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 BLUEKITCHEN GMBH 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 BLUEKITCHEN
21 * GMBH 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
hal_flash_bank_msp432_get_size(void * context)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
hal_flash_bank_memory_msp432_get_alignment(void * context)51 static uint32_t hal_flash_bank_memory_msp432_get_alignment(void * context){
52 UNUSED(context);
53 return 4;
54 }
55
hal_flash_bank_msp432_erase(void * context,int bank)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
hal_flash_bank_msp432_read(void * context,int bank,uint32_t offset,uint8_t * buffer,uint32_t size)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
hal_flash_bank_msp432_write(void * context,int bank,uint32_t offset,const uint8_t * data,uint32_t size)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
hal_flash_bank_msp432_init_instance(hal_flash_bank_msp432_t * context,uint32_t sector_size,uint32_t bank_0_sector,uint32_t bank_1_sector,uintptr_t bank_0_addr,uintptr_t bank_1_addr)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