From 1b64664f0c388f41084f5db6e46e3e68c53fb6d9 Mon Sep 17 00:00:00 2001 From: Patrick Ohly Date: Thu, 3 Sep 2015 20:42:28 +0200 Subject: 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 Signed-off-by: Richard Purdie --- meta/recipes-core/initrdscripts/initramfs-live-boot_1.0.bb | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) 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}" -- cgit 1.2.3-korg