scripts: add a script to convert dump from hex log to a bin file

scripts/log2bin.sh

@@ -0,0 +1,48 @@
+#!/bin/sh
+#
+# In the terminal program you use to connect to the UART port,
+# enable saving the session log files.
+#
+#   screen -L -Logfile fulldump.log /dev/ttyUSB0 115200
+#
+# Set flash memory size. Use this command for an 8MB flash chip
+#
+#   setenv flashsize 0x800000
+#
+# or this one for a 16MB flash chip
+#
+#   setenv flashsize 0x1000000
+#
+# then dump the memory contents to the console
+#
+#   setenv baseaddr 0x82000000;
+#   mw.b ${baseaddr} 0xff ${flashsize};
+#   sf probe 0; sf read ${baseaddr} 0x0 ${flashsize};
+#   md.b ${baseaddr} ${flashsize}
+#
+# Since the reading process will take a considerable amount of time
+# (literally hours), you may want to disconnect from the terminal session
+# to prevent accidental keystrokes from contaminating the output.
+#
+# Press Ctrl-a then d to disconnect the session from the active terminal.
+# Run screen -r when you need to reconnect it later, after the size of the
+# log file has stopped growing.
+#
+# Reading of an 8 MB flash memory should result in about 40 MB log file,
+# and for a 16 MB chip the file should be twice that size.
+#
+# Convert the hex dump into a binary firmware file running this script.
+#
+# 2023 Paul Philippov, paul@themactep.com
+
+rawlog=$1
+hexlog=${rawlog}.hex
+binfile=${rawlog}.bin
+
+cat $rawlog | sed -E "s/^[0-9a-f]{8}\b: //i" | \
+	sed -E "s/ {4}.{16}\r?$//" > $hexlog
+
+xxd -revert -plain $hexlog $binfile
+
+exit 0
+