Hello Bruno,
I am sorry that I don't know what you mean by bootstrap control that you need in your hardware.
I made my HVKIT similar to TI HVKIT, I only changed the IPM and used similar components, with similar voltage filter pole and voltage scale (please see InstaSPIN MOTION-InstaSPIN FOC User Guide - spruhj1c- about this hardware requirement).
About hal.c and hal.h, if you only want to run the motorware project without any additional function (for example SCI, SPI), then you don't need to change anything. But please make sure that your launchpad connection follows the ControlCard F28027 connection.
Best regards,
Maria