diff --git a/py/modsys.c b/py/modsys.c
index 738758bdf4..a99db1b7f8 100644
--- a/py/modsys.c
+++ b/py/modsys.c
@@ -51,6 +51,9 @@ mp_obj_list_t mp_sys_argv_obj;
 STATIC const mp_obj_tuple_t mp_sys_version_info_obj = {{&mp_type_tuple}, 3, {I(3), I(4), I(0)}};
 #undef I
 STATIC const MP_DEFINE_STR_OBJ(version_obj, "3.4.0");
+#ifdef MICROPY_PY_SYS_PLATFORM
+STATIC const MP_DEFINE_STR_OBJ(platform_obj, MICROPY_PY_SYS_PLATFORM);
+#endif
 
 STATIC const mp_map_elem_t mp_module_sys_globals_table[] = {
     { MP_OBJ_NEW_QSTR(MP_QSTR___name__), MP_OBJ_NEW_QSTR(MP_QSTR_sys) },
@@ -59,6 +62,9 @@ STATIC const mp_map_elem_t mp_module_sys_globals_table[] = {
     { MP_OBJ_NEW_QSTR(MP_QSTR_argv), (mp_obj_t)&mp_sys_argv_obj },
     { MP_OBJ_NEW_QSTR(MP_QSTR_version), (mp_obj_t)&version_obj },
     { MP_OBJ_NEW_QSTR(MP_QSTR_version_info), (mp_obj_t)&mp_sys_version_info_obj },
+#ifdef MICROPY_PY_SYS_PLATFORM
+    { MP_OBJ_NEW_QSTR(MP_QSTR_platform), (mp_obj_t)&platform_obj },
+#endif
 #if MP_ENDIANNESS_LITTLE
     { MP_OBJ_NEW_QSTR(MP_QSTR_byteorder), MP_OBJ_NEW_QSTR(MP_QSTR_little) },
 #else
diff --git a/py/objtype.c b/py/objtype.c
index dfe5eaa8f0..0d6674c33d 100644
--- a/py/objtype.c
+++ b/py/objtype.c
@@ -336,9 +336,9 @@ STATIC const qstr binary_op_method_name[] = {
     MP_BINARY_OP_INPLACE_FLOOR_DIVIDE,
     MP_BINARY_OP_INPLACE_TRUE_DIVIDE,
     MP_BINARY_OP_INPLACE_MODULO,
-    MP_BINARY_OP_INPLACE_POWER,
-    MP_BINARY_OP_LESS,
-    MP_BINARY_OP_MORE,
+    MP_BINARY_OP_INPLACE_POWER,*/
+    [MP_BINARY_OP_LESS] = MP_QSTR___lt__,
+    /*MP_BINARY_OP_MORE,
     MP_BINARY_OP_EQUAL,
     MP_BINARY_OP_LESS_EQUAL,
     MP_BINARY_OP_MORE_EQUAL,
diff --git a/py/qstrdefs.h b/py/qstrdefs.h
index 69182f2809..521d4399a5 100644
--- a/py/qstrdefs.h
+++ b/py/qstrdefs.h
@@ -60,6 +60,7 @@ Q(__str__)
 Q(__getattr__)
 Q(__del__)
 Q(__call__)
+Q(__lt__)
 
 Q(micropython)
 Q(bytecode)
@@ -343,6 +344,9 @@ Q(byteorder)
 Q(big)
 Q(exit)
 Q(little)
+#ifdef MICROPY_PY_SYS_PLATFORM
+Q(platform)
+#endif
 Q(stdin)
 Q(stdout)
 Q(stderr)
diff --git a/py/runtime.c b/py/runtime.c
index cdbf99d4a5..179b48d327 100644
--- a/py/runtime.c
+++ b/py/runtime.c
@@ -1150,6 +1150,10 @@ void *m_malloc_fail(int num_bytes) {
     nlr_raise((mp_obj_t)&mp_const_MemoryError_obj);
 }
 
+NORETURN void mp_not_implemented(const char *msg) {
+    nlr_raise(mp_obj_new_exception_msg(&mp_type_NotImplementedError, msg));
+}
+
 // these must correspond to the respective enum
 void *const mp_fun_table[MP_F_NUMBER_OF] = {
     mp_load_const_int,
diff --git a/py/runtime.h b/py/runtime.h
index dbd413180b..fb61c01dd1 100644
--- a/py/runtime.h
+++ b/py/runtime.h
@@ -112,6 +112,9 @@ mp_obj_t mp_import_name(qstr name, mp_obj_t fromlist, mp_obj_t level);
 mp_obj_t mp_import_from(mp_obj_t module, qstr name);
 void mp_import_all(mp_obj_t module);
 
+// Raise NotImplementedError with given message
+NORETURN void mp_not_implemented(const char *msg);
+
 extern struct _mp_obj_list_t mp_sys_path_obj;
 extern struct _mp_obj_list_t mp_sys_argv_obj;
 #define mp_sys_path ((mp_obj_t)&mp_sys_path_obj)
diff --git a/unix/mpconfigport.h b/unix/mpconfigport.h
index ace7a419b4..bf2cf73efd 100644
--- a/unix/mpconfigport.h
+++ b/unix/mpconfigport.h
@@ -43,6 +43,7 @@
 #define MICROPY_OPT_COMPUTED_GOTO   (1)
 #define MICROPY_PY_BUILTINS_FROZENSET (1)
 #define MICROPY_PY_SYS_EXIT         (1)
+#define MICROPY_PY_SYS_PLATFORM     "linux"
 #define MICROPY_PY_SYS_STDFILES     (1)
 #define MICROPY_PY_CMATH            (1)
 #define MICROPY_PY_IO_FILEIO        (1)