1 files changed, 122 insertions, 0 deletions
diff --git a/os/hal/src/hal_sdram.c b/os/hal/src/hal_sdram.c
new file mode 100644
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+++ b/os/hal/src/hal_sdram.c
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+/*
+    ChibiOS - Copyright (C) 2006..2017 Giovanni Di Sirio
+              Copyright (C) 2017 Fabien Poussin (fabien.poussin (at) google's mail)
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in sdramliance with the License.
+    You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+*/
+
+/**
+ * @file    hal_sdram.c
+ * @brief   SDRAM Driver code.
+ *
+ * @addtogroup SDRAM
+ * @{
+ */
+
+#include "hal.h"
+
+#if HAL_USE_SDRAM || defined(__DOXYGEN__)
+
+
+/*===========================================================================*/
+/* Driver local definitions.                                                 */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver exported variables.                                                */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local variables and types.                                         */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local functions.                                                   */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver exported functions.                                                */
+/*===========================================================================*/
+
+#include "hal_sdram_lld.h"
+
+/**
+ * @brief   SDRAM Driver initialization.
+ * @note    This function is implicitly invoked by @p halInit(), there is
+ *          no need to explicitly initialize the driver.
+ *
+ * @init
+ */
+void sdramInit(void) {
+  fsmcInit();
+  sdramObjectInit(&SDRAMD1);
+}
+
+/**
+ * @brief   Initializes the standard part of a @p SDRAMDriver structure.
+ *
+ * @param[out] sdramp     pointer to the @p SDRAMDriver object
+ *
+ * @init
+ */
+void sdramObjectInit(SDRAMDriver *sdramp) {
+  
+  sdramp->sdram = FSMCD1.sdram;
+  sdramp->state  = SDRAM_STOP;
+}
+
+/**
+ * @brief   Configures and activates the SDRAM peripheral.
+ *
+ * @param[in] sdramp      pointer to the @p SDRAMDriver object
+ * @param[in] config    pointer to the @p SDRAMConfig object
+ *
+ * @api
+ */
+void sdramStart(SDRAMDriver *sdramp, const SDRAMConfig *config) {
+
+  osalDbgCheck((sdramp != NULL) && (config != NULL));
+
+  if (FSMCD1.state == FSMC_STOP)
+    fsmcStart(&FSMCD1);
+
+  osalSysLock();
+  osalDbgAssert((sdramp->state == SDRAM_STOP) || (sdramp->state == SDRAM_READY),
+              "invalid state");
+  sdram_lld_start(sdramp, config);
+  sdramp->state = SDRAM_READY;
+  osalSysUnlock();
+}
+
+/**
+ * @brief   Deactivates the SDRAM peripheral.
+ *
+ * @param[in] sdramp      pointer to the @p SDRAMDriver object
+ *
+ * @api
+ */
+void sdramStop(SDRAMDriver *sdramp) {
+
+  osalDbgCheck(sdramp != NULL);
+
+  osalSysLock();
+  osalDbgAssert((sdramp->state == SDRAM_STOP) || (sdramp->state == SDRAM_READY),
+              "invalid state");
+  sdram_lld_stop(sdramp);
+  sdramp->state = SDRAM_STOP;
+  osalSysUnlock();
+}
+
+#endif /* HAL_USE_SDRAM */
+
+/** @} */