112 lines
2.5 KiB
C
112 lines
2.5 KiB
C
/***************************************************************************
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*
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* Copyright 2015-2019 BES.
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* All rights reserved. All unpublished rights reserved.
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*
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* No part of this work may be used or reproduced in any form or by any
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* means, or stored in a database or retrieval system, without prior written
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* permission of BES.
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*
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* Use of this work is governed by a license granted by BES.
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* This work contains confidential and proprietary information of
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* BES. which is protected by copyright, trade secret,
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* trademark and other intellectual property rights.
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*
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****************************************************************************/
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#ifndef __MPU_H__
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#define __MPU_H__
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#include "plat_types.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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enum MPU_ID_T {
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MPU_ID_NULL_POINTER = 0,
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MPU_ID_1,
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MPU_ID_2,
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MPU_ID_3,
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MPU_ID_4,
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MPU_ID_5,
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MPU_ID_6,
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MPU_ID_7,
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MPU_ID_QTY,
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};
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/*mcu sections */
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#define MPU_ID_USER_DATA_SECTION MPU_ID_1
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#define MPU_ID_FRAM_TEXT1 MPU_ID_2
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#define MPU_ID_FRAM_TEXT2 MPU_ID_3
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#define MPU_ID_CODE MPU_ID_4
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#define MPU_ID_SRAM_TEXT MPU_ID_5
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/*cp sections */
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#define MPU_ID_CP_FLASHX MPU_ID_2
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#define MPU_ID_CP_FLASH MPU_ID_3
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#define MPU_ID_CP_FLASH_NC MPU_ID_4
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enum MPU_ATTR_T {
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MPU_ATTR_READ_WRITE_EXEC = 0,
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MPU_ATTR_READ_EXEC,
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MPU_ATTR_EXEC,
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MPU_ATTR_READ_WRITE,
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MPU_ATTR_READ,
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MPU_ATTR_NO_ACCESS,
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MPU_ATTR_QTY,
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};
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#if defined(__ARM_ARCH_8M_MAIN__)
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enum MAIR_ATTR_TYPE_T {
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MAIR_ATTR_FLASH,
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MAIR_ATTR_INT_SRAM,
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MAIR_ATTR_EXT_SRAM,
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MAIR_ATTR_DEVICE,
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MAIR_ATTR_4,
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MAIR_ATTR_5,
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MAIR_ATTR_6,
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MAIR_ATTR_7,
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MAIR_ATTR_QTY,
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};
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#endif
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typedef struct
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{
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uint32_t addr;
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uint32_t len;
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enum MPU_ATTR_T ap_attr;
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#if defined(__ARM_ARCH_8M_MAIN__)
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enum MAIR_ATTR_TYPE_T mem_attr;
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#endif
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} mpu_regions_t;
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int mpu_open(void);
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int mpu_close(void);
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// VALID LENGTH: 32, 64, 128, 256, 512, 1K, 2K, ..., 4G
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// ADDR must be aligned to len
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// Note, srd_bits, mpu subregion bits, which can be divided to 8 sub regions
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// per region, if don't need, always set the arguments to 0;
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int mpu_set(enum MPU_ID_T id, uint32_t addr, uint32_t len, int srd_bits,
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enum MPU_ATTR_T attr);
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int mpu_clear(enum MPU_ID_T id);
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/*mpu setup for mcu */
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int mpu_setup(void);
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/*mpu setup for cp mcu */
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int mpu_setup_cp(const mpu_regions_t *mpu_table, uint32_t region_num);
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#ifdef __cplusplus
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}
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#endif
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#endif
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