X-Git-Url: https://review.openocd.org/gitweb?a=blobdiff_plain;f=src%2Fjtag%2Fdrivers%2Fcmsis_dap.c;h=52e4fadeb90748bb4c36dd4e584142e38bbd9f3e;hb=b25e5322eea66eb76232da06fa435d2f11097c86;hp=16480ae1e8076559563b9330f91d43fc9f03b773;hpb=9c314578750324b8d46cdbe0801d3cdfc25c4a4c;p=openocd.git
diff --git a/src/jtag/drivers/cmsis_dap.c b/src/jtag/drivers/cmsis_dap.c
index 16480ae1e8..52e4fadeb9 100644
--- a/src/jtag/drivers/cmsis_dap.c
+++ b/src/jtag/drivers/cmsis_dap.c
@@ -1,4 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
/***************************************************************************
+ * Copyright (C) 2021 by Adrian Negreanu *
+ * groleo@gmail.com *
+ * *
* Copyright (C) 2018 by Mickaël Thomas *
* mickael9@gmail.com *
* *
@@ -16,19 +21,6 @@
* *
* 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 . *
***************************************************************************/
#ifdef HAVE_CONFIG_H
@@ -36,12 +28,16 @@
#endif
#include
+#include "helper/replacements.h"
+#include
#include
#include
#include
#include
+#include
#include "cmsis_dap.h"
+#include "libusb_helper.h"
static const struct cmsis_dap_backend *const cmsis_dap_backends[] = {
#if BUILD_CMSIS_DAP_USB == 1
@@ -70,12 +66,9 @@ static const struct cmsis_dap_backend *const cmsis_dap_backends[] = {
/* 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
@@ -95,9 +88,18 @@ static bool swd_mode;
#define INFO_ID_CAPS 0xf0 /* byte */
#define INFO_ID_PKT_CNT 0xfe /* byte */
#define INFO_ID_PKT_SZ 0xff /* short */
-
-#define INFO_CAPS_SWD 0x01
-#define INFO_CAPS_JTAG 0x02
+#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)
+#define INFO_CAPS_ATOMIC_CMDS BIT(4)
+#define INFO_CAPS_TEST_DOMAIN_TIMER BIT(5)
+#define INFO_CAPS_SWO_STREAMING_TRACE BIT(6)
+#define INFO_CAPS_UART_PORT BIT(7)
+#define INFO_CAPS_USB_COM_PORT BIT(8)
+#define INFO_CAPS__NUM_CAPS 9
/* CMD_LED */
#define LED_ID_CONNECT 0x00
@@ -136,6 +138,7 @@ static bool swd_mode;
/* 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
@@ -157,54 +160,75 @@ static bool swd_mode;
#define CMD_DAP_TFER_BLOCK 0x06
#define CMD_DAP_TFER_ABORT 0x07
+/* DAP_TransferBlock increases the sum of command/response sizes
+ * (due to 16-bit Transfer Count) if used in a small packet.
+ * Prevent using it until we have at least r/w operations. */
+#define CMD_DAP_TFER_BLOCK_MIN_OPS 4
+
/* 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"
-};
-
-/* max clock speed (kHz) */
-#define DAP_MAX_CLOCK 5000
-
-
-struct pending_transfer_result {
- uint8_t cmd;
- uint32_t data;
- void *buffer;
-};
-
-struct pending_request_block {
- struct pending_transfer_result *transfers;
- int transfer_count;
+static const char * const info_caps_str[INFO_CAPS__NUM_CAPS] = {
+ "SWD supported",
+ "JTAG supported",
+ "SWO-UART supported",
+ "SWO-MANCHESTER supported",
+ "Atomic commands supported",
+ "Test domain timer supported",
+ "SWO streaming trace supported",
+ "UART communication port supported",
+ "UART via USB COM port supported",
};
struct pending_scan_result {
/** Offset in bytes in the CMD_DAP_JTAG_SEQ response buffer. */
- unsigned first;
+ unsigned int first;
/** Number of bits to read. */
- unsigned length;
+ unsigned int length;
/** Location to store the result */
uint8_t *buffer;
/** Offset in the destination buffer */
- unsigned buffer_offset;
+ unsigned int 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;
+static unsigned int pending_queue_len;
+static unsigned int tfer_max_command_size;
+static unsigned int tfer_max_response_size;
/* pointers to buffers that will receive jtag scan results on the next flush */
#define MAX_PENDING_SCAN_RESULTS 256
@@ -212,7 +236,7 @@ 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)
+#define QUEUED_SEQ_BUF_LEN (cmsis_dap_handle->packet_usable_size - 3)
static int queued_seq_count;
static int queued_seq_buf_end;
static int queued_seq_tdo_ptr;
@@ -225,53 +249,41 @@ 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 = malloc(sizeof(struct cmsis_dap));
- if (dap == NULL) {
+ struct cmsis_dap *dap = calloc(1, sizeof(struct cmsis_dap));
+ if (!dap) {
LOG_ERROR("unable to allocate memory");
return ERROR_FAIL;
}
- dap->caps = 0;
- dap->mode = 0;
- dap->packet_size = 0; /* initialized by backend */
-
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)
+ if (backend->open(dap, cmsis_dap_vid, cmsis_dap_pid, adapter_get_required_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)
+ if (backend->open(dap, cmsis_dap_vid, cmsis_dap_pid, adapter_get_required_serial()) == ERROR_OK)
break;
else
backend = NULL;
}
}
- if (backend == NULL) {
+ if (!backend) {
LOG_ERROR("unable to find a matching CMSIS-DAP device");
free(dap);
return ERROR_FAIL;
}
- assert(dap->packet_size > 0);
-
dap->backend = backend;
- dap->packet_buffer = malloc(dap->packet_size);
-
- if (dap->packet_buffer == NULL) {
- LOG_ERROR("unable to allocate memory");
- dap->backend->close(dap);
- free(dap);
- return ERROR_FAIL;
- }
cmsis_dap_handle = dap;
@@ -285,85 +297,105 @@ static void cmsis_dap_close(struct cmsis_dap *dap)
dap->backend = NULL;
}
- free(cmsis_dap_handle->packet_buffer);
+ free(dap->packet_buffer);
+
+ for (unsigned int i = 0; i < MAX_PENDING_REQUESTS; i++) {
+ free(dap->pending_fifo[i].transfers);
+ dap->pending_fifo[i].transfers = NULL;
+ }
+
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) {
+ if (dap->pending_fifo_block_count) {
+ LOG_ERROR("pending %u blocks, flushing", dap->pending_fifo_block_count);
+ while (dap->pending_fifo_block_count) {
dap->backend->read(dap, 10);
- pending_fifo_block_count--;
+ dap->pending_fifo_block_count--;
}
- pending_fifo_put_idx = 0;
- pending_fifo_get_idx = 0;
+ dap->pending_fifo_put_idx = 0;
+ dap->pending_fifo_get_idx = 0;
}
- int retval = dap->backend->write(dap, txlen, USB_TIMEOUT);
+ uint8_t current_cmd = dap->command[0];
+ int retval = dap->backend->write(dap, txlen, LIBUSB_TIMEOUT_MS);
if (retval < 0)
return retval;
/* get reply */
- retval = dap->backend->read(dap, USB_TIMEOUT);
+ retval = dap->backend->read(dap, LIBUSB_TIMEOUT_MS);
if (retval < 0)
return retval;
+ uint8_t *resp = dap->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)
+static int cmsis_dap_cmd_dap_swj_pins(uint8_t pins, uint8_t mask, uint32_t delay, uint8_t *input)
{
- int retval;
- uint8_t *buffer = cmsis_dap_handle->packet_buffer;
-
- buffer[0] = 0; /* report number */
- buffer[1] = CMD_DAP_SWJ_PINS;
- buffer[2] = pins;
- buffer[3] = mask;
- buffer[4] = delay & 0xff;
- buffer[5] = (delay >> 8) & 0xff;
- buffer[6] = (delay >> 16) & 0xff;
- buffer[7] = (delay >> 24) & 0xff;
- retval = cmsis_dap_xfer(cmsis_dap_handle, 8);
+ 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 = buffer[1];
+ *input = cmsis_dap_handle->response[1];
return ERROR_OK;
}
-static int cmsis_dap_cmd_DAP_SWJ_Clock(uint32_t swj_clock)
+static int cmsis_dap_cmd_dap_swj_clock(uint32_t swj_clock)
{
- int retval;
- uint8_t *buffer = cmsis_dap_handle->packet_buffer;
+ uint8_t *command = cmsis_dap_handle->command;
/* set clock in Hz */
swj_clock *= 1000;
- buffer[0] = 0; /* report number */
- buffer[1] = CMD_DAP_SWJ_CLOCK;
- buffer[2] = swj_clock & 0xff;
- buffer[3] = (swj_clock >> 8) & 0xff;
- buffer[4] = (swj_clock >> 16) & 0xff;
- buffer[5] = (swj_clock >> 24) & 0xff;
- retval = cmsis_dap_xfer(cmsis_dap_handle, 6);
-
- if (retval != ERROR_OK || buffer[1] != DAP_OK) {
+
+ 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;
}
@@ -372,64 +404,57 @@ static int cmsis_dap_cmd_DAP_SWJ_Clock(uint32_t swj_clock)
}
/* 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)
+static int cmsis_dap_cmd_dap_swj_sequence(uint8_t s_len, const uint8_t *sequence)
{
- int retval;
- uint8_t *buffer = cmsis_dap_handle->packet_buffer;
+ 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)
+ for (unsigned int i = 0; i < DIV_ROUND_UP(s_len, 8); ++i)
printf("%02X ", sequence[i]);
printf("\n");
#endif
- buffer[0] = 0; /* report number */
- buffer[1] = CMD_DAP_SWJ_SEQ;
- buffer[2] = s_len;
- bit_copy(&buffer[3], 0, sequence, 0, s_len);
-
- retval = cmsis_dap_xfer(cmsis_dap_handle, DIV_ROUND_UP(s_len, 8) + 3);
+ command[0] = CMD_DAP_SWJ_SEQ;
+ command[1] = s_len;
+ bit_copy(&command[2], 0, sequence, 0, s_len);
- if (retval != ERROR_OK || buffer[1] != DAP_OK)
+ 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)
+static int cmsis_dap_cmd_dap_info(uint8_t info, uint8_t **data)
{
- int retval;
- uint8_t *buffer = cmsis_dap_handle->packet_buffer;
+ uint8_t *command = cmsis_dap_handle->command;
- buffer[0] = 0; /* report number */
- buffer[1] = CMD_DAP_INFO;
- buffer[2] = info;
- retval = cmsis_dap_xfer(cmsis_dap_handle, 3);
+ 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 = &(buffer[1]);
+ *data = &cmsis_dap_handle->response[1];
return ERROR_OK;
}
-static int cmsis_dap_cmd_DAP_LED(uint8_t led, uint8_t state)
+static int cmsis_dap_cmd_dap_led(uint8_t led, uint8_t state)
{
- int retval;
- uint8_t *buffer = cmsis_dap_handle->packet_buffer;
+ uint8_t *command = cmsis_dap_handle->command;
- buffer[0] = 0; /* report number */
- buffer[1] = CMD_DAP_LED;
- buffer[2] = led;
- buffer[3] = state;
- retval = cmsis_dap_xfer(cmsis_dap_handle, 4);
+ command[0] = CMD_DAP_LED;
+ command[1] = led;
+ command[2] = state;
- if (retval != ERROR_OK || buffer[1] != 0x00) {
+ 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;
}
@@ -437,22 +462,20 @@ static int cmsis_dap_cmd_DAP_LED(uint8_t led, uint8_t state)
return ERROR_OK;
}
-static int cmsis_dap_cmd_DAP_Connect(uint8_t mode)
+static int cmsis_dap_cmd_dap_connect(uint8_t mode)
{
- int retval;
- uint8_t *buffer = cmsis_dap_handle->packet_buffer;
+ uint8_t *command = cmsis_dap_handle->command;
- buffer[0] = 0; /* report number */
- buffer[1] = CMD_DAP_CONNECT;
- buffer[2] = mode;
- retval = cmsis_dap_xfer(cmsis_dap_handle, 3);
+ 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 (buffer[1] != mode) {
+ if (cmsis_dap_handle->response[1] != mode) {
LOG_ERROR("CMSIS-DAP failed to connect in mode (%d)", mode);
return ERROR_JTAG_DEVICE_ERROR;
}
@@ -460,16 +483,14 @@ static int cmsis_dap_cmd_DAP_Connect(uint8_t mode)
return ERROR_OK;
}
-static int cmsis_dap_cmd_DAP_Disconnect(void)
+static int cmsis_dap_cmd_dap_disconnect(void)
{
- int retval;
- uint8_t *buffer = cmsis_dap_handle->packet_buffer;
+ uint8_t *command = cmsis_dap_handle->command;
- buffer[0] = 0; /* report number */
- buffer[1] = CMD_DAP_DISCONNECT;
- retval = cmsis_dap_xfer(cmsis_dap_handle, 2);
+ command[0] = CMD_DAP_DISCONNECT;
- if (retval != ERROR_OK || buffer[1] != DAP_OK) {
+ 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;
}
@@ -477,21 +498,17 @@ static int cmsis_dap_cmd_DAP_Disconnect(void)
return ERROR_OK;
}
-static int cmsis_dap_cmd_DAP_TFER_Configure(uint8_t idle, uint16_t retry_count, uint16_t match_retry)
+static int cmsis_dap_cmd_dap_tfer_configure(uint8_t idle, uint16_t retry_count, uint16_t match_retry)
{
- int retval;
- uint8_t *buffer = cmsis_dap_handle->packet_buffer;
-
- buffer[0] = 0; /* report number */
- buffer[1] = CMD_DAP_TFER_CONFIGURE;
- buffer[2] = idle;
- buffer[3] = retry_count & 0xff;
- buffer[4] = (retry_count >> 8) & 0xff;
- buffer[5] = match_retry & 0xff;
- buffer[6] = (match_retry >> 8) & 0xff;
- retval = cmsis_dap_xfer(cmsis_dap_handle, 7);
-
- if (retval != ERROR_OK || buffer[1] != DAP_OK) {
+ 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;
}
@@ -499,17 +516,15 @@ static int cmsis_dap_cmd_DAP_TFER_Configure(uint8_t idle, uint16_t retry_count,
return ERROR_OK;
}
-static int cmsis_dap_cmd_DAP_SWD_Configure(uint8_t cfg)
+static int cmsis_dap_cmd_dap_swd_configure(uint8_t cfg)
{
- int retval;
- uint8_t *buffer = cmsis_dap_handle->packet_buffer;
+ uint8_t *command = cmsis_dap_handle->command;
- buffer[0] = 0; /* report number */
- buffer[1] = CMD_DAP_SWD_CONFIGURE;
- buffer[2] = cfg;
- retval = cmsis_dap_xfer(cmsis_dap_handle, 3);
+ command[0] = CMD_DAP_SWD_CONFIGURE;
+ command[1] = cfg;
- if (retval != ERROR_OK || buffer[1] != DAP_OK) {
+ 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;
}
@@ -518,18 +533,15 @@ static int cmsis_dap_cmd_DAP_SWD_Configure(uint8_t cfg)
}
#if 0
-static int cmsis_dap_cmd_DAP_Delay(uint16_t delay_us)
+static int cmsis_dap_cmd_dap_delay(uint16_t delay_us)
{
- int retval;
- uint8_t *buffer = cmsis_dap_handle->packet_buffer;
+ uint8_t *command = cmsis_dap_handle->command;
- buffer[0] = 0; /* report number */
- buffer[1] = CMD_DAP_DELAY;
- buffer[2] = delay_us & 0xff;
- buffer[3] = (delay_us >> 8) & 0xff;
- retval = cmsis_dap_xfer(cmsis_dap_handle, 4);
+ command[0] = CMD_DAP_DELAY;
+ h_u16_to_le(&command[1], delay_us);
- if (retval != ERROR_OK || buffer[1] != DAP_OK) {
+ 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;
}
@@ -538,12 +550,220 @@ static int cmsis_dap_cmd_DAP_Delay(uint16_t delay_us)
}
#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 */
+
+ LOG_DEBUG_IO("DP write reg TARGETSEL %" PRIx32, instance_id);
+
+ 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, 5);
+ 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 *buffer = dap->packet_buffer;
- struct pending_request_block *block = &pending_fifo[pending_fifo_put_idx];
+ uint8_t *command = dap->command;
+ struct pending_request_block *block = &dap->pending_fifo[dap->pending_fifo_put_idx];
+
+ assert(dap->write_count + dap->read_count == block->transfer_count);
- LOG_DEBUG_IO("Executing %d queued transactions from FIFO index %d", block->transfer_count, pending_fifo_put_idx);
+ /* Reset packet size check counters for the next packet */
+ dap->write_count = 0;
+ dap->read_count = 0;
+
+ LOG_DEBUG_IO("Executing %d queued transactions from FIFO index %u%s",
+ block->transfer_count, dap->pending_fifo_put_idx,
+ cmsis_dap_handle->swd_cmds_differ ? "" : ", same swd ops");
if (queued_retval != ERROR_OK) {
LOG_DEBUG("Skipping due to previous errors: %d", queued_retval);
@@ -553,20 +773,30 @@ static void cmsis_dap_swd_write_from_queue(struct cmsis_dap *dap)
if (block->transfer_count == 0)
goto skip;
- size_t idx = 0;
- buffer[idx++] = 0; /* report number */
- buffer[idx++] = CMD_DAP_TFER;
- buffer[idx++] = 0x00; /* DAP Index */
- buffer[idx++] = block->transfer_count;
+ bool block_cmd = !cmsis_dap_handle->swd_cmds_differ
+ && block->transfer_count >= CMD_DAP_TFER_BLOCK_MIN_OPS;
+ block->command = block_cmd ? CMD_DAP_TFER_BLOCK : CMD_DAP_TFER;
- for (int i = 0; i < block->transfer_count; i++) {
+ command[0] = block->command;
+ command[1] = 0x00; /* DAP Index */
+
+ unsigned int idx;
+ if (block_cmd) {
+ h_u16_to_le(&command[2], block->transfer_count);
+ idx = 4; /* The first transfer will store the common DAP register */
+ } else {
+ command[2] = block->transfer_count;
+ idx = 3;
+ }
+
+ for (unsigned 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",
+ 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
@@ -576,29 +806,28 @@ static void cmsis_dap_swd_write_from_queue(struct cmsis_dap *dap)
* 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_cmd_dap_tfer_configure() and
+ * cmsis_dap_cmd_dap_swd_configure() in
* cmsis_dap_init().
*/
- if (!(cmd & SWD_CMD_RnW) &&
- !(cmd & SWD_CMD_APnDP) &&
+ 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;
}
- buffer[idx++] = (cmd >> 1) & 0x0f;
- if (!(cmd & SWD_CMD_RnW)) {
- buffer[idx++] = (data) & 0xff;
- buffer[idx++] = (data >> 8) & 0xff;
- buffer[idx++] = (data >> 16) & 0xff;
- buffer[idx++] = (data >> 24) & 0xff;
+ if (!block_cmd || i == 0)
+ 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);
-
+ int retval = dap->backend->write(dap, idx, LIBUSB_TIMEOUT_MS);
if (retval < 0) {
queued_retval = retval;
goto skip;
@@ -606,10 +835,10 @@ static void cmsis_dap_swd_write_from_queue(struct cmsis_dap *dap)
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);
+ dap->pending_fifo_put_idx = (dap->pending_fifo_put_idx + 1) % dap->packet_count;
+ dap->pending_fifo_block_count++;
+ if (dap->pending_fifo_block_count > dap->packet_count)
+ LOG_ERROR("too much pending writes %u", dap->pending_fifo_block_count);
return;
@@ -619,15 +848,14 @@ skip:
static void cmsis_dap_swd_read_process(struct cmsis_dap *dap, int timeout_ms)
{
- uint8_t *buffer = dap->packet_buffer;
- struct pending_request_block *block = &pending_fifo[pending_fifo_get_idx];
+ struct pending_request_block *block = &dap->pending_fifo[dap->pending_fifo_get_idx];
- if (pending_fifo_block_count == 0)
+ if (dap->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)
+ if (retval == ERROR_TIMEOUT_REACHED && timeout_ms < LIBUSB_TIMEOUT_MS)
return;
if (retval <= 0) {
@@ -636,37 +864,56 @@ static void cmsis_dap_swd_read_process(struct cmsis_dap *dap, int timeout_ms)
goto skip;
}
- if (buffer[2] & 0x08) {
- LOG_DEBUG("CMSIS-DAP Protocol Error @ %d (wrong parity)", buffer[1]);
+ uint8_t *resp = dap->response;
+ if (resp[0] != block->command) {
+ LOG_ERROR("CMSIS-DAP command mismatch. Expected 0x%x received 0x%" PRIx8,
+ block->command, resp[0]);
+ queued_retval = ERROR_FAIL;
+ goto skip;
+ }
+
+ unsigned int transfer_count;
+ unsigned int idx;
+ if (block->command == CMD_DAP_TFER_BLOCK) {
+ transfer_count = le_to_h_u16(&resp[1]);
+ idx = 3;
+ } else {
+ transfer_count = resp[1];
+ idx = 2;
+ }
+ if (resp[idx] & 0x08) {
+ LOG_DEBUG("CMSIS-DAP Protocol Error @ %d (wrong parity)", transfer_count);
queued_retval = ERROR_FAIL;
goto skip;
}
- uint8_t ack = buffer[2] & 0x07;
+ uint8_t ack = resp[idx++] & 0x07;
if (ack != SWD_ACK_OK) {
- LOG_DEBUG("SWD ack not OK @ %d %s", buffer[1],
+ 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 != buffer[1])
+ if (block->transfer_count != transfer_count)
LOG_ERROR("CMSIS-DAP transfer count mismatch: expected %d, got %d",
- block->transfer_count, buffer[1]);
+ block->transfer_count, transfer_count);
- LOG_DEBUG_IO("Received results of %d queued transactions FIFO index %d", buffer[1], pending_fifo_get_idx);
- size_t idx = 3;
- for (int i = 0; i < buffer[1]; i++) {
+ LOG_DEBUG_IO("Received results of %d queued transactions FIFO index %u timeout %i",
+ transfer_count, dap->pending_fifo_get_idx, timeout_ms);
+
+ for (unsigned int i = 0; i < transfer_count; i++) {
struct pending_transfer_result *transfer = &(block->transfers[i]);
- if (transfer->cmd & SWD_CMD_RnW) {
+ if (transfer->cmd & SWD_CMD_RNW) {
static uint32_t last_read;
- uint32_t data = le_to_h_u32(&buffer[idx]);
+ uint32_t data = le_to_h_u32(&resp[idx]);
uint32_t tmp = data;
idx += 4;
- LOG_DEBUG_IO("Read result: %"PRIx32, data);
+ LOG_DEBUG_IO("Read result: %" PRIx32, data);
/* Imitate posted AP reads */
- if ((transfer->cmd & SWD_CMD_APnDP) ||
+ if ((transfer->cmd & SWD_CMD_APNDP) ||
((transfer->cmd & SWD_CMD_A32) >> 1 == DP_RDBUFF)) {
tmp = last_read;
last_read = data;
@@ -679,22 +926,22 @@ static void cmsis_dap_swd_read_process(struct cmsis_dap *dap, int timeout_ms)
skip:
block->transfer_count = 0;
- pending_fifo_get_idx = (pending_fifo_get_idx + 1) % dap->packet_count;
- pending_fifo_block_count--;
+ dap->pending_fifo_get_idx = (dap->pending_fifo_get_idx + 1) % dap->packet_count;
+ dap->pending_fifo_block_count--;
}
static int cmsis_dap_swd_run_queue(void)
{
- if (pending_fifo_block_count)
+ if (cmsis_dap_handle->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);
+ while (cmsis_dap_handle->pending_fifo_block_count)
+ cmsis_dap_swd_read_process(cmsis_dap_handle, LIBUSB_TIMEOUT_MS);
- pending_fifo_put_idx = 0;
- pending_fifo_get_idx = 0;
+ cmsis_dap_handle->pending_fifo_put_idx = 0;
+ cmsis_dap_handle->pending_fifo_get_idx = 0;
int retval = queued_retval;
queued_retval = ERROR_OK;
@@ -702,42 +949,116 @@ static int cmsis_dap_swd_run_queue(void)
return retval;
}
+static unsigned int cmsis_dap_tfer_cmd_size(unsigned int write_count,
+ unsigned int read_count, bool block_tfer)
+{
+ unsigned int size;
+ if (block_tfer) {
+ size = 5; /* DAP_TransferBlock header */
+ size += write_count * 4; /* data */
+ } else {
+ size = 3; /* DAP_Transfer header */
+ size += write_count * (1 + 4); /* DAP register + data */
+ size += read_count; /* DAP register */
+ }
+ return size;
+}
+
+static unsigned int cmsis_dap_tfer_resp_size(unsigned int write_count,
+ unsigned int read_count, bool block_tfer)
+{
+ unsigned int size;
+ if (block_tfer)
+ size = 4; /* DAP_TransferBlock response header */
+ else
+ size = 3; /* DAP_Transfer response header */
+
+ size += read_count * 4; /* data */
+ return size;
+}
+
static void cmsis_dap_swd_queue_cmd(uint8_t cmd, uint32_t *dst, uint32_t data)
{
- if (pending_fifo[pending_fifo_put_idx].transfer_count == pending_queue_len) {
- if (pending_fifo_block_count)
+ /* Compute sizes of the DAP Transfer command and the expected response
+ * for all queued and this operation */
+ bool targetsel_cmd = swd_cmd(false, false, DP_TARGETSEL) == cmd;
+
+ unsigned int write_count = cmsis_dap_handle->write_count;
+ unsigned int read_count = cmsis_dap_handle->read_count;
+ bool block_cmd;
+ if (write_count + read_count < CMD_DAP_TFER_BLOCK_MIN_OPS)
+ block_cmd = false;
+ else
+ block_cmd = !cmsis_dap_handle->swd_cmds_differ
+ && cmd == cmsis_dap_handle->common_swd_cmd;
+
+ if (cmd & SWD_CMD_RNW)
+ read_count++;
+ else
+ write_count++;
+
+ unsigned int cmd_size = cmsis_dap_tfer_cmd_size(write_count, read_count,
+ block_cmd);
+ unsigned int resp_size = cmsis_dap_tfer_resp_size(write_count, read_count,
+ block_cmd);
+ unsigned int max_transfer_count = block_cmd ? 65535 : 255;
+
+ /* Does the DAP Transfer command and the expected response fit into one packet?
+ * Run the queue also before a targetsel - it cannot be queued */
+ if (cmd_size > tfer_max_command_size
+ || resp_size > tfer_max_response_size
+ || targetsel_cmd
+ || write_count + read_count > max_transfer_count) {
+ if (cmsis_dap_handle->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 (cmsis_dap_handle->pending_fifo_block_count >= cmsis_dap_handle->packet_count)
+ cmsis_dap_swd_read_process(cmsis_dap_handle, LIBUSB_TIMEOUT_MS);
}
+ assert(cmsis_dap_handle->pending_fifo[cmsis_dap_handle->pending_fifo_put_idx].transfer_count < pending_queue_len);
+
if (queued_retval != ERROR_OK)
return;
- struct pending_request_block *block = &pending_fifo[pending_fifo_put_idx];
+ if (targetsel_cmd) {
+ cmsis_dap_metacmd_targetsel(data);
+ return;
+ }
+
+ struct pending_request_block *block = &cmsis_dap_handle->pending_fifo[cmsis_dap_handle->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) {
+ if (block->transfer_count == 0) {
+ cmsis_dap_handle->swd_cmds_differ = false;
+ cmsis_dap_handle->common_swd_cmd = cmd;
+ } else if (cmd != cmsis_dap_handle->common_swd_cmd) {
+ cmsis_dap_handle->swd_cmds_differ = true;
+ }
+
+ if (cmd & SWD_CMD_RNW) {
/* Queue a read transaction */
transfer->buffer = dst;
+ cmsis_dap_handle->read_count++;
+ } else {
+ cmsis_dap_handle->write_count++;
}
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));
+ 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);
+ assert(cmd & SWD_CMD_RNW);
cmsis_dap_swd_queue_cmd(cmd, value, 0);
}
@@ -745,7 +1066,7 @@ static int cmsis_dap_get_serial_info(void)
{
uint8_t *data;
- int retval = cmsis_dap_cmd_DAP_Info(INFO_ID_SERNUM, &data);
+ int retval = cmsis_dap_cmd_dap_info(INFO_ID_SERNUM, &data);
if (retval != ERROR_OK)
return retval;
@@ -760,7 +1081,7 @@ 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);
+ int retval = cmsis_dap_cmd_dap_info(INFO_ID_FW_VER, &data);
if (retval != ERROR_OK)
return retval;
@@ -775,29 +1096,50 @@ 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);
+ 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];
+ if (data[0] == 1 || data[0] == 2) {
+ uint16_t caps = data[1];
+ if (data[0] == 2)
+ caps |= (uint16_t)data[2] << 8;
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]);
+ for (unsigned int i = 0; i < INFO_CAPS__NUM_CAPS; ++i) {
+ if (caps & BIT(i))
+ LOG_INFO("CMSIS-DAP: %s", info_caps_str[i]);
+ }
}
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);
+ 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",
@@ -818,24 +1160,26 @@ static int cmsis_dap_swd_switch_seq(enum swd_special_seq seq)
unsigned int s_len;
int retval;
- if ((output_pins & (SWJ_PIN_SRST | SWJ_PIN_TRST)) == (SWJ_PIN_SRST | SWJ_PIN_TRST)) {
+ if (seq != LINE_RESET &&
+ (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();
+ 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);
+ retval = cmsis_dap_cmd_dap_connect(CONNECT_SWD);
if (retval != ERROR_OK)
return retval;
}
switch (seq) {
case LINE_RESET:
- LOG_DEBUG("SWD line reset");
+ LOG_DEBUG_IO("SWD line reset");
s = swd_seq_line_reset;
s_len = swd_seq_line_reset_len;
break;
@@ -844,35 +1188,53 @@ static int cmsis_dap_swd_switch_seq(enum swd_special_seq seq)
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;
+ case DORMANT_TO_JTAG:
+ LOG_DEBUG("DORMANT-to-JTAG");
+ s = swd_seq_dormant_to_jtag;
+ s_len = swd_seq_dormant_to_jtag_len;
+ break;
default:
LOG_ERROR("Sequence %d not supported", seq);
return ERROR_FAIL;
}
- retval = cmsis_dap_cmd_DAP_SWJ_Sequence(s_len, s);
+ 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());
+ return cmsis_dap_cmd_dap_swj_clock(adapter_get_speed_khz());
}
static int cmsis_dap_swd_open(void)
{
- int retval;
-
if (!(cmsis_dap_handle->caps & INFO_CAPS_SWD)) {
LOG_ERROR("CMSIS-DAP: SWD not supported");
return ERROR_JTAG_DEVICE_ERROR;
}
- retval = cmsis_dap_cmd_DAP_Connect(CONNECT_SWD);
+ int retval = cmsis_dap_cmd_dap_connect(CONNECT_SWD);
if (retval != ERROR_OK)
return retval;
@@ -884,13 +1246,14 @@ static int cmsis_dap_swd_open(void)
static int cmsis_dap_init(void)
{
- int retval;
uint8_t *data;
- retval = cmsis_dap_open();
+ 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;
@@ -914,7 +1277,7 @@ static int cmsis_dap_init(void)
return ERROR_JTAG_DEVICE_ERROR;
}
- retval = cmsis_dap_cmd_DAP_Connect(CONNECT_JTAG);
+ retval = cmsis_dap_cmd_dap_connect(CONNECT_JTAG);
if (retval != ERROR_OK)
return retval;
@@ -924,105 +1287,105 @@ static int cmsis_dap_init(void)
/* 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);
+ retval = cmsis_dap_cmd_dap_info(INFO_ID_PKT_SZ, &data);
if (retval != ERROR_OK)
- return retval;
+ 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) {
+ 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;
- /* 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;
-
- if (cmsis_dap_handle->packet_size != pkt_sz + 1) {
- /* reallocate buffer */
- cmsis_dap_handle->packet_size = pkt_sz + 1;
- cmsis_dap_handle->packet_buffer = realloc(cmsis_dap_handle->packet_buffer,
- cmsis_dap_handle->packet_size);
- if (cmsis_dap_handle->packet_buffer == NULL) {
- LOG_ERROR("unable to reallocate memory");
- return ERROR_FAIL;
- }
+ LOG_DEBUG("CMSIS-DAP: Packet Size = %" PRIu16, pkt_sz);
}
-
- LOG_DEBUG("CMSIS-DAP: Packet Size = %" PRId16, pkt_sz);
}
+ /* Maximal number of transfers which fit to one packet:
+ * Limited by response size: 3 bytes of response header + 4 per read
+ * Plus writes to full command size: 3 bytes cmd header + 1 per read + 5 per write */
+ tfer_max_command_size = cmsis_dap_handle->packet_usable_size;
+ tfer_max_response_size = cmsis_dap_handle->packet_usable_size;
+ unsigned int max_reads = tfer_max_response_size / 4;
+ pending_queue_len = max_reads + (tfer_max_command_size - max_reads) / 5;
+ cmsis_dap_handle->write_count = 0;
+ cmsis_dap_handle->read_count = 0;
+
/* INFO_ID_PKT_CNT - byte */
- retval = cmsis_dap_cmd_DAP_Info(INFO_ID_PKT_CNT, &data);
+ retval = cmsis_dap_cmd_dap_info(INFO_ID_PKT_CNT, &data);
if (retval != ERROR_OK)
- return retval;
+ goto init_err;
if (data[0] == 1) { /* byte */
- int pkt_cnt = data[1];
+ unsigned 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("CMSIS-DAP: Packet Count = %u", 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_DEBUG("Allocating FIFO for %u pending packets", cmsis_dap_handle->packet_count);
+ for (unsigned int i = 0; i < cmsis_dap_handle->packet_count; i++) {
+ cmsis_dap_handle->pending_fifo[i].transfers = malloc(pending_queue_len
+ * sizeof(struct pending_transfer_result));
+ if (!cmsis_dap_handle->pending_fifo[i].transfers) {
LOG_ERROR("Unable to allocate memory for CMSIS-DAP queue");
- return ERROR_FAIL;
+ retval = ERROR_FAIL;
+ goto init_err;
}
}
-
- retval = cmsis_dap_get_status();
- if (retval != ERROR_OK)
- return ERROR_FAIL;
+ /* 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());
+ retval = cmsis_dap_cmd_dap_swj_clock(adapter_get_speed_khz());
if (retval != ERROR_OK)
- return ERROR_FAIL;
+ 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);
+ retval = cmsis_dap_cmd_dap_tfer_configure(0, 64, 0);
if (retval != ERROR_OK)
- return ERROR_FAIL;
+ 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 */
+ retval = cmsis_dap_cmd_dap_swd_configure(0); /* 1 TRN, no Data Phase */
if (retval != ERROR_OK)
- return ERROR_FAIL;
+ goto init_err;
}
/* Both LEDs on */
- retval = cmsis_dap_cmd_DAP_LED(LED_ID_CONNECT, LED_ON);
- if (retval != ERROR_OK)
- return ERROR_FAIL;
-
- retval = cmsis_dap_cmd_DAP_LED(LED_ID_RUN, LED_ON);
- if (retval != ERROR_OK)
- return ERROR_FAIL;
+ /* 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);
+ retval = cmsis_dap_cmd_dap_swj_pins(0, SWJ_PIN_SRST, 0, NULL);
if (retval != ERROR_OK)
- return ERROR_FAIL;
+ 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)
@@ -1033,10 +1396,11 @@ static int cmsis_dap_swd_init(void)
static int cmsis_dap_quit(void)
{
- cmsis_dap_cmd_DAP_Disconnect();
+ 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_cmd_dap_led(LED_ID_RUN, LED_OFF);
+ cmsis_dap_cmd_dap_led(LED_ID_CONNECT, LED_OFF);
cmsis_dap_close(cmsis_dap_handle);
@@ -1054,7 +1418,7 @@ static int cmsis_dap_reset(int trst, int srst)
if (!trst)
output_pins |= SWJ_PIN_TRST;
- int retval = cmsis_dap_cmd_DAP_SWJ_Pins(output_pins,
+ 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");
@@ -1064,7 +1428,7 @@ static int cmsis_dap_reset(int trst, int srst)
static void cmsis_dap_execute_sleep(struct jtag_command *cmd)
{
#if 0
- int retval = cmsis_dap_cmd_DAP_Delay(cmd->cmd.sleep->us);
+ int retval = cmsis_dap_cmd_dap_delay(cmd->cmd.sleep->us);
if (retval != ERROR_OK)
#endif
jtag_sleep(cmd->cmd.sleep->us);
@@ -1075,10 +1439,11 @@ static int cmsis_dap_execute_tlr_reset(struct jtag_command *cmd)
{
LOG_INFO("cmsis-dap JTAG TLR_RESET");
uint8_t seq = 0xff;
- int ret = cmsis_dap_cmd_DAP_SWJ_Sequence(8, &seq);
- if (ret == ERROR_OK)
+
+ int retval = cmsis_dap_cmd_dap_swj_sequence(8, &seq);
+ if (retval == ERROR_OK)
tap_set_state(TAP_RESET);
- return ret;
+ return retval;
}
/* Set new end state */
@@ -1093,7 +1458,7 @@ static void cmsis_dap_end_state(tap_state_t state)
}
#ifdef SPRINT_BINARY
-static void sprint_binary(char *s, const uint8_t *buf, int offset, int len)
+static void sprint_binary(char *s, const uint8_t *buf, unsigned int offset, unsigned int len)
{
if (!len)
return;
@@ -1104,7 +1469,7 @@ static void sprint_binary(char *s, const uint8_t *buf, int offset, int len)
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) {
+ for (unsigned int i = offset; i < offset + len; ++i) {
uint8_t c = buf[i / 8], mask = 1 << (i % 8);
if ((i != offset) && !(i % 8))
putchar(' ');
@@ -1122,18 +1487,18 @@ static void debug_parse_cmsis_buf(const uint8_t *cmd, int cmdlen)
for (int i = 0; i < cmdlen; ++i)
printf(" %02x", cmd[i]);
printf("\n");
- switch (cmd[1]) {
+ switch (cmd[0]) {
case CMD_DAP_JTAG_SEQ: {
- printf("cmsis-dap jtag sequence command %02x (n=%d)\n", cmd[1], cmd[2]);
+ printf("cmsis-dap jtag sequence command %02x (n=%d)\n", cmd[0], cmd[1]);
/*
- * #2 = number of sequences
- * #3 = sequence info 1
- * #4...4+n_bytes-1 = sequence 1
+ * #1 = number of sequences
+ * #2 = sequence info 1
+ * #3...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) {
+ int pos = 2;
+ for (int seq = 0; seq < cmd[1]; ++seq) {
uint8_t info = cmd[pos++];
int len = info & DAP_JTAG_SEQ_TCK;
if (len == 0)
@@ -1167,20 +1532,21 @@ static void cmsis_dap_flush(void)
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);
- /* prep CMSIS-DAP packet */
- uint8_t *buffer = cmsis_dap_handle->packet_buffer;
- buffer[0] = 0; /* report number */
- buffer[1] = CMD_DAP_JTAG_SEQ;
- buffer[2] = queued_seq_count;
- memcpy(buffer + 3, queued_seq_buf, queued_seq_buf_end);
+ /* 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(buffer, queued_seq_buf_end + 3);
+ 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 + 3);
- if (retval != ERROR_OK || buffer[1] != DAP_OK) {
+ 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);
}
@@ -1188,7 +1554,7 @@ static void cmsis_dap_flush(void)
#ifdef CMSIS_DAP_JTAG_DEBUG
LOG_DEBUG_IO("USB response buf:");
for (int c = 0; c < queued_seq_buf_end + 3; ++c)
- printf("%02X ", buffer[c]);
+ printf("%02X ", resp[c]);
printf("\n");
#endif
@@ -1199,10 +1565,10 @@ static void cmsis_dap_flush(void)
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 ", buffer[2+scan->first+b]);
+ printf("%02X ", resp[2+scan->first+b]);
printf("\n");
#endif
- bit_copy(scan->buffer, scan->buffer_offset, buffer + 2 + scan->first, 0, scan->length);
+ bit_copy(scan->buffer, scan->buffer_offset, &resp[2 + scan->first], 0, scan->length);
}
/* reset */
@@ -1217,10 +1583,11 @@ static void cmsis_dap_flush(void)
* 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)
+static void cmsis_dap_add_jtag_sequence(unsigned int s_len, const uint8_t *sequence,
+ unsigned int s_offset, bool tms,
+ uint8_t *tdo_buffer, unsigned int tdo_buffer_offset)
{
- LOG_DEBUG_IO("[at %d] %d bits, tms %s, seq offset %d, tdo buf %p, tdo offset %d",
+ LOG_DEBUG_IO("[at %d] %u bits, tms %s, seq offset %u, tdo buf %p, tdo offset %u",
queued_seq_buf_end,
s_len, tms ? "HIGH" : "LOW", s_offset, tdo_buffer, tdo_buffer_offset);
@@ -1229,25 +1596,25 @@ static void cmsis_dap_add_jtag_sequence(int s_len, const uint8_t *sequence, int
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;
+ for (unsigned int offset = 0; offset < s_len; offset += 64) {
+ unsigned 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);
+ LOG_DEBUG_IO("Splitting long jtag sequence: %u-bit chunk starting at offset %u", len, offset);
cmsis_dap_add_jtag_sequence(
len,
sequence,
s_offset + offset,
tms,
tdo_buffer,
- tdo_buffer == NULL ? 0 : (tdo_buffer_offset + offset)
+ !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);
+ unsigned 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();
@@ -1257,17 +1624,17 @@ static void cmsis_dap_add_jtag_sequence(int s_len, const uint8_t *sequence, int
/* control byte */
queued_seq_buf[queued_seq_buf_end] =
(tms ? DAP_JTAG_SEQ_TMS : 0) |
- (tdo_buffer != NULL ? DAP_JTAG_SEQ_TDO : 0) |
+ (tdo_buffer ? DAP_JTAG_SEQ_TDO : 0) |
(s_len == 64 ? 0 : s_len);
- if (sequence != NULL)
+ 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 != NULL) {
+ 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);
@@ -1295,11 +1662,8 @@ static void cmsis_dap_add_tms_sequence(const uint8_t *sequence, int s_len)
/* Move to the end state by queuing a sequence to clock into TMS */
static void cmsis_dap_state_move(void)
{
- uint8_t tms_scan;
- uint8_t tms_scan_bits;
-
- tms_scan = tap_get_tms_path(tap_get_state(), tap_get_end_state());
- tms_scan_bits = tap_get_tms_path_len(tap_get_state(), tap_get_end_state());
+ 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()),
@@ -1414,11 +1778,10 @@ static void cmsis_dap_execute_scan(struct jtag_command *cmd)
static void cmsis_dap_pathmove(int num_states, tap_state_t *path)
{
- int i;
uint8_t tms0 = 0x00;
uint8_t tms1 = 0xff;
- for (i = 0; i < num_states; i++) {
+ 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))
@@ -1446,12 +1809,10 @@ static void cmsis_dap_execute_pathmove(struct jtag_command *cmd)
static void cmsis_dap_stableclocks(int num_cycles)
{
- int i;
-
uint8_t tms = tap_get_state() == TAP_RESET;
/* TODO: Perform optimizations? */
/* Execute num_cycles. */
- for (i = 0; i < num_cycles; i++)
+ for (int i = 0; i < num_cycles; i++)
cmsis_dap_add_tms_sequence(&tms, 1);
}
@@ -1491,7 +1852,7 @@ static void cmsis_dap_execute_stableclocks(struct jtag_command *cmd)
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);
+ 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,
@@ -1532,7 +1893,7 @@ static int cmsis_dap_execute_queue(void)
{
struct jtag_command *cmd = jtag_command_queue;
- while (cmd != NULL) {
+ while (cmd) {
cmsis_dap_execute_command(cmd);
cmd = cmd->next;
}
@@ -1544,15 +1905,12 @@ static int cmsis_dap_execute_queue(void)
static int cmsis_dap_speed(int speed)
{
- if (speed > DAP_MAX_CLOCK)
- LOG_INFO("High speed (adapter speed %d) may be limited by adapter firmware.", 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);
+ return cmsis_dap_cmd_dap_swj_clock(speed);
}
static int cmsis_dap_speed_div(int speed, int *khz)
@@ -1567,6 +1925,157 @@ static int cmsis_dap_khz(int khz, int *jtag_speed)
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)
@@ -1577,24 +2086,21 @@ COMMAND_HANDLER(cmsis_dap_handle_info_command)
COMMAND_HANDLER(cmsis_dap_handle_cmd_command)
{
- int retval;
- unsigned i;
- uint8_t *buffer = cmsis_dap_handle->packet_buffer;
-
- buffer[0] = 0; /* report number */
+ uint8_t *command = cmsis_dap_handle->command;
- for (i = 0; i < CMD_ARGC; i++)
- buffer[i + 1] = strtoul(CMD_ARGV[i], NULL, 16);
+ for (unsigned i = 0; i < CMD_ARGC; i++)
+ COMMAND_PARSE_NUMBER(u8, CMD_ARGV[i], command[i]);
- retval = cmsis_dap_xfer(cmsis_dap_handle, CMD_ARGC + 1);
+ 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,
- buffer[1], buffer[2], buffer[3], buffer[4]);
+ resp[1], resp[2], resp[3], resp[4]);
return ERROR_OK;
}
@@ -1602,12 +2108,12 @@ COMMAND_HANDLER(cmsis_dap_handle_cmd_command)
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 "
+ 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");
+ LOG_WARNING("incomplete cmsis-dap vid_pid configuration directive");
if (CMD_ARGC < 2)
return ERROR_COMMAND_SYNTAX_ERROR;
/* remove the incomplete trailing id */
@@ -1629,16 +2135,6 @@ COMMAND_HANDLER(cmsis_dap_handle_vid_pid_command)
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 ");
-
- return ERROR_OK;
-}
-
COMMAND_HANDLER(cmsis_dap_handle_backend_command)
{
if (CMD_ARGC == 1) {
@@ -1652,10 +2148,10 @@ COMMAND_HANDLER(cmsis_dap_handle_backend_command)
}
}
- LOG_ERROR("invalid backend argument to cmsis_dap_backend ");
+ LOG_ERROR("invalid backend argument to cmsis-dap backend ");
}
} else {
- LOG_ERROR("expected exactly one argument to cmsis_dap_backend ");
+ LOG_ERROR("expected exactly one argument to cmsis-dap backend ");
}
return ERROR_OK;
@@ -1676,34 +2172,15 @@ static const struct command_registration cmsis_dap_subcommand_handlers[] = {
.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 = "",
- .chain = cmsis_dap_subcommand_handlers,
- },
{
- .name = "cmsis_dap_vid_pid",
+ .name = "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)* ",
+ .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",
+ .name = "backend",
.handler = &cmsis_dap_handle_backend_command,
.mode = COMMAND_CONFIG,
.help = "set the communication backend to use (USB bulk or HID).",
@@ -1711,7 +2188,7 @@ static const struct command_registration cmsis_dap_command_handlers[] = {
},
#if BUILD_CMSIS_DAP_USB
{
- .name = "cmsis_dap_usb",
+ .name = "usb",
.chain = cmsis_dap_usb_subcommand_handlers,
.mode = COMMAND_ANY,
.help = "USB bulk backend-specific commands",
@@ -1721,6 +2198,18 @@ static const struct command_registration cmsis_dap_command_handlers[] = {
COMMAND_REGISTRATION_DONE
};
+
+static const struct command_registration cmsis_dap_command_handlers[] = {
+ {
+ .name = "cmsis-dap",
+ .mode = COMMAND_ANY,
+ .help = "perform CMSIS-DAP management",
+ .usage = "",
+ .chain = cmsis_dap_subcommand_handlers,
+ },
+ COMMAND_REGISTRATION_DONE
+};
+
static const struct swd_driver cmsis_dap_swd_driver = {
.init = cmsis_dap_swd_init,
.switch_seq = cmsis_dap_swd_switch_seq,
@@ -1747,6 +2236,8 @@ struct adapter_driver cmsis_dap_adapter_driver = {
.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,