D_MEM related definitions in RTL

[DL8]

I looked at source/gpc_4t/rtl/gpc_4t_param_pkg.sv and I have a few questions about the macros there:

1. What's the size of D_MEM? I thought it was 2K, but my calculation shows it's in fact 1792 bytes (SIZE_DATA + SIZE_STACK = 0x600 + 0x100 = 0x700 = 1792)
2. Why are there macros about stack offset and size in hardware? I don't think hardware should bother with how software uses D_MEM (in fact, I don't think the concept of stack should be known to hardware)

[amichai-bd]

You are absolutely right.
This is legacy content I had from old project I did..

This should not be used, and will be removed this week.

Just this week the Core HW code/contenet was mature enough to run code and acsses memory.

I will work with the student on fixing this this week.

• the HW won't be aware of the different region withing the D_MEM.

IHW will have the full detail of the CR/SR and the size of D_MEM.

[DL8]

I created a wiki page for HW/SW interface, where we can document everything that's relevant for software. The most significant thing so far is a CR table and I added some CRs I think will be needed (feel free to add/update)

[amichai-bd]

Defently good idea to document it.
I'll give it a look and add my comments and content ideas