tools/mrvl_uart.sh

   1 #!/bin/bash
   2 #
   3 ######################################################
   4 # Copyright (C) 2016 Marvell International Ltd.
   5 #
   6 # SPDX-License-Identifier:      GPL-2.0
   7 # https://spdx.org/licenses
   8 #
   9 # Author: Konstantin Porotchkin kostap@marvell.com
  10 #
  11 # Version 0.3
  12 #
  13 # UART recovery downloader for Armada SoCs
  14 #
  15 ######################################################
  16
  17 port=$1
  18 file=$2
  19 speed=$3
  20
  21 pattern_repeat=1500
  22 default_baudrate=115200
  23 tmpfile=/tmp/xmodem.pattern
  24 tools=( dd stty sx minicom )
  25
  26 case "$3" in
  27     2)
  28         fast_baudrate=230400
  29         prefix="\xF2"
  30         ;;
  31     4)
  32         fast_baudrate=460800
  33         prefix="\xF4"
  34         ;;
  35     8)
  36         fast_baudrate=921600
  37         prefix="\xF8"
  38         ;;
  39     *)
  40         fast_baudrate=$default_baudrate
  41         prefix="\xBB"
  42 esac
  43
  44 if [[ -z "$port" || -z "$file" ]]
  45 then
  46     echo -e "\nMarvell recovery image downloader for Armada SoC family."
  47     echo -e "Command syntax:"
  48     echo -e "\t$(basename $0) <port> <file> [2|4|8]"
  49     echo -e "\tport  - serial port the target board is connected to"
  50     echo -e "\tfile  - recovery boot image for target download"
  51     echo -e "\t2|4|8 - times to increase the default serial port speed by"
  52     echo -e "For example - load the image over ttyUSB0 @ 460800 baud:"
  53     echo -e "$(basename $0) /dev/ttyUSB0 /tmp/flash-image.bin 4\n"
  54     echo -e "=====WARNING====="
  55     echo -e "- The speed-up option is not available in SoC families prior to A8K+"
  56     echo -e "- This utility is not compatible with Armada 37xx SoC family\n"
  57 fi
  58
  59 # Sanity checks
  60 if [ -c "$port" ]
  61 then
  62    echo -e "Using device connected on serial port \"$port\""
  63 else
  64    echo "Wrong serial port name!"
  65    exit 1
  66 fi
  67
  68 if [ -f "$file" ]
  69 then
  70    echo -e "Loading flash image file \"$file\""
  71 else
  72    echo "File $file does not exist!"
  73    exit 1
  74 fi
  75
  76 # Verify required tools installation
  77 for tool in ${tools[@]}
  78 do
  79     toolname=`which $tool`
  80     if [ -z "$toolname" ]
  81     then
  82         echo -e "Missing installation of \"$tool\" --> Exiting"
  83         exit 1
  84     fi
  85 done
  86
  87
  88 echo -e "Recovery will run at $fast_baudrate baud"
  89 echo -e "========================================"
  90
  91 if [ -f "$tmpfile" ]
  92 then
  93     rm -f $tmpfile
  94 fi
  95
  96 # Send the escape sequence to target board using default debug port speed
  97 stty -F $port raw ignbrk time 5 $default_baudrate
  98 counter=0
  99 while [ $counter -lt $pattern_repeat ]; do
 100     echo -n -e "$prefix\x11\x22\x33\x44\x55\x66\x77" >> $tmpfile
 101     let counter=counter+1
 102 done
 103
 104 echo -en "Press the \"Reset\" button on the target board and "
 105 echo -en "the \"Enter\" key on the host keyboard simultaneously"
 106 read
 107 dd if=$tmpfile of=$port &>/dev/null
 108
 109 # Speed up the binary image transfer
 110 stty -F $port raw ignbrk time 5 $fast_baudrate
 111 sx -vv $file > $port < $port
 112 #sx-at91 $port $file
 113
 114 # Return the port to the default speed
 115 stty -F $port raw ignbrk time 5 $default_baudrate
 116
 117 # Optional - fire up Minicom
 118 minicom -D $port -b $default_baudrate
 119