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- /***************************************************************************
- * Copyright (C) 2021 by Adrian Negreanu *
- * groleo@gmail.com *
- * *
- * Copyright (C) 2018 by Mickaël Thomas *
- * mickael9@gmail.com *
- * *
- * Copyright (C) 2016 by Maksym Hilliaka *
- * oter@frozen-team.com *
- * *
- * Copyright (C) 2016 by Phillip Pearson *
- * pp@myelin.co.nz *
- * *
- * Copyright (C) 2014 by Paul Fertser *
- * fercerpav@gmail.com *
- * *
- * Copyright (C) 2013 by mike brown *
- * mike@theshedworks.org.uk *
- * *
- * Copyright (C) 2013 by Spencer Oliver *
- * spen@spen-soft.co.uk *
- * *
- * 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, see <http://www.gnu.org/licenses/>. *
- ***************************************************************************/
-
- #ifdef HAVE_CONFIG_H
- #include "config.h"
- #endif
-
- #include <transport/transport.h>
- #include "helper/replacements.h"
- #include <jtag/swd.h>
- #include <jtag/interface.h>
- #include <jtag/commands.h>
- #include <jtag/tcl.h>
- #include <target/cortex_m.h>
-
- #include "cmsis_dap.h"
-
- static const struct cmsis_dap_backend *const cmsis_dap_backends[] = {
- #if BUILD_CMSIS_DAP_USB == 1
- &cmsis_dap_usb_backend,
- #endif
-
- #if BUILD_CMSIS_DAP_HID == 1
- &cmsis_dap_hid_backend,
- #endif
- };
-
- /* USB Config */
-
- /* Known vid/pid pairs:
- * VID 0xc251: Keil Software
- * PID 0xf001: LPC-Link-II CMSIS_DAP
- * PID 0xf002: OPEN-SDA CMSIS_DAP (Freedom Board)
- * PID 0x2722: Keil ULINK2 CMSIS-DAP
- * PID 0x2750: Keil ULINKplus CMSIS-DAP
- *
- * VID 0x0d28: mbed Software
- * PID 0x0204: MBED CMSIS-DAP
- */
-
- #define MAX_USB_IDS 8
- /* vid = pid = 0 marks the end of the list */
- static uint16_t cmsis_dap_vid[MAX_USB_IDS + 1] = { 0 };
- static uint16_t cmsis_dap_pid[MAX_USB_IDS + 1] = { 0 };
- static char *cmsis_dap_serial;
- static int cmsis_dap_backend = -1;
- static bool swd_mode;
-
- #define USB_TIMEOUT 1000
-
- /* CMSIS-DAP General Commands */
- #define CMD_DAP_INFO 0x00
- #define CMD_DAP_LED 0x01
- #define CMD_DAP_CONNECT 0x02
- #define CMD_DAP_DISCONNECT 0x03
- #define CMD_DAP_WRITE_ABORT 0x08
- #define CMD_DAP_DELAY 0x09
- #define CMD_DAP_RESET_TARGET 0x0A
-
- /* CMD_INFO */
- #define INFO_ID_VENDOR 0x01 /* string */
- #define INFO_ID_PRODUCT 0x02 /* string */
- #define INFO_ID_SERNUM 0x03 /* string */
- #define INFO_ID_FW_VER 0x04 /* string */
- #define INFO_ID_TD_VEND 0x05 /* string */
- #define INFO_ID_TD_NAME 0x06 /* string */
- #define INFO_ID_CAPS 0xf0 /* byte */
- #define INFO_ID_PKT_CNT 0xfe /* byte */
- #define INFO_ID_PKT_SZ 0xff /* short */
- #define INFO_ID_SWO_BUF_SZ 0xfd /* word */
-
- #define INFO_CAPS_SWD BIT(0)
- #define INFO_CAPS_JTAG BIT(1)
- #define INFO_CAPS_SWO_UART BIT(2)
- #define INFO_CAPS_SWO_MANCHESTER BIT(3)
-
- /* CMD_LED */
- #define LED_ID_CONNECT 0x00
- #define LED_ID_RUN 0x01
-
- #define LED_OFF 0x00
- #define LED_ON 0x01
-
- /* CMD_CONNECT */
- #define CONNECT_DEFAULT 0x00
- #define CONNECT_SWD 0x01
- #define CONNECT_JTAG 0x02
-
- /* CMSIS-DAP Common SWD/JTAG Commands */
- #define CMD_DAP_DELAY 0x09
- #define CMD_DAP_SWJ_PINS 0x10
- #define CMD_DAP_SWJ_CLOCK 0x11
- #define CMD_DAP_SWJ_SEQ 0x12
-
- /*
- * PINS
- * Bit 0: SWCLK/TCK
- * Bit 1: SWDIO/TMS
- * Bit 2: TDI
- * Bit 3: TDO
- * Bit 5: nTRST
- * Bit 7: nRESET
- */
-
- #define SWJ_PIN_TCK (1<<0)
- #define SWJ_PIN_TMS (1<<1)
- #define SWJ_PIN_TDI (1<<2)
- #define SWJ_PIN_TDO (1<<3)
- #define SWJ_PIN_TRST (1<<5)
- #define SWJ_PIN_SRST (1<<7)
-
- /* CMSIS-DAP SWD Commands */
- #define CMD_DAP_SWD_CONFIGURE 0x13
- #define CMD_DAP_SWD_SEQUENCE 0x1D
-
- /* CMSIS-DAP JTAG Commands */
- #define CMD_DAP_JTAG_SEQ 0x14
- #define CMD_DAP_JTAG_CONFIGURE 0x15
- #define CMD_DAP_JTAG_IDCODE 0x16
-
- /* CMSIS-DAP JTAG sequence info masks */
- /* Number of bits to clock through (0 means 64) */
- #define DAP_JTAG_SEQ_TCK 0x3F
- /* TMS will be set during the sequence if this bit is set */
- #define DAP_JTAG_SEQ_TMS 0x40
- /* TDO output will be captured if this bit is set */
- #define DAP_JTAG_SEQ_TDO 0x80
-
-
- /* CMSIS-DAP Transfer Commands */
- #define CMD_DAP_TFER_CONFIGURE 0x04
- #define CMD_DAP_TFER 0x05
- #define CMD_DAP_TFER_BLOCK 0x06
- #define CMD_DAP_TFER_ABORT 0x07
-
- /* DAP Status Code */
- #define DAP_OK 0
- #define DAP_ERROR 0xFF
-
- /* CMSIS-DAP SWO Commands */
- #define CMD_DAP_SWO_TRANSPORT 0x17
- #define CMD_DAP_SWO_MODE 0x18
- #define CMD_DAP_SWO_BAUDRATE 0x19
- #define CMD_DAP_SWO_CONTROL 0x1A
- #define CMD_DAP_SWO_STATUS 0x1B
- #define CMD_DAP_SWO_DATA 0x1C
- #define CMD_DAP_SWO_EX_STATUS 0x1E
-
- /* SWO transport mode for reading trace data */
- #define DAP_SWO_TRANSPORT_NONE 0
- #define DAP_SWO_TRANSPORT_DATA 1
- #define DAP_SWO_TRANSPORT_WINUSB 2
-
- /* SWO trace capture mode */
- #define DAP_SWO_MODE_OFF 0
- #define DAP_SWO_MODE_UART 1
- #define DAP_SWO_MODE_MANCHESTER 2
-
- /* SWO trace data capture */
- #define DAP_SWO_CONTROL_STOP 0
- #define DAP_SWO_CONTROL_START 1
-
- /* SWO trace status */
- #define DAP_SWO_STATUS_CAPTURE_INACTIVE 0
- #define DAP_SWO_STATUS_CAPTURE_ACTIVE 1
- #define DAP_SWO_STATUS_CAPTURE_MASK BIT(0)
- #define DAP_SWO_STATUS_STREAM_ERROR_MASK BIT(6)
- #define DAP_SWO_STATUS_BUFFER_OVERRUN_MASK BIT(7)
-
- /* CMSIS-DAP Vendor Commands
- * None as yet... */
-
- static const char * const info_caps_str[] = {
- "SWD Supported",
- "JTAG Supported",
- "SWO-UART Supported",
- "SWO-MANCHESTER Supported"
- };
-
- struct pending_transfer_result {
- uint8_t cmd;
- uint32_t data;
- void *buffer;
- };
-
- struct pending_request_block {
- struct pending_transfer_result *transfers;
- int transfer_count;
- };
-
- struct pending_scan_result {
- /** Offset in bytes in the CMD_DAP_JTAG_SEQ response buffer. */
- unsigned first;
- /** Number of bits to read. */
- unsigned length;
- /** Location to store the result */
- uint8_t *buffer;
- /** Offset in the destination buffer */
- unsigned buffer_offset;
- };
-
- /* Up to MIN(packet_count, MAX_PENDING_REQUESTS) requests may be issued
- * until the first response arrives */
- #define MAX_PENDING_REQUESTS 3
-
- /* Pending requests are organized as a FIFO - circular buffer */
- /* Each block in FIFO can contain up to pending_queue_len transfers */
- static int pending_queue_len;
- static struct pending_request_block pending_fifo[MAX_PENDING_REQUESTS];
- static int pending_fifo_put_idx, pending_fifo_get_idx;
- static int pending_fifo_block_count;
-
- /* pointers to buffers that will receive jtag scan results on the next flush */
- #define MAX_PENDING_SCAN_RESULTS 256
- static int pending_scan_result_count;
- static struct pending_scan_result pending_scan_results[MAX_PENDING_SCAN_RESULTS];
-
- /* queued JTAG sequences that will be executed on the next flush */
- #define QUEUED_SEQ_BUF_LEN (cmsis_dap_handle->packet_size - 3)
- static int queued_seq_count;
- static int queued_seq_buf_end;
- static int queued_seq_tdo_ptr;
- static uint8_t queued_seq_buf[1024]; /* TODO: make dynamic / move into cmsis object */
-
- static int queued_retval;
-
- static uint8_t output_pins = SWJ_PIN_SRST | SWJ_PIN_TRST;
-
- static struct cmsis_dap *cmsis_dap_handle;
-
-
- static int cmsis_dap_quit(void);
-
- static int cmsis_dap_open(void)
- {
- const struct cmsis_dap_backend *backend = NULL;
-
- struct cmsis_dap *dap = calloc(1, sizeof(struct cmsis_dap));
- if (!dap) {
- LOG_ERROR("unable to allocate memory");
- return ERROR_FAIL;
- }
-
- if (cmsis_dap_backend >= 0) {
- /* Use forced backend */
- backend = cmsis_dap_backends[cmsis_dap_backend];
- if (backend->open(dap, cmsis_dap_vid, cmsis_dap_pid, cmsis_dap_serial) != ERROR_OK)
- backend = NULL;
- } else {
- /* Try all backends */
- for (unsigned int i = 0; i < ARRAY_SIZE(cmsis_dap_backends); i++) {
- backend = cmsis_dap_backends[i];
- if (backend->open(dap, cmsis_dap_vid, cmsis_dap_pid, cmsis_dap_serial) == ERROR_OK)
- break;
- else
- backend = NULL;
- }
- }
-
- if (!backend) {
- LOG_ERROR("unable to find a matching CMSIS-DAP device");
- free(dap);
- return ERROR_FAIL;
- }
-
- dap->backend = backend;
-
- cmsis_dap_handle = dap;
-
- return ERROR_OK;
- }
-
- static void cmsis_dap_close(struct cmsis_dap *dap)
- {
- if (dap->backend) {
- dap->backend->close(dap);
- dap->backend = NULL;
- }
-
- free(cmsis_dap_handle->packet_buffer);
- free(cmsis_dap_handle);
- cmsis_dap_handle = NULL;
- free(cmsis_dap_serial);
- cmsis_dap_serial = NULL;
-
- for (int i = 0; i < MAX_PENDING_REQUESTS; i++) {
- free(pending_fifo[i].transfers);
- pending_fifo[i].transfers = NULL;
- }
- }
-
- static void cmsis_dap_flush_read(struct cmsis_dap *dap)
- {
- unsigned int i;
- /* Some CMSIS-DAP adapters keep buffered packets over
- * USB close/open so we need to flush up to 64 old packets
- * to be sure all buffers are empty */
- for (i = 0; i < 64; i++) {
- int retval = dap->backend->read(dap, 10);
- if (retval == ERROR_TIMEOUT_REACHED)
- break;
- }
- if (i)
- LOG_DEBUG("Flushed %u packets", i);
- }
-
- /* Send a message and receive the reply */
- static int cmsis_dap_xfer(struct cmsis_dap *dap, int txlen)
- {
- if (pending_fifo_block_count) {
- LOG_ERROR("pending %d blocks, flushing", pending_fifo_block_count);
- while (pending_fifo_block_count) {
- dap->backend->read(dap, 10);
- pending_fifo_block_count--;
- }
- pending_fifo_put_idx = 0;
- pending_fifo_get_idx = 0;
- }
-
- uint8_t current_cmd = cmsis_dap_handle->command[0];
- int retval = dap->backend->write(dap, txlen, USB_TIMEOUT);
- if (retval < 0)
- return retval;
-
- /* get reply */
- retval = dap->backend->read(dap, USB_TIMEOUT);
- if (retval < 0)
- return retval;
-
- uint8_t *resp = cmsis_dap_handle->response;
- if (resp[0] == DAP_ERROR) {
- LOG_ERROR("CMSIS-DAP command 0x%" PRIx8 " not implemented", current_cmd);
- return ERROR_NOT_IMPLEMENTED;
- }
-
- if (resp[0] != current_cmd) {
- LOG_ERROR("CMSIS-DAP command mismatch. Sent 0x%" PRIx8
- " received 0x%" PRIx8, current_cmd, resp[0]);
-
- cmsis_dap_flush_read(dap);
- return ERROR_FAIL;
- }
-
- return ERROR_OK;
- }
-
- static int cmsis_dap_cmd_dap_swj_pins(uint8_t pins, uint8_t mask, uint32_t delay, uint8_t *input)
- {
- uint8_t *command = cmsis_dap_handle->command;
-
- command[0] = CMD_DAP_SWJ_PINS;
- command[1] = pins;
- command[2] = mask;
- h_u32_to_le(&command[3], delay);
-
- int retval = cmsis_dap_xfer(cmsis_dap_handle, 7);
- if (retval != ERROR_OK) {
- LOG_ERROR("CMSIS-DAP command CMD_DAP_SWJ_PINS failed.");
- return ERROR_JTAG_DEVICE_ERROR;
- }
-
- if (input)
- *input = cmsis_dap_handle->response[1];
-
- return ERROR_OK;
- }
-
- static int cmsis_dap_cmd_dap_swj_clock(uint32_t swj_clock)
- {
- uint8_t *command = cmsis_dap_handle->command;
-
- /* set clock in Hz */
- swj_clock *= 1000;
-
- command[0] = CMD_DAP_SWJ_CLOCK;
- h_u32_to_le(&command[1], swj_clock);
-
- int retval = cmsis_dap_xfer(cmsis_dap_handle, 5);
- if (retval != ERROR_OK || cmsis_dap_handle->response[1] != DAP_OK) {
- LOG_ERROR("CMSIS-DAP command CMD_DAP_SWJ_CLOCK failed.");
- return ERROR_JTAG_DEVICE_ERROR;
- }
-
- return ERROR_OK;
- }
-
- /* clock a sequence of bits out on TMS, to change JTAG states */
- static int cmsis_dap_cmd_dap_swj_sequence(uint8_t s_len, const uint8_t *sequence)
- {
- uint8_t *command = cmsis_dap_handle->command;
-
- #ifdef CMSIS_DAP_JTAG_DEBUG
- LOG_DEBUG("cmsis-dap TMS sequence: len=%d", s_len);
- for (int i = 0; i < DIV_ROUND_UP(s_len, 8); ++i)
- printf("%02X ", sequence[i]);
-
- printf("\n");
- #endif
-
- command[0] = CMD_DAP_SWJ_SEQ;
- command[1] = s_len;
- bit_copy(&command[2], 0, sequence, 0, s_len);
-
- int retval = cmsis_dap_xfer(cmsis_dap_handle, 2 + DIV_ROUND_UP(s_len, 8));
- if (retval != ERROR_OK || cmsis_dap_handle->response[1] != DAP_OK)
- return ERROR_FAIL;
-
- return ERROR_OK;
- }
-
- static int cmsis_dap_cmd_dap_info(uint8_t info, uint8_t **data)
- {
- uint8_t *command = cmsis_dap_handle->command;
-
- command[0] = CMD_DAP_INFO;
- command[1] = info;
-
- int retval = cmsis_dap_xfer(cmsis_dap_handle, 2);
- if (retval != ERROR_OK) {
- LOG_ERROR("CMSIS-DAP command CMD_INFO failed.");
- return ERROR_JTAG_DEVICE_ERROR;
- }
-
- *data = &cmsis_dap_handle->response[1];
-
- return ERROR_OK;
- }
-
- static int cmsis_dap_cmd_dap_led(uint8_t led, uint8_t state)
- {
- uint8_t *command = cmsis_dap_handle->command;
-
- command[0] = CMD_DAP_LED;
- command[1] = led;
- command[2] = state;
-
- int retval = cmsis_dap_xfer(cmsis_dap_handle, 3);
- if (retval != ERROR_OK || cmsis_dap_handle->response[1] != DAP_OK) {
- LOG_ERROR("CMSIS-DAP command CMD_LED failed.");
- return ERROR_JTAG_DEVICE_ERROR;
- }
-
- return ERROR_OK;
- }
-
- static int cmsis_dap_cmd_dap_connect(uint8_t mode)
- {
- uint8_t *command = cmsis_dap_handle->command;
-
- command[0] = CMD_DAP_CONNECT;
- command[1] = mode;
-
- int retval = cmsis_dap_xfer(cmsis_dap_handle, 2);
- if (retval != ERROR_OK) {
- LOG_ERROR("CMSIS-DAP command CMD_CONNECT failed.");
- return ERROR_JTAG_DEVICE_ERROR;
- }
-
- if (cmsis_dap_handle->response[1] != mode) {
- LOG_ERROR("CMSIS-DAP failed to connect in mode (%d)", mode);
- return ERROR_JTAG_DEVICE_ERROR;
- }
-
- return ERROR_OK;
- }
-
- static int cmsis_dap_cmd_dap_disconnect(void)
- {
- uint8_t *command = cmsis_dap_handle->command;
-
- command[0] = CMD_DAP_DISCONNECT;
-
- int retval = cmsis_dap_xfer(cmsis_dap_handle, 1);
- if (retval != ERROR_OK || cmsis_dap_handle->response[1] != DAP_OK) {
- LOG_ERROR("CMSIS-DAP command CMD_DISCONNECT failed.");
- return ERROR_JTAG_DEVICE_ERROR;
- }
-
- return ERROR_OK;
- }
-
- static int cmsis_dap_cmd_dap_tfer_configure(uint8_t idle, uint16_t retry_count, uint16_t match_retry)
- {
- uint8_t *command = cmsis_dap_handle->command;
-
- command[0] = CMD_DAP_TFER_CONFIGURE;
- command[1] = idle;
- h_u16_to_le(&command[2], retry_count);
- h_u16_to_le(&command[4], match_retry);
-
- int retval = cmsis_dap_xfer(cmsis_dap_handle, 6);
- if (retval != ERROR_OK || cmsis_dap_handle->response[1] != DAP_OK) {
- LOG_ERROR("CMSIS-DAP command CMD_TFER_Configure failed.");
- return ERROR_JTAG_DEVICE_ERROR;
- }
-
- return ERROR_OK;
- }
-
- static int cmsis_dap_cmd_dap_swd_configure(uint8_t cfg)
- {
- uint8_t *command = cmsis_dap_handle->command;
-
- command[0] = CMD_DAP_SWD_CONFIGURE;
- command[1] = cfg;
-
- int retval = cmsis_dap_xfer(cmsis_dap_handle, 2);
- if (retval != ERROR_OK || cmsis_dap_handle->response[1] != DAP_OK) {
- LOG_ERROR("CMSIS-DAP command CMD_SWD_Configure failed.");
- return ERROR_JTAG_DEVICE_ERROR;
- }
-
- return ERROR_OK;
- }
-
- #if 0
- static int cmsis_dap_cmd_dap_delay(uint16_t delay_us)
- {
- uint8_t *command = cmsis_dap_handle->command;
-
- command[0] = CMD_DAP_DELAY;
- h_u16_to_le(&command[1], delay_us);
-
- int retval = cmsis_dap_xfer(cmsis_dap_handle, 3);
- if (retval != ERROR_OK || cmsis_dap_handle->response[1] != DAP_OK) {
- LOG_ERROR("CMSIS-DAP command CMD_Delay failed.");
- return ERROR_JTAG_DEVICE_ERROR;
- }
-
- return ERROR_OK;
- }
- #endif
-
- static int cmsis_dap_metacmd_targetsel(uint32_t instance_id)
- {
- uint8_t *command = cmsis_dap_handle->command;
- const uint32_t SEQ_RD = 0x80, SEQ_WR = 0x00;
-
- /* SWD multi-drop requires a transfer ala CMD_DAP_TFER,
- but with no expectation of an SWD ACK response. In
- CMSIS-DAP v1.20 and v2.00, CMD_DAP_SWD_SEQUENCE was
- added to allow this special sequence to be generated.
- The purpose of this operation is to select the target
- corresponding to the instance_id that is written */
-
- size_t idx = 0;
- command[idx++] = CMD_DAP_SWD_SEQUENCE;
- command[idx++] = 3; /* sequence count */
-
- /* sequence 0: packet request for TARGETSEL */
- command[idx++] = SEQ_WR | 8;
- command[idx++] = SWD_CMD_START | swd_cmd(false, false, DP_TARGETSEL) | SWD_CMD_STOP | SWD_CMD_PARK;
-
- /* sequence 1: read Trn ACK Trn, no expectation for target to ACK */
- command[idx++] = SEQ_RD | 5;
-
- /* sequence 2: WDATA plus parity */
- command[idx++] = SEQ_WR | (32 + 1);
- h_u32_to_le(command + idx, instance_id);
- idx += 4;
- command[idx++] = parity_u32(instance_id);
-
- int retval = cmsis_dap_xfer(cmsis_dap_handle, idx);
- if (retval != ERROR_OK || cmsis_dap_handle->response[1] != DAP_OK) {
- LOG_ERROR("CMSIS-DAP command SWD_Sequence failed.");
- return ERROR_JTAG_DEVICE_ERROR;
- }
-
- return ERROR_OK;
- }
-
- /**
- * Sets the SWO transport mode.
- * @param[in] transport The transport mode. Can be None, SWO_Data or
- * WinUSB (requires CMSIS-DAP v2).
- */
- static int cmsis_dap_cmd_dap_swo_transport(uint8_t transport)
- {
- uint8_t *command = cmsis_dap_handle->command;
-
- command[0] = CMD_DAP_SWO_TRANSPORT;
- command[1] = transport;
-
- int retval = cmsis_dap_xfer(cmsis_dap_handle, 2);
- if (retval != ERROR_OK || cmsis_dap_handle->response[1] != DAP_OK) {
- LOG_ERROR("CMSIS-DAP: command CMD_SWO_Transport(%d) failed.", transport);
- return ERROR_JTAG_DEVICE_ERROR;
- }
-
- return ERROR_OK;
- }
-
- /**
- * Sets the SWO trace capture mode.
- * @param[in] mode Trace capture mode. Can be UART or MANCHESTER.
- */
- static int cmsis_dap_cmd_dap_swo_mode(uint8_t mode)
- {
- uint8_t *command = cmsis_dap_handle->command;
-
- command[0] = CMD_DAP_SWO_MODE;
- command[1] = mode;
-
- int retval = cmsis_dap_xfer(cmsis_dap_handle, 2);
- if (retval != ERROR_OK || cmsis_dap_handle->response[1] != DAP_OK) {
- LOG_ERROR("CMSIS-DAP: command CMD_SWO_Mode(%d) failed.", mode);
- return ERROR_JTAG_DEVICE_ERROR;
- }
-
- return ERROR_OK;
- }
-
- /**
- * Sets the baudrate for capturing SWO trace data.
- * Can be called iteratively to determine supported baudrates.
- * @param[in] in_baudrate Requested baudrate.
- * @param[out] dev_baudrate Actual baudrate or 0 (baudrate not configured).
- * When requested baudrate is not achievable the
- * closest configured baudrate can be returned or
- * 0 which indicates that baudrate was not configured.
- */
- static int cmsis_dap_cmd_dap_swo_baudrate(
- uint32_t in_baudrate,
- uint32_t *dev_baudrate)
- {
- uint8_t *command = cmsis_dap_handle->command;
-
- command[0] = CMD_DAP_SWO_BAUDRATE;
- h_u32_to_le(&command[1], in_baudrate);
-
- int retval = cmsis_dap_xfer(cmsis_dap_handle, 4);
- uint32_t rvbr = le_to_h_u32(&cmsis_dap_handle->response[1]);
- if (retval != ERROR_OK || rvbr == 0) {
- LOG_ERROR("CMSIS-DAP: command CMD_SWO_Baudrate(%u) -> %u failed.", in_baudrate, rvbr);
- if (dev_baudrate)
- *dev_baudrate = 0;
- return ERROR_JTAG_DEVICE_ERROR;
- }
-
- if (dev_baudrate)
- *dev_baudrate = rvbr;
-
- return ERROR_OK;
- }
-
- /**
- * Controls the SWO trace data capture.
- * @param[in] control Start or stop a trace. Starting capture automatically
- * flushes any existing trace data in buffers which has
- * not yet been read.
- */
- static int cmsis_dap_cmd_dap_swo_control(uint8_t control)
- {
- uint8_t *command = cmsis_dap_handle->command;
-
- command[0] = CMD_DAP_SWO_CONTROL;
- command[1] = control;
-
- int retval = cmsis_dap_xfer(cmsis_dap_handle, 2);
- if (retval != ERROR_OK || cmsis_dap_handle->response[1] != DAP_OK) {
- LOG_ERROR("CMSIS-DAP: command CMD_SWO_Control(%d) failed.", control);
- return ERROR_JTAG_DEVICE_ERROR;
- }
-
- return ERROR_OK;
- }
-
- /**
- * Reads the SWO trace status.
- * @param[out] trace_status The trace's status.
- * Bit0: Trace Capture (1 - active, 0 - inactive).
- * Bit6: Trace Stream Error.
- * Bit7: Trace Buffer Overrun.
- * @param[out] trace_count Number of bytes in Trace Buffer (not yet read).
- */
- static int cmsis_dap_cmd_dap_swo_status(
- uint8_t *trace_status,
- size_t *trace_count)
- {
- uint8_t *command = cmsis_dap_handle->command;
-
- command[0] = CMD_DAP_SWO_STATUS;
-
- int retval = cmsis_dap_xfer(cmsis_dap_handle, 1);
- if (retval != ERROR_OK) {
- LOG_ERROR("CMSIS-DAP: command CMD_SWO_Status failed.");
- return ERROR_JTAG_DEVICE_ERROR;
- }
-
- if (trace_status)
- *trace_status = cmsis_dap_handle->response[1];
- if (trace_count)
- *trace_count = le_to_h_u32(&cmsis_dap_handle->response[2]);
-
- return ERROR_OK;
- }
-
- /**
- * Reads the captured SWO trace data from Trace Buffer.
- * @param[in] max_trace_count Maximum number of Trace Data bytes to read.
- * @param[out] trace_status The trace's status.
- * @param[out] trace_count Number of Trace Data bytes read.
- * @param[out] data Trace Data bytes read.
- */
- static int cmsis_dap_cmd_dap_swo_data(
- size_t max_trace_count,
- uint8_t *trace_status,
- size_t *trace_count,
- uint8_t *data)
- {
- uint8_t *command = cmsis_dap_handle->command;
-
- command[0] = CMD_DAP_SWO_DATA;
- h_u16_to_le(&command[1], max_trace_count);
-
- int retval = cmsis_dap_xfer(cmsis_dap_handle, 3);
- if (retval != ERROR_OK) {
- LOG_ERROR("CMSIS-DAP: command CMD_SWO_Data failed.");
- return ERROR_JTAG_DEVICE_ERROR;
- }
-
- *trace_status = cmsis_dap_handle->response[1];
- *trace_count = le_to_h_u16(&cmsis_dap_handle->response[2]);
-
- if (*trace_count > 0)
- memcpy(data, &cmsis_dap_handle->response[4], *trace_count);
-
- return ERROR_OK;
- }
-
- static void cmsis_dap_swd_write_from_queue(struct cmsis_dap *dap)
- {
- uint8_t *command = cmsis_dap_handle->command;
- struct pending_request_block *block = &pending_fifo[pending_fifo_put_idx];
-
- LOG_DEBUG_IO("Executing %d queued transactions from FIFO index %d", block->transfer_count, pending_fifo_put_idx);
-
- if (queued_retval != ERROR_OK) {
- LOG_DEBUG("Skipping due to previous errors: %d", queued_retval);
- goto skip;
- }
-
- if (block->transfer_count == 0)
- goto skip;
-
- command[0] = CMD_DAP_TFER;
- command[1] = 0x00; /* DAP Index */
- command[2] = block->transfer_count;
- size_t idx = 3;
-
- for (int i = 0; i < block->transfer_count; i++) {
- struct pending_transfer_result *transfer = &(block->transfers[i]);
- uint8_t cmd = transfer->cmd;
- uint32_t data = transfer->data;
-
- LOG_DEBUG_IO("%s %s reg %x %"PRIx32,
- cmd & SWD_CMD_APNDP ? "AP" : "DP",
- cmd & SWD_CMD_RNW ? "read" : "write",
- (cmd & SWD_CMD_A32) >> 1, data);
-
- /* When proper WAIT handling is implemented in the
- * common SWD framework, this kludge can be
- * removed. However, this might lead to minor
- * performance degradation as the adapter wouldn't be
- * able to automatically retry anything (because ARM
- * has forgotten to implement sticky error flags
- * clearing). See also comments regarding
- * cmsis_dap_cmd_dap_tfer_configure() and
- * cmsis_dap_cmd_dap_swd_configure() in
- * cmsis_dap_init().
- */
- if (!(cmd & SWD_CMD_RNW) &&
- !(cmd & SWD_CMD_APNDP) &&
- (cmd & SWD_CMD_A32) >> 1 == DP_CTRL_STAT &&
- (data & CORUNDETECT)) {
- LOG_DEBUG("refusing to enable sticky overrun detection");
- data &= ~CORUNDETECT;
- }
-
- command[idx++] = (cmd >> 1) & 0x0f;
- if (!(cmd & SWD_CMD_RNW)) {
- h_u32_to_le(&command[idx], data);
- idx += 4;
- }
- }
-
- int retval = dap->backend->write(dap, idx, USB_TIMEOUT);
- if (retval < 0) {
- queued_retval = retval;
- goto skip;
- } else {
- queued_retval = ERROR_OK;
- }
-
- pending_fifo_put_idx = (pending_fifo_put_idx + 1) % dap->packet_count;
- pending_fifo_block_count++;
- if (pending_fifo_block_count > dap->packet_count)
- LOG_ERROR("too much pending writes %d", pending_fifo_block_count);
-
- return;
-
- skip:
- block->transfer_count = 0;
- }
-
- static void cmsis_dap_swd_read_process(struct cmsis_dap *dap, int timeout_ms)
- {
- struct pending_request_block *block = &pending_fifo[pending_fifo_get_idx];
-
- if (pending_fifo_block_count == 0)
- LOG_ERROR("no pending write");
-
- /* get reply */
- int retval = dap->backend->read(dap, timeout_ms);
- if (retval == ERROR_TIMEOUT_REACHED && timeout_ms < USB_TIMEOUT)
- return;
-
- if (retval <= 0) {
- LOG_DEBUG("error reading data");
- queued_retval = ERROR_FAIL;
- goto skip;
- }
-
- uint8_t *resp = dap->response;
- if (resp[0] != CMD_DAP_TFER) {
- LOG_ERROR("CMSIS-DAP command mismatch. Expected 0x%x received 0x%" PRIx8,
- CMD_DAP_TFER, resp[0]);
- queued_retval = ERROR_FAIL;
- goto skip;
- }
-
- uint8_t transfer_count = resp[1];
- uint8_t ack = resp[2] & 0x07;
- if (resp[2] & 0x08) {
- LOG_DEBUG("CMSIS-DAP Protocol Error @ %d (wrong parity)", transfer_count);
- queued_retval = ERROR_FAIL;
- goto skip;
- }
- if (ack != SWD_ACK_OK) {
- LOG_DEBUG("SWD ack not OK @ %d %s", transfer_count,
- ack == SWD_ACK_WAIT ? "WAIT" : ack == SWD_ACK_FAULT ? "FAULT" : "JUNK");
- queued_retval = ack == SWD_ACK_WAIT ? ERROR_WAIT : ERROR_FAIL;
- /* TODO: use results of transfers completed before the error occurred? */
- goto skip;
- }
-
- if (block->transfer_count != transfer_count)
- LOG_ERROR("CMSIS-DAP transfer count mismatch: expected %d, got %d",
- block->transfer_count, transfer_count);
-
- LOG_DEBUG_IO("Received results of %d queued transactions FIFO index %d",
- transfer_count, pending_fifo_get_idx);
- size_t idx = 3;
- for (int i = 0; i < transfer_count; i++) {
- struct pending_transfer_result *transfer = &(block->transfers[i]);
- if (transfer->cmd & SWD_CMD_RNW) {
- static uint32_t last_read;
- uint32_t data = le_to_h_u32(&resp[idx]);
- uint32_t tmp = data;
- idx += 4;
-
- LOG_DEBUG_IO("Read result: %"PRIx32, data);
-
- /* Imitate posted AP reads */
- if ((transfer->cmd & SWD_CMD_APNDP) ||
- ((transfer->cmd & SWD_CMD_A32) >> 1 == DP_RDBUFF)) {
- tmp = last_read;
- last_read = data;
- }
-
- if (transfer->buffer)
- *(uint32_t *)(transfer->buffer) = tmp;
- }
- }
-
- skip:
- block->transfer_count = 0;
- pending_fifo_get_idx = (pending_fifo_get_idx + 1) % dap->packet_count;
- pending_fifo_block_count--;
- }
-
- static int cmsis_dap_swd_run_queue(void)
- {
- if (pending_fifo_block_count)
- cmsis_dap_swd_read_process(cmsis_dap_handle, 0);
-
- cmsis_dap_swd_write_from_queue(cmsis_dap_handle);
-
- while (pending_fifo_block_count)
- cmsis_dap_swd_read_process(cmsis_dap_handle, USB_TIMEOUT);
-
- pending_fifo_put_idx = 0;
- pending_fifo_get_idx = 0;
-
- int retval = queued_retval;
- queued_retval = ERROR_OK;
-
- return retval;
- }
-
- static void cmsis_dap_swd_queue_cmd(uint8_t cmd, uint32_t *dst, uint32_t data)
- {
- bool targetsel_cmd = swd_cmd(false, false, DP_TARGETSEL) == cmd;
-
- if (pending_fifo[pending_fifo_put_idx].transfer_count == pending_queue_len
- || targetsel_cmd) {
- if (pending_fifo_block_count)
- cmsis_dap_swd_read_process(cmsis_dap_handle, 0);
-
- /* Not enough room in the queue. Run the queue. */
- cmsis_dap_swd_write_from_queue(cmsis_dap_handle);
-
- if (pending_fifo_block_count >= cmsis_dap_handle->packet_count)
- cmsis_dap_swd_read_process(cmsis_dap_handle, USB_TIMEOUT);
- }
-
- if (queued_retval != ERROR_OK)
- return;
-
- if (targetsel_cmd) {
- cmsis_dap_metacmd_targetsel(data);
- return;
- }
-
- struct pending_request_block *block = &pending_fifo[pending_fifo_put_idx];
- struct pending_transfer_result *transfer = &(block->transfers[block->transfer_count]);
- transfer->data = data;
- transfer->cmd = cmd;
- if (cmd & SWD_CMD_RNW) {
- /* Queue a read transaction */
- transfer->buffer = dst;
- }
- block->transfer_count++;
- }
-
- static void cmsis_dap_swd_write_reg(uint8_t cmd, uint32_t value, uint32_t ap_delay_clk)
- {
- assert(!(cmd & SWD_CMD_RNW));
- cmsis_dap_swd_queue_cmd(cmd, NULL, value);
- }
-
- static void cmsis_dap_swd_read_reg(uint8_t cmd, uint32_t *value, uint32_t ap_delay_clk)
- {
- assert(cmd & SWD_CMD_RNW);
- cmsis_dap_swd_queue_cmd(cmd, value, 0);
- }
-
- static int cmsis_dap_get_serial_info(void)
- {
- uint8_t *data;
-
- int retval = cmsis_dap_cmd_dap_info(INFO_ID_SERNUM, &data);
- if (retval != ERROR_OK)
- return retval;
-
- if (data[0]) /* strlen */
- LOG_INFO("CMSIS-DAP: Serial# = %s", &data[1]);
-
- return ERROR_OK;
- }
-
- static int cmsis_dap_get_version_info(void)
- {
- uint8_t *data;
-
- /* INFO_ID_FW_VER - string */
- int retval = cmsis_dap_cmd_dap_info(INFO_ID_FW_VER, &data);
- if (retval != ERROR_OK)
- return retval;
-
- if (data[0]) /* strlen */
- LOG_INFO("CMSIS-DAP: FW Version = %s", &data[1]);
-
- return ERROR_OK;
- }
-
- static int cmsis_dap_get_caps_info(void)
- {
- uint8_t *data;
-
- /* INFO_ID_CAPS - byte */
- int retval = cmsis_dap_cmd_dap_info(INFO_ID_CAPS, &data);
- if (retval != ERROR_OK)
- return retval;
-
- if (data[0] == 1) {
- uint8_t caps = data[1];
-
- cmsis_dap_handle->caps = caps;
-
- if (caps & INFO_CAPS_SWD)
- LOG_INFO("CMSIS-DAP: %s", info_caps_str[0]);
- if (caps & INFO_CAPS_JTAG)
- LOG_INFO("CMSIS-DAP: %s", info_caps_str[1]);
- if (caps & INFO_CAPS_SWO_UART)
- LOG_INFO("CMSIS-DAP: %s", info_caps_str[2]);
- if (caps & INFO_CAPS_SWO_MANCHESTER)
- LOG_INFO("CMSIS-DAP: %s", info_caps_str[3]);
- }
-
- return ERROR_OK;
- }
-
- static int cmsis_dap_get_swo_buf_sz(uint32_t *swo_buf_sz)
- {
- uint8_t *data;
-
- /* INFO_ID_SWO_BUF_SZ - word */
- int retval = cmsis_dap_cmd_dap_info(INFO_ID_SWO_BUF_SZ, &data);
- if (retval != ERROR_OK)
- return retval;
-
- if (data[0] != 4)
- return ERROR_FAIL;
-
- *swo_buf_sz = le_to_h_u32(&data[1]);
-
- LOG_INFO("CMSIS-DAP: SWO Trace Buffer Size = %u bytes", *swo_buf_sz);
-
- return ERROR_OK;
- }
-
- static int cmsis_dap_get_status(void)
- {
- uint8_t d;
-
- int retval = cmsis_dap_cmd_dap_swj_pins(0, 0, 0, &d);
-
- if (retval == ERROR_OK) {
- LOG_INFO("SWCLK/TCK = %d SWDIO/TMS = %d TDI = %d TDO = %d nTRST = %d nRESET = %d",
- (d & SWJ_PIN_TCK) ? 1 : 0,
- (d & SWJ_PIN_TMS) ? 1 : 0,
- (d & SWJ_PIN_TDI) ? 1 : 0,
- (d & SWJ_PIN_TDO) ? 1 : 0,
- (d & SWJ_PIN_TRST) ? 1 : 0,
- (d & SWJ_PIN_SRST) ? 1 : 0);
- }
-
- return retval;
- }
-
- static int cmsis_dap_swd_switch_seq(enum swd_special_seq seq)
- {
- const uint8_t *s;
- unsigned int s_len;
- int retval;
-
- if ((output_pins & (SWJ_PIN_SRST | SWJ_PIN_TRST)) == (SWJ_PIN_SRST | SWJ_PIN_TRST)) {
- /* Following workaround deasserts reset on most adapters.
- * Do not reconnect if a reset line is active!
- * Reconnecting would break connecting under reset. */
-
- /* First disconnect before connecting, Atmel EDBG needs it for SAMD/R/L/C */
- cmsis_dap_cmd_dap_disconnect();
-
- /* When we are reconnecting, DAP_Connect needs to be rerun, at
- * least on Keil ULINK-ME */
- retval = cmsis_dap_cmd_dap_connect(CONNECT_SWD);
- if (retval != ERROR_OK)
- return retval;
- }
-
- switch (seq) {
- case LINE_RESET:
- LOG_DEBUG_IO("SWD line reset");
- s = swd_seq_line_reset;
- s_len = swd_seq_line_reset_len;
- break;
- case JTAG_TO_SWD:
- LOG_DEBUG("JTAG-to-SWD");
- s = swd_seq_jtag_to_swd;
- s_len = swd_seq_jtag_to_swd_len;
- break;
- case JTAG_TO_DORMANT:
- LOG_DEBUG("JTAG-to-DORMANT");
- s = swd_seq_jtag_to_dormant;
- s_len = swd_seq_jtag_to_dormant_len;
- break;
- case SWD_TO_JTAG:
- LOG_DEBUG("SWD-to-JTAG");
- s = swd_seq_swd_to_jtag;
- s_len = swd_seq_swd_to_jtag_len;
- break;
- case SWD_TO_DORMANT:
- LOG_DEBUG("SWD-to-DORMANT");
- s = swd_seq_swd_to_dormant;
- s_len = swd_seq_swd_to_dormant_len;
- break;
- case DORMANT_TO_SWD:
- LOG_DEBUG("DORMANT-to-SWD");
- s = swd_seq_dormant_to_swd;
- s_len = swd_seq_dormant_to_swd_len;
- break;
- default:
- LOG_ERROR("Sequence %d not supported", seq);
- return ERROR_FAIL;
- }
-
- retval = cmsis_dap_cmd_dap_swj_sequence(s_len, s);
- if (retval != ERROR_OK)
- return retval;
-
- /* Atmel EDBG needs renew clock setting after SWJ_Sequence
- * otherwise default frequency is used */
- return cmsis_dap_cmd_dap_swj_clock(jtag_get_speed_khz());
- }
-
- static int cmsis_dap_swd_open(void)
- {
- if (!(cmsis_dap_handle->caps & INFO_CAPS_SWD)) {
- LOG_ERROR("CMSIS-DAP: SWD not supported");
- return ERROR_JTAG_DEVICE_ERROR;
- }
-
- int retval = cmsis_dap_cmd_dap_connect(CONNECT_SWD);
- if (retval != ERROR_OK)
- return retval;
-
- /* Add more setup here.??... */
-
- LOG_INFO("CMSIS-DAP: Interface Initialised (SWD)");
- return ERROR_OK;
- }
-
- static int cmsis_dap_init(void)
- {
- uint8_t *data;
-
- int retval = cmsis_dap_open();
- if (retval != ERROR_OK)
- return retval;
-
- cmsis_dap_flush_read(cmsis_dap_handle);
-
- retval = cmsis_dap_get_caps_info();
- if (retval != ERROR_OK)
- return retval;
-
- retval = cmsis_dap_get_version_info();
- if (retval != ERROR_OK)
- return retval;
-
- retval = cmsis_dap_get_serial_info();
- if (retval != ERROR_OK)
- return retval;
-
- if (swd_mode) {
- retval = cmsis_dap_swd_open();
- if (retval != ERROR_OK)
- return retval;
- } else {
- /* Connect in JTAG mode */
- if (!(cmsis_dap_handle->caps & INFO_CAPS_JTAG)) {
- LOG_ERROR("CMSIS-DAP: JTAG not supported");
- return ERROR_JTAG_DEVICE_ERROR;
- }
-
- retval = cmsis_dap_cmd_dap_connect(CONNECT_JTAG);
- if (retval != ERROR_OK)
- return retval;
-
- LOG_INFO("CMSIS-DAP: Interface Initialised (JTAG)");
- }
-
- /* Be conservative and suppress submitting multiple HID requests
- * until we get packet count info from the adaptor */
- cmsis_dap_handle->packet_count = 1;
- pending_queue_len = 12;
-
- /* INFO_ID_PKT_SZ - short */
- retval = cmsis_dap_cmd_dap_info(INFO_ID_PKT_SZ, &data);
- if (retval != ERROR_OK)
- goto init_err;
-
- if (data[0] == 2) { /* short */
- uint16_t pkt_sz = data[1] + (data[2] << 8);
- if (pkt_sz != cmsis_dap_handle->packet_size) {
-
- /* 4 bytes of command header + 5 bytes per register
- * write. For bulk read sequences just 4 bytes are
- * needed per transfer, so this is suboptimal. */
- pending_queue_len = (pkt_sz - 4) / 5;
-
- free(cmsis_dap_handle->packet_buffer);
- retval = cmsis_dap_handle->backend->packet_buffer_alloc(cmsis_dap_handle, pkt_sz);
- if (retval != ERROR_OK)
- goto init_err;
-
- LOG_DEBUG("CMSIS-DAP: Packet Size = %" PRIu16, pkt_sz);
- }
- }
-
- /* INFO_ID_PKT_CNT - byte */
- retval = cmsis_dap_cmd_dap_info(INFO_ID_PKT_CNT, &data);
- if (retval != ERROR_OK)
- goto init_err;
-
- if (data[0] == 1) { /* byte */
- int pkt_cnt = data[1];
- if (pkt_cnt > 1)
- cmsis_dap_handle->packet_count = MIN(MAX_PENDING_REQUESTS, pkt_cnt);
-
- LOG_DEBUG("CMSIS-DAP: Packet Count = %d", pkt_cnt);
- }
-
- LOG_DEBUG("Allocating FIFO for %d pending packets", cmsis_dap_handle->packet_count);
- for (int i = 0; i < cmsis_dap_handle->packet_count; i++) {
- pending_fifo[i].transfers = malloc(pending_queue_len * sizeof(struct pending_transfer_result));
- if (!pending_fifo[i].transfers) {
- LOG_ERROR("Unable to allocate memory for CMSIS-DAP queue");
- retval = ERROR_FAIL;
- goto init_err;
- }
- }
-
- /* Intentionally not checked for error, just logs an info message
- * not vital for further debugging */
- (void)cmsis_dap_get_status();
-
- /* Now try to connect to the target
- * TODO: This is all SWD only @ present */
- retval = cmsis_dap_cmd_dap_swj_clock(jtag_get_speed_khz());
- if (retval != ERROR_OK)
- goto init_err;
-
- /* Ask CMSIS-DAP to automatically retry on receiving WAIT for
- * up to 64 times. This must be changed to 0 if sticky
- * overrun detection is enabled. */
- retval = cmsis_dap_cmd_dap_tfer_configure(0, 64, 0);
- if (retval != ERROR_OK)
- goto init_err;
-
- if (swd_mode) {
- /* Data Phase (bit 2) must be set to 1 if sticky overrun
- * detection is enabled */
- retval = cmsis_dap_cmd_dap_swd_configure(0); /* 1 TRN, no Data Phase */
- if (retval != ERROR_OK)
- goto init_err;
- }
- /* Both LEDs on */
- /* Intentionally not checked for error, debugging will work
- * without LEDs */
- (void)cmsis_dap_cmd_dap_led(LED_ID_CONNECT, LED_ON);
- (void)cmsis_dap_cmd_dap_led(LED_ID_RUN, LED_ON);
-
- /* support connecting with srst asserted */
- enum reset_types jtag_reset_config = jtag_get_reset_config();
-
- if (jtag_reset_config & RESET_CNCT_UNDER_SRST) {
- if (jtag_reset_config & RESET_SRST_NO_GATING) {
- retval = cmsis_dap_cmd_dap_swj_pins(0, SWJ_PIN_SRST, 0, NULL);
- if (retval != ERROR_OK)
- goto init_err;
- LOG_INFO("Connecting under reset");
- }
- }
- LOG_INFO("CMSIS-DAP: Interface ready");
- return ERROR_OK;
-
- init_err:
- cmsis_dap_quit();
- return retval;
- }
-
- static int cmsis_dap_swd_init(void)
- {
- swd_mode = true;
- return ERROR_OK;
- }
-
- static int cmsis_dap_quit(void)
- {
- cmsis_dap_cmd_dap_disconnect();
-
- /* Both LEDs off */
- cmsis_dap_cmd_dap_led(LED_ID_RUN, LED_OFF);
- cmsis_dap_cmd_dap_led(LED_ID_CONNECT, LED_OFF);
-
- cmsis_dap_close(cmsis_dap_handle);
-
- return ERROR_OK;
- }
-
- static int cmsis_dap_reset(int trst, int srst)
- {
- /* Set both TRST and SRST even if they're not enabled as
- * there's no way to tristate them */
-
- output_pins = 0;
- if (!srst)
- output_pins |= SWJ_PIN_SRST;
- if (!trst)
- output_pins |= SWJ_PIN_TRST;
-
- int retval = cmsis_dap_cmd_dap_swj_pins(output_pins,
- SWJ_PIN_TRST | SWJ_PIN_SRST, 0, NULL);
- if (retval != ERROR_OK)
- LOG_ERROR("CMSIS-DAP: Interface reset failed");
- return retval;
- }
-
- static void cmsis_dap_execute_sleep(struct jtag_command *cmd)
- {
- #if 0
- int retval = cmsis_dap_cmd_dap_delay(cmd->cmd.sleep->us);
- if (retval != ERROR_OK)
- #endif
- jtag_sleep(cmd->cmd.sleep->us);
- }
-
- /* Set TMS high for five TCK clocks, to move the TAP to the Test-Logic-Reset state */
- static int cmsis_dap_execute_tlr_reset(struct jtag_command *cmd)
- {
- LOG_INFO("cmsis-dap JTAG TLR_RESET");
- uint8_t seq = 0xff;
-
- int retval = cmsis_dap_cmd_dap_swj_sequence(8, &seq);
- if (retval == ERROR_OK)
- tap_set_state(TAP_RESET);
- return retval;
- }
-
- /* Set new end state */
- static void cmsis_dap_end_state(tap_state_t state)
- {
- if (tap_is_state_stable(state))
- tap_set_end_state(state);
- else {
- LOG_ERROR("BUG: %i is not a valid end state", state);
- exit(-1);
- }
- }
-
- #ifdef SPRINT_BINARY
- static void sprint_binary(char *s, const uint8_t *buf, int offset, int len)
- {
- if (!len)
- return;
-
- /*
- buf = { 0x18 } len=5 should result in: 11000
- buf = { 0xff 0x18 } len=13 should result in: 11111111 11000
- buf = { 0xc0 0x18 } offset=3 len=10 should result in: 11000 11000
- i=3 there means i/8 = 0 so c = 0xFF, and
- */
- for (int i = offset; i < offset + len; ++i) {
- uint8_t c = buf[i / 8], mask = 1 << (i % 8);
- if ((i != offset) && !(i % 8))
- putchar(' ');
- *s++ = (c & mask) ? '1' : '0';
- }
- *s = 0;
- }
- #endif
-
- #ifdef CMSIS_DAP_JTAG_DEBUG
- static void debug_parse_cmsis_buf(const uint8_t *cmd, int cmdlen)
- {
- /* cmd is a usb packet to go to the cmsis-dap interface */
- printf("cmsis-dap buffer (%d b): ", cmdlen);
- for (int i = 0; i < cmdlen; ++i)
- printf(" %02x", cmd[i]);
- printf("\n");
- switch (cmd[1]) {
- case CMD_DAP_JTAG_SEQ: {
- printf("cmsis-dap jtag sequence command %02x (n=%d)\n", cmd[1], cmd[2]);
- /*
- * #2 = number of sequences
- * #3 = sequence info 1
- * #4...4+n_bytes-1 = sequence 1
- * #4+n_bytes = sequence info 2
- * #5+n_bytes = sequence 2 (single bit)
- */
- int pos = 3;
- for (int seq = 0; seq < cmd[2]; ++seq) {
- uint8_t info = cmd[pos++];
- int len = info & DAP_JTAG_SEQ_TCK;
- if (len == 0)
- len = 64;
- printf(" sequence %d starting %d: info %02x (len=%d tms=%d read_tdo=%d): ",
- seq, pos, info, len, info & DAP_JTAG_SEQ_TMS, info & DAP_JTAG_SEQ_TDO);
- for (int i = 0; i < DIV_ROUND_UP(len, 8); ++i)
- printf(" %02x", cmd[pos+i]);
- pos += DIV_ROUND_UP(len, 8);
- printf("\n");
- }
- if (pos != cmdlen) {
- printf("BUFFER LENGTH MISMATCH looks like %d but %d specified", pos, cmdlen);
- exit(-1);
- }
-
- break;
- }
- default:
- LOG_DEBUG("unknown cmsis-dap command %02x", cmd[1]);
- break;
- }
- }
- #endif
-
- static void cmsis_dap_flush(void)
- {
- if (!queued_seq_count)
- return;
-
- LOG_DEBUG_IO("Flushing %d queued sequences (%d bytes) with %d pending scan results to capture",
- queued_seq_count, queued_seq_buf_end, pending_scan_result_count);
-
- /* prepare CMSIS-DAP packet */
- uint8_t *command = cmsis_dap_handle->command;
- command[0] = CMD_DAP_JTAG_SEQ;
- command[1] = queued_seq_count;
- memcpy(&command[2], queued_seq_buf, queued_seq_buf_end);
-
- #ifdef CMSIS_DAP_JTAG_DEBUG
- debug_parse_cmsis_buf(command, queued_seq_buf_end + 2);
- #endif
-
- /* send command to USB device */
- int retval = cmsis_dap_xfer(cmsis_dap_handle, queued_seq_buf_end + 2);
-
- uint8_t *resp = cmsis_dap_handle->response;
- if (retval != ERROR_OK || resp[1] != DAP_OK) {
- LOG_ERROR("CMSIS-DAP command CMD_DAP_JTAG_SEQ failed.");
- exit(-1);
- }
-
- #ifdef CMSIS_DAP_JTAG_DEBUG
- LOG_DEBUG_IO("USB response buf:");
- for (int c = 0; c < queued_seq_buf_end + 3; ++c)
- printf("%02X ", resp[c]);
- printf("\n");
- #endif
-
- /* copy scan results into client buffers */
- for (int i = 0; i < pending_scan_result_count; ++i) {
- struct pending_scan_result *scan = &pending_scan_results[i];
- LOG_DEBUG_IO("Copying pending_scan_result %d/%d: %d bits from byte %d -> buffer + %d bits",
- i, pending_scan_result_count, scan->length, scan->first + 2, scan->buffer_offset);
- #ifdef CMSIS_DAP_JTAG_DEBUG
- for (uint32_t b = 0; b < DIV_ROUND_UP(scan->length, 8); ++b)
- printf("%02X ", resp[2+scan->first+b]);
- printf("\n");
- #endif
- bit_copy(scan->buffer, scan->buffer_offset, &resp[2 + scan->first], 0, scan->length);
- }
-
- /* reset */
- queued_seq_count = 0;
- queued_seq_buf_end = 0;
- queued_seq_tdo_ptr = 0;
- pending_scan_result_count = 0;
- }
-
- /* queue a sequence of bits to clock out TDI / in TDO, executing if the buffer is full.
- *
- * sequence=NULL means clock out zeros on TDI
- * tdo_buffer=NULL means don't capture TDO
- */
- static void cmsis_dap_add_jtag_sequence(int s_len, const uint8_t *sequence, int s_offset,
- bool tms, uint8_t *tdo_buffer, int tdo_buffer_offset)
- {
- LOG_DEBUG_IO("[at %d] %d bits, tms %s, seq offset %d, tdo buf %p, tdo offset %d",
- queued_seq_buf_end,
- s_len, tms ? "HIGH" : "LOW", s_offset, tdo_buffer, tdo_buffer_offset);
-
- if (s_len == 0)
- return;
-
- if (s_len > 64) {
- LOG_DEBUG_IO("START JTAG SEQ SPLIT");
- for (int offset = 0; offset < s_len; offset += 64) {
- int len = s_len - offset;
- if (len > 64)
- len = 64;
- LOG_DEBUG_IO("Splitting long jtag sequence: %d-bit chunk starting at offset %d", len, offset);
- cmsis_dap_add_jtag_sequence(
- len,
- sequence,
- s_offset + offset,
- tms,
- tdo_buffer,
- !tdo_buffer ? 0 : (tdo_buffer_offset + offset)
- );
- }
- LOG_DEBUG_IO("END JTAG SEQ SPLIT");
- return;
- }
-
- int cmd_len = 1 + DIV_ROUND_UP(s_len, 8);
- if (queued_seq_count >= 255 || queued_seq_buf_end + cmd_len > QUEUED_SEQ_BUF_LEN)
- /* empty out the buffer */
- cmsis_dap_flush();
-
- ++queued_seq_count;
-
- /* control byte */
- queued_seq_buf[queued_seq_buf_end] =
- (tms ? DAP_JTAG_SEQ_TMS : 0) |
- (tdo_buffer ? DAP_JTAG_SEQ_TDO : 0) |
- (s_len == 64 ? 0 : s_len);
-
- if (sequence)
- bit_copy(&queued_seq_buf[queued_seq_buf_end + 1], 0, sequence, s_offset, s_len);
- else
- memset(&queued_seq_buf[queued_seq_buf_end + 1], 0, DIV_ROUND_UP(s_len, 8));
-
- queued_seq_buf_end += cmd_len;
-
- if (tdo_buffer) {
- struct pending_scan_result *scan = &pending_scan_results[pending_scan_result_count++];
- scan->first = queued_seq_tdo_ptr;
- queued_seq_tdo_ptr += DIV_ROUND_UP(s_len, 8);
- scan->length = s_len;
- scan->buffer = tdo_buffer;
- scan->buffer_offset = tdo_buffer_offset;
- }
- }
-
- /* queue a sequence of bits to clock out TMS, executing if the buffer is full */
- static void cmsis_dap_add_tms_sequence(const uint8_t *sequence, int s_len)
- {
- LOG_DEBUG_IO("%d bits: %02X", s_len, *sequence);
- /* we use a series of CMD_DAP_JTAG_SEQ commands to toggle TMS,
- because even though it seems ridiculously inefficient, it
- allows us to combine TMS and scan sequences into the same
- USB packet. */
- /* TODO: combine runs of the same tms value */
- for (int i = 0; i < s_len; ++i) {
- bool bit = (sequence[i / 8] & (1 << (i % 8))) != 0;
- cmsis_dap_add_jtag_sequence(1, NULL, 0, bit, NULL, 0);
- }
- }
-
- /* Move to the end state by queuing a sequence to clock into TMS */
- static void cmsis_dap_state_move(void)
- {
- uint8_t tms_scan = tap_get_tms_path(tap_get_state(), tap_get_end_state());
- uint8_t tms_scan_bits = tap_get_tms_path_len(tap_get_state(), tap_get_end_state());
-
- LOG_DEBUG_IO("state move from %s to %s: %d clocks, %02X on tms",
- tap_state_name(tap_get_state()), tap_state_name(tap_get_end_state()),
- tms_scan_bits, tms_scan);
- cmsis_dap_add_tms_sequence(&tms_scan, tms_scan_bits);
-
- tap_set_state(tap_get_end_state());
- }
-
-
- /* Execute a JTAG scan operation by queueing TMS and TDI/TDO sequences */
- static void cmsis_dap_execute_scan(struct jtag_command *cmd)
- {
- LOG_DEBUG_IO("%s type:%d", cmd->cmd.scan->ir_scan ? "IRSCAN" : "DRSCAN",
- jtag_scan_type(cmd->cmd.scan));
-
- /* Make sure there are no trailing fields with num_bits == 0, or the logic below will fail. */
- while (cmd->cmd.scan->num_fields > 0
- && cmd->cmd.scan->fields[cmd->cmd.scan->num_fields - 1].num_bits == 0) {
- cmd->cmd.scan->num_fields--;
- LOG_DEBUG("discarding trailing empty field");
- }
-
- if (cmd->cmd.scan->num_fields == 0) {
- LOG_DEBUG("empty scan, doing nothing");
- return;
- }
-
- if (cmd->cmd.scan->ir_scan) {
- if (tap_get_state() != TAP_IRSHIFT) {
- cmsis_dap_end_state(TAP_IRSHIFT);
- cmsis_dap_state_move();
- }
- } else {
- if (tap_get_state() != TAP_DRSHIFT) {
- cmsis_dap_end_state(TAP_DRSHIFT);
- cmsis_dap_state_move();
- }
- }
-
- cmsis_dap_end_state(cmd->cmd.scan->end_state);
-
- struct scan_field *field = cmd->cmd.scan->fields;
- unsigned scan_size = 0;
-
- for (int i = 0; i < cmd->cmd.scan->num_fields; i++, field++) {
- scan_size += field->num_bits;
- LOG_DEBUG_IO("%s%s field %d/%d %d bits",
- field->in_value ? "in" : "",
- field->out_value ? "out" : "",
- i,
- cmd->cmd.scan->num_fields,
- field->num_bits);
-
- if (i == cmd->cmd.scan->num_fields - 1 && tap_get_state() != tap_get_end_state()) {
- LOG_DEBUG_IO("Last field and have to move out of SHIFT state");
- /* Last field, and we're leaving IRSHIFT/DRSHIFT. Clock last bit during tap
- * movement. This last field can't have length zero, it was checked above. */
- cmsis_dap_add_jtag_sequence(
- field->num_bits - 1, /* number of bits to clock */
- field->out_value, /* output sequence */
- 0, /* output offset */
- false, /* TMS low */
- field->in_value,
- 0);
-
- /* Clock the last bit out, with TMS high */
- uint8_t last_bit = 0;
- if (field->out_value)
- bit_copy(&last_bit, 0, field->out_value, field->num_bits - 1, 1);
- cmsis_dap_add_jtag_sequence(
- 1,
- &last_bit,
- 0,
- true,
- field->in_value,
- field->num_bits - 1);
- tap_set_state(tap_state_transition(tap_get_state(), 1));
-
- /* Now clock one more cycle, with TMS low, to get us into a PAUSE state */
- cmsis_dap_add_jtag_sequence(
- 1,
- &last_bit,
- 0,
- false,
- NULL,
- 0);
- tap_set_state(tap_state_transition(tap_get_state(), 0));
- } else {
- LOG_DEBUG_IO("Internal field, staying in SHIFT state afterwards");
- /* Clocking part of a sequence into DR or IR with TMS=0,
- leaving TMS=0 at the end so we can continue later */
- cmsis_dap_add_jtag_sequence(
- field->num_bits,
- field->out_value,
- 0,
- false,
- field->in_value,
- 0);
- }
- }
-
- if (tap_get_state() != tap_get_end_state()) {
- cmsis_dap_end_state(tap_get_end_state());
- cmsis_dap_state_move();
- }
-
- LOG_DEBUG_IO("%s scan, %i bits, end in %s",
- (cmd->cmd.scan->ir_scan) ? "IR" : "DR", scan_size,
- tap_state_name(tap_get_end_state()));
- }
-
- static void cmsis_dap_pathmove(int num_states, tap_state_t *path)
- {
- uint8_t tms0 = 0x00;
- uint8_t tms1 = 0xff;
-
- for (int i = 0; i < num_states; i++) {
- if (path[i] == tap_state_transition(tap_get_state(), false))
- cmsis_dap_add_tms_sequence(&tms0, 1);
- else if (path[i] == tap_state_transition(tap_get_state(), true))
- cmsis_dap_add_tms_sequence(&tms1, 1);
- else {
- LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition.",
- tap_state_name(tap_get_state()), tap_state_name(path[i]));
- exit(-1);
- }
-
- tap_set_state(path[i]);
- }
-
- cmsis_dap_end_state(tap_get_state());
- }
-
- static void cmsis_dap_execute_pathmove(struct jtag_command *cmd)
- {
- LOG_DEBUG_IO("pathmove: %i states, end in %i",
- cmd->cmd.pathmove->num_states,
- cmd->cmd.pathmove->path[cmd->cmd.pathmove->num_states - 1]);
-
- cmsis_dap_pathmove(cmd->cmd.pathmove->num_states, cmd->cmd.pathmove->path);
- }
-
- static void cmsis_dap_stableclocks(int num_cycles)
- {
- uint8_t tms = tap_get_state() == TAP_RESET;
- /* TODO: Perform optimizations? */
- /* Execute num_cycles. */
- for (int i = 0; i < num_cycles; i++)
- cmsis_dap_add_tms_sequence(&tms, 1);
- }
-
- static void cmsis_dap_runtest(int num_cycles)
- {
- tap_state_t saved_end_state = tap_get_end_state();
-
- /* Only do a state_move when we're not already in IDLE. */
- if (tap_get_state() != TAP_IDLE) {
- cmsis_dap_end_state(TAP_IDLE);
- cmsis_dap_state_move();
- }
- cmsis_dap_stableclocks(num_cycles);
-
- /* Finish in end_state. */
- cmsis_dap_end_state(saved_end_state);
-
- if (tap_get_state() != tap_get_end_state())
- cmsis_dap_state_move();
- }
-
- static void cmsis_dap_execute_runtest(struct jtag_command *cmd)
- {
- LOG_DEBUG_IO("runtest %i cycles, end in %i", cmd->cmd.runtest->num_cycles,
- cmd->cmd.runtest->end_state);
-
- cmsis_dap_end_state(cmd->cmd.runtest->end_state);
- cmsis_dap_runtest(cmd->cmd.runtest->num_cycles);
- }
-
- static void cmsis_dap_execute_stableclocks(struct jtag_command *cmd)
- {
- LOG_DEBUG_IO("stableclocks %i cycles", cmd->cmd.runtest->num_cycles);
- cmsis_dap_stableclocks(cmd->cmd.runtest->num_cycles);
- }
-
- static void cmsis_dap_execute_tms(struct jtag_command *cmd)
- {
- LOG_DEBUG_IO("TMS: %d bits", cmd->cmd.tms->num_bits);
- cmsis_dap_cmd_dap_swj_sequence(cmd->cmd.tms->num_bits, cmd->cmd.tms->bits);
- }
-
- /* TODO: Is there need to call cmsis_dap_flush() for the JTAG_PATHMOVE,
- * JTAG_RUNTEST, JTAG_STABLECLOCKS? */
- static void cmsis_dap_execute_command(struct jtag_command *cmd)
- {
- switch (cmd->type) {
- case JTAG_SLEEP:
- cmsis_dap_flush();
- cmsis_dap_execute_sleep(cmd);
- break;
- case JTAG_TLR_RESET:
- cmsis_dap_flush();
- cmsis_dap_execute_tlr_reset(cmd);
- break;
- case JTAG_SCAN:
- cmsis_dap_execute_scan(cmd);
- break;
- case JTAG_PATHMOVE:
- cmsis_dap_execute_pathmove(cmd);
- break;
- case JTAG_RUNTEST:
- cmsis_dap_execute_runtest(cmd);
- break;
- case JTAG_STABLECLOCKS:
- cmsis_dap_execute_stableclocks(cmd);
- break;
- case JTAG_TMS:
- cmsis_dap_execute_tms(cmd);
- break;
- default:
- LOG_ERROR("BUG: unknown JTAG command type 0x%X encountered", cmd->type);
- exit(-1);
- }
- }
-
- static int cmsis_dap_execute_queue(void)
- {
- struct jtag_command *cmd = jtag_command_queue;
-
- while (cmd) {
- cmsis_dap_execute_command(cmd);
- cmd = cmd->next;
- }
-
- cmsis_dap_flush();
-
- return ERROR_OK;
- }
-
- static int cmsis_dap_speed(int speed)
- {
- if (speed == 0) {
- LOG_ERROR("RTCK not supported. Set nonzero \"adapter speed\".");
- return ERROR_JTAG_NOT_IMPLEMENTED;
- }
-
- return cmsis_dap_cmd_dap_swj_clock(speed);
- }
-
- static int cmsis_dap_speed_div(int speed, int *khz)
- {
- *khz = speed;
- return ERROR_OK;
- }
-
- static int cmsis_dap_khz(int khz, int *jtag_speed)
- {
- *jtag_speed = khz;
- return ERROR_OK;
- }
-
- static bool calculate_swo_prescaler(unsigned int traceclkin_freq,
- uint32_t trace_freq, uint16_t *prescaler)
- {
- unsigned int presc = (traceclkin_freq + trace_freq / 2) / trace_freq;
- if (presc == 0 || presc > TPIU_ACPR_MAX_SWOSCALER + 1)
- return false;
-
- /* Probe's UART speed must be within 3% of the TPIU's SWO baud rate. */
- unsigned int max_deviation = (traceclkin_freq * 3) / 100;
- if (presc * trace_freq < traceclkin_freq - max_deviation ||
- presc * trace_freq > traceclkin_freq + max_deviation)
- return false;
-
- *prescaler = presc;
-
- return true;
- }
-
- /**
- * @see adapter_driver::config_trace
- */
- static int cmsis_dap_config_trace(
- bool trace_enabled,
- enum tpiu_pin_protocol pin_protocol,
- uint32_t port_size,
- unsigned int *swo_freq,
- unsigned int traceclkin_hz,
- uint16_t *swo_prescaler)
- {
- int retval;
-
- if (!trace_enabled) {
- if (cmsis_dap_handle->trace_enabled) {
- retval = cmsis_dap_cmd_dap_swo_control(DAP_SWO_CONTROL_STOP);
- if (retval != ERROR_OK) {
- LOG_ERROR("Failed to disable the SWO-trace.");
- return retval;
- }
- }
- cmsis_dap_handle->trace_enabled = false;
- LOG_INFO("SWO-trace disabled.");
- return ERROR_OK;
- }
-
- if (!(cmsis_dap_handle->caps & INFO_CAPS_SWO_UART) &&
- !(cmsis_dap_handle->caps & INFO_CAPS_SWO_MANCHESTER)) {
- LOG_ERROR("SWO-trace is not supported by the device.");
- return ERROR_FAIL;
- }
-
- uint8_t swo_mode;
- if (pin_protocol == TPIU_PIN_PROTOCOL_ASYNC_UART &&
- (cmsis_dap_handle->caps & INFO_CAPS_SWO_UART)) {
- swo_mode = DAP_SWO_MODE_UART;
- } else if (pin_protocol == TPIU_PIN_PROTOCOL_ASYNC_MANCHESTER &&
- (cmsis_dap_handle->caps & INFO_CAPS_SWO_MANCHESTER)) {
- swo_mode = DAP_SWO_MODE_MANCHESTER;
- } else {
- LOG_ERROR("Selected pin protocol is not supported.");
- return ERROR_FAIL;
- }
-
- if (*swo_freq == 0) {
- LOG_INFO("SWO-trace frequency autodetection not implemented.");
- return ERROR_FAIL;
- }
-
- retval = cmsis_dap_cmd_dap_swo_control(DAP_SWO_CONTROL_STOP);
- if (retval != ERROR_OK)
- return retval;
-
- cmsis_dap_handle->trace_enabled = false;
-
- retval = cmsis_dap_get_swo_buf_sz(&cmsis_dap_handle->swo_buf_sz);
- if (retval != ERROR_OK)
- return retval;
-
- retval = cmsis_dap_cmd_dap_swo_transport(DAP_SWO_TRANSPORT_DATA);
- if (retval != ERROR_OK)
- return retval;
-
- retval = cmsis_dap_cmd_dap_swo_mode(swo_mode);
- if (retval != ERROR_OK)
- return retval;
-
- retval = cmsis_dap_cmd_dap_swo_baudrate(*swo_freq, swo_freq);
- if (retval != ERROR_OK)
- return retval;
-
- if (!calculate_swo_prescaler(traceclkin_hz, *swo_freq,
- swo_prescaler)) {
- LOG_ERROR("SWO frequency is not suitable. Please choose a "
- "different frequency or use auto-detection.");
- return ERROR_FAIL;
- }
-
- LOG_INFO("SWO frequency: %u Hz.", *swo_freq);
- LOG_INFO("SWO prescaler: %u.", *swo_prescaler);
-
- retval = cmsis_dap_cmd_dap_swo_control(DAP_SWO_CONTROL_START);
- if (retval != ERROR_OK)
- return retval;
-
- cmsis_dap_handle->trace_enabled = true;
-
- return ERROR_OK;
- }
-
- /**
- * @see adapter_driver::poll_trace
- */
- static int cmsis_dap_poll_trace(uint8_t *buf, size_t *size)
- {
- uint8_t trace_status;
- size_t trace_count;
-
- if (!cmsis_dap_handle->trace_enabled) {
- *size = 0;
- return ERROR_OK;
- }
-
- int retval = cmsis_dap_cmd_dap_swo_status(&trace_status, &trace_count);
- if (retval != ERROR_OK)
- return retval;
- if ((trace_status & DAP_SWO_STATUS_CAPTURE_MASK) != DAP_SWO_STATUS_CAPTURE_ACTIVE)
- return ERROR_FAIL;
-
- *size = trace_count < *size ? trace_count : *size;
- size_t read_so_far = 0;
- do {
- size_t rb = 0;
- uint32_t packet_size = cmsis_dap_handle->packet_size - 4 /*data-reply*/;
- uint32_t remaining = *size - read_so_far;
- if (remaining < packet_size)
- packet_size = remaining;
- retval = cmsis_dap_cmd_dap_swo_data(
- packet_size,
- &trace_status,
- &rb,
- &buf[read_so_far]);
- if (retval != ERROR_OK)
- return retval;
- if ((trace_status & DAP_SWO_STATUS_CAPTURE_MASK) != DAP_SWO_STATUS_CAPTURE_ACTIVE)
- return ERROR_FAIL;
-
- read_so_far += rb;
- } while (read_so_far < *size);
-
- return ERROR_OK;
- }
-
- COMMAND_HANDLER(cmsis_dap_handle_info_command)
- {
- if (cmsis_dap_get_version_info() == ERROR_OK)
- cmsis_dap_get_status();
-
- return ERROR_OK;
- }
-
- COMMAND_HANDLER(cmsis_dap_handle_cmd_command)
- {
- uint8_t *command = cmsis_dap_handle->command;
-
- for (unsigned i = 0; i < CMD_ARGC; i++)
- command[i] = strtoul(CMD_ARGV[i], NULL, 16);
-
- int retval = cmsis_dap_xfer(cmsis_dap_handle, CMD_ARGC);
-
- if (retval != ERROR_OK) {
- LOG_ERROR("CMSIS-DAP command failed.");
- return ERROR_JTAG_DEVICE_ERROR;
- }
-
- uint8_t *resp = cmsis_dap_handle->response;
- LOG_INFO("Returned data %02" PRIx8 " %02" PRIx8 " %02" PRIx8 " %02" PRIx8,
- resp[1], resp[2], resp[3], resp[4]);
-
- return ERROR_OK;
- }
-
- COMMAND_HANDLER(cmsis_dap_handle_vid_pid_command)
- {
- if (CMD_ARGC > MAX_USB_IDS * 2) {
- LOG_WARNING("ignoring extra IDs in cmsis_dap_vid_pid "
- "(maximum is %d pairs)", MAX_USB_IDS);
- CMD_ARGC = MAX_USB_IDS * 2;
- }
- if (CMD_ARGC < 2 || (CMD_ARGC & 1)) {
- LOG_WARNING("incomplete cmsis_dap_vid_pid configuration directive");
- if (CMD_ARGC < 2)
- return ERROR_COMMAND_SYNTAX_ERROR;
- /* remove the incomplete trailing id */
- CMD_ARGC -= 1;
- }
-
- unsigned i;
- for (i = 0; i < CMD_ARGC; i += 2) {
- COMMAND_PARSE_NUMBER(u16, CMD_ARGV[i], cmsis_dap_vid[i >> 1]);
- COMMAND_PARSE_NUMBER(u16, CMD_ARGV[i + 1], cmsis_dap_pid[i >> 1]);
- }
-
- /*
- * Explicitly terminate, in case there are multiples instances of
- * cmsis_dap_vid_pid.
- */
- cmsis_dap_vid[i >> 1] = cmsis_dap_pid[i >> 1] = 0;
-
- return ERROR_OK;
- }
-
- COMMAND_HANDLER(cmsis_dap_handle_serial_command)
- {
- if (CMD_ARGC == 1)
- cmsis_dap_serial = strdup(CMD_ARGV[0]);
- else
- LOG_ERROR("expected exactly one argument to cmsis_dap_serial <serial-number>");
-
- return ERROR_OK;
- }
-
- COMMAND_HANDLER(cmsis_dap_handle_backend_command)
- {
- if (CMD_ARGC == 1) {
- if (strcmp(CMD_ARGV[0], "auto") == 0) {
- cmsis_dap_backend = -1; /* autoselect */
- } else {
- for (unsigned int i = 0; i < ARRAY_SIZE(cmsis_dap_backends); i++) {
- if (strcasecmp(cmsis_dap_backends[i]->name, CMD_ARGV[0]) == 0) {
- cmsis_dap_backend = i;
- return ERROR_OK;
- }
- }
-
- LOG_ERROR("invalid backend argument to cmsis_dap_backend <backend>");
- }
- } else {
- LOG_ERROR("expected exactly one argument to cmsis_dap_backend <backend>");
- }
-
- return ERROR_OK;
- }
-
- static const struct command_registration cmsis_dap_subcommand_handlers[] = {
- {
- .name = "info",
- .handler = &cmsis_dap_handle_info_command,
- .mode = COMMAND_EXEC,
- .usage = "",
- .help = "show cmsis-dap info",
- },
- {
- .name = "cmd",
- .handler = &cmsis_dap_handle_cmd_command,
- .mode = COMMAND_EXEC,
- .usage = "",
- .help = "issue cmsis-dap command",
- },
- COMMAND_REGISTRATION_DONE
- };
-
-
- static const struct command_registration cmsis_dap_command_handlers[] = {
- {
- .name = "cmsis-dap",
- .mode = COMMAND_ANY,
- .help = "perform CMSIS-DAP management",
- .usage = "<cmd>",
- .chain = cmsis_dap_subcommand_handlers,
- },
- {
- .name = "cmsis_dap_vid_pid",
- .handler = &cmsis_dap_handle_vid_pid_command,
- .mode = COMMAND_CONFIG,
- .help = "the vendor ID and product ID of the CMSIS-DAP device",
- .usage = "(vid pid)*",
- },
- {
- .name = "cmsis_dap_serial",
- .handler = &cmsis_dap_handle_serial_command,
- .mode = COMMAND_CONFIG,
- .help = "set the serial number of the adapter",
- .usage = "serial_string",
- },
- {
- .name = "cmsis_dap_backend",
- .handler = &cmsis_dap_handle_backend_command,
- .mode = COMMAND_CONFIG,
- .help = "set the communication backend to use (USB bulk or HID).",
- .usage = "(auto | usb_bulk | hid)",
- },
- #if BUILD_CMSIS_DAP_USB
- {
- .name = "cmsis_dap_usb",
- .chain = cmsis_dap_usb_subcommand_handlers,
- .mode = COMMAND_ANY,
- .help = "USB bulk backend-specific commands",
- .usage = "<cmd>",
- },
- #endif
- COMMAND_REGISTRATION_DONE
- };
-
- static const struct swd_driver cmsis_dap_swd_driver = {
- .init = cmsis_dap_swd_init,
- .switch_seq = cmsis_dap_swd_switch_seq,
- .read_reg = cmsis_dap_swd_read_reg,
- .write_reg = cmsis_dap_swd_write_reg,
- .run = cmsis_dap_swd_run_queue,
- };
-
- static const char * const cmsis_dap_transport[] = { "swd", "jtag", NULL };
-
- static struct jtag_interface cmsis_dap_interface = {
- .supported = DEBUG_CAP_TMS_SEQ,
- .execute_queue = cmsis_dap_execute_queue,
- };
-
- struct adapter_driver cmsis_dap_adapter_driver = {
- .name = "cmsis-dap",
- .transports = cmsis_dap_transport,
- .commands = cmsis_dap_command_handlers,
-
- .init = cmsis_dap_init,
- .quit = cmsis_dap_quit,
- .reset = cmsis_dap_reset,
- .speed = cmsis_dap_speed,
- .khz = cmsis_dap_khz,
- .speed_div = cmsis_dap_speed_div,
- .config_trace = cmsis_dap_config_trace,
- .poll_trace = cmsis_dap_poll_trace,
-
- .jtag_ops = &cmsis_dap_interface,
- .swd_ops = &cmsis_dap_swd_driver,
- };
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