Diff: targets/TARGET_STM/TARGET_STM32F4/TARGET_STM32F439xI/device/flash_api.c

Revision:

169:e3b6fe271b81

Parent:

167:e84263d55307

--- a/targets/TARGET_STM/TARGET_STM32F4/TARGET_STM32F439xI/device/flash_api.c	Thu Jul 06 15:42:05 2017 +0100
+++ b/targets/TARGET_STM/TARGET_STM32F4/TARGET_STM32F439xI/device/flash_api.c	Wed Jul 19 17:31:21 2017 +0100
@@ -1,17 +1,31 @@
 /* mbed Microcontroller Library
- * Copyright (c) 2017 ARM Limited
+ *******************************************************************************
+ * Copyright (c) 2017, STMicroelectronics
+ * All rights reserved.
  *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
  *
- *     http://www.apache.org/licenses/LICENSE-2.0
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
  *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *******************************************************************************
  */
 
 #include "flash_api.h"
@@ -22,57 +36,157 @@
 
 #if DEVICE_FLASH
 
-// This is a flash algo binary blob. It is PIC (position independent code) that should be stored in RAM
-static uint32_t FLASH_ALGO[] = {
-    0xf3c04601, 0x28203007, 0x2204bf24, 0x1050eb02, 0x2810d205, 0x2203bf26, 0x1010eb02, 0xf4110880,
-    0xbf181f80, 0x0010f040, 0x48714770, 0x6001496f, 0x60014970, 0x68014870, 0x01f0f041, 0x486f6001,
-    0xf0106800, 0xd1080f20, 0xf245486d, 0x60015155, 0x60412106, 0x71fff640, 0x20006081, 0x49694770,
-    0xf4206808, 0x600a52f8, 0x48676008, 0xf0416801, 0x60014100, 0x47702000, 0xc18cf8df, 0x0000f8dc,
-    0x0004f040, 0x0000f8cc, 0x0000f8dc, 0x4000f440, 0x0000f8cc, 0x0000f8dc, 0x3080f440, 0x0000f8cc,
-    0x0004f1ac, 0xf4116801, 0xbf1c3f80, 0x21aaf64a, 0xd0044a53, 0x68036011, 0x3f80f413, 0xf8dcd1fa,
-    0xf0200000, 0xf8cc0004, 0xf8dc0000, 0xf4200000, 0xf8cc4000, 0x20000000, 0xf3c04770, 0x29203107,
-    0x2204bf24, 0x1151eb02, 0x2910d205, 0x2203bf26, 0x1111eb02, 0xf4100889, 0xbf181f80, 0x0110f041,
-    0x6802483d, 0x02f0f042, 0xf1006002, 0x22020c04, 0x2000f8cc, 0x2000f8dc, 0xea0323f8, 0x431101c1,
-    0x1000f8cc, 0x1000f8dc, 0x3180f441, 0x1000f8cc, 0xf4116801, 0xbf1c3f80, 0x21aaf64a, 0xd0044a30,
-    0x68036011, 0x3f80f413, 0xf8dcd1fa, 0xf0211000, 0xf8cc0102, 0x68011000, 0x0ff0f011, 0x2000bf04,
-    0x68014770, 0x01f0f041, 0x20016001, 0x4b224770, 0x1cc9b430, 0xc000f8d3, 0x0103f031, 0x0cf0f04c,
-    0xc000f8c3, 0x0404f103, 0x0c00f04f, 0xc000f8c4, 0xf240bf18, 0xd0252501, 0xc000f8d4, 0x0c05ea4c,
-    0xc000f8c4, 0xc000f8d2, 0xc000f8c0, 0xc000f8d3, 0x3f80f41c, 0xf8d4d1fa, 0xf02cc000, 0xf8c40c01,
-    0xf8d3c000, 0xf01cc000, 0xd0060ff0, 0xf0406818, 0x601800f0, 0x2001bc30, 0x1d004770, 0xf1021f09,
-    0xd1d90204, 0x2000bc30, 0x00004770, 0x45670123, 0x40023c04, 0xcdef89ab, 0x40023c0c, 0x40023c14,
-    0x40003000, 0x40023c00, 0x40023c10, 0x00000000
-};
+#if defined (STM32F429xx) || defined (STM32F439xx)
+#define FLASH_SIZE      (uint32_t) 0x200000
+#endif
+
+static uint32_t GetSector(uint32_t Address);
+static uint32_t GetSectorSize(uint32_t Sector);
+
+int32_t flash_init(flash_t *obj)
+{
+    /* Allow Access to Flash control registers and user Falsh */
+    if (HAL_FLASH_Unlock()) {
+        return -1;
+    } else {
+        return 0;
+    }
+}
+int32_t flash_free(flash_t *obj)
+{
+    /* Disable the Flash option control register access (recommended to protect 
+    the option Bytes against possible unwanted operations) */
+    if (HAL_FLASH_Lock()) {
+        return -1;
+    } else {
+        return 0;
+    }
+}
+int32_t flash_erase_sector(flash_t *obj, uint32_t address)
+{
+    /*Variable used for Erase procedure*/
+    static FLASH_EraseInitTypeDef EraseInitStruct;
+    uint32_t FirstSector;
+    uint32_t SectorError = 0;
+ 
+    if ((address >= (FLASH_BASE + FLASH_SIZE)) || (address < FLASH_BASE)) {
+
+        return -1;
+    }
+   
+    /* Get the 1st sector to erase */
+    FirstSector = GetSector(address);
+
+    /* Fill EraseInit structure*/
+    EraseInitStruct.TypeErase = FLASH_TYPEERASE_SECTORS;
+    EraseInitStruct.VoltageRange = FLASH_VOLTAGE_RANGE_3;
+    EraseInitStruct.Sector = FirstSector;
+    EraseInitStruct.NbSectors = 1;
+    if(HAL_FLASHEx_Erase(&EraseInitStruct, &SectorError) != HAL_OK){
+        return -1;
+    } else {
+        return 0;
+    }
+}
+
+int32_t flash_program_page(flash_t *obj, uint32_t address, const uint8_t *data, uint32_t size)
+{
+
+    if ((address >= (FLASH_BASE + FLASH_SIZE)) || (address < FLASH_BASE)) {
+        return -1;
+    }
+
+  /* Note: If an erase operation in Flash memory also concerns data in the data or instruction cache,
+     you have to make sure that these data are rewritten before they are accessed during code
+     execution. If this cannot be done safely, it is recommended to flush the caches by setting the
+     DCRST and ICRST bits in the FLASH_CR register. */
+    __HAL_FLASH_DATA_CACHE_DISABLE();
+    __HAL_FLASH_INSTRUCTION_CACHE_DISABLE();
+
+    __HAL_FLASH_DATA_CACHE_RESET();
+    __HAL_FLASH_INSTRUCTION_CACHE_RESET();
+
+    __HAL_FLASH_INSTRUCTION_CACHE_ENABLE();
+    __HAL_FLASH_DATA_CACHE_ENABLE();
 
-static const flash_algo_t flash_algo_config = {
-    .init = 0x2b,
-    .uninit = 0x5f,
-    .erase_sector = 0xdb,
-    .program_page = 0x16f,
-    .static_base = 0x20c,
-    .algo_blob = FLASH_ALGO
-};
+    while (size > 0) {
+        if (HAL_FLASH_Program(FLASH_TYPEPROGRAM_BYTE, address, (uint64_t)*data) != HAL_OK) {
+            return -1;
+        } else {
+            size--;
+            address++;
+            data++;
+        }
+    }
+    return 0;
+}
+
+uint32_t flash_get_sector_size(const flash_t *obj, uint32_t address)
+{
+    
+    if ((address >= (FLASH_BASE + FLASH_SIZE)) || (address < FLASH_BASE)) {
+        return MBED_FLASH_INVALID_SIZE;
+    }
+
+    return (GetSectorSize(GetSector(address)));
+}
+
+uint32_t flash_get_page_size(const flash_t *obj)
+{
+    // not applicable for STM32F4
+    return (0x4000); // minimum sector size
+}
+uint32_t flash_get_start_address(const flash_t *obj)
+{
+    return FLASH_BASE;
+}
+uint32_t flash_get_size(const flash_t *obj)
+{
+    return FLASH_SIZE;    
+}
 
-static const sector_info_t sectors_info[] = {
-    {0x8000000, 0x4000},
-    {0x8010000, 0x10000},
-    {0x8020000, 0x20000},
-    {0x8100000, 0x4000},
-    {0x8110000, 0x10000},
-    {0x8120000, 0x20000},
-};
+/**
+  * @brief  Gets the sector of a given address
+  * @param  None
+  * @retval The sector of a given address
+  */
+static uint32_t GetSector(uint32_t address)
+{
+    uint32_t sector = 0; 
+    uint32_t tmp = address - ADDR_FLASH_SECTOR_0;
+    if (address & 0x100000) { // handle 2nd bank
+        sector = FLASH_SECTOR_12;
+        tmp = address - ADDR_FLASH_SECTOR_12;
+    }
+    if (address < ADDR_FLASH_SECTOR_4) { // 16k sectorsize
+        //printf("tmp for sectors less than 4: 0X%4x")
+        sector += tmp >>14;
+    } else if (address < ADDR_FLASH_SECTOR_5) { //64k sector size
+        sector += FLASH_SECTOR_4; 
+    } else {
+        sector += 4 + (tmp >>17);
+    }
+    return sector;
+}
 
-static const flash_target_config_t flash_target_config = {
-    .page_size  = 0x400,
-    .flash_start = 0x8000000,
-    .flash_size = 0x200000,
-    .sectors = sectors_info,
-    .sector_info_count = sizeof(sectors_info) / sizeof(sector_info_t)
-};
-
-void flash_set_target_config(flash_t *obj)
+/**
+  * @brief  Gets sector Size
+  * @param  None
+  * @retval The size of a given sector
+  */
+static uint32_t GetSectorSize(uint32_t Sector)
 {
-    obj->flash_algo = &flash_algo_config;
-    obj->target_config = &flash_target_config;
+    uint32_t sectorsize = 0x00;
+    if((Sector == FLASH_SECTOR_0) || (Sector == FLASH_SECTOR_1) || (Sector == FLASH_SECTOR_2) ||\
+       (Sector == FLASH_SECTOR_3) || (Sector == FLASH_SECTOR_12) || (Sector == FLASH_SECTOR_13) ||\
+       (Sector == FLASH_SECTOR_14) || (Sector == FLASH_SECTOR_15)) {
+        sectorsize = 16 * 1024;
+    } else if((Sector == FLASH_SECTOR_4) || (Sector == FLASH_SECTOR_16)){
+        sectorsize = 64 * 1024;
+    } else {
+        sectorsize = 128 * 1024;
+    }  
+    return sectorsize;
 }
 
 #endif