10 #include <sys/types.h>
15 #include "stlink-common.h"
16 #include "uglylogging.h"
18 #define LOG_TAG __FILE__
19 #define DLOG(format, args...) ugly_log(UDEBUG, LOG_TAG, format, ## args)
20 #define ILOG(format, args...) ugly_log(UINFO, LOG_TAG, format, ## args)
21 #define WLOG(format, args...) ugly_log(UWARN, LOG_TAG, format, ## args)
22 #define fatal(format, args...) ugly_log(UFATAL, LOG_TAG, format, ## args)
24 /* todo: stm32l15xxx flash memory, pm0062 manual */
26 /* stm32f FPEC flash controller interface, pm0063 manual */
27 // TODO - all of this needs to be abstracted out....
28 #define FLASH_REGS_ADDR 0x40022000
29 #define FLASH_REGS_SIZE 0x28
31 #define FLASH_ACR (FLASH_REGS_ADDR + 0x00)
32 #define FLASH_KEYR (FLASH_REGS_ADDR + 0x04)
33 #define FLASH_SR (FLASH_REGS_ADDR + 0x0c)
34 #define FLASH_CR (FLASH_REGS_ADDR + 0x10)
35 #define FLASH_AR (FLASH_REGS_ADDR + 0x14)
36 #define FLASH_OBR (FLASH_REGS_ADDR + 0x1c)
37 #define FLASH_WRPR (FLASH_REGS_ADDR + 0x20)
39 #define FLASH_RDPTR_KEY 0x00a5
40 #define FLASH_KEY1 0x45670123
41 #define FLASH_KEY2 0xcdef89ab
43 #define FLASH_SR_BSY 0
44 #define FLASH_SR_EOP 5
47 #define FLASH_CR_PER 1
48 #define FLASH_CR_MER 2
49 #define FLASH_CR_STRT 6
50 #define FLASH_CR_LOCK 7
53 //32L = 32F1 same CoreID as 32F4!
54 #define STM32L_FLASH_REGS_ADDR ((uint32_t)0x40023c00)
55 #define STM32L_FLASH_ACR (STM32L_FLASH_REGS_ADDR + 0x00)
56 #define STM32L_FLASH_PECR (STM32L_FLASH_REGS_ADDR + 0x04)
57 #define STM32L_FLASH_PDKEYR (STM32L_FLASH_REGS_ADDR + 0x08)
58 #define STM32L_FLASH_PEKEYR (STM32L_FLASH_REGS_ADDR + 0x0c)
59 #define STM32L_FLASH_PRGKEYR (STM32L_FLASH_REGS_ADDR + 0x10)
60 #define STM32L_FLASH_OPTKEYR (STM32L_FLASH_REGS_ADDR + 0x14)
61 #define STM32L_FLASH_SR (STM32L_FLASH_REGS_ADDR + 0x18)
62 #define STM32L_FLASH_OBR (STM32L_FLASH_REGS_ADDR + 0x0c)
63 #define STM32L_FLASH_WRPR (STM32L_FLASH_REGS_ADDR + 0x20)
67 #define FLASH_F4_REGS_ADDR ((uint32_t)0x40023c00)
68 #define FLASH_F4_KEYR (FLASH_F4_REGS_ADDR + 0x04)
69 #define FLASH_F4_OPT_KEYR (FLASH_F4_REGS_ADDR + 0x08)
70 #define FLASH_F4_SR (FLASH_F4_REGS_ADDR + 0x0c)
71 #define FLASH_F4_CR (FLASH_F4_REGS_ADDR + 0x10)
72 #define FLASH_F4_OPT_CR (FLASH_F4_REGS_ADDR + 0x14)
73 #define FLASH_F4_CR_STRT 16
74 #define FLASH_F4_CR_LOCK 31
75 #define FLASH_F4_CR_SER 1
76 #define FLASH_F4_CR_SNB 3
77 #define FLASH_F4_CR_SNB_MASK 0x38
78 #define FLASH_F4_SR_BSY 16
81 void write_uint32(unsigned char* buf, uint32_t ui) {
82 if (!is_bigendian()) { // le -> le (don't swap)
83 buf[0] = ((unsigned char*) &ui)[0];
84 buf[1] = ((unsigned char*) &ui)[1];
85 buf[2] = ((unsigned char*) &ui)[2];
86 buf[3] = ((unsigned char*) &ui)[3];
88 buf[0] = ((unsigned char*) &ui)[3];
89 buf[1] = ((unsigned char*) &ui)[2];
90 buf[2] = ((unsigned char*) &ui)[1];
91 buf[3] = ((unsigned char*) &ui)[0];
95 void write_uint16(unsigned char* buf, uint16_t ui) {
96 if (!is_bigendian()) { // le -> le (don't swap)
97 buf[0] = ((unsigned char*) &ui)[0];
98 buf[1] = ((unsigned char*) &ui)[1];
100 buf[0] = ((unsigned char*) &ui)[1];
101 buf[1] = ((unsigned char*) &ui)[0];
105 uint32_t read_uint32(const unsigned char *c, const int pt) {
107 char *p = (char *) &ui;
109 if (!is_bigendian()) { // le -> le (don't swap)
123 static uint32_t __attribute__((unused)) read_flash_rdp(stlink_t *sl) {
124 stlink_read_mem32(sl, FLASH_WRPR, sizeof (uint32_t));
125 return read_uint32(sl->q_buf, 0) & 0xff;
128 static inline uint32_t read_flash_wrpr(stlink_t *sl) {
129 stlink_read_mem32(sl, FLASH_WRPR, sizeof (uint32_t));
130 return read_uint32(sl->q_buf, 0);
133 static inline uint32_t read_flash_obr(stlink_t *sl) {
134 stlink_read_mem32(sl, FLASH_OBR, sizeof (uint32_t));
135 return read_uint32(sl->q_buf, 0);
138 static inline uint32_t read_flash_cr(stlink_t *sl) {
139 if(sl->chip_id==STM32F4_CHIP_ID)
140 stlink_read_mem32(sl, FLASH_F4_CR, sizeof (uint32_t));
142 stlink_read_mem32(sl, FLASH_CR, sizeof (uint32_t));
144 fprintf(stdout, "CR:0x%x\n", *(uint32_t*) sl->q_buf);
146 return read_uint32(sl->q_buf, 0);
149 static inline unsigned int is_flash_locked(stlink_t *sl) {
150 /* return non zero for true */
151 if(sl->chip_id==STM32F4_CHIP_ID)
152 return read_flash_cr(sl) & (1 << FLASH_F4_CR_LOCK);
154 return read_flash_cr(sl) & (1 << FLASH_CR_LOCK);
157 static void unlock_flash(stlink_t *sl) {
158 /* the unlock sequence consists of 2 write cycles where
159 2 key values are written to the FLASH_KEYR register.
160 an invalid sequence results in a definitive lock of
161 the FPEC block until next reset.
163 if(sl->chip_id==STM32F4_CHIP_ID) {
164 write_uint32(sl->q_buf, FLASH_KEY1);
165 stlink_write_mem32(sl, FLASH_F4_KEYR, sizeof (uint32_t));
166 write_uint32(sl->q_buf, FLASH_KEY2);
167 stlink_write_mem32(sl, FLASH_F4_KEYR, sizeof (uint32_t));
170 write_uint32(sl->q_buf, FLASH_KEY1);
171 stlink_write_mem32(sl, FLASH_KEYR, sizeof (uint32_t));
172 write_uint32(sl->q_buf, FLASH_KEY2);
173 stlink_write_mem32(sl, FLASH_KEYR, sizeof (uint32_t));
178 static int unlock_flash_if(stlink_t *sl) {
179 /* unlock flash if already locked */
181 if (is_flash_locked(sl)) {
183 if (is_flash_locked(sl)) {
184 WLOG("Failed to unlock flash!\n");
188 ILOG("Successfully unlocked flash\n");
192 static void lock_flash(stlink_t *sl) {
193 if(sl->chip_id==STM32F4_CHIP_ID) {
194 const uint32_t n = read_flash_cr(sl) | (1 << FLASH_F4_CR_LOCK);
195 write_uint32(sl->q_buf, n);
196 stlink_write_mem32(sl, FLASH_F4_CR, sizeof (uint32_t));
199 /* write to 1 only. reset by hw at unlock sequence */
200 const uint32_t n = read_flash_cr(sl) | (1 << FLASH_CR_LOCK);
201 write_uint32(sl->q_buf, n);
202 stlink_write_mem32(sl, FLASH_CR, sizeof (uint32_t));
207 static void set_flash_cr_pg(stlink_t *sl) {
208 if(sl->chip_id==STM32F4_CHIP_ID) {
209 uint32_t x = read_flash_cr(sl);
210 x |= (1 << FLASH_CR_PG);
211 write_uint32(sl->q_buf, x);
212 stlink_write_mem32(sl, FLASH_F4_CR, sizeof (uint32_t));
215 const uint32_t n = 1 << FLASH_CR_PG;
216 write_uint32(sl->q_buf, n);
217 stlink_write_mem32(sl, FLASH_CR, sizeof (uint32_t));
221 static void __attribute__((unused)) clear_flash_cr_pg(stlink_t *sl) {
222 const uint32_t n = read_flash_cr(sl) & ~(1 << FLASH_CR_PG);
223 write_uint32(sl->q_buf, n);
224 if(sl->chip_id==STM32F4_CHIP_ID)
225 stlink_write_mem32(sl, FLASH_F4_CR, sizeof (uint32_t));
227 stlink_write_mem32(sl, FLASH_CR, sizeof (uint32_t));
230 static void set_flash_cr_per(stlink_t *sl) {
231 const uint32_t n = 1 << FLASH_CR_PER;
232 write_uint32(sl->q_buf, n);
233 stlink_write_mem32(sl, FLASH_CR, sizeof (uint32_t));
236 static void __attribute__((unused)) clear_flash_cr_per(stlink_t *sl) {
237 const uint32_t n = read_flash_cr(sl) & ~(1 << FLASH_CR_PER);
238 write_uint32(sl->q_buf, n);
239 stlink_write_mem32(sl, FLASH_CR, sizeof (uint32_t));
242 static void set_flash_cr_mer(stlink_t *sl) {
243 const uint32_t n = 1 << FLASH_CR_MER;
244 write_uint32(sl->q_buf, n);
245 stlink_write_mem32(sl, FLASH_CR, sizeof (uint32_t));
248 static void __attribute__((unused)) clear_flash_cr_mer(stlink_t *sl) {
249 const uint32_t n = read_flash_cr(sl) & ~(1 << FLASH_CR_MER);
250 write_uint32(sl->q_buf, n);
251 stlink_write_mem32(sl, FLASH_CR, sizeof (uint32_t));
254 static void set_flash_cr_strt(stlink_t *sl) {
255 if(sl->chip_id == STM32F4_CHIP_ID)
257 uint32_t x = read_flash_cr(sl);
258 x |= (1 << FLASH_F4_CR_STRT);
259 write_uint32(sl->q_buf, x);
260 stlink_write_mem32(sl, FLASH_F4_CR, sizeof (uint32_t));
263 /* assume come on the flash_cr_per path */
264 const uint32_t n = (1 << FLASH_CR_PER) | (1 << FLASH_CR_STRT);
265 write_uint32(sl->q_buf, n);
266 stlink_write_mem32(sl, FLASH_CR, sizeof (uint32_t));
270 static inline uint32_t read_flash_acr(stlink_t *sl) {
271 stlink_read_mem32(sl, FLASH_ACR, sizeof (uint32_t));
272 return read_uint32(sl->q_buf, 0);
275 static inline uint32_t read_flash_sr(stlink_t *sl) {
276 if(sl->chip_id==STM32F4_CHIP_ID)
277 stlink_read_mem32(sl, FLASH_F4_SR, sizeof (uint32_t));
279 stlink_read_mem32(sl, FLASH_SR, sizeof (uint32_t));
280 //fprintf(stdout, "SR:0x%x\n", *(uint32_t*) sl->q_buf);
281 return read_uint32(sl->q_buf, 0);
284 static inline unsigned int is_flash_busy(stlink_t *sl) {
285 if(sl->chip_id==STM32F4_CHIP_ID)
286 return read_flash_sr(sl) & (1 << FLASH_F4_SR_BSY);
288 return read_flash_sr(sl) & (1 << FLASH_SR_BSY);
291 static void wait_flash_busy(stlink_t *sl) {
292 /* todo: add some delays here */
293 while (is_flash_busy(sl))
297 static inline unsigned int is_flash_eop(stlink_t *sl) {
298 return read_flash_sr(sl) & (1 << FLASH_SR_EOP);
301 static void __attribute__((unused)) clear_flash_sr_eop(stlink_t *sl) {
302 const uint32_t n = read_flash_sr(sl) & ~(1 << FLASH_SR_EOP);
303 write_uint32(sl->q_buf, n);
304 stlink_write_mem32(sl, FLASH_SR, sizeof (uint32_t));
307 static void __attribute__((unused)) wait_flash_eop(stlink_t *sl) {
308 /* todo: add some delays here */
309 while (is_flash_eop(sl) == 0)
313 static inline void write_flash_ar(stlink_t *sl, uint32_t n) {
314 write_uint32(sl->q_buf, n);
315 stlink_write_mem32(sl, FLASH_AR, sizeof (uint32_t));
318 static inline void write_flash_cr_psiz(stlink_t *sl, uint32_t n) {
319 uint32_t x = read_flash_cr(sl);
323 fprintf(stdout, "PSIZ:0x%x 0x%x\n", x, n);
325 write_uint32(sl->q_buf, x);
326 stlink_write_mem32(sl, FLASH_F4_CR, sizeof (uint32_t));
330 static inline void write_flash_cr_snb(stlink_t *sl, uint32_t n) {
331 uint32_t x = read_flash_cr(sl);
332 x &= ~FLASH_F4_CR_SNB_MASK;
333 x |= (n << FLASH_F4_CR_SNB);
334 x |= (1 << FLASH_F4_CR_SER);
336 fprintf(stdout, "SNB:0x%x 0x%x\n", x, n);
338 write_uint32(sl->q_buf, x);
339 stlink_write_mem32(sl, FLASH_F4_CR, sizeof (uint32_t));
344 static void disable_flash_read_protection(stlink_t *sl) {
345 /* erase the option byte area */
352 // Delegates to the backends...
354 void stlink_close(stlink_t *sl) {
355 DLOG("*** stlink_close ***\n");
356 sl->backend->close(sl);
360 void stlink_exit_debug_mode(stlink_t *sl) {
361 DLOG("*** stlink_exit_debug_mode ***\n");
362 sl->backend->exit_debug_mode(sl);
365 void stlink_enter_swd_mode(stlink_t *sl) {
366 DLOG("*** stlink_enter_swd_mode ***\n");
367 sl->backend->enter_swd_mode(sl);
370 // Force the core into the debug mode -> halted state.
371 void stlink_force_debug(stlink_t *sl) {
372 DLOG("*** stlink_force_debug_mode ***\n");
373 sl->backend->force_debug(sl);
376 void stlink_exit_dfu_mode(stlink_t *sl) {
377 DLOG("*** stlink_exit_dfu_mode ***\n");
378 sl->backend->exit_dfu_mode(sl);
381 uint32_t stlink_core_id(stlink_t *sl) {
382 DLOG("*** stlink_core_id ***\n");
383 sl->backend->core_id(sl);
385 stlink_print_data(sl);
386 DLOG("core_id = 0x%08x\n", sl->core_id);
390 uint32_t stlink_chip_id(stlink_t *sl) {
391 stlink_read_mem32(sl, 0xE0042000, 4);
392 uint32_t chip_id = sl->q_buf[0] | (sl->q_buf[1] << 8) | (sl->q_buf[2] << 16) |
393 (sl->q_buf[3] << 24);
398 * Cortex m3 tech ref manual, CPUID register description
399 * @param sl stlink context
400 * @param cpuid pointer to the result object
402 void stlink_cpu_id(stlink_t *sl, cortex_m3_cpuid_t *cpuid) {
403 stlink_read_mem32(sl, CM3_REG_CPUID, 4);
404 uint32_t raw = read_uint32(sl->q_buf, 0);
405 cpuid->implementer_id = (raw >> 24) & 0x7f;
406 cpuid->variant = (raw >> 20) & 0xf;
407 cpuid->part = (raw >> 4) & 0xfff;
408 cpuid->revision = raw & 0xf;
413 * reads and decodes the flash parameters, as dynamically as possible
415 * @return 0 for success, or -1 for unsupported core type.
417 int stlink_load_device_params(stlink_t *sl) {
418 ILOG("Loading device parameters....\n");
419 const chip_params_t *params = NULL;
421 sl->core_id = stlink_core_id(sl);
422 uint32_t chip_id = stlink_chip_id(sl);
424 /* Fix chip_id for F4 rev A errata */
425 if (((chip_id & 0xFFF) == 0x411) && (sl->core_id == CORE_M4_R0)) {
429 sl->chip_id = chip_id;
430 for(size_t i = 0; i < sizeof(devices) / sizeof(devices[0]); i++) {
431 if(devices[i].chip_id == (chip_id & 0xFFF)) {
432 params = &devices[i];
436 if (params == NULL) {
437 WLOG("unknown chip id! %#x\n", chip_id);
441 // These are fixed...
442 sl->flash_base = STM32_FLASH_BASE;
443 sl->sram_base = STM32_SRAM_BASE;
445 // read flash size from hardware, if possible...
446 if ((chip_id & 0xFFF) == STM32_CHIPID_F2) {
447 sl->flash_size = 0; // FIXME - need to work this out some other way, just set to max possible?
448 } else if ((chip_id & 0xFFF) == STM32_CHIPID_F4) {
449 sl->flash_size = 0x100000; //todo: RM0090 error; size register same address as unique ID
451 stlink_read_mem32(sl, params->flash_size_reg, 4);
452 uint32_t flash_size = sl->q_buf[0] | (sl->q_buf[1] << 8);
453 sl->flash_size = flash_size * 1024;
455 sl->flash_pgsz = params->flash_pagesize;
456 sl->sram_size = params->sram_size;
457 sl->sys_base = params->bootrom_base;
458 sl->sys_size = params->bootrom_size;
460 ILOG("Device connected is: %s\n", params->description);
461 // TODO make note of variable page size here.....
462 ILOG("SRAM size: %#x bytes (%d KiB), Flash: %#x bytes (%d KiB) in pages of %zd bytes\n",
463 sl->sram_size, sl->sram_size / 1024, sl->flash_size, sl->flash_size / 1024,
468 void stlink_reset(stlink_t *sl) {
469 DLOG("*** stlink_reset ***\n");
470 sl->backend->reset(sl);
473 void stlink_run(stlink_t *sl) {
474 DLOG("*** stlink_run ***\n");
475 sl->backend->run(sl);
478 void stlink_status(stlink_t *sl) {
479 DLOG("*** stlink_status ***\n");
480 sl->backend->status(sl);
481 stlink_core_stat(sl);
485 * Decode the version bits, originally from -sg, verified with usb
486 * @param sl stlink context, assumed to contain valid data in the buffer
487 * @param slv output parsed version object
489 void _parse_version(stlink_t *sl, stlink_version_t *slv) {
490 uint32_t b0 = sl->q_buf[0]; //lsb
491 uint32_t b1 = sl->q_buf[1];
492 uint32_t b2 = sl->q_buf[2];
493 uint32_t b3 = sl->q_buf[3];
494 uint32_t b4 = sl->q_buf[4];
495 uint32_t b5 = sl->q_buf[5]; //msb
497 // b0 b1 || b2 b3 | b4 b5
498 // 4b | 6b | 6b || 2B | 2B
499 // stlink_v | jtag_v | swim_v || st_vid | stlink_pid
501 slv->stlink_v = (b0 & 0xf0) >> 4;
502 slv->jtag_v = ((b0 & 0x0f) << 2) | ((b1 & 0xc0) >> 6);
503 slv->swim_v = b1 & 0x3f;
504 slv->st_vid = (b3 << 8) | b2;
505 slv->stlink_pid = (b5 << 8) | b4;
509 void stlink_version(stlink_t *sl) {
510 DLOG("*** looking up stlink version\n");
511 sl->backend->version(sl);
512 _parse_version(sl, &sl->version);
514 DLOG("st vid = 0x%04x (expect 0x%04x)\n", sl->version.st_vid, USB_ST_VID);
515 DLOG("stlink pid = 0x%04x\n", sl->version.stlink_pid);
516 DLOG("stlink version = 0x%x\n", sl->version.stlink_v);
517 DLOG("jtag version = 0x%x\n", sl->version.jtag_v);
518 DLOG("swim version = 0x%x\n", sl->version.swim_v);
519 if (sl->version.jtag_v == 0) {
520 DLOG(" notice: the firmware doesn't support a jtag/swd interface\n");
522 if (sl->version.swim_v == 0) {
523 DLOG(" notice: the firmware doesn't support a swim interface\n");
527 void stlink_write_mem32(stlink_t *sl, uint32_t addr, uint16_t len) {
528 DLOG("*** stlink_write_mem32 %u bytes to %#x\n", len, addr);
530 fprintf(stderr, "Error: Data length doesn't have a 32 bit alignment: +%d byte.\n", len % 4);
533 sl->backend->write_mem32(sl, addr, len);
536 void stlink_read_mem32(stlink_t *sl, uint32_t addr, uint16_t len) {
537 DLOG("*** stlink_read_mem32 ***\n");
538 if (len % 4 != 0) { // !!! never ever: fw gives just wrong values
539 fprintf(stderr, "Error: Data length doesn't have a 32 bit alignment: +%d byte.\n",
543 sl->backend->read_mem32(sl, addr, len);
546 void stlink_write_mem8(stlink_t *sl, uint32_t addr, uint16_t len) {
547 DLOG("*** stlink_write_mem8 ***\n");
548 sl->backend->write_mem8(sl, addr, len);
551 void stlink_read_all_regs(stlink_t *sl, reg *regp) {
552 DLOG("*** stlink_read_all_regs ***\n");
553 sl->backend->read_all_regs(sl, regp);
556 void stlink_write_reg(stlink_t *sl, uint32_t reg, int idx) {
557 DLOG("*** stlink_write_reg\n");
558 sl->backend->write_reg(sl, reg, idx);
561 void stlink_read_reg(stlink_t *sl, int r_idx, reg *regp) {
562 DLOG("*** stlink_read_reg\n");
563 DLOG(" (%d) ***\n", r_idx);
565 if (r_idx > 20 || r_idx < 0) {
566 fprintf(stderr, "Error: register index must be in [0..20]\n");
570 sl->backend->read_reg(sl, r_idx, regp);
573 unsigned int is_core_halted(stlink_t *sl) {
574 /* return non zero if core is halted */
576 return sl->q_buf[0] == STLINK_CORE_HALTED;
579 void stlink_step(stlink_t *sl) {
580 DLOG("*** stlink_step ***\n");
581 sl->backend->step(sl);
584 int stlink_current_mode(stlink_t *sl) {
585 int mode = sl->backend->current_mode(sl);
587 case STLINK_DEV_DFU_MODE:
588 DLOG("stlink current mode: dfu\n");
590 case STLINK_DEV_DEBUG_MODE:
591 DLOG("stlink current mode: debug (jtag or swd)\n");
593 case STLINK_DEV_MASS_MODE:
594 DLOG("stlink current mode: mass\n");
597 DLOG("stlink mode: unknown!\n");
598 return STLINK_DEV_UNKNOWN_MODE;
604 // End of delegates.... Common code below here...
607 // http://www.ibm.com/developerworks/aix/library/au-endianc/index.html
609 // #define is_bigendian() ( (*(char*)&i) == 0 )
611 inline unsigned int is_bigendian(void) {
612 static volatile const unsigned int i = 1;
613 return *(volatile const char*) &i == 0;
616 uint16_t read_uint16(const unsigned char *c, const int pt) {
618 char *p = (char *) &ui;
620 if (!is_bigendian()) { // le -> le (don't swap)
630 // same as above with entrypoint.
632 void stlink_run_at(stlink_t *sl, stm32_addr_t addr) {
633 stlink_write_reg(sl, addr, 15); /* pc register */
637 while (is_core_halted(sl) == 0)
641 void stlink_core_stat(stlink_t *sl) {
645 switch (sl->q_buf[0]) {
646 case STLINK_CORE_RUNNING:
647 sl->core_stat = STLINK_CORE_RUNNING;
648 DLOG(" core status: running\n");
650 case STLINK_CORE_HALTED:
651 sl->core_stat = STLINK_CORE_HALTED;
652 DLOG(" core status: halted\n");
655 sl->core_stat = STLINK_CORE_STAT_UNKNOWN;
656 fprintf(stderr, " core status: unknown\n");
660 void stlink_print_data(stlink_t * sl) {
661 if (sl->q_len <= 0 || sl->verbose < UDEBUG)
664 fprintf(stdout, "data_len = %d 0x%x\n", sl->q_len, sl->q_len);
666 for (int i = 0; i < sl->q_len; i++) {
669 if (sl->q_data_dir == Q_DATA_OUT)
670 fprintf(stdout, "\n<- 0x%08x ", sl->q_addr + i);
672 fprintf(stdout, "\n-> 0x%08x ", sl->q_addr + i);
675 fprintf(stdout, " %02x", (unsigned int) sl->q_buf[i]);
677 fputs("\n\n", stdout);
680 /* memory mapped file */
682 typedef struct mapped_file {
687 #define MAPPED_FILE_INITIALIZER { NULL, 0 }
689 static int map_file(mapped_file_t* mf, const char* path) {
693 const int fd = open(path, O_RDONLY);
695 fprintf(stderr, "open(%s) == -1\n", path);
699 if (fstat(fd, &st) == -1) {
700 fprintf(stderr, "fstat() == -1\n");
704 mf->base = (uint8_t*) mmap(NULL, st.st_size, PROT_READ, MAP_SHARED, fd, 0);
705 if (mf->base == MAP_FAILED) {
706 fprintf(stderr, "mmap() == MAP_FAILED\n");
710 mf->len = st.st_size;
721 static void unmap_file(mapped_file_t * mf) {
722 munmap((void*) mf->base, mf->len);
723 mf->base = (unsigned char*) MAP_FAILED;
727 static int check_file(stlink_t* sl, mapped_file_t* mf, stm32_addr_t addr) {
730 for (off = 0; off < mf->len; off += sl->flash_pgsz) {
733 /* adjust last page size */
734 size_t cmp_size = sl->flash_pgsz;
735 if ((off + sl->flash_pgsz) > mf->len)
736 cmp_size = mf->len - off;
738 aligned_size = cmp_size;
739 if (aligned_size & (4 - 1))
740 aligned_size = (cmp_size + 4) & ~(4 - 1);
742 stlink_read_mem32(sl, addr + off, aligned_size);
744 if (memcmp(sl->q_buf, mf->base + off, cmp_size))
751 int stlink_fwrite_sram
752 (stlink_t * sl, const char* path, stm32_addr_t addr) {
753 /* write the file in sram at addr */
757 mapped_file_t mf = MAPPED_FILE_INITIALIZER;
759 if (map_file(&mf, path) == -1) {
760 fprintf(stderr, "map_file() == -1\n");
764 /* check addr range is inside the sram */
765 if (addr < sl->sram_base) {
766 fprintf(stderr, "addr too low\n");
768 } else if ((addr + mf.len) < addr) {
769 fprintf(stderr, "addr overruns\n");
771 } else if ((addr + mf.len) > (sl->sram_base + sl->sram_size)) {
772 fprintf(stderr, "addr too high\n");
774 } else if ((addr & 3) || (mf.len & 3)) {
776 fprintf(stderr, "unaligned addr or size\n");
780 /* do the copy by 1k blocks */
781 for (off = 0; off < mf.len; off += 1024) {
783 if ((off + size) > mf.len)
786 memcpy(sl->q_buf, mf.base + off, size);
788 /* round size if needed */
792 stlink_write_mem32(sl, addr + off, size);
795 /* check the file ha been written */
796 if (check_file(sl, &mf, addr) == -1) {
797 fprintf(stderr, "check_file() == -1\n");
809 int stlink_fread(stlink_t* sl, const char* path, stm32_addr_t addr, size_t size) {
810 /* read size bytes from addr to file */
815 const int fd = open(path, O_RDWR | O_TRUNC | O_CREAT, 00700);
817 fprintf(stderr, "open(%s) == -1\n", path);
821 /* do the copy by 1k blocks */
822 for (off = 0; off < size; off += 1024) {
823 size_t read_size = 1024;
825 if ((off + read_size) > size)
826 read_size = size - off;
828 /* round size if needed */
829 rounded_size = read_size;
830 if (rounded_size & 3)
831 rounded_size = (rounded_size + 4) & ~(3);
833 stlink_read_mem32(sl, addr + off, rounded_size);
835 if (write(fd, sl->q_buf, read_size) != (ssize_t) read_size) {
836 fprintf(stderr, "write() != read_size\n");
850 int write_buffer_to_sram(stlink_t *sl, flash_loader_t* fl, const uint8_t* buf, size_t size) {
851 /* write the buffer right after the loader */
852 memcpy(sl->q_buf, buf, size);
853 stlink_write_mem8(sl, fl->buf_addr, size);
857 uint32_t calculate_F4_sectornum(uint32_t flashaddr){
858 flashaddr &= ~STM32_FLASH_BASE; //Page now holding the actual flash address
859 if (flashaddr<0x4000) return (0);
860 else if(flashaddr<0x8000) return(1);
861 else if(flashaddr<0xc000) return(2);
862 else if(flashaddr<0x10000) return(3);
863 else if(flashaddr<0x20000) return(4);
864 else return(flashaddr/0x20000)+4;
868 uint32_t stlink_calculate_pagesize(stlink_t *sl, uint32_t flashaddr){
869 if(sl->chip_id == STM32F4_CHIP_ID) {
870 uint32_t sector=calculate_F4_sectornum(flashaddr);
871 if (sector<4) sl->flash_pgsz=0x4000;
872 else if(sector<5) sl->flash_pgsz=0x10000;
873 else sl->flash_pgsz=0x20000;
875 return (sl->flash_pgsz);
879 * Erase a page of flash, assumes sl is fully populated with things like chip/core ids
880 * @param sl stlink context
881 * @param flashaddr an address in the flash page to erase
882 * @return 0 on success -ve on failure
884 int stlink_erase_flash_page(stlink_t *sl, stm32_addr_t flashaddr)
886 ILOG("Erasing flash page at addr: %#x\n", flashaddr);
887 if (sl->chip_id == STM32F4_CHIP_ID)
889 /* wait for ongoing op to finish */
892 /* unlock if locked */
895 /* select the page to erase */
896 // calculate the actual page from the address
897 uint32_t sector=calculate_F4_sectornum(flashaddr);
899 fprintf(stderr, "EraseFlash - Sector:0x%x Size:0x%x\n", sector, stlink_calculate_pagesize(sl, flashaddr));
900 write_flash_cr_snb(sl, sector);
902 /* start erase operation */
903 set_flash_cr_strt(sl);
905 /* wait for completion */
908 /* relock the flash */
909 //todo: fails to program if this is in
912 fprintf(stdout, "Erase Final CR:0x%x\n", read_flash_cr(sl));
915 else if (sl->core_id == STM32L_CORE_ID)
920 /* disable pecr protection */
921 write_uint32(sl->q_buf, 0x89abcdef);
922 stlink_write_mem32(sl, STM32L_FLASH_PEKEYR, sizeof(uint32_t));
923 write_uint32(sl->q_buf, 0x02030405);
924 stlink_write_mem32(sl, STM32L_FLASH_PEKEYR, sizeof(uint32_t));
926 /* check pecr.pelock is cleared */
927 stlink_read_mem32(sl, STM32L_FLASH_PECR, sizeof(uint32_t));
928 val = read_uint32(sl->q_buf, 0);
931 WLOG("pecr.pelock not clear (%#x)\n", val);
935 /* unlock program memory */
936 write_uint32(sl->q_buf, 0x8c9daebf);
937 stlink_write_mem32(sl, STM32L_FLASH_PRGKEYR, sizeof(uint32_t));
938 write_uint32(sl->q_buf, 0x13141516);
939 stlink_write_mem32(sl, STM32L_FLASH_PRGKEYR, sizeof(uint32_t));
941 /* check pecr.prglock is cleared */
942 stlink_read_mem32(sl, STM32L_FLASH_PECR, sizeof(uint32_t));
943 val = read_uint32(sl->q_buf, 0);
946 WLOG("pecr.prglock not clear (%#x)\n", val);
950 /* unused: unlock the option byte block */
952 write_uint32(sl->q_buf, 0xfbead9c8);
953 stlink_write_mem32(sl, STM32L_FLASH_OPTKEYR, sizeof(uint32_t));
954 write_uint32(sl->q_buf, 0x24252627);
955 stlink_write_mem32(sl, STM32L_FLASH_OPTKEYR, sizeof(uint32_t));
957 /* check pecr.optlock is cleared */
958 stlink_read_mem32(sl, STM32L_FLASH_PECR, sizeof(uint32_t));
959 val = read_uint32(sl->q_buf, 0);
962 fprintf(stderr, "pecr.prglock not clear\n");
967 /* set pecr.{erase,prog} */
968 val |= (1 << 9) | (1 << 3);
969 write_uint32(sl->q_buf, val);
970 stlink_write_mem32(sl, STM32L_FLASH_PECR, sizeof(uint32_t));
972 #if 0 /* fix_to_be_confirmed */
974 /* wait for sr.busy to be cleared
975 MP: Test shows that busy bit is not set here. Perhaps, PM0062 is
976 wrong and we do not need to wait here for clearing the busy bit.
977 TEXANE: ok, if experience says so and it works for you, we comment
978 it. If someone has a problem, please drop an email.
982 stlink_read_mem32(sl, STM32L_FLASH_SR, sizeof(uint32_t));
983 if ((read_uint32(sl->q_buf, 0) & (1 << 0)) == 0) break ;
986 #endif /* fix_to_be_confirmed */
988 /* write 0 to the first word of the page to be erased */
989 memset(sl->q_buf, 0, sizeof(uint32_t));
990 stlink_write_mem32(sl, flashaddr, sizeof(uint32_t));
992 /* MP: It is better to wait for clearing the busy bit after issuing
993 page erase command, even though PM0062 recommends to wait before it.
994 Test shows that a few iterations is performed in the following loop
995 before busy bit is cleared.*/
998 stlink_read_mem32(sl, STM32L_FLASH_SR, sizeof(uint32_t));
999 if ((read_uint32(sl->q_buf, 0) & (1 << 0)) == 0) break;
1002 /* reset lock bits */
1003 stlink_read_mem32(sl, STM32L_FLASH_PECR, sizeof(uint32_t));
1004 val = read_uint32(sl->q_buf, 0) | (1 << 0) | (1 << 1) | (1 << 2);
1005 write_uint32(sl->q_buf, val);
1006 stlink_write_mem32(sl, STM32L_FLASH_PECR, sizeof(uint32_t));
1008 else if (sl->core_id == STM32VL_CORE_ID)
1010 /* wait for ongoing op to finish */
1011 wait_flash_busy(sl);
1013 /* unlock if locked */
1014 unlock_flash_if(sl);
1016 /* set the page erase bit */
1017 set_flash_cr_per(sl);
1019 /* select the page to erase */
1020 write_flash_ar(sl, flashaddr);
1022 /* start erase operation, reset by hw with bsy bit */
1023 set_flash_cr_strt(sl);
1025 /* wait for completion */
1026 wait_flash_busy(sl);
1028 /* relock the flash */
1033 WLOG("unknown coreid: %x\n", sl->core_id);
1037 /* todo: verify the erased page */
1042 int stlink_erase_flash_mass(stlink_t *sl) {
1043 /* wait for ongoing op to finish */
1044 wait_flash_busy(sl);
1046 /* unlock if locked */
1047 unlock_flash_if(sl);
1049 /* set the mass erase bit */
1050 set_flash_cr_mer(sl);
1052 /* start erase operation, reset by hw with bsy bit */
1053 set_flash_cr_strt(sl);
1055 /* wait for completion */
1056 wait_flash_busy(sl);
1058 /* relock the flash */
1061 /* todo: verify the erased memory */
1066 int init_flash_loader(stlink_t *sl, flash_loader_t* fl) {
1069 /* allocate the loader in sram */
1070 if (write_loader_to_sram(sl, &fl->loader_addr, &size) == -1) {
1071 WLOG("Failed to write flash loader to sram!\n");
1075 /* allocate a one page buffer in sram right after loader */
1076 fl->buf_addr = fl->loader_addr + size;
1077 ILOG("Successfully loaded flash loader in sram\n");
1081 int write_loader_to_sram(stlink_t *sl, stm32_addr_t* addr, size_t* size) {
1082 /* from openocd, contrib/loaders/flash/stm32.s */
1083 static const uint8_t loader_code_stm32vl[] = {
1084 0x08, 0x4c, /* ldr r4, STM32_FLASH_BASE */
1085 0x1c, 0x44, /* add r4, r3 */
1086 /* write_half_word: */
1087 0x01, 0x23, /* movs r3, #0x01 */
1088 0x23, 0x61, /* str r3, [r4, #STM32_FLASH_CR_OFFSET] */
1089 0x30, 0xf8, 0x02, 0x3b, /* ldrh r3, [r0], #0x02 */
1090 0x21, 0xf8, 0x02, 0x3b, /* strh r3, [r1], #0x02 */
1092 0xe3, 0x68, /* ldr r3, [r4, #STM32_FLASH_SR_OFFSET] */
1093 0x13, 0xf0, 0x01, 0x0f, /* tst r3, #0x01 */
1094 0xfb, 0xd0, /* beq busy */
1095 0x13, 0xf0, 0x14, 0x0f, /* tst r3, #0x14 */
1096 0x01, 0xd1, /* bne exit */
1097 0x01, 0x3a, /* subs r2, r2, #0x01 */
1098 0xf0, 0xd1, /* bne write_half_word */
1100 0x00, 0xbe, /* bkpt #0x00 */
1101 0x00, 0x20, 0x02, 0x40, /* STM32_FLASH_BASE: .word 0x40022000 */
1104 static const uint8_t loader_code_stm32l[] = {
1106 /* openocd.git/contrib/loaders/flash/stm32lx.S
1107 r0, input, dest addr
1108 r1, input, source addr
1109 r2, input, word count
1110 r3, output, word count
1116 0x51, 0xf8, 0x04, 0xcb,
1117 0x40, 0xf8, 0x04, 0xcb,
1125 const uint8_t* loader_code;
1128 if (sl->core_id == STM32L_CORE_ID) /* stm32l */
1130 loader_code = loader_code_stm32l;
1131 loader_size = sizeof(loader_code_stm32l);
1133 else if (sl->core_id == STM32VL_CORE_ID)
1135 loader_code = loader_code_stm32vl;
1136 loader_size = sizeof(loader_code_stm32vl);
1140 WLOG("unknown coreid, not sure what flash loader to use, aborting!: %x\n", sl->core_id);
1144 memcpy(sl->q_buf, loader_code, loader_size);
1145 stlink_write_mem32(sl, sl->sram_base, loader_size);
1147 *addr = sl->sram_base;
1148 *size = loader_size;
1154 int stlink_fcheck_flash(stlink_t *sl, const char* path, stm32_addr_t addr) {
1155 /* check the contents of path are at addr */
1158 mapped_file_t mf = MAPPED_FILE_INITIALIZER;
1160 if (map_file(&mf, path) == -1)
1163 res = check_file(sl, &mf, addr);
1171 * Verify addr..addr+len is binary identical to base...base+len
1172 * @param sl stlink context
1173 * @param address stm device address
1174 * @param data host side buffer to check against
1175 * @param length how much
1176 * @return 0 for success, -ve for failure
1178 int stlink_verify_write_flash(stlink_t *sl, stm32_addr_t address, uint8_t *data, unsigned length) {
1180 if ((sl->chip_id & 0xFFF) == STM32_CHIPID_F4) {
1181 DLOG("(FIXME)Skipping verification for F4, not enough ram (yet)\n");
1184 ILOG("Starting verification of write complete\n");
1185 for (off = 0; off < length; off += sl->flash_pgsz) {
1186 size_t aligned_size;
1188 /* adjust last page size */
1189 size_t cmp_size = sl->flash_pgsz;
1190 if ((off + sl->flash_pgsz) > length)
1191 cmp_size = length - off;
1193 aligned_size = cmp_size;
1194 if (aligned_size & (4 - 1))
1195 aligned_size = (cmp_size + 4) & ~(4 - 1);
1197 stlink_read_mem32(sl, address + off, aligned_size);
1199 if (memcmp(sl->q_buf, data + off, cmp_size)) {
1200 WLOG("Verification of flash failed at offset: %zd\n", off);
1204 ILOG("Flash written and verified! jolly good!\n");
1209 int stlink_write_flash(stlink_t *sl, stm32_addr_t addr, uint8_t* base, unsigned len) {
1212 ILOG("Attempting to write %d (%#x) bytes to stm32 address: %u (%#x)\n",
1213 len, len, addr, addr);
1214 /* check addr range is inside the flash */
1215 stlink_calculate_pagesize(sl, addr);
1216 if (addr < sl->flash_base) {
1217 WLOG("addr too low %#x < %#x\n", addr, sl->flash_base);
1219 } else if ((addr + len) < addr) {
1220 WLOG("addr overruns\n");
1222 } else if ((addr + len) > (sl->flash_base + sl->flash_size)) {
1223 WLOG("addr too high\n");
1225 } else if ((addr & 1) || (len & 1)) {
1226 WLOG("unaligned addr or size\n");
1228 } else if (addr & (sl->flash_pgsz - 1)) {
1229 WLOG("addr not a multiple of pagesize, not supported\n");
1233 // Make sure we've loaded the context with the chip details
1235 /* erase each page */
1237 for (off = 0; off < len; off += stlink_calculate_pagesize(sl, addr + off)) {
1238 /* addr must be an addr inside the page */
1239 if (stlink_erase_flash_page(sl, addr + off) == -1) {
1240 WLOG("Failed to erase_flash_page(%#zx) == -1\n", addr + off);
1245 ILOG("Finished erasing %d pages of %d (%#x) bytes\n",
1246 page_count, sl->flash_pgsz, sl->flash_pgsz);
1248 if (sl->chip_id == STM32F4_CHIP_ID) {
1249 /* todo: check write operation */
1251 /* First unlock the cr */
1252 unlock_flash_if(sl);
1254 /* set parallelisim to 32 bit*/
1255 write_flash_cr_psiz(sl, 2);
1257 /* set programming mode */
1258 set_flash_cr_pg(sl);
1260 #define PROGRESS_CHUNK_SIZE 0x1000
1261 /* write a word in program memory */
1262 for (off = 0; off < len; off += sizeof(uint32_t)) {
1263 if (sl->verbose >= 1) {
1264 if ((off & (PROGRESS_CHUNK_SIZE - 1)) == 0) {
1265 /* show progress. writing procedure is slow
1266 and previous errors are misleading */
1267 const uint32_t pgnum = (off / PROGRESS_CHUNK_SIZE)+1;
1268 const uint32_t pgcount = len / PROGRESS_CHUNK_SIZE;
1269 fprintf(stdout, "Writing %ukB chunk %u out of %u\n", PROGRESS_CHUNK_SIZE/1024, pgnum, pgcount);
1273 memcpy(sl->q_buf, (const void*)(base + off), sizeof(uint32_t));
1274 stlink_write_mem32(sl, addr + off, sizeof(uint32_t));
1276 /* wait for sr.busy to be cleared */
1277 wait_flash_busy(sl);
1283 #if 0 /* todo: debug mode */
1284 fprintf(stdout, "Final CR:0x%x\n", read_flash_cr(sl));
1291 else if (sl->core_id == STM32L_CORE_ID) {
1292 /* use fast word write. todo: half page. */
1295 #if 0 /* todo: check write operation */
1297 uint32_t nwrites = sl->flash_pgsz;
1301 #endif /* todo: check write operation */
1303 /* disable pecr protection */
1304 write_uint32(sl->q_buf, 0x89abcdef);
1305 stlink_write_mem32(sl, STM32L_FLASH_PEKEYR, sizeof(uint32_t));
1306 write_uint32(sl->q_buf, 0x02030405);
1307 stlink_write_mem32(sl, STM32L_FLASH_PEKEYR, sizeof(uint32_t));
1309 /* check pecr.pelock is cleared */
1310 stlink_read_mem32(sl, STM32L_FLASH_PECR, sizeof(uint32_t));
1311 val = read_uint32(sl->q_buf, 0);
1312 if (val & (1 << 0)) {
1313 fprintf(stderr, "pecr.pelock not clear\n");
1317 /* unlock program memory */
1318 write_uint32(sl->q_buf, 0x8c9daebf);
1319 stlink_write_mem32(sl, STM32L_FLASH_PRGKEYR, sizeof(uint32_t));
1320 write_uint32(sl->q_buf, 0x13141516);
1321 stlink_write_mem32(sl, STM32L_FLASH_PRGKEYR, sizeof(uint32_t));
1323 /* check pecr.prglock is cleared */
1324 stlink_read_mem32(sl, STM32L_FLASH_PECR, sizeof(uint32_t));
1325 val = read_uint32(sl->q_buf, 0);
1326 if (val & (1 << 1)) {
1327 fprintf(stderr, "pecr.prglock not clear\n");
1331 /* write a word in program memory */
1332 for (off = 0; off < len; off += sizeof(uint32_t)) {
1333 if (sl->verbose >= 1) {
1334 if ((off & (sl->flash_pgsz - 1)) == 0) {
1335 /* show progress. writing procedure is slow
1336 and previous errors are misleading */
1337 const uint32_t pgnum = off / sl->flash_pgsz;
1338 const uint32_t pgcount = len / sl->flash_pgsz;
1339 fprintf(stdout, "%u pages written out of %u\n", pgnum, pgcount);
1343 memcpy(sl->q_buf, (const void*)(base + off), sizeof(uint32_t));
1344 stlink_write_mem32(sl, addr + off, sizeof(uint32_t));
1346 /* wait for sr.busy to be cleared */
1348 stlink_read_mem32(sl, STM32L_FLASH_SR, sizeof(uint32_t));
1349 if ((read_uint32(sl->q_buf, 0) & (1 << 0)) == 0) break ;
1352 #if 0 /* todo: check redo write operation */
1354 /* check written bytes. todo: should be on a per page basis. */
1355 stlink_read_mem32(sl, addr + off, sizeof(uint32_t));
1356 if (memcmp(sl->q_buf, base + off, sizeof(uint32_t))) {
1357 /* re erase the page and redo the write operation */
1361 /* fail if successive write count too low */
1362 if (nwrites < sl->flash_pgsz) {
1363 fprintf(stderr, "writes operation failure count too high, aborting\n");
1369 /* assume addr aligned */
1370 if (off % sl->flash_pgsz) off &= ~(sl->flash_pgsz - 1);
1373 fprintf(stderr, "invalid write @0x%x(0x%x): 0x%x != 0x%x. retrying.\n",
1374 page, addr + off, read_uint32(base + off, 0), read_uint32(sl->q_buf, 0));
1376 /* reset lock bits */
1377 stlink_read_mem32(sl, STM32L_FLASH_PECR, sizeof(uint32_t));
1378 val = read_uint32(sl->q_buf, 0) | (1 << 0) | (1 << 1) | (1 << 2);
1379 write_uint32(sl->q_buf, val);
1380 stlink_write_mem32(sl, STM32L_FLASH_PECR, sizeof(uint32_t));
1382 stlink_erase_flash_page(sl, page);
1387 /* increment successive writes counter */
1390 #endif /* todo: check redo write operation */
1392 /* reset lock bits */
1393 stlink_read_mem32(sl, STM32L_FLASH_PECR, sizeof(uint32_t));
1394 val = read_uint32(sl->q_buf, 0) | (1 << 0) | (1 << 1) | (1 << 2);
1395 write_uint32(sl->q_buf, val);
1396 stlink_write_mem32(sl, STM32L_FLASH_PECR, sizeof(uint32_t));
1397 } else if (sl->core_id == STM32VL_CORE_ID) {
1398 ILOG("Starting Flash write for VL core id\n");
1399 /* flash loader initialization */
1400 if (init_flash_loader(sl, &fl) == -1) {
1401 WLOG("init_flash_loader() == -1\n");
1405 /* write each page. above WRITE_BLOCK_SIZE fails? */
1406 #define WRITE_BLOCK_SIZE 0x40
1407 int write_block_count = 0;
1408 for (off = 0; off < len; off += WRITE_BLOCK_SIZE) {
1409 ILOG("Writing flash block %d of size %d (%#x)\n", write_block_count,
1410 WRITE_BLOCK_SIZE, WRITE_BLOCK_SIZE);
1411 /* adjust last write size */
1412 size_t size = WRITE_BLOCK_SIZE;
1413 if ((off + WRITE_BLOCK_SIZE) > len) size = len - off;
1415 /* unlock and set programming mode */
1416 unlock_flash_if(sl);
1417 set_flash_cr_pg(sl);
1418 //DLOG("Finished setting flash cr pg, running loader!\n");
1419 if (run_flash_loader(sl, &fl, addr + off, base + off, size) == -1) {
1420 WLOG("run_flash_loader(%#zx) failed! == -1\n", addr + off);
1424 DLOG("Finished writing block %d\n", write_block_count++);
1427 WLOG("unknown coreid, not sure how to write: %x\n", sl->core_id);
1431 return stlink_verify_write_flash(sl, addr, base, len);
1435 * Write the given binary file into flash at address "addr"
1437 * @param path readable file path, should be binary image
1438 * @param addr where to start writing
1439 * @return 0 on success, -ve on failure.
1441 int stlink_fwrite_flash(stlink_t *sl, const char* path, stm32_addr_t addr) {
1442 /* write the file in flash at addr */
1444 mapped_file_t mf = MAPPED_FILE_INITIALIZER;
1445 if (map_file(&mf, path) == -1) {
1446 WLOG("map_file() == -1\n");
1449 err = stlink_write_flash(sl, addr, mf.base, mf.len);
1454 int run_flash_loader(stlink_t *sl, flash_loader_t* fl, stm32_addr_t target, const uint8_t* buf, size_t size) {
1457 DLOG("Running flash loader, write address:%#x, size: %zd\n", target, size);
1458 // FIXME This can never return -1
1459 if (write_buffer_to_sram(sl, fl, buf, size) == -1) {
1461 WLOG("write_buffer_to_sram() == -1\n");
1465 if (sl->core_id == STM32L_CORE_ID) {
1467 size_t count = size / sizeof(uint32_t);
1468 if (size % sizeof(uint32_t)) ++count;
1471 stlink_write_reg(sl, target, 0); /* target */
1472 stlink_write_reg(sl, fl->buf_addr, 1); /* source */
1473 stlink_write_reg(sl, count, 2); /* count (32 bits words) */
1474 stlink_write_reg(sl, 0, 3); /* output count */
1475 stlink_write_reg(sl, fl->loader_addr, 15); /* pc register */
1477 } else if (sl->core_id == STM32VL_CORE_ID) {
1479 size_t count = size / sizeof(uint16_t);
1480 if (size % sizeof(uint16_t)) ++count;
1483 stlink_write_reg(sl, fl->buf_addr, 0); /* source */
1484 stlink_write_reg(sl, target, 1); /* target */
1485 stlink_write_reg(sl, count, 2); /* count (16 bits half words) */
1486 stlink_write_reg(sl, 0, 3); /* flash bank 0 (input) */
1487 stlink_write_reg(sl, fl->loader_addr, 15); /* pc register */
1490 fprintf(stderr, "unknown coreid: 0x%x\n", sl->core_id);
1497 /* wait until done (reaches breakpoint) */
1498 while (is_core_halted(sl) == 0) ;
1500 /* check written byte count */
1501 if (sl->core_id == STM32L_CORE_ID) {
1503 size_t count = size / sizeof(uint32_t);
1504 if (size % sizeof(uint32_t)) ++count;
1506 stlink_read_reg(sl, 3, &rr);
1507 if (rr.r[3] != count) {
1508 fprintf(stderr, "write error, count == %u\n", rr.r[3]);
1512 } else if (sl->core_id == STM32VL_CORE_ID) {
1514 stlink_read_reg(sl, 2, &rr);
1516 fprintf(stderr, "write error, count == %u\n", rr.r[2]);
1522 fprintf(stderr, "unknown coreid: 0x%x\n", sl->core_id);