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kernel_wireless_regdb: Add class for embedding regulatory data into older kernel

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Linux kernels before v4.15, allowed to be compiled with static
regulatory database if it was put under net/wireless/db.txt.

Add kernel_wireless_regdb class which allows in such cases to embed the
wireless regulatory database directly in the Linux kernel during build
process.

Usage:
1. The class should be inherited by kernel recipe (e.g. in
   linux-yocto_%.bbappend).
2. For Linux kernels up to v4.14, build kernel with CONFIG_EXPERT and
   CONFIG_CFG80211_INTERNAL_REGDB.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
This commit is contained in:
Krzysztof Kozlowski 2018-07-05 20:58:12 +02:00 committed by Khem Raj
parent 20e3c3e2e4
commit 8603b7643b
2 changed files with 29 additions and 0 deletions
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20
meta-networking/classes/kernel_wireless_regdb.bbclass Normal file
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@ -0,0 +1,20 @@
# Linux kernels before v4.15, allowed to be compiled with static
# regulatory database if it was put under net/wireless/db.txt.
#
# This class copies the regulatory plaintext database to kernel sources before
# compiling.
#
# Usage:
# 1. The class should be inherited by kernel recipe (e.g. in
# linux-yocto_%.bbappend).
# 2. For Linux kernels up to v4.14, build kernel with CONFIG_EXPERT and
# CONFIG_CFG80211_INTERNAL_REGDB.
DEPENDS += "wireless-regdb-native"
SRCTREECOVEREDTASKS += "do_kernel_add_regdb"
do_kernel_add_regdb() {
cp ${STAGING_LIBDIR_NATIVE}/crda/db.txt ${S}/net/wireless/db.txt
}
do_kernel_add_regdb[dirs] = "${S}"
addtask kernel_add_regdb before do_build after do_configure

9
meta-networking/recipes-connectivity/wireless-regdb/wireless-regdb_2018.05.31.bb
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@ -22,6 +22,7 @@ do_install() {
# Install static regulatory DB in /lib/firmware for kernel to load.
# This requires Linux kernel >= v4.15.
# For kernel <= v4.14, inherit the kernel_wireless_regdb.bbclass in kernel's recipe.
PACKAGES =+ "${PN}-static"
RCONFLICTS_${PN} = "${PN}-static"
@ -30,4 +31,12 @@ FILES_${PN}-static = " \
${nonarch_base_libdir}/firmware/regulatory.db.p7s \
"
# Native users might want to use the source of regulatory DB.
# This is for example used by Linux kernel <= v4.14 and kernel_wireless_regdb.bbclass.
do_install_append_class-native() {
install -m 0644 -D db.txt ${D}${libdir}/crda/db.txt
}
RSUGGESTS_${PN} = "crda"
BBCLASSEXTEND = "native"