u-boot/tools/mrvl_uart.sh
Konstantin Porotchkin eee4835d22 tools: Add Marvell recovery image download script
Introduce the recovery image download script for usage with
Marvell Armada SoC families (excepting 37xx family).
Since Marvell BootROM uses a sliding window in UART buffer
for detecting escape sequence during the boot, it's easier
to interrupt the normal boot flow by sending a long stream
of chained escape sequences to the serial port instead of
periodically sending a single escape sequence as it is done
by kwboot utility.
Additional benefit of using this script is the ability to
adjust the escape sequence stream length withoiut need for
compilation.

Signed-off-by: Konstantin Porotchkin <kostap@marvell.com>
Cc: Stefan Roese <sr@denx.de>
Cc: Igal Liberman <igall@marvell.com>
Signed-off-by: Stefan Roese <sr@denx.de>
2018-01-09 16:41:00 +01:00

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#!/bin/bash
#
######################################################
# Copyright (C) 2016 Marvell International Ltd.
#
# SPDX-License-Identifier: GPL-2.0
# https://spdx.org/licenses
#
# Author: Konstantin Porotchkin kostap@marvell.com
#
# Version 0.3
#
# UART recovery downloader for Armada SoCs
#
######################################################
port=$1
file=$2
speed=$3
pattern_repeat=1500
default_baudrate=115200
tmpfile=/tmp/xmodem.pattern
tools=( dd stty sx minicom )
case "$3" in
2)
fast_baudrate=230400
prefix="\xF2"
;;
4)
fast_baudrate=460800
prefix="\xF4"
;;
8)
fast_baudrate=921600
prefix="\xF8"
;;
*)
fast_baudrate=$default_baudrate
prefix="\xBB"
esac
if [[ -z "$port" || -z "$file" ]]
then
echo -e "\nMarvell recovery image downloader for Armada SoC family."
echo -e "Command syntax:"
echo -e "\t$(basename $0) <port> <file> [2|4|8]"
echo -e "\tport - serial port the target board connected to"
echo -e "\tfile - recovery boot image for target download"
echo -e "\t2|4|8 - times to increase the default serial port speed by"
echo -e "For example - load the image over ttyUSB0 @ 460800 baud:"
echo -e "$(basename $0) /dev/ttyUSB0 /tmp/flash-image.bin 4\n"
echo -e "=====WARNING====="
echo -e "- The speed-up option is not awailable in SoC families prior to A8K+"
echo -e "- This utility is not compatible with Armada 37xx SoC family\n"
fi
# Sanity checks
if [ -c "$port" ]
then
echo -e "Using device connected on serial port \"$port\""
else
echo "Wrong serial port name!"
exit 1
fi
if [ -f "$file" ]
then
echo -e "Loading flash image file \"$file\""
else
echo "File $file does not exist!"
exit 1
fi
# Verify required tools installation
for tool in ${tools[@]}
do
toolname=`which $tool`
if [ -z "$toolname" ]
then
echo -e "Missing installation of \"$tool\" --> Exiting"
exit 1
fi
done
echo -e "Recovery will run at $fast_baudrate baud"
echo -e "========================================"
if [ -f "$tmpfile" ]
then
rm -f $tmpfile
fi
# Send the escape sequence to target board using default debug port speed
stty -F $port raw ignbrk time 5 $default_baudrate
counter=0
while [ $counter -lt $pattern_repeat ]; do
echo -n -e "$prefix\x11\x22\x33\x44\x55\x66\x77" >> $tmpfile
let counter=counter+1
done
echo -en "Press the \"Reset\" button on the target board and "
echo -en "the \"Enter\" key on the host keyboard simultaneously"
read
dd if=$tmpfile of=$port &>/dev/null
# Speed up the binary image transfer
stty -F $port raw ignbrk time 5 $fast_baudrate
sx -vv $file > $port < $port
#sx-at91 $port $file
# return the port to the default speed
stty -F $port raw ignbrk time 5 $default_baudrate
# Optional - fire up Minicom
minicom -D $port