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Adapt tb_tk1.v tests to handle hw controlled system mode
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@agren @dehanj
agren authored and dehanj committed Nov 21, 2024
1 parent e35212f commit 8da93ec
Showing 1 changed file with 61 additions and 10 deletions.
71 changes: 61 additions & 10 deletions hw/application_fpga/core/tk1/tb/tb_tk1.v
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Original file line number Diff line number Diff line change
Expand Up @@ -27,8 +27,6 @@ module tb_tk1 ();
localparam ADDR_NAME1 = 8'h01;
localparam ADDR_VERSION = 8'h02;

localparam ADDR_SYSTEM_MODE_CTRL = 8'h08;

localparam ADDR_LED = 8'h09;
localparam LED_R_BIT = 2;
localparam LED_G_BIT = 1;
Expand Down Expand Up @@ -369,6 +367,23 @@ module tb_tk1 ();
endtask // read_check_word


//----------------------------------------------------------------
// check_equal()
//
// Check that two values are equal
//----------------------------------------------------------------
task check_equal(input [31:0] value, input [31:0] expected);
begin : check_equal
if (DEBUG) begin
if (value != expected) begin
$display("--- Error: Got 0x%x, expected 0x%x", value, expected);
error_ctr = error_ctr + 1;
end
end
end
endtask // check_equal


//----------------------------------------------------------------
// test1()
// Read out name and version.
Expand Down Expand Up @@ -440,8 +455,14 @@ module tb_tk1 ();
read_check_word(ADDR_CDI_FIRST + 6, 32'h80818283);
read_check_word(ADDR_CDI_LAST + 0, 32'h70717273);

$display("--- test3: Switch to app mode.");
write_word(ADDR_SYSTEM_MODE_CTRL, 32'hdeadbeef);
$display("--- test3: Fetch instruction from app RAM.");
tb_cpu_addr = 32'h40000000;
tb_cpu_instr = 1'h1;
tb_cpu_valid = 1'h1;
#(1 * CLK_PERIOD);
tb_cpu_addr = 32'h0;
tb_cpu_instr = 1'h0;
tb_cpu_valid = 1'h0;

$display("--- test3: Try to write CDI again.");
write_word(ADDR_CDI_FIRST + 0, 32'hfffefdfc);
Expand Down Expand Up @@ -488,8 +509,14 @@ module tb_tk1 ();
$display("--- test4: Read Blake2s entry point.");
read_check_word(ADDR_BLAKE2S, 32'hcafebabe);

$display("--- test4: Switch to app mode.");
write_word(ADDR_SYSTEM_MODE_CTRL, 32'hf00ff00f);
$display("--- test4: Fetch instruction from app RAM.");
tb_cpu_addr = 32'h40000000;
tb_cpu_instr = 1'h1;
tb_cpu_valid = 1'h1;
#(1 * CLK_PERIOD);
tb_cpu_addr = 32'h0;
tb_cpu_instr = 1'h0;
tb_cpu_valid = 1'h0;

$display("--- test4: Write Blake2s entry point again.");
write_word(ADDR_BLAKE2S, 32'hdeadbeef);
Expand Down Expand Up @@ -524,8 +551,14 @@ module tb_tk1 ();
read_check_word(ADDR_APP_START, 32'h13371337);
read_check_word(ADDR_APP_SIZE, 32'h47114711);

$display("--- test5: Switch to app mode.");
write_word(ADDR_SYSTEM_MODE_CTRL, 32'hf000000);
$display("--- test5: Fetch instruction from app RAM.");
tb_cpu_addr = 32'h40000000;
tb_cpu_instr = 1'h1;
tb_cpu_valid = 1'h1;
#(1 * CLK_PERIOD);
tb_cpu_addr = 32'h0;
tb_cpu_instr = 1'h0;
tb_cpu_valid = 1'h0;

$display("--- test5: Write app start address and size again.");
write_word(ADDR_APP_START, 32'hdeadbeef);
Expand Down Expand Up @@ -562,9 +595,17 @@ module tb_tk1 ();
"--- test6: Check value in dut ADDR_RAM_ADDR_RAND and ADDR_RAM_DATA_RAND registers.");
$display("--- test6: ram_addr_rand_reg: 0x%04x, ram_data_rand_reg: 0x%08x",
dut.ram_addr_rand, dut.ram_data_rand);
check_equal(dut.ram_addr_rand, 32'h13371337 & {15{1'b1}});
check_equal(dut.ram_data_rand, 32'h47114711);

$display("--- test6: Switch to app mode.");
write_word(ADDR_SYSTEM_MODE_CTRL, 32'hf000000);
$display("--- test6: Fetch instruction from app RAM.");
tb_cpu_addr = 32'h40000000;
tb_cpu_instr = 1'h1;
tb_cpu_valid = 1'h1;
#(1 * CLK_PERIOD);
tb_cpu_addr = 32'h0;
tb_cpu_instr = 1'h0;
tb_cpu_valid = 1'h0;

$display("--- test6: Write to ADDR_RAM_ADDR_RAND and ADDR_RAM_DATA_RAND again.");
write_word(ADDR_RAM_ADDR_RAND, 32'hdeadbeef);
Expand All @@ -574,6 +615,8 @@ module tb_tk1 ();
"--- test6: Check value in dut ADDR_RAM_ADDR_RAND and ADDR_RAM_DATA_RAND registers.");
$display("--- test6: ram_addr_rand_reg: 0x%04x, ram_data_rand_reg: 0x%08x",
dut.ram_addr_rand, dut.ram_data_rand);
check_equal(dut.ram_addr_rand, 32'h13371337 & {15{1'b1}});
check_equal(dut.ram_data_rand, 32'h47114711);

$display("--- test6: completed.");
$display("");
Expand Down Expand Up @@ -666,6 +709,12 @@ module tb_tk1 ();
$display("--- test9: cpu_addr: 0x%08x, cpu_instr: 0x%1x, cpu_valid: 0x%1x", tb_cpu_addr,
tb_cpu_instr, tb_cpu_valid);
$display("--- test9: force_trap: 0x%1x", tb_force_trap);
check_equal(tb_force_trap, 1);

$display("--- test9: restore CPU mem interface.");
tb_cpu_addr = 32'h0;
tb_cpu_instr = 1'h0;
tb_cpu_valid = 1'h0;

$display("--- test9: completed.");
$display("");
Expand All @@ -685,6 +734,8 @@ module tb_tk1 ();

$display("");
$display("--- test10: Loopback in SPI Master started.");
$display("--- test10: Reset DUT to switch to fw mode.");
reset_dut();

#(CLK_PERIOD);

Expand Down

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