#!/bin/sh

export PATH=/bin:/sbin:/usr/bin:/usr/sbin:/mnt/root/bin:/mnt/root/sbin:/mnt/root
mount -t proc proc /proc
mount -t sysfs sysfs /sys
mount -t devpts devpts /dev/pts
  
ifconfig lo 127.0.0.1 up
route add -net 127.0.0.0 netmask 255.0.0.0 lo
xuartctl --server

# If the RESET switch is being pushed, 
# set the CONSOLE to the DB9 port (/dev/pts/#)
eval `ts7500ctl --getdio`
let dio9="(dio >> 9) & 0x1"
XCONSOLE=0

if [ "$dio9" == "1" ]; then
  export CONSOLE=/dev/ttyS0
else
  eval `xuartctl --server --port 0 </dev/null 2>&1`
  if [ "$ttyname" == "" ]; then
    export CONSOLE=/dev/ttyS0
  else
    export CONSOLE=$ttyname
    XCONSOLE=1
    # If the RESET switch is being pushed, wait until released
    while [ "$dio9" == "0" ]; do
    	eval `ts7500ctl --getdio`
    	let dio9="(dio >> 9) & 0x1"
    done
  fi
fi
                
let x=`devmem 0x79000040`
sec=$((x / 100000))
tenths=$((x % 100000 / 1000))
export BOOTTIME=`printf "%d.%02d" $sec $tenths`

setconsole $CONSOLE
stty -F $CONSOLE ospeed 115200 sane > /dev/null 2>&1
hostname ts7500                                   
ts7500ctl --resetswitchon --setrng --getrtc --autofeed 2 -d
ts7500ctl --loadfpga=ts7500_bitstream.vme.gz

# Get the model # and boot device (NAND, mSD, SPI flash)
eval `ts7500ctl --info`
export bootdev model

# If this is a 4500/8200, we need to set DIO-7 HIGH
# (EN_USB_5V) for the USB's to work
if [ "$model" = "0x4500" ]; then
	eval `ts7500ctl --getdioreg`
	let diodir="diodir | (1<<7)"
	let dio_out="dio_out | (1<<7)"
	ts7500ctl --setdio $dio_out --setdiodir $diodir
fi

# If there is a USB drive, mount it
# If it has 'tsinit', execute it
# (this allows software auto-update)                                
devmem 0xc8000004 32 0x106
devmem 0xcc000060 32 0x1
let x=`devmem 0xcc000068`
let y=`devmem 0xcc000064`
x=$(((x | y) & 0x1))
if [ "$x" -eq 1 ]; then
  (
        ts7500ctl --redledon
	mount -t tmpfs tmpfs /lib/modules
	tar -x -z -f /modules.tar.gz -C /
	modprobe scsi_mod
	modprobe sd_mod
	modprobe usbcore
	modprobe ehci_hcd
	modprobe usb_storage
	modprobe smsc95xx
	modprobe ohci_hcd
	umount /lib/modules
	x=0
	while [ "$x" -lt 150 -a ! -e /sys/block/sda ]; do
		x=$((x+1))
		sleep .1
	done
	mount -o ro /dev/sda1 /mnt/usbdev
	if [ -x /mnt/usbdev/tsinit ]; then 
		/mnt/usbdev/tsinit <$CONSOLE >$CONSOLE 2>&1
	fi
	umount /mnt/usbdev
	ts7500ctl --redledoff
  ) &
fi

(
  mount -t tmpfs none /dev/shm
  ifconfig eth0 192.168.0.50
  telnetd
  mount -t tmpfs tmpfs /tmp

  # If booted from NAND, mount NAND's Linux partition
  # If booted from mSD, mount mSD's Linux partition
    
  # Model: 7550, 7551, etc. (NOT 7500) -- these boards have NAND
  if [ "$model" != "0x7500" ]; then
    nandctl -X -z 131072 --nbdserver lun0:disc,lun0:part1,lun0:part2,lun0:part3,lun0:part4
    nbd-client 127.0.0.1 7525 /dev/nbd0
    nbd-client 127.0.0.1 7526 /dev/nbd1
    nbd-client 127.0.0.1 7527 /dev/nbd2
    nbd-client 127.0.0.1 7528 /dev/nbd3
    nbd-client 127.0.0.1 7529 /dev/nbd4
    if [ "$bootdev" == "0x0" ]; then
      mount -oro /dev/nbd3 /mnt/root
    fi
  fi
 
  # Model: 7500 or 7551, 7552, etc.  (NOT 7550) -- these boards have mSD
  if [ "$model" != "0x7550" ]; then
    eval `sdctl -z 65536 --nbdserver lun0:disc,lun0:part1,lun0:part2,lun0:part3,lun0:part4 2>&1`
    if [ "$cardsize_sectors" == "0" ]; then
      killall sdctl >> $CONSOLE 2>&1
    else
      nbd-client 127.0.0.1 7500 /dev/nbd5
      nbd-client 127.0.0.1 7501 /dev/nbd6
      nbd-client 127.0.0.1 7502 /dev/nbd7
      nbd-client 127.0.0.1 7503 /dev/nbd8
      nbd-client 127.0.0.1 7504 /dev/nbd9
      if [ "$bootdev" == "0x1" ]; then
        mount -oro /dev/nbd9 /mnt/root
      fi
    fi
  fi

  # Software auto-update  
  if [ -x /mnt/root/tsinit ]; then
    /mnt/root/tsinit $XCONSOLE < $CONSOLE > $CONSOLE 2>&1
  fi
  
) </dev/null >/dev/null 2>&1 &

(
  export ENV=/shinit
  exec setsid cttyhack /bin/sh -i
) <$CONSOLE >$CONSOLE 2>&1
wait

if [ -e /mnt/root/sbin/init ]; then
  killall busybox telnetd >/dev/null 2>&1

  cd /mnt/root
  pivot_root . ./initrd
  ./bin/mount -n --move ./initrd/sys ./sys
  ./bin/mount -n --move ./initrd/proc ./proc
  exec ./usr/sbin/chroot . ./sbin/init < .$CONSOLE > .$CONSOLE 2>&1
fi