[meta-xilinx] Linux/bare-metal AMP interrupt routing

[Edward Wingate]

On Wed, Jun 10, 2015 at 1:39 PM, Edward Wingate <edwingate8 at gmail.com> wrote:
> The thing I'm contending with now is the FreeRTOS demo should be
> writing out to UART0 and I'm not seeing anything there.  When running
> standalone with a non-AMP BSP, the FreeRTOS demo works perfectly.

I took this out of the device tree and everything is working:
ps7_uart_0: serial at e0000000 { compatible = "invalid"; };

I added that thinking I don't want Linux using UART0, I want CPU1 to
use it.  But I guess Linux needs to know about it in order to forward
the interrupt.

I noticed that when I do "modprobe zynq_remoteproc" to load the CPU1
firmware and start CPU1, Linux sometimes locks up for a few minutes
afterwards (the serial terminal is not responsive).  Anyone know what
could be causing that?

When I attach the debugger and suspend CPU0, I do see it spinning in a
loop in the disassembly.  Is there a symbol file that Yocto generates
for the kernel that I can load into the debugger?  For my CPU1
application, I can load the ELF file as the symbol file and have
source level debugging.  Can I do something similar with the Linux
kernel on CPU0?