video initialization seems to work, further testing needed

[rpikern] / doc / notes.md

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+Raspberry Pi2 notes
+===================
+The following is not all confirmed.
+
+Memory map
+----------
+RAM is mapped to 0, 40000000 (cache-coherent) and c0000000h (uncached) in VC
+space. In the ARM address space is mapped to 0(?).
+
+I/O base is at 7e000000 in VC address space (rpi1?), and mapped to different
+ranges for each model in ARM space.
+
+Memory map summary:
+ - load address: 8000h
+ - I/O base:
+   * rpi0/1: 20000000h
+   * rpi2/3: 3f000000h
+   * rpi4:   fe000000h