1 /* 2 * Copyright (C) 2017 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY MATTHIAS RINGWALD AND CONTRIBUTORS 18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 20 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS 21 * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 23 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 24 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 25 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 27 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 */ 31 32 /* 33 * hal_flash_bank_stm32.c 34 * 35 * HAL abstraction for Flash memory that can be written anywhere 36 * after being erased 37 */ 38 39 #include <stdint.h> 40 #include <string.h> // memcpy 41 42 #include "hal_flash_bank_msp432.h" 43 #include "driverlib.h" 44 #include "btstack_defines.h" 45 46 static uint32_t hal_flash_bank_msp432_get_size(void * context){ 47 hal_flash_bank_msp432_t * self = (hal_flash_bank_msp432_t *) context; 48 return self->sector_size; 49 } 50 51 static uint32_t hal_flash_bank_memory_msp432_get_alignment(void * context){ 52 UNUSED(context); 53 return 4; 54 } 55 56 static void hal_flash_bank_msp432_erase(void * context, int bank){ 57 58 hal_flash_bank_msp432_t * self = (hal_flash_bank_msp432_t *) context; 59 if (bank > 1) return; 60 61 /* Unprotecting sector */ 62 MAP_FlashCtl_unprotectSector(FLASH_MAIN_MEMORY_SPACE_BANK1,self->sectors[bank]); 63 64 /* Trying to erase the sector. Within this function, the API will 65 automatically try to erase the maximum number of tries. If it fails, 66 trap in an infinite loop */ 67 if(!MAP_FlashCtl_eraseSector(self->banks[bank])) 68 while(1); 69 70 /* Setting the sector back to protected */ 71 MAP_FlashCtl_protectSector(FLASH_MAIN_MEMORY_SPACE_BANK1,self->sectors[bank]); 72 } 73 74 static void hal_flash_bank_msp432_read(void * context, int bank, uint32_t offset, uint8_t * buffer, uint32_t size){ 75 hal_flash_bank_msp432_t * self = (hal_flash_bank_msp432_t *) context; 76 77 if (bank > 1) return; 78 if (offset > self->sector_size) return; 79 if ((offset + size) > self->sector_size) return; 80 81 memcpy(buffer, ((uint8_t *) self->banks[bank]) + offset, size); 82 } 83 84 static void hal_flash_bank_msp432_write(void * context, int bank, uint32_t offset, const uint8_t * data, uint32_t size){ 85 hal_flash_bank_msp432_t * self = (hal_flash_bank_msp432_t *) context; 86 87 if (bank > 1) return; 88 if (offset > self->sector_size) return; 89 if ((offset + size) > self->sector_size) return; 90 91 /* Unprotecting sector */ 92 MAP_FlashCtl_unprotectSector(FLASH_MAIN_MEMORY_SPACE_BANK1,self->sectors[bank]); 93 94 /* Trying to program the memory. Within this function, the API will 95 automatically try to program the maximum number of tries. If it fails, 96 trap inside an infinite loop */ 97 if(!MAP_FlashCtl_programMemory( (void *) data, 98 (void*) ((uint8_t *) self->banks[bank]) + offset, size)) 99 while(1); 100 101 /* Setting the sector back to protected */ 102 MAP_FlashCtl_protectSector(FLASH_MAIN_MEMORY_SPACE_BANK1,self->sectors[bank]); 103 } 104 105 static const hal_flash_bank_t hal_flash_bank_msp432_impl = { 106 /* uint32_t (*get_size)() */ &hal_flash_bank_msp432_get_size, 107 /* uint32_t (*get_alignment)(..); */ &hal_flash_bank_memory_msp432_get_alignment, 108 /* void (*erase)(..); */ &hal_flash_bank_msp432_erase, 109 /* void (*read)(..); */ &hal_flash_bank_msp432_read, 110 /* void (*write)(..); */ &hal_flash_bank_msp432_write, 111 }; 112 113 const hal_flash_bank_t * hal_flash_bank_msp432_init_instance(hal_flash_bank_msp432_t * context, uint32_t sector_size, 114 uint32_t bank_0_sector, uint32_t bank_1_sector, uintptr_t bank_0_addr, uintptr_t bank_1_addr){ 115 context->sector_size = sector_size; 116 context->sectors[0] = bank_0_sector; 117 context->sectors[1] = bank_1_sector; 118 context->banks[0] = bank_0_addr; 119 context->banks[1] = bank_1_addr; 120 return &hal_flash_bank_msp432_impl; 121 } 122