mirror of
https://github.com/fosslinux/live-bootstrap.git
synced 2026-03-02 01:18:08 +01:00
ee3ab501da
Without this, one of my boards fails to reboot from USB drive due to slow USB enumeration. Rootwait is not needed during the Fiwix -> Linux jump, because we use an initramfs there, and the init scripts already wait for USB drives to show up. Linux->Linux kexec, used with a custom early kernel, might need it, so add it there as well to be safe.
69 lines
1.9 KiB
Bash
69 lines
1.9 KiB
Bash
#!/bin/sh
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# SPDX-FileCopyrightText: 2024 Gábor Stefanik <netrolller.3d@gmail.com>
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#
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# SPDX-License-Identifier: GPL-3.0-or-later
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# find the physical disk name
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PHYSICAL=${DISK}
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# take care of e.g. "sda1"
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if echo "${DISK}" | grep -Eq '^[a-z]{3}[0-9]+$'
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then
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PHYSICAL=$(echo "${DISK}" | sed -E 's/^([a-z]{3})[0-9]+$/\1/')
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fi
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# take care of e.g. "mmcblk0p1"
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if echo "${DISK}" | grep -Eq '^[a-z0-9]{3,}p[0-9]+$'
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then
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PHYSICAL=$(echo "${DISK}" | sed -E 's/^([a-z0-9]{3,})p[0-9]+$/\1/')
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fi
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grub-install "/dev/${PHYSICAL}"
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cat > /boot/grub/grub.cfg <<- EOF
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set timeout=5
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set default=0
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menuentry 'Linux live-bootstrap' {
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insmod part_msdos
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set root='$(grub-probe -d /dev/${DISK} -t bios_hints | sed -e 's/ //g')'
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set gfxpayload=auto
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linux /boot/vmlinuz root=/dev/${DISK} rootwait rw $(cat /proc/cmdline)
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}
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EOF
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cat > /init <<- 'EOF'
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#!/usr/bin/bash
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cd /steps
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. ./bootstrap.cfg
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. ./env
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. ./helpers.sh
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trap 'env PATH=${PREFIX}/bin PS1="[TRAP] \w # " bash -i' ERR
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# /dev is automounted by the kernel at this point
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mount | grep '/proc' &> /dev/null || (mkdir -p /proc; mount -t proc proc /proc)
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mount | grep '/sys' &> /dev/null || (mkdir -p /sys; mount -t sysfs sysfs /sys)
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# Make /tmp a ramdisk (speeds up configure etc significantly)
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mount | grep '/tmp' &> /dev/null || (mkdir -p /tmp; mount -t tmpfs tmpfs /tmp)
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mount | grep '/dev/shm' &> /dev/null || (mkdir -p /dev/shm; mount -t tmpfs tmpfs /dev/shm)
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if test -f /swapfile; then
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swapon /swapfile
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fi
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if [ "${CHROOT}" = False ]; then
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dhcpcd --waitip=4
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fi
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env - PATH=${PREFIX}/bin PS1="\w # " setsid openvt -fec1 -- bash -i
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# ignore errors due to fstab or swapfile not existing
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swapoff -a &> /dev/null || true
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sync
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# sysrq to avoid device busy; then mount to wait for it to finish
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echo u > /proc/sysrq-trigger
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mount -o remount,ro /
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echo o > /proc/sysrq-trigger # power off
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while true; do sleep 1; done
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EOF
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chmod +x /init
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