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−Rvtdump is a utility that listens on a serial port, receives traces or any other
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−packets emitted by the running firmware of a GSM device in TI's RVTMUX format,
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−decodes them into readable ASCII and emits them to stdout and/or to a log file.
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−It is to be invoked as follows:
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−
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−rvtdump [options] /dev/ttyXXX
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−
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−where the sole non-option argument is the serial port it should open and listen
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−on.
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−
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−The available options are:
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−
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−-b
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−
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−	Normally the rvtdump process remains in the foreground and emits its
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−	output on stdout.  The -b option suppresses the normal output and causes
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−	rvtdump to put itself in the background: fork at startup, then have the
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−	parent exit while the child remains running.  -b is not useful and not
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−	allowed without -l.
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−
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−-B baud
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−
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−	Selects which RVTMUX serial channel baud rate our tool should listen
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−	for.  Defaults to 115200 baud, which appears to be TI's default and is
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−	correct for mokoN, leo2moko and Pirelli's fw.  Use -B 57600 for Compal's
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−	RVTMUX, the one accessible via **16379#.
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−
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−-d <file descriptor number>
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−
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−	This option is not meant for direct use by human users.  It is inserted
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−	automatically when rvtdump is launched from fc-xram as the secondary
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−	program that immediately takes over the serial channel.
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−
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−-l logfile
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−
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−	Log all received and decoded packets into the specified file in addition
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−	to (without -b) or instead of (with -b) dumping them on stdout.  Each
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−	line in the log file is also time-stamped; the timestamps are in GMT
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−	(gmtime(3)) instead of local time - Spacefalcon the Outlaw dislikes
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−	local times.