1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
|
#ifdef EMU
extern u8 _flash[512 * 1024];
#define FLASH_ADDR_256 ((size_t)_flash)
#else
#define FLASH_ADDR_256 (0x08000000 + 256*2048)
#endif
void jumptobootloader(void) {
#ifndef EMU
// todo - maybe set a flag in the flash and then use NVIC_SystemReset() which will cause it to jumptobootloader earlier
// https://community.st.com/s/question/0D50X00009XkeeW/stm32l476rg-jump-to-bootloader-from-software
typedef void (*pFunction)(void);
pFunction JumpToApplication;
HAL_RCC_DeInit();
HAL_DeInit();
SysTick->CTRL = 0;
SysTick->LOAD = 0;
SysTick->VAL = 0;
__disable_irq();
__DSB();
__HAL_SYSCFG_REMAPMEMORY_SYSTEMFLASH();/* Remap is bot visible at once. Execute some unrelated command! */
__DSB();
__ISB();
JumpToApplication = (void (*)(void)) (*((uint32_t*)(0x1FFF0000 + 4)));
__set_MSP(*(__IO uint32_t*) 0x1FFF0000);
JumpToApplication();
#else
while (1);
#endif
}
#ifdef EMU
u8 _flash[512 * 1024];
#define FLASH_TYPEPROGRAM_DOUBLEWORD 0
//#define NOFILE
#ifndef NOFILE
FILE* _flashf;
#else
bool flashinited;
#endif
void openflash(void) {
#ifdef NOFILE
if (flashinited) return;
flashinited = true;
memset(_flash, -1, sizeof(_flash));
#else
if (_flashf)
return;
_flashf = fopen("flashmcu.raw", "rb");
if (!_flashf) {
memset(_flash, -1, sizeof(_flash));
_flashf = fopen("flashmcu.raw", "wb");
fwrite(_flash, sizeof(_flash), 1, _flashf);
fclose(_flashf);
}
else {
fread(_flash, sizeof(_flash), 1, _flashf);
fclose(_flashf);
}
_flashf = fopen("flashmcu.raw", "r+b");
#endif
}
int HAL_FLASH_Program(int flags, uint32_t addr, uint64_t val) {
addr -= (u32)FLASH_ADDR_256;
if (addr >= sizeof(_flash))
return 0;
openflash();
(*(uint64_t*)&_flash[addr]) = val;
#ifndef NOFILE
fseek(_flashf, addr, SEEK_SET);
fwrite(&val, 1, 8, _flashf);
fflush(_flashf);
#endif
return 0;
}
void HAL_FLASH_Unlock(void) {
}
void HAL_FLASH_Lock(void) {
#ifndef NOFILE
if (_flashf) fflush(_flashf);
#endif
}
#pragma pack(push,1)
typedef struct UF2_Block {
// 32 byte header
uint32_t magicStart0;
uint32_t magicStart1;
uint32_t flags;
uint32_t targetAddr;
uint32_t payloadSize;
uint32_t blockNo;
uint32_t numBlocks;
uint32_t familyID; // or fileSize;
uint8_t data[476];
uint32_t magicEnd;
} UF2_Block;
static_assert(sizeof(UF2_Block) == 512, "?");
#pragma pack(pop)
void ApplyUF2File(const char* fname) {
FILE* f = fopen(fname, "rb");
if (!f) return;
while (f) {
UF2_Block blk;
if (1 != fread(&blk, 512, 1, f)) break;
if (blk.magicStart0 != 0x0A324655) continue;
if (blk.magicStart1 != 0x9E5D5157) continue;
if (blk.magicEnd != 0x0AB16F30) continue;
if ((blk.flags & 0x00002000) && blk.familyID != 0x00ff6919) continue;
if (blk.payloadSize > 256) continue;
if (blk.flags & 0x00000001) continue; // not main flash
if (blk.targetAddr >= 0x08080000 && blk.targetAddr <= 0x08100000) {
for (int i = 0; i < blk.payloadSize; i += 8) {
HAL_FLASH_Program(0, FLASH_ADDR_256 + i + (blk.targetAddr - 0x08080000), *(uint64_t*)&blk.data [ i ]);
}
}
}
fclose(f);
}
#endif
int flash_erase_page(u8 page) {
#ifndef EMU
if (0) {
// BULK ERASE!!!
FLASH_EraseInitTypeDef EraseInitStruct;
EraseInitStruct.TypeErase = FLASH_TYPEERASE_MASSERASE;
EraseInitStruct.Banks = FLASH_BANK_2;
EraseInitStruct.Page = /*page*/0;
EraseInitStruct.NbPages = /*1*/ 255;
uint32_t SECTORError = 0;
if (HAL_FLASHEx_Erase(&EraseInitStruct, &SECTORError) != HAL_OK) {
DebugLog("flash erase error %d\r\n", SECTORError);
return -1;
}
else {
DebugLog("flash erased ok!\r\n");
}
__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();
}
else {
// custom page erase
FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
SET_BIT(FLASH->CR, FLASH_CR_BKER); // bank 2
#ifdef HALF_FLASH
MODIFY_REG(FLASH->CR, FLASH_CR_PNB, ((page & 0x7FU) << FLASH_CR_PNB_Pos));
#else
MODIFY_REG(FLASH->CR, FLASH_CR_PNB, ((page & 0xFFU) << FLASH_CR_PNB_Pos));
#endif
SET_BIT(FLASH->CR, FLASH_CR_PER);
SET_BIT(FLASH->CR, FLASH_CR_STRT);
FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
CLEAR_BIT(FLASH->CR, (FLASH_CR_PER | FLASH_CR_PNB));
}
#ifndef HALF_FLASH
u32 *mem=(u32*)(FLASH_ADDR_256+page*2048);
for (int i=0;i<2048/4;++i) if (mem[i] != 0xffffffff) {
DebugLog("flash mem page %d failed to erase at address %d - val %08x\r\n", page, i*4, mem[i]);
break;
}
#endif
// DebugLog("flash erase done!\r\n");
#else
memset(_flash + page * 2048, -1, 2048);
#ifndef NOFILE
if (_flashf) {
fseek(_flashf, page*2048, SEEK_SET);
fwrite(_flash+page*2048, 1, 2048, _flashf);
fflush(_flashf);
}
#endif
#endif
return 0;
}
uint64_t* flash_program_block(void* dst, void* src, int size) {
DebugLog("program block %08x size %d\r\n", dst, size);
uint64_t* s = (uint64_t*)src;
volatile uint64_t* d = (volatile uint64_t*)dst;
int osize=size;
while (size >= 8) {
#ifdef EMU
HAL_FLASH_Program(FLASH_TYPEPROGRAM_DOUBLEWORD, (uint32_t)(size_t)(d++), *s++);
#else
if (1) {
HAL_FLASH_Program(FLASH_TYPEPROGRAM_DOUBLEWORD, (uint32_t)(size_t)(d++), *s++);
} else {
// this version seems to fail sometimes?
u32 Address = (uint32_t)(size_t)(d++);
uint64_t Data = *s++;
FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
SET_BIT(FLASH->CR, FLASH_CR_PG);
*(__IO uint32_t*)Address = (uint32_t)Data;
__ISB();
*(__IO uint32_t*)(Address + 4U) = (uint32_t)(Data >> 32);
}
#endif
size -= 8;
//HAL_Delay(5);
}
int fail=0;
{
uint64_t* s = (uint64_t*)src;
volatile uint64_t* d = (volatile uint64_t*)dst;
for (int i=0;i<osize;i+=8) {
if (*s!=*d) {
u32 s0=(*s);
u32 s1=(*s>>32);
u32 d0=(*d);
u32 d1=(*d>>32);
DebugLog("flash program failed at offset %d - %08x %08x vs dst %08x %08x\r\n", i, s0,s1,d0,d1);
++fail;
}
s++; d++;
}
}
if (fail!=0)
DebugLog("flash program block failed!\r\n");
return (uint64_t*)d;
}
|
