[flash_ctrl] Add hw / sw escalate_en controls
Address #7011 and allow both hw / sw to completely stop flash transactions.
Signed-off-by: Timothy Chen <timothytim@google.com>
diff --git a/hw/ip/flash_ctrl/data/flash_ctrl.sv.tpl b/hw/ip/flash_ctrl/data/flash_ctrl.sv.tpl
index 44440b4..ce548b2 100644
--- a/hw/ip/flash_ctrl/data/flash_ctrl.sv.tpl
+++ b/hw/ip/flash_ctrl/data/flash_ctrl.sv.tpl
@@ -30,6 +30,7 @@
input lc_ctrl_pkg::lc_tx_t lc_iso_part_sw_rd_en_i,
input lc_ctrl_pkg::lc_tx_t lc_iso_part_sw_wr_en_i,
input lc_ctrl_pkg::lc_tx_t lc_seed_hw_rd_en_i,
+ input lc_ctrl_pkg::lc_tx_t lc_escalate_en_i,
// Bus Interface
input tlul_pkg::tl_h2d_t core_tl_i,
@@ -216,6 +217,9 @@
lc_ctrl_pkg::lc_tx_t lc_iso_part_sw_wr_en;
lc_ctrl_pkg::lc_tx_t lc_seed_hw_rd_en;
+ // flash functional disable
+ lc_ctrl_pkg::lc_tx_t flash_disable;
+
// synchronize enables into local domain
prim_lc_sync #(
.NumCopies(1)
@@ -803,8 +807,6 @@
assign flash_phy_busy = flash_i.init_busy;
-
-
// Interface to pwrmgr
// flash is not idle as long as there is a stateful operation ongoing
logic flash_idle_d;
@@ -869,6 +871,23 @@
);
end
+ //////////////////////////////////////
+ // Flash Disable
+ //////////////////////////////////////
+ assign flash_disable = reg2hw.flash_disable.q ? lc_ctrl_pkg::On :
+ fatal_intg_err ? lc_ctrl_pkg::On : lc_ctrl_pkg::Off;
+
+ lc_ctrl_pkg::lc_tx_t lc_escalate_en;
+ prim_lc_sync #(
+ .NumCopies(1)
+ ) u_lc_escalation_en_sync (
+ .clk_i,
+ .rst_ni,
+ .lc_en_i(lc_escalate_en_i),
+ .lc_en_o(lc_escalate_en)
+ );
+
+ assign flash_o.flash_disable = flash_disable | lc_escalate_en;
//////////////////////////////////////
// Errors and Interrupts
