[dv/flash_ctrl] update scoreboard on backdoor writes
- currently flash_rand_ops sometimes fails because the backdoor
updates do not also update the scoreboard. This means if
after a backdoor operation there is not an explicit front-door
operation, the later read check will fail.
- it is surprising this was not failing more often. This fix adds
the scoreboard update, and at least in local runs it seems to
be better.
Signed-off-by: Timothy Chen <timothytim@google.com>
diff --git a/hw/ip/flash_ctrl/dv/env/flash_ctrl_env_cfg.sv b/hw/ip/flash_ctrl/dv/env/flash_ctrl_env_cfg.sv
index e6c6554..698da21 100644
--- a/hw/ip/flash_ctrl/dv/env/flash_ctrl_env_cfg.sv
+++ b/hw/ip/flash_ctrl/dv/env/flash_ctrl_env_cfg.sv
@@ -189,6 +189,8 @@
data_q_t data = {});
flash_mem_addr_attrs addr_attrs = new(flash_op.addr);
data_4s_t wr_data;
+ data_b_t mem_data;
+
// Randomize the lower half-word (if Xs) if the first half-word written in the below loop is
// corresponding upper half-word.
@@ -223,6 +225,13 @@
addr_attrs.sprint(),
loc_data
), UVM_MEDIUM)
+
+ // update the scoreboard on backdoor-programs as well
+ mem_data[0] = loc_data;
+ set_scb_mem(1, flash_op.partition,
+ addr_attrs.addr, CustomVal, mem_data);
+
+ // increment after all updates are complete
addr_attrs.incr(TL_DBW);
end
