SysCtrl internal access memory map

[hegza]

We noticed that SysCtrl also has some peculiarities with regard to its memory map. Example: SysCtrl private bank.

• When SysCtrl is the initiator, it uses the "Internal Address Map" (0x1c00_0000)
• When anything but HPC is the initiator, the "External Address Map" is to be used (0xff94_2000)
• When HPC is the initiator, we use both externals at the same time, i.e. SysCtrl external memory map + HPC external access bit (0x1_ff94_2000).

Internal Excel describing the internal & external memory maps.

[hegza]

Impacts #41