1 /* 2 * Copyright (c) 2017-2022, Arm Limited. All rights reserved. 3 * Copyright (c) 2020-2022 Cypress Semiconductor Corporation (an Infineon 4 * company) or an affiliate of Cypress Semiconductor Corporation. All rights 5 * reserved. 6 * 7 * SPDX-License-Identifier: BSD-3-Clause 8 * 9 */ 10 11 #ifndef __ITS_FLASH_H__ 12 #define __ITS_FLASH_H__ 13 14 #include "config_tfm.h" 15 #include "its_utils.h" 16 #include "tfm_hal_its.h" 17 #ifdef TFM_PARTITION_PROTECTED_STORAGE 18 #include "tfm_hal_ps.h" 19 #endif 20 21 /* Include the correct flash interface implementation for ITS */ 22 #if ITS_RAM_FS 23 /* RAM FS: use a buffer to emulate storage in RAM */ 24 #include "its_flash_ram.h" 25 extern uint8_t its_block_data[]; 26 #define ITS_FLASH_DEV its_block_data 27 #define ITS_FLASH_ALIGNMENT 1 28 #define ITS_FLASH_OPS its_flash_fs_ops_ram 29 30 #elif (TFM_HAL_ITS_PROGRAM_UNIT > 16) 31 /* NAND flash: each filesystem block is buffered and then programmed in one 32 * shot, so no filesystem data alignment is required. 33 */ 34 #include "its_flash_nand.h" 35 extern struct its_flash_nand_dev_t its_flash_nand_dev; 36 #define ITS_FLASH_DEV its_flash_nand_dev 37 #define ITS_FLASH_ALIGNMENT 1 38 #define ITS_FLASH_OPS its_flash_fs_ops_nand 39 40 #else 41 /* NOR flash: no write buffering, require each file in the filesystem to be 42 * aligned to the program unit. 43 */ 44 #include "its_flash_nor.h" 45 #define ITS_FLASH_DEV TFM_HAL_ITS_FLASH_DRIVER 46 #define ITS_FLASH_ALIGNMENT TFM_HAL_ITS_PROGRAM_UNIT 47 #define ITS_FLASH_OPS its_flash_fs_ops_nor 48 #endif 49 50 /* Include the correct flash interface implementation for PS */ 51 #ifdef TFM_PARTITION_PROTECTED_STORAGE 52 #if PS_RAM_FS 53 /* RAM FS: use a buffer to emulate storage in RAM */ 54 #include "its_flash_ram.h" 55 extern uint8_t ps_block_data[]; 56 #define PS_FLASH_DEV ps_block_data 57 #define PS_FLASH_ALIGNMENT 1 58 #define PS_FLASH_OPS its_flash_fs_ops_ram 59 60 #elif (TFM_HAL_PS_PROGRAM_UNIT > 16) 61 /* NAND flash: each filesystem block is buffered and then programmed in one 62 * shot, so no filesystem data alignment is required. 63 */ 64 #include "its_flash_nand.h" 65 extern struct its_flash_nand_dev_t ps_flash_nand_dev; 66 #define PS_FLASH_DEV ps_flash_nand_dev 67 #define PS_FLASH_ALIGNMENT 1 68 #define PS_FLASH_OPS its_flash_fs_ops_nand 69 70 #else 71 /* NOR flash: no write buffering, require each file in the filesystem to be 72 * aligned to the program unit. 73 */ 74 #include "its_flash_nor.h" 75 #define PS_FLASH_DEV TFM_HAL_PS_FLASH_DRIVER 76 #define PS_FLASH_ALIGNMENT TFM_HAL_PS_PROGRAM_UNIT 77 #define PS_FLASH_OPS its_flash_fs_ops_nor 78 #endif 79 #else /* TFM_PARTITION_PROTECTED_STORAGE */ 80 #define PS_FLASH_ALIGNMENT 1 81 #endif /* TFM_PARTITION_PROTECTED_STORAGE */ 82 83 /** 84 * \brief Provides a compile-time constant for the maximum program unit required 85 * by any flash device that can be accessed through this interface. 86 */ 87 #define ITS_FLASH_MAX_ALIGNMENT ITS_UTILS_MAX(ITS_FLASH_ALIGNMENT, \ 88 PS_FLASH_ALIGNMENT) 89 90 #endif /* __ITS_FLASH_H__ */ 91
