Прошивка Linux

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This page is a translated version of the page Linux firmware and the translation is 70% complete.
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Прошивка Linux — это пакет, распространяемый вместе ядром Linux и содержащий в себе различные прошивки в двоичном коде , которые могут понадобиться для полноценного функционирования некоторых устройств. Эти прошивки обычно распространяются в двоичном коде, так как производители оборудования не публикуют исходный код, которые необходим для генерации самой прошивки.

Современным видеокартам AMD и NVIDIA почти всегда требуются загрузка двоичного кода для корректного функционирования.

Starting at Broxton (a Skylake-based micro-architecture) Intel CPUs require binary blobs for additional low-power idle states (DMC), graphics workload scheduling on the various graphics parallel engines (GuC), and offloading some media functions from the CPU to GPU (HuC).[1]

Additionally, modern Intel Wi-Fi chipsets almost always require blobs.[2]


For security reasons, hotloading firmware into a running kernel has been shunned upon. Modern init systems such as systemd have strongly discouraged loading firmware from userspace.


A few kernel options are important to consider when building in firmware support for certain devices in the Linux kernel:

Including firmware files into binary kernel images that are not available under the terms of the GPL, may result in a violation of the GPL if the image is distributed. It is wise to consult a lawyer before distributing images that contain firmware files from sys-kernel/linux-firmware.

Ядра до версии 4.18

For kernels released prior to version 4.18:

Note this option has been removed as of versions v4.16 and above.[3] Enabling this option was previously necessary to build each required firmware blob specified by EXTRA_FIRMWARE into the kernel directly, where the request_firmware() function will find them without having to make a call out to userspace. On older kernels, it is necessary to enable it.
ЯДРО Включение поддержки прошивки Linux
Device Drivers  --->
  Generic Driver Options  --->
    -*- Userspace firmware loading support
    [*]   Include in-kernel firmware blobs in kernel binary
    (/lib/firmware) Firmware blobs root directory

Ядра версии 4.18 и выше

Для ядер, начиная с версии 4.18:

Firmware loading facility (CONFIG_FW_LOADER)
This option is provided for the case where none of the in-tree modules require userspace firmware loading support, but a module built out-of-tree does.
Build named firmware blobs into the kernel binary (CONFIG_EXTRA_FIRMWARE)
This option is a string and takes the (space-separated) names of firmware files to be built into the kernel. These files will then be accessible to the kernel at runtime.
ЯДРО Включение поддержки прошивок в Linux
Device Drivers  --->
  Generic Driver Options  --->
    Firmware loader --->
       -*- Firmware loading facility
       () Build named firmware blobs into the kernel binary
       (/lib/firmware) Firmware blobs root directory


USE flags for sys-kernel/linux-firmware Linux firmware files

compress-xz Compress firmware using xz (app-arch/xz-utils) before installation
compress-zstd Compress firmware using zstd (app-arch/zstd) before installation
initramfs Create and install initramfs for early microcode loading in /boot (only AMD for now)
redistributable Install also non-free (but redistributable) firmware files
savedconfig Allows individual selection of firmware files
unknown-license Install firmware files whose license is unknown


root #emerge --ask sys-kernel/linux-firmware

Необязательно: savedconfig

After emerging sys-kernel/linux-firmware, the configuration file is made into /etc/portage/savedconfig/sys-kernel/linux-firmware-ddmmyyyy. This file can be edited and the unwanted lines be commented out or deleted. Edit and save the file and re-emerge sys-kernel/linux-firmware with the savedconfig USE flag:

root #echo sys-kernel/linux-firmware savedconfig >> /etc/portage/package.use/kernel
root #emerge --ask sys-kernel/linux-firmware

Необязательно: Сжатие

Firmware to be loaded into the kernel can be compressed in order to achieve greater space efficiency and faster read speeds (at the expense of processing time). See the CONFIG_FW_LOADER_COMPRESS kernel symbol for additional information.

xz compression is supported via the CONFIG_FW_LOADER_COMPRESS_XZ symbol. Note that only none or crc32 integrity check types (by passing -C crc32 option to the xz command) are supported.

As of kernel version 5.19, zstd compression is supported via the CONFIG_FW_LOADER_COMPRESS_ZSTD symbol.[4]

Устранение проблем

Поиск загруженной прошивки

dmesg can be grepped to determine what firmware has been loaded:

user $dmesg | grep -i firmware



root #emerge --ask --depclean --verbose sys-kernel/linux-firmware

Смотрите также

  • Fwupd — a daemon that provides a safe, reliable way of applying firmware updates on Linux.
  • Kernel — основным компонентом операционной системы.
  • Iwlwifi — драйвер для современных беспроводных чипов Intel.
  • Microcode — describes various ways to update a CPU's microcode in Gentoo.
  • AMDGPU — the next generation family of open source graphics drivers using the new Display Core (DC) framework for Vega GPUs and Raven Ridge GPUs. It is however also capable of handling newer AMD/ATI Radeon graphics cards based on GCN1.0+, namely the Southern Islands, Sea Islands, Volcanic Islands, and Arctic Islands chipsets.
  • Intel — the open source graphics driver for Intel GMA on-board graphics cards and Intel Arc dedicated graphics cards, starting with the Intel 810.

Внешние ресурсы