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−You are looking at the top level of the freecalypso-sw source code tree.
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−The subtrees of this source tree are as follows:
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−gsm-fw		This tree contains the early beginnings of my (Michael
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−		Spacefalcon's) attempt to recreate TI's GSM firmware suite for
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−		modems and basic phones, consisting of Nucleus RTOS, RiViera
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−		and GPF frameworks, TI's BSP/driver and L1 code, Condat G23
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−		GSM/GPRS protocol stack, AT command interpreter and UI layers.
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−		The current code is in the earliest embryonic stages of
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−		development, and does not do anything useful yet.
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−loadtools	The suite of tools which run on a development host machine
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−		(normally PC/Linux desktop or laptop) and communicate with
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−		Calypso targets.  Starting from the Calypso ROM bootloader,
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−		these tools allow you to peek and poke registers, read and
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−		program flash, and load and execute experimental code in IRAM
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−		or XRAM.
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−rvinterf	In common with TI's original fw, FreeCalypso GSM fw implements
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−		the so-called RiViera serial MUX, which is a binary packet
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−		protocol for multiplexing many kinds of debug and development
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−		traffic over just one available physical serial port.  This
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−		rvinterf directory contains the early beginnings of our suite
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−		of tools for connecting to this RV serial interface, supporting
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−		both our own gsm-fw as well as some existing proprietary
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−		firmwares to the extent to which they are compatible.
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−target-utils	These are utilities which run on Calypso targets, but which are
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−		independent of Nucleus, of any other RTOS, and of any larger
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−		firmware suite, i.e., totally standalone.  The two current
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−		utilities are loadagent, which is common for all currently
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−		supported Calypso targets and is required in order to use
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−		fc-loadtool or fc-xram (see loadtools), and pirexplore - the
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−		latter is a hardware exploration utility specific to the
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−		Pirelli DP-L10 target.
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−toolchain	Scripts and patches for building the gcc+binutils toolchain
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−		targeting ARM7, the CPU core of the Calypso GSM/GPRS baseband
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−		processor.  You'll need to build and install this toolchain
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−		first before you can build gsm-fw or target-utils.