-
Notifications
You must be signed in to change notification settings - Fork 0
/
input_interface_tb.v
152 lines (137 loc) · 2.37 KB
/
input_interface_tb.v
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
`timescale 1ns/1ns // define simulation timescale
// define testbench module for input_interface
module input_interface_tb();
// define tb registers and wires
reg clk_tb = 0;
reg rst_tb = 0;
reg[7:0] din_tb = 0;
reg[1:0] cmd_tb = 0;
reg engind = 0;
wire ready_w;
wire enginC_w;
wire[127:0] plain_tb;
wire[127:0] key_tb;
// define tb->input_interface connections
input_interface i_uut
(
.clk (clk_tb),
.rst_ (rst_tb),
.din (din_tb),
.cmd (cmd_tb),
.ready (ready_w),
.transformer_done (engind), // AES engine OK signal return
.key_start (enginC_w), // AES key START signal send
.plain_out (plain_tb), // -> AES engine PLAINTEXT
.key_out (key_tb) // -> AES engine KEY
);
// set periodic clock pulse every 1ns
always clk_tb = #1 ~clk_tb;
// state defines
localparam C_ID = 2'b00; // Idle state
localparam C_SP = 2'b01; // Set plaintext state
localparam C_SK = 2'b10; // Set key state
localparam C_ST = 2'b11; // Start encryption
// Enter this into the command console to add a custom radix for this
// radix define InputCommand {2'b00 "ID" -color blue, 2'b01 "SP" -color yellow, 2'b10 "SK" -color orange, 2'b11 "ST" -color red}
// radix define ReadyBusy {0 "BUSY" -color red, 1 "READY" -color blue, -default symbolic}
// set testing sequence signals
initial begin
engind = 1; // AES engine done / idle
// reset input interface
rst_tb = 0;
#2;
rst_tb = 1;
#2;
// enter plaintext
cmd_tb = C_SP;
din_tb = 8'h00;
#2;
din_tb = 8'h04;
#2;
din_tb = 8'h12;
#2;
din_tb = 8'h14;
#2;
din_tb = 8'h12;
#2;
din_tb = 8'h04;
#2;
din_tb = 8'h12;
#2;
din_tb = 8'h00;
#2;
din_tb = 8'h0C;
#2;
din_tb = 8'h00;
#2;
din_tb = 8'h13;
#2;
din_tb = 8'h11;
#2;
din_tb = 8'h08;
#2;
din_tb = 8'h23;
#2;
din_tb = 8'h19;
#2;
din_tb = 8'h19;
#2;
// Idle
cmd_tb = C_ID;
#2;
// enter key
cmd_tb = C_SK;
din_tb = 8'h24;
#2;
din_tb = 8'h75;
#2;
din_tb = 8'hA2;
#2;
din_tb = 8'hB3;
#2;
din_tb = 8'h34;
#2;
din_tb = 8'h75;
#2;
din_tb = 8'h56;
#2;
din_tb = 8'h88;
#2;
din_tb = 8'h31;
#2;
din_tb = 8'hE2;
#2;
din_tb = 8'h12;
#2;
din_tb = 8'h00;
#2;
din_tb = 8'h13;
#2;
din_tb = 8'hAA;
#2;
din_tb = 8'h54;
#2;
din_tb = 8'h87;
#2;
// Idle
cmd_tb = C_ID;
#2;
// Start command
cmd_tb = C_ST;
engind = 0; // AES engine not done / busy
#2;
#2;
#2;
#2;
#2;
#2;
#2;
#2;
engind = 1; // Engine done
#2;
// Idle
cmd_tb = C_ID;
#2;
$finish;
end
endmodule