90 lines
2.4 KiB
C
90 lines
2.4 KiB
C
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/*
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* Copyright 2021 NXP
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef _FSL_MEMORY_H_
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#define _FSL_MEMORY_H_
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#include "fsl_common.h"
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/*******************************************************************************
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* Definitions
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******************************************************************************/
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/* Component ID definition, used by tools. */
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#ifndef FSL_COMPONENT_ID
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#define FSL_COMPONENT_ID "platform.drivers.memory"
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#endif
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/* The CM4 subsystem local TCM start address, refer to Reference Manual for detailed information */
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#define FSL_MEM_M4_TCM_BEGIN 0x1FFE0000U
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/* The CM4 subsystem local TCM end address, refer to Reference Manual for detailed information */
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#define FSL_MEM_M4_TCM_END 0x2001FFFFU
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#define FSL_MEM_M4_TCM_OFFSET 0x220000U
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typedef enum _mem_direction
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{
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kMEMORY_Local2DMA = 0,
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kMEMORY_DMA2Local,
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} mem_direction_t;
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/*******************************************************************************
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* API
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******************************************************************************/
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#if defined(__cplusplus)
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extern "C" {
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#endif
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/*!
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* @brief Convert the memory map address.
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*
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* This function convert the address between system mapped address and native mapped address.
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* There maybe offset between subsystem native address and system address for some memory,
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* this funciton convert the address to different memory map.
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* @param addr address need to be converted.
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* @param direction convert direction.
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* @return the converted address
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*/
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static inline uint32_t MEMORY_ConvertMemoryMapAddress(uint32_t addr, mem_direction_t direction)
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{
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uint32_t dest;
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switch (direction)
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{
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case kMEMORY_Local2DMA:
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{
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if ((addr >= FSL_MEM_M4_TCM_BEGIN) && (addr <= FSL_MEM_M4_TCM_END))
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{
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dest = addr + FSL_MEM_M4_TCM_OFFSET;
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}
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else
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{
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dest = addr;
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}
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break;
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}
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case kMEMORY_DMA2Local:
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{
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if ((addr >= (FSL_MEM_M4_TCM_BEGIN + FSL_MEM_M4_TCM_OFFSET)) &&
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(addr <= (FSL_MEM_M4_TCM_END + FSL_MEM_M4_TCM_OFFSET)))
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{
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dest = addr - FSL_MEM_M4_TCM_OFFSET;
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}
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else
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{
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dest = addr;
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}
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break;
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}
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default:
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dest = addr;
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break;
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}
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return dest;
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}
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#if defined(__cplusplus)
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}
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#endif /* __cplusplus */
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#endif /* _FSL_MEMORY_H_ */
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