40 lines
947 B
Bash
Executable File
40 lines
947 B
Bash
Executable File
#!/usr/bin/env bash
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set -e
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cd "$BD"
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bbver="1.33.1"
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mkdir -p initrd
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cd initrd
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wget "https://busybox.net/downloads/busybox-$bbver.tar.bz2"
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tar -xvf "busybox-$bbver.tar.bz2"
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cd "busybox-$bbver"
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make allnoconfig
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make menuconfig
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# Settings > Build static binary (no shared libs)
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# Coreutils > chroot, sleep, mkdir
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# Linux Module Utilities > modprobe
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# Linux System Utilities > switch_root
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# Shells > ash, Optimize for size instead of speed
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make
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make install
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mkdir -p ../fs
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mv _install/. ../fs
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cd ../fs
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mkdir -p "proc" "sys" "lib/modules"
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#sudo mknod -m 644 "dev/console" c 5 1
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#sudo mknod -m 644 "dev/null" c 1 3
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echo '#!/bin/sh
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mkdir -p /proc /sys /mnt/root
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mount -t proc none /proc
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mount -t sysfs none /sys
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modprobe ata_generic
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modprobe vfat
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sleep 5
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mount "/sys/dev/block/8:1" /mnt/root
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exec switch_root /mnt/root /sbin/init
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' >"bin/init"
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chmod +x "bin/init"
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find . | cpio -H newc -o | gzip -9 > ../rootfs.cpio.gz # use XZ instead?
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