#define STM32L_FLASH_PRGKEYR (STM32L_FLASH_REGS_ADDR + 0x10)
#define STM32L_FLASH_OPTKEYR (STM32L_FLASH_REGS_ADDR + 0x14)
#define STM32L_FLASH_SR (STM32L_FLASH_REGS_ADDR + 0x18)
-#define STM32L_FLASH_OBR (STM32L_FLASH_REGS_ADDR + 0x0c)
+#define STM32L_FLASH_OBR (STM32L_FLASH_REGS_ADDR + 0x1c)
#define STM32L_FLASH_WRPR (STM32L_FLASH_REGS_ADDR + 0x20)
+#define FLASH_L1_FPRG 10
+#define FLASH_L1_PROG 3
//STM32F4
return -1;
}
}
- ILOG("Successfully unlocked flash\n");
+ DLOG("Successfully unlocked flash\n");
return 0;
}
}
static void set_flash_cr_mer(stlink_t *sl) {
- const uint32_t n = 1 << FLASH_CR_MER;
- stlink_write_debug32(sl, FLASH_CR, n);
+ if(sl->chip_id == STM32F4_CHIP_ID)
+ stlink_write_debug32(sl, FLASH_F4_CR,
+ stlink_read_debug32(sl, FLASH_F4_CR) | (1 << FLASH_CR_MER));
+ else
+ stlink_write_debug32(sl, FLASH_CR,
+ stlink_read_debug32(sl, FLASH_CR) | (1 << FLASH_CR_MER));
}
static void __attribute__((unused)) clear_flash_cr_mer(stlink_t *sl) {
- const uint32_t n = read_flash_cr(sl) & ~(1 << FLASH_CR_MER);
- stlink_write_debug32(sl, FLASH_CR, n);
+ if(sl->chip_id == STM32F4_CHIP_ID)
+ stlink_write_debug32(sl, FLASH_F4_CR,
+ stlink_read_debug32(sl, FLASH_F4_CR) & ~(1 << FLASH_CR_MER));
+ else
+ stlink_write_debug32(sl, FLASH_CR,
+ stlink_read_debug32(sl, FLASH_CR) & ~(1 << FLASH_CR_MER));
}
static void set_flash_cr_strt(stlink_t *sl) {
stlink_write_debug32(sl, FLASH_F4_CR, x);
}
else {
- /* assume come on the flash_cr_per path */
- const uint32_t n = (1 << FLASH_CR_PER) | (1 << FLASH_CR_STRT);
- stlink_write_debug32(sl, FLASH_CR, n);
+ stlink_write_debug32(
+ sl, FLASH_CR,
+ stlink_read_debug32(sl,FLASH_CR) |(1 << FLASH_CR_STRT) );
}
}
;
}
+static void wait_flash_busy_progress(stlink_t *sl) {
+ int i = 0;
+ fprintf(stdout, "Mass erasing");
+ fflush(stdout);
+ while (is_flash_busy(sl))
+ {
+ usleep(10000);
+ i++;
+ if (i % 100 == 0) {
+ fprintf(stdout, ".");
+ fflush(stdout);
+ }
+ }
+ fprintf(stdout, "\n");
+}
+
static inline unsigned int is_flash_eop(stlink_t *sl) {
return read_flash_sr(sl) & (1 << FLASH_SR_EOP);
}
int stlink_load_device_params(stlink_t *sl) {
ILOG("Loading device parameters....\n");
const chip_params_t *params = NULL;
-
sl->core_id = stlink_core_id(sl);
uint32_t chip_id = stlink_chip_id(sl);
- /* Fix chip_id for F4 rev A errata */
- if (((chip_id & 0xFFF) == 0x411) && (sl->core_id == CORE_M4_R0)) {
- chip_id = 0x413;
+ sl->chip_id = chip_id & 0xfff;
+ /* Fix chip_id for F4 rev A errata , Read CPU ID, as CoreID is the same for F2/F4*/
+ if (sl->chip_id == 0x411) {
+ uint32_t cpuid = stlink_read_debug32(sl, 0xE000ED00);
+ if((cpuid & 0xfff0) == 0xc240)
+ sl->chip_id = 0x413;
}
- sl->chip_id = chip_id;
- for(size_t i = 0; i < sizeof(devices) / sizeof(devices[0]); i++) {
- if(devices[i].chip_id == (chip_id & 0xFFF)) {
- params = &devices[i];
- break;
- }
- }
+ for(size_t i = 0; i < sizeof(devices) / sizeof(devices[0]); i++) {
+ if(devices[i].chip_id == sl->chip_id) {
+ params = &devices[i];
+ break;
+ }
+ }
if (params == NULL) {
WLOG("unknown chip id! %#x\n", chip_id);
return -1;
sl->sram_base = STM32_SRAM_BASE;
// read flash size from hardware, if possible...
- if ((chip_id & 0xFFF) == STM32_CHIPID_F2) {
+ if (sl->chip_id == STM32_CHIPID_F2) {
sl->flash_size = 0; // FIXME - need to work this out some other way, just set to max possible?
- } else if ((chip_id & 0xFFF) == STM32_CHIPID_F4) {
+ } else if (sl->chip_id == STM32_CHIPID_F4) {
sl->flash_size = 0x100000; //todo: RM0090 error; size register same address as unique ID
} else {
uint32_t flash_size = stlink_read_debug32(sl, params->flash_size_reg) & 0xffff;
void stlink_write_mem8(stlink_t *sl, uint32_t addr, uint16_t len) {
DLOG("*** stlink_write_mem8 ***\n");
+ if (len > 0x40 ) { // !!! never ever: Writing more then 0x40 bytes gives unexpected behaviour
+ fprintf(stderr, "Error: Data length > 64: +%d byte.\n",
+ len);
+ return;
+ }
sl->backend->write_mem8(sl, addr, len);
}
mf->len = 0;
}
+/* Limit the block size to compare to 0x1800
+ Anything larger will stall the STLINK2
+ Maybe STLINK V1 needs smaller value!*/
static int check_file(stlink_t* sl, mapped_file_t* mf, stm32_addr_t addr) {
size_t off;
+ size_t n_cmp = sl->flash_pgsz;
+ if ( n_cmp > 0x1800)
+ n_cmp = 0x1800;
- for (off = 0; off < mf->len; off += sl->flash_pgsz) {
+ for (off = 0; off < mf->len; off += n_cmp) {
size_t aligned_size;
/* adjust last page size */
- size_t cmp_size = sl->flash_pgsz;
- if ((off + sl->flash_pgsz) > mf->len)
+ size_t cmp_size = n_cmp;
+ if ((off + n_cmp) > mf->len)
cmp_size = mf->len - off;
aligned_size = cmp_size;
/* success */
error = 0;
+ /* set stack*/
+ stlink_write_reg(sl, stlink_read_debug32(sl, addr ),13);
+ /* Set PC to the reset routine*/
+ stlink_write_reg(sl, stlink_read_debug32(sl, addr + 4),15);
+ stlink_run(sl);
on_error:
unmap_file(&mf);
int error = -1;
size_t off;
- int num_zero = 0;
+ int num_empty = 0;
+ unsigned char erased_pattern =(sl->chip_id == STM32_CHIPID_L1_MEDIUM)?0:0xff;
const int fd = open(path, O_RDWR | O_TRUNC | O_CREAT, 00700);
if (fd == -1) {
return -1;
}
+ if (size <1)
+ size = sl->flash_size;
+
+ if (size > sl->flash_size)
+ size = sl->flash_size;
+
/* do the copy by 1k blocks */
for (off = 0; off < size; off += 1024) {
size_t read_size = 1024;
stlink_read_mem32(sl, addr + off, rounded_size);
for(index = 0; index < read_size; index ++) {
- if (sl->q_buf[index] == 0)
- num_zero ++;
+ if (sl->q_buf[index] == erased_pattern)
+ num_empty ++;
else
- num_zero = 0;
+ num_empty = 0;
}
if (write(fd, sl->q_buf, read_size) != (ssize_t) read_size) {
fprintf(stderr, "write() != read_size\n");
}
/* Ignore NULL Bytes at end of file */
- ftruncate(fd, size - num_zero);
+ ftruncate(fd, size - num_empty);
/* success */
error = 0;
int write_buffer_to_sram(stlink_t *sl, flash_loader_t* fl, const uint8_t* buf, size_t size) {
/* write the buffer right after the loader */
- memcpy(sl->q_buf, buf, size);
- stlink_write_mem8(sl, fl->buf_addr, size);
+ size_t chunk = size & ~0x3;
+ size_t rem = size & 0x3;
+ if (chunk) {
+ memcpy(sl->q_buf, buf, chunk);
+ stlink_write_mem32(sl, fl->buf_addr, chunk);
+ }
+ if (rem) {
+ memcpy(sl->q_buf, buf+chunk, rem);
+ stlink_write_mem8(sl, (fl->buf_addr)+chunk, rem);
+ }
return 0;
}
*/
int stlink_erase_flash_page(stlink_t *sl, stm32_addr_t flashaddr)
{
- ILOG("Erasing flash page at addr: %#x\n", flashaddr);
if (sl->chip_id == STM32F4_CHIP_ID)
{
/* wait for ongoing op to finish */
}
int stlink_erase_flash_mass(stlink_t *sl) {
- /* wait for ongoing op to finish */
- wait_flash_busy(sl);
-
- /* unlock if locked */
- unlock_flash_if(sl);
-
- /* set the mass erase bit */
- set_flash_cr_mer(sl);
-
- /* start erase operation, reset by hw with bsy bit */
- set_flash_cr_strt(sl);
-
- /* wait for completion */
- wait_flash_busy(sl);
-
- /* relock the flash */
- lock_flash(sl);
-
- /* todo: verify the erased memory */
-
+ if (sl->chip_id == STM32_CHIPID_L1_MEDIUM) {
+ /* erase each page */
+ int i = 0, num_pages = sl->flash_size/sl->flash_pgsz;
+ for (i = 0; i < num_pages; i++) {
+ /* addr must be an addr inside the page */
+ stm32_addr_t addr = sl->flash_base + i * sl->flash_pgsz;
+ if (stlink_erase_flash_page(sl, addr) == -1) {
+ WLOG("Failed to erase_flash_page(%#zx) == -1\n", addr);
+ return -1;
+ }
+ fprintf(stdout,"\rFlash page at %5d/%5d erased", i, num_pages);
+ fflush(stdout);
+ }
+ fprintf(stdout, "\n");
+ }
+ else {
+ /* wait for ongoing op to finish */
+ wait_flash_busy(sl);
+
+ /* unlock if locked */
+ unlock_flash_if(sl);
+
+ /* set the mass erase bit */
+ set_flash_cr_mer(sl);
+
+ /* start erase operation, reset by hw with bsy bit */
+ set_flash_cr_strt(sl);
+
+ /* wait for completion */
+ wait_flash_busy_progress(sl);
+
+ /* relock the flash */
+ lock_flash(sl);
+
+ /* todo: verify the erased memory */
+ }
return 0;
}
*/
int stlink_verify_write_flash(stlink_t *sl, stm32_addr_t address, uint8_t *data, unsigned length) {
size_t off;
- if ((sl->chip_id & 0xFFF) == STM32_CHIPID_F4) {
+ if (sl->chip_id == STM32_CHIPID_F4) {
DLOG("(FIXME)Skipping verification for F4, not enough ram (yet)\n");
return 0;
}
}
+int stm32l1_write_half_pages(stlink_t *sl, stm32_addr_t addr, uint8_t* base, unsigned num_half_pages)
+{
+ unsigned int count;
+ uint32_t val;
+ flash_loader_t fl;
+
+ ILOG("Starting Half page flash write for STM32L core id\n");
+ /* flash loader initialization */
+ if (init_flash_loader(sl, &fl) == -1) {
+ WLOG("init_flash_loader() == -1\n");
+ return -1;
+ }
+ /* Unlock already done */
+ val = stlink_read_debug32(sl, STM32L_FLASH_PECR);
+ val |= (1 << FLASH_L1_FPRG);
+ stlink_write_debug32(sl, STM32L_FLASH_PECR, val);
+
+ val |= (1 << FLASH_L1_PROG);
+ stlink_write_debug32(sl, STM32L_FLASH_PECR, val);
+ while ((stlink_read_debug32(sl, STM32L_FLASH_SR) & (1 << 0)) != 0) {}
+
+#define L1_WRITE_BLOCK_SIZE 0x80
+ for (count = 0; count < num_half_pages; count ++) {
+ if (run_flash_loader(sl, &fl, addr + count * L1_WRITE_BLOCK_SIZE, base + count * L1_WRITE_BLOCK_SIZE, L1_WRITE_BLOCK_SIZE) == -1) {
+ WLOG("l1_run_flash_loader(%#zx) failed! == -1\n", addr + count * L1_WRITE_BLOCK_SIZE);
+ val = stlink_read_debug32(sl, STM32L_FLASH_PECR);
+ val &= ~((1 << FLASH_L1_FPRG) |(1 << FLASH_L1_PROG));
+ stlink_write_debug32(sl, STM32L_FLASH_PECR, val);
+ return -1;
+ }
+ /* wait for sr.busy to be cleared */
+ if (sl->verbose >= 1) {
+ /* show progress. writing procedure is slow
+ and previous errors are misleading */
+ fprintf(stdout, "\r%3u/%u halfpages written", count, num_half_pages);
+ fflush(stdout);
+ }
+ while ((stlink_read_debug32(sl, STM32L_FLASH_SR) & (1 << 0)) != 0) {
+ }
+ }
+ val = stlink_read_debug32(sl, STM32L_FLASH_PECR);
+ val &= ~(1 << FLASH_L1_PROG);
+ stlink_write_debug32(sl, STM32L_FLASH_PECR, val);
+ val = stlink_read_debug32(sl, STM32L_FLASH_PECR);
+ val &= ~(1 << FLASH_L1_FPRG);
+ stlink_write_debug32(sl, STM32L_FLASH_PECR, val);
+
+ return 0;
+}
+
int stlink_write_flash(stlink_t *sl, stm32_addr_t addr, uint8_t* base, unsigned len) {
size_t off;
flash_loader_t fl;
WLOG("Failed to erase_flash_page(%#zx) == -1\n", addr + off);
return -1;
}
+ fprintf(stdout,"\rFlash page at addr: 0x%08lx erased",
+ (unsigned long)addr + off);
+ fflush(stdout);
page_count++;
}
+ fprintf(stdout,"\n");
ILOG("Finished erasing %d pages of %d (%#x) bytes\n",
page_count, sl->flash_pgsz, sl->flash_pgsz);
/* First unlock the cr */
unlock_flash_if(sl);
+ /* TODO: Check that Voltage range is 2.7 - 3.6 V */
/* set parallelisim to 32 bit*/
write_flash_cr_psiz(sl, 2);
fprintf(stderr, "pecr.prglock not clear\n");
return -1;
}
+ off = 0;
+ if (len > L1_WRITE_BLOCK_SIZE) {
+ if (stm32l1_write_half_pages(sl, addr, base, len/L1_WRITE_BLOCK_SIZE) == -1){
+ /* This may happen on a blank device! */
+ WLOG("\nwrite_half_pages failed == -1\n");
+ }
+ else{
+ off = (len /L1_WRITE_BLOCK_SIZE)*L1_WRITE_BLOCK_SIZE;
+ }
+ }
- /* write a word in program memory */
- for (off = 0; off < len; off += sizeof(uint32_t)) {
+ /* write remainingword in program memory */
+ for ( ; off < len; off += sizeof(uint32_t)) {
uint32_t data;
- if (sl->verbose >= 1) {
- if ((off & (sl->flash_pgsz - 1)) == 0) {
- /* show progress. writing procedure is slow
- and previous errors are misleading */
- const uint32_t pgnum = off / sl->flash_pgsz;
- const uint32_t pgcount = len / sl->flash_pgsz;
- fprintf(stdout, "%u pages written out of %u\n", pgnum, pgcount);
- }
- }
+ if (off > 254)
+ fprintf(stdout, "\r");
+
+ if ((off % sl->flash_pgsz) > (sl->flash_pgsz -5)) {
+ fprintf(stdout, "\r%3u/%u pages written",
+ off/sl->flash_pgsz, len/sl->flash_pgsz);
+ fflush(stdout);
+ }
write_uint32((unsigned char*) &data, *(uint32_t*) (base + off));
stlink_write_debug32(sl, addr + off, data);
#endif /* todo: check redo write operation */
}
+ fprintf(stdout, "\n");
/* reset lock bits */
val = stlink_read_debug32(sl, STM32L_FLASH_PECR)
| (1 << 0) | (1 << 1) | (1 << 2);
return -1;
}
- /* write each page. above WRITE_BLOCK_SIZE fails? */
-#define WRITE_BLOCK_SIZE 0x40
int write_block_count = 0;
- for (off = 0; off < len; off += WRITE_BLOCK_SIZE) {
- ILOG("Writing flash block %d of size %d (%#x)\n", write_block_count,
- WRITE_BLOCK_SIZE, WRITE_BLOCK_SIZE);
+ for (off = 0; off < len; off += sl->flash_pgsz) {
/* adjust last write size */
- size_t size = WRITE_BLOCK_SIZE;
- if ((off + WRITE_BLOCK_SIZE) > len) size = len - off;
+ size_t size = sl->flash_pgsz;
+ if ((off + sl->flash_pgsz) > len) size = len - off;
/* unlock and set programming mode */
unlock_flash_if(sl);
return -1;
}
lock_flash(sl);
- DLOG("Finished writing block %d\n", write_block_count++);
+ if (sl->verbose >= 1) {
+ /* show progress. writing procedure is slow
+ and previous errors are misleading */
+ fprintf(stdout, "\r%3u/%lu pages written", write_block_count++, (unsigned long)len/sl->flash_pgsz);
+ fflush(stdout);
+ }
}
+ fprintf(stdout, "\n");
} else {
WLOG("unknown coreid, not sure how to write: %x\n", sl->core_id);
return -1;
int stlink_fwrite_flash(stlink_t *sl, const char* path, stm32_addr_t addr) {
/* write the file in flash at addr */
int err;
- unsigned int num_zero = 0, index;
+ unsigned int num_empty = 0, index;
+ unsigned char erased_pattern =(sl->chip_id == STM32_CHIPID_L1_MEDIUM)?0:0xff;
mapped_file_t mf = MAPPED_FILE_INITIALIZER;
if (map_file(&mf, path) == -1) {
WLOG("map_file() == -1\n");
return -1;
}
for(index = 0; index < mf.len; index ++) {
- if (mf.base[index] == 0)
- num_zero ++;
+ if (mf.base[index] == erased_pattern)
+ num_empty ++;
else
- num_zero = 0;
+ num_empty = 0;
}
- if(num_zero != 0) {
- ILOG("Ignoring %d bytes of Zeros at end of file\n",num_zero);
- mf.len -= num_zero;
+ if(num_empty != 0) {
+ ILOG("Ignoring %d bytes of Zeros at end of file\n",num_empty);
+ mf.len -= num_empty;
}
err = stlink_write_flash(sl, addr, mf.base, mf.len);
+ /* set stack*/
+ stlink_write_reg(sl, stlink_read_debug32(sl, addr ),13);
+ /* Set PC to the reset routine*/
+ stlink_write_reg(sl, stlink_read_debug32(sl, addr + 4),15);
+ stlink_run(sl);
unmap_file(&mf);
return err;
}
int run_flash_loader(stlink_t *sl, flash_loader_t* fl, stm32_addr_t target, const uint8_t* buf, size_t size) {
reg rr;
+ int i = 0;
DLOG("Running flash loader, write address:%#x, size: %zd\n", target, size);
// FIXME This can never return -1
if (write_buffer_to_sram(sl, fl, buf, size) == -1) {
stlink_write_reg(sl, target, 0); /* target */
stlink_write_reg(sl, fl->buf_addr, 1); /* source */
stlink_write_reg(sl, count, 2); /* count (32 bits words) */
- stlink_write_reg(sl, 0, 3); /* output count */
stlink_write_reg(sl, fl->loader_addr, 15); /* pc register */
} else if (sl->core_id == STM32VL_CORE_ID) {
stlink_run(sl);
/* wait until done (reaches breakpoint) */
- while (is_core_halted(sl) == 0) ;
+ while ((is_core_halted(sl) == 0) && (i <1000))
+ {
+ i++;
+ }
+ if ( i > 999) {
+ fprintf(stderr, "run error\n");
+ return -1;
+ }
+
/* check written byte count */
if (sl->core_id == STM32L_CORE_ID) {
projects / fw / stlink / blobdiff