[otbn, pre_sca] Make sideload key signals as input
This will allow us to label them.
Signed-off-by: Abdullah Varici <abdullah.varici@lowrisc.org>
diff --git a/hw/ip/otbn/pre_sca/alma/rtl/otbn_top_coco.v b/hw/ip/otbn/pre_sca/alma/rtl/otbn_top_coco.v
index ff3717e..f02fe37 100644
--- a/hw/ip/otbn/pre_sca/alma/rtl/otbn_top_coco.v
+++ b/hw/ip/otbn/pre_sca/alma/rtl/otbn_top_coco.v
@@ -6,7 +6,9 @@
// Instruction data width
parameter ImemDataWidth = 39,
// Data path width for BN (wide) instructions, in bits.
- parameter WLEN = 256
+ parameter WLEN = 256,
+ // Sideload key data width
+ parameter SideloadKeyWidth = 384
) (
input clk_sys,
input rst_sys_n,
@@ -15,14 +17,14 @@
input [ImemDataWidth-1:0] imem_wmask_i,
input [WLEN-1:0] edn_rnd_data_i,
input [WLEN-1:0] edn_urnd_data_i,
+ input [SideloadKeyWidth-1:0] sideload_key_share_0_i,
+ input [SideloadKeyWidth-1:0] sideload_key_share_1_i,
output [31:0] otbn_cycle_cnt_o
);
// Size of the instruction memory, in bytes
localparam ImemSizeByte = 128*4; //32'h1000;
// Size of the data memory, in bytes
localparam DmemSizeByte = 8*32; //32'h1000;
- // Sideload key data width
- localparam SideloadKeyWidth = 384;
// "Extended" WLEN: the size of the datapath with added integrity bits
localparam ExtWLEN = WLEN * ImemDataWidth / 32;
@@ -84,8 +86,7 @@
// Sideload Key
wire [2*SideloadKeyWidth-1:0] sideload_key_shares;
- assign sideload_key_shares[SideloadKeyWidth-1:0] = {12{32'hDEADBEEF}};
- assign sideload_key_shares[2*SideloadKeyWidth-1:SideloadKeyWidth] = {12{32'hBAADF00D}};
+ assign sideload_key_shares = {sideload_key_share_1_i, sideload_key_share_0_i};
localparam [3:0] MuBi4False = 4'h9;
