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#!/bin/bash
CONFIG=/etc/efistub.conf
if [[ ! -s "${CONFIG}" ]];then
echo -e "\033[31m Error: config does not exist or empty. \033[0m" >&2
exit -1
fi
startBootnum=$(eval echo $(awk -F: '/^start\-bootnum/{print $2}' "${CONFIG}"))
disk=$(eval echo $(awk -F: '/^disk/{print $2}' "${CONFIG}"))
partnum=$(eval echo $(awk -F: '/^partnum/{print $2}' "${CONFIG}"))
defaultCmdline=$(eval echo $(awk -F: '/^default-cmdline/{print $2}' "${CONFIG}"))
if [ -z "${startBootnum}" ];then
echo -e "\033[31m Error: No start-bootnum specified. \033[0m" >&2
exit -2
fi
if [ -z "${disk}" ];then
echo -e "\033[31m Error: No disk specified. \033[0m" >&2
exit -2
fi
if [ -z "${partnum}" ];then
echo -e "\033[31m Error: No partnum specified. \033[0m" >&2
exit -2
fi
if [ -z "${defaultCmdline}" ];then
echo -e "\033[31m Error: No default-cmdline specified. \033[0m" >&2
exit -2
fi
if [[ -s "/boot/intel-ucode.img" ]];then
ucode="initrd=\\intel-ucode.img"
echo -e "\e[32m Found intel ucode. \e[0m"
fi
if [[ -s "/boot/amd-ucode.img" ]];then
ucode="${ucode} initrd=\\amd-ucode.img"
echo -e "\e[32m Found amd ucode. \e[0m"
fi
bootnum="${startBootnum}"
for i in /boot/vmlinuz*
do
if [[ ${i} == "/boot/vmlinuz" ]];then
kernel="default"
else
kernel=${i: 14}
fi
configEach=/etc/efistub.d/${kernel}.conf
if [[ -s "${configEach}" ]];then
cmdline=$(eval echo $(awk -F: '/^cmdline/{print $2}' "${configEach}"))
label=$(eval echo $(awk -F: '/^label/{print $2}' "${configEach}"))
if [ -z "${label}" ];then
label=${i: 14}
echo -e "\033[33m Warning: ${configEach}: No label specified. Using ${kernel}. \033[0m"
fi
if [ -z "${cmdline}" ];then
echo -e "\033[31m Error: ${configEach}: No cmdline specified. \033[0m" >&2
exit -3
fi
else
cmdline="${defaultCmdline}"
label=${kernel}
echo -e "\033[33m Warning: No config for &i. Using defaults. \033[0m"
fi
initramfs="initramfs-${kernel}.img"
if [ ! -s "/boot/${initramfs}" ];then
echo -e "\033[31m Error: ${initramfs} does not exist or empty. \033[0m" >&2
exit -4
fi
cmdline="${cmdline} ${ucode} initrd=\\${initramfs}"
efibootmgr -q -b ${bootnum} -B
efibootmgr -q -b ${bootnum} --disk ${disk} --part ${partnum} --create --label "${label}" --loader ${i: 6} --unicode "${cmdline}"
echo "Updated ${i: 6}. Label: ${label}, cmdline: ${cmdline}"
bootnum=$(expr ${bootnum} + 1)
done
echo -e "\e[32m Complete! \e[0m"
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