Programming MSP430G2553 with Raspberry Pi 2
You can flash it via serial port, as @pjc50 suggested. Here is a part of a makefile I used for a msp430 project:

msp430-gcc -Wall -mmcu=msp430g2553 -o foo.elf some.c files.c and.c headers.h
msp430-objcopy -O ihex foo.elf foo.hex
msp430-objdump -DS foo.elf &gt; foo.lst    # produces an assembler listing, optional
python2 -m msp430.bsl.uart -e -p /dev/ttyUSB0 -PV foo.hex -r


This requires the packets msp430-gcc,-binutils,-mcu,-libc and python-msp430-tools to be installed. You will need to connect RST and TEST lines to DTR and RTS as described in slau319 or this related answer.