
(1) Generic Kernel

Supports all Radeon cards that firmrware exists for in /lib/firmware/radeon .
Will not display the early console boot info and Linux logo.
Display needs the modules to be installed to work . Radeon Firmware may also need to be updated for the Nothern Islands and Southern Islands cards as the format has changed from the ones included in the previous Linux installers . 

(2) Kernel a

Builtin firware support for following series Radeon video cards.
Display works without modules and the correct version of the Radeon Firmware is included in the kernel.

Radeon HD5450/HD6350
Radeon HD6450
Radeon HD6570/HD6670
Radeon HD7750/HD7770/R7-250X
Radeon R7-265

(3) Kernel b

Builtin firmware support for following Radeon series video cards.
Display works without modules and the correct version of the Radeon Firmware is included in the kernel.

Radeon HD2400-HD2900
Radeon HD3450-HD3870
Radeon HD3200/HD3300
Radeon HD4650/4670
Radeon HD4830-4890
Radeon HD5550/HD5570
Radeon HD5670

