Fabio Erculiani
12 years ago
parent
ebc7806e16
commit
ce1e10241b
@ -1,39 +0,0 @@
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# $Id$
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DEPENDENCIES:
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- GCC and binutils
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- GNU Bash
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- PaX Utilities
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USAGE:
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See http://www.gentoo.org/doc/en/genkernel.xml or
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issue ``genkernel --help''.
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PORTING:
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To port to other arches:
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# cd /usr/share/genkernel
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# cp -Rp x86 ${myarch}
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# mkdir /usr/share/genkernel/pkg/${myarch}
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Modify what is needed in the /usr/share/genkernel/${myarch}
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directory, as well making a generic kernel-config.
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IMPORTANT KERNEL NOTES:
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- You MUST have /dev/pts turned on.
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- To boot genkernel properly, the kernel config must have
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Initial RAM disk support.
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BOOTING A KERNEL WITH INITRD:
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GRUB:
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root= needs to point to your root partition
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vga= should be the resolution you want your screen. 0x317 is
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1024x768 - 16bpp and you'll get a pretty splash if
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configured properly
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GRUB EXAMPLE ENTRY:
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title=2.6.0 [ Genkernel ]
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root (hd0,0)
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kernel (hd0,0)/boot/kernel-2.6.0-gentoo root=/dev/hda3 vga=0x317
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initrd (hd0,0)/boot/initrd-2.6.0-gentoo
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File diff suppressed because it is too large
Load Diff
@ -1,177 +1,177 @@
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# $Id$
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set_bootloader() {
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case "${BOOTLOADER}" in
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grub)
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set_bootloader_grub
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;;
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grub2)
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set_bootloader_grub2
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;;
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*)
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print_warning "Bootloader ${BOOTLOADER} is not currently supported"
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;;
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esac
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case "${BOOTLOADER}" in
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grub)
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set_bootloader_grub
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;;
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grub2)
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set_bootloader_grub2
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;;
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*)
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print_warning "Bootloader ${BOOTLOADER} is not currently supported"
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;;
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esac
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}
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set_bootloader_read_fstab() {
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local ROOTFS=$(awk 'BEGIN{RS="((#[^\n]*)?\n)"}( $2 == "/" ) { print $1; exit }' /etc/fstab)
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local BOOTFS=$(awk 'BEGIN{RS="((#[^\n]*)?\n)"}( $2 == "'${BOOTDIR}'") { print $1; exit }' /etc/fstab)
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local ROOTFS=$(awk 'BEGIN{RS="((#[^\n]*)?\n)"}( $2 == "/" ) { print $1; exit }' /etc/fstab)
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local BOOTFS=$(awk 'BEGIN{RS="((#[^\n]*)?\n)"}( $2 == "'${BOOTDIR}'") { print $1; exit }' /etc/fstab)
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# If ${BOOTDIR} is not defined in /etc/fstab, it must be the same as /
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[ -z "${BOOTFS}" ] && BOOTFS=${ROOTFS}
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# If ${BOOTDIR} is not defined in /etc/fstab, it must be the same as /
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[ -z "${BOOTFS}" ] && BOOTFS=${ROOTFS}
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echo "${ROOTFS} ${BOOTFS}"
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echo "${ROOTFS} ${BOOTFS}"
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}
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set_bootloader_grub_read_device_map() {
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# Read GRUB device map
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[ ! -d ${TEMP} ] && mkdir ${TEMP}
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echo "quit" | grub --batch --device-map=${TEMP}/grub.map &>/dev/null
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echo "${TEMP}/grub.map"
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# Read GRUB device map
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[ ! -d ${TEMP} ] && mkdir ${TEMP}
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echo "quit" | grub --batch --device-map=${TEMP}/grub.map &>/dev/null
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echo "${TEMP}/grub.map"
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}
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set_bootloader_grub2() {
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local GRUB_CONF
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for candidate in \
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"${BOOTDIR}/grub2/grub.cfg" \
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"${BOOTDIR}/grub/grub.cfg" \
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; do
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if [[ -e "${candidate}" ]]; then
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GRUB_CONF=${candidate}
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break
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fi
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done
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if [[ -z "${GRUB_CONF}" ]]; then
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print_error 1 "Error! Grub2 configuration file does not exist, please ensure grub2 is correctly setup first."
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return 0
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fi
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print_info 1 "You can customize Grub2 parameters in /etc/default/grub."
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print_info 1 "Running grub2-mkconfig to create ${GRUB_CONF}..."
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grub2-mkconfig -o "${GRUB_CONF}"
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[ "${BUILD_RAMDISK}" -ne 0 ] && sed -i 's/ro single/ro debug/' "${GRUB_CONF}"
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local GRUB_CONF
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for candidate in \
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"${BOOTDIR}/grub2/grub.cfg" \
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"${BOOTDIR}/grub/grub.cfg" \
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; do
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if [[ -e "${candidate}" ]]; then
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GRUB_CONF=${candidate}
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break
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fi
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done
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if [[ -z "${GRUB_CONF}" ]]; then
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print_error 1 "Error! Grub2 configuration file does not exist, please ensure grub2 is correctly setup first."
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return 0
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fi
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print_info 1 "You can customize Grub2 parameters in /etc/default/grub."
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print_info 1 "Running grub2-mkconfig to create ${GRUB_CONF}..."
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grub2-mkconfig -o "${GRUB_CONF}"
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[ "${BUILD_RAMDISK}" -ne 0 ] && sed -i 's/ro single/ro debug/' "${GRUB_CONF}"
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}
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set_bootloader_grub() {
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local GRUB_CONF="${BOOTDIR}/grub/grub.conf"
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print_info 1 "Adding kernel to ${GRUB_CONF}..."
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if [ ! -e ${GRUB_CONF} ]
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then
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local GRUB_BOOTFS
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if [ -n "${BOOTFS}" ]
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then
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GRUB_BOOTFS=$BOOTFS
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else
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GRUB_BOOTFS=$(set_bootloader_read_fstab | cut -d' ' -f2)
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fi
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# Get the GRUB mapping for our device
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local GRUB_BOOT_DISK1=$(echo ${GRUB_BOOTFS} | sed -e 's#\(/dev/.\+\)[[:digit:]]\+#\1#')
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local GRUB_BOOT_DISK=$(awk '{if ($2 == "'${GRUB_BOOT_DISK1}'") {gsub(/(\(|\))/, "", $1); print $1;}}' ${TEMP}/grub.map)
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local GRUB_BOOT_PARTITION=$(($(echo ${GRUB_BOOTFS} | sed -e 's#/dev/.\+\([[:digit:]]?*\)#\1#') - 1))
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if [ -n "${GRUB_BOOT_DISK}" -a -n "${GRUB_BOOT_PARTITION}" ]
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then
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# Create grub configuration directory and file if it doesn't exist.
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[ ! -d `dirname ${GRUB_CONF}` ] && mkdir -p `dirname ${GRUB_CONF}`
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touch ${GRUB_CONF}
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echo 'default 0' >> ${GRUB_CONF}
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echo 'timeout 5' >> ${GRUB_CONF}
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echo "root (${GRUB_BOOT_DISK},${GRUB_BOOT_PARTITION})" >> ${GRUB_CONF}
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echo >> ${GRUB_CONF}
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# Add grub configuration to grub.conf
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echo "# Genkernel generated entry, see GRUB documentation for details" >> ${GRUB_CONF}
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echo "title=Gentoo Linux ($KV)" >> ${GRUB_CONF}
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echo -e "\tkernel /kernel-${KNAME}-${ARCH}-${KV} root=${GRUB_ROOTFS}" >> ${GRUB_CONF}
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if [ "${BUILD_INITRD}" = '1' ]
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then
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if [ "${PAT}" -gt '4' ]
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then
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echo -e "\tinitrd /initramfs-${KNAME}-${ARCH}-${KV}" >> ${GRUB_CONF}
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fi
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fi
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echo >> ${GRUB_CONF}
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else
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print_error 1 "Error! ${BOOTDIR}/grub/grub.conf does not exist and the correct settings can not be automatically detected."
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print_error 1 "Please manually create your ${BOOTDIR}/grub/grub.conf file."
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fi
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else
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# The grub.conf already exists, so let's try to duplicate the default entry
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if set_bootloader_grub_check_for_existing_entry "${GRUB_CONF}"; then
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print_warning 1 "An entry was already found for a kernel/initramfs with this name...skipping update"
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return 0
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fi
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set_bootloader_grub_duplicate_default "${GRUB_CONF}"
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fi
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local GRUB_CONF="${BOOTDIR}/grub/grub.conf"
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print_info 1 "Adding kernel to ${GRUB_CONF}..."
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if [ ! -e ${GRUB_CONF} ]
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then
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local GRUB_BOOTFS
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if [ -n "${BOOTFS}" ]
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then
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GRUB_BOOTFS=$BOOTFS
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else
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GRUB_BOOTFS=$(set_bootloader_read_fstab | cut -d' ' -f2)
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fi
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# Get the GRUB mapping for our device
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local GRUB_BOOT_DISK1=$(echo ${GRUB_BOOTFS} | sed -e 's#\(/dev/.\+\)[[:digit:]]\+#\1#')
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local GRUB_BOOT_DISK=$(awk '{if ($2 == "'${GRUB_BOOT_DISK1}'") {gsub(/(\(|\))/, "", $1); print $1;}}' ${TEMP}/grub.map)
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local GRUB_BOOT_PARTITION=$(($(echo ${GRUB_BOOTFS} | sed -e 's#/dev/.\+\([[:digit:]]?*\)#\1#') - 1))
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if [ -n "${GRUB_BOOT_DISK}" -a -n "${GRUB_BOOT_PARTITION}" ]
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then
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# Create grub configuration directory and file if it doesn't exist.
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[ ! -d `dirname ${GRUB_CONF}` ] && mkdir -p `dirname ${GRUB_CONF}`
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touch ${GRUB_CONF}
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echo 'default 0' >> ${GRUB_CONF}
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echo 'timeout 5' >> ${GRUB_CONF}
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echo "root (${GRUB_BOOT_DISK},${GRUB_BOOT_PARTITION})" >> ${GRUB_CONF}
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echo >> ${GRUB_CONF}
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# Add grub configuration to grub.conf
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echo "# Genkernel generated entry, see GRUB documentation for details" >> ${GRUB_CONF}
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echo "title=Gentoo Linux ($KV)" >> ${GRUB_CONF}
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echo -e "\tkernel /kernel-${KNAME}-${ARCH}-${KV} root=${GRUB_ROOTFS}" >> ${GRUB_CONF}
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if [ "${BUILD_INITRD}" = '1' ]
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then
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if [ "${PAT}" -gt '4' ]
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then
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echo -e "\tinitrd /initramfs-${KNAME}-${ARCH}-${KV}" >> ${GRUB_CONF}
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fi
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fi
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echo >> ${GRUB_CONF}
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else
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print_error 1 "Error! ${BOOTDIR}/grub/grub.conf does not exist and the correct settings can not be automatically detected."
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print_error 1 "Please manually create your ${BOOTDIR}/grub/grub.conf file."
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fi
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else
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# The grub.conf already exists, so let's try to duplicate the default entry
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if set_bootloader_grub_check_for_existing_entry "${GRUB_CONF}"; then
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print_warning 1 "An entry was already found for a kernel/initramfs with this name...skipping update"
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return 0
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fi
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set_bootloader_grub_duplicate_default "${GRUB_CONF}"
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fi
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}
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set_bootloader_grub_duplicate_default_replace_kernel_initrd() {
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sed -r -e "/^[[:space:]]*kernel/s/kernel-[[:alnum:][:punct:]]+/kernel-${KNAME}-${ARCH}-${KV}/" - |
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sed -r -e "/^[[:space:]]*initrd/s/init(rd|ramfs)-[[:alnum:][:punct:]]+/init\1-${KNAME}-${ARCH}-${KV}/"
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sed -r -e "/^[[:space:]]*kernel/s/kernel-[[:alnum:][:punct:]]+/kernel-${KNAME}-${ARCH}-${KV}/" - |
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sed -r -e "/^[[:space:]]*initrd/s/init(rd|ramfs)-[[:alnum:][:punct:]]+/init\1-${KNAME}-${ARCH}-${KV}/"
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}
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set_bootloader_grub_check_for_existing_entry() {
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local GRUB_CONF=$1
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if grep -q "^[[:space:]]*kernel[[:space:]=]*.*/kernel-${KNAME}-${ARCH}-${KV}\([[:space:]]\|$\)" "${GRUB_CONF}" &&
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grep -q "^[[:space:]]*initrd[[:space:]=]*.*/initramfs-${KNAME}-${ARCH}-${KV}\([[:space:]]\|$\)" "${GRUB_CONF}"
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then
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return 0
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fi
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return 1
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local GRUB_CONF=$1
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if grep -q "^[[:space:]]*kernel[[:space:]=]*.*/kernel-${KNAME}-${ARCH}-${KV}\([[:space:]]\|$\)" "${GRUB_CONF}" &&
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grep -q "^[[:space:]]*initrd[[:space:]=]*.*/initramfs-${KNAME}-${ARCH}-${KV}\([[:space:]]\|$\)" "${GRUB_CONF}"
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then
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return 0
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fi
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return 1
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}
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set_bootloader_grub_duplicate_default() {
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local GRUB_CONF=$1
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local GRUB_CONF_TMP="${GRUB_CONF}.tmp"
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line_count=$(wc -l < "${GRUB_CONF}")
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line_nums="$(grep -n "^title" "${GRUB_CONF}" | cut -d: -f1)"
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if [ -z "${line_nums}" ]; then
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print_error 1 "No current 'title' entries found in your grub.conf...skipping update"
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return 0
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fi
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line_nums="${line_nums} $((${line_count}+1))"
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# Find default entry
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default=$(sed -rn '/^[[:space:]]*default[[:space:]=]/s/^.*default[[:space:]=]+([[:alnum:]]+).*$/\1/p' "${GRUB_CONF}")
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local GRUB_CONF=$1
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local GRUB_CONF_TMP="${GRUB_CONF}.tmp"
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line_count=$(wc -l < "${GRUB_CONF}")
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line_nums="$(grep -n "^title" "${GRUB_CONF}" | cut -d: -f1)"
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if [ -z "${line_nums}" ]; then
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print_error 1 "No current 'title' entries found in your grub.conf...skipping update"
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return 0
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fi
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line_nums="${line_nums} $((${line_count}+1))"
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# Find default entry
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default=$(sed -rn '/^[[:space:]]*default[[:space:]=]/s/^.*default[[:space:]=]+([[:alnum:]]+).*$/\1/p' "${GRUB_CONF}")
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if [ -z "${default}" ]; then
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print_warning 1 "No default entry found...assuming 0"
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default=0
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fi
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if ! echo ${default} | grep -q '^[0-9]\+$'; then
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print_error 1 "We don't support non-numeric (such as 'saved') default values...skipping update"
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return 0
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fi
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# Grub defaults are 0 based, cut is 1 based
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# Figure out where the default entry lives
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startstop=$(echo ${line_nums} | cut -d" " -f$((${default}+1))-$((${default}+2)))
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startline=$(echo ${startstop} | cut -d" " -f1)
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stopline=$(echo ${startstop} | cut -d" " -f2)
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# Write out the bits before the default entry
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sed -n 1,$((${startline}-1))p "${GRUB_CONF}" > "${GRUB_CONF_TMP}"
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# Put in our title
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echo "title=Gentoo Linux (${KV})" >> "${GRUB_CONF_TMP}"
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# Pass the default entry (minus the title) through to the replacement function and pipe the output to GRUB_CONF_TMP
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sed -n $((${startline}+1)),$((${stopline}-1))p "${GRUB_CONF}" | set_bootloader_grub_duplicate_default_replace_kernel_initrd >> "${GRUB_CONF_TMP}"
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# Finish off with everything including the previous default entry
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sed -n ${startline},${line_count}p "${GRUB_CONF}" >> "${GRUB_CONF_TMP}"
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cp "${GRUB_CONF}" "${GRUB_CONF}.bak"
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cp "${GRUB_CONF_TMP}" "${GRUB_CONF}"
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rm "${GRUB_CONF_TMP}"
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print_warning 1 "No default entry found...assuming 0"
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default=0
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fi
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if ! echo ${default} | grep -q '^[0-9]\+$'; then
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print_error 1 "We don't support non-numeric (such as 'saved') default values...skipping update"
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return 0
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fi
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# Grub defaults are 0 based, cut is 1 based
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# Figure out where the default entry lives
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startstop=$(echo ${line_nums} | cut -d" " -f$((${default}+1))-$((${default}+2)))
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startline=$(echo ${startstop} | cut -d" " -f1)
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stopline=$(echo ${startstop} | cut -d" " -f2)
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# Write out the bits before the default entry
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sed -n 1,$((${startline}-1))p "${GRUB_CONF}" > "${GRUB_CONF_TMP}"
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# Put in our title
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echo "title=Gentoo Linux (${KV})" >> "${GRUB_CONF_TMP}"
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# Pass the default entry (minus the title) through to the replacement function and pipe the output to GRUB_CONF_TMP
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sed -n $((${startline}+1)),$((${stopline}-1))p "${GRUB_CONF}" | set_bootloader_grub_duplicate_default_replace_kernel_initrd >> "${GRUB_CONF_TMP}"
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# Finish off with everything including the previous default entry
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sed -n ${startline},${line_count}p "${GRUB_CONF}" >> "${GRUB_CONF_TMP}"
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cp "${GRUB_CONF}" "${GRUB_CONF}.bak"
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cp "${GRUB_CONF_TMP}" "${GRUB_CONF}"
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rm "${GRUB_CONF_TMP}"
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}
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File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
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Reference in new issue