[src/trunk]: src/external/broadcom/bwfm Add a note about "bwfm" firmware upst...

[thorpej <thorpej%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/19ef5e91693c
branches:  trunk
changeset: 1008440:19ef5e91693c
user:      thorpej <thorpej%NetBSD.org@localhost>
date:      Sun Mar 22 21:06:35 2020 +0000

description:
Add a note about "bwfm" firmware upstreams.

diffstat:

 external/broadcom/bwfm/README |  38 ++++++++++++++++++++++++++++++++++++++
 1 files changed, 38 insertions(+), 0 deletions(-)

diffs (42 lines):

diff -r 4e757b00c029 -r 19ef5e91693c external/broadcom/bwfm/README
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/external/broadcom/bwfm/README     Sun Mar 22 21:06:35 2020 +0000
@@ -0,0 +1,38 @@
+#      $NetBSD: README,v 1.1 2020/03/22 21:06:35 thorpej Exp $
+
+Firmware images for Broadcom Fullmac are available from the linux-firmware
+repository:
+
+  https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/
+
+It is always preferable to use firmware and configs from mainline Linux.
+
+When importing from linux-firmware, use vendor tag "LINUX" and release
+tag that's the name of the linux-firmware shapshot you're importing,
+e.g. "linux-firmware-20200316".
+
+
+There are some cases where the required files are not available from
+mainline linux-firmware.  In these cases, different vendor / release
+tags should be used for these specific files.  These special cases
+are listed here.
+
+Pinebook Pro "bwfm" firmware
+============================
+These firmware images come from Tobias Schramm's pinebook-firmware
+repository:
+
+  https://gitlab.manjaro.org/tsys/pinebook-firmware/-/tree/master/brcm
+
+When importing from this repository, use vendor tag "tsys-pinebook-firmware"
+and a release tag "commit-SHA" where SHA is the Git commit identifier.
+
+This applies to the following files:
+
+       dist/brcmfmac43456-sdio.bin
+       dist/brcmfmac43456-sdio.clm_blob
+       dist/brcmfmac43456-sdio.pine64,pinebook-pro.txt
+
+Note that in the pinebook-firmware repository, the file
+brcmfmac43456-sdio.pine64,pinebook-pro.txt is a symbolic link to
+brcmfmac43456-sdio.txt.