2 * Copyright (c) 2013-2020 ARM Limited. All rights reserved.
4 * SPDX-License-Identifier: Apache-2.0
6 * Licensed under the Apache License, Version 2.0 (the License); you may
7 * not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
10 * www.apache.org/licenses/LICENSE-2.0
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an AS IS BASIS, WITHOUT
14 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
18 * $Date: 24. January 2020
21 * Project: Flash Driver definitions
26 * Removed volatile from ARM_FLASH_STATUS
28 * Padding bytes added to ARM_FLASH_INFO
30 * ARM_FLASH_STATUS made volatile
32 * Renamed driver NOR -> Flash (more generic)
33 * Non-blocking operation
34 * Added Events, Status and Capabilities
35 * Linked Flash information (GetInfo)
37 * Changed prefix ARM_DRV -> ARM_DRIVER
39 * Namespace prefix ARM_ added
44 #ifndef DRIVER_FLASH_H_
45 #define DRIVER_FLASH_H_
52 #include "Driver_Common.h"
54 #define ARM_FLASH_API_VERSION ARM_DRIVER_VERSION_MAJOR_MINOR(2,3) /* API version */
57 #define _ARM_Driver_Flash_(n) Driver_Flash##n
58 #define ARM_Driver_Flash_(n) _ARM_Driver_Flash_(n)
61 #define ARM_FLASH_SECTOR_INFO(addr,size) { (addr), (addr)+(size)-1 }
64 \brief Flash Sector information
66 typedef struct _ARM_FLASH_SECTOR {
67 uint32_t start; ///< Sector Start address
68 uint32_t end; ///< Sector End address (start+size-1)
69 } const ARM_FLASH_SECTOR;
72 \brief Flash information
74 typedef struct _ARM_FLASH_INFO {
75 ARM_FLASH_SECTOR *sector_info; ///< Sector layout information (NULL=Uniform sectors)
76 uint32_t sector_count; ///< Number of sectors
77 uint32_t sector_size; ///< Uniform sector size in bytes (0=sector_info used)
78 uint32_t page_size; ///< Optimal programming page size in bytes
79 uint32_t program_unit; ///< Smallest programmable unit in bytes
80 uint8_t erased_value; ///< Contents of erased memory (usually 0xFF)
81 uint8_t reserved[3]; ///< Reserved (must be zero)
82 } const ARM_FLASH_INFO;
88 typedef struct _ARM_FLASH_STATUS {
89 uint32_t busy : 1; ///< Flash busy flag
90 uint32_t error : 1; ///< Read/Program/Erase error flag (cleared on start of next operation)
91 uint32_t reserved : 30;
95 /****** Flash Event *****/
96 #define ARM_FLASH_EVENT_READY (1UL << 0) ///< Flash Ready
97 #define ARM_FLASH_EVENT_ERROR (1UL << 1) ///< Read/Program/Erase Error
100 // Function documentation
102 \fn ARM_DRIVER_VERSION ARM_Flash_GetVersion (void)
103 \brief Get driver version.
104 \return \ref ARM_DRIVER_VERSION
107 \fn ARM_FLASH_CAPABILITIES ARM_Flash_GetCapabilities (void)
108 \brief Get driver capabilities.
109 \return \ref ARM_FLASH_CAPABILITIES
112 \fn int32_t ARM_Flash_Initialize (ARM_Flash_SignalEvent_t cb_event)
113 \brief Initialize the Flash Interface.
114 \param[in] cb_event Pointer to \ref ARM_Flash_SignalEvent
115 \return \ref execution_status
118 \fn int32_t ARM_Flash_Uninitialize (void)
119 \brief De-initialize the Flash Interface.
120 \return \ref execution_status
123 \fn int32_t ARM_Flash_PowerControl (ARM_POWER_STATE state)
124 \brief Control the Flash interface power.
125 \param[in] state Power state
126 \return \ref execution_status
129 \fn int32_t ARM_Flash_ReadData (uint32_t addr, void *data, uint32_t cnt)
130 \brief Read data from Flash.
131 \param[in] addr Data address.
132 \param[out] data Pointer to a buffer storing the data read from Flash.
133 \param[in] cnt Number of data items to read.
134 \return number of data items read or \ref execution_status
137 \fn int32_t ARM_Flash_ProgramData (uint32_t addr, const void *data, uint32_t cnt)
138 \brief Program data to Flash.
139 \param[in] addr Data address.
140 \param[in] data Pointer to a buffer containing the data to be programmed to Flash.
141 \param[in] cnt Number of data items to program.
142 \return number of data items programmed or \ref execution_status
145 \fn int32_t ARM_Flash_EraseSector (uint32_t addr)
146 \brief Erase Flash Sector.
147 \param[in] addr Sector address
148 \return \ref execution_status
151 \fn int32_t ARM_Flash_EraseChip (void)
152 \brief Erase complete Flash.
153 Optional function for faster full chip erase.
154 \return \ref execution_status
157 \fn ARM_FLASH_STATUS ARM_Flash_GetStatus (void)
158 \brief Get Flash status.
159 \return Flash status \ref ARM_FLASH_STATUS
162 \fn ARM_FLASH_INFO * ARM_Flash_GetInfo (void)
163 \brief Get Flash information.
164 \return Pointer to Flash information \ref ARM_FLASH_INFO
168 \fn void ARM_Flash_SignalEvent (uint32_t event)
169 \brief Signal Flash event.
170 \param[in] event Event notification mask
174 typedef void (*ARM_Flash_SignalEvent_t) (uint32_t event); ///< Pointer to \ref ARM_Flash_SignalEvent : Signal Flash Event.
178 \brief Flash Driver Capabilities.
180 typedef struct _ARM_FLASH_CAPABILITIES {
181 uint32_t event_ready : 1; ///< Signal Flash Ready event
182 uint32_t data_width : 2; ///< Data width: 0=8-bit, 1=16-bit, 2=32-bit
183 uint32_t erase_chip : 1; ///< Supports EraseChip operation
184 uint32_t reserved : 28; ///< Reserved (must be zero)
185 } ARM_FLASH_CAPABILITIES;
189 \brief Access structure of the Flash Driver
191 typedef struct _ARM_DRIVER_FLASH {
192 ARM_DRIVER_VERSION (*GetVersion) (void); ///< Pointer to \ref ARM_Flash_GetVersion : Get driver version.
193 ARM_FLASH_CAPABILITIES (*GetCapabilities)(void); ///< Pointer to \ref ARM_Flash_GetCapabilities : Get driver capabilities.
194 int32_t (*Initialize) (ARM_Flash_SignalEvent_t cb_event); ///< Pointer to \ref ARM_Flash_Initialize : Initialize Flash Interface.
195 int32_t (*Uninitialize) (void); ///< Pointer to \ref ARM_Flash_Uninitialize : De-initialize Flash Interface.
196 int32_t (*PowerControl) (ARM_POWER_STATE state); ///< Pointer to \ref ARM_Flash_PowerControl : Control Flash Interface Power.
197 int32_t (*ReadData) (uint32_t addr, void *data, uint32_t cnt); ///< Pointer to \ref ARM_Flash_ReadData : Read data from Flash.
198 int32_t (*ProgramData) (uint32_t addr, const void *data, uint32_t cnt); ///< Pointer to \ref ARM_Flash_ProgramData : Program data to Flash.
199 int32_t (*EraseSector) (uint32_t addr); ///< Pointer to \ref ARM_Flash_EraseSector : Erase Flash Sector.
200 int32_t (*EraseChip) (void); ///< Pointer to \ref ARM_Flash_EraseChip : Erase complete Flash.
201 ARM_FLASH_STATUS (*GetStatus) (void); ///< Pointer to \ref ARM_Flash_GetStatus : Get Flash status.
202 ARM_FLASH_INFO * (*GetInfo) (void); ///< Pointer to \ref ARM_Flash_GetInfo : Get Flash information.
203 } const ARM_DRIVER_FLASH;
209 #endif /* DRIVER_FLASH_H_ */