diff options
Diffstat (limited to 'drivers/base/firmware_loader/Kconfig')
| -rw-r--r-- | drivers/base/firmware_loader/Kconfig | 87 |
1 files changed, 86 insertions, 1 deletions
diff --git a/drivers/base/firmware_loader/Kconfig b/drivers/base/firmware_loader/Kconfig index eb15d976a9ea..15eff8a4b505 100644 --- a/drivers/base/firmware_loader/Kconfig +++ b/drivers/base/firmware_loader/Kconfig @@ -1,7 +1,9 @@ +# SPDX-License-Identifier: GPL-2.0 menu "Firmware loader" config FW_LOADER tristate "Firmware loading facility" if EXPERT + select CRYPTO_LIB_SHA256 if FW_LOADER_DEBUG default y help This enables the firmware loading facility in the kernel. The kernel @@ -23,8 +25,31 @@ config FW_LOADER You also want to be sure to enable this built-in if you are going to enable built-in firmware (CONFIG_EXTRA_FIRMWARE). +config FW_LOADER_DEBUG + bool "Log filenames and checksums for loaded firmware" + depends on DYNAMIC_DEBUG + depends on FW_LOADER + default FW_LOADER + help + Select this option to use dynamic debug to log firmware filenames and + SHA256 checksums to the kernel log for each firmware file that is + loaded. + +config RUST_FW_LOADER_ABSTRACTIONS + bool "Rust Firmware Loader abstractions" + depends on RUST + select FW_LOADER + help + This enables the Rust abstractions for the firmware loader API. + if FW_LOADER +config FW_LOADER_PAGED_BUF + bool + +config FW_LOADER_SYSFS + bool + config EXTRA_FIRMWARE string "Build named firmware blobs into the kernel binary" help @@ -56,6 +81,8 @@ config EXTRA_FIRMWARE image since it combines both GPL and non-GPL work. You should consult a lawyer of your own before distributing such an image. + NOTE: Compressed files are not supported in EXTRA_FIRMWARE. + config EXTRA_FIRMWARE_DIR string "Firmware blobs root directory" depends on EXTRA_FIRMWARE != "" @@ -66,6 +93,8 @@ config EXTRA_FIRMWARE_DIR config FW_LOADER_USER_HELPER bool "Enable the firmware sysfs fallback mechanism" + select FW_LOADER_SYSFS + select FW_LOADER_PAGED_BUF help This option enables a sysfs loading facility to enable firmware loading to the kernel through userspace as a fallback mechanism @@ -143,12 +172,68 @@ config FW_LOADER_USER_HELPER_FALLBACK to be used for all firmware requests which explicitly do not disable a a fallback mechanism. Firmware calls which do prohibit a fallback mechanism is request_firmware_direct(). This option is kept for - backward compatibility purposes given this precise mechanism can also + backward compatibility purposes given this precise mechanism can also be enabled by setting the proc sysctl value to true: /proc/sys/kernel/firmware_config/force_sysfs_fallback If you are unsure about this, say N here. +config FW_LOADER_COMPRESS + bool "Enable compressed firmware support" + help + This option enables the support for loading compressed firmware + files. The caller of firmware API receives the decompressed file + content. The compressed file is loaded as a fallback, only after + loading the raw file failed at first. + + Compressed firmware support does not apply to firmware images + that are built into the kernel image (CONFIG_EXTRA_FIRMWARE). + +if FW_LOADER_COMPRESS +config FW_LOADER_COMPRESS_XZ + bool "Enable XZ-compressed firmware support" + select FW_LOADER_PAGED_BUF + select XZ_DEC + default y + help + This option adds the support for XZ-compressed files. + The files have to be compressed with either none or crc32 + integrity check type (pass "-C crc32" option to xz command). + +config FW_LOADER_COMPRESS_ZSTD + bool "Enable ZSTD-compressed firmware support" + select ZSTD_DECOMPRESS + help + This option adds the support for ZSTD-compressed files. + +endif # FW_LOADER_COMPRESS + +config FW_CACHE + bool "Enable firmware caching during suspend" + depends on PM_SLEEP + default y if PM_SLEEP + help + Because firmware caching generates uevent messages that are sent + over a netlink socket, it can prevent suspend on many platforms. + It is also not always useful, so on such platforms we have the + option. + + If unsure, say Y. + +config FW_UPLOAD + bool "Enable users to initiate firmware updates using sysfs" + select FW_LOADER_SYSFS + select FW_LOADER_PAGED_BUF + help + Enabling this option will allow device drivers to expose a persistent + sysfs interface that allows firmware updates to be initiated from + userspace. For example, FPGA based PCIe cards load firmware and FPGA + images from local FLASH when the card boots. The images in FLASH may + be updated with new images provided by the user. Enable this device + to support cards that rely on user-initiated updates for firmware files. + + If unsure, say N. + endif # FW_LOADER endmenu |