hey there
I’m working on a project that requires to reconfigure fpga from linux without rebooting the OS.
my kernel version is 4.1.33-ltsi-altera
I’m trying to load a simple qsys fifo rbf file using method below:
At first Linux got stuck and then rebooted when i was trying to run the configuration program and i figured out that removing the boot service located at “/lib/systemd/system/de10-nano-fpga-init.service” would solve the problem and the configuration program seems to run without any errors, but when i run devmem to access the fifo address (ex. 0xff200000) the os gets stuck and reboots.
i have no idea what causes the problem and here is my sof to rbf configuration with compression check enabled:
here is configuration program output:
MSEL Pin Config… 0xa
FPGA State… User Phase
cfgwdth Register… 0x1
cdratio Register… 0x3
axicfgen Register… 0x0
Nconfig pull reg… 0x0
CONF DONE… 0x0
Ctrl.en?.. 0x0
Turning FPGA Off.
Setting cdratio with 0x3.
Turning FPGA On.
Loading rbf file.
EOF reached.
MSEL Pin Config… 0xa
FPGA State… User Phase
cfgwdth Register… 0x1
cdratio Register… 0x3
axicfgen Register… 0x0
Nconfig pull reg… 0x0
CONF DONE… 0x0
Ctrl.en?.. 0x0