1 files changed, 3 insertions, 0 deletions
diff --git a/sbe/build/simics/sbe_startup.simics b/sbe/build/simics/sbe_startup.simics
index 15cd9e91..2ada47a1 100755
--- a/sbe/build/simics/sbe_startup.simics
+++ b/sbe/build/simics/sbe_startup.simics
@@ -7,5 +7,8 @@ try {
     python "os.environ['SBE_TOOLS_PATH'] = \""+$sbe_script_location+"\""
     echo $sbe_script_location;
     run-python-file (lookup-file sbfw/simics-debug-framework.py)
+    # Set mailbox scratch registers so that the SBE starts in istep mode
+    p9Proc0.proc_chip.invoke parallel_store SCOM 0x5003F "20000000_00000000" 64
+    p9Proc0.proc_chip.invoke parallel_store SCOM 0x5003A "90000000_00000000" 64
 } except { echo "ERROR: Failed to load SBE debug tools." }