diff --git a/edk2-platforms b/edk2-platforms
index cf5d0a4..ba60f3c 160000
--- a/edk2-platforms
+++ b/edk2-platforms
@@ -1 +1 @@
-Subproject commit cf5d0a48c1d931faba506b2c22f8853f8f9f2749
+Subproject commit ba60f3cc562c94ed748c9b317490dfd9f1db5d23
diff --git a/scripts/qemu.sh b/scripts/qemu.sh
index 2a84459..a4dc7d4 100755
--- a/scripts/qemu.sh
+++ b/scripts/qemu.sh
@@ -20,6 +20,11 @@ MODEL_DIR="$(realpath "models/${MODEL}")"
 kvm -M q35 -m 1024 -vga std \
     -bios "build/${MODEL}/coreboot.rom" \
     -chardev stdio,mux=on,id=debug \
-    -device isa-serial,chardev=debug \
+    -device isa-serial,iobase=0x3e8,irq=4,chardev=debug \
     -device isa-debugcon,iobase=0x402,chardev=debug \
     "$@"
+
+# COM1: -device isa-serial,iobase=0x3f8,irq=4,chardev=debug
+# COM2: -device isa-serial,iobase=0x2f8,irq=3,chardev=debug
+# COM3: -device isa-serial,iobase=0x3e8,irq=4,chardev=debug
+# COM4: -device isa-serial,iobase=0x2e8,irq=3,chardev=debug