[csrng/rtl] app if additional data is not captured
After timing changes were made to the state_db, additiona data from the
app command is not captured properly. A delay was added.
Signed-off-by: Mark Branstad <mark.branstad@wdc.com>
diff --git a/hw/ip/csrng/rtl/csrng_core.sv b/hw/ip/csrng/rtl/csrng_core.sv
index c6affe6..7b82003 100644
--- a/hw/ip/csrng/rtl/csrng_core.sv
+++ b/hw/ip/csrng/rtl/csrng_core.sv
@@ -89,7 +89,6 @@
logic [AppCmdWidth-1:0] acmd_bus;
logic [SeedLen-1:0] packer_adata;
- logic packer_adata_rrdy;
logic cmd_entropy_req;
logic cmd_entropy_avail;
@@ -323,6 +322,7 @@
logic cmd_req_dly_q, cmd_req_dly_d;
logic [Cmd-1:0] cmd_req_ccmd_dly_q, cmd_req_ccmd_dly_d;
logic cs_aes_halt_q, cs_aes_halt_d;
+ logic packer_adata_pop_q, packer_adata_pop_d;
always_ff @(posedge clk_i or negedge rst_ni)
if (!rst_ni) begin
@@ -336,6 +336,7 @@
cmd_req_dly_q <= '0;
cmd_req_ccmd_dly_q <= '0;
cs_aes_halt_q <= '0;
+ packer_adata_pop_q <= '0;
end else begin
acmd_q <= acmd_d;
shid_q <= shid_d;
@@ -347,6 +348,7 @@
cmd_req_dly_q <= cmd_req_dly_d;
cmd_req_ccmd_dly_q <= cmd_req_ccmd_dly_d;
cs_aes_halt_q <= cs_aes_halt_d;
+ packer_adata_pop_q <= packer_adata_pop_d;
end
//--------------------------------------------
@@ -865,11 +867,11 @@
.wready_o (),
.rvalid_o (),
.rdata_o (packer_adata),
- .rready_i (packer_adata_rrdy),
+ .rready_i (packer_adata_pop_q),
.depth_o ()
);
- assign packer_adata_rrdy = cs_enable &&
+ assign packer_adata_pop_d = cs_enable &&
((instant_req && flag0_q) ||
reseed_req ||
update_req ||
