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