Dear Yocto Team,
For an ARM based board (MACHINE = "myboard"), I use a default kernel
config from arch/arm/configs and want now to change some particular
CONFIG_ options.
Trying to follow the documentation, I currently have the following files:
.
+- linux-acme
| |
| +- additional.cfg
|
+- linux-acme_3.8.bb
...in linux-acme_3.8.bb I have
(...)
S = "${WORKDIR}/git"
(...)
KERNEL_DEFCONFIG_myboard = "blabla_defconfig"
do_configure_prepend_myboard() {
install -m 0644 ${S}/arch/${ARCH}/configs/${KERNEL_DEFCONFIG} \
${WORKDIR}/defconfig || die "no default config"
}
SRC_URI_myboard = "git://kernel.ubuntu.com/ubuntu/linux.git;protocol=git \
file://additional.cfg"
(...)
...and in additional.cfg I have
CONFIG_DEVTMPFS_MOUNT=y
CONFIG_MTD_CMDLINE_PARTS=y
CONFIG_MTD_BLOCK=y
CONFIG_MTD_M25P80=y
When I run something like...
$ bitbake -b /yocto/meta-myboard/recipes-kernel/linux/linux-acme_3.8.bb -f
...it seems to find the .cfg file, since it stoped complaining (after
I fixed some paths) and now compiles/builds smoothely.
Anyway, I can't see the changes in the .config in
$BDIR/tmp/work/myboard-linux-gnueabi/linux-acme/3.8+..../git/.config
I imagine something like mixing both configs and running "make
oldconfig" in behind. Anyway before compilation, the changes should be
in the .config, right?
Questions:
1) How can I add single additional options to a default kernel config?
2) What is the best way to check if the options were applied?
3) Do I need another approach, e.g. through a patch, using echo, or
using a .scc file (I tried, but with the same result)?
Best Regards,
Lothar Rubusch
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