src/main/config/config_streamer.c

   1 /*
   2  * This file is part of Cleanflight and Betaflight.
   3  *
   4  * Cleanflight and Betaflight are free software. You can redistribute
   5  * this software and/or modify this software under the terms of the
   6  * GNU General Public License as published by the Free Software
   7  * Foundation, either version 3 of the License, or (at your option)
   8  * any later version.
   9  *
  10  * Cleanflight and Betaflight are distributed in the hope that they
  11  * will be useful, but WITHOUT ANY WARRANTY; without even the implied
  12  * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  13  * See the GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this software.
  17  *
  18  * If not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21 #include <string.h>
  22
  23 #include "platform.h"
  24
  25 #include "drivers/system.h"
  26 #include "drivers/flash.h"
  27
  28 #include "config/config_eeprom.h"
  29 #include "config/config_streamer.h"
  30
  31 #if !defined(CONFIG_IN_FLASH)
  32 #if defined(CONFIG_IN_RAM) && defined(PERSISTENT)
  33 PERSISTENT uint8_t eepromData[EEPROM_SIZE];
  34 #else
  35 uint8_t eepromData[EEPROM_SIZE];
  36 #endif
  37 #endif
  38
  39
  40 #if !defined(FLASH_PAGE_SIZE)
  41 #error "Flash page size not defined for target."
  42 #endif
  43
  44 void config_streamer_init(config_streamer_t *c)
  45 {
  46     memset(c, 0, sizeof(*c));
  47 }
  48
  49 void config_streamer_start(config_streamer_t *c, uintptr_t base, int size)
  50 {
  51     // base must start at FLASH_PAGE_SIZE boundary when using embedded flash.
  52     c->address = base;
  53     c->size = size;
  54     if (!c->unlocked) {
  55 #if defined(CONFIG_IN_RAM) || defined(CONFIG_IN_EXTERNAL_FLASH) || defined(CONFIG_IN_SDCARD)
  56         // NOP
  57 #elif defined(CONFIG_IN_FLASH) || defined(CONFIG_IN_FILE)
  58 #if defined(STM32F7) || defined(STM32H7) || defined(STM32G4)
  59         HAL_FLASH_Unlock();
  60 #elif defined(AT32F4)
  61         flash_unlock();
  62 #else
  63         FLASH_Unlock();
  64 #endif
  65 #endif
  66         c->unlocked = true;
  67     }
  68
  69 #if defined(CONFIG_IN_RAM) || defined(CONFIG_IN_FILE) || defined(CONFIG_IN_EXTERNAL_FLASH)
  70     // NOP
  71 #elif defined(CONFIG_IN_FLASH)
  72 #if defined(STM32F4)
  73     FLASH_ClearFlag(FLASH_FLAG_EOP | FLASH_FLAG_OPERR | FLASH_FLAG_WRPERR | FLASH_FLAG_PGAERR | FLASH_FLAG_PGPERR | FLASH_FLAG_PGSERR);
  74 #elif defined(STM32F7)
  75     // NOP
  76 #elif defined(STM32H7)
  77     // NOP
  78 #elif defined(STM32G4)
  79     // NOP
  80 #elif defined(AT32F4)
  81     flash_flag_clear(FLASH_ODF_FLAG | FLASH_PRGMERR_FLAG | FLASH_EPPERR_FLAG);
  82 #elif defined(UNIT_TEST) || defined(SIMULATOR_BUILD)
  83     // NOP
  84 #else
  85 # error "Unsupported CPU"
  86 #endif
  87 #endif
  88     c->err = 0;
  89 }
  90
  91 #if defined(CONFIG_IN_RAM) || defined(CONFIG_IN_EXTERNAL_FLASH) || defined(CONFIG_IN_SDCARD)
  92 // No flash sector method required.
  93 #elif defined(CONFIG_IN_FLASH)
  94 #if defined(STM32F745xx) || defined(STM32F746xx) || defined(STM32F765xx)
  95 /*
  96 Sector 0    0x08000000 - 0x08007FFF 32 Kbytes
  97 Sector 1    0x08008000 - 0x0800FFFF 32 Kbytes
  98 Sector 2    0x08010000 - 0x08017FFF 32 Kbytes
  99 Sector 3    0x08018000 - 0x0801FFFF 32 Kbytes
 100 Sector 4    0x08020000 - 0x0803FFFF 128 Kbytes
 101 Sector 5    0x08040000 - 0x0807FFFF 256 Kbytes
 102 Sector 6    0x08080000 - 0x080BFFFF 256 Kbytes
 103 Sector 7    0x080C0000 - 0x080FFFFF 256 Kbytes
 104
 105 F7X5XI device with 2M flash
 106 Sector 8    0x08100000 - 0x0813FFFF 256 Kbytes
 107 Sector 9    0x08140000 - 0x0817FFFF 256 Kbytes
 108 Sector 10   0x08180000 - 0x081BFFFF 256 Kbytes
 109 Sector 11   0x081C0000 - 0x081FFFFF 256 Kbytes
 110 */
 111
 112 static uint32_t getFLASHSectorForEEPROM(void)
 113 {
 114     if ((uint32_t)&__config_start <= 0x08007FFF)
 115         return FLASH_SECTOR_0;
 116     if ((uint32_t)&__config_start <= 0x0800FFFF)
 117         return FLASH_SECTOR_1;
 118     if ((uint32_t)&__config_start <= 0x08017FFF)
 119         return FLASH_SECTOR_2;
 120     if ((uint32_t)&__config_start <= 0x0801FFFF)
 121         return FLASH_SECTOR_3;
 122     if ((uint32_t)&__config_start <= 0x0803FFFF)
 123         return FLASH_SECTOR_4;
 124     if ((uint32_t)&__config_start <= 0x0807FFFF)
 125         return FLASH_SECTOR_5;
 126     if ((uint32_t)&__config_start <= 0x080BFFFF)
 127         return FLASH_SECTOR_6;
 128     if ((uint32_t)&__config_start <= 0x080FFFFF)
 129         return FLASH_SECTOR_7;
 130 #if defined(STM32F765xx)
 131     if ((uint32_t)&__config_start <= 0x0813FFFF)
 132         return FLASH_SECTOR_8;
 133     if ((uint32_t)&__config_start <= 0x0817FFFF)
 134         return FLASH_SECTOR_9;
 135     if ((uint32_t)&__config_start <= 0x081BFFFF)
 136         return FLASH_SECTOR_10;
 137     if ((uint32_t)&__config_start <= 0x081FFFFF)
 138         return FLASH_SECTOR_11;
 139 #endif
 140
 141     // Not good
 142     while (1) {
 143         failureMode(FAILURE_CONFIG_STORE_FAILURE);
 144     }
 145 }
 146
 147 #elif defined(STM32F722xx)
 148 /*
 149 Sector 0    0x08000000 - 0x08003FFF 16 Kbytes
 150 Sector 1    0x08004000 - 0x08007FFF 16 Kbytes
 151 Sector 2    0x08008000 - 0x0800BFFF 16 Kbytes
 152 Sector 3    0x0800C000 - 0x0800FFFF 16 Kbytes
 153 Sector 4    0x08010000 - 0x0801FFFF 64 Kbytes
 154 Sector 5    0x08020000 - 0x0803FFFF 128 Kbytes
 155 Sector 6    0x08040000 - 0x0805FFFF 128 Kbytes
 156 Sector 7    0x08060000 - 0x0807FFFF 128 Kbytes
 157 */
 158
 159 static uint32_t getFLASHSectorForEEPROM(void)
 160 {
 161     if ((uint32_t)&__config_start <= 0x08003FFF)
 162         return FLASH_SECTOR_0;
 163     if ((uint32_t)&__config_start <= 0x08007FFF)
 164         return FLASH_SECTOR_1;
 165     if ((uint32_t)&__config_start <= 0x0800BFFF)
 166         return FLASH_SECTOR_2;
 167     if ((uint32_t)&__config_start <= 0x0800FFFF)
 168         return FLASH_SECTOR_3;
 169     if ((uint32_t)&__config_start <= 0x0801FFFF)
 170         return FLASH_SECTOR_4;
 171     if ((uint32_t)&__config_start <= 0x0803FFFF)
 172         return FLASH_SECTOR_5;
 173     if ((uint32_t)&__config_start <= 0x0805FFFF)
 174         return FLASH_SECTOR_6;
 175     if ((uint32_t)&__config_start <= 0x0807FFFF)
 176         return FLASH_SECTOR_7;
 177
 178     // Not good
 179     while (1) {
 180         failureMode(FAILURE_CONFIG_STORE_FAILURE);
 181     }
 182 }
 183
 184 #elif defined(STM32F4)
 185 /*
 186 Sector 0    0x08000000 - 0x08003FFF 16 Kbytes
 187 Sector 1    0x08004000 - 0x08007FFF 16 Kbytes
 188 Sector 2    0x08008000 - 0x0800BFFF 16 Kbytes
 189 Sector 3    0x0800C000 - 0x0800FFFF 16 Kbytes
 190 Sector 4    0x08010000 - 0x0801FFFF 64 Kbytes
 191 Sector 5    0x08020000 - 0x0803FFFF 128 Kbytes
 192 Sector 6    0x08040000 - 0x0805FFFF 128 Kbytes
 193 Sector 7    0x08060000 - 0x0807FFFF 128 Kbytes
 194 Sector 8    0x08080000 - 0x0809FFFF 128 Kbytes
 195 Sector 9    0x080A0000 - 0x080BFFFF 128 Kbytes
 196 Sector 10   0x080C0000 - 0x080DFFFF 128 Kbytes
 197 Sector 11   0x080E0000 - 0x080FFFFF 128 Kbytes
 198 */
 199
 200 static uint32_t getFLASHSectorForEEPROM(void)
 201 {
 202     if ((uint32_t)&__config_start <= 0x08003FFF)
 203         return FLASH_Sector_0;
 204     if ((uint32_t)&__config_start <= 0x08007FFF)
 205         return FLASH_Sector_1;
 206     if ((uint32_t)&__config_start <= 0x0800BFFF)
 207         return FLASH_Sector_2;
 208     if ((uint32_t)&__config_start <= 0x0800FFFF)
 209         return FLASH_Sector_3;
 210     if ((uint32_t)&__config_start <= 0x0801FFFF)
 211         return FLASH_Sector_4;
 212     if ((uint32_t)&__config_start <= 0x0803FFFF)
 213         return FLASH_Sector_5;
 214     if ((uint32_t)&__config_start <= 0x0805FFFF)
 215         return FLASH_Sector_6;
 216     if ((uint32_t)&__config_start <= 0x0807FFFF)
 217         return FLASH_Sector_7;
 218     if ((uint32_t)&__config_start <= 0x0809FFFF)
 219         return FLASH_Sector_8;
 220     if ((uint32_t)&__config_start <= 0x080DFFFF)
 221         return FLASH_Sector_9;
 222     if ((uint32_t)&__config_start <= 0x080BFFFF)
 223         return FLASH_Sector_10;
 224     if ((uint32_t)&__config_start <= 0x080FFFFF)
 225         return FLASH_Sector_11;
 226
 227     // Not good
 228     while (1) {
 229         failureMode(FAILURE_CONFIG_STORE_FAILURE);
 230     }
 231 }
 232
 233 #elif defined(STM32H743xx) || defined(STM32G4) || defined(STM32H7A3xx) || defined(STM32H7A3xxQ) || defined(STM32H723xx) || defined(STM32H725xx)
 234 /*
 235 MCUs with uniform array of equal size sectors, handled in two banks having contiguous address.
 236 (Devices with non-contiguous flash layout is not currently useful anyways.)
 237
 238 H743
 239 2 bank * 8 sector/bank * 128K/sector (2MB)
 240 Bank 1 0x08000000 - 0x080FFFFF 128KB * 8
 241 Bank 2 0x08100000 - 0x081FFFFF 128KB * 8
 242
 243 H743
 244 1 bank * 8 sector/bank * 128K/sector (1MB)
 245 Bank 1 0x08000000 - 0x080FFFFF 128KB * 8
 246
 247 H7A3
 248 2 bank * 128 sector/bank * 8KB/sector (2MB)
 249 Bank 1 0x08000000 - 0x080FFFFF 8KB * 128
 250 Bank 2 0x08100000 - 0x081FFFFF 8KB * 128
 251
 252 G473/474 in dual bank mode
 253 2 bank * 128 sector/bank * 2KB/sector (512KB)
 254 Bank 1 0x08000000 - 0x0803FFFF 2KB * 128
 255 Bank 2 0x08040000 - 0x0807FFFF 2KB * 128
 256
 257 Note that FLASH_BANK_SIZE constant used in the following code changes depending on
 258 bank operation mode. The code assumes dual bank operation, in which case the
 259 FLASH_BANK_SIZE constant is set to one half of the available flash size in HAL.
 260 */
 261
 262 #if defined(STM32H743xx) || defined(STM32H723xx) || defined(STM32H725xx)
 263 #define FLASH_PAGE_PER_BANK 8
 264 #elif defined(STM32H7A3xx) || defined(STM32H7A3xxQ)
 265 #define FLASH_PAGE_PER_BANK 128
 266 #elif defined(STM32G4)
 267 #define FLASH_PAGE_PER_BANK 128
 268 // These are not defined in CMSIS like H7
 269 #define FLASH_BANK1_BASE FLASH_BASE
 270 #define FLASH_BANK2_BASE (FLASH_BANK1_BASE + FLASH_BANK_SIZE)
 271 #endif
 272
 273 static void getFLASHSectorForEEPROM(uint32_t address, uint32_t *bank, uint32_t *sector)
 274 {
 275 #if defined(FLASH_BANK2_BASE)
 276     if (address >= FLASH_BANK1_BASE && address < FLASH_BANK2_BASE) {
 277         *bank = FLASH_BANK_1;
 278     } else if (address >= FLASH_BANK2_BASE && address < FLASH_BANK2_BASE + FLASH_BANK_SIZE) {
 279         *bank = FLASH_BANK_2;
 280         address -= FLASH_BANK_SIZE;
 281     }
 282 #else
 283     if (address >= FLASH_BANK1_BASE && address < FLASH_BANK1_BASE + FLASH_BANK_SIZE) {
 284         *bank = FLASH_BANK_1;
 285     }
 286 #endif
 287     else {
 288         // Not good
 289         while (1) {
 290             failureMode(FAILURE_CONFIG_STORE_FAILURE);
 291         }
 292     }
 293
 294     address -= FLASH_BANK1_BASE;
 295     *sector = address / FLASH_PAGE_SIZE;
 296 }
 297 #elif defined(STM32H750xx)
 298 /*
 299 The memory map supports 2 banks of 8 128k sectors like the H743xx, but there is only one 128K sector so we save some code
 300 space by using a smaller function.
 301
 302 Bank 1
 303 Sector 0    0x08000000 - 0x0801FFFF 128 Kbytes
 304
 305 */
 306
 307 static void getFLASHSectorForEEPROM(uint32_t *bank, uint32_t *sector)
 308 {
 309
 310     uint32_t start = (uint32_t)&__config_start;
 311
 312     if (start == FLASH_BANK1_BASE) {
 313         *sector = FLASH_SECTOR_0;
 314         *bank = FLASH_BANK_1;
 315     } else {
 316         // Not good
 317         while (1) {
 318             failureMode(FAILURE_CONFIG_STORE_FAILURE);
 319         }
 320     }
 321 }
 322 #endif
 323 #endif // CONFIG_IN_FLASH
 324
 325 // FIXME the return values are currently magic numbers
 326 static int write_word(config_streamer_t *c, config_streamer_buffer_align_type_t *buffer)
 327 {
 328     if (c->err != 0) {
 329         return c->err;
 330     }
 331 #if defined(CONFIG_IN_EXTERNAL_FLASH)
 332
 333     uint32_t dataOffset = (uint32_t)(c->address - (uintptr_t)&eepromData[0]);
 334
 335     const flashPartition_t *flashPartition = flashPartitionFindByType(FLASH_PARTITION_TYPE_CONFIG);
 336     const flashGeometry_t *flashGeometry = flashGetGeometry();
 337
 338     uint32_t flashStartAddress = flashPartition->startSector * flashGeometry->sectorSize;
 339     uint32_t flashOverflowAddress = ((flashPartition->endSector + 1) * flashGeometry->sectorSize); // +1 to sector for inclusive
 340
 341     uint32_t flashAddress = flashStartAddress + dataOffset;
 342     if (flashAddress + CONFIG_STREAMER_BUFFER_SIZE > flashOverflowAddress) {
 343         return -3; // address is past end of partition
 344     }
 345
 346     uint32_t flashSectorSize = flashGeometry->sectorSize;
 347     uint32_t flashPageSize = flashGeometry->pageSize;
 348     const uint8_t *buffers[1];
 349     uint32_t bufferSizes[1];
 350
 351     bool onPageBoundary = (flashAddress % flashPageSize == 0);
 352     if (onPageBoundary) {
 353
 354         bool firstPage = (flashAddress == flashStartAddress);
 355         if (!firstPage) {
 356             flashPageProgramFinish();
 357         }
 358
 359         if (flashAddress % flashSectorSize == 0) {
 360             flashEraseSector(flashAddress);
 361         }
 362
 363         flashPageProgramBegin(flashAddress, NULL);
 364     }
 365
 366     buffers[0] = (uint8_t *)buffer;
 367     bufferSizes[0] = CONFIG_STREAMER_BUFFER_SIZE;
 368
 369     flashPageProgramContinue(buffers, bufferSizes, 1);
 370
 371 #elif defined(CONFIG_IN_RAM) || defined(CONFIG_IN_SDCARD) || defined(CONFIG_IN_MEMORY_MAPPED_FLASH)
 372     if (c->address == (uintptr_t)&eepromData[0]) {
 373         memset(eepromData, 0, sizeof(eepromData));
 374     }
 375
 376     uint64_t *dest_addr = (uint64_t *)c->address;
 377     uint64_t *src_addr = (uint64_t*)buffer;
 378     uint8_t row_index = CONFIG_STREAMER_BUFFER_SIZE / sizeof(uint64_t);
 379     STATIC_ASSERT(CONFIG_STREAMER_BUFFER_SIZE % sizeof(uint64_t) == 0, "CONFIG_STREAMER_BUFFER_SIZE does not match written size");
 380     /* copy the 256 bits flash word */
 381     do
 382     {
 383       *dest_addr++ = *src_addr++;
 384     } while (--row_index != 0);
 385
 386 #elif defined(CONFIG_IN_FILE)
 387
 388     if (c->address % FLASH_PAGE_SIZE == 0) {
 389         const FLASH_Status status = FLASH_ErasePage(c->address);
 390         if (status != FLASH_COMPLETE) {
 391             return -1;
 392         }
 393     }
 394     STATIC_ASSERT(CONFIG_STREAMER_BUFFER_SIZE == sizeof(uint32_t), "CONFIG_STREAMER_BUFFER_SIZE does not match written size");
 395     const FLASH_Status status = FLASH_ProgramWord(c->address, *buffer);
 396     if (status != FLASH_COMPLETE) {
 397         return -2;
 398     }
 399
 400 #elif defined(CONFIG_IN_FLASH)
 401
 402 #if defined(STM32H7)
 403     if (c->address % FLASH_PAGE_SIZE == 0) {
 404         FLASH_EraseInitTypeDef EraseInitStruct = {
 405             .TypeErase     = FLASH_TYPEERASE_SECTORS,
 406 #if !(defined(STM32H7A3xx) || defined(STM32H7A3xxQ))
 407             .VoltageRange  = FLASH_VOLTAGE_RANGE_3, // 2.7-3.6V
 408 #endif
 409             .NbSectors     = 1
 410         };
 411         getFLASHSectorForEEPROM(c->address, &EraseInitStruct.Banks, &EraseInitStruct.Sector);
 412         uint32_t SECTORError;
 413         const HAL_StatusTypeDef status = HAL_FLASHEx_Erase(&EraseInitStruct, &SECTORError);
 414         if (status != HAL_OK) {
 415             return -1;
 416         }
 417     }
 418
 419     // For H7
 420     // HAL_StatusTypeDef HAL_FLASH_Program(uint32_t TypeProgram, uint32_t Address, uint64_t DataAddress);
 421     STATIC_ASSERT(CONFIG_STREAMER_BUFFER_SIZE == sizeof(uint32_t) * FLASH_NB_32BITWORD_IN_FLASHWORD,  "CONFIG_STREAMER_BUFFER_SIZE does not match written size");
 422     const HAL_StatusTypeDef status = HAL_FLASH_Program(FLASH_TYPEPROGRAM_FLASHWORD, c->address, (uint64_t)(uint32_t)buffer);
 423     if (status != HAL_OK) {
 424         return -2;
 425     }
 426 #elif defined(STM32F7)
 427     if (c->address % FLASH_PAGE_SIZE == 0) {
 428         FLASH_EraseInitTypeDef EraseInitStruct = {
 429             .TypeErase     = FLASH_TYPEERASE_SECTORS,
 430             .VoltageRange  = FLASH_VOLTAGE_RANGE_3, // 2.7-3.6V
 431             .NbSectors     = 1
 432         };
 433         EraseInitStruct.Sector = getFLASHSectorForEEPROM();
 434         uint32_t SECTORError;
 435         const HAL_StatusTypeDef status = HAL_FLASHEx_Erase(&EraseInitStruct, &SECTORError);
 436         if (status != HAL_OK) {
 437             return -1;
 438         }
 439     }
 440
 441     STATIC_ASSERT(CONFIG_STREAMER_BUFFER_SIZE == sizeof(uint32_t) * 1,  "CONFIG_STREAMER_BUFFER_SIZE does not match written size");
 442     // For F7
 443     // HAL_StatusTypeDef HAL_FLASH_Program(uint32_t TypeProgram, uint32_t Address, uint64_t Data);
 444     const HAL_StatusTypeDef status = HAL_FLASH_Program(FLASH_TYPEPROGRAM_WORD, c->address, (uint64_t)*buffer);
 445     if (status != HAL_OK) {
 446         return -2;
 447     }
 448 #elif defined(STM32G4)
 449     if (c->address % FLASH_PAGE_SIZE == 0) {
 450
 451         FLASH_EraseInitTypeDef EraseInitStruct = {
 452             .TypeErase     = FLASH_TYPEERASE_PAGES,
 453             .NbPages       = 1
 454         };
 455         getFLASHSectorForEEPROM(c->address, &EraseInitStruct.Banks, &EraseInitStruct.Page);
 456         uint32_t SECTORError;
 457         const HAL_StatusTypeDef status = HAL_FLASHEx_Erase(&EraseInitStruct, &SECTORError);
 458         if (status != HAL_OK) {
 459             return -1;
 460         }
 461     }
 462
 463     STATIC_ASSERT(CONFIG_STREAMER_BUFFER_SIZE == sizeof(uint32_t) * 2,  "CONFIG_STREAMER_BUFFER_SIZE does not match written size");
 464     const HAL_StatusTypeDef status = HAL_FLASH_Program(FLASH_TYPEPROGRAM_DOUBLEWORD, c->address, (uint64_t)*buffer);
 465     if (status != HAL_OK) {
 466         return -2;
 467     }
 468 #elif defined(AT32F4)
 469     if (c->address % FLASH_PAGE_SIZE == 0) {
 470         const flash_status_type status = flash_sector_erase(c->address);
 471         if (status != FLASH_OPERATE_DONE) {
 472             return -1;
 473         }
 474     }
 475
 476     STATIC_ASSERT(CONFIG_STREAMER_BUFFER_SIZE == sizeof(uint32_t) * 1,  "CONFIG_STREAMER_BUFFER_SIZE does not match written size");
 477     const flash_status_type status = flash_word_program(c->address, (uint32_t)*buffer);
 478     if (status != FLASH_OPERATE_DONE) {
 479         return -2;
 480     }
 481 #else // !STM32H7 && !STM32F7 && !STM32G4
 482     if (c->address % FLASH_PAGE_SIZE == 0) {
 483         const FLASH_Status status = FLASH_EraseSector(getFLASHSectorForEEPROM(), VoltageRange_3); //0x08080000 to 0x080A0000
 484         if (status != FLASH_COMPLETE) {
 485             return -1;
 486         }
 487     }
 488
 489     STATIC_ASSERT(CONFIG_STREAMER_BUFFER_SIZE == sizeof(uint32_t) * 1,  "CONFIG_STREAMER_BUFFER_SIZE does not match written size");
 490     const FLASH_Status status = FLASH_ProgramWord(c->address, *buffer);
 491     if (status != FLASH_COMPLETE) {
 492         return -2;
 493     }
 494 #endif
 495 #endif
 496     c->address += CONFIG_STREAMER_BUFFER_SIZE;
 497     return 0;
 498 }
 499
 500 int config_streamer_write(config_streamer_t *c, const uint8_t *p, uint32_t size)
 501 {
 502     for (const uint8_t *pat = p; pat != (uint8_t*)p + size; pat++) {
 503         c->buffer.b[c->at++] = *pat;
 504
 505         if (c->at == sizeof(c->buffer)) {
 506             c->err = write_word(c, &c->buffer.w);
 507             c->at = 0;
 508         }
 509     }
 510     return c->err;
 511 }
 512
 513 int config_streamer_status(config_streamer_t *c)
 514 {
 515     return c->err;
 516 }
 517
 518 int config_streamer_flush(config_streamer_t *c)
 519 {
 520     if (c->at != 0) {
 521         memset(c->buffer.b + c->at, 0, sizeof(c->buffer) - c->at);
 522         c->err = write_word(c, &c->buffer.w);
 523         c->at = 0;
 524     }
 525     return c->err;
 526 }
 527
 528 int config_streamer_finish(config_streamer_t *c)
 529 {
 530     if (c->unlocked) {
 531 #if defined(CONFIG_IN_SDCARD)
 532         saveEEPROMToSDCard();
 533 #elif defined(CONFIG_IN_EXTERNAL_FLASH)
 534         flashFlush();
 535 #elif defined(CONFIG_IN_MEMORY_MAPPED_FLASH)
 536         saveEEPROMToMemoryMappedFlash();
 537 #elif defined(CONFIG_IN_RAM)
 538         // NOP
 539 #elif defined(CONFIG_IN_FILE)
 540         FLASH_Lock();
 541 #elif defined(CONFIG_IN_FLASH)
 542 #if defined(STM32F7) || defined(STM32H7) || defined(STM32G4)
 543         HAL_FLASH_Lock();
 544 #elif defined(AT32F4)
 545         flash_lock();
 546 #else
 547         FLASH_Lock();
 548 #endif
 549 #endif
 550         c->unlocked = false;
 551     }
 552     return c->err;
 553 }