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zcash-fpga
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bugfix for timeout

This commit is contained in:
bsdevlin 2019-04-11 12:03:58 -04:00
parent 1ea7e60ad7
commit 505141ae76
1 changed files with 10 additions and 5 deletions
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15
zcash_fpga/src/rtl/secp256k1/secp256k1_top.sv
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@ -13,6 +13,9 @@ localparam DAT_BYTS = 8;
localparam DAT_BITS = DAT_BYTS*8;
import zcash_fpga_pkg::*;
debug_if #(.DAT_BYTS (8), .CTL_BITS (1)) tx_debug_if (.i_if(if_cmd_rx));
debug_if #(.DAT_BYTS (8), .CTL_BITS (1)) rx_debug_if (.i_if(if_cmd_tx));
// 256 bit inverse calculation
if_axi_stream #(.DAT_BYTS(256/8)) bin_inv_in_if(i_clk);
if_axi_stream #(.DAT_BYTS(256/8)) bin_inv_out_if(i_clk);
@ -42,7 +45,7 @@ typedef enum {IDLE,
IGNORE,
FINISHED} secp256k1_state_t;
secp256k1_state_t secp256k1_state;
(* mark_debug = "true" *) secp256k1_state_t secp256k1_state;
header_t header, header_l;
secp256k1_ver_t secp256k1_ver;
// Other temporary values
@ -379,10 +382,12 @@ always_ff @ (posedge i_clk) begin
endcase
// Something went wrong - send a message back to host
if (&timeout) begin
secp256k1_ver.TIMEOUT_FAIL <= 1;
end else begin
timeout <= timeout + 1;
if (secp256k1_state != IDLE) begin
if (&timeout) begin
secp256k1_ver.TIMEOUT_FAIL <= 1;
end else begin
timeout <= timeout + 1;
end
end
if (secp256k1_ver.TIMEOUT_FAIL && secp256k1_state != FINISHED) begin
cnt <= $bits(verify_secp256k1_sig_rpl_t)/8;