defined by the U-Boot project.
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#
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# @uefi: Firmware interface defined by the UEFI specification. For
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# example, firmware built from the edk2 (EFI Development Kit II)
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# project usually provides this interface.
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#
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# Since: 3.0
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##
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{ 'enum' : 'FirmwareOSInterface',
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'data' : [ 'bios', 'openfirmware', 'uboot', 'uefi' ] }
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##
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# @FirmwareDevice:
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#
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# Defines the device types that firmware can be mapped into.
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#
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# @flash: The firmware executable and its accompanying NVRAM file are to
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# be mapped into a pflash chip each.
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#
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# @kernel: The firmware is to be loaded like a Linux kernel. This is
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# similar to @memory but may imply additional processing that
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# is specific to the target architecture and machine type.
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#
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# @memory: The firmware is to be mapped into memory.
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#
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# Since: 3.0
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##
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{ 'enum' : 'FirmwareDevice',
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'data' : [ 'flash', 'kernel', 'memory' ] }
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##
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# @FirmwareTarget:
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#
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# Defines the machine types that firmware may execute on.
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#
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# @architecture: Determines the emulation target (the QEMU system
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# emulator) that can execute the firmware.
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#
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# @machines: Lists the machine types (known by the emulator that is
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# specified through @architecture) that can execute the
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# firmware. Elements of @machines are supposed to be concrete
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# machine types, not aliases. Glob patterns are understood,
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# which is especially useful for versioned machine types.
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# (For example, the glob pattern "pc-i440fx-*" matches
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# "pc-i440fx-2.12".) On the QEMU command line, "-machine
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# type=..." specifies the requested machine type (but that
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# option does not accept glob patterns).
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#
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# Since: 3.0
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##
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{ 'struct' : 'FirmwareTarget',
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'data' : { 'architecture' : 'SysEmuTarget',
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'machines' : [ 'str' ] } }
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##
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# @FirmwareFeature:
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#
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# Defines the features that firmware may support, and the platform
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# requirements that firmware may present.
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#
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# @acpi-s3: The firmware supports S3 sleep (suspend to RAM), as defined
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# in the ACPI specification. On the "pc-i440fx-*" machine
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# types of the @i386 and @x86_64 emulation targets, S3 can be
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# enabled with "-global PIIX4_PM.disable_s3=0" and disabled
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# with "-global PIIX4_PM.disable_s3=1". On the "pc-q35-*"
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# machine types of the @i386 and @x86_64 emulation targets, S3
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# can be enabled with "-global ICH9-LPC.disable_s3=0" and
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# disabled with "-global ICH9-LPC.disable_s3=1".
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#
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# @acpi-s4: The firmware supports S4 hibernation (suspend to disk), as
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# defined in the ACPI specification. On the "pc-i440fx-*"
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# machine types of the @i386 and @x86_64 emulation targets, S4
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# can be enabled with "-global PIIX4_PM.disable_s4=0" and
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# disabled with "-global PIIX4_PM.disable_s4=1". On the
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# "pc-q35-*" machine types of the @i386 and @x86_64 emulation
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# targets, S4 can be enabled with "-global
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# ICH9-LPC.disable_s4=0" and disabled with "-global
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# ICH9-LPC.disable_s4=1".
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#
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# @amd-sev: The firmware supports running under AMD Secure Encrypted
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# Virtualization, as specified in the AMD64 Architecture
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# Programmer's Manual. QEMU command line options related to
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# this feature are documented in
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# "docs/system/i386/amd-memory-encryption.rst".
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#
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# @amd-sev-es: The firmware supports running under AMD Secure Encrypted
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# Virtualization - Encrypted State, as specified in the AMD64
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# Architecture Programmer's Manual. QEMU command line options
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# related to this feature are documented in
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# "docs/system/i386/amd-memory-encryption.rst".
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#
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# @amd-sev-snp: The firmware supports running under AMD Secure Encrypted
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# Virtualization - Secure Nested Paging, as specified in the
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# AMD64 Architecture Programmer's Manual. QEMU command line
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# options related to this feature are documented in
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# "docs/system/i386/amd-memory-encryption.rst".
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#
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# @intel-tdx: The firmware supports running under Intel Trust Domain
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# Extensions (TDX).
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#
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# @enrolled-keys: The variable store (NVRAM) template associated with
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# the firmware binary has the UEFI Secure Boot
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# operational mode turned on, with certificates
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# enrolled.
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#
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# @requires-smm: The firmware requires the platform to emulate SMM
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# (System Management Mode), as defined in the AMD64
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# Architecture Programmer's Manual, and in the Intel(R)64
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# and IA-32 Architectures Software Developer's Manual. On
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# the "pc-q35-*" machine types of the @i386 and @x86_64
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# emulation targets, SMM emulation can be enabled with
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# "-machine smm=on". (On the "pc-q35-*" machine types of
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# the @i386 emulation target, @requires-smm presents
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# further CPU requirements; one combination known to work
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# is "-cpu coreduo,nx=off".) If the firmware is marked as
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# both @secure-boot and @requires-smm, then write
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# accesses to the pflash chip (NVRAM) that holds the UEFI
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# variable store must be restricted to code that executes
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# in SMM, using the additional option "-global
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# driver=cfi.pflash01,property=secure,value=on".
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# Furthermore, a large guest-physical address space
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# (comprising guest RAM, memory hotplug range, and 64-bit
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# PCI MMIO aperture), and/or a high VCPU count, may
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# present high SMRAM requirements from the firmware. On
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# the "pc-q35-*" machine types of the @i386 and @x86_64
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# emulation targets, the SMRAM size may be increased
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# above the default 16MB with the "-global
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# mch.extended-tseg-mbytes=uint16" option. As a rule of
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# thumb, the default 16MB size suffices for 1TB of
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# guest-phys address space and a few tens of VCPUs; for
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# every further TB of guest-phys address space, add 8MB
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# of SMRAM. 48MB should suffice for 4TB of guest-phys
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# address space and 2-3 hundred VCPUs.
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#
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# @secure-boot: The firmware implements the software interfaces for UEFI
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# Secure Boot, as defined in the UEFI specification. Note
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# that without @requires-smm, guest code running with
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# kernel privileges can undermine the security of Secure
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# Boot.
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#
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# @verbose-dynamic: When firmware log capture is enabled, the firmware
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# logs a large amount of debug messages, which may
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# impact boot performance. With log capture disabled,
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# there is no boot performance impact. On the
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# "pc-i440fx-*" and "pc-q35-*" machine types of the
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# @i386 and @x86_64 emulation targets, firmware log
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# capture can be enabled with the QEMU command line
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# options "-chardev file,id=fwdebug,path=LOGFILEPATH
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# -device isa-debugcon,iobase=0x402,chardev=fwdebug".
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# @verbose-dynamic is mutually exclusive with
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# @verbose-static.
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#
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# @verbose-static: The firmware unconditionally produces a large amount
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# of debug messages, which may impact boot performance.
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# This feature may typically be carried by certain UEFI
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# firmware for the "virt-*" machine types of the @arm
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# and @aarch64 emulation targets, where the debug
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# messages are written to the first (always present)
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# PL011 UART. @verbose-static is mutually exclusive
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# with @verbose-dynamic.
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#
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# Since: 3.0
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##
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{ 'enum' : 'FirmwareFeature',
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'data' : [ 'acpi-s3', 'acpi-s4',
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'amd-sev', 'amd-sev-es', 'amd-sev-snp',
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'intel-tdx',
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'enrolled-keys', 'requires-smm', 'secure-boot',
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'verbose-dynamic', 'verbose-static' ] }
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##
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# @FirmwareFlashFile:
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#
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# Defines common properties that are necessary for loading a firmware
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# file into a pflash chip. The corresponding QEMU command line option is
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# "-drive file=@filename,format=@format". Note however that the
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# option-argument shown here is incomplete; it is completed under
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# @FirmwareMappingFlash.
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#
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# @filename: Specifies the filename on the host filesystem where the
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# firmware file can be found.
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#
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# @format: Specifies the block format of the file pointed-to by
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# @filename, such as @raw or @qcow2.
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#
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# Since: 3.0
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##
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{ 'struct' : 'FirmwareFlashFile',
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'data' : { 'filename' : 'str',
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'format' : 'BlockdevDriver' } }
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##
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# @FirmwareFlashType:
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#
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# Describes how the firmware build handles code versus variable
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# persistence.
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#
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# @split: the executable file contains code while the NVRAM
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# template provides variable storage. The executable
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# must be configured read-only and can be shared between
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# multiple guests. The NVRAM template must be cloned
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# for each new guest and configured read-write.
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#
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# @combined: the executable file contains both code and
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# variable storage. The executable must be cloned
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# for each new guest and configured read-write.
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# No NVRAM template will be specified.
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#
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# @stateless: the executable file contains code and variable
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# storage is not persisted. The executable must
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# be configured read-only and can be shared
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# between multiple guests. No NVRAM template
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# will be specified.
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#
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# Since: 7.0.0
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##
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{ 'enum': 'FirmwareFlashMode',
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'data': [ 'split', 'combined', 'stateless' ] }
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##
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# @FirmwareMappingFlash:
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#
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# Describes loading and mapping properties for the firmware executable
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# and its accompanying NVRAM file, when @FirmwareDevice is @flash.
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#
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# @mode: Describes how the firmware build handles code versus variable
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# storage. If not present, it must be treated as if it was
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# configured with value @split. Since: 7.0.0
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#
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# @executable: Identifies the firmware executable. The @mode
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# indicates whether there will be an associated
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# NVRAM template present. The preferred
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# corresponding QEMU command line options are
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# -drive if=none,id=pflash0,readonly=on,file=@executable.@filename,format=@executable.@format
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# -machine pflash0=pflash0
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# or equivalent -blockdev instead of -drive. When
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# @mode is @combined the executable must be
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# cloned before use and configured with readonly=off.
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# With QEMU versions older than 4.0, you have to use
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# -drive if=pflash,unit=0,readonly=on,file=@executable.@filename,format=@executable.@format
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#
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# @nvram-template: Identifies the NVRAM template compatible with
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# @executable, when @mode is set to @split,
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# otherwise it should not be present.
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# Management software instantiates an
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# individual copy -- a specific NVRAM file -- from
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# @nvram-template.@filename for each new virtual
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# machine definition created. @nvram-template.@filename
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# itself is never mapped into virtual machines, only
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# individual copies of it are. An NVRAM file is
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# typically used for persistently storing the
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# non-volatile UEFI variables of a virtual machine
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# definition. The preferred corresponding QEMU
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# command line options are
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# -drive if=none,id=pflash1,readonly=off,file=FILENAME_OF_PRIVATE_NVRAM_FILE,format=@nvram-template.@format
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# -machine pflash1=pflash1
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# or equivalent -blockdev instead of -drive.
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# With QEMU versions older than 4.0, you have to use
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# -drive if=pflash,unit=1,readonly=off,file=FILENAME_OF_PRIVATE_NVRAM_FILE,format=@nvram-template.@format
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#
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# Since: 3.0
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##
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{ 'struct' : 'FirmwareMappingFlash',
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'data' : { '*mode': 'FirmwareFlashMode',
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'executable' : 'FirmwareFlashFile',
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'*nvram-template' : 'FirmwareFlashFile' } }
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##
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# @FirmwareMappingKernel:
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#
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# Describes loading and mapping properties for the firmware executable,
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# when @FirmwareDevice is @kernel.
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#
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# @filename: Identifies the firmware executable. The firmware executable
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# may be shared by multiple virtual machine definitions. The
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# corresponding QEMU command line option is "-kernel
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# @filename".
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#
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# Since: 3.0
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##
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{ 'struct' : 'FirmwareMappingKernel',
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'data' : { 'filename' : 'str' } }
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##
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# @FirmwareMappingMemory:
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#
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# Describes loading and mapping properties for the firmware executable,
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# when @FirmwareDevice is @memory.
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#
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# @filename: Identifies the firmware executable. The firmware executable
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# may be shared by multiple virtual machine definitions. The
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# corresponding QEMU command line option is "-bios
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# @filename".
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#
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# Since: 3.0
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##
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{ 'struct' : 'FirmwareMappingMemory',
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'data' : { 'filename' : 'str' } }
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##
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# @FirmwareMapping:
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#
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# Provides a discriminated structure for firmware to describe its
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# loading / mapping properties.
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#
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# @device: Selects the device type that the firmware must be mapped
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# into.
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#
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# Since: 3.0
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##
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{ 'union' : 'FirmwareMapping',
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'base' : { 'device' : 'FirmwareDevice' },
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'discriminator' : 'device',
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'data' : { 'flash' : 'FirmwareMappingFlash',
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'kernel' : 'FirmwareMappingKernel',
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'memory' : 'FirmwareMappingMemory' } }
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##
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# @Firmware:
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#
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# Describes a firmware (or a firmware use case) to management software.
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#
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# It is possible for multiple @Firmware elements to match the search
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# criteria of management software. Applications thus need rules to pick
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# one of the many matches, and users need the ability to override distro
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# defaults.
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#
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# It is recommended to create firmware JSON files (each containing a
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# single @Firmware root element) with a double-digit prefix, for example
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# "50-ovmf.json", "50-seabios-256k.json", etc, so they can be sorted in
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# predictable order. The firmware JSON files should be searched for in
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# three directories:
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#
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# - /usr/share/qemu/firmware -- populated by distro-provided firmware
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# packages (XDG_DATA_DIRS covers
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# /usr/share by default),
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#
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# - /etc/qemu/firmware -- exclusively for sysadmins' local additions,
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#
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# - $XDG_CONFIG_HOME/qemu/firmware -- exclusively for per-user local
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# additions (XDG_CONFIG_HOME
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# defaults to $HOME/.config).
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#
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# Top-down, the list of directories goes from general to specific.
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#
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# Management software should build a list of files from all three
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# locations, then sort the list by filename (i.e., last pathname
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# component). Management software should choose the first JSON file on
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# the sorted list that matches the search criteria. If a more specific
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# directory has a file with same name as a less specific directory, then
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# the file in the more specific directory takes effect. If the more
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# specific file is zero length, it hides the less specific one.
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#
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# For example, if a distro ships
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#
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# - /usr/share/qemu/firmware/50-ovmf.json
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#
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# - /usr/share/qemu/firmware/50-seabios-256k.json
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#
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# then the sysadmin can prevent the default OVMF being used at all with
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#
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# $ touch /etc/qemu/firmware/50-ovmf.json
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#
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# The sysadmin can replace/alter the distro default OVMF with
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#
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# $ vim /etc/qemu/firmware/50-ovmf.json
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#
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# or they can provide a parallel OVMF with higher priority
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#
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# $ vim /etc/qemu/firmware/10-ovmf.json
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#
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# or they can provide a parallel OVMF with lower priority
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#
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# $ vim /etc/qemu/firmware/99-ovmf.json
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#
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# @description: Provides a human-readable description of the firmware.
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# Management software may or may not display @description.
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#
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# @interface-types: Lists the types of interfaces that the firmware can
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# expose to the guest OS. This is a non-empty, ordered
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# list; entries near the beginning of @interface-types
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# are considered more native to the firmware, and/or
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# to have a higher quality implementation in the
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# firmware, than entries near the end of
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# @interface-types.
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#
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# @mapping: Describes the loading / mapping properties of the firmware.
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#
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# @targets: Collects the target architectures (QEMU system emulators)
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# and their machine types that may execute the firmware.
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#
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# @features: Lists the features that the firmware supports, and the
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# platform requirements it presents.
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#
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# @tags: A list of auxiliary strings associated with the firmware for
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# which @description is not appropriate, due to the latter's
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# possible exposure to the end-user. @tags serves development and
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# debugging purposes only, and management software shall
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# explicitly ignore it.
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#
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# Since: 3.0
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#
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# Examples:
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#
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# {
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# "description": "SeaBIOS",
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# "interface-types": [
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# "bios"
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# ],
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# "mapping": {
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# "device": "memory",
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# "filename": "/usr/share/seabios/bios-256k.bin"
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# },
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# "targets": [
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# {
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# "architecture": "i386",
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# "machines": [
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# "pc-i440fx-*",
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# "pc-q35-*"
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# ]
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# },
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# {
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# "architecture": "x86_64",
|
|
# "machines": [
|
|
# "pc-i440fx-*",
|
|
# "pc-q35-*"
|
|
# ]
|
|
# }
|
|
# ],
|
|
# "features": [
|
|
# "acpi-s3",
|
|
# "acpi-s4"
|
|
# ],
|
|
# "tags": [
|
|
# "CONFIG_BOOTSPLASH=n",
|
|
# "CONFIG_ROM_SIZE=256",
|
|
# "CONFIG_USE_SMM=n"
|
|
# ]
|
|
# }
|
|
#
|
|
# {
|
|
# "description": "OVMF with SB+SMM, empty varstore",
|
|
# "interface-types": [
|
|
# "uefi"
|
|
# ],
|
|
# "mapping": {
|
|
# "device": "flash",
|
|
# "executable": {
|
|
# "filename": "/usr/share/OVMF/OVMF_CODE.secboot.fd",
|
|
# "format": "raw"
|
|
# },
|
|
# "nvram-template": {
|
|
# "filename": "/usr/share/OVMF/OVMF_VARS.fd",
|
|
# "format": "raw"
|
|
# }
|
|
# },
|
|
# "targets": [
|
|
# {
|
|
# "architecture": "x86_64",
|
|
# "machines": [
|
|
# "pc-q35-*"
|
|
# ]
|
|
# }
|
|
# ],
|
|
# "features": [
|
|
# "acpi-s3",
|
|
# "amd-sev",
|
|
# "requires-smm",
|
|
# "secure-boot",
|
|
# "verbose-dynamic"
|
|
# ],
|
|
# "tags": [
|
|
# "-a IA32",
|
|
# "-a X64",
|
|
# "-p OvmfPkg/OvmfPkgIa32X64.dsc",
|
|
# "-t GCC48",
|
|
# "-b DEBUG",
|
|
# "-D SMM_REQUIRE",
|
|
# "-D SECURE_BOOT_ENABLE",
|
|
# "-D FD_SIZE_4MB"
|
|
# ]
|
|
# }
|
|
#
|
|
# {
|
|
# "description": "OVMF with SB+SMM, SB enabled, MS certs enrolled",
|
|
# "interface-types": [
|
|
# "uefi"
|
|
# ],
|
|
# "mapping": {
|
|
# "device": "flash",
|
|
# "executable": {
|
|
# "filename": "/usr/share/OVMF/OVMF_CODE.secboot.fd",
|
|
# "format": "raw"
|
|
# },
|
|
# "nvram-template": {
|
|
# "filename": "/usr/share/OVMF/OVMF_VARS.secboot.fd",
|
|
# "format": "raw"
|
|
# }
|
|
# },
|
|
# "targets": [
|
|
# {
|
|
# "architecture": "x86_64",
|
|
# "machines": [
|
|
# "pc-q35-*"
|
|
# ]
|
|
# }
|
|
# ],
|
|
# "features": [
|
|
# "acpi-s3",
|
|
# "amd-sev",
|
|
# "enrolled-keys",
|
|
# "requires-smm",
|
|
# "secure-boot",
|
|
# "verbose-dynamic"
|
|
# ],
|
|
# "tags": [
|
|
# "-a IA32",
|
|
# "-a X64",
|
|
# "-p OvmfPkg/OvmfPkgIa32X64.dsc",
|
|
# "-t GCC48",
|
|
# "-b DEBUG",
|
|
# "-D SMM_REQUIRE",
|
|
# "-D SECURE_BOOT_ENABLE",
|
|
# "-D FD_SIZE_4MB"
|
|
# ]
|
|
# }
|
|
#
|
|
# {
|
|
# "description": "OVMF with SEV-ES support",
|
|
# "interface-types": [
|
|
# "uefi"
|
|
# ],
|
|
# "mapping": {
|
|
# "device": "flash",
|
|
# "executable": {
|
|
# "filename": "/usr/share/OVMF/OVMF_CODE.fd",
|
|
# "format": "raw"
|
|
# },
|
|
# "nvram-template": {
|
|
# "filename": "/usr/share/OVMF/OVMF_VARS.fd",
|
|
# "format": "raw"
|
|
# }
|
|
# },
|
|
# "targets": [
|
|
# {
|
|
# "architecture": "x86_64",
|
|
# "machines": [
|
|
# "pc-q35-*"
|
|
# ]
|
|
# }
|
|
# ],
|
|
# "features": [
|
|
# "acpi-s3",
|
|
# "amd-sev",
|
|
# "amd-sev-es",
|
|
# "verbose-dynamic"
|
|
# ],
|
|
# "tags": [
|
|
# "-a X64",
|
|
# "-p OvmfPkg/OvmfPkgX64.dsc",
|
|
# "-t GCC48",
|
|
# "-b DEBUG",
|
|
# "-D FD_SIZE_4MB"
|
|
# ]
|
|
# }
|
|
#
|
|
# {
|
|
# "description": "UEFI firmware for ARM64 virtual machines",
|
|
# "interface-types": [
|
|
# "uefi"
|
|
# ],
|
|
# "mapping": {
|
|
# "device": "flash",
|
|
# "executable": {
|
|
# "filename": "/usr/share/AAVMF/AAVMF_CODE.fd",
|
|
# "format": "raw"
|
|
# },
|
|
# "nvram-template": {
|
|
# "filename": "/usr/share/AAVMF/AAVMF_VARS.fd",
|
|
# "format": "raw"
|
|
# }
|
|
# },
|
|
# "targets": [
|
|
# {
|
|
# "architecture": "aarch64",
|
|
# "machines": [
|
|
# "virt-*"
|
|
# ]
|
|
# }
|
|
# ],
|
|
# "features": [
|
|
#
|
|
# ],
|
|
# "tags": [
|
|
# "-a AARCH64",
|
|
# "-p ArmVirtPkg/ArmVirtQemu.dsc",
|
|
# "-t GCC48",
|
|
# "-b DEBUG",
|
|
# "-D DEBUG_PRINT_ERROR_LEVEL=0x80000000"
|
|
# ]
|
|
# }
|
|
##
|
|
{ 'struct' : 'Firmware',
|
|
'data' : { 'description' : 'str',
|
|
'interface-types' : [ 'FirmwareOSInterface' ],
|
|
'mapping' : 'FirmwareMapping',
|
|
'targets' : [ 'FirmwareTarget' ],
|
|
'features' : [ 'FirmwareFeature' ],
|
|
'tags' : [ 'str' ] } }
|