Troubleshooting "Attemting to select SDCARD ... Failed"

[skitter155]

Almost every time I attempt to boot to yocto linux on the MPFS Discovery board, HSS fails to select the SDCARD. However, rarely and unrepeatably, the board does boot successfully to linux and everything works perfectly.

I'm using the current reference design generated with a TCL file, and I'm using both the HSS_UPDATE option when synthesizing in Libero and compiling HSS from source for the board with the XML file.

I've spent hours trying to parse through the source code and compile it with more logging statements, but the code does not seem to be designed for this style of debugging. I also tried stepping through the program in the debugger, but this works very poorly as I'm not sure how to compile with different optimization levels. Overall, I have no idea how to debug the problem from the source code with SoftConsole. Where do I go from here?