diff options
author | Patrick Williams <patrick@stwcx.xyz> | 2016-08-17 22:31:25 +0300 |
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committer | Patrick Williams <patrick@stwcx.xyz> | 2016-08-22 19:43:26 +0300 |
commit | 60f9d69e016b11c468c98ea75ba0a60c44afbbc4 (patch) | |
tree | ecb49581a9e41a37943c22cd9ef3f63451b20ee7 /import-layers/yocto-poky/meta/classes/kernel-grub.bbclass | |
parent | e18c61205e0234b03697129c20cc69c9b3940efc (diff) | |
download | openbmc-60f9d69e016b11c468c98ea75ba0a60c44afbbc4.tar.xz |
yocto-poky: Move to import-layers subdir
We are going to import additional layers, so create a subdir to
hold all of the layers that we import with git-subtree.
Change-Id: I6f732153a22be8ca663035c518837e3cc5ec0799
Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Diffstat (limited to 'import-layers/yocto-poky/meta/classes/kernel-grub.bbclass')
-rw-r--r-- | import-layers/yocto-poky/meta/classes/kernel-grub.bbclass | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/import-layers/yocto-poky/meta/classes/kernel-grub.bbclass b/import-layers/yocto-poky/meta/classes/kernel-grub.bbclass new file mode 100644 index 000000000..a63f482a9 --- /dev/null +++ b/import-layers/yocto-poky/meta/classes/kernel-grub.bbclass @@ -0,0 +1,91 @@ +# +# While installing a rpm to update kernel on a deployed target, it will update +# the boot area and the boot menu with the kernel as the priority but allow +# you to fall back to the original kernel as well. +# +# - In kernel-image's preinstall scriptlet, it backs up original kernel to avoid +# probable confliction with the new one. +# +# - In kernel-image's postinstall scriptlet, it modifies grub's config file to +# updates the new kernel as the boot priority. +# + +pkg_preinst_kernel-image_append () { + # Parsing confliction + [ -f "$D/boot/grub/menu.list" ] && grubcfg="$D/boot/grub/menu.list" + [ -f "$D/boot/grub/grub.cfg" ] && grubcfg="$D/boot/grub/grub.cfg" + if [ -n "$grubcfg" ]; then + # Dereference symlink to avoid confliction with new kernel name. + if grep -q "/${KERNEL_IMAGETYPE} \+root=" $grubcfg; then + if [ -L "$D/boot/${KERNEL_IMAGETYPE}" ]; then + kimage=`realpath $D/boot/${KERNEL_IMAGETYPE} 2>/dev/null` + if [ -f "$D$kimage" ]; then + sed -i "s:${KERNEL_IMAGETYPE} \+root=:${kimage##*/} root=:" $grubcfg + fi + fi + fi + + # Rename old kernel if it conflicts with new kernel name. + if grep -q "/${KERNEL_IMAGETYPE}-${KERNEL_VERSION} \+root=" $grubcfg; then + if [ -f "$D/boot/${KERNEL_IMAGETYPE}-${KERNEL_VERSION}" ]; then + timestamp=`date +%s` + kimage="$D/boot/${KERNEL_IMAGETYPE}-${KERNEL_VERSION}-$timestamp-back" + sed -i "s:${KERNEL_IMAGETYPE}-${KERNEL_VERSION} \+root=:${kimage##*/} root=:" $grubcfg + mv "$D/boot/${KERNEL_IMAGETYPE}-${KERNEL_VERSION}" "$kimage" + fi + fi + fi +} + +pkg_postinst_kernel-image_prepend () { + get_new_grub_cfg() { + grubcfg="$1" + old_image="$2" + title="Update ${KERNEL_IMAGETYPE}-${KERNEL_VERSION}-${PV}" + if [ "${grubcfg##*/}" = "grub.cfg" ]; then + rootfs=`grep " *linux \+[^ ]\+ \+root=" $grubcfg -m 1 | \ + sed "s#${old_image}#${old_image%/*}/${KERNEL_IMAGETYPE}-${KERNEL_VERSION}#"` + + echo "menuentry \"$title\" {" + echo " set root=(hd0,1)" + echo "$rootfs" + echo "}" + elif [ "${grubcfg##*/}" = "menu.list" ]; then + rootfs=`grep "kernel \+[^ ]\+ \+root=" $grubcfg -m 1 | \ + sed "s#${old_image}#${old_image%/*}/${KERNEL_IMAGETYPE}-${KERNEL_VERSION}#"` + + echo "default 0" + echo "timeout 30" + echo "title $title" + echo "root (hd0,0)" + echo "$rootfs" + fi + } + + get_old_grub_cfg() { + grubcfg="$1" + if [ "${grubcfg##*/}" = "grub.cfg" ]; then + cat "$grubcfg" + elif [ "${grubcfg##*/}" = "menu.list" ]; then + sed -e '/^default/d' -e '/^timeout/d' "$grubcfg" + fi + } + + if [ -f "$D/boot/grub/grub.cfg" ]; then + grubcfg="$D/boot/grub/grub.cfg" + old_image=`grep ' *linux \+[^ ]\+ \+root=' -m 1 "$grubcfg" | awk '{print $2}'` + elif [ -f "$D/boot/grub/menu.list" ]; then + grubcfg="$D/boot/grub/menu.list" + old_image=`grep '^kernel \+[^ ]\+ \+root=' -m 1 "$grubcfg" | awk '{print $2}'` + fi + + # Don't update grubcfg at first install while old bzImage doesn't exist. + if [ -f "$D/boot/${old_image##*/}" ]; then + grubcfgtmp="$grubcfg.tmp" + get_new_grub_cfg "$grubcfg" "$old_image" > $grubcfgtmp + get_old_grub_cfg "$grubcfg" >> $grubcfgtmp + mv $grubcfgtmp $grubcfg + echo "Caution! Update kernel may affect kernel-module!" + fi +} + |