-#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <time.h>
#include <sys/types.h>
-#include <libusb-1.0/libusb.h>
+#include <libusb.h>
+
#include "stlink-common.h"
#include "stlink-usb.h"
+#include "uglylogging.h"
+
+#define LOG_TAG __FILE__
+#define DLOG(format, args...) ugly_log(UDEBUG, LOG_TAG, format, ## args)
+#define ILOG(format, args...) ugly_log(UINFO, LOG_TAG, format, ## args)
+#define WLOG(format, args...) ugly_log(UWARN, LOG_TAG, format, ## args)
+#define fatal(format, args...) ugly_log(UFATAL, LOG_TAG, format, ## args)
+
+
+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;
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);
return 0;
}
-ssize_t send_recv(struct stlink_libusb* 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;
libusb_fill_bulk_transfer(handle->req_trans, handle->usb_handle,
handle->ep_req,
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;
+ if (rxsize != 0) {
+
+ /* read the response */
+
+ libusb_fill_bulk_transfer(handle->rep_trans, handle->usb_handle,
+ handle->ep_rep, rxbuf, rxsize, NULL, NULL, 0);
+
+ if (submit_wait(handle, handle->rep_trans)) return -1;
+ res = handle->rep_trans->actual_length;
+ }
+
+ if ((handle->protocoll == 1) && terminate) {
+ fprintf(stderr, "This is never used....\n");
+ exit(EXIT_FAILURE);
+ /* Read the SG reply */
+ unsigned char sg_buf[13];
+ libusb_fill_bulk_transfer
+ (handle->rep_trans, handle->usb_handle,
+ handle->ep_rep, sg_buf, 13, NULL, NULL, 0);
+ res = submit_wait(handle, handle->rep_trans);
+ /* The STLink doesn't seem to evaluate the sequence number */
+ handle->sg_transfer_idx++;
+ if (res ) return -1;
+ }
return handle->rep_trans->actual_length;
}
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 is_stlink_device(libusb_device * dev) {
- struct libusb_device_descriptor desc;
-
- if (libusb_get_device_descriptor(dev, &desc))
- return 0;
-
- printf("device: 0x%04x, 0x%04x\n", desc.idVendor, desc.idProduct);
-
- if (desc.idVendor != USB_ST_VID)
- return 0;
-
- if (desc.idProduct != USB_STLINK_32L_PID)
- return 0;
-
- return 1;
+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) {
+ fprintf(stderr, "This is never used....\n");
+ 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 buf = sl->q_buf;
+ 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);
- memset(buf, 0, sizeof (sl->q_buf));
- buf[0] = STLINK_GET_VERSION;
- buf[1] = 0x80;
+ cmd[i++] = STLINK_GET_VERSION;
- 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;
}
+}
+
+uint32_t _stlink_usb_read_debug32(stlink_t *sl, uint32_t addr) {
+ 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 = 8;
+
+ 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 0;
+ }
+ return read_uint32(rdata, 4);
+}
-#if 1 /* DEBUG */
- {
- unsigned int 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) {
- DD(sl, "oops! no write32 support yet, wanted to write %d bytes to %#x\n",
- len, addr);
+ struct stlink_libusb * const slu = sl->backend_data;
+ unsigned char* const data = sl->q_buf;
+ unsigned char* const cmd = sl->c_buf;
+
+ 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) {
- DD(sl, "oops! no write8 support yet, wanted to write %d bytes to %#x\n",
- len, addr);
+ struct stlink_libusb * const slu = sl->backend_data;
+ 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));
+ cmd[i++] = STLINK_DEBUG_COMMAND;
+ cmd[i++] = STLINK_DEBUG_GETSTATUS;
- buf[0] = STLINK_DEBUG_COMMAND;
- buf[1] = 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 */
-
}
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;
}
}
+/**
+ * TODO - not convinced this does anything...
+ * @param sl
+ */
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)?0:1;
- 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;
}
}
+/**
+ * This seems to do a good job of restarting things from the beginning?
+ * @param sl
+ */
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) */
- assert(len < sizeof(sl->q_buf)); // makes a compiler warning? always true?
-
- memset(buf, 0, sizeof (sl->q_buf));
- buf[0] = STLINK_DEBUG_COMMAND;
- buf[1] = STLINK_DEBUG_READMEM_32BIT;
- write_uint32(buf + 2, addr);
- /* windows usb logs show only one byte is used for length ... */
- // Presumably, this is because usb transfers can't be 16 bits worth of bytes long...
- assert (len < 256);
- buf[6] = (uint8_t) len;
+ 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;
}
void _stlink_usb_read_all_regs(stlink_t *sl, reg *regp) {
- DD(sl, "oops! read_all_regs not implemented for USB!\n");
+ struct stlink_libusb * const slu = sl->backend_data;
+ unsigned char* const cmd = sl->c_buf;
+ unsigned char* const data = sl->q_buf;
+ ssize_t size;
+ uint32_t rep_len = 84;
+ int i = fill_command(sl, SG_DXFER_FROM_DEV, rep_len);
+
+ 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;
+ }
+ sl->q_len = (size_t) size;
+ stlink_print_data(sl);
+ 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);
+ if (sl->verbose < 2)
+ return;
+
+ 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));
}
void _stlink_usb_read_reg(stlink_t *sl, int r_idx, reg *regp) {
- DD(sl, "oops! read_reg not implemented for USB! Wanted to read reg %d\n",
- r_idx);
+ 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 r;
+ uint32_t rep_len = 4;
+ int i = fill_command(sl, SG_DXFER_FROM_DEV, rep_len);
+
+ 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);
+ DLOG("r_idx (%2d) = 0x%08x\n", r_idx, r);
+
+ switch (r_idx) {
+ case 16:
+ regp->xpsr = r;
+ break;
+ case 17:
+ regp->main_sp = r;
+ break;
+ case 18:
+ regp->process_sp = r;
+ break;
+ case 19:
+ regp->rw = r; /* XXX ?(primask, basemask etc.) */
+ break;
+ case 20:
+ regp->rw2 = r; /* XXX ?(primask, basemask etc.) */
+ break;
+ default:
+ regp->r[r_idx] = r;
+ }
}
void _stlink_usb_write_reg(stlink_t *sl, uint32_t reg, int idx) {
- DD(sl, "oops! write_reg not implemented for USB! Wanted to write %#x to %d\n",
- reg, idx);
+ 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 = 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;
+ }
+ sl->q_len = (size_t) size;
+ stlink_print_data(sl);
}
-
-
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_t* stlink_open_usb(const char *dev_name, const int verbose) {
+stlink_t* stlink_open_usb(const int verbose) {
stlink_t* sl = NULL;
struct stlink_libusb* slu = NULL;
+ int error = -1;
+ libusb_device** devs = NULL;
+ 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));
- sl->verbose = verbose;
+ ugly_init(verbose);
+ sl->backend = &_stlink_usb_backend;
+ sl->backend_data = slu;
- if (slu->libusb_ctx != NULL) {
- fprintf(stderr, "reopening with an existing context? undefined behaviour!\n");
- goto on_error;
- } else {
- if (libusb_init(&(slu->libusb_ctx))) {
- fprintf(stderr, "failed to init libusb context, wrong version of libraries?\n");
- goto on_error;
- }
- }
-
- int error = -1;
-
- libusb_device** devs = NULL;
- libusb_device* dev;
- ssize_t i;
- ssize_t count;
- int config;
+ sl->core_stat = STLINK_CORE_STAT_UNKNOWN;
- count = libusb_get_device_list(slu->libusb_ctx, &devs);
- if (count < 0) {
- printf("libusb_get_device_list\n");
- goto on_libusb_error;
+ if (libusb_init(&(slu->libusb_ctx))) {
+ WLOG("failed to init libusb context, wrong version of libraries?\n");
+ goto on_error;
}
-
- for (i = 0; i < count; ++i) {
- dev = devs[i];
- if (is_stlink_device(dev)) break;
+
+ slu->usb_handle = libusb_open_device_with_vid_pid(slu->libusb_ctx, USB_ST_VID, USB_STLINK_32L_PID);
+ if (slu->usb_handle == NULL) {
+ WLOG("Couldn't find any ST-Link/V2 devices");
+ goto on_error;
}
- if (i == count) return NULL;
-
- if (libusb_open(dev, &(slu->usb_handle))) {
- printf("libusb_open()\n");
- goto on_libusb_error;
+
+ if (libusb_kernel_driver_active(slu->usb_handle, 0) == 1) {
+ int r;
+
+ 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");
+ WLOG("libusb_alloc_transfer failed\n");
goto on_libusb_error;
}
slu->rep_trans = libusb_alloc_transfer(0);
if (slu->rep_trans == NULL) {
- printf("libusb_alloc_transfer\n");
+ WLOG("libusb_alloc_transfer failed\n");
goto on_libusb_error;
}
-
+ // TODO - could use the scanning techniq from stm8 code here...
slu->ep_rep = 1 /* ep rep */ | LIBUSB_ENDPOINT_IN;
slu->ep_req = 2 /* ep req */ | LIBUSB_ENDPOINT_OUT;
- /* libusb_reset_device(slu->usb_handle); */
+ 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;
/* success */
+
+ if (stlink_current_mode(sl) == STLINK_DEV_DFU_MODE) {
+ ILOG("-- exit_dfu_mode\n");
+ stlink_exit_dfu_mode(sl);
+ }
+
+ if (stlink_current_mode(sl) != STLINK_DEV_DEBUG_MODE) {
+ stlink_enter_swd_mode(sl);
+ }
+
+ stlink_reset(sl);
+ stlink_load_device_params(sl);
+ stlink_version(sl);
+
error = 0;
on_libusb_error:
if (devs != NULL) {
libusb_free_device_list(devs, 1);
- fprintf(stderr, "freed libusb device list\n");
}
if (error == -1) {
return NULL;
}
- sl->backend = &_stlink_usb_backend;
- sl->backend_data = slu;
/* 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;
projects / fw / stlink / blobdiff