/*************************************************************************** * Copyright (C) 2011-2012 by Mathias Kuester * * Mathias Kuester * * * * This code is based on https://github.com/texane/stlink * * * * This program is free software; you can redistribute it and/or modify * * it under the terms of the GNU General Public License as published by * * the Free Software Foundation; either version 2 of the License, or * * (at your option) any later version. * * * * This program is distributed in the hope that it will be useful, * * but WITHOUT ANY WARRANTY; without even the implied warranty of * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * * GNU General Public License for more details. * * * * You should have received a copy of the GNU General Public License * * along with this program; if not, write to the * * Free Software Foundation, Inc., * * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * ***************************************************************************/ #ifdef HAVE_CONFIG_H #include "config.h" #endif /* project specific includes */ #include #include #include #include #include #include #include "libusb_common.h" #define ENDPOINT_IN 0x80 #define ENDPOINT_OUT 0x00 #define STLINK_RX_EP (1|ENDPOINT_IN) #define STLINK_TX_EP (2|ENDPOINT_OUT) #define STLINK_CMD_SIZE (16) #define STLINK_TX_SIZE (4*128) #define STLINK_RX_SIZE (4*128) enum stlink_jtag_api_version { STLINK_JTAG_API_V1 = 0, STLINK_JTAG_API_V2, }; /** */ struct stlink_usb_version { /** */ int stlink; /** */ int jtag; /** */ int swim; /** highest supported jtag api version */ enum stlink_jtag_api_version jtag_api_max; }; /** */ struct stlink_usb_handle_s { /** */ struct jtag_libusb_device_handle *fd; /** */ struct libusb_transfer *trans; /** */ uint8_t txbuf[STLINK_TX_SIZE]; /** */ uint8_t rxbuf[STLINK_RX_SIZE]; /** */ enum stlink_transports transport; /** */ struct stlink_usb_version version; /** */ uint16_t vid; /** */ uint16_t pid; /** */ uint32_t sg_tag; /** this is the currently used jtag api */ enum stlink_jtag_api_version jtag_api; }; #define STLINK_DEBUG_ERR_OK 0x80 #define STLINK_DEBUG_ERR_FAULT 0x81 #define STLINK_CORE_RUNNING 0x80 #define STLINK_CORE_HALTED 0x81 #define STLINK_CORE_STAT_UNKNOWN -1 #define STLINK_GET_VERSION 0xF1 #define STLINK_DEBUG_COMMAND 0xF2 #define STLINK_DFU_COMMAND 0xF3 #define STLINK_SWIM_COMMAND 0xF4 #define STLINK_GET_CURRENT_MODE 0xF5 #define STLINK_DEV_DFU_MODE 0x00 #define STLINK_DEV_MASS_MODE 0x01 #define STLINK_DEV_DEBUG_MODE 0x02 #define STLINK_DEV_SWIM_MODE 0x03 #define STLINK_DEV_BOOTLOADER_MODE 0x04 #define STLINK_DEV_UNKNOWN_MODE -1 #define STLINK_DFU_EXIT 0x07 #define STLINK_SWIM_ENTER 0x00 #define STLINK_SWIM_EXIT 0x01 #define STLINK_DEBUG_ENTER_JTAG 0x00 #define STLINK_DEBUG_GETSTATUS 0x01 #define STLINK_DEBUG_FORCEDEBUG 0x02 #define STLINK_DEBUG_APIV1_RESETSYS 0x03 #define STLINK_DEBUG_APIV1_READALLREGS 0x04 #define STLINK_DEBUG_APIV1_READREG 0x05 #define STLINK_DEBUG_APIV1_WRITEREG 0x06 #define STLINK_DEBUG_READMEM_32BIT 0x07 #define STLINK_DEBUG_WRITEMEM_32BIT 0x08 #define STLINK_DEBUG_RUNCORE 0x09 #define STLINK_DEBUG_STEPCORE 0x0a #define STLINK_DEBUG_APIV1_SETFP 0x0b #define STLINK_DEBUG_READMEM_8BIT 0x0c #define STLINK_DEBUG_WRITEMEM_8BIT 0x0d #define STLINK_DEBUG_APIV1_CLEARFP 0x0e #define STLINK_DEBUG_APIV1_WRITEDEBUGREG 0x0f #define STLINK_DEBUG_APIV1_SETWATCHPOINT 0x10 #define STLINK_DEBUG_ENTER_JTAG 0x00 #define STLINK_DEBUG_ENTER_SWD 0xa3 #define STLINK_DEBUG_APIV1_ENTER 0x20 #define STLINK_DEBUG_EXIT 0x21 #define STLINK_DEBUG_READCOREID 0x22 #define STLINK_DEBUG_APIV2_ENTER 0x30 #define STLINK_DEBUG_APIV2_READ_IDCODES 0x31 #define STLINK_DEBUG_APIV2_RESETSYS 0x32 #define STLINK_DEBUG_APIV2_READREG 0x33 #define STLINK_DEBUG_APIV2_WRITEREG 0x34 #define STLINK_DEBUG_APIV2_READALLREGS 0x3A #define STLINK_DEBUG_APIV2_DRIVE_NRST 0x3C #define STLINK_DEBUG_APIV2_DRIVE_NRST_LOW 0x00 #define STLINK_DEBUG_APIV2_DRIVE_NRST_HIGH 0x01 #define STLINK_DEBUG_APIV2_DRIVE_NRST_PULSE 0x02 /** */ enum stlink_mode { STLINK_MODE_UNKNOWN = 0, STLINK_MODE_DFU, STLINK_MODE_MASS, STLINK_MODE_DEBUG_JTAG, STLINK_MODE_DEBUG_SWD, STLINK_MODE_DEBUG_SWIM }; /** */ static int stlink_usb_xfer_v1_send_cmd(void *handle, const uint8_t *cmd, int cmdsize, int ep, int size) { uint8_t sg_buffer[31]; struct stlink_usb_handle_s *h; assert(handle != NULL); assert(cmdsize <= 16); h = (struct stlink_usb_handle_s *)handle; h->sg_tag = (h->sg_tag + 1) & 1; /* seriously? */ memset(sg_buffer, 0, sizeof(sg_buffer)); h_u32_to_le(sg_buffer, 0x43425355); /* USBC */ h_u32_to_le(&sg_buffer[4], h->sg_tag); h_u32_to_le(&sg_buffer[8], size); sg_buffer[12] = (ep == STLINK_RX_EP ? ENDPOINT_IN : ENDPOINT_OUT); /* sg_buffer[13] = 0; */ sg_buffer[14] = (uint8_t)cmdsize; memcpy(&sg_buffer[15], cmd, cmdsize); if (jtag_libusb_bulk_write(h->fd, STLINK_TX_EP, (char *)sg_buffer, sizeof(sg_buffer), 1000) != sizeof(sg_buffer)) { LOG_DEBUG("send failed\n"); return ERROR_FAIL; } return ERROR_OK; } /** */ static int stlink_usb_xfer_v1_get_status(void *handle, uint8_t *sg_buffer, int len) { struct stlink_usb_handle_s *h; assert(handle != NULL); h = (struct stlink_usb_handle_s *)handle; /* read status */ memset(sg_buffer, 0, len); if (jtag_libusb_bulk_read(h->fd, STLINK_RX_EP, (char *)sg_buffer, len, 1000) != len) return ERROR_FAIL; uint32_t t1 = le_to_h_u32(sg_buffer+0); /* uint32_t t2 = le_to_h_u32(sg_buffer+4); */ /* check for USBS */ if (t1 != 0x53425355) return ERROR_FAIL; return ERROR_OK; } /** */ static int stlink_usb_xfer_rw(void *handle, int ep, uint8_t *buf, int size) { struct stlink_usb_handle_s *h; h = (struct stlink_usb_handle_s *)handle; if (!size) return ERROR_OK; if (ep == STLINK_RX_EP) { if (jtag_libusb_bulk_read(h->fd, STLINK_RX_EP, (char *)buf, size, 1000) != size) { return ERROR_FAIL; } } else { if (jtag_libusb_bulk_write(h->fd, STLINK_TX_EP, (char *)buf, size, 1000) != size) { return ERROR_FAIL; } } return ERROR_OK; } /** * http://en.wikipedia.org/wiki/SCSI_Request_Sense_Command */ static int stlink_usb_xfer_v1_get_sense(void *handle) { int err; uint8_t cdb[STLINK_CMD_SIZE]; uint8_t sense[18]; uint8_t status[13]; assert(handle != NULL); memset(cdb, 0, sizeof(cdb)); cdb[0] = 0x03; cdb[4] = sizeof(sense); err = stlink_usb_xfer_v1_send_cmd(handle, cdb, sizeof(cdb), STLINK_RX_EP, sizeof(sense)); if (err != ERROR_OK) return err; err = stlink_usb_xfer_rw(handle, STLINK_RX_EP, sense, sizeof(sense)); if (err != ERROR_OK) return err; err = stlink_usb_xfer_v1_get_status(handle, status, sizeof(status)); if (err != ERROR_OK) return err; /* check for sense */ if (status[12] != 0) return ERROR_FAIL; /* if (sense[0] != 0x70 && sense[0] != 0x71) */ return err; } /** */ static int stlink_usb_xfer_v1_check_status(void *handle) { int err; uint8_t sg_buffer[13]; err = stlink_usb_xfer_v1_get_status(handle, sg_buffer, sizeof(sg_buffer)); if (err != ERROR_OK) return err; /* check for sense */ if (sg_buffer[12] == 1) { LOG_DEBUG("get sense"); err = stlink_usb_xfer_v1_get_sense(handle); } return err; } /** */ static int stlink_usb_xfer_v1(void *handle, const uint8_t *cmd, int cmdsize, int ep, uint8_t *buf, int size) { int err; assert(handle != NULL); err = stlink_usb_xfer_v1_send_cmd(handle, cmd, cmdsize, ep, size); if (err != ERROR_OK) return err; err = stlink_usb_xfer_rw(handle, ep, buf, size); if (err != ERROR_OK) return err; return stlink_usb_xfer_v1_check_status(handle); } /** */ static int stlink_usb_xfer_v2(void *handle, const uint8_t *cmd, int cmdsize, int ep, uint8_t *buf, int size) { struct stlink_usb_handle_s *h; assert(handle != NULL); h = (struct stlink_usb_handle_s *)handle; if (jtag_libusb_bulk_write(h->fd, STLINK_TX_EP, (char *)cmd, cmdsize, 1000) != cmdsize) { return ERROR_FAIL; } return stlink_usb_xfer_rw(handle, ep, buf, size); } /** */ static int stlink_usb_xfer(void *handle, const uint8_t *cmd, int cmdsize, int ep, uint8_t *buf, int size) { struct stlink_usb_handle_s *h; assert(handle != NULL); assert(cmdsize == STLINK_CMD_SIZE); h = (struct stlink_usb_handle_s *)handle; if (h->version.stlink == 1) { return stlink_usb_xfer_v1(handle, cmd, cmdsize, ep, buf, size); } else { return stlink_usb_xfer_v2(handle, cmd, cmdsize, ep, buf, size); } } /** */ static int stlink_usb_recv(void *handle, const uint8_t *cmd, int cmdsize, uint8_t *rxbuf, int rxsize) { return stlink_usb_xfer(handle, cmd, cmdsize, STLINK_RX_EP, rxbuf, rxsize); } /** */ static void stlink_usb_init_buffer(void *handle) { struct stlink_usb_handle_s *h; assert(handle != NULL); h = (struct stlink_usb_handle_s *)handle; memset(h->txbuf, 0, STLINK_TX_SIZE); memset(h->rxbuf, 0, STLINK_RX_SIZE); } static const char * const stlink_usb_error_msg[] = { "unknown" }; /** */ static int stlink_usb_error_check(void *handle) { int res; const char *err_msg = 0; struct stlink_usb_handle_s *h; assert(handle != NULL); h = (struct stlink_usb_handle_s *)handle; /* TODO: no error checking yet on api V1 */ if (h->jtag_api == STLINK_JTAG_API_V1) h->rxbuf[0] = STLINK_DEBUG_ERR_OK; switch (h->rxbuf[0]) { case STLINK_DEBUG_ERR_OK: res = ERROR_OK; break; case STLINK_DEBUG_ERR_FAULT: default: err_msg = stlink_usb_error_msg[0]; res = ERROR_FAIL; break; } if (res != ERROR_OK) LOG_DEBUG("status error: %d ('%s')", h->rxbuf[0], err_msg); return res; } /** */ static int stlink_usb_version(void *handle) { int res; uint16_t v; struct stlink_usb_handle_s *h; assert(handle != NULL); h = (struct stlink_usb_handle_s *)handle; stlink_usb_init_buffer(handle); h->txbuf[0] = STLINK_GET_VERSION; res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 6); if (res != ERROR_OK) return res; v = (h->rxbuf[0] << 8) | h->rxbuf[1]; h->version.stlink = (v >> 12) & 0x0f; h->version.jtag = (v >> 6) & 0x3f; h->version.swim = v & 0x3f; h->vid = buf_get_u32(h->rxbuf, 16, 16); h->pid = buf_get_u32(h->rxbuf, 32, 16); /* set the supported jtag api version * V1 doesn't support API V2 at all * V2 support API V2 since JTAG V13 */ if ((h->version.stlink == 2) && (h->version.jtag > 12)) h->version.jtag_api_max = STLINK_JTAG_API_V2; else h->version.jtag_api_max = STLINK_JTAG_API_V1; LOG_DEBUG("STLINK v%d JTAG v%d API v%d SWIM v%d VID %04X PID %04X", h->version.stlink, h->version.jtag, (h->version.jtag_api_max == STLINK_JTAG_API_V1) ? 1 : 2, h->version.swim, h->vid, h->pid); return ERROR_OK; } /** */ static int stlink_usb_current_mode(void *handle, uint8_t *mode) { int res; struct stlink_usb_handle_s *h; assert(handle != NULL); h = (struct stlink_usb_handle_s *)handle; stlink_usb_init_buffer(handle); h->txbuf[0] = STLINK_GET_CURRENT_MODE; res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 2); if (res != ERROR_OK) return res; *mode = h->rxbuf[0]; return ERROR_OK; } /** */ static int stlink_usb_mode_enter(void *handle, enum stlink_mode type) { int res; int rx_size = 0; struct stlink_usb_handle_s *h; assert(handle != NULL); h = (struct stlink_usb_handle_s *)handle; stlink_usb_init_buffer(handle); switch (type) { case STLINK_MODE_DEBUG_JTAG: h->txbuf[0] = STLINK_DEBUG_COMMAND; if (h->jtag_api == STLINK_JTAG_API_V1) h->txbuf[1] = STLINK_DEBUG_APIV1_ENTER; else h->txbuf[1] = STLINK_DEBUG_APIV2_ENTER; h->txbuf[2] = STLINK_DEBUG_ENTER_JTAG; break; case STLINK_MODE_DEBUG_SWD: h->txbuf[0] = STLINK_DEBUG_COMMAND; if (h->jtag_api == STLINK_JTAG_API_V1) h->txbuf[1] = STLINK_DEBUG_APIV1_ENTER; else h->txbuf[1] = STLINK_DEBUG_APIV2_ENTER; h->txbuf[2] = STLINK_DEBUG_ENTER_SWD; break; case STLINK_MODE_DEBUG_SWIM: h->txbuf[0] = STLINK_SWIM_COMMAND; h->txbuf[1] = STLINK_SWIM_ENTER; break; case STLINK_MODE_DFU: case STLINK_MODE_MASS: default: return ERROR_FAIL; } /* on api V2 we are able the read the latest command * status * TODO: we need the test on api V1 too */ if (h->jtag_api == STLINK_JTAG_API_V2) rx_size = 2; res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, rx_size); if (res != ERROR_OK) return res; res = stlink_usb_error_check(h); return res; } /** */ static int stlink_usb_mode_leave(void *handle, enum stlink_mode type) { int res; struct stlink_usb_handle_s *h; assert(handle != NULL); h = (struct stlink_usb_handle_s *)handle; stlink_usb_init_buffer(handle); switch (type) { case STLINK_MODE_DEBUG_JTAG: case STLINK_MODE_DEBUG_SWD: h->txbuf[0] = STLINK_DEBUG_COMMAND; h->txbuf[1] = STLINK_DEBUG_EXIT; break; case STLINK_MODE_DEBUG_SWIM: h->txbuf[0] = STLINK_SWIM_COMMAND; h->txbuf[1] = STLINK_SWIM_EXIT; break; case STLINK_MODE_DFU: h->txbuf[0] = STLINK_DFU_COMMAND; h->txbuf[1] = STLINK_DFU_EXIT; break; case STLINK_MODE_MASS: default: return ERROR_FAIL; } res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, 0, 0); if (res != ERROR_OK) return res; return ERROR_OK; } /** */ static int stlink_usb_init_mode(void *handle) { int res; uint8_t mode; enum stlink_mode emode; struct stlink_usb_handle_s *h; assert(handle != NULL); h = (struct stlink_usb_handle_s *)handle; res = stlink_usb_current_mode(handle, &mode); if (res != ERROR_OK) return res; LOG_DEBUG("MODE: %02X", mode); /* try to exit current mode */ switch (mode) { case STLINK_DEV_DFU_MODE: emode = STLINK_MODE_DFU; break; case STLINK_DEV_DEBUG_MODE: emode = STLINK_MODE_DEBUG_SWD; break; case STLINK_DEV_SWIM_MODE: emode = STLINK_MODE_DEBUG_SWIM; break; case STLINK_DEV_BOOTLOADER_MODE: case STLINK_DEV_MASS_MODE: default: emode = STLINK_MODE_UNKNOWN; break; } if (emode != STLINK_MODE_UNKNOWN) { res = stlink_usb_mode_leave(handle, emode); if (res != ERROR_OK) return res; } res = stlink_usb_current_mode(handle, &mode); if (res != ERROR_OK) return res; LOG_DEBUG("MODE: %02X", mode); /* set selected mode */ switch (h->transport) { case STLINK_TRANSPORT_SWD: emode = STLINK_MODE_DEBUG_SWD; break; case STLINK_TRANSPORT_JTAG: emode = STLINK_MODE_DEBUG_JTAG; break; case STLINK_TRANSPORT_SWIM: emode = STLINK_MODE_DEBUG_SWIM; break; default: emode = STLINK_MODE_UNKNOWN; break; } if (emode == STLINK_MODE_UNKNOWN) { LOG_ERROR("selected mode (transport) not supported"); return ERROR_FAIL; } res = stlink_usb_mode_enter(handle, emode); if (res != ERROR_OK) return res; res = stlink_usb_current_mode(handle, &mode); if (res != ERROR_OK) return res; LOG_DEBUG("MODE: %02X", mode); return ERROR_OK; } /** */ static int stlink_usb_idcode(void *handle, uint32_t *idcode) { int res; struct stlink_usb_handle_s *h; assert(handle != NULL); h = (struct stlink_usb_handle_s *)handle; stlink_usb_init_buffer(handle); h->txbuf[0] = STLINK_DEBUG_COMMAND; h->txbuf[1] = STLINK_DEBUG_READCOREID; res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 4); if (res != ERROR_OK) return res; *idcode = le_to_h_u32(h->rxbuf); LOG_DEBUG("IDCODE: %08X", *idcode); return ERROR_OK; } /** */ static enum target_state stlink_usb_state(void *handle) { int res; struct stlink_usb_handle_s *h; assert(handle != NULL); h = (struct stlink_usb_handle_s *)handle; if (h->jtag_api == STLINK_JTAG_API_V2) return TARGET_UNKNOWN; stlink_usb_init_buffer(handle); h->txbuf[0] = STLINK_DEBUG_COMMAND; h->txbuf[1] = STLINK_DEBUG_GETSTATUS; res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 2); if (res != ERROR_OK) return TARGET_UNKNOWN; if (h->rxbuf[0] == STLINK_CORE_RUNNING) return TARGET_RUNNING; if (h->rxbuf[0] == STLINK_CORE_HALTED) return TARGET_HALTED; return TARGET_UNKNOWN; } /** */ static int stlink_usb_reset(void *handle) { int res; struct stlink_usb_handle_s *h; assert(handle != NULL); h = (struct stlink_usb_handle_s *)handle; stlink_usb_init_buffer(handle); h->txbuf[0] = STLINK_DEBUG_COMMAND; if (h->jtag_api == STLINK_JTAG_API_V1) h->txbuf[1] = STLINK_DEBUG_APIV1_RESETSYS; else h->txbuf[1] = STLINK_DEBUG_APIV2_RESETSYS; res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 2); if (res != ERROR_OK) return res; LOG_DEBUG("RESET: %08X", h->rxbuf[0]); return ERROR_OK; } /** */ static int stlink_usb_run(void *handle) { int res; struct stlink_usb_handle_s *h; assert(handle != NULL); h = (struct stlink_usb_handle_s *)handle; if (h->jtag_api == STLINK_JTAG_API_V2) return ERROR_FAIL; stlink_usb_init_buffer(handle); h->txbuf[0] = STLINK_DEBUG_COMMAND; h->txbuf[1] = STLINK_DEBUG_RUNCORE; res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 2); if (res != ERROR_OK) return res; return ERROR_OK; } /** */ static int stlink_usb_halt(void *handle) { int res; struct stlink_usb_handle_s *h; assert(handle != NULL); h = (struct stlink_usb_handle_s *)handle; if (h->jtag_api == STLINK_JTAG_API_V2) return ERROR_FAIL; stlink_usb_init_buffer(handle); h->txbuf[0] = STLINK_DEBUG_COMMAND; h->txbuf[1] = STLINK_DEBUG_FORCEDEBUG; res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 2); if (res != ERROR_OK) return res; return ERROR_OK; } /** */ static int stlink_usb_step(void *handle) { int res; struct stlink_usb_handle_s *h; assert(handle != NULL); h = (struct stlink_usb_handle_s *)handle; if (h->jtag_api == STLINK_JTAG_API_V2) return ERROR_FAIL; stlink_usb_init_buffer(handle); h->txbuf[0] = STLINK_DEBUG_COMMAND; h->txbuf[1] = STLINK_DEBUG_STEPCORE; res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 2); if (res != ERROR_OK) return res; return ERROR_OK; } /** */ static int stlink_usb_read_regs(void *handle) { int res; struct stlink_usb_handle_s *h; assert(handle != NULL); h = (struct stlink_usb_handle_s *)handle; stlink_usb_init_buffer(handle); h->txbuf[0] = STLINK_DEBUG_COMMAND; if (h->jtag_api == STLINK_JTAG_API_V1) h->txbuf[1] = STLINK_DEBUG_APIV1_READALLREGS; else h->txbuf[1] = STLINK_DEBUG_APIV2_READALLREGS; res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 84); if (res != ERROR_OK) return res; return ERROR_OK; } /** */ static int stlink_usb_read_reg(void *handle, int num, uint32_t *val) { int res; struct stlink_usb_handle_s *h; assert(handle != NULL); h = (struct stlink_usb_handle_s *)handle; stlink_usb_init_buffer(handle); h->txbuf[0] = STLINK_DEBUG_COMMAND; if (h->jtag_api == STLINK_JTAG_API_V1) h->txbuf[1] = STLINK_DEBUG_APIV1_READREG; else h->txbuf[1] = STLINK_DEBUG_APIV2_READREG; h->txbuf[2] = num; res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 4); if (res != ERROR_OK) return res; *val = le_to_h_u32(h->rxbuf); return ERROR_OK; } /** */ static int stlink_usb_write_reg(void *handle, int num, uint32_t val) { int res; struct stlink_usb_handle_s *h; assert(handle != NULL); h = (struct stlink_usb_handle_s *)handle; stlink_usb_init_buffer(handle); h->txbuf[0] = STLINK_DEBUG_COMMAND; if (h->jtag_api == STLINK_JTAG_API_V1) h->txbuf[1] = STLINK_DEBUG_APIV1_WRITEREG; else h->txbuf[1] = STLINK_DEBUG_APIV2_WRITEREG; h->txbuf[2] = num; h_u32_to_le(h->txbuf + 3, val); res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 2); if (res != ERROR_OK) return res; return ERROR_OK; } /** */ static int stlink_usb_read_mem8(void *handle, uint32_t addr, uint16_t len, uint8_t *buffer) { int res; uint16_t read_len = len; struct stlink_usb_handle_s *h; assert(handle != NULL); h = (struct stlink_usb_handle_s *)handle; stlink_usb_init_buffer(handle); h->txbuf[0] = STLINK_DEBUG_COMMAND; h->txbuf[1] = STLINK_DEBUG_READMEM_8BIT; h_u32_to_le(h->txbuf + 2, addr); h_u16_to_le(h->txbuf + 2 + 4, len); /* we need to fix read length for single bytes */ if (read_len == 1) read_len++; res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, read_len); if (res != ERROR_OK) return res; memcpy(buffer, h->rxbuf, len); return ERROR_OK; } /** */ static int stlink_usb_write_mem8(void *handle, uint32_t addr, uint16_t len, const uint8_t *buffer) { int res; struct stlink_usb_handle_s *h; assert(handle != NULL); h = (struct stlink_usb_handle_s *)handle; stlink_usb_init_buffer(handle); h->txbuf[0] = STLINK_DEBUG_COMMAND; h->txbuf[1] = STLINK_DEBUG_WRITEMEM_8BIT; h_u32_to_le(h->txbuf + 2, addr); h_u16_to_le(h->txbuf + 2 + 4, len); res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, 0, 0); if (res != ERROR_OK) return res; res = stlink_usb_recv(handle, (uint8_t *) buffer, len, 0, 0); if (res != ERROR_OK) return res; return ERROR_OK; } /** */ static int stlink_usb_read_mem32(void *handle, uint32_t addr, uint16_t len, uint32_t *buffer) { int res; struct stlink_usb_handle_s *h; assert(handle != NULL); h = (struct stlink_usb_handle_s *)handle; stlink_usb_init_buffer(handle); len *= 4; h->txbuf[0] = STLINK_DEBUG_COMMAND; h->txbuf[1] = STLINK_DEBUG_READMEM_32BIT; h_u32_to_le(h->txbuf + 2, addr); h_u16_to_le(h->txbuf + 2 + 4, len); res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, len); if (res != ERROR_OK) return res; memcpy(buffer, h->rxbuf, len); return ERROR_OK; } /** */ static int stlink_usb_write_mem32(void *handle, uint32_t addr, uint16_t len, const uint32_t *buffer) { int res; struct stlink_usb_handle_s *h; assert(handle != NULL); h = (struct stlink_usb_handle_s *)handle; stlink_usb_init_buffer(handle); len *= 4; h->txbuf[0] = STLINK_DEBUG_COMMAND; h->txbuf[1] = STLINK_DEBUG_WRITEMEM_32BIT; h_u32_to_le(h->txbuf + 2, addr); h_u16_to_le(h->txbuf + 2 + 4, len); res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, 0, 0); if (res != ERROR_OK) return res; res = stlink_usb_recv(handle, (uint8_t *) buffer, len, 0, 0); if (res != ERROR_OK) return res; return ERROR_OK; } /** */ static int stlink_usb_open(struct stlink_interface_param_s *param, void **fd) { int err; struct stlink_usb_handle_s *h; LOG_DEBUG("stlink_usb_open"); h = malloc(sizeof(struct stlink_usb_handle_s)); if (h == 0) { LOG_DEBUG("malloc failed"); return ERROR_FAIL; } h->transport = param->transport; const uint16_t vids[] = { param->vid, 0 }; const uint16_t pids[] = { param->pid, 0 }; LOG_DEBUG("transport: %d vid: %04x pid: %04x", param->transport, param->vid, param->pid); if (jtag_libusb_open(vids, pids, &h->fd) != ERROR_OK) { LOG_ERROR("open failed"); return ERROR_FAIL; } jtag_libusb_set_configuration(h->fd, 0); if (jtag_libusb_claim_interface(h->fd, 0) != ERROR_OK) { LOG_DEBUG("claim interface failed"); return ERROR_FAIL; } /* wrap version for first read */ switch (param->pid) { case 0x3744: h->version.stlink = 1; break; default: h->version.stlink = 2; break; } /* get the device version */ err = stlink_usb_version(h); if (err != ERROR_OK) { LOG_ERROR("read version failed"); jtag_libusb_close(h->fd); free(h); return err; } /* compare usb vid/pid */ if ((param->vid != h->vid) || (param->pid != h->pid)) LOG_INFO("vid/pid are not identical: %04X/%04X %04X/%04X", param->vid, param->pid, h->vid, h->pid); /* check if mode is supported */ err = ERROR_OK; switch (h->transport) { case STLINK_TRANSPORT_SWD: case STLINK_TRANSPORT_JTAG: if (h->version.jtag == 0) err = ERROR_FAIL; break; case STLINK_TRANSPORT_SWIM: if (h->version.swim == 0) err = ERROR_FAIL; break; default: err = ERROR_FAIL; break; } if (err != ERROR_OK) { LOG_ERROR("mode (transport) not supported by device"); jtag_libusb_close(h->fd); free(h); return err; } /* set the used jtag api */ h->jtag_api = STLINK_JTAG_API_V1; /* initialize the debug hardware */ err = stlink_usb_init_mode(h); if (err != ERROR_OK) { LOG_ERROR("init mode failed"); jtag_libusb_close(h->fd); free(h); return err; } *fd = h; return ERROR_OK; } /** */ static int stlink_usb_close(void *fd) { return ERROR_OK; } /** */ struct stlink_layout_api_s stlink_usb_layout_api = { /** */ .open = stlink_usb_open, /** */ .close = stlink_usb_close, /** */ .idcode = stlink_usb_idcode, /** */ .state = stlink_usb_state, /** */ .reset = stlink_usb_reset, /** */ .run = stlink_usb_run, /** */ .halt = stlink_usb_halt, /** */ .step = stlink_usb_step, /** */ .read_regs = stlink_usb_read_regs, /** */ .read_reg = stlink_usb_read_reg, /** */ .write_reg = stlink_usb_write_reg, /** */ .read_mem8 = stlink_usb_read_mem8, /** */ .write_mem8 = stlink_usb_write_mem8, /** */ .read_mem32 = stlink_usb_read_mem32, /** */ .write_mem32 = stlink_usb_write_mem32, };