Issues HPS OpenCL Enviroment writeup.

We are using latest Kernel version.

the command "AOCL Program acl0 kernel.aocx" does not work with latest kernel version due the fact that the FPGA Bridges are controlled different in newer Kernels ....

See Source of Intels own Source located at \intelFPGA_pro\19.3\hld\board\a10soc\source\host\mmd\acl_mmd_config.cpp

// Disable communication bridges between ARM and FPGA

void ACL_MMD_CONFIG::disable_bridges()

{

int system_res = system ("echo 0 > /sys/class/fpga-bridge/fpga2hps/enable");

ACL_MMD_ASSERT(system_res != -1, "echo failed \n");

system_res = system ("echo 0 > /sys/class/fpga-bridge/hps2fpga/enable");

ACL_MMD_ASSERT(system_res != -1, "echo failed \n");

system_res = system ("echo 0 > /sys/class/fpga-bridge/lwhps2fpga/enable");

ACL_MMD_ASSERT(system_res != -1, "echo failed \n");

}

// Enable communication bridges between ARM and FPGA

void ACL_MMD_CONFIG::enable_bridges()

{

int system_res = system ("echo 1 > /sys/class/fpga-bridge/fpga2hps/enable");

ACL_MMD_ASSERT(system_res != -1, "echo failed \n");

system_res = system ("echo 1 > /sys/class/fpga-bridge/hps2fpga/enable");

ACL_MMD_ASSERT(system_res != -1, "echo failed \n");

system_res = system ("echo 1 > /sys/class/fpga-bridge/lwhps2fpga/enable");

ACL_MMD_ASSERT(system_res != -1, "echo failed \n");

}

This does not work with newer Kernels. !

there is NO /sys/class/fpga-bridges/* in Kernels after 3.X

That is the main issue why AOCL program doesnt work at all.