X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=src%2Fstlink-usb.c;h=d8b6c4673318a889147e6c8d76fcdac5de701f98;hb=dceade1c279f2efb2607365d67cd841e5e100437;hp=72ffda17787439dfec7611b0efc7f0cf7aa62227;hpb=fc85ba71f1bd1eeebbc36e69bc5d667c812784b3;p=fw%2Fstlink diff --git a/src/stlink-usb.c b/src/stlink-usb.c index 72ffda1..d8b6c46 100644 --- a/src/stlink-usb.c +++ b/src/stlink-usb.c @@ -5,28 +5,23 @@ #include #include #include +#include #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) - -/* code from bsd timersub.h +/* code from bsd timersub.h http://www.gnu-darwin.org/www001/src/ports/net/libevnet/work/libevnet-0.3.8/libnostd/bsd/sys/time/timersub.h.html */ #if !defined timersub #define timersub(a, b, r) do { \ - (r)->tv_sec = (a)->tv_sec - (b)->tv_sec; \ - (r)->tv_usec = (a)->tv_usec - (b)->tv_usec; \ - if ((r)->tv_usec < 0) { \ - --(r)->tv_sec; \ - (r)->tv_usec += 1000000; \ - } \ + (r)->tv_sec = (a)->tv_sec - (b)->tv_sec; \ + (r)->tv_usec = (a)->tv_usec - (b)->tv_usec; \ + if ((r)->tv_usec < 0) { \ + --(r)->tv_sec; \ + (r)->tv_usec += 1000000; \ + } \ } while (0) #endif @@ -135,14 +130,14 @@ ssize_t send_recv(struct stlink_libusb* handle, int terminate, if (rxsize != 0) { /* read the response */ - + libusb_fill_bulk_transfer(handle->rep_trans, handle->usb_handle, - handle->ep_rep, rxbuf, rxsize, NULL, NULL, 0); - + 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) { /* Read the SG reply */ unsigned char sg_buf[13]; @@ -150,7 +145,7 @@ ssize_t send_recv(struct stlink_libusb* handle, int terminate, (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 */ + /* The STLink doesn't seem to evaluate the sequence number */ handle->sg_transfer_idx++; if (res ) return -1; } @@ -203,13 +198,41 @@ void _stlink_usb_version(stlink_t *sl) { } } +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; + + cmd[i++] = STLINK_GET_TARGET_VOLTAGE; + + 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; + } + + 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 voltage; +} + 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; @@ -228,7 +251,7 @@ void _stlink_usb_write_debug32(stlink_t *sl, uint32_t addr, uint32_t data) { 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; @@ -278,7 +301,7 @@ int _stlink_usb_current_mode(stlink_t * sl) { ssize_t size; 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) { @@ -410,7 +433,7 @@ void _stlink_usb_jtag_reset(stlink_t * sl, int value) { cmd[i++] = STLINK_DEBUG_COMMAND; cmd[i++] = STLINK_JTAG_DRIVE_NRST; - cmd[i++] = (value)?0:1; + cmd[i++] = value; size = send_recv(slu, 1, cmd, slu->cmd_len, data, rep_len); if (size == -1) { @@ -554,7 +577,7 @@ void _stlink_usb_read_reg(stlink_t *sl, int r_idx, reg *regp) { 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; @@ -576,6 +599,84 @@ void _stlink_usb_read_reg(stlink_t *sl, int r_idx, reg *regp) { } } +/* 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; + + sl->q_buf[0] = (unsigned char) r_idx; + for (int i = 1; i < 4; i++) { + sl->q_buf[i] = 0; + } + + _stlink_usb_write_mem32(sl, DCRSR, 4); + _stlink_usb_read_mem32(sl, DCRDR, 4); + + 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); + } +} + +/* 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 data = sl->q_buf; @@ -616,14 +717,18 @@ stlink_backend_t _stlink_usb_backend = { _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 int verbose) { +stlink_t* stlink_open_usb(const int verbose, int reset) { stlink_t* sl = NULL; struct stlink_libusb* slu = NULL; int error = -1; @@ -640,27 +745,62 @@ stlink_t* stlink_open_usb(const int verbose) { ugly_init(verbose); sl->backend = &_stlink_usb_backend; sl->backend_data = slu; - + 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; } - - slu->usb_handle = libusb_open_device_with_vid_pid(slu->libusb_ctx, USB_ST_VID, USB_STLINK_32L_PID); - if (slu->usb_handle == NULL) { - slu->usb_handle = libusb_open_device_with_vid_pid(slu->libusb_ctx, USB_ST_VID, USB_STLINK_PID); - if (slu->usb_handle == NULL) { - WLOG("Couldn't find any ST-Link/V2 devices"); - goto on_error; - } - slu->protocoll = 1; + + 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 : 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) ) break; + if (desc.idProduct == USB_STLINK_PID) { + slu->protocoll = 1; + break; + } + } + + 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_free_device_list(list, 1); + + 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)); @@ -699,9 +839,14 @@ stlink_t* stlink_open_usb(const int verbose) { 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; + 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->sg_transfer_idx = 0; // TODO - never used at the moment, always CMD_SIZE @@ -710,19 +855,19 @@ stlink_t* stlink_open_usb(const int verbose) { /* success */ if (stlink_current_mode(sl) == STLINK_DEV_DFU_MODE) { - ILOG("-- exit_dfu_mode\n"); - stlink_exit_dfu_mode(sl); + 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_enter_swd_mode(sl); } - stlink_reset(sl); - stlink_load_device_params(sl); + if (reset) { + stlink_reset(sl); + } stlink_version(sl); - - error = 0; + error = stlink_load_device_params(sl); on_libusb_error: if (devs != NULL) { @@ -739,9 +884,9 @@ on_libusb_error: on_error: if( slu->libusb_ctx) - libusb_exit(slu->libusb_ctx); + libusb_exit(slu->libusb_ctx); if (sl != NULL) free(sl); if (slu != NULL) free(slu); - return 0; + return NULL; }