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| author |   Patrick Ohly <patrick.ohly@intel.com> | 2015-09-03 20:42:28 +0200 |
|---|---|---|
| committer |   Richard Purdie <richard.purdie@linuxfoundation.org> | 2015-09-06 15:24:24 +0100 |
| commit | 1b64664f0c388f41084f5db6e46e3e68c53fb6d9 (patch) | |
| tree | ec9f01f879c596c59f064cd0edb8a58d8acb085f | |
| parent | 0352841cd92f6316bcac092e2fff9d28c352b36b (diff) | |
| download | openembedded-core-contrib-1b64664f0c388f41084f5db6e46e3e68c53fb6d9.tar.gz | |
initramfs-live-boot: create /dev/console
Some kernels, for example linux-yocto 3.19 for qemux86, fail to
execute /init in an initramfs unless there is already a /dev/console
char device in the initramfs. Booting then fails with:
Kernel panic - not syncing: /dev/console is missing or not a character device!
Please ensure your rootfs is properly configured
The panic itself comes from a linux-yocto specific patch to
kernel_init_freeable in init/main.c, but even without it, that
function will print an error when /dev/console is missing. The
kernel's Documentation/initrd.txt also mentions creating that device.
It remained unclear why this is not a problem on other machines. On
intel-corei7-64 from meta-intel, something (the kernel?) creates
/dev/console and /dev/[012] before transfering control to the init
script. In that case, creating /dev/console in advance is not
necessary, but does not cause any problem either.
Signed-off-by: Patrick Ohly <patrick.ohly@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
| -rw-r--r-- | meta/recipes-core/initrdscripts/initramfs-live-boot_1.0.bb | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/meta/recipes-core/initrdscripts/initramfs-live-boot_1.0.bb b/meta/recipes-core/initrdscripts/initramfs-live-boot_1.0.bb index b54cb619f1..57b30254a6 100644 --- a/meta/recipes-core/initrdscripts/initramfs-live-boot_1.0.bb +++ b/meta/recipes-core/initrdscripts/initramfs-live-boot_1.0.bb @@ -11,9 +11,11 @@ S = "${WORKDIR}" do_install() { install -m 0755 ${WORKDIR}/init-live.sh ${D}/init + install -d ${D}/dev + mknod -m 622 ${D}/dev/console c 5 1 } -FILES_${PN} += " /init " +FILES_${PN} += " /init /dev " # Due to kernel dependency PACKAGE_ARCH = "${MACHINE_ARCH}" |