initrd/scripts/0-auto-detect

   1 #
   2 # By Chih-Wei Huang <cwhuang@linux.org.tw>
   3 # Last updated 2009/07/18
   4 #
   5 # License: GNU Public License
   6 # We explicitely grant the right to use the scripts
   7 # with Android-x86 project.
   8 #
   9
  10 # An auto detect function provided by kinneko
  11 auto_detect()
  12 {
  13         tmp=/tmp/dev2mod
  14         echo 'dev2mod() { while read dev; do case $dev in' > $tmp
  15         sort -r /lib/modules/`uname -r`/modules.alias | \
  16                 sed -n 's/^alias  *\([^ ]*\)  *\(.*\)/\1)modprobe \2;;/p' >> $tmp
  17         echo 'esac; done; }' >> $tmp
  18         source $tmp
  19         cat /sys/bus/*/devices/*/modalias | dev2mod
  20 }
  21
  22 # FB0DEV: framebuffer driver
  23 # LANDEV: lan driver
  24 # WIFDEV: wifi driver
  25 # SNDDEV: sound driver
  26 # CAMDEV: camera driver
  27 # PREDEV: any module the drivers depend on but can't be loaded automatically
  28 # EXTMOD: any other module
  29
  30 get_asus_info()
  31 {
  32         # common for all Eee PC models
  33         [ -c /dev/fb0 ] || FB0DEV=i915
  34         EXTMOD=eeepc-laptop
  35         PREDEV=snd-hda-codec-realtek
  36         SNDDEV=snd-hda-intel
  37         CAMDEV=uvcvideo
  38
  39         board=`cat /sys/class/dmi/id/product_name`
  40         # assume Eee PC models
  41         case "$board" in
  42                 700|701|900)
  43                         LANDEV=atl2
  44                         WIFDEV=ath5k
  45                         ;;
  46                 701SD|900SD)
  47                         LANDEV=atl1e
  48                         WIFDEV=rtl8187se
  49                         ;;
  50                 900A|904HD|1000HD)
  51                         LANDEV=atl1e
  52                         WIFDEV=ath5k
  53                         ;;
  54                 901|1000|1000H)
  55                         LANDEV=atl1e
  56                         WIFDEV=rt2860sta
  57                         ;;
  58                 ET1602*)
  59                         FB0DEV=
  60                         UVESA_MODE=${UVESA_MODE:-1366x768}
  61                         LANDEV=r8169
  62                         WIFDEV=rt2860sta
  63                         ;;
  64                 T91)
  65                         FB0DEV=
  66                         UVESA_MODE=${UVESA_MODE:-1024x600}
  67                         LANDEV=atl1e
  68                         WIFDEV=ath9k
  69                         ;;
  70                 A6VM*)
  71                         EXTMOD=asus-laptop
  72                         LANDEV=skge
  73                         WIFDEV=ipw2200
  74                         ;;
  75                 *)
  76                         LANDEV=atl1e
  77                         WIFDEV=ath9k
  78                         ;;
  79         esac
  80 }
  81
  82 get_vbox_info()
  83 {
  84         LANDEV=pcnet32
  85         SNDDEV="snd-sb16 isapnp=0 irq=5"
  86 }
  87
  88 get_qemu_info()
  89 {
  90         LANDEV=8139cp
  91         SNDDEV=snd-ens1370
  92 }
  93
  94 get_vmware_info()
  95 {
  96         LANDEV=pcnet32
  97         SNDDEV=snd-ens1371
  98 }
  99
 100 check_product()
 101 {
 102         grep -q "$1" /sys/class/dmi/id/uevent
 103 }
 104
 105 detect_hardware()
 106 {
 107         check_product ASUSTeK && get_asus_info && return 0
 108         check_product Acer.*AO && get_ao_info && return 0
 109         check_product VirtualBox && get_vbox_info && return 0
 110         check_product QEMU && get_qemu_info && return 0
 111         check_product VMware && get_vmware_info && return 0
 112 }
 113
 114 find_wifi_dev_name()
 115 {
 116         for wifi in `ls /sys/class/net`; do
 117                 w=/sys/class/net/$wifi
 118                 if [ -d $w/wireless ] || [ -d $w/phy80211 ]; then
 119                         sed -i "s|\(^ *service wpa_supplicant .*\)\(-i.*\)\( -c.*$\)|\1-i $wifi\3|g; \
 120                                 s|\(^ *service dhcpcd /system/bin/dhcpcd \)\(.*\)$|\1$wifi|g" init.rc
 121                         break
 122                 fi
 123         done
 124 }
 125
 126 load_modules()
 127 {
 128         [ -z "$AUTO" ] && detect_hardware
 129         if [ $? -eq 0 ]; then
 130                 for m in $PREDEV $EXTMOD; do
 131                         modprobe $m
 132                 done
 133                 [ -n "$FB0DEV" -a -z "$UVESA_MODE" ] && modprobe $FB0DEV
 134                 [ -n "$LANDEV" ] && modprobe $LANDEV
 135                 [ -n "$WIFDEV" ] && modprobe $WIFDEV
 136                 [ -n "$SNDDEV" ] && modprobe $SNDDEV
 137                 [ -n "$CAMDEV" ] && modprobe $CAMDEV
 138         else
 139                 auto_detect
 140         fi
 141
 142         mdev -s
 143         [ -d /proc/asound/card0 ] || modprobe snd-dummy
 144         [ -c /dev/fb0 ] || modprobe uvesafb mode_option=${UVESA_MODE:-800x600}-16 ${UVESA_OPTION:-mtrr=3 scroll=ywrap}
 145
 146         find_wifi_dev_name
 147 }