diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c
index 1d49c19798..6234080fe9 100644
--- a/hw/acpi/aml-build.c
+++ b/hw/acpi/aml-build.c
@@ -484,6 +484,15 @@ Aml *aml_or(Aml *arg1, Aml *arg2)
     return build_opcode_2arg_dst(0x7D /* OrOp */, arg1, arg2, NULL);
 }
 
+/* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefLOr */
+Aml *aml_lor(Aml *arg1, Aml *arg2)
+{
+    Aml *var = aml_opcode(0x91 /* LOrOp */);
+    aml_append(var, arg1);
+    aml_append(var, arg2);
+    return var;
+}
+
 /* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefShiftLeft */
 Aml *aml_shiftleft(Aml *arg1, Aml *count)
 {
diff --git a/include/hw/acpi/aml-build.h b/include/hw/acpi/aml-build.h
index 3525fe9a17..67ab45fb3a 100644
--- a/include/hw/acpi/aml-build.h
+++ b/include/hw/acpi/aml-build.h
@@ -228,6 +228,7 @@ Aml *aml_to_integer(Aml *arg);
 Aml *aml_store(Aml *val, Aml *target);
 Aml *aml_and(Aml *arg1, Aml *arg2);
 Aml *aml_or(Aml *arg1, Aml *arg2);
+Aml *aml_lor(Aml *arg1, Aml *arg2);
 Aml *aml_shiftleft(Aml *arg1, Aml *count);
 Aml *aml_shiftright(Aml *arg1, Aml *count, Aml *dst);
 Aml *aml_lless(Aml *arg1, Aml *arg2);