diff --git a/os/common/ports/ARMCMx/devices/STM32L0xx/cmparams.h b/os/common/ports/ARMCMx/devices/STM32L0xx/cmparams.h
new file mode 100644
index 000000000..0002cb05a
--- /dev/null
+++ b/os/common/ports/ARMCMx/devices/STM32L0xx/cmparams.h
@@ -0,0 +1,83 @@
+/*
+    ChibiOS - Copyright (C) 2006,2007,2008,2009,2010,
+              2011,2012,2013,2014 Giovanni Di Sirio.
+
+    This file is part of ChibiOS.
+
+    ChibiOS is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    ChibiOS is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ * @file    STM32L0xx/cmparams.h
+ * @brief   ARM Cortex-M0+ parameters for the STM32L0xx.
+ *
+ * @defgroup ARMCMx_STM32L0xx STM32L0xx Specific Parameters
+ * @ingroup ARMCMx_SPECIFIC
+ * @details This file contains the Cortex-M0 specific parameters for the
+ *          STM32L0xx platform.
+ * @{
+ */
+
+#ifndef _CMPARAMS_H_
+#define _CMPARAMS_H_
+
+/**
+ * @brief   Cortex core model.
+ */
+#define CORTEX_MODEL            CORTEX_M0PLUS
+
+/**
+ * @brief   Floating Point unit presence.
+ */
+#define CORTEX_HAS_FPU          0
+
+/**
+ * @brief   Number of bits in priority masks.
+ */
+#define CORTEX_PRIORITY_BITS    4
+
+/**
+ * @brief   Number of interrupt vectors.
+ * @note    This number does not include the 16 system vectors and must be
+ *          rounded to a multiple of 8.
+ */
+#define CORTEX_NUM_VECTORS      32
+
+/* The following code is not processed when the file is included from an
+   asm module.*/
+#if !defined(_FROM_ASM_)
+
+/* If the device type is not externally defined, for example from the Makefile,
+   then a file named board.h is included. This file must contain a device
+   definition compatible with the vendor include file.*/
+#if !defined(STM32L051xx) && !defined(STM32L052xx) &&                       \
+    !defined(STM32L053xx) && !defined(STM32L062xx) &&                       \
+    !defined(STM32L063xx) && !defined(STM32L061xx)
+#include "board.h"
+#endif
+
+/* Including the device CMSIS header. Note, we are not using the definitions
+   from this header because we need this file to be usable also from
+   assembler source files. We verify that the info matches instead.*/
+#include "stm32l0xx.h"
+
+#if CORTEX_PRIORITY_BITS != __NVIC_PRIO_BITS
+#error "CMSIS __NVIC_PRIO_BITS mismatch"
+#endif
+
+#endif /* !defined(_FROM_ASM_) */
+
+#endif /* _CMPARAMS_H_ */
+
+/** @} */
diff --git a/os/nil/ports/ARMCMx/nilcore.h b/os/nil/ports/ARMCMx/nilcore.h
index 8a9d98b8f..96c9b645b 100644
--- a/os/nil/ports/ARMCMx/nilcore.h
+++ b/os/nil/ports/ARMCMx/nilcore.h
@@ -72,9 +72,9 @@
  */
 #define CORTEX_M0                       0   /**< @brief Cortex-M0 variant.  */
 #define CORTEX_M0PLUS                   1   /**< @brief Cortex-M0+ variant. */
-#define CORTEX_M1                       2   /**< @brief Cortex-M1 variant.  */
-#define CORTEX_M3                       3   /**< @brief Cortex-M3 variant.  */
-#define CORTEX_M4                       4   /**< @brief Cortex-M4 variant.  */
+#define CORTEX_M1                       10  /**< @brief Cortex-M1 variant.  */
+#define CORTEX_M3                       30  /**< @brief Cortex-M3 variant.  */
+#define CORTEX_M4                       40  /**< @brief Cortex-M4 variant.  */
 /** @} */
 
 /* Inclusion of the Cortex-Mx implementation specific parameters.*/
diff --git a/os/rt/ports/ARMCMx/chcore.h b/os/rt/ports/ARMCMx/chcore.h
index 773d7a85c..5d44551a8 100644
--- a/os/rt/ports/ARMCMx/chcore.h
+++ b/os/rt/ports/ARMCMx/chcore.h
@@ -73,9 +73,9 @@
  */
 #define CORTEX_M0                       0   /**< @brief Cortex-M0 variant.  */
 #define CORTEX_M0PLUS                   1   /**< @brief Cortex-M0+ variant. */
-#define CORTEX_M1                       2   /**< @brief Cortex-M1 variant.  */
-#define CORTEX_M3                       3   /**< @brief Cortex-M3 variant.  */
-#define CORTEX_M4                       4   /**< @brief Cortex-M4 variant.  */
+#define CORTEX_M1                       10  /**< @brief Cortex-M1 variant.  */
+#define CORTEX_M3                       30  /**< @brief Cortex-M3 variant.  */
+#define CORTEX_M4                       40  /**< @brief Cortex-M4 variant.  */
 /** @} */
 
 /* Inclusion of the Cortex-Mx implementation specific parameters.*/