2 * Copyright (c) 2013-2016 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 * http://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.
21 * Renamed driver NOR -> Flash (more generic)
22 * Non-blocking operation
23 * Added Events, Status and Capabilities
24 * Linked Flash information (GetInfo)
26 * Changed prefix ARM_DRV -> ARM_DRIVER
28 * Namespace prefix ARM_ added
33 #ifndef DRIVER_FLASH_H_
34 #define DRIVER_FLASH_H_
41 #include "Driver_Common.h"
43 #define ARM_FLASH_API_VERSION ARM_DRIVER_VERSION_MAJOR_MINOR(2,00) /* API version */
46 #define _ARM_Driver_Flash_(n) Driver_Flash##n
47 #define ARM_Driver_Flash_(n) _ARM_Driver_Flash_(n)
50 #define ARM_FLASH_SECTOR_INFO(addr,size) { (addr), (addr)+(size)-1 }
53 \brief Flash Sector information
55 typedef struct _ARM_FLASH_SECTOR {
56 uint32_t start; ///< Sector Start address
57 uint32_t end; ///< Sector End address (start+size-1)
58 } const ARM_FLASH_SECTOR;
61 \brief Flash information
63 typedef struct _ARM_FLASH_INFO {
64 ARM_FLASH_SECTOR *sector_info; ///< Sector layout information (NULL=Uniform sectors)
65 uint32_t sector_count; ///< Number of sectors
66 uint32_t sector_size; ///< Uniform sector size in bytes (0=sector_info used)
67 uint32_t page_size; ///< Optimal programming page size in bytes
68 uint32_t program_unit; ///< Smallest programmable unit in bytes
69 uint8_t erased_value; ///< Contents of erased memory (usually 0xFF)
70 } const ARM_FLASH_INFO;
76 typedef struct _ARM_FLASH_STATUS {
77 uint32_t busy : 1; ///< Flash busy flag
78 uint32_t error : 1; ///< Read/Program/Erase error flag (cleared on start of next operation)
82 /****** Flash Event *****/
83 #define ARM_FLASH_EVENT_READY (1UL << 0) ///< Flash Ready
84 #define ARM_FLASH_EVENT_ERROR (1UL << 1) ///< Read/Program/Erase Error
87 // Function documentation
89 \fn ARM_DRIVER_VERSION ARM_Flash_GetVersion (void)
90 \brief Get driver version.
91 \return \ref ARM_DRIVER_VERSION
94 \fn ARM_FLASH_CAPABILITIES ARM_Flash_GetCapabilities (void)
95 \brief Get driver capabilities.
96 \return \ref ARM_FLASH_CAPABILITIES
99 \fn int32_t ARM_Flash_Initialize (ARM_Flash_SignalEvent_t cb_event)
100 \brief Initialize the Flash Interface.
101 \param[in] cb_event Pointer to \ref ARM_Flash_SignalEvent
102 \return \ref execution_status
105 \fn int32_t ARM_Flash_Uninitialize (void)
106 \brief De-initialize the Flash Interface.
107 \return \ref execution_status
110 \fn int32_t ARM_Flash_PowerControl (ARM_POWER_STATE state)
111 \brief Control the Flash interface power.
112 \param[in] state Power state
113 \return \ref execution_status
116 \fn int32_t ARM_Flash_ReadData (uint32_t addr, void *data, uint32_t cnt)
117 \brief Read data from Flash.
118 \param[in] addr Data address.
119 \param[out] data Pointer to a buffer storing the data read from Flash.
120 \param[in] cnt Number of data items to read.
121 \return number of data items read or \ref execution_status
124 \fn int32_t ARM_Flash_ProgramData (uint32_t addr, const void *data, uint32_t cnt)
125 \brief Program data to Flash.
126 \param[in] addr Data address.
127 \param[in] data Pointer to a buffer containing the data to be programmed to Flash.
128 \param[in] cnt Number of data items to program.
129 \return number of data items programmed or \ref execution_status
132 \fn int32_t ARM_Flash_EraseSector (uint32_t addr)
133 \brief Erase Flash Sector.
134 \param[in] addr Sector address
135 \return \ref execution_status
138 \fn int32_t ARM_Flash_EraseChip (void)
139 \brief Erase complete Flash.
140 Optional function for faster full chip erase.
141 \return \ref execution_status
144 \fn ARM_FLASH_STATUS ARM_Flash_GetStatus (void)
145 \brief Get Flash status.
146 \return Flash status \ref ARM_FLASH_STATUS
149 \fn ARM_FLASH_INFO * ARM_Flash_GetInfo (void)
150 \brief Get Flash information.
151 \return Pointer to Flash information \ref ARM_FLASH_INFO
155 \fn void ARM_Flash_SignalEvent (uint32_t event)
156 \brief Signal Flash event.
157 \param[in] event Event notification mask
161 typedef void (*ARM_Flash_SignalEvent_t) (uint32_t event); ///< Pointer to \ref ARM_Flash_SignalEvent : Signal Flash Event.
165 \brief Flash Driver Capabilities.
167 typedef struct _ARM_FLASH_CAPABILITIES {
168 uint32_t event_ready : 1; ///< Signal Flash Ready event
169 uint32_t data_width : 2; ///< Data width: 0=8-bit, 1=16-bit, 2=32-bit
170 uint32_t erase_chip : 1; ///< Supports EraseChip operation
171 } ARM_FLASH_CAPABILITIES;
175 \brief Access structure of the Flash Driver
177 typedef struct _ARM_DRIVER_FLASH {
178 ARM_DRIVER_VERSION (*GetVersion) (void); ///< Pointer to \ref ARM_Flash_GetVersion : Get driver version.
179 ARM_FLASH_CAPABILITIES (*GetCapabilities)(void); ///< Pointer to \ref ARM_Flash_GetCapabilities : Get driver capabilities.
180 int32_t (*Initialize) (ARM_Flash_SignalEvent_t cb_event); ///< Pointer to \ref ARM_Flash_Initialize : Initialize Flash Interface.
181 int32_t (*Uninitialize) (void); ///< Pointer to \ref ARM_Flash_Uninitialize : De-initialize Flash Interface.
182 int32_t (*PowerControl) (ARM_POWER_STATE state); ///< Pointer to \ref ARM_Flash_PowerControl : Control Flash Interface Power.
183 int32_t (*ReadData) (uint32_t addr, void *data, uint32_t cnt); ///< Pointer to \ref ARM_Flash_ReadData : Read data from Flash.
184 int32_t (*ProgramData) (uint32_t addr, const void *data, uint32_t cnt); ///< Pointer to \ref ARM_Flash_ProgramData : Program data to Flash.
185 int32_t (*EraseSector) (uint32_t addr); ///< Pointer to \ref ARM_Flash_EraseSector : Erase Flash Sector.
186 int32_t (*EraseChip) (void); ///< Pointer to \ref ARM_Flash_EraseChip : Erase complete Flash.
187 ARM_FLASH_STATUS (*GetStatus) (void); ///< Pointer to \ref ARM_Flash_GetStatus : Get Flash status.
188 ARM_FLASH_INFO * (*GetInfo) (void); ///< Pointer to \ref ARM_Flash_GetInfo : Get Flash information.
189 } const ARM_DRIVER_FLASH;
195 #endif /* DRIVER_FLASH_H_ */