diff --git a/platformio/commands/debug/initcfgs.py b/platformio/commands/debug/initcfgs.py
index 55e7c34f..bb319270 100644
--- a/platformio/commands/debug/initcfgs.py
+++ b/platformio/commands/debug/initcfgs.py
@@ -141,6 +141,17 @@ $INIT_BREAK
 monitor start
 """
 
+GDB_SIMAVR_INIT_CONFIG = """
+define pio_reset_halt_target
+end
+
+define pio_reset_run_target
+end
+
+target extended-remote $DEBUG_PORT
+$INIT_BREAK
+$LOAD_CMDS
+"""
 
 TOOL_TO_CONFIG = {
     "jlink": GDB_JLINK_INIT_CONFIG,
@@ -148,6 +159,7 @@ TOOL_TO_CONFIG = {
     "qemu": GDB_QEMU_INIT_CONFIG,
     "blackmagic": GDB_BLACKMAGIC_INIT_CONFIG,
     "renode": GDB_RENODE_INIT_CONFIG,
+    "simavr": GDB_SIMAVR_INIT_CONFIG,
 }