As of today there's initial support in Coreboot for handling AMD Kabini APUs.
Through a series of commits today to Coreboot, initial support for AMD Kabini APUs is present, courtesy of Advanced Micro Devices and Sage Electronics Engineering. AMD Kabini is the low-power APU targeting sub-notebook/netbook/ultra-thin devices and based upon AMD's Jaguar micro-architecture.
Jaguar, also known as AMD Family 16h, features new low-power states, new CPU instruction set extensions (SSE 4.2, AES, AVX, BMI, etc), +10% frequency boosts, 128-bit FPU data-path width, enhanced cache prefetchers, and numerous other improvements over existing Bobcat APUs.
The Coreboot support today for AMD's Kabini comes in the form of the AGESA wrapper
, the Northbridge wrapper
, and modified Hudson Southbridge wrapper