Change the link script to optimum the RAM layout

[sgbihu]

1. Revert the DCCM change
2. Update the link script

[eriknyquist]

I thought "rwx" and "wx" were the same thing (i.e. "w" signifies both read and write). I'm not 100% sure though. Can somebody explain why this is needed?

[eriknyquist]

ping.... any answers to my question above?

[kitsunami]

This is a performance improvement that will go into the next release.

[eriknyquist]

Note that this does not actually align the location counter-- it calculates the next aligned value based on the current location counter, although the counter itself remains unaligned. I think you should do something like this instead;

. = ALIGN(4);
__dccm_end = .;

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