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Add reg writable from FW, readable from app for blake2s entry

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Signed-off-by: Joachim Strömbergson <joachim@assured.se>
This commit is contained in:
Joachim Strömbergson 2022-12-08 16:16:15 +01:00
parent 3220d1c119
commit a48dc7cbbb
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GPG Key ID: 865B8A548EA61679
1 changed files with 47 additions and 26 deletions
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73
hw/application_fpga/core/tk1/rtl/tk1.v
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@ -61,6 +61,8 @@ module tk1(
localparam ADDR_APP_START = 8'h0c;
localparam ADDR_APP_SIZE = 8'h0d;
localparam ADDR_BLAKE2S = 8'h10;
localparam ADDR_CDI_FIRST = 8'h20;
localparam ADDR_CDI_LAST = 8'h27;
@ -100,6 +102,9 @@ module tk1(
reg [31 : 0] app_size_reg;
reg app_size_we;
reg [31 : 0] blake2s_addr_reg;
reg blake2s_addr_we;
//----------------------------------------------------------------
// Wires.
@ -150,22 +155,23 @@ module tk1(
always @ (posedge clk)
begin : reg_update
if (!reset_n) begin
switch_app_reg <= 1'h0;
led_reg <= 3'h6;
gpio1_reg <= 2'h0;
gpio2_reg <= 2'h0;
gpio3_reg <= 1'h0;
gpio4_reg <= 1'h0;
app_start_reg <= 32'h0;
app_size_reg <= 32'h0;
cdi_mem[0] <= 32'h0;
cdi_mem[1] <= 32'h0;
cdi_mem[2] <= 32'h0;
cdi_mem[3] <= 32'h0;
cdi_mem[4] <= 32'h0;
cdi_mem[5] <= 32'h0;
cdi_mem[6] <= 32'h0;
cdi_mem[7] <= 32'h0;
switch_app_reg <= 1'h0;
led_reg <= 3'h6;
gpio1_reg <= 2'h0;
gpio2_reg <= 2'h0;
gpio3_reg <= 1'h0;
gpio4_reg <= 1'h0;
app_start_reg <= 32'h0;
app_size_reg <= 32'h0;
blake2s_addr_reg <= 32'h0;
cdi_mem[0] <= 32'h0;
cdi_mem[1] <= 32'h0;
cdi_mem[2] <= 32'h0;
cdi_mem[3] <= 32'h0;
cdi_mem[4] <= 32'h0;
cdi_mem[5] <= 32'h0;
cdi_mem[6] <= 32'h0;
cdi_mem[7] <= 32'h0;
end
else begin
@ -199,6 +205,10 @@ module tk1(
app_size_reg <= write_data;
end
if (blake2s_addr_we) begin
blake2s_addr_reg <= write_data;
end
if (cdi_mem_we) begin
cdi_mem[address[2 : 0]] <= write_data;
end
@ -211,16 +221,17 @@ module tk1(
//----------------------------------------------------------------
always @*
begin : api
switch_app_we = 1'h0;
led_we = 1'h0;
gpio3_we = 1'h0;
gpio4_we = 1'h0;
app_start_we = 1'h0;
app_size_we = 1'h0;
cdi_mem_we = 1'h0;
cdi_mem_we = 1'h0;
tmp_read_data = 32'h00000000;
tmp_ready = 1'h0;
switch_app_we = 1'h0;
led_we = 1'h0;
gpio3_we = 1'h0;
gpio4_we = 1'h0;
app_start_we = 1'h0;
app_size_we = 1'h0;
blake2s_addr_we = 1'h0;
cdi_mem_we = 1'h0;
cdi_mem_we = 1'h0;
tmp_read_data = 32'h0;
tmp_ready = 1'h0;
if (cs) begin
tmp_ready = 1'h1;
@ -250,6 +261,12 @@ module tk1(
end
end
if (address == ADDR_BLAKE2S) begin
if (!switch_app_reg) begin
blake2s_addr_we = 1'h1;
end
end
if ((address >= ADDR_CDI_FIRST) && (address <= ADDR_CDI_LAST)) begin
if (!switch_app_reg) begin
cdi_mem_we = 1'h1;
@ -291,6 +308,10 @@ module tk1(
tmp_read_data = app_size_reg;
end
if (address == ADDR_BLAKE2S) begin
tmp_read_data = blake2s_addr_reg;
end
if ((address >= ADDR_CDI_FIRST) && (address <= ADDR_CDI_LAST)) begin
tmp_read_data = cdi_mem[address[2 : 0]];
end