From 87050874bd616f81bb6bb07fee07c2307f66b301 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Thi=C3=A9baud=20Weksteen?= Date: Thu, 3 Mar 2022 12:13:47 +1100 Subject: [PATCH] Document firmware_class.path This kernel command-line parameter may be used to alter the loading of firmware. Bug: 222166126 Test: n/a Change-Id: I6dc1ae92694cf08b11ab6c3c41aa3d62c992a72a --- init/README.ueventd.md | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/init/README.ueventd.md b/init/README.ueventd.md index 2401da369..3c7107a4d 100644 --- a/init/README.ueventd.md +++ b/init/README.ueventd.md @@ -147,6 +147,12 @@ directories. If stdout cannot be read, or the program returns with any exit code Ueventd will additionally log all messages sent to stderr from the external program to the serial console after the external program has exited. +If the kernel command-line argument `firmware_class.path` is set, this path +will be used first by the kernel to search for the firmware files. If found, +ueventd will not be called at all. See the +[kernel documentation](https://www.kernel.org/doc/html/v5.10/driver-api/firmware/fw_search_path.html) +for more details on this feature. + ## Coldboot -------- Ueventd must create devices in `/dev` for all devices that have already sent their uevents before