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- /***************************************************************************
- * Copyright (C) 2011 by Mathias Kuester *
- * Mathias Kuester <kesmtp@freenet.de> *
- * *
- * 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 <helper/binarybuffer.h>
- #include <jtag/interface.h>
- #include <jtag/stlink/stlink_layout.h>
- #include <jtag/stlink/stlink_interface.h>
- #include <target/target.h>
-
- #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)
-
- /** */
- 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];
- };
-
- #define STLINK_OK 0x80
- #define STLINK_FALSE 0x81
- #define STLINK_CORE_RUNNING 0x80
- #define STLINK_CORE_HALTED 0x81
- #define STLINK_CORE_STAT_UNKNOWN -1
-
- #define STLINK_GET_VERSION 0xf1
- #define STLINK_GET_CURRENT_MODE 0xf5
-
- #define STLINK_DEBUG_COMMAND 0xF2
- #define STLINK_DFU_COMMAND 0xF3
- #define STLINK_DFU_EXIT 0x07
-
- #define STLINK_DEV_DFU_MODE 0x00
- #define STLINK_DEV_MASS_MODE 0x01
- #define STLINK_DEV_DEBUG_MODE 0x02
- #define STLINK_DEV_UNKNOWN_MODE -1
-
- #define STLINK_DEBUG_ENTER 0x20
- #define STLINK_DEBUG_EXIT 0x21
- #define STLINK_DEBUG_READCOREID 0x22
-
- #define STLINK_DEBUG_GETSTATUS 0x01
- #define STLINK_DEBUG_FORCEDEBUG 0x02
- #define STLINK_DEBUG_RESETSYS 0x03
- #define STLINK_DEBUG_READALLREGS 0x04
- #define STLINK_DEBUG_READREG 0x05
- #define STLINK_DEBUG_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_SETFP 0x0b
- #define STLINK_DEBUG_WRITEMEM_8BIT 0x0d
- #define STLINK_DEBUG_CLEARFP 0x0e
- #define STLINK_DEBUG_WRITEDEBUGREG 0x0f
- #define STLINK_DEBUG_ENTER_SWD 0xa3
- #define STLINK_DEBUG_ENTER_JTAG 0x00
-
- #define STLINK_SWD_ENTER 0x30
- #define STLINK_SWD_READCOREID 0x32
-
- /** */
- int stlink_usb_recv(void *handle, uint8_t *txbuf, int txsize, uint8_t *rxbuf,
- int rxsize)
- {
- 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 *)txbuf, txsize,
- 1000) != txsize) {
- return ERROR_FAIL;
- }
- if (rxsize && rxbuf) {
- if (jtag_libusb_bulk_read(h->fd, STLINK_RX_EP, (char *)rxbuf,
- rxsize, 1000) != rxsize) {
- return ERROR_FAIL;
- }
- }
- return ERROR_OK;
- }
-
- /** */
- 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_CMD_SIZE);
- }
-
- /** */
- 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];
-
- LOG_DEBUG("STLINK v%d", (v >> 12) & 0x0f);
- LOG_DEBUG("JTAG v%d", (v >> 6) & 0x3f);
- LOG_DEBUG("SWIM v%d", v & 0x3f);
- LOG_DEBUG("VID %04X", buf_get_u32(h->rxbuf, 16, 16));
- LOG_DEBUG("PID %04X", buf_get_u32(h->rxbuf, 32, 16));
-
- return ERROR_OK;
- }
-
- /** */
- 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;
- }
-
- /** */
- int stlink_usb_dfu_mode_leave(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_DFU_COMMAND;
- h->txbuf[1] = STLINK_DFU_EXIT;
-
- res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, 0, 0);
-
- if (res != ERROR_OK)
- return res;
-
- return ERROR_OK;
- }
-
- /** */
- int stlink_usb_swd_mode_enter(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;
- h->txbuf[1] = STLINK_DEBUG_ENTER;
- h->txbuf[2] = STLINK_DEBUG_ENTER_SWD;
-
- res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, 0, 0);
- if (res != ERROR_OK)
- return res;
-
- return ERROR_OK;
- }
-
- /** */
- int stlink_usb_debug_mode_leave(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;
- h->txbuf[1] = STLINK_DEBUG_EXIT;
-
- res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, 0, 0);
- if (res != ERROR_OK)
- return res;
-
- return ERROR_OK;
- }
-
- /** */
- int stlink_usb_init_mode(void *handle)
- {
- int res;
- uint8_t mode;
-
- assert(handle != NULL);
-
- res = stlink_usb_current_mode(handle, &mode);
-
- if (res != ERROR_OK)
- return res;
-
- LOG_DEBUG("MODE: %02X", mode);
-
- if (mode == STLINK_DEV_DFU_MODE) {
- res = stlink_usb_dfu_mode_leave(handle);
-
- if (res != ERROR_OK)
- return res;
- }
-
- res = stlink_usb_current_mode(handle, &mode);
-
- if (res != ERROR_OK)
- return res;
-
- LOG_DEBUG("MODE: %02X", mode);
-
- if (mode != STLINK_DEV_DEBUG_MODE) {
- res = stlink_usb_swd_mode_enter(handle);
-
- 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;
- }
-
- /** */
- 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;
- }
-
- /** */
- 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;
-
- 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;
- }
-
- /** */
- 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;
- h->txbuf[1] = STLINK_DEBUG_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;
- }
-
- /** */
- int stlink_usb_run(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;
- 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;
- }
-
- /** */
- int stlink_usb_halt(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;
- 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;
- }
-
- /** */
- int stlink_usb_step(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;
- 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;
- }
-
- /** */
- 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;
- h->txbuf[1] = STLINK_DEBUG_READALLREGS;
-
- res = stlink_usb_recv(handle, h->txbuf, STLINK_CMD_SIZE, h->rxbuf, 84);
-
- if (res != ERROR_OK)
- return res;
-
- return ERROR_OK;
- }
-
- /** */
- 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;
- h->txbuf[1] = STLINK_DEBUG_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;
- }
-
- /** */
- 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;
- h->txbuf[1] = STLINK_DEBUG_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;
- }
-
- /** */
- 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;
- }
-
- /** */
- int stlink_usb_write_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_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;
-
- memcpy(buffer, h->rxbuf, len);
-
- return ERROR_OK;
- }
-
- /** */
- int stlink_usb_open(struct stlink_interface_param_s *param, void **fd)
- {
- struct stlink_usb_handle_s *h;
-
- LOG_DEBUG("stlink_usb_open");
-
- h = malloc(sizeof(struct stlink_usb_handle_s));
-
- if (h == 0) {
- LOG_DEBUG("stlink_open_usb: malloc failed");
- return ERROR_FAIL;
- }
-
- const uint16_t vids[] = { param->vid, 0 };
- const uint16_t pids[] = { param->pid, 0 };
-
- LOG_DEBUG("stlink_open_usb: vid: %04x pid: %04x", param->vid,
- param->pid);
-
- if (jtag_libusb_open(vids, pids, &h->fd) != ERROR_OK) {
- LOG_DEBUG("stlink_open_usb: open failed");
- return ERROR_FAIL;
- }
-
- jtag_libusb_set_configuration(h->fd, 0);
-
- if (jtag_libusb_claim_interface(h->fd, 0) != ERROR_OK) {
- LOG_DEBUG("stlink_open_usb: claim failed");
- return ERROR_FAIL;
- }
-
- stlink_usb_init_mode(h);
-
- stlink_usb_version(h);
-
- *fd = h;
-
- return ERROR_OK;
- }
-
- /** */
- struct stlink_layout_api_s stlink_layout_api = {
- /** */
- .open = stlink_usb_open,
- /** */
- .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_mem32 = stlink_usb_read_mem32,
- /** */
- .write_mem32 = stlink_usb_write_mem32,
- };
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