This is a tiny (~20K uncompressed static!) init binary designed to run in an
initramfs.  

It runs standalone so no other executables are required in the initramfs.  
Upon boot it attempts to mount all connected disks and scans them looking for 
rootfs images.  It then displays a menu allowing the user to select one with
the d-pad.

--------
Building
--------

Grab a klibc tarball and unpack it:

    wget http://www.kernel.org/pub/linux/libs/klibc/klibc-1.4.tar.bz2
    tar -jxvf klibc-1.4.tar.bz2
    cd klibc-1.4.tar.bz2

Put hndinit in the usr directory:

    mv ..../hndinit usr

Adjust the klibc configuration for PXA devices:

    cp usr/hndinit/klibc-config .config
    touch .config # to update timestamp
    cp usr/hndinit/MCONFIG usr/klibc/arch/arm

Tell klibc where to find your linux tree by linux to it:

    ln -s ..../linux linux

Setup cross compilation environment variables:

    export CROSS_COMPILE=arm-softfloat-linux-gnueabi-
    export KLIBCARCH=arm

Add usr/hndinit to the $(obj)/all target in the root Kbuild:

    $(obj)/all:
        ...
        $(Q)$(MAKE) $(klibc)=usr/hndinit

Build it!

    make

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Usage
-----

Create a file called initramfs_list containing something like the following:

    dir /dev 0755 0 0
    nod /dev/console 0600 0 0 c 5 1
    nod /dev/loop0 0600 0 0 b 7 0
    nod /dev/loop1 0600 0 0 b 7 1
    nod /dev/loop2 0600 0 0 b 7 2
    nod /dev/loop3 0600 0 0 b 7 3
    nod /dev/loop4 0600 0 0 b 7 4
    nod /dev/loop5 0600 0 0 b 7 5
    nod /dev/loop6 0600 0 0 b 7 6
    nod /dev/loop7 0600 0 0 b 7 7
    dir /root 0700 0 0
    dir /sbin 0755 0 0
    dir /proc 0755 0 0
    dir /mnt 0755 0 0
    dir /sys 0755 0 0
    file /init ..../klibc/usr/hndinit/static/hndinit 0755 0 0

Fix the path in the last line to the hndinit binary. In your kernel config 
specify the initramfs_list file as your initramfs source under
"General Setup".

Note: hndinit will automatically create device nodes for everything
      in /proc/partitions.