Flashing C6747/DA830 AudioSample with BIOS6

>>part of the L1D is used by the bootloader during boot time for holding data (stack, boot data structure).

Just remembered this from the following post:

http://e2e.ti.com/support/dsp/omap_applications_processors/int_omapl1x_dsps/f/116/t/50772.aspx

Is L1D being used by BIOS6 and hence conflicting with the bootloader? 

The customer found that a simple UART example was able to boot with BIOS6. But the question still remains,

How do you Flash C6747/DA830 AudioSample with BIOS6?

Not sure where to start in answering my own post.

We were able to get a non-SDRAM version of BIOS6 (all L2 and L3 memory and even BIOS in the ROM) audioSample to boot but not play audio.  It flipped an LED.

The audio version was getting stuck in line 3388 of J:\pspdrivers_02_00_01\packages\ti\psp\mcasp\src\mcasp.c  (copied below).

Looks like some kind of clock timing/sequencing error.

Having learned what we did, I just tried rebuilding and running with BIOS in the RAM.  And am now seeing code get stuck early in the bootloader. SDRAM is not even getting initialized by bootloader/AISGen and of course never get to main.

Got plenty of examples if anyone wants to investigate.  All code works fine in CCSv4. 

Just noticed differences in audioSample_main.c whether BIOS5 or BIOS6. 

The  Psc_ModuleClkCtrl(psc1, PSC_MCASP1_LPSC, Psc_moduleClkCtrl_ENABLE, &eb); function is called as a Audio_Startup_InitFxn() in BIOS6. 

While in BIOS5, it is part of audioUserMcaspInit().