1 files changed, 108 insertions, 0 deletions

diff --git a/lib/chibios-contrib/ext/mcux-sdk/devices/MIMX8QX4/drivers/fsl_memory.h b/lib/chibios-contrib/ext/mcux-sdk/devices/MIMX8QX4/drivers/fsl_memory.h
new file mode 100644
index 000000000..566dccb7d
--- /dev/null
+++ b/lib/chibios-contrib/ext/mcux-sdk/devices/MIMX8QX4/drivers/fsl_memory.h
@@ -0,0 +1,108 @@
+/*
+ * Copyright 2017-2018 NXP
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef _FSL_MEMORY_H_
+#define _FSL_MEMORY_H_
+
+#include "fsl_common.h"
+
+/*******************************************************************************
+ * Definitions
+ ******************************************************************************/
+/* Component ID definition, used by tools. */
+#ifndef FSL_COMPONENT_ID
+#define FSL_COMPONENT_ID "platform.drivers.memory"
+#endif
+/* The CM4 subsystem local TCM start address, refer to Reference Manual for detailed information */
+#define FSL_MEM_M4_TCM_BEGIN 0x1FFE0000U
+/* The CM4 subsystem local TCM end address, refer to Reference Manual for detailed information */
+#define FSL_MEM_M4_TCM_END 0x2001FFFFU
+
+/* The alias start address for CM4 subsystem */
+#define FSL_MEM_M4_ALIAS_BEGIN 0x21000000U
+/* The alias end address for CM4 subsystem */
+#define FSL_MEM_M4_ALIAS_END 0x211FFFFFU
+/*
+  This alias allows the ROM and OCRAM to be mapped to the CM4 system address space without the need
+  to enable and configure SMMU.
+  System-level address 0x0000_0000 to 0x001F_FFFF is mapped to the CM4 system address space 0x2100_0000 to 0x211F_FFFF
+*/
+#define FSL_MEM_M4_ALIAS_OFFSET 0x21000000U
+
+#define FSL_MEM_M4_TCM_OFFSET 0x15000000U
+
+typedef enum _mem_direction
+{
+    kMEMORY_Local2DMA = 0,
+    kMEMORY_DMA2Local,
+} mem_direction_t;
+
+/*******************************************************************************
+ * API
+ ******************************************************************************/
+#if defined(__cplusplus)
+extern "C" {
+#endif
+/*!
+ * @brief Convert the memory map address.
+ *
+ * This function convert the address between system mapped address and native mapped address.
+ * There maybe offset between subsystem native address and system address for some memory,
+ * this funciton convert the address to different memory map.
+ * @param addr address need to be converted.
+ * @param direction convert direction.
+ * @return the converted address
+ */
+static inline uint32_t MEMORY_ConvertMemoryMapAddress(uint32_t addr, mem_direction_t direction)
+{
+    uint32_t dest;
+    
+    switch (direction)
+    {
+        case kMEMORY_Local2DMA:
+        {
+            if ((addr >= FSL_MEM_M4_TCM_BEGIN) && (addr <= FSL_MEM_M4_TCM_END))
+            {
+                dest = addr + FSL_MEM_M4_TCM_OFFSET;
+            }
+            else if ((addr >= FSL_MEM_M4_ALIAS_BEGIN) && (addr <= FSL_MEM_M4_ALIAS_END))
+            {
+                dest = addr - FSL_MEM_M4_ALIAS_OFFSET;
+            }
+            else
+            {
+                dest = addr;
+            }
+            break;
+        }
+        case kMEMORY_DMA2Local:
+        {
+            if ((addr >= (FSL_MEM_M4_TCM_BEGIN + FSL_MEM_M4_TCM_OFFSET)) &&
+                (addr <= (FSL_MEM_M4_TCM_END + FSL_MEM_M4_TCM_OFFSET)))
+            {
+                dest = addr - FSL_MEM_M4_TCM_OFFSET;
+            }
+            else if (addr <= (FSL_MEM_M4_ALIAS_END - FSL_MEM_M4_ALIAS_OFFSET))
+            {
+                dest = addr + FSL_MEM_M4_ALIAS_OFFSET;
+            }
+            else
+            {
+                dest = addr;
+            }
+            break;
+        }
+        default:
+            dest = addr;
+            break;
+    }
+
+    return dest;
+}
+#if defined(__cplusplus)
+}
+#endif /* __cplusplus */
+#endif /* _FSL_MEMORY_H_ */