This gets you today (2014 Dec 29) to section 15.3 of “ARM System Developer’s Guide” by Sloss, Symes & Vright. That paragraph tells of the switch to real caches in the ARM.
Samsung to discontinue production of Galaxy Alpha which uses Cortex-A15 & quad-core 1.3 GHz Cortex-A7. In its place is the Galaxy A5 with a Qualcomm Snapdragon processor.
Table of ARM cores and architectures
List of ARM microarchitectures

If I understand correctly you do not need to worry about the commands that the Micro-Controller obeys because they are ‘firmware’ instead of ‘software’.