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https://github.com/troglobit/finit.git
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49 lines
1.4 KiB
Plaintext
49 lines
1.4 KiB
Plaintext
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Eeepc "fastinit" reimplementations
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----------------------------------
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finit.c is a reimplementation of the Asus Eeepc fastinit program based
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on its library calls. It tries to be an accurate re-creation and keeps
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the original bugs and lack of optimization.
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finit-mod.c is a fixed/improved version of finit.c.
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finit-alt.c is a fixed/improved version of finit.c for alternative Linux
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distributions running on the Eeepc (previously ffinit.c). Currently able
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to boot unmodified Mandriva Linux.
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* Eeepc boot process
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The essential steps in the boot process carried out in initramfs are:
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ROOT=`sed 's!.*root=\([^ ]*\).*!\1!' < /proc/cmdline`
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mount -t proc proc /proc
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mount -t ext2 -o ro $ROOT /mnt-system
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mount -t ext3 -o rw /dev/sda2 /mnt-user
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mount -t unionfs -o dirs=/mnt-user=rw:/mnt-system=ro unionfs /mnt
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mount --move /mnt-system /mnt/mnt
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umount -l /mnt-user
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umount /proc
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exec switch_root /mnt /sbin/fastinit "$@" </mnt/dev/console >/mnt/dev/console
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If mounting the root filesystem fails, execute a maintenance shell. If
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mounting the user filesystem fails, fsck and reboot.
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* Utilities available in the Eeepc initramfs busybox:
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[ cat cp cut dd
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dmesg echo env expr false
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grep insmod ln losetup ls
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mdev mkdir mknod mount mv
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pivot_root realpath rm rmmod sed
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sh sleep switch_root test true
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umount vi
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* Devices in the Eeepc initramfs /dev:
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console fb null ram0 sda1 sda2 sda3 sr0 tty0
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