| Kuldeep Singh | 5a0f9da | 2020-12-09 14:02:39 +0530 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2021 NXP |
| 3 | * |
| 4 | * SPDX-License-Identifier: BSD-3-Clause |
| 5 | * |
| 6 | */ |
| 7 | |
| 8 | |
| 9 | /*! |
| 10 | * @file fspi_api.h |
| 11 | * @brief This file contains the FlexSPI/FSPI API to communicate |
| 12 | * to attached Slave device. |
| 13 | * @addtogroup FSPI_API |
| 14 | * @{ |
| 15 | */ |
| 16 | |
| 17 | #ifndef FSPI_API_H |
| 18 | #define FSPI_API_H |
| 19 | |
| 20 | #if DEBUG_FLEXSPI |
| 21 | #define SZ_57M 0x3900000u |
| 22 | #endif |
| 23 | |
| 24 | /*! |
| 25 | * Basic set of APIs. |
| 26 | */ |
| 27 | |
| 28 | /*! |
| 29 | * @details AHB read/IP Read, decision to be internal to API |
| 30 | * Minimum Read size = 1Byte |
| 31 | * @param[in] src_off source offset from where data to read from flash |
| 32 | * @param[out] des Destination location where data needs to be copied |
| 33 | * @param[in] len length in Bytes,where 1-word=4-bytes/32-bits |
| 34 | * |
| 35 | * @return XSPI_SUCCESS or error code |
| 36 | */ |
| 37 | int xspi_read(uint32_t src_off, uint32_t *des, uint32_t len); |
| 38 | /*! |
| 39 | * @details Sector erase, Minimum size |
| 40 | * 256KB(0x40000)/128KB(0x20000)/64K(0x10000)/4K(0x1000) |
| 41 | * depending upon flash, Calls xspi_wren() internally |
| 42 | * @param[out] erase_offset Destination erase location on flash which |
| 43 | * has to be erased, needs to be multiple of 0x40000/0x20000/0x10000 |
| 44 | * @param[in] erase_len length in bytes in Hex like 0x100000 for 1MB, minimum |
| 45 | * erase size is 1 sector(0x40000/0x20000/0x10000) |
| 46 | * |
| 47 | * @return XSPI_SUCCESS or error code |
| 48 | */ |
| 49 | int xspi_sector_erase(uint32_t erase_offset, uint32_t erase_len); |
| 50 | /*! |
| 51 | * @details IP write, For writing data to flash, calls xspi_wren() internally. |
| 52 | * Single/multiple page write can start @any offset, but performance will be low |
| 53 | * due to ERRATA |
| 54 | * @param[out] dst_off Destination location on flash where data needs to |
| 55 | * be written |
| 56 | * @param[in] src source offset from where data to be read |
| 57 | * @param[in] len length in bytes,where 1-word=4-bytes/32-bits |
| 58 | * |
| 59 | * @return XSPI_SUCCESS or error code |
| 60 | */ |
| 61 | int xspi_write(uint32_t dst_off, void *src, uint32_t len); |
| 62 | /*! |
| 63 | * @details fspi_init, Init function. |
| 64 | * @param[in] uint32_t base_reg_addr |
| 65 | * @param[in] uint32_t flash_start_addr |
| 66 | * |
| 67 | * @return XSPI_SUCCESS or error code |
| 68 | */ |
| 69 | int fspi_init(uint32_t base_reg_addr, uint32_t flash_start_addr); |
| 70 | /*! |
| 71 | * @details is_flash_busy, Check if any erase or write or lock is |
| 72 | * pending on flash/slave |
| 73 | * @param[in] void |
| 74 | * |
| 75 | * @return TRUE/FLASE |
| 76 | */ |
| 77 | bool is_flash_busy(void); |
| 78 | |
| 79 | /*! |
| 80 | * Advanced set of APIs. |
| 81 | */ |
| 82 | |
| 83 | /*! |
| 84 | * @details Write enable, to be used by advance users only. |
| 85 | * Step 1 for sending write commands to flash. |
| 86 | * @param[in] dst_off destination offset where data will be written |
| 87 | * |
| 88 | * @return XSPI_SUCCESS or error code |
| 89 | */ |
| 90 | int xspi_wren(uint32_t dst_off); |
| 91 | /*! |
| 92 | * @details AHB read, meaning direct memory mapped access to flash, |
| 93 | * Minimum Read size = 1Byte |
| 94 | * @param[in] src_off source offset from where data to read from flash, |
| 95 | * needs to be word aligned |
| 96 | * @param[out] des Destination location where data needs to be copied |
| 97 | * @param[in] len length in Bytes,where 1-word=4-bytes/32-bits |
| 98 | * |
| 99 | * @return XSPI_SUCCESS or error code |
| 100 | */ |
| 101 | int xspi_ahb_read(uint32_t src_off, uint32_t *des, uint32_t len); |
| 102 | /*! |
| 103 | * @details IP read, READ via RX buffer from flash, minimum READ size = 1Byte |
| 104 | * @param[in] src_off source offset from where data to be read from flash |
| 105 | * @param[out] des Destination location where data needs to be copied |
| 106 | * @param[in] len length in Bytes,where 1-word=4-bytes/32-bits |
| 107 | * |
| 108 | * @return XSPI_SUCCESS or error code |
| 109 | */ |
| 110 | int xspi_ip_read(uint32_t src_off, uint32_t *des, uint32_t len); |
| 111 | /*! |
| 112 | * @details CHIP erase, Erase complete chip in one go |
| 113 | * |
| 114 | * @return XSPI_SUCCESS or error code |
| 115 | */ |
| 116 | int xspi_bulk_erase(void); |
| 117 | |
| 118 | /*! |
| 119 | * Add test cases to confirm flash read/erase/write functionality. |
| 120 | */ |
| 121 | void fspi_test(uint32_t fspi_test_addr, uint32_t size, int extra); |
| 122 | #endif /* FSPI_API_H */ |