If you are using the C2000 Support Package, we are generating all required initialization code. During the model build, the executable will be generated with all initialization and application code included.
Generated file MW_c28xx_board.c will have all initialization code for the processor. We are calling some of the TI functions (available in controlSUITE) also to do the initialization. Other init code will be generated in the modelname.c file as modelname_initialize function.