ekeyfsm.cpp

VHDL to System C translator

#include "ekeyfsm.h"


void ekeyfsm::clocked_proc() {
  if (resetn.read() == 0) {
  current_state.write((state_type)(s0 ));
 ekey_done_cld.write((bool)(0 ));
 round_daddr_cld.write((sc_uint<4>)("0b0000"));
 round_eaddr_cld.write((sc_uint<4>)("0b0000"));
 sel_rk3_cld.write((sc_uint<2>)("0b00"));
 sel_sk_cld.write((sc_uint<4>)("0b0000"));
  } else 
if (clk.posedge()) {
  current_state.write((state_type)(next_state.read() ));
 
switch (current_state.read()) {
case s0 :
 ekey_done_cld.write((bool)(0 ));
 break;
  case s1 :
 round_eaddr_cld.write((sc_uint<4>)(round_eaddr_cld.read() + 1 ));
 break;
 case s2 :
 sel_rk3_cld.write((sc_uint<2>)(sel_rk3_cld.read() + 1 ));
 break;
 case s4 :
 if (round_eaddr_cld.read() != (sc_uint<4>)"0b1010") {
  round_eaddr_cld.write((sc_uint<4>)(round_eaddr_cld.read() + 1 ));
   
} break;
 case s5 :
 ekey_done_cld.write((bool)(1 ));
 break;
 case wr0 :
 round_daddr_cld.write((sc_uint<4>)(round_daddr_cld.read() + 1 ));
 round_eaddr_cld.write((sc_uint<4>)("0b1001" ));
 break;
 case s6 :
 sel_sk_cld.write((sc_uint<4>)(sel_sk_cld.read() + 1 ));
 break;
 case s7 :
 sel_sk_cld.write((sc_uint<4>)(sel_sk_cld.read() + 1 ));
 break;
 case s8 :
 round_daddr_cld.write((sc_uint<4>)(round_daddr_cld.read() + 1 ));
 round_eaddr_cld.write((sc_uint<4>)(round_eaddr_cld.read() - 1 ));
 break;
 case s11 :
 round_daddr_cld.write((sc_uint<4>)("0b0000"));
 round_eaddr_cld.write((sc_uint<4>)("0b0000"));
 sel_rk3_cld.write((sc_uint<2>)("0b00"));
 sel_sk_cld.write((sc_uint<4>)("0b0000"));
 break;
 default :   break;

}   
}
}
void ekeyfsm::nextstate_proc() {
  
switch (current_state.read()) {
case s0 :
 if (ld_key.read() == 1) {
  next_state.write((state_type)(s1 ));
  } else {
 next_state.write((state_type)(s0 ));

 
} break;
  case s1 :
 next_state.write((state_type)(s2 ));
 break;
 case s2 :
 if (sel_rk3_cld.read() != (sc_uint<2>)"0b11") {
  next_state.write((state_type)(s3 ));
  } else 
if (sel_rk3_cld.read() == (sc_uint<2>)"0b11") {
  next_state.write((state_type)(s4 ));
  } else {
 next_state.write((state_type)(s2 ));

 
} break;
 case s3 :
 next_state.write((state_type)(s2 ));
 break;
 case s4 :
 if (round_eaddr_cld.read() == (sc_uint<4>)"0b1010") {
  next_state.write((state_type)(s5 ));
  } else 
if (round_eaddr_cld.read() != (sc_uint<4>)"0b1010") {
  next_state.write((state_type)(s2 ));
  } else {
 next_state.write((state_type)(s4 ));

 
} break;
 case s5 :
 next_state.write((state_type)(rd10 ));
 break;
 case wr0 :
 next_state.write((state_type)(rd9 ));
 break;
 case s6 :
 if (sel_sk_cld.read()(1,0 ) == (sc_uint<2>)"0b10") {
  next_state.write((state_type)(s7 ));
  } else {
 next_state.write((state_type)(s6 ));

 
} break;
 case s7 :
 if (sel_sk_cld.read() != (sc_uint<4>)"0b1111") {
  next_state.write((state_type)(s6 ));
  } else 
if (sel_sk_cld.read() == (sc_uint<4>)"0b1111") {
  next_state.write((state_type)(s8 ));
  } else {
 next_state.write((state_type)(s7 ));

 
} break;
 case s8 :
 next_state.write((state_type)(rdx ));
 break;
 case s10 :
 next_state.write((state_type)(s11 ));
 break;
 case s11 :
 if (ld_key.read() == 1) {
  next_state.write((state_type)(s0 ));
  } else {
 next_state.write((state_type)(s11 ));

 
} break;
 case rd10 :
 next_state.write((state_type)(wr0 ));
 break;
 case rd9 :
 next_state.write((state_type)(s6 ));
 break;
 case rdx :
 if (round_daddr_cld.read() != (sc_uint<4>)"0b1010") {
  next_state.write((state_type)(s6 ));
  } else 
if (round_daddr_cld.read() == (sc_uint<4>)"0b1010") {
  next_state.write((state_type)(s10 ));
  } else {
 next_state.write((state_type)(rdx ));

 
} break;
 default : next_state.write((state_type)(s0 ));
 break;

}
}
void ekeyfsm::output_proc() {
  busy.write((bool)(1 ));
 dkey_done.write((bool)(0 ));
 dkey_mux.write((bool)(0 ));
 key_inp_mux.write((bool)(1 ));
 ld.write((bool)(0 ));
 ld_rk3.write((bool)(0 ));
 ldd.write((bool)(0 ));
 wr_dmem.write((bool)(0 ));
 
switch (current_state.read()) {
case s0 :
 key_inp_mux.write((bool)(0 ));
 busy.write((bool)(0 ));
 break;
  case s1 :
 ld.write((bool)(1 ));
 key_inp_mux.write((bool)(0 ));
 break;
 case s2 :
 ld_rk3.write((bool)(1 ));
 break;
 case s4 :
 ld.write((bool)(1 ));
 break;
 case wr0 :
 dkey_mux.write((bool)(1 ));
 wr_dmem.write((bool)(1 ));
 break;
 case s7 :
 ldd.write((bool)(1 ));
 break;
 case s8 :
 wr_dmem.write((bool)(1 ));
 break;
 case s10 :
 wr_dmem.write((bool)(1 ));
 dkey_mux.write((bool)(1 ));
 break;
 case s11 :
 dkey_done.write((bool)(1 ));
 busy.write((bool)(0 ));
 break;
 default :   break;

}
}
void ekeyfsm::comb_assignments() {

ekey_done.write((bool)(ekey_done_cld.read() ));
round_daddr.write((sc_uint<4>)(round_daddr_cld.read() ));
round_eaddr.write((sc_uint<4>)(round_eaddr_cld.read() ));
sel_rk3.write((sc_uint<2>)(sel_rk3_cld.read() ));
sel_sk.write((sc_uint<4>)(sel_sk_cld.read() ));

}