[GSoC] psim BSP memory layout

[Hesham Moustafa]

Hi,

I want to understand how memory layout works at psim BSP. I studied linkcmd
for psim and found that there are 16MB for RAM (starting at 0x00000000) and
another 16MB for psim-registers (starting at 0x0C00000). all sections goes
to psim-registers memory with noload (why?) directive. What exactly
psim-registers area represents ? and what goes into RAM area ? Also where
PCI I/O map starts and end and how PCI map relates to BAT ?

Thanks,
Hesham
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