diff --git a/os/hal/include/sdc.h b/os/hal/include/sdc.h
new file mode 100644
index 000000000..d578e65b4
--- /dev/null
+++ b/os/hal/include/sdc.h
@@ -0,0 +1,94 @@
+/*
+    ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
+                 2011 Giovanni Di Sirio.
+
+    This file is part of ChibiOS/RT.
+
+    ChibiOS/RT 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/RT 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    sdc.h
+ * @brief   SDC Driver macros and structures.
+ *
+ * @addtogroup SDC
+ * @{
+ */
+
+#ifndef _SDC_H_
+#define _SDC_H_
+
+#if HAL_USE_SDC || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Driver constants.                                                         */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver pre-compile time settings.                                         */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Derived constants and error checks.                                       */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver data structures and types.                                         */
+/*===========================================================================*/
+
+/**
+ * @brief   Driver state machine possible states.
+ */
+typedef enum {
+  SDC_UNINIT = 0,                   /**< Not initialized.                   */
+  SDC_STOP = 1,                     /**< Stopped.                           */
+  SDC_READY = 2,                    /**< Ready.                             */
+  SDC_INITNG = 3,                   /**< Card initialization in progress.   */
+  SDC_ACTIVE = 4,                   /**< Cart initialized.                  */
+  SDC_READING = 5,                  /**< Read operation in progress.        */
+  SDC_WRITING = 6,                  /**< Write operation in progress.       */
+} sdcstate_t;
+
+#include "sdc_lld.h"
+
+/*===========================================================================*/
+/* Driver macros.                                                            */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* External declarations.                                                    */
+/*===========================================================================*/
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+  void sdcInit(void);
+  void sdcObjectInit(SDCDriver *sdcp);
+  void sdcStart(SDCDriver *sdcp, const SDCConfig *config);
+  void sdcStop(SDCDriver *sdcp);
+  bool_t sdcConnect(SDCDriver *sdcp);
+  bool_t sdcDisconnect(SDCDriver *sdcp);
+  bool_t sdcRead(SDCDriver *sdcp, uint32_t startblk,
+                 uint8_t *buffer, uint32_t n);
+  bool_t sdcWrite(SDCDriver *sdcp, uint32_t startblk,
+                  const uint8_t *buffer, uint32_t n);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* HAL_USE_SDC */
+
+#endif /* _SDC_H_ */
+
+/** @} */
diff --git a/os/hal/platforms/STM32/sdc_lld.c b/os/hal/platforms/STM32/sdc_lld.c
new file mode 100644
index 000000000..48f8561f9
--- /dev/null
+++ b/os/hal/platforms/STM32/sdc_lld.c
@@ -0,0 +1,167 @@
+/*
+    ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
+                 2011 Giovanni Di Sirio.
+
+    This file is part of ChibiOS/RT.
+
+    ChibiOS/RT 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/RT 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    STM32/sdc_lld.c
+ * @brief   STM32 SDC subsystem low level driver source.
+ *
+ * @addtogroup SDC
+ * @{
+ */
+
+#include "ch.h"
+#include "hal.h"
+
+#if HAL_USE_SDC || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Driver exported variables.                                                */
+/*===========================================================================*/
+
+/** @brief SDCD1 driver identifier.*/
+SDCDriver SDCD1;
+
+/*===========================================================================*/
+/* Driver local variables.                                                   */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local functions.                                                   */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver interrupt handlers.                                                */
+/*===========================================================================*/
+
+/**
+ * @brief   SDIO IRQ handler.
+ *
+ * @isr
+ */
+CH_IRQ_HANDLER(SDIO_IRQHandler) {
+
+  CH_IRQ_PROLOGUE();
+
+
+  CH_IRQ_EPILOGUE();
+}
+
+/*===========================================================================*/
+/* Driver exported functions.                                                */
+/*===========================================================================*/
+
+/**
+ * @brief   Low level SDC driver initialization.
+ *
+ * @notapi
+ */
+void sdc_lld_init(void) {
+
+  sdcObjectInit(&SDCD1);
+}
+
+/**
+ * @brief   Configures and activates the SDC peripheral.
+ *
+ * @param[in] sdcp      pointer to the @p SDCDriver object
+ *
+ * @notapi
+ */
+void sdc_lld_start(SDCDriver *sdcp) {
+
+  if (sdcp->state == SDC_STOP) {
+    /* Note, the DMA must be enabled before the IRQs.*/
+    dmaAllocate(STM32_DMA2_ID, STM32_DMA_CHANNEL_4, NULL, NULL);
+    NVICEnableVector(SDIO_IRQn,
+                     CORTEX_PRIORITY_MASK(STM32_SDC_SDIO_IRQ_PRIORITY));
+    RCC->AHBENR |= RCC_AHBENR_SDIOEN;
+  }
+  /* Configuration, card clock is initially stopped.*/
+  SDIO->POWER = 0;
+  SDIO->CLKCR = 0;
+  SDIO->DCTRL = 0;
+}
+
+/**
+ * @brief   Deactivates the SDC peripheral.
+ *
+ * @param[in] sdcp      pointer to the @p SDCDriver object
+ *
+ * @notapi
+ */
+void sdc_lld_stop(SDCDriver *sdcp) {
+
+  if ((sdcp->state == SDC_READY) || (sdcp->state == SDC_ACTIVE)) {
+    SDIO->POWER = 0;
+    SDIO->CLKCR = 0;
+    SDIO->DCTRL = 0;
+
+    /* Clock deactivation.*/
+    NVICDisableVector(SDIO_IRQn);
+    dmaRelease(STM32_DMA2_ID, STM32_DMA_CHANNEL_4);
+  }
+}
+
+/**
+ * @brief   Sends an SDIO command with no response expected.
+ *
+ * @param[in] sdcp      pointer to the @p SDCDriver object
+ *
+ * @notapi
+ */
+void sdc_lld_send_cmd_none(SDCDriver *sdcp, uint8_t cmd, uint32_t arg) {
+
+}
+
+/**
+ * @brief   Sends an SDIO command with a short response expected.
+ *
+ * @param[in] sdcp      pointer to the @p SDCDriver object
+ * @return              The operation status.
+ * @retval FALSE        the operation succeeded.
+ * @retval TRUE         the operation failed because timeout, CRC check or
+ *                      other errors.
+ *
+ * @notapi
+ */
+bool_t sdc_lld_send_cmd_short(SDCDriver *sdcp, uint8_t cmd, uint32_t arg,
+                              uint32_t *resp) {
+
+}
+
+/**
+ * @brief   Sends an SDIO command with a long response expected.
+ *
+ * @param[in] sdcp      pointer to the @p SDCDriver object
+ * @return              The operation status.
+ * @retval FALSE        the operation succeeded.
+ * @retval TRUE         the operation failed because timeout, CRC check or
+ *                      other errors.
+ *
+ * @notapi
+ */
+bool_t sdc_lld_send_cmd_long(SDCDriver *sdcp, uint8_t cmd, uint32_t arg,
+                             uint32_t *resp) {
+
+}
+
+#endif /* HAL_USE_SDC */
+
+/** @} */
diff --git a/os/hal/platforms/STM32/sdc_lld.h b/os/hal/platforms/STM32/sdc_lld.h
new file mode 100644
index 000000000..012fdb1c7
--- /dev/null
+++ b/os/hal/platforms/STM32/sdc_lld.h
@@ -0,0 +1,152 @@
+/*
+    ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
+                 2011 Giovanni Di Sirio.
+
+    This file is part of ChibiOS/RT.
+
+    ChibiOS/RT 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/RT 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    STM32/sdc_lld.h
+ * @brief   STM32 SDC subsystem low level driver header.
+ *
+ * @addtogroup SDC
+ * @{
+ */
+
+#ifndef _SDC_LLD_H_
+#define _SDC_LLD_H_
+
+#if HAL_USE_SDC || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Driver constants.                                                         */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver pre-compile time settings.                                         */
+/*===========================================================================*/
+
+/**
+ * @brief   SDIO DMA priority (0..3|lowest..highest).
+ */
+#if !defined(STM32_SDC_SDIO_DMA_PRIORITY) || defined(__DOXYGEN__)
+#define STM32_SDC_SDIO_DMA_PRIORITY         2
+#endif
+
+/**
+ * @brief   SDIO interrupt priority level setting.
+ */
+#if !defined(STM32_SDC_SDIO_IRQ_PRIORITY) || defined(__DOXYGEN__)
+#define STM32_SDC_SDIO_IRQ_PRIORITY         9
+#endif
+
+/**
+ * @brief   SDIO DMA error hook.
+ * @note    The default action for DMA errors is a system halt because DMA
+ *          error can only happen because programming errors.
+ */
+#if !defined(STM32_SDC_DMA_ERROR_HOOK) || defined(__DOXYGEN__)
+#define STM32_SDC_DMA_ERROR_HOOK(sdcp)      chSysHalt()
+#endif
+
+/*===========================================================================*/
+/* Derived constants and error checks.                                       */
+/*===========================================================================*/
+
+#if !STM32_HAS_SDIO
+#error "SDIO not present in the selected device"
+#endif
+
+#if !defined(STM32_DMA_REQUIRED)
+#define STM32_DMA_REQUIRED
+#endif
+
+/*
+ * SDIO clock divider.
+ */
+#if STM32_HCLK > 48000000
+#define STM32_SDIO_DIV_HS                   0x01
+#define STM32_SDIO_DIV_LS                   0xB2
+#else
+#define STM32_SDIO_DIV_HS                   0x00
+#define STM32_SDIO_DIV_LS                   0x76
+#endif
+
+/*===========================================================================*/
+/* Driver data structures and types.                                         */
+/*===========================================================================*/
+
+
+/**
+ * @brief   Type of a structure representing an SDC driver.
+ */
+typedef struct SDCDriver SDCDriver;
+
+/**
+ * @brief   Driver configuration structure.
+ * @note    It could be empty on some architectures.
+ */
+typedef struct {
+
+} SDCConfig;
+
+/**
+ * @brief   Structure representing an SDC driver.
+ */
+struct SDCDriver {
+  /**
+   * @brief Driver state.
+   */
+  sdcstate_t                state;
+  /**
+   * @brief Current configuration data.
+   */
+  const SDCConfig           *config;
+  /* End of the mandatory fields.*/
+};
+
+/*===========================================================================*/
+/* Driver macros.                                                            */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* External declarations.                                                    */
+/*===========================================================================*/
+
+#if !defined(__DOXYGEN__)
+extern SDCDriver SDCD1;
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+  void sdc_lld_init(void);
+  void sdc_lld_start(SDCDriver *sdcp);
+  void sdc_lld_stop(SDCDriver *sdcp);
+  void sdc_lld_send_cmd_none(SDCDriver *sdcp, uint8_t cmd, uint32_t arg);
+  bool_t sdc_lld_send_cmd_short(SDCDriver *sdcp, uint8_t cmd, uint32_t arg,
+                                uint32_t *resp);
+  bool_t sdc_lld_send_cmd_long(SDCDriver *sdcp, uint8_t cmd, uint32_t arg,
+                               uint32_t *resp);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* HAL_USE_SDC */
+
+#endif /* _SDC_LLD_H_ */
+
+/** @} */
diff --git a/os/hal/src/sdc.c b/os/hal/src/sdc.c
new file mode 100644
index 000000000..33f2b3612
--- /dev/null
+++ b/os/hal/src/sdc.c
@@ -0,0 +1,207 @@
+/*
+    ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
+                 2011 Giovanni Di Sirio.
+
+    This file is part of ChibiOS/RT.
+
+    ChibiOS/RT 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/RT 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    sdc.c
+ * @brief   SDC Driver code.
+ *
+ * @addtogroup SDC
+ * @{
+ */
+
+#include "ch.h"
+#include "hal.h"
+
+#if HAL_USE_SDC || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Driver exported variables.                                                */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local variables.                                                   */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local functions.                                                   */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver exported functions.                                                */
+/*===========================================================================*/
+
+/**
+ * @brief   SDC Driver initialization.
+ * @note    This function is implicitly invoked by @p halInit(), there is
+ *          no need to explicitly initialize the driver.
+ *
+ * @init
+ */
+void sdcInit(void) {
+
+  sdc_lld_init();
+}
+
+/**
+ * @brief   Initializes the standard part of a @p SDCDriver structure.
+ *
+ * @param[out] sdcp     pointer to the @p SDCDriver object
+ *
+ * @init
+ */
+void sdcObjectInit(SDCDriver *sdcp) {
+
+  sdcp->state  = SDC_STOP;
+  sdcp->config = NULL;
+}
+
+/**
+ * @brief   Configures and activates the SDC peripheral.
+ *
+ * @param[in] sdcp      pointer to the @p SDCDriver object
+ * @param[in] config    pointer to the @p SDCConfig object
+ *
+ * @api
+ */
+void sdcStart(SDCDriver *sdcp, const SDCConfig *config) {
+
+  chDbgCheck((sdcp != NULL) && (config != NULL), "sdcStart");
+
+  chSysLock();
+  chDbgAssert((sdcp->state == SDC_STOP) || (sdcp->state == SDC_READY),
+              "sdcStart(), #1", "invalid state");
+  sdcp->config = config;
+  sdc_lld_start(sdcp);
+  sdcp->state = SDC_READY;
+  chSysUnlock();
+}
+
+/**
+ * @brief   Deactivates the SDC peripheral.
+ *
+ * @param[in] sdcp      pointer to the @p SDCDriver object
+ *
+ * @api
+ */
+void sdcStop(SDCDriver *sdcp) {
+
+  chDbgCheck(sdcp != NULL, "sdcStop");
+
+  chSysLock();
+  chDbgAssert((sdcp->state == SDC_STOP) || (sdcp->state == SDC_READY),
+              "sdcStop(), #1", "invalid state");
+  sdc_lld_stop(sdcp);
+  sdcp->state = SDC_STOP;
+  chSysUnlock();
+}
+
+/**
+ * @brief   Performs the initialization procedure on the inserted card.
+ * @details This function should be invoked when a card is inserted and
+ *          brings the driver in the @p SDC_ACTIVE state where it is possible
+ *          to perform read and write operations.
+ *
+ * @param[in] sdcp      pointer to the @p SDCDriver object
+ * @return              The operation status.
+ * @retval FALSE        operation succeeded, the driver is now
+ *                      in the @p SDC_ACTIVE state.
+ * @retval TRUE         operation failed.
+ *
+ * @api
+ */
+bool_t sdcConnect(SDCDriver *sdcp) {
+
+  chDbgCheck(sdcp != NULL, "sdcConnect");
+
+  chSysLock();
+  chDbgAssert(sdcp->state == SDC_READY, "mmcConnect(), #1", "invalid state");
+  sdcp->state = SDC_INITNG;
+  chSysUnlock();
+
+  sdcp->state = SDC_ACTIVE;
+  return FALSE;
+}
+
+/**
+ * @brief   Brings the driver in a state safe for card removal.
+ *
+ * @param[in] sdcp      pointer to the @p SDCDriver object
+ * @return              The operation status.
+ * @retval FALSE        the operation succeeded and the driver is now
+ *                      in the @p SDC_READY state.
+ * @retval TRUE         the operation failed.
+ *
+ * @api
+ */
+bool_t sdcDisconnect(SDCDriver *sdcp) {
+
+  chDbgCheck(sdcp != NULL, "sdcConnect");
+
+  chSysLock();
+  chDbgAssert(sdcp->state == SDC_ACTIVE,
+              "sdcDisconnect(), #1", "invalid state");
+  sdcp->state = SDC_READY;
+  chSysUnlock();
+  return FALSE;
+}
+
+/**
+ * @brief   Reads one or more blocks.
+ * @pre     The driver must be in the @p SDC_ACTIVE state after a successful
+ *          sdcConnect() invocation.
+ *
+ * @param[in] sdcp      pointer to the @p SDCDriver object
+ * @param[in] startblk  first block to read
+ * @param[out] buffer   pointer to the read buffer
+ * @return              The operation status.
+ * @retval FALSE        operation succeeded, the requested blocks have been
+ *                      read.
+ * @retval TRUE         operation failed, the state of the buffer is uncertain.
+ *
+ * @api
+ */
+bool_t sdcRead(SDCDriver *sdcp, uint32_t startblk,
+               uint8_t *buffer, uint32_t n) {
+
+}
+
+/**
+ * @brief   Writes one or more blocks.
+ * @pre     The driver must be in the @p SDC_ACTIVE state after a successful
+ *          sdcConnect() invocation.
+ *
+ * @param[in] sdcp      pointer to the @p SDCDriver object
+ * @param[in] startblk  first block to write
+ * @param[out] buffer   pointer to the write buffer
+ * @return              The operation status.
+ * @retval FALSE        operation succeeded, the requested blocks have been
+ *                      written.
+ * @retval TRUE         operation failed.
+ *
+ * @api
+ */
+bool_t sdcWrite(SDCDriver *sdcp, uint32_t startblk,
+                const uint8_t *buffer, uint32_t n) {
+
+}
+
+#endif /* HAL_USE_SDC */
+
+/** @} */