From 234e47a7c5226bf04c23f7708057d7298687d864 Mon Sep 17 00:00:00 2001
From: David Harris <David_Harris@hmc.edu>
Date: Fri, 15 Nov 2024 15:37:25 -0800
Subject: [PATCH] MTIMECMP should reset to maximum value for RV32, not just for
 RV64

---
 src/uncore/clint_apb.sv | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/uncore/clint_apb.sv b/src/uncore/clint_apb.sv
index 76735aaa6..e03745194 100644
--- a/src/uncore/clint_apb.sv
+++ b/src/uncore/clint_apb.sv
@@ -115,7 +115,7 @@ module clint_apb import cvw::*;  #(parameter cvw_t P) (
     always_ff @(posedge PCLK) 
       if (~PRESETn) begin
         MSIP <= 1'b0;
-        MTIMECMP <= '0;
+        MTIMECMP <= 64'hFFFFFFFFFFFFFFFF; // Spec says MTIMECMP is not reset, but we reset to maximum value to prevent spurious timer interrupts
       end else if (memwrite) begin
         if (entry == 16'h0000) MSIP <= PWDATA[0];
         if (entry == 16'h4000)