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Altera_Forum's avatar
Altera_Forum
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11 years ago

ACP port under Linux

Hi, Is there any trick to using the ACP port from FPGA under Linux (3.9)? I'm setting the f2h AR & AW CACHE/PROT/USER by hand, post-qsys, but don't see any indication that the SCU cares at all...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

Thanks for your reply.

I have a working system, using yocto I can build the bootloader, kernel image, device tree and the file system. Is the GnuRadio ACP port configuration similar for the Altera devices?

I have configures the AXI port attributes as you said and also sending to the HDL module the physical address | 0x80000000, but I am getting a kernel panic after starting writing to that memory location, did you configure something for the ACP port before using it?