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linux: fix kernel config fragment support

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Currently, using kernel config fragments is not working. If you try
adding one as documented in the Yocto Mega Manual [1], it will be
ignored.

There are two reasons for this:
- The config fragment logic is in kernel-yocto.bbclass, so we need to inherit
  that (this is similar to what linux-raspberrypi does in meta-raspberrypi).
- We remove ${B}/.config, which undoes any config created by
  kernel-yocto.

Fix this by inheriting kernel-yocto and not removing ${B}/.config. With
this patch, fragments are working. Note that we also need to add a few
variables (like KERNEL_KBUILD) to make kernel-yocto happy.

[1]
http://www.yoctoproject.org/docs/2.5/mega-manual/mega-manual.html#creating-the-append-file

Signed-off-by: Martin Kelly <mkelly@xevo.com>
This commit is contained in:
Martin Kelly 2018-01-11 15:06:13 -08:00
parent 2c85181c92
commit 1495b5e567
3 changed files with 9 additions and 5 deletions
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4
recipes-kernel/linux/linux-mainline_4.14.2.bb
View File

@ -8,6 +8,10 @@ inherit kernel
require linux.inc require linux.inc
# Since we're not using git, this doesn't make a difference, but we need to fill
# in something or kernel-yocto.bbclass will fail.
KBRANCH ?= "master"
# Pull in the devicetree files into the rootfs # Pull in the devicetree files into the rootfs
RDEPENDS_kernel-base += "kernel-devicetree" RDEPENDS_kernel-base += "kernel-devicetree"

2
recipes-kernel/linux/linux-mainline_git.bb
View File

@ -8,6 +8,8 @@ inherit kernel
require linux.inc require linux.inc
KBRANCH ?= "master"
# Pull in the devicetree files into the rootfs # Pull in the devicetree files into the rootfs
RDEPENDS_kernel-base += "kernel-devicetree" RDEPENDS_kernel-base += "kernel-devicetree"

8
recipes-kernel/linux/linux.inc
View File

@ -5,7 +5,7 @@ LIC_FILES_CHKSUM = "file://COPYING;md5=d7810fab7487fb0aad327b76f1be7cd7"
INC_PR = "r0" INC_PR = "r0"
inherit kernel siteinfo inherit kernel kernel-yocto siteinfo
# Enable OABI compat for people stuck with obsolete userspace # Enable OABI compat for people stuck with obsolete userspace
ARM_KEEP_OABI ?= "0" ARM_KEEP_OABI ?= "0"
@ -22,6 +22,8 @@ LOGO_SIZE ?= '${@base_conditional("MACHINE_GUI_CLASS", "bigscreen", "vga", "qvga
# accordingly. # accordingly.
LOCALVERSION ?= "" LOCALVERSION ?= ""
KCONFIG_MODE ?= "alldefconfig"
KMACHINE ?= "${MACHINE}"
#kernel_conf_variable CMDLINE "\"${CMDLINE} ${CMDLINE_DEBUG}\"" #kernel_conf_variable CMDLINE "\"${CMDLINE} ${CMDLINE_DEBUG}\""
kernel_conf_variable() { kernel_conf_variable() {
@ -35,7 +37,6 @@ kernel_conf_variable() {
} }
do_configure_prepend() { do_configure_prepend() {
echo "" > ${B}/.config
CONF_SED_SCRIPT="" CONF_SED_SCRIPT=""
# #
@ -111,9 +112,6 @@ do_configure_prepend() {
kernel_conf_variable CMDLINE \"${CMDLINE_NFSROOT_USB} ${CMDLINE_DEBUG}\" kernel_conf_variable CMDLINE \"${CMDLINE_NFSROOT_USB} ${CMDLINE_DEBUG}\"
fi fi
sed -e "${CONF_SED_SCRIPT}" \
< '${WORKDIR}/defconfig' >>'${B}/.config'
yes '' | oe_runmake -C ${S} O=${B} oldconfig yes '' | oe_runmake -C ${S} O=${B} oldconfig
} }