kernel/linux.git/drivers/base/firmware_loader/Kconfig, branch v5.18.2

firmware_loader: EXTRA_FIRMWARE does not support compressed files

2022-02-25T11:14:42+00:00

Document in the firmware loader Kconfig help text that firmware image file compression is not supported for builtin EXTRA_FIRMWARE files so that someone does not waste time trying that. Cc: Luis Chamberlain Cc: Greg Kroah-Hartman Cc: "Rafael J. Wysocki" Acked-by: Luis Chamberlain Signed-off-by: Randy Dunlap Link: https://lore.kernel.org/r/20220214222311.9758-1-rdunlap@infradead.org Signed-off-by: Greg Kroah-Hartman

drivers: base: Fix Kconfig indentation

2019-11-20T14:10:25+00:00

Adjust indentation from spaces to tab (+optional two spaces) as in coding style with command like: $ sed -e 's/^ /\t/' -i */Kconfig Signed-off-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20191120134256.16186-1-krzk@kernel.org Signed-off-by: Greg Kroah-Hartman

firmware_class: make firmware caching configurable

2019-11-14T00:14:16+00:00

Because firmware caching generates uevent messages that are sent over a netlink socket, it can prevent suspend on many platforms. It's also not always useful, so make it a configurable option. Signed-off-by: Mark Salyzyn Cc: Tim Murray Cc: Venkata Narendra Kumar Gutta Cc: Luis Chamberlain Cc: Greg Kroah-Hartman Cc: Rafael J. Wysocki Cc: linux-kernel@vger.kernel.org Cc: kernel-team@android.com Acked-by: Luis Chamberlain Link: https://lore.kernel.org/r/20191113225429.118495-1-salyzyn@android.com Signed-off-by: Greg Kroah-Hartman

firmware: Add support for loading compressed files

2019-06-18T07:11:22+00:00

This patch adds the support for loading compressed firmware files. The primary motivation is to reduce the storage size; e.g. currently the files in /lib/firmware on my machine counts up to 419MB, while they can be reduced to 130MB by file compression. The patch introduces a new kconfig option CONFIG_FW_LOADER_COMPRESS. Even with this option set, the firmware loader still tries to load the original firmware file as-is at first, but then falls back to the file with ".xz" extension when it's not found, and the decompressed file content is returned to the caller of request_firmware(). So, no change is needed for the rest. Currently only XZ format is supported. A caveat is that the kernel XZ helper code supports only CRC32 (or none) integrity check type, so you'll have to compress the files via xz -C crc32 option. Since we can't determine the expanded size immediately from an XZ file, the patch re-uses the paged buffer that was used for the user-mode fallback; it puts the decompressed content page, which are vmapped at the end. The paged buffer code is conditionally built with a new Kconfig that is selected automatically. Signed-off-by: Takashi Iwai Signed-off-by: Greg Kroah-Hartman

drivers: base: firmware_loader: add proper SPDX identifiers on files that did not have them.

2019-04-04T18:03:40+00:00

There were two files in the firmware_loader code that did not have SPDX identifiers on them, so fix that up. Cc: Luis Chamberlain Signed-off-by: Greg Kroah-Hartman

firmware_loader: move kconfig FW_LOADER entries to its own file

2018-05-14T14:43:10+00:00

This will make it easier to track and easier to understand what components and features are part of the FW_LOADER. There are some components related to firmware which have *nothing* to do with the FW_LOADER, souch as PREVENT_FIRMWARE_BUILD. Reviewed-by: Kees Cook Signed-off-by: Luis R. Rodriguez Signed-off-by: Greg Kroah-Hartman