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
36 #include "Driver_Common.h"
38 #define ARM_FLASH_API_VERSION ARM_DRIVER_VERSION_MAJOR_MINOR(2,00) /* API version */
41 #define _ARM_Driver_Flash_(n) Driver_Flash##n
42 #define ARM_Driver_Flash_(n) _ARM_Driver_Flash_(n)
45 #define ARM_FLASH_SECTOR_INFO(addr,size) { (addr), (addr)+(size)-1 }
48 \brief Flash Sector information
50 typedef struct _ARM_FLASH_SECTOR {
51 uint32_t start; ///< Sector Start address
52 uint32_t end; ///< Sector End address (start+size-1)
53 } const ARM_FLASH_SECTOR;
56 \brief Flash information
58 typedef struct _ARM_FLASH_INFO {
59 ARM_FLASH_SECTOR *sector_info; ///< Sector layout information (NULL=Uniform sectors)
60 uint32_t sector_count; ///< Number of sectors
61 uint32_t sector_size; ///< Uniform sector size in bytes (0=sector_info used)
62 uint32_t page_size; ///< Optimal programming page size in bytes
63 uint32_t program_unit; ///< Smallest programmable unit in bytes
64 uint8_t erased_value; ///< Contents of erased memory (usually 0xFF)
65 } const ARM_FLASH_INFO;
71 typedef struct _ARM_FLASH_STATUS {
72 uint32_t busy : 1; ///< Flash busy flag
73 uint32_t error : 1; ///< Read/Program/Erase error flag (cleared on start of next operation)
77 /****** Flash Event *****/
78 #define ARM_FLASH_EVENT_READY (1UL << 0) ///< Flash Ready
79 #define ARM_FLASH_EVENT_ERROR (1UL << 1) ///< Read/Program/Erase Error
82 // Function documentation
84 \fn ARM_DRIVER_VERSION ARM_Flash_GetVersion (void)
85 \brief Get driver version.
86 \return \ref ARM_DRIVER_VERSION
89 \fn ARM_FLASH_CAPABILITIES ARM_Flash_GetCapabilities (void)
90 \brief Get driver capabilities.
91 \return \ref ARM_FLASH_CAPABILITIES
94 \fn int32_t ARM_Flash_Initialize (ARM_Flash_SignalEvent_t cb_event)
95 \brief Initialize the Flash Interface.
96 \param[in] cb_event Pointer to \ref ARM_Flash_SignalEvent
97 \return \ref execution_status
100 \fn int32_t ARM_Flash_Uninitialize (void)
101 \brief De-initialize the Flash Interface.
102 \return \ref execution_status
105 \fn int32_t ARM_Flash_PowerControl (ARM_POWER_STATE state)
106 \brief Control the Flash interface power.
107 \param[in] state Power state
108 \return \ref execution_status
111 \fn int32_t ARM_Flash_ReadData (uint32_t addr, void *data, uint32_t cnt)
112 \brief Read data from Flash.
113 \param[in] addr Data address.
114 \param[out] data Pointer to a buffer storing the data read from Flash.
115 \param[in] cnt Number of data items to read.
116 \return number of data items read or \ref execution_status
119 \fn int32_t ARM_Flash_ProgramData (uint32_t addr, const void *data, uint32_t cnt)
120 \brief Program data to Flash.
121 \param[in] addr Data address.
122 \param[in] data Pointer to a buffer containing the data to be programmed to Flash.
123 \param[in] cnt Number of data items to program.
124 \return number of data items programmed or \ref execution_status
127 \fn int32_t ARM_Flash_EraseSector (uint32_t addr)
128 \brief Erase Flash Sector.
129 \param[in] addr Sector address
130 \return \ref execution_status
133 \fn int32_t ARM_Flash_EraseChip (void)
134 \brief Erase complete Flash.
135 Optional function for faster full chip erase.
136 \return \ref execution_status
139 \fn ARM_FLASH_STATUS ARM_Flash_GetStatus (void)
140 \brief Get Flash status.
141 \return Flash status \ref ARM_FLASH_STATUS
144 \fn ARM_FLASH_INFO * ARM_Flash_GetInfo (void)
145 \brief Get Flash information.
146 \return Pointer to Flash information \ref ARM_FLASH_INFO
150 \fn void ARM_Flash_SignalEvent (uint32_t event)
151 \brief Signal Flash event.
152 \param[in] event Event notification mask
156 typedef void (*ARM_Flash_SignalEvent_t) (uint32_t event); ///< Pointer to \ref ARM_Flash_SignalEvent : Signal Flash Event.
160 \brief Flash Driver Capabilities.
162 typedef struct _ARM_FLASH_CAPABILITIES {
163 uint32_t event_ready : 1; ///< Signal Flash Ready event
164 uint32_t data_width : 2; ///< Data width: 0=8-bit, 1=16-bit, 2=32-bit
165 uint32_t erase_chip : 1; ///< Supports EraseChip operation
166 } ARM_FLASH_CAPABILITIES;
170 \brief Access structure of the Flash Driver
172 typedef struct _ARM_DRIVER_FLASH {
173 ARM_DRIVER_VERSION (*GetVersion) (void); ///< Pointer to \ref ARM_Flash_GetVersion : Get driver version.
174 ARM_FLASH_CAPABILITIES (*GetCapabilities)(void); ///< Pointer to \ref ARM_Flash_GetCapabilities : Get driver capabilities.
175 int32_t (*Initialize) (ARM_Flash_SignalEvent_t cb_event); ///< Pointer to \ref ARM_Flash_Initialize : Initialize Flash Interface.
176 int32_t (*Uninitialize) (void); ///< Pointer to \ref ARM_Flash_Uninitialize : De-initialize Flash Interface.
177 int32_t (*PowerControl) (ARM_POWER_STATE state); ///< Pointer to \ref ARM_Flash_PowerControl : Control Flash Interface Power.
178 int32_t (*ReadData) (uint32_t addr, void *data, uint32_t cnt); ///< Pointer to \ref ARM_Flash_ReadData : Read data from Flash.
179 int32_t (*ProgramData) (uint32_t addr, const void *data, uint32_t cnt); ///< Pointer to \ref ARM_Flash_ProgramData : Program data to Flash.
180 int32_t (*EraseSector) (uint32_t addr); ///< Pointer to \ref ARM_Flash_EraseSector : Erase Flash Sector.
181 int32_t (*EraseChip) (void); ///< Pointer to \ref ARM_Flash_EraseChip : Erase complete Flash.
182 ARM_FLASH_STATUS (*GetStatus) (void); ///< Pointer to \ref ARM_Flash_GetStatus : Get Flash status.
183 ARM_FLASH_INFO * (*GetInfo) (void); ///< Pointer to \ref ARM_Flash_GetInfo : Get Flash information.
184 } const ARM_DRIVER_FLASH;
186 #endif /* __DRIVER_FLASH_H */