filesystem/rc

   1 #!/bin/sh
   2
   3 #
   4 # initramfs /init (busybox ash)
   5 #
   6
   7 # color codes and some predefined texts
   8 BOLD="\033[1m"
   9 NORM="\033[0m"
  10 RED="\033[31m"
  11 GREEN="\033[32m"
  12 YELLOW="\033[33m"
  13 BLUE="\033[34m"
  14 OK="${BOLD}${GREEN}OK${NORM}"
  15 FAILED="${BOLD}${RED}FAILED${NORM}"
  16
  17 # helper functions
  18
  19 # check an exit value and print a colored status
  20 checkReturn() {
  21         if [ $? -ne 0 ]
  22         then
  23                 echo -e $FAILED
  24         else
  25                 echo -e $OK
  26         fi
  27 }
  28
  29 # search for and mount the crux media, populate a tmpfs from it,
  30 # and prepare /newroot for switch_root at the end of the script
  31 find_and_mount_media() {
  32         echo -e " ${BOLD}${BLUE}*${NORM} Searching for the CRUX media..."
  33         mkdir -p /media
  34         MMC_DEVICES="`grep -E 'mmcblk0p' /proc/partitions | awk '{ print $4 }'`"
  35         BLOCK_DEVICES="`grep -E '[sh]d' /proc/partitions | awk '{ print $4 }'`"
  36         for DEV in $MMC_DEVICES $BLOCK_DEVICES
  37         do
  38                 DEV="/dev/$DEV"
  39                 mount -r $DEV /media 2> /dev/null
  40                 if [ $? -eq 0 ]
  41                         then
  42                         echo -e -n "   ${BOLD}${GREEN}*${NORM} Found media on $DEV"
  43                         if [ -e /media/crux-media ]
  44                         then
  45                                 echo ", CRUX media."
  46                                 ln -s $DEV /dev/media
  47                                 break
  48                         else
  49                                 echo ", but it's not the CRUX media."
  50                                 umount /media
  51                         fi
  52                 else
  53                         echo -e "   ${BOLD}${YELLOW}*${NORM} No media found on $DEV."
  54                 fi
  55         done
  56
  57         # check if the media was mounted properly. if not, spawn a shell
  58         if [ ! -e /media/crux-media ]
  59         then
  60                 echo
  61                 echo -e " ${BOLD}${RED}*${NORM} The CRUX media was not properly mounted!"
  62                 echo " Spawning a shell for you to attempt to fix this problem. If"
  63                 echo " you are able to find the correct device, mount it at"
  64                 echo " /media and then log out of this shell to continue."
  65                 echo " If you are NOT able to fix the problem, installation will"
  66                 echo " not be possible."
  67                 echo
  68                 /bin/sh
  69         fi
  70
  71         # check again and stop if it's still not there
  72         if [ ! -e /media/crux-media ]
  73         then
  74                 echo
  75                 echo -e " ${BOLD}${RED}*${NORM} The CRUX media still appears not to be"
  76                 echo " found and installation will not continue."
  77                 echo
  78         else
  79                 # configure modules
  80                 MODULES="`find /media/crux/kernel -type f -name 'modules-*.tar.*' 2>/dev/null`"
  81                 if [ ! -z "$MODULES" ]; then
  82                         tar -C /tmp -xf $MODULES
  83                         cd /lib && ln -s /tmp/lib/* .
  84                         depmod
  85                 fi
  86                 # configure pkgutils
  87                 PKGUTILS="`find /media/crux/core -type f -name 'pkgutils#*.pkg.tar.*' 2>/dev/null`"
  88                 if [ ! -z "$PKGUTILS" ]; then
  89                         tar -C /tmp -xf $PKGUTILS
  90                         cd /usr/bin && ln -s /tmp/usr/bin/* .
  91                         cd /etc && ln -s /tmp/etc/* .
  92                 fi
  93         fi
  94 }
  95
  96 #
  97 # main script
  98 #
  99
 100 echo ""
 101 echo -e "${BOLD}CRUX-ARM 3.0 - ${BLUE}http://crux-arm.nu/${NORM}"
 102 echo ""
 103
 104 exec >/dev/console </dev/console 2>&1
 105
 106 # premature mount /proc since we need some rw operations
 107 echo -e -n " ${BOLD}${BLUE}*${NORM} Mounting "
 108 echo -e -n "${BOLD}${GREEN}/proc${NORM}"
 109 mount -t proc proc /proc
 110
 111 if grep -q "debug" /proc/cmdline
 112 then
 113         DEBUG=1
 114 fi
 115
 116 # dont show kernel printk messages
 117 PRINTK="`cat /proc/sys/kernel/printk`"
 118 if [ -z $DEBUG ]
 119 then
 120         echo "0" > /proc/sys/kernel/printk
 121 fi
 122
 123 echo -e ", ${BOLD}${GREEN}/sys${NORM}."
 124 mount -t sysfs sysfs /sys
 125
 126 echo -e -n " ${BOLD}${BLUE}*${NORM} Mounting filesystems... "
 127 mount -a && \
 128 mount -o remount,rw /
 129 checkReturn
 130
 131 echo -e -n " ${BOLD}${BLUE}*${NORM} Populating /dev via mdev... "
 132 mdev -s
 133 checkReturn
 134
 135 echo -e -n " ${BOLD}${BLUE}*${NORM} Registering mdev as hotplug agent... "
 136 echo "/bin/mdev" > /proc/sys/kernel/hotplug
 137 checkReturn
 138
 139 echo -e -n " ${BOLD}${BLUE}*${NORM} Creating and mounting /dev/pts... "
 140 mkdir /dev/pts
 141 mount -t devpts devpts /dev/pts
 142 checkReturn
 143
 144 echo -e -n " ${BOLD}${BLUE}*${NORM} Starting kernel log daemon... "
 145 klogd
 146 checkReturn
 147
 148 echo -e -n " ${BOLD}${BLUE}*${NORM} Setting hostname... "
 149 hostname crux
 150 checkReturn
 151
 152 echo -e -n " ${BOLD}${BLUE}*${NORM} Loading network loopback device... "
 153 ip addr add 127.0.0.1/8 dev lo broadcast + scope host && \
 154 ip link set lo up && \
 155 echo "127.0.0.1 localhost crux" > /etc/hosts
 156 checkReturn
 157
 158 echo -e -n " ${BOLD}${BLUE}*${NORM} Saving boot messages... "
 159 dmesg > /var/log/boot
 160 checkReturn
 161
 162 # run mdev again to fix issues with mmc devices. yeah, it is weird but worked
 163 mdev -s
 164
 165 echo -e " ${BOLD}${BLUE}*${NORM} Trying to find and mount the media installer..."
 166 find_and_mount_media
 167
 168 # debug could be necessary when are working with a new device and/or features
 169 # and for a weird reason you can't see any output message on the console.
 170 # You can create a debug.sh script at topdir of your install media and redirect
 171 # the output to a file to inspect later
 172 if [ ! -z $DEBUG ];
 173 then
 174         echo -e -n " ${BOLD}${BLUE}*${NORM} Loading debug script..."
 175         /media/debug.sh
 176         checkReturn
 177 fi
 178
 179 echo
 180 echo "The system is coming up. Please wait."
 181 echo
 182
 183 # restore kernel printk status
 184 echo "$PRINTK" > /proc/sys/kernel/printk
 185
 186 # End of file