#define WLOG(format, args...) ugly_log(UWARN, LOG_TAG, format, ## args)
#define fatal(format, args...) ugly_log(UFATAL, LOG_TAG, format, ## args)
-// Suspends execution of the calling process for
-// (at least) ms milliseconds.
-
-static void delay(int ms) {
- //fprintf(stderr, "*** wait %d ms\n", ms);
- usleep(1000 * ms);
-}
-
static void clear_cdb(struct stlink_libsg *sl) {
for (size_t i = 0; i < sizeof (sl->cdb_cmd_blk); i++)
sl->cdb_cmd_blk[i] = 0;
sl->q_data_dir = Q_DATA_IN;
}
-// close the device, free the allocated memory
-
-void _stlink_sg_close(stlink_t *sl) {
+/**
+ * Close and free any _backend_ related information...
+ * @param sl
+ */void _stlink_sg_close(stlink_t *sl) {
if (sl) {
-#if FINISHED_WITH_SG
struct stlink_libsg *slsg = sl->backend_data;
- scsi_pt_close_device(slsg->sg_fd);
+ libusb_close(slsg->usb_handle);
+ libusb_exit(slsg->libusb_ctx);
free(slsg);
-#endif
}
}
try++;
} while ((ret == LIBUSB_ERROR_PIPE) && (try < 3));
if (ret != LIBUSB_SUCCESS) {
- fprintf(stderr, "%s: receiving failed: %d\n", __func__, ret);
+ WLOG("%s: receiving failed: %d\n", __func__, ret);
return -1;
}
if (transferred != sizeof(csw)) {
- fprintf(stderr, "%s: received unexpected amount: %d\n", __func__, transferred);
+ WLOG("%s: received unexpected amount: %d\n", __func__, transferred);
return -1;
}
uint32_t rsig = read_uint32(csw, 0);
uint32_t rtag = read_uint32(csw, 4);
- uint32_t residue = read_uint32(csw, 8);
+ /* uint32_t residue = read_uint32(csw, 8); */
#define USB_CSW_SIGNATURE 0x53425355 // 'U' 'S' 'B' 'S' (reversed)
if (rsig != USB_CSW_SIGNATURE) {
WLOG("status signature was invalid: %#x\n", rsig);
return -1;
}
- DLOG("residue was= %#x\n", residue);
*tag = rtag;
uint8_t rstatus = csw[12];
- DLOG("rstatus = %x\n", rstatus);
return rstatus;
}
memcpy(&(c_buf[i]), cdb, cdb_length);
int sending_length = STLINK_SG_SIZE;
- DLOG("sending length set to: %d\n", sending_length);
// send....
do {
- DLOG("attempting tx...\n");
ret = libusb_bulk_transfer(handle, endpoint_out, c_buf, sending_length,
&real_transferred, SG_TIMEOUT_MSEC);
if (ret == LIBUSB_ERROR_PIPE) {
WLOG("sending failed: %d\n", ret);
return -1;
}
- DLOG("Actually sent: %d, returning tag: %d\n", real_transferred, tag);
return this_tag;
}
}
}
-
-//TODO rewrite/cleanup, save the error in sl
-
-#if FINISHED_WITH_SG
-static void stlink_confirm_inq(stlink_t *stl, struct sg_pt_base *ptvp) {
- struct stlink_libsg *sl = stl->backend_data;
- const int e = sl->do_scsi_pt_err;
- if (e < 0) {
- fprintf(stderr, "scsi_pt error: pass through os error: %s\n",
- safe_strerror(-e));
- return;
- } else if (e == SCSI_PT_DO_BAD_PARAMS) {
- fprintf(stderr, "scsi_pt error: bad pass through setup\n");
- return;
- } else if (e == SCSI_PT_DO_TIMEOUT) {
- fprintf(stderr, " pass through timeout\n");
- return;
- }
- const int duration = get_scsi_pt_duration_ms(ptvp);
- if ((stl->verbose > 1) && (duration >= 0))
- DLOG(" duration=%d ms\n", duration);
-
- // XXX stlink fw sends broken residue, so ignore it and use the known q_len
- // "usb-storage quirks=483:3744:r"
- // forces residue to be ignored and calculated, but this causes aboard if
- // data_len = 0 and by some other data_len values.
-
- const int resid = get_scsi_pt_resid(ptvp);
- const int dsize = stl->q_len - resid;
-
- const int cat = get_scsi_pt_result_category(ptvp);
- char buf[512];
- unsigned int slen;
-
- switch (cat) {
- case SCSI_PT_RESULT_GOOD:
- if (stl->verbose && (resid > 0))
- DLOG(" notice: requested %d bytes but "
- "got %d bytes, ignore [broken] residue = %d\n",
- stl->q_len, dsize, resid);
- break;
- case SCSI_PT_RESULT_STATUS:
- if (stl->verbose) {
- sg_get_scsi_status_str(
- get_scsi_pt_status_response(ptvp), sizeof (buf),
- buf);
- DLOG(" scsi status: %s\n", buf);
- }
- return;
- case SCSI_PT_RESULT_SENSE:
- slen = get_scsi_pt_sense_len(ptvp);
- if (stl->verbose) {
- sg_get_sense_str("", sl->sense_buf, slen, (stl->verbose
- > 1), sizeof (buf), buf);
- DLOG("%s", buf);
- }
- if (stl->verbose && (resid > 0)) {
- if ((stl->verbose) || (stl->q_len > 0))
- DLOG(" requested %d bytes but "
- "got %d bytes\n", stl->q_len, dsize);
- }
- return;
- case SCSI_PT_RESULT_TRANSPORT_ERR:
- if (stl->verbose) {
- get_scsi_pt_transport_err_str(ptvp, sizeof (buf), buf);
- // http://tldp.org/HOWTO/SCSI-Generic-HOWTO/x291.html
- // These codes potentially come from the firmware on a host adapter
- // or from one of several hosts that an adapter driver controls.
- // The 'host_status' field has the following values:
- // [0x07] Internal error detected in the host adapter.
- // This may not be fatal (and the command may have succeeded).
- DLOG(" transport: %s", buf);
- }
- return;
- case SCSI_PT_RESULT_OS_ERR:
- if (stl->verbose) {
- get_scsi_pt_os_err_str(ptvp, sizeof (buf), buf);
- DLOG(" os: %s", buf);
- }
- return;
- default:
- fprintf(stderr, " unknown pass through result "
- "category (%d)\n", cat);
- }
-}
-#endif
-
/**
* Just send a buffer on an endpoint, no questions asked.
* Handles repeats, and time outs. Also handles reading status reports and sense
unsigned char endpoint_in, unsigned char *cbuf, unsigned int length) {
int ret;
int real_transferred;
- int try;
+ int try = 0;
do {
- DLOG("attempting tx...\n");
ret = libusb_bulk_transfer(handle, endpoint_out, cbuf, length,
&real_transferred, SG_TIMEOUT_MSEC);
if (ret == LIBUSB_ERROR_PIPE) {
WLOG("sending failed: %d\n", ret);
return -1;
}
- DLOG("Actually sent: %d\n", real_transferred);
// now, swallow up the status, so that things behave nicely...
uint32_t received_tag;
int ret;
if (rx_length > 0) {
do {
- DLOG("attempting rx\n");
ret = libusb_bulk_transfer(sg->usb_handle, sg->ep_rep, sl->q_buf, rx_length,
&real_transferred, SG_TIMEOUT_MSEC);
if (ret == LIBUSB_ERROR_PIPE) {
return -1;
}
return 0;
-
-
- DLOG("Actually received: %d\n", real_transferred);
-
-#if FINISHED_WITH_SG
- // Get control command descriptor of scsi structure,
- // (one object per command!!)
- struct sg_pt_base *ptvp = construct_scsi_pt_obj();
- if (NULL == ptvp) {
- fprintf(stderr, "construct_scsi_pt_obj: out of memory\n");
- return;
- }
-
- set_scsi_pt_cdb(ptvp, sg->cdb_cmd_blk, sizeof (sg->cdb_cmd_blk));
-
- // set buffer for sense (error information) data
- set_scsi_pt_sense(ptvp, sg->sense_buf, sizeof (sg->sense_buf));
-
- // Set a buffer to be used for data transferred from device
- if (sg->q_data_dir == Q_DATA_IN) {
- //clear_buf(sl);
- set_scsi_pt_data_in(ptvp, sl->q_buf, sl->q_len);
- } else {
- set_scsi_pt_data_out(ptvp, sl->q_buf, sl->q_len);
- }
- // Executes SCSI command (or at least forwards it to lower layers).
- sg->do_scsi_pt_err = do_scsi_pt(ptvp, sg->sg_fd, SG_TIMEOUT_SEC,
- sl->verbose);
-
- // check for scsi errors
- stlink_confirm_inq(sl, ptvp);
- // TODO recycle: clear_scsi_pt_obj(struct sg_pt_base * objp);
- destruct_scsi_pt_obj(ptvp);
-#endif
}
// TODO thinking, cleanup
void _stlink_sg_version(stlink_t *stl) {
struct stlink_libsg *sl = stl->backend_data;
- DLOG("\n*** stlink_version ***\n");
clear_cdb(sl);
sl->cdb_cmd_blk[0] = STLINK_GET_VERSION;
stl->q_len = 6;
sl->q_addr = 0;
stlink_q(stl);
- // HACK use my own private version right now...
-
}
// Get stlink mode:
}
// XXX kernel driver performs reset, the device temporally disappears
-
+// Suspect this is no longer the case when we have ignore on? RECHECK
void _stlink_sg_exit_dfu_mode(stlink_t *sl) {
struct stlink_libsg *sg = sl->backend_data;
DLOG("\n*** stlink_exit_dfu_mode ***\n");
stlink_stat(sl, "core reset");
}
+// Arm-core reset -> halted state.
+
+void _stlink_sg_jtag_reset(stlink_t *sl, int value) {
+ struct stlink_libsg *sg = sl->backend_data;
+ clear_cdb(sg);
+ sg->cdb_cmd_blk[1] = STLINK_JTAG_DRIVE_NRST;
+ sg->cdb_cmd_blk[2] = (value)?0:1;
+ sl->q_len = 3;
+ sg->q_addr = 2;
+ stlink_q(sl);
+ stlink_stat(sl, "core reset");
+}
+
// Arm-core status: halted or running.
void _stlink_sg_status(stlink_t *sl) {
struct stlink_libsg *sg = sl->backend_data;
- DLOG("\n*** stlink_status ***\n");
clear_cdb(sg);
sg->cdb_cmd_blk[1] = STLINK_DEBUG_GETSTATUS;
sl->q_len = 2;
void _stlink_sg_force_debug(stlink_t *sl) {
struct stlink_libsg *sg = sl->backend_data;
- DLOG("\n*** stlink_force_debug ***\n");
clear_cdb(sg);
sg->cdb_cmd_blk[1] = STLINK_DEBUG_FORCEDEBUG;
sl->q_len = 2;
void _stlink_sg_run(stlink_t *sl) {
struct stlink_libsg *sg = sl->backend_data;
- DLOG("\n*** stlink_run ***\n");
clear_cdb(sg);
sg->cdb_cmd_blk[1] = STLINK_DEBUG_RUNCORE;
sl->q_len = 2;
stlink_print_data(sl);
}
-#if 0 /* not working */
-
-static int write_flash_mem16
-(struct stlink* sl, uint32_t addr, uint16_t val) {
- /* half word writes */
- if (addr % 2) return -1;
+// Write one DWORD data to memory
- /* unlock if locked */
- unlock_flash_if(sl);
-
- /* set flash programming chosen bit */
- set_flash_cr_pg(sl);
-
- write_uint16(sl->q_buf, val);
- stlink_write_mem16(sl, addr, 2);
+void _stlink_sg_write_debug32(stlink_t *sl, uint32_t addr, uint32_t data) {
+ struct stlink_libsg *sg = sl->backend_data;
+ clear_cdb(sg);
+ sg->cdb_cmd_blk[1] = STLINK_JTAG_WRITEDEBUG_32BIT;
+ // 2-5: addr
+ write_uint32(sg->cdb_cmd_blk + 2, addr);
+ write_uint32(sg->cdb_cmd_blk + 6, data);
+ sl->q_len = 2;
+ stlink_q(sl);
- /* wait for non business */
- wait_flash_busy(sl);
+}
- lock_flash(sl);
+// Read one DWORD data from memory
- /* check the programmed value back */
- stlink_read_mem16(sl, addr, 2);
- if (*(const uint16_t*) sl->q_buf != val) {
- /* values differ at i * sizeof(uint16_t) */
- return -1;
- }
+uint32_t _stlink_sg_read_debug32(stlink_t *sl, uint32_t addr) {
+ struct stlink_libsg *sg = sl->backend_data;
+ clear_cdb(sg);
+ sg->cdb_cmd_blk[1] = STLINK_JTAG_READDEBUG_32BIT;
+ // 2-5: addr
+ write_uint32(sg->cdb_cmd_blk + 2, addr);
+ sl->q_len = 8;
+ stlink_q(sl);
- /* success */
- return 0;
+ return read_uint32(sl->q_buf, 4);
}
-#endif /* not working */
// Exit the jtag or swd mode and enter the mass mode.
_stlink_sg_exit_dfu_mode,
_stlink_sg_core_id,
_stlink_sg_reset,
+ _stlink_sg_jtag_reset,
_stlink_sg_run,
_stlink_sg_status,
_stlink_sg_version,
+ _stlink_sg_read_debug32,
_stlink_sg_read_mem32,
+ _stlink_sg_write_debug32,
_stlink_sg_write_mem32,
_stlink_sg_write_mem8,
_stlink_sg_read_all_regs,
if (slsg->usb_handle == NULL) {
WLOG("Failed to find an stlink v1 by VID:PID\n");
libusb_close(slsg->usb_handle);
+ libusb_exit(slsg->libusb_ctx);
free(sl);
free(slsg);
return NULL;
if (r < 0) {
WLOG("libusb_detach_kernel_driver(() error %s\n", strerror(-r));
libusb_close(slsg->usb_handle);
+ libusb_exit(slsg->libusb_ctx);
free(sl);
free(slsg);
return NULL;
/* this may fail for a previous configured device */
WLOG("libusb_get_configuration()\n");
libusb_close(slsg->usb_handle);
+ libusb_exit(slsg->libusb_ctx);
free(sl);
free(slsg);
return NULL;
/* this may fail for a previous configured device */
WLOG("libusb_set_configuration() failed\n");
libusb_close(slsg->usb_handle);
+ libusb_exit(slsg->libusb_ctx);
free(sl);
free(slsg);
return NULL;
if (libusb_claim_interface(slsg->usb_handle, 0)) {
WLOG("libusb_claim_interface() failed\n");
libusb_close(slsg->usb_handle);
+ libusb_exit(slsg->libusb_ctx);
free(sl);
free(slsg);
return NULL;
sl->core_stat = STLINK_CORE_STAT_UNKNOWN;
slsg->q_addr = 0;
- /* flash memory settings */
- sl->flash_base = STM32_FLASH_BASE;
- sl->flash_size = STM32_FLASH_SIZE;
- sl->flash_pgsz = STM32_FLASH_PGSZ;
-
- /* system memory */
- sl->sys_base = STM32_SYSTEM_BASE;
- sl->sys_size = STM32_SYSTEM_SIZE;
-
- /* sram memory settings */
- sl->sram_base = STM32_SRAM_BASE;
- sl->sram_size = STM32_SRAM_SIZE;
-
return sl;
}
-
-stlink_t* stlink_v1_open(const int verbose) {
+stlink_t* stlink_v1_open_inner(const int verbose) {
ugly_init(verbose);
stlink_t *sl = stlink_open(verbose);
if (sl == NULL) {
}
stlink_version(sl);
-
if ((sl->version.st_vid != USB_ST_VID) || (sl->version.stlink_pid != USB_STLINK_PID)) {
ugly_log(UERROR, LOG_TAG,
"WTF? successfully opened, but unable to read version details. BROKEN!\n");
DLOG("Reading current mode...\n");
switch (stlink_current_mode(sl)) {
- case STLINK_DEV_MASS_MODE:
- return sl;
- case STLINK_DEV_DEBUG_MODE:
- // TODO go to mass?
+ case STLINK_DEV_MASS_MODE:
return sl;
+ case STLINK_DEV_DEBUG_MODE:
+ // TODO go to mass?
+ return sl;
+ default:
+ ILOG("Current mode unusable, trying to get back to a useful state...\n");
+ break;
}
DLOG("Attempting to exit DFU mode\n");
_stlink_sg_exit_dfu_mode(sl);
- // exit the dfu mode -> the device is gone
- DLOG("\n*** reopen the stlink device ***\n");
- delay(1000);
- stlink_close(sl);
- delay(5000);
-
- DLOG("Attempting to reopen the stlink...\n");
- sl = stlink_open(verbose);
+ // re-query device info (and retest)
+ stlink_version(sl);
+ if ((sl->version.st_vid != USB_ST_VID) || (sl->version.stlink_pid != USB_STLINK_PID)) {
+ ugly_log(UERROR, LOG_TAG,
+ "WTF? successfully opened, but unable to read version details. BROKEN!\n");
+ return NULL;
+ }
+ return sl;
+}
+
+stlink_t* stlink_v1_open(const int verbose) {
+ stlink_t *sl = stlink_v1_open_inner(verbose);
if (sl == NULL) {
fputs("Error: could not open stlink device\n", stderr);
return NULL;
}
- // re-query device info
- stlink_version(sl);
+ // by now, it _must_ be fully open and in a useful mode....
+ stlink_enter_swd_mode(sl);
+ ILOG("Successfully opened a stlink v1 debugger\n");
return sl;
}
projects / fw / stlink / blobdiff