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-rw-r--r--src/rtl/keywrap.v25
-rw-r--r--src/rtl/keywrap_core.v22
-rw-r--r--src/tb/tb_keywrap.v105
3 files changed, 103 insertions, 49 deletions
diff --git a/src/rtl/keywrap.v b/src/rtl/keywrap.v
index 54bc547..edfd8c3 100644
--- a/src/rtl/keywrap.v
+++ b/src/rtl/keywrap.v
@@ -74,8 +74,8 @@ module keywrap(
localparam CTRL_KEYLEN_BIT = 1;
localparam ADDR_RLEN = 8'h0c;
- localparam ADDR_A_LSB = 8'h0e;
- localparam ADDR_A_MSB = 8'h0f;
+ localparam ADDR_A0 = 8'h0e;
+ localparam ADDR_A1 = 8'h0f;
localparam ADDR_KEY0 = 8'h10;
localparam ADDR_KEY7 = 8'h17;
@@ -133,6 +133,7 @@ module keywrap(
wire core_ready;
wire core_valid;
wire [255 : 0] core_key;
+ wire [63 : 0] core_a;
wire [31 : 0] core_api_rd_data;
wire [63 : 0] core_a_result;
@@ -146,6 +147,8 @@ module keywrap(
assign core_key = {key_reg[0], key_reg[1], key_reg[2], key_reg[3],
key_reg[4], key_reg[5], key_reg[6], key_reg[7]};
+ assign core_a = {a0_reg, a1_reg};
+
//----------------------------------------------------------------
// core instantiation.
@@ -166,7 +169,7 @@ module keywrap(
.key(core_key),
.keylen(keylen_reg),
- .a_init({a1_reg, a0_reg}),
+ .a_init(core_a),
.a_result(core_a_result),
.api_cs(api_cs_reg),
@@ -244,8 +247,8 @@ module keywrap(
key_we = 1'h0;
api_cs_new = 1'h0;
api_we_new = 1'h0;
- a0_we = 1'h1;
- a1_we = 1'h1;
+ a0_we = 1'h0;
+ a1_we = 1'h0;
tmp_read_data = 32'h0;
tmp_error = 1'h0;
@@ -265,10 +268,10 @@ module keywrap(
if (address == ADDR_RLEN)
config_we = 1'h1;
- if (address == ADDR_A_LSB)
+ if (address == ADDR_A0)
a0_we = 1'h1;
- if (address == ADDR_A_MSB)
+ if (address == ADDR_A1)
a1_we = 1'h1;
if ((address >= ADDR_KEY0) && (address <= ADDR_KEY7))
@@ -295,12 +298,12 @@ module keywrap(
end
endcase // case (address)
- if (address == ADDR_A_LSB)
- tmp_read_data = core_a_result[31 : 0];
-
- if (address == ADDR_A_MSB)
+ if (address == ADDR_A0)
tmp_read_data = core_a_result[63 : 32];
+ if (address == ADDR_A1)
+ tmp_read_data = core_a_result[31 : 0];
+
if (address == ADDR_READ_DATA)
begin
api_cs_new = 1'h1;
diff --git a/src/rtl/keywrap_core.v b/src/rtl/keywrap_core.v
index aa6f0df..d476152 100644
--- a/src/rtl/keywrap_core.v
+++ b/src/rtl/keywrap_core.v
@@ -79,10 +79,11 @@ module keywrap_core (
localparam CTRL_NEXT_START = 4'h4;
localparam CTRL_NEXT_LOOP = 4'h5;
- localparam CTRL_NEXT_WAIT = 4'h6;
- localparam CTRL_NEXT_UPDATE = 4'h7;
- localparam CTRL_NEXT_CHECK = 4'h8;
- localparam CTRL_NEXT_FINALIZE = 4'h9;
+ localparam CTRL_NEXT_WAIT0 = 4'h6;
+ localparam CTRL_NEXT_WAIT = 4'h7;
+ localparam CTRL_NEXT_UPDATE = 4'h9;
+ localparam CTRL_NEXT_CHECK = 4'h9;
+ localparam CTRL_NEXT_FINALIZE = 4'ha;
//----------------------------------------------------------------
@@ -195,8 +196,8 @@ module keywrap_core (
if (!reset_n)
begin
a_reg <= 64'h0;
- ready_reg <= 1'h0;
- valid_reg <= 1'h0;
+ ready_reg <= 1'h1;
+ valid_reg <= 1'h1;
api_addr_ctr_reg <= 14'h0;
block_ctr_reg <= 13'h0;
iteration_ctr_reg <= 3'h0;
@@ -386,6 +387,8 @@ module keywrap_core (
begin
ready_new = 1'h0;
ready_we = 1'h1;
+ valid_new = 1'h0;
+ valid_we = 1'h1;
keywrap_core_ctrl_new = CTRL_NEXT_START;
keywrap_core_ctrl_we = 1'h1;
end
@@ -430,6 +433,13 @@ module keywrap_core (
end
+ CTRL_NEXT_WAIT0:
+ begin
+ keywrap_core_ctrl_new = CTRL_NEXT_WAIT;
+ keywrap_core_ctrl_we = 1'h1;
+ end
+
+
CTRL_NEXT_WAIT:
begin
if (aes_ready)
diff --git a/src/tb/tb_keywrap.v b/src/tb/tb_keywrap.v
index 04efa44..8a8344b 100644
--- a/src/tb/tb_keywrap.v
+++ b/src/tb/tb_keywrap.v
@@ -39,7 +39,9 @@
module tb_keywrap();
- parameter DEBUG = 0;
+ parameter DEBUG = 1;
+ parameter DUMP_TOP = 1;
+ parameter DUMP_CORE = 1;
parameter CLK_HALF_PERIOD = 1;
parameter CLK_PERIOD = 2 * CLK_HALF_PERIOD;
@@ -62,8 +64,8 @@ module tb_keywrap();
localparam CTRL_KEYLEN_BIT = 1;
localparam ADDR_RLEN = 8'h0c;
- localparam ADDR_A_LSB = 8'h0e;
- localparam ADDR_A_MSB = 8'h0f;
+ localparam ADDR_A0 = 8'h0e;
+ localparam ADDR_A1 = 8'h0f;
localparam ADDR_KEY0 = 8'h10;
localparam ADDR_KEY1 = 8'h11;
@@ -135,25 +137,12 @@ module tb_keywrap();
always
begin : sys_monitor
cycle_ctr = cycle_ctr + 1;
-
+ if (DEBUG)
+ dump_dut_state();
#(CLK_PERIOD);
end
- //----------------------------------------------------------------
- // dump_mem()
- //
- // Dump the n first memory positions in the dut internal memory.
- //----------------------------------------------------------------
- task dump_mem(integer n);
- begin : dump_mem
- integer i;
- for (i = 0 ; i < n ; i = i + 2)
- $display("mem0[0x%06x] = 0x%08x mem1[0x%06x] = 0x%08x",
- i, dut.core.mem.mem0[i], i, dut.core.mem.mem1[i]);
- end
- endtask // dump_mem
-
//----------------------------------------------------------------
// read_word()
@@ -227,6 +216,22 @@ module tb_keywrap();
//----------------------------------------------------------------
+ // dump_mem()
+ //
+ // Dump the n first memory positions in the dut internal memory.
+ //----------------------------------------------------------------
+ task dump_mem(integer n);
+ begin : dump_mem
+ integer i;
+ for (i = 0 ; i < n ; i = i + 2)
+ $display("mem0[0x%06x] = 0x%08x mem1[0x%06x] = 0x%08x",
+ i, dut.core.mem.mem0[i], i, dut.core.mem.mem1[i]);
+ $display("");
+ end
+ endtask // dump_mem
+
+
+ //----------------------------------------------------------------
// dump_dut_state()
//
// Dump the state of the dump when needed.
@@ -236,6 +241,28 @@ module tb_keywrap();
$display("cycle: 0x%016x", cycle_ctr);
$display("State of DUT");
$display("------------");
+
+ if (DUMP_TOP)
+ begin
+ $display("top level state:");
+ $display("init_reg = 0x%x next_reg = 0x%x", dut.init_reg, dut.next_reg);
+ $display("endec_reg = 0x%x keylen_reg = 0x%x", dut.encdec_reg, dut.keylen_reg);
+ $display("rlen_reg = 0x%06x", dut.rlen_reg);
+ $display("a0_reg = 0x%08x a1_reg = 0x%08x", dut.a0_reg, dut.a1_reg);
+ $display("");
+ end
+
+ if (DUMP_CORE)
+ begin
+ $display("core level state:");
+ $display("init = 0x%0x next = 0x%0x ready = 0x%0x valid = 0x%0x",
+ dut.core.init, dut.core.next, dut.core.ready, dut.core.valid);
+ $display("key = 0x%0x", dut.core.key);
+ $display("a_init = 0x%0x a_result = 0x%0x", dut.core.a_init, dut.core.a_result);
+ $display("a_reg = 0x%0x", dut.core.a_reg);
+ $display("keywrap_core_ctrl_reg = 0x%0x", dut.core.keywrap_core_ctrl_reg);
+ end
+
$display("");
end
endtask // dump_dut_state
@@ -314,26 +341,31 @@ module tb_keywrap();
// Write key and keylength, we also want to encrypt/wrap.
- write_word(ADDR_KEY3, 32'hc03db3cc);
- write_word(ADDR_KEY2, 32'h1416dcd1);
- write_word(ADDR_KEY1, 32'hc069a195);
- write_word(ADDR_KEY0, 32'ha8d77e3d);
+ write_word(ADDR_KEY0, 32'hc03db3cc);
+ write_word(ADDR_KEY1, 32'h1416dcd1);
+ write_word(ADDR_KEY2, 32'hc069a195);
+ write_word(ADDR_KEY3, 32'ha8d77e3d);
write_word(ADDR_CONFIG, 32'h00000001);
-
- // Write magic words to the A state regs.
- // Also set the rlen.
- write_word(ADDR_A_LSB, 32'h0000001f);
- write_word(ADDR_A_MSB, 32'ha65959a6);
- write_word(ADDR_RLEN, 32'h00000004);
+ $display("* State after key has been set:");
+ dump_dut_state();
// Initialize the AES engine and reset counters.
// Wait for init to complete.
+ $display("* Trying to initialize.");
write_word(ADDR_CTRL, 32'h00000001);
+ #(2 * CLK_PERIOD);
wait_ready();
+ $display("* Init should be done.");
+ // Write magic words to the A state regs.
+ // Also set the rlen.
+ write_word(ADDR_A0, 32'ha65959a6);
+ write_word(ADDR_A1, 32'h0000001f);
+ write_word(ADDR_RLEN, 32'h00000004);
+
// Write the R blocks to be processed.
write_word(ADDR_WRITE_DATA, 32'hcdda4200);
write_word(ADDR_WRITE_DATA, 32'h46f87f58);
@@ -347,19 +379,28 @@ module tb_keywrap();
write_word(ADDR_WRITE_DATA, 32'h45a28800);
write_word(ADDR_WRITE_DATA, 32'h5f37a27d);
+ $display("* Contents of memory and dut before wrap processing:");
dump_mem(6);
// Start wrapping and wait for wrap to complete.
+ $display("* Trying to start processing.");
write_word(ADDR_CTRL, 32'h00000002);
+ #(2 * CLK_PERIOD);
wait_ready();
+ $display("* Processing should be done.");
+
+
+ $display("Contents of memory and dut after wrap processing:");
+ dump_mem(6);
+ dump_dut_state();
// Read and display the A registers.
- read_word(ADDR_A_LSB);
- $display("A LSB after wrap: 0x%08x", read_data);
- read_word(ADDR_A_MSB);
- $display("A MSB after wrap: 0x%08x", read_data);
+ read_word(ADDR_A0);
+ $display("A0 after wrap: 0x%08x", read_data);
+ read_word(ADDR_A1);
+ $display("A1 after wrap: 0x%08x", read_data);
// Read and display the R blocks that has been processed.
for (i = 0 ; i < 8 ; i = i + 1)
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-25 18:16:14 +0000