SceSblSsSmComm

SceSblSsSmComm is a kernel module that is primary responsible for sending F00D commands.

sceSblSmCommStopSmForKernel
This function calls sceSblSmCommCallFuncForKernel with  as   and then calls sceSblSmSchedProxyWaitForKernel.

sceSblSmCommStartSmFromFileForKernel
num1 might be command ID. For exemple in 0.940 ss_mgr.skprx, when loading "os0:sm/qaf_sm.self", num1 = -1, 0, 1, 4, 5, 6, 7.

sceSblSmCommCallFuncForKernel
sm_comm_context is described more here

f00d_resp comes from Request Buffer from offset 0x08

gc_param is generated by game card and has value 0x01

SceSblSsSmComm
This library is present on 1.69 but is not present on 3.60.