#!/bin/bash

# The normal set of Linux devices is too big for embedded use
# (takes too many inodes for small filesystems).
# This script describes an adequate subset for most purposes.
# The output is in a form suitable for use by genext2fs.
# See http://packages.debian.org/genext2fs

# The arithmetic shell expansion syntax of bash is used,
# as in "$((5+$ix))".  Everything else in here should be
# compatible with all Bourne shell variants.

# Larry Doolittle   <LRDoolittle@lbl.gov>  January 2002

  echo "drwx         /dev"

  for ix in 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15; do
  echo "brw-    1,$ix  /dev/ram$ix"
  done

  # tty/console devices
  for ix in 0 1 2 3 4 5 6 7 8 9 10; do
  echo "crw-    4,$ix  /dev/tty$ix"
  done
  echo "crw-    5,0  /dev/tty"

  # Traditional ttySx
  for ix in 0 1 2 3; do
  echo "crw-    4,$((64+$ix))  /dev/ttyS$ix"
  done
 
  # Updated SA1100 builtin serial ports, for linux-2.4.2 or later
  for ix in 0 1 2; do
  echo "crw-    204,$((5+$ix))  /dev/ttySA$ix"
  done

  # console, choose one:
  echo "crw-    5,1  /dev/console"
# ln -s ttySA0 console

  # xterm needs some tty/pty pairs
  for ix in 0 1 2 3 4 5 6 7 8 9; do
  echo "crw-    2,$ix  /dev/ptyp$ix"
  echo "crw-    3,$ix  /dev/ttyp$ix"
  done

  # skip kmem and port;  what was 1,6?
  echo "crw-    1,1  /dev/mem"
# echo "crw-    1,2  /dev/kmem"
  echo "crw-    1,3  /dev/null"
# echo "crw-    1,4  /dev/port"
  echo "crw-    1,5  /dev/zero"
  echo "crw-    1,7  /dev/full"
  echo "crw-    1,8  /dev/random"
  echo "crw-    1,9  /dev/urandom"

  # what are these?  Ask Stuart.
  # echo mknod -m 640 vcs0    c 7   0;  echo chown root:root vcs0
  # echo mknod -m 644 initrd  b 0 250;  echo chown root:root initrd
  # echo mknod -m 664 qft0    c 25  0;  echo chown root:root qft0
  echo "drwx          /dev/pts"

  # mtd (Flash) support
  for ix in 0 1 2 3; do
  echo "crw-    90,$((2*$ix+0))  /dev/mtd$ix"
  echo "crw-    90,$((2*$ix+1))  /dev/mtdr$ix"
  echo "brw-    31,$ix  /dev/mtdblock$ix"
  done