diff --git a/boards/opencm904/Kconfig b/boards/opencm904/Kconfig
new file mode 100644
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+++ b/boards/opencm904/Kconfig
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+# Copyright (c) 2020 Inria
+#
+# This file is subject to the terms and conditions of the GNU Lesser
+# General Public License v2.1. See the file LICENSE in the top level
+# directory for more details.
+#
+
+config BOARD
+    default "opencm904" if BOARD_OPENCM904
+
+config BOARD_OPENCM904
+    bool
+    default y
+    select CPU_MODEL_STM32F103CB
+
+    # Put defined MCU peripherals here (in alphabetical order)
+    select HAS_PERIPH_TIMER
+    select HAS_PERIPH_UART