-#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
-#include <time.h>
+#include <sys/time.h>
#include <sys/types.h>
-#include <libusb-1.0/libusb.h>
+#include <libusb.h>
+#include <errno.h>
+#include <unistd.h>
+
#include "stlink-common.h"
#include "stlink-usb.h"
+#include "uglylogging.h"
+
+enum SCSI_Generic_Direction {SG_DXFER_TO_DEV=0, SG_DXFER_FROM_DEV=0x80};
void _stlink_usb_close(stlink_t* sl) {
struct stlink_libusb * const handle = sl->backend_data;
// maybe we couldn't even get the usb device?
if (handle != NULL) {
- if (handle->req_trans != NULL)
- libusb_free_transfer(handle->req_trans);
-
- if (handle->rep_trans != NULL)
- libusb_free_transfer(handle->rep_trans);
-
- if (handle->usb_handle != NULL)
+ if (handle->usb_handle != NULL) {
libusb_close(handle->usb_handle);
+ }
libusb_exit(handle->libusb_ctx);
free(handle);
}
}
+ssize_t send_recv(struct stlink_libusb* handle, int terminate,
+ unsigned char* txbuf, size_t txsize,
+ unsigned char* rxbuf, size_t rxsize) {
+ /* note: txbuf and rxbuf can point to the same area */
+ int res = 0;
-struct trans_ctx {
-#define TRANS_FLAGS_IS_DONE (1 << 0)
-#define TRANS_FLAGS_HAS_ERROR (1 << 1)
- volatile unsigned long flags;
-};
-
-static void on_trans_done(struct libusb_transfer * trans) {
- struct trans_ctx * const ctx = trans->user_data;
-
- if (trans->status != LIBUSB_TRANSFER_COMPLETED)
- ctx->flags |= TRANS_FLAGS_HAS_ERROR;
-
- ctx->flags |= TRANS_FLAGS_IS_DONE;
-}
-
-int submit_wait(struct stlink_libusb *slu, struct libusb_transfer * trans) {
- struct timeval start;
- struct timeval now;
- struct timeval diff;
- struct trans_ctx trans_ctx;
- enum libusb_error error;
-
- trans_ctx.flags = 0;
-
- /* brief intrusion inside the libusb interface */
- trans->callback = on_trans_done;
- trans->user_data = &trans_ctx;
-
- if ((error = libusb_submit_transfer(trans))) {
- printf("libusb_submit_transfer(%d)\n", error);
+ if (libusb_bulk_transfer(handle->usb_handle, handle->ep_req,
+ txbuf,
+ txsize,
+ &res,
+ 3000))
return -1;
- }
-
- gettimeofday(&start, NULL);
- while (trans_ctx.flags == 0) {
- struct timeval timeout;
- timeout.tv_sec = 3;
- timeout.tv_usec = 0;
- if (libusb_handle_events_timeout(slu->libusb_ctx, &timeout)) {
- printf("libusb_handle_events()\n");
+ if (rxsize != 0) {
+ if (libusb_bulk_transfer(handle->usb_handle, handle->ep_rep,
+ rxbuf,
+ rxsize,
+ &res,
+ 3000))
return -1;
- }
-
- gettimeofday(&now, NULL);
- timersub(&now, &start, &diff);
- if (diff.tv_sec >= 3) {
- printf("libusb_handle_events() timeout\n");
- return -1;
- }
}
- if (trans_ctx.flags & TRANS_FLAGS_HAS_ERROR) {
- printf("libusb_handle_events() | has_error\n");
- return -1;
+ if ((handle->protocoll == 1) && terminate) {
+ /* Read the SG reply */
+ unsigned char sg_buf[13];
+ if (libusb_bulk_transfer(handle->usb_handle, handle->ep_rep,
+ sg_buf,
+ 13,
+ &res,
+ 3000))
+ return -1;
+ /* The STLink doesn't seem to evaluate the sequence number */
+ handle->sg_transfer_idx++;
}
- return 0;
-}
-
-ssize_t send_recv(struct stlink_libusb* handle,
- unsigned char* txbuf, size_t txsize,
- unsigned char* rxbuf, size_t rxsize) {
- /* note: txbuf and rxbuf can point to the same area */
-
- libusb_fill_bulk_transfer(handle->req_trans, handle->usb_handle,
- handle->ep_req,
- txbuf, txsize,
- NULL, NULL,
- 0
- );
-
- printf("submit_wait(req)\n");
-
- if (submit_wait(handle, handle->req_trans)) return -1;
-
- /* send_only */
- if (rxsize == 0) return 0;
-
- /* read the response */
-
- libusb_fill_bulk_transfer(handle->rep_trans, handle->usb_handle,
- handle->ep_rep, rxbuf, rxsize, NULL, NULL, 0);
-
- printf("submit_wait(rep)\n");
-
- if (submit_wait(handle, handle->rep_trans)) return -1;
-
- return handle->rep_trans->actual_length;
+ return res;
}
static inline int send_only
-(struct stlink_libusb* handle, unsigned char* txbuf, size_t txsize) {
- return send_recv(handle, txbuf, txsize, NULL, 0);
+(struct stlink_libusb* handle, int terminate,
+ unsigned char* txbuf, size_t txsize) {
+ return send_recv(handle, terminate, txbuf, txsize, NULL, 0);
}
-// KARL - fixme, common code! (or, one per backend)
-// candidate for common code...
+static int fill_command
+(stlink_t * sl, enum SCSI_Generic_Direction dir, uint32_t len) {
+ struct stlink_libusb * const slu = sl->backend_data;
+ unsigned char* const cmd = sl->c_buf;
+ int i = 0;
+ memset(cmd, 0, sizeof (sl->c_buf));
+ if(slu->protocoll == 1) {
+ cmd[i++] = 'U';
+ cmd[i++] = 'S';
+ cmd[i++] = 'B';
+ cmd[i++] = 'C';
+ write_uint32(&cmd[i], slu->sg_transfer_idx);
+ write_uint32(&cmd[i + 4], len);
+ i += 8;
+ cmd[i++] = (dir == SG_DXFER_FROM_DEV)?0x80:0;
+ cmd[i++] = 0; /* Logical unit */
+ cmd[i++] = 0xa; /* Command length */
+ }
+ return i;
+}
+void _stlink_usb_version(stlink_t *sl) {
+ struct stlink_libusb * const slu = sl->backend_data;
+ unsigned char* const data = sl->q_buf;
+ unsigned char* const cmd = sl->c_buf;
+ ssize_t size;
+ uint32_t rep_len = 6;
+ int i = fill_command(sl, SG_DXFER_FROM_DEV, rep_len);
-static int is_stlink_device(libusb_device * dev) {
- struct libusb_device_descriptor desc;
+ cmd[i++] = STLINK_GET_VERSION;
- if (libusb_get_device_descriptor(dev, &desc))
- return 0;
+ size = send_recv(slu, 1, cmd, slu->cmd_len, data, rep_len);
+ if (size == -1) {
+ printf("[!] send_recv\n");
+ return;
+ }
+}
+
+int32_t _stlink_usb_target_voltage(stlink_t *sl) {
+ struct stlink_libusb * const slu = sl->backend_data;
+ unsigned char* const rdata = sl->q_buf;
+ unsigned char* const cmd = sl->c_buf;
+ ssize_t size;
+ uint32_t rep_len = 8;
+ int i = fill_command(sl, SG_DXFER_FROM_DEV, rep_len);
+ uint32_t factor, reading;
+ int voltage;
- printf("device: 0x%04x, 0x%04x\n", desc.idVendor, desc.idProduct);
+ cmd[i++] = STLINK_GET_TARGET_VOLTAGE;
- if (desc.idVendor != USB_ST_VID)
- return 0;
+ size = send_recv(slu, 1, cmd, slu->cmd_len, rdata, rep_len);
+ if (size == -1) {
+ printf("[!] send_recv\n");
+ return -1;
+ } else if (size != 8) {
+ printf("[!] wrong length\n");
+ return -1;
+ }
- if (desc.idProduct != USB_STLINK_32L_PID)
- return 0;
+ factor = (rdata[3] << 24) | (rdata[2] << 16) | (rdata[1] << 8) | (rdata[0] << 0);
+ reading = (rdata[7] << 24) | (rdata[6] << 16) | (rdata[5] << 8) | (rdata[4] << 0);
+ voltage = 2400 * reading / factor;
- return 1;
+ return voltage;
}
-void _stlink_usb_version(stlink_t *sl) {
+void _stlink_usb_read_debug32(stlink_t *sl, uint32_t addr, uint32_t *data) {
struct stlink_libusb * const slu = sl->backend_data;
- unsigned char* const buf = sl->q_buf;
+ unsigned char* const rdata = sl->q_buf;
+ unsigned char* const cmd = sl->c_buf;
ssize_t size;
+ const int rep_len = 8;
- memset(buf, 0, sizeof (sl->q_buf));
- buf[0] = STLINK_GET_VERSION;
- buf[1] = 0x80;
-
- size = send_recv(slu, buf, STLINK_CMD_SIZE, buf, sizeof (sl->q_buf));
+ int i = fill_command(sl, SG_DXFER_FROM_DEV, rep_len);
+ cmd[i++] = STLINK_DEBUG_COMMAND;
+ cmd[i++] = STLINK_JTAG_READDEBUG_32BIT;
+ write_uint32(&cmd[i], addr);
+ size = send_recv(slu, 1, cmd, slu->cmd_len, rdata, rep_len);
if (size == -1) {
printf("[!] send_recv\n");
return;
}
+ *data = read_uint32(rdata, 4);
+ return;
+}
-#if 1 /* DEBUG */
- {
- ssize_t i;
- for (i = 0; i < size; ++i) printf("%02x", buf[i]);
- printf("\n");
+void _stlink_usb_write_debug32(stlink_t *sl, uint32_t addr, uint32_t data) {
+ struct stlink_libusb * const slu = sl->backend_data;
+ unsigned char* const rdata = sl->q_buf;
+ unsigned char* const cmd = sl->c_buf;
+ ssize_t size;
+ const int rep_len = 2;
+
+ int i = fill_command(sl, SG_DXFER_FROM_DEV, rep_len);
+ cmd[i++] = STLINK_DEBUG_COMMAND;
+ cmd[i++] = STLINK_JTAG_WRITEDEBUG_32BIT;
+ write_uint32(&cmd[i], addr);
+ write_uint32(&cmd[i + 4], data);
+ size = send_recv(slu, 1, cmd, slu->cmd_len, rdata, rep_len);
+ if (size == -1) {
+ printf("[!] send_recv\n");
+ return;
}
-#endif /* DEBUG */
}
void _stlink_usb_write_mem32(stlink_t *sl, uint32_t addr, uint16_t len) {
struct stlink_libusb * const slu = sl->backend_data;
- unsigned char* const buf = sl->q_buf;
- unsigned char *cmd_buf = sl->c_buf;
-
- memset(cmd_buf, 0, STLINK_CMD_SIZE);
- cmd_buf[0] = STLINK_DEBUG_COMMAND;
- cmd_buf[1] = STLINK_DEBUG_WRITEMEM_32BIT;
- write_uint32(cmd_buf + 2, addr);
- write_uint16(cmd_buf + 6, len);
- send_only(slu, cmd_buf, STLINK_CMD_SIZE);
+ unsigned char* const data = sl->q_buf;
+ unsigned char* const cmd = sl->c_buf;
- assert((len & 3) == 0);
- stlink_print_data(sl);
- send_only(slu, buf, len);
+ int i = fill_command(sl, SG_DXFER_TO_DEV, len);
+ cmd[i++] = STLINK_DEBUG_COMMAND;
+ cmd[i++] = STLINK_DEBUG_WRITEMEM_32BIT;
+ write_uint32(&cmd[i], addr);
+ write_uint16(&cmd[i + 4], len);
+ send_only(slu, 0, cmd, slu->cmd_len);
+ send_only(slu, 1, data, len);
}
void _stlink_usb_write_mem8(stlink_t *sl, uint32_t addr, uint16_t len) {
struct stlink_libusb * const slu = sl->backend_data;
- unsigned char* const buf = sl->q_buf;
- unsigned char *cmd_buf = sl->c_buf;
-
- memset(cmd_buf, 0, STLINK_CMD_SIZE);
- cmd_buf[0] = STLINK_DEBUG_COMMAND;
- cmd_buf[1] = STLINK_DEBUG_WRITEMEM_8BIT;
- write_uint32(cmd_buf + 2, addr);
- write_uint16(cmd_buf + 6, len);
- send_only(slu, cmd_buf, STLINK_CMD_SIZE);
-
- stlink_print_data(sl);
- send_only(slu, buf, len);
+ unsigned char* const data = sl->q_buf;
+ unsigned char* const cmd = sl->c_buf;
+
+ int i = fill_command(sl, SG_DXFER_TO_DEV, 0);
+ cmd[i++] = STLINK_DEBUG_COMMAND;
+ cmd[i++] = STLINK_DEBUG_WRITEMEM_8BIT;
+ write_uint32(&cmd[i], addr);
+ write_uint16(&cmd[i + 4], len);
+ send_only(slu, 0, cmd, slu->cmd_len);
+ send_only(slu, 1, data, len);
}
int _stlink_usb_current_mode(stlink_t * sl) {
struct stlink_libusb * const slu = sl->backend_data;
- unsigned char* const buf = sl->q_buf;
+ unsigned char* const cmd = sl->c_buf;
+ unsigned char* const data = sl->q_buf;
ssize_t size;
- memset(buf, 0, sizeof (sl->q_buf));
- buf[0] = STLINK_GET_CURRENT_MODE;
- size = send_recv(slu, buf, STLINK_CMD_SIZE, buf, sizeof (sl->q_buf));
+ int rep_len = 2;
+ int i = fill_command(sl, SG_DXFER_FROM_DEV, rep_len);
+
+ cmd[i++] = STLINK_GET_CURRENT_MODE;
+ size = send_recv(slu, 1, cmd, slu->cmd_len, data, rep_len);
if (size == -1) {
printf("[!] send_recv\n");
return -1;
void _stlink_usb_core_id(stlink_t * sl) {
struct stlink_libusb * const slu = sl->backend_data;
- unsigned char* const buf = sl->q_buf;
+ unsigned char* const cmd = sl->c_buf;
+ unsigned char* const data = sl->q_buf;
ssize_t size;
+ int rep_len = 4;
+ int i = fill_command(sl, SG_DXFER_FROM_DEV, rep_len);
- memset(buf, 0, sizeof (sl->q_buf));
- buf[0] = STLINK_DEBUG_COMMAND;
- buf[1] = STLINK_DEBUG_READCOREID;
+ cmd[i++] = STLINK_DEBUG_COMMAND;
+ cmd[i++] = STLINK_DEBUG_READCOREID;
- size = send_recv(slu, buf, STLINK_CMD_SIZE, buf, sizeof (sl->q_buf));
+ size = send_recv(slu, 1, cmd, slu->cmd_len, data, rep_len);
if (size == -1) {
printf("[!] send_recv\n");
return;
}
- sl->core_id = read_uint32(buf, 0);
+ sl->core_id = read_uint32(data, 0);
}
void _stlink_usb_status(stlink_t * sl) {
struct stlink_libusb * const slu = sl->backend_data;
- unsigned char* const buf = sl->q_buf;
+ unsigned char* const data = sl->q_buf;
+ unsigned char* const cmd = sl->c_buf;
ssize_t size;
+ int rep_len = 2;
+ int i = fill_command(sl, SG_DXFER_FROM_DEV, rep_len);
- memset(buf, 0, sizeof (sl->q_buf));
-
- buf[0] = STLINK_DEBUG_COMMAND;
- buf[1] = STLINK_DEBUG_GETSTATUS;
+ cmd[i++] = STLINK_DEBUG_COMMAND;
+ cmd[i++] = STLINK_DEBUG_GETSTATUS;
- size = send_recv(slu, buf, STLINK_CMD_SIZE, buf, sizeof (sl->q_buf));
+ size = send_recv(slu, 1, cmd, slu->cmd_len, data, rep_len);
if (size == -1) {
printf("[!] send_recv\n");
return;
}
-
- /* todo: stlink_core_stat */
-
- // FIXME - decode into sl->core_stat
-#if 1 /* DEBUG */
- printf("status == 0x%x\n", buf[0]);
-#endif /* DEBUG */
-
+ sl->q_len = (size_t) size;
}
void _stlink_usb_force_debug(stlink_t *sl) {
struct stlink_libusb *slu = sl->backend_data;
- unsigned char* const buf = sl->q_buf;
+ unsigned char* const data = sl->q_buf;
+ unsigned char* const cmd = sl->c_buf;
ssize_t size;
+ int rep_len = 2;
+ int i = fill_command(sl, SG_DXFER_FROM_DEV, rep_len);
- memset(buf, 0, sizeof (sl->q_buf));
-
- buf[0] = STLINK_DEBUG_COMMAND;
- buf[1] = STLINK_DEBUG_FORCEDEBUG;
- size = send_recv(slu, buf, STLINK_CMD_SIZE, buf, sizeof (sl->q_buf));
+ cmd[i++] = STLINK_DEBUG_COMMAND;
+ cmd[i++] = STLINK_DEBUG_FORCEDEBUG;
+ size = send_recv(slu, 1, cmd, slu->cmd_len, data, rep_len);
if (size == -1) {
printf("[!] send_recv\n");
return;
}
}
-
void _stlink_usb_enter_swd_mode(stlink_t * sl) {
struct stlink_libusb * const slu = sl->backend_data;
- unsigned char* const buf = sl->q_buf;
+ unsigned char* const cmd = sl->c_buf;
ssize_t size;
+ const int rep_len = 0;
+ int i = fill_command(sl, SG_DXFER_FROM_DEV, rep_len);
- memset(buf, 0, sizeof (sl->q_buf));
+ cmd[i++] = STLINK_DEBUG_COMMAND;
+ cmd[i++] = STLINK_DEBUG_ENTER;
+ cmd[i++] = STLINK_DEBUG_ENTER_SWD;
- buf[0] = STLINK_DEBUG_COMMAND;
- buf[1] = STLINK_SWD_ENTER;
- buf[2] = STLINK_DEBUG_ENTER_SWD;
-
- size = send_recv(slu, buf, STLINK_CMD_SIZE, buf, sizeof (sl->q_buf));
+ size = send_only(slu, 1, cmd, slu->cmd_len);
if (size == -1) {
printf("[!] send_recv\n");
return;
void _stlink_usb_exit_dfu_mode(stlink_t* sl) {
struct stlink_libusb * const slu = sl->backend_data;
- unsigned char* const buf = sl->q_buf;
+ unsigned char* const cmd = sl->c_buf;
ssize_t size;
+ int i = fill_command(sl, SG_DXFER_FROM_DEV, 0);
- memset(buf, 0, sizeof (sl->q_buf));
- buf[0] = STLINK_DFU_COMMAND;
- buf[1] = STLINK_DFU_EXIT;
+ cmd[i++] = STLINK_DFU_COMMAND;
+ cmd[i++] = STLINK_DFU_EXIT;
- size = send_only(slu, buf, 16);
+ size = send_only(slu, 1, cmd, slu->cmd_len);
if (size == -1) {
printf("[!] send_recv\n");
return;
*/
void _stlink_usb_reset(stlink_t * sl) {
struct stlink_libusb * const slu = sl->backend_data;
- unsigned char* const buf = sl->q_buf;
+ unsigned char* const data = sl->q_buf;
+ unsigned char* const cmd = sl->c_buf;
+ ssize_t size;
+ int rep_len = 2;
+ int i = fill_command(sl, SG_DXFER_FROM_DEV, rep_len);
+
+ cmd[i++] = STLINK_DEBUG_COMMAND;
+ cmd[i++] = STLINK_DEBUG_RESETSYS;
+
+ size = send_recv(slu, 1, cmd, slu->cmd_len, data, rep_len);
+ if (size == -1) {
+ printf("[!] send_recv\n");
+ return;
+ }
+}
+
+
+void _stlink_usb_jtag_reset(stlink_t * sl, int value) {
+ struct stlink_libusb * const slu = sl->backend_data;
+ unsigned char* const data = sl->q_buf;
+ unsigned char* const cmd = sl->c_buf;
ssize_t size;
+ int rep_len = 2;
+ int i = fill_command(sl, SG_DXFER_FROM_DEV, rep_len);
- memset(buf, 0, sizeof (sl->q_buf));
- buf[0] = STLINK_DEBUG_COMMAND;
- buf[1] = STLINK_DEBUG_RESETSYS;
+ cmd[i++] = STLINK_DEBUG_COMMAND;
+ cmd[i++] = STLINK_JTAG_DRIVE_NRST;
+ cmd[i++] = value;
- size = send_recv(slu, buf, STLINK_CMD_SIZE, buf, sizeof (sl->q_buf));
+ size = send_recv(slu, 1, cmd, slu->cmd_len, data, rep_len);
if (size == -1) {
printf("[!] send_recv\n");
return;
void _stlink_usb_step(stlink_t* sl) {
struct stlink_libusb * const slu = sl->backend_data;
- unsigned char* const buf = sl->q_buf;
+ unsigned char* const data = sl->q_buf;
+ unsigned char* const cmd = sl->c_buf;
ssize_t size;
+ int rep_len = 2;
+ int i = fill_command(sl, SG_DXFER_FROM_DEV, rep_len);
- memset(buf, 0, sizeof (sl->q_buf));
- buf[0] = STLINK_DEBUG_COMMAND;
- buf[1] = STLINK_DEBUG_STEPCORE;
+ cmd[i++] = STLINK_DEBUG_COMMAND;
+ cmd[i++] = STLINK_DEBUG_STEPCORE;
- size = send_recv(slu, buf, STLINK_CMD_SIZE, buf, sizeof (sl->q_buf));
+ size = send_recv(slu, 1, cmd, slu->cmd_len, data, rep_len);
if (size == -1) {
printf("[!] send_recv\n");
return;
*/
void _stlink_usb_run(stlink_t* sl) {
struct stlink_libusb * const slu = sl->backend_data;
- unsigned char* const buf = sl->q_buf;
+ unsigned char* const data = sl->q_buf;
+ unsigned char* const cmd = sl->c_buf;
ssize_t size;
+ int rep_len = 2;
+ int i = fill_command(sl, SG_DXFER_FROM_DEV, rep_len);
- memset(buf, 0, sizeof (sl->q_buf));
- buf[0] = STLINK_DEBUG_COMMAND;
- buf[1] = STLINK_DEBUG_RUNCORE;
+ cmd[i++] = STLINK_DEBUG_COMMAND;
+ cmd[i++] = STLINK_DEBUG_RUNCORE;
- size = send_recv(slu, buf, STLINK_CMD_SIZE, buf, sizeof (sl->q_buf));
+ size = send_recv(slu, 1, cmd, slu->cmd_len, data, rep_len);
if (size == -1) {
printf("[!] send_recv\n");
return;
}
-
}
void _stlink_usb_exit_debug_mode(stlink_t *sl) {
struct stlink_libusb * const slu = sl->backend_data;
- unsigned char* const buf = sl->q_buf;
+ unsigned char* const cmd = sl->c_buf;
ssize_t size;
+ int i = fill_command(sl, SG_DXFER_FROM_DEV, 0);
- memset(buf, 0, sizeof (sl->q_buf));
- buf[0] = STLINK_DEBUG_COMMAND;
- buf[1] = STLINK_DEBUG_EXIT;
+ cmd[i++] = STLINK_DEBUG_COMMAND;
+ cmd[i++] = STLINK_DEBUG_EXIT;
- size = send_only(slu, buf, 16);
+ size = send_only(slu, 1, cmd, slu->cmd_len);
if (size == -1) {
printf("[!] send_only\n");
return;
void _stlink_usb_read_mem32(stlink_t *sl, uint32_t addr, uint16_t len) {
struct stlink_libusb * const slu = sl->backend_data;
- unsigned char* const buf = sl->q_buf;
+ unsigned char* const data = sl->q_buf;
+ unsigned char* const cmd = sl->c_buf;
ssize_t size;
+ int i = fill_command(sl, SG_DXFER_FROM_DEV, len);
- /* assume len < sizeof(sl->q_buf) */
-
- memset(buf, 0, sizeof (sl->q_buf));
- buf[0] = STLINK_DEBUG_COMMAND;
- buf[1] = STLINK_DEBUG_READMEM_32BIT;
- write_uint32(buf + 2, addr);
- buf[6] = (uint8_t) len;
- buf[7] = (uint8_t) (len >> 8);
+ cmd[i++] = STLINK_DEBUG_COMMAND;
+ cmd[i++] = STLINK_DEBUG_READMEM_32BIT;
+ write_uint32(&cmd[i], addr);
+ write_uint16(&cmd[i + 4], len);
- size = send_recv(slu, buf, STLINK_CMD_SIZE, buf, sizeof (sl->q_buf));
+ size = send_recv(slu, 1, cmd, slu->cmd_len, data, len);
if (size == -1) {
printf("[!] send_recv\n");
return;
stlink_print_data(sl);
}
-
-#if 1 /* stlinkv1 */
-
void _stlink_usb_read_all_regs(stlink_t *sl, reg *regp) {
struct stlink_libusb * const slu = sl->backend_data;
- unsigned char* const buf = sl->q_buf;
- unsigned char* const cmd_buf = sl->c_buf;
+ unsigned char* const cmd = sl->c_buf;
+ unsigned char* const data = sl->q_buf;
ssize_t size;
- int i;
+ uint32_t rep_len = 84;
+ int i = fill_command(sl, SG_DXFER_FROM_DEV, rep_len);
- memset(cmd_buf, 0, STLINK_CMD_SIZE);
- cmd_buf[0] = STLINK_DEBUG_COMMAND;
- cmd_buf[1] = STLINK_DEBUG_READALLREGS;
- size = send_recv(slu, cmd_buf, STLINK_CMD_SIZE, buf, 84);
+ cmd[i++] = STLINK_DEBUG_COMMAND;
+ cmd[i++] = STLINK_DEBUG_READALLREGS;
+ size = send_recv(slu, 1, cmd, slu->cmd_len, data, rep_len);
if (size == -1) {
printf("[!] send_recv\n");
return;
if (sl->verbose < 2)
return;
- DD(sl, "xpsr = 0x%08x\n", read_uint32(sl->q_buf, 64));
- DD(sl, "main_sp = 0x%08x\n", read_uint32(sl->q_buf, 68));
- DD(sl, "process_sp = 0x%08x\n", read_uint32(sl->q_buf, 72));
- DD(sl, "rw = 0x%08x\n", read_uint32(sl->q_buf, 76));
- DD(sl, "rw2 = 0x%08x\n", read_uint32(sl->q_buf, 80));
+ DLOG("xpsr = 0x%08x\n", read_uint32(sl->q_buf, 64));
+ DLOG("main_sp = 0x%08x\n", read_uint32(sl->q_buf, 68));
+ DLOG("process_sp = 0x%08x\n", read_uint32(sl->q_buf, 72));
+ DLOG("rw = 0x%08x\n", read_uint32(sl->q_buf, 76));
+ DLOG("rw2 = 0x%08x\n", read_uint32(sl->q_buf, 80));
}
-#else /* stlinkv2 */
-
-static void _stlink_usb_read_all_regs(stlink_t *sl, reg *regp) {
- struct stlink_libusb * const slu = sl->backend_data;
- unsigned char* const buf = sl->q_buf;
- unsigned char* const cmd_buf = sl->c_buf;
- ssize_t size;
- int i;
-
-#define STLINK_JTAG_COMMAND 0xf2
-#define STLINK_JTAG_READALLREGS2 0x3a
- memset(cmd_buf, 0, STLINK_CMD_SIZE);
- cmd_buf[0] = STLINK_JTAG_COMMAND;
- cmd_buf[1] = STLINK_JTAG_READALLREGS2;
- size = send_recv(slu, cmd_buf, STLINK_CMD_SIZE, buf, 84);
-
- if (size == -1) {
- printf("[!] send_recv\n");
- return;
- }
-
- sl->q_len = (size_t) size;
-
- for(i=0; i<16; i++)
- regp->r[i]= read_uint32(sl->q_buf, i*4);
-
- regp->xpsr = read_uint32(sl->q_buf, 64);
- regp->main_sp = read_uint32(sl->q_buf, 68);
- regp->process_sp = read_uint32(sl->q_buf, 72);
- regp->rw = read_uint32(sl->q_buf, 76);
- regp->rw2 = read_uint32(sl->q_buf, 80);
-}
-
-#endif /* stlinkv1 */
-
void _stlink_usb_read_reg(stlink_t *sl, int r_idx, reg *regp) {
struct stlink_libusb * const slu = sl->backend_data;
- unsigned char* const buf = sl->q_buf;
- unsigned char* const cmd_buf = sl->c_buf;
+ unsigned char* const data = sl->q_buf;
+ unsigned char* const cmd = sl->c_buf;
ssize_t size;
uint32_t r;
+ uint32_t rep_len = 4;
+ int i = fill_command(sl, SG_DXFER_FROM_DEV, rep_len);
- memset(cmd_buf, 0, STLINK_CMD_SIZE);
- cmd_buf[0] = STLINK_DEBUG_COMMAND;
- cmd_buf[1] = STLINK_DEBUG_READREG;
- cmd_buf[2] = (uint8_t) r_idx;
- size = send_recv(slu, cmd_buf, STLINK_CMD_SIZE, buf, 4);
+ cmd[i++] = STLINK_DEBUG_COMMAND;
+ cmd[i++] = STLINK_DEBUG_READREG;
+ cmd[i++] = (uint8_t) r_idx;
+ size = send_recv(slu, 1, cmd, slu->cmd_len, data, rep_len);
if (size == -1) {
printf("[!] send_recv\n");
return;
sl->q_len = (size_t) size;
stlink_print_data(sl);
r = read_uint32(sl->q_buf, 0);
- DD(sl, "r_idx (%2d) = 0x%08x\n", r_idx, r);
-
+ DLOG("r_idx (%2d) = 0x%08x\n", r_idx, r);
+
switch (r_idx) {
case 16:
regp->xpsr = r;
regp->process_sp = r;
break;
case 19:
- regp->rw = r; //XXX ?(primask, basemask etc.)
+ regp->rw = r; /* XXX ?(primask, basemask etc.) */
break;
case 20:
- regp->rw2 = r; //XXX ?(primask, basemask etc.)
+ regp->rw2 = r; /* XXX ?(primask, basemask etc.) */
break;
default:
regp->r[r_idx] = r;
}
}
+/* See section C1.6 of the ARMv7-M Architecture Reference Manual */
+void _stlink_usb_read_unsupported_reg(stlink_t *sl, int r_idx, reg *regp) {
+ uint32_t r;
-#if 1 /* stlinkv1 */
+ sl->q_buf[0] = (unsigned char) r_idx;
+ for (int i = 1; i < 4; i++) {
+ sl->q_buf[i] = 0;
+ }
-void _stlink_usb_write_reg(stlink_t *sl, uint32_t reg, int idx) {
- struct stlink_libusb * const slu = sl->backend_data;
- unsigned char* const buf = sl->q_buf;
- unsigned char *cmd_buf = sl->c_buf;
- ssize_t size;
+ _stlink_usb_write_mem32(sl, DCRSR, 4);
+ _stlink_usb_read_mem32(sl, DCRDR, 4);
- memset(cmd_buf, 0, STLINK_CMD_SIZE);
- cmd_buf[0] = STLINK_DEBUG_COMMAND;
- cmd_buf[1] = STLINK_DEBUG_WRITEREG;
- cmd_buf[2] = idx;
- write_uint32(cmd_buf + 3, reg);
- size = send_recv(slu, cmd_buf, STLINK_CMD_SIZE, buf, 2);
- if (size == -1) {
- printf("[!] send_recv\n");
- return;
+ r = read_uint32(sl->q_buf, 0);
+ DLOG("r_idx (%2d) = 0x%08x\n", r_idx, r);
+
+ switch (r_idx) {
+ case 0x14:
+ regp->primask = (uint8_t) (r & 0xFF);
+ regp->basepri = (uint8_t) ((r>>8) & 0xFF);
+ regp->faultmask = (uint8_t) ((r>>16) & 0xFF);
+ regp->control = (uint8_t) ((r>>24) & 0xFF);
+ break;
+ case 0x21:
+ regp->fpscr = r;
+ break;
+ default:
+ regp->s[r_idx - 0x40] = r;
+ break;
+ }
+}
+
+void _stlink_usb_read_all_unsupported_regs(stlink_t *sl, reg *regp) {
+ _stlink_usb_read_unsupported_reg(sl, 0x14, regp);
+ _stlink_usb_read_unsupported_reg(sl, 0x21, regp);
+
+ for (int i = 0; i < 32; i++) {
+ _stlink_usb_read_unsupported_reg(sl, 0x40+i, regp);
}
- sl->q_len = (size_t) size;
- stlink_print_data(sl);
}
-#else /* stlinkv2 */
+/* See section C1.6 of the ARMv7-M Architecture Reference Manual */
+void _stlink_usb_write_unsupported_reg(stlink_t *sl, uint32_t val, int r_idx, reg *regp) {
+ if (r_idx >= 0x1C && r_idx <= 0x1F) { /* primask, basepri, faultmask, or control */
+ /* These are held in the same register */
+ _stlink_usb_read_unsupported_reg(sl, 0x14, regp);
+
+ val = (uint8_t) (val>>24);
+
+ switch (r_idx) {
+ case 0x1C: /* control */
+ val = (((uint32_t) val) << 24) | (((uint32_t) regp->faultmask) << 16) | (((uint32_t) regp->basepri) << 8) | ((uint32_t) regp->primask);
+ break;
+ case 0x1D: /* faultmask */
+ val = (((uint32_t) regp->control) << 24) | (((uint32_t) val) << 16) | (((uint32_t) regp->basepri) << 8) | ((uint32_t) regp->primask);
+ break;
+ case 0x1E: /* basepri */
+ val = (((uint32_t) regp->control) << 24) | (((uint32_t) regp->faultmask) << 16) | (((uint32_t) val) << 8) | ((uint32_t) regp->primask);
+ break;
+ case 0x1F: /* primask */
+ val = (((uint32_t) regp->control) << 24) | (((uint32_t) regp->faultmask) << 16) | (((uint32_t) regp->basepri) << 8) | ((uint32_t) val);
+ break;
+ }
+
+ r_idx = 0x14;
+ }
+
+ write_uint32(sl->q_buf, val);
+
+ _stlink_usb_write_mem32(sl, DCRDR, 4);
+
+ sl->q_buf[0] = (unsigned char) r_idx;
+ sl->q_buf[1] = 0;
+ sl->q_buf[2] = 0x01;
+ sl->q_buf[3] = 0;
+
+ _stlink_usb_write_mem32(sl, DCRSR, 4);
+}
void _stlink_usb_write_reg(stlink_t *sl, uint32_t reg, int idx) {
struct stlink_libusb * const slu = sl->backend_data;
- unsigned char* const buf = sl->q_buf;
- unsigned char *cmd_buf = sl->c_buf;
+ unsigned char* const data = sl->q_buf;
+ unsigned char* const cmd = sl->c_buf;
ssize_t size;
-
-#define STLINK_JTAG_WRITEREG2 0x34
- memset(cmd_buf, 0, STLINK_CMD_SIZE);
- cmd_buf[0] = STLINK_JTAG_COMMAND;
- cmd_buf[1] = STLINK_JTAG_WRITEREG2;
- cmd_buf[2] = idx;
- write_uint32(cmd_buf + 3, reg);
- size = send_recv(slu, cmd_buf, STLINK_CMD_SIZE, buf, 2);
+ uint32_t rep_len = 2;
+ int i = fill_command(sl, SG_DXFER_FROM_DEV, rep_len);
+
+ cmd[i++] = STLINK_DEBUG_COMMAND;
+ cmd[i++] = STLINK_DEBUG_WRITEREG;
+ cmd[i++] = idx;
+ write_uint32(&cmd[i], reg);
+ size = send_recv(slu, 1, cmd, slu->cmd_len, data, rep_len);
if (size == -1) {
printf("[!] send_recv\n");
return;
stlink_print_data(sl);
}
-#endif /* stlinkv1 */
-
-
stlink_backend_t _stlink_usb_backend = {
_stlink_usb_close,
_stlink_usb_exit_debug_mode,
_stlink_usb_exit_dfu_mode,
_stlink_usb_core_id,
_stlink_usb_reset,
+ _stlink_usb_jtag_reset,
_stlink_usb_run,
_stlink_usb_status,
_stlink_usb_version,
+ _stlink_usb_read_debug32,
_stlink_usb_read_mem32,
+ _stlink_usb_write_debug32,
_stlink_usb_write_mem32,
_stlink_usb_write_mem8,
_stlink_usb_read_all_regs,
_stlink_usb_read_reg,
+ _stlink_usb_read_all_unsupported_regs,
+ _stlink_usb_read_unsupported_reg,
+ _stlink_usb_write_unsupported_reg,
_stlink_usb_write_reg,
_stlink_usb_step,
_stlink_usb_current_mode,
- _stlink_usb_force_debug
+ _stlink_usb_force_debug,
+ _stlink_usb_target_voltage
};
-stlink_t* stlink_open_usb(const char *dev_name, const int verbose) {
+stlink_t* stlink_open_usb(const int verbose, int reset, char *p_usb_iserial) {
stlink_t* sl = NULL;
struct stlink_libusb* slu = NULL;
-
- /* unused */
- dev_name = dev_name;
+ int error = -1;
+ int config;
sl = malloc(sizeof (stlink_t));
slu = malloc(sizeof (struct stlink_libusb));
if (sl == NULL) goto on_error;
if (slu == NULL) goto on_error;
+ memset(sl, 0, sizeof (stlink_t));
+ memset(slu, 0, sizeof (struct stlink_libusb));
+
+ ugly_init(verbose);
+ sl->backend = &_stlink_usb_backend;
+ sl->backend_data = slu;
- sl->verbose = verbose;
-
- if (slu->libusb_ctx != NULL) {
- fprintf(stderr, "reopening with an existing context? undefined behaviour!\n");
+ sl->core_stat = STLINK_CORE_STAT_UNKNOWN;
+ if (libusb_init(&(slu->libusb_ctx))) {
+ WLOG("failed to init libusb context, wrong version of libraries?\n");
goto on_error;
- } else {
- if (libusb_init(&(slu->libusb_ctx))) {
- fprintf(stderr, "failed to init libusb context, wrong version of libraries?\n");
+ }
+
+ libusb_device **list;
+ int cnt = libusb_get_device_list(slu->libusb_ctx, &list);
+ struct libusb_device_descriptor desc;
+ int devBus =0;
+ int devAddr=0;
+
+ char *device = getenv("STLINK_DEVICE");
+ if (device) {
+ char *c = strchr(device,':');
+ if (c==NULL) {
+ WLOG("STLINK_DEVICE must be <USB_BUS>:<USB_ADDR> format\n");
goto on_error;
}
+ devBus=atoi(device);
+ *c++=0;
+ devAddr=atoi(c);
+ ILOG("bus %03d dev %03d\n",devBus, devAddr);
+ }
+ while (cnt--){
+ libusb_get_device_descriptor( list[cnt], &desc );
+ if (desc.idVendor!=USB_ST_VID) continue;
+ if (devBus && devAddr)
+ if ((libusb_get_bus_number(list[cnt])!=devBus) || (libusb_get_device_address(list[cnt])!=devAddr)) continue;
+ if ( (desc.idProduct == USB_STLINK_32L_PID) || (desc.idProduct == USB_STLINK_NUCLEO_PID) ){
+ if ((p_usb_iserial != NULL)){
+ unsigned char buffer[13];
+ struct libusb_device_handle* handle;
+ libusb_open(list[cnt], &handle);
+ libusb_get_string_descriptor_ascii(handle, desc.iSerialNumber, buffer, 13);
+ libusb_close(handle);
+ if (memcmp(p_usb_iserial,&buffer,12) == 0){
+ break;
+ }else{
+ continue;
+ }
+ }else{
+ break;
+ }
+ }
+ if (desc.idProduct == USB_STLINK_PID) {
+ slu->protocoll = 1;
+ break;
+ }
}
- int error = -1;
+ if (cnt < 0) {
+ WLOG ("Couldn't find %s ST-Link/V2 devices\n",(devBus && devAddr)?"matched":"any");
+ goto on_error;
+ } else {
+ int error = libusb_open(list[cnt], &slu->usb_handle);
+ if( error !=0 ) {
+ WLOG("Error %d (%s) opening ST-Link/V2 device %03d:%03d\n",
+ error, strerror (errno), libusb_get_bus_number(list[cnt]), libusb_get_device_address(list[cnt]));
+ goto on_error;
+ }
+ }
- libusb_device** devs = NULL;
- libusb_device* dev;
- ssize_t i;
- ssize_t count;
- int config;
+ libusb_free_device_list(list, 1);
- count = libusb_get_device_list(slu->libusb_ctx, &devs);
- if (count < 0) {
- printf("libusb_get_device_list\n");
- goto on_libusb_error;
- }
- for (i = 0; i < count; ++i) {
- dev = devs[i];
- if (is_stlink_device(dev)) break;
- }
- if (i == count) return NULL;
+ if (libusb_kernel_driver_active(slu->usb_handle, 0) == 1) {
+ int r;
- if (libusb_open(dev, &(slu->usb_handle))) {
- printf("libusb_open()\n");
- goto on_libusb_error;
+ r = libusb_detach_kernel_driver(slu->usb_handle, 0);
+ if (r<0) {
+ WLOG("libusb_detach_kernel_driver(() error %s\n", strerror(-r));
+ goto on_libusb_error;
+ }
}
if (libusb_get_configuration(slu->usb_handle, &config)) {
/* this may fail for a previous configured device */
- printf("libusb_get_configuration()\n");
+ WLOG("libusb_get_configuration()\n");
goto on_libusb_error;
}
printf("setting new configuration (%d -> 1)\n", config);
if (libusb_set_configuration(slu->usb_handle, 1)) {
/* this may fail for a previous configured device */
- printf("libusb_set_configuration()\n");
+ WLOG("libusb_set_configuration() failed\n");
goto on_libusb_error;
}
}
if (libusb_claim_interface(slu->usb_handle, 0)) {
- printf("libusb_claim_interface()\n");
+ WLOG("libusb_claim_interface() failed\n");
goto on_libusb_error;
}
- slu->req_trans = libusb_alloc_transfer(0);
- if (slu->req_trans == NULL) {
- printf("libusb_alloc_transfer\n");
- goto on_libusb_error;
+ // TODO - could use the scanning techniq from stm8 code here...
+ slu->ep_rep = 1 /* ep rep */ | LIBUSB_ENDPOINT_IN;
+ if (desc.idProduct == USB_STLINK_NUCLEO_PID) {
+ slu->ep_req = 1 /* ep req */ | LIBUSB_ENDPOINT_OUT;
+ } else {
+ slu->ep_req = 2 /* ep req */ | LIBUSB_ENDPOINT_OUT;
}
- slu->rep_trans = libusb_alloc_transfer(0);
- if (slu->rep_trans == NULL) {
- printf("libusb_alloc_transfer\n");
- goto on_libusb_error;
- }
+ slu->sg_transfer_idx = 0;
+ // TODO - never used at the moment, always CMD_SIZE
+ slu->cmd_len = (slu->protocoll == 1)? STLINK_SG_SIZE: STLINK_CMD_SIZE;
- slu->ep_rep = 1 /* ep rep */ | LIBUSB_ENDPOINT_IN;
- slu->ep_req = 2 /* ep req */ | LIBUSB_ENDPOINT_OUT;
+ /* success */
- /* libusb_reset_device(slu->usb_handle); */
+ if (stlink_current_mode(sl) == STLINK_DEV_DFU_MODE) {
+ ILOG("-- exit_dfu_mode\n");
+ stlink_exit_dfu_mode(sl);
+ }
- /* success */
- error = 0;
+ if (stlink_current_mode(sl) != STLINK_DEV_DEBUG_MODE) {
+ stlink_enter_swd_mode(sl);
+ }
-on_libusb_error:
- if (devs != NULL) {
- libusb_free_device_list(devs, 1);
- fprintf(stderr, "freed libusb device list\n");
+ if (reset) {
+ stlink_reset(sl);
+ usleep(10000);
}
+ stlink_version(sl);
+ error = stlink_load_device_params(sl);
+on_libusb_error:
if (error == -1) {
stlink_close(sl);
return NULL;
}
- sl->backend = &_stlink_usb_backend;
- sl->backend_data = slu;
-
- /* 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 = STM32L_SRAM_SIZE;
-
/* success */
return sl;
on_error:
+ if( slu->libusb_ctx)
+ libusb_exit(slu->libusb_ctx);
if (sl != NULL) free(sl);
if (slu != NULL) free(slu);
- return 0;
+ return NULL;
}
projects / fw / stlink / blobdiff