Fix index calculation for locked PMP csr logic (#1335)

Fixes #1332 Superseeds #1334 Signed-off-by: Moritz Schneider <[email protected]> Co-authored-by: Ömer Güzel <[email protected]>
openhwgroup · Aug 15, 2023 · 306973a · 306973a
1 parent 49d1262
commit 306973a
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/core/csr_regfile.sv b/core/csr_regfile.sv
@@ -872,7 +872,7 @@ module csr_regfile import ariane_pkg::*; #(
                     // index is specified by the last byte in the address
                     automatic int index = csr_addr.csr_decode.address[3:0];
                     // check if the entry or the entry above is locked
-                    if (!pmpcfg_q[index].locked && !(pmpcfg_q[index].locked && pmpcfg_q[index].addr_mode == riscv::TOR)) begin
+                    if (!pmpcfg_q[index].locked && !(pmpcfg_q[index+1].locked && pmpcfg_q[index].addr_mode == riscv::TOR)) begin
                         pmpaddr_d[index] = csr_wdata[riscv::PLEN-3:0];
                     end
                 end