* Copyright (C) 2008 by Spencer Oliver *
* spen@spen-soft.co.uk *
* *
+ * Copyright (C) 2011 by Jean-Christophe PLAGNIOL-VIILARD *
+ * plagnioj@jcrosoft.com *
+ * *
+ * Copyright (C) 2015 by Marc Schink *
+ * openocd-dev@marcschink.de *
+ * *
+ * Copyright (C) 2015 by Paul Fertser *
+ * fercerpav@gmail.com *
+ * *
* 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 *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
- * along with this program; if not, write to the *
- * Free Software Foundation, Inc., *
- * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
+ * along with this program. If not, see <http://www.gnu.org/licenses/>. *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
+#include <stdint.h>
+#include <math.h>
+
#include <jtag/interface.h>
+#include <jtag/swd.h>
#include <jtag/commands.h>
-#include "usb_common.h"
-
-
-#define VID 0x1366
-#define PID 0x0101
-
-#define JLINK_WRITE_ENDPOINT 0x02
-#define JLINK_READ_ENDPOINT 0x81
-
-static unsigned int jlink_write_ep = JLINK_WRITE_ENDPOINT;
-static unsigned int jlink_read_ep = JLINK_READ_ENDPOINT;
-static unsigned int jlink_hw_jtag_version = 2;
-
-#define JLINK_USB_TIMEOUT 1000
-
-// See Section 1.3.2 of the Segger JLink USB protocol manual
-/* 2048 is the max value we can use here */
-//#define JLINK_TAP_BUFFER_SIZE 2048
-#define JLINK_TAP_BUFFER_SIZE 256
-//#define JLINK_TAP_BUFFER_SIZE 384
-
-#define JLINK_IN_BUFFER_SIZE 2048
-#define JLINK_OUT_BUFFER_SIZE 2*2048 + 4
-#define JLINK_EMU_RESULT_BUFFER_SIZE 64
-
-/* Global USB buffers */
-static uint8_t usb_in_buffer[JLINK_IN_BUFFER_SIZE];
-static uint8_t usb_out_buffer[JLINK_OUT_BUFFER_SIZE];
-static uint8_t usb_emu_result_buffer[JLINK_EMU_RESULT_BUFFER_SIZE];
-
-/* Constants for JLink command */
-#define EMU_CMD_VERSION 0x01
-#define EMU_CMD_SET_SPEED 0x05
-#define EMU_CMD_GET_STATE 0x07
-#define EMU_CMD_HW_CLOCK 0xc8
-#define EMU_CMD_HW_TMS0 0xc9
-#define EMU_CMD_HW_TMS1 0xca
-#define EMU_CMD_HW_JTAG2 0xce
-#define EMU_CMD_HW_JTAG3 0xcf
-#define EMU_CMD_GET_MAX_MEM_BLOCK 0xd4
-#define EMU_CMD_HW_RESET0 0xdc
-#define EMU_CMD_HW_RESET1 0xdd
-#define EMU_CMD_HW_TRST0 0xde
-#define EMU_CMD_HW_TRST1 0xdf
-#define EMU_CMD_GET_CAPS 0xe8
-#define EMU_CMD_GET_HW_VERSION 0xf0
-
-/* bits return from EMU_CMD_GET_CAPS */
-#define EMU_CAP_GET_HW_VERSION 1
-#define EMU_CAP_GET_MAX_BLOCK_SIZE 11
-
-/* max speed 12MHz v5.0 jlink */
-#define JLINK_MAX_SPEED 12000
+#include <jtag/drivers/jtag_usb_common.h>
+
+#include <libjaylink/libjaylink.h>
+
+static struct jaylink_context *jayctx;
+static struct jaylink_device_handle *devh;
+static struct jaylink_connection conn;
+static struct jaylink_connection connlist[JAYLINK_MAX_CONNECTIONS];
+static enum jaylink_jtag_version jtag_command_version;
+static uint8_t caps[JAYLINK_DEV_EXT_CAPS_SIZE];
+
+static uint32_t serial_number;
+static bool use_serial_number;
+static bool use_usb_location;
+static enum jaylink_usb_address usb_address;
+static bool use_usb_address;
+static enum jaylink_target_interface iface = JAYLINK_TIF_JTAG;
+static bool trace_enabled;
+
+#define JLINK_MAX_SPEED 12000
+#define JLINK_TAP_BUFFER_SIZE 2048
+
+static unsigned int swd_buffer_size = JLINK_TAP_BUFFER_SIZE;
+
+/* 256 byte non-volatile memory */
+struct device_config {
+ uint8_t usb_address;
+ /* 0ffset 0x01 to 0x03 */
+ uint8_t reserved_1[3];
+ uint32_t target_power;
+ /* 0ffset 0x08 to 0x1f */
+ uint8_t reserved_2[24];
+ /* IP only for J-Link Pro */
+ uint8_t ip_address[4];
+ uint8_t subnet_mask[4];
+ /* 0ffset 0x28 to 0x2f */
+ uint8_t reserved_3[8];
+ uint8_t mac_address[6];
+ /* 0ffset 0x36 to 0xff */
+ uint8_t reserved_4[202];
+} __attribute__ ((packed));
+
+static struct device_config config;
+static struct device_config tmp_config;
/* Queue command functions */
static void jlink_end_state(tap_state_t state);
static void jlink_state_move(void);
static void jlink_path_move(int num_states, tap_state_t *path);
+static void jlink_stableclocks(int num_cycles);
static void jlink_runtest(int num_cycles);
-static void jlink_scan(bool ir_scan, enum scan_type type, uint8_t *buffer, int scan_size, struct scan_command *command);
static void jlink_reset(int trst, int srst);
-static void jlink_simple_command(uint8_t command);
-static int jlink_get_status(void);
+static int jlink_swd_run_queue(void);
+static void jlink_swd_queue_cmd(uint8_t cmd, uint32_t *dst, uint32_t data, uint32_t ap_delay_clk);
+static int jlink_swd_switch_seq(enum swd_special_seq seq);
/* J-Link tap buffer functions */
static void jlink_tap_init(void);
-static int jlink_tap_execute(void);
-static void jlink_tap_ensure_space(int scans, int bits);
-static void jlink_tap_append_step(int tms, int tdi);
-static void jlink_tap_append_scan(int length, uint8_t *buffer, struct scan_command *command);
-
-/* Jlink lowlevel functions */
-struct jlink {
- struct usb_dev_handle* usb_handle;
-};
-
-static struct jlink *jlink_usb_open(void);
-static void jlink_usb_close(struct jlink *jlink);
-static int jlink_usb_message(struct jlink *jlink, int out_length, int in_length);
-static int jlink_usb_write(struct jlink *jlink, int out_length);
-static int jlink_usb_read(struct jlink *jlink, int expected_size);
-static int jlink_usb_read_emu_result(struct jlink *jlink);
-
-/* helper functions */
-static int jlink_get_version_info(void);
-
-#ifdef _DEBUG_USB_COMMS_
-static void jlink_debug_buffer(uint8_t *buffer, int length);
-#endif
+static int jlink_flush(void);
+/**
+ * Queue data to go out and in, flushing the queue as many times as
+ * necessary.
+ *
+ * @param out A pointer to TDI data, if NULL, old stale data will be used.
+ * @param out_offset A bit offset for TDI data.
+ * @param tms_out A pointer to TMS data, if NULL, zeroes will be emitted.
+ * @param tms_offset A bit offset for TMS data.
+ * @param in A pointer to store TDO data to, if NULL the data will be discarded.
+ * @param in_offset A bit offset for TDO data.
+ * @param length Amount of bits to transfer out and in.
+ *
+ * @retval This function doesn't return any value.
+ */
+static void jlink_clock_data(const uint8_t *out, unsigned out_offset,
+ const uint8_t *tms_out, unsigned tms_offset,
+ uint8_t *in, unsigned in_offset,
+ unsigned length);
static enum tap_state jlink_last_state = TAP_RESET;
-
-static struct jlink* jlink_handle;
+static int queued_retval;
/***************************************************************************/
/* External interface implementation */
+static void jlink_execute_stableclocks(struct jtag_command *cmd)
+{
+ DEBUG_JTAG_IO("stableclocks %i cycles", cmd->cmd.runtest->num_cycles);
+ jlink_stableclocks(cmd->cmd.runtest->num_cycles);
+}
+
static void jlink_execute_runtest(struct jtag_command *cmd)
{
- DEBUG_JTAG_IO("runtest %i cycles, end in %i",
- cmd->cmd.runtest->num_cycles,
- cmd->cmd.runtest->end_state);
+ DEBUG_JTAG_IO("runtest %i cycles, end in %i", cmd->cmd.runtest->num_cycles,
+ cmd->cmd.runtest->end_state);
jlink_end_state(cmd->cmd.runtest->end_state);
-
jlink_runtest(cmd->cmd.runtest->num_cycles);
}
cmd->cmd.pathmove->num_states,
cmd->cmd.pathmove->path[cmd->cmd.pathmove->num_states - 1]);
- jlink_path_move(cmd->cmd.pathmove->num_states,
- cmd->cmd.pathmove->path);
+ jlink_path_move(cmd->cmd.pathmove->num_states, cmd->cmd.pathmove->path);
}
static void jlink_execute_scan(struct jtag_command *cmd)
{
- int scan_size;
- enum scan_type type;
- uint8_t *buffer;
+ DEBUG_JTAG_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;
+ }
- DEBUG_JTAG_IO("scan end in %s", tap_state_name(cmd->cmd.scan->end_state));
+ if (cmd->cmd.scan->ir_scan) {
+ if (tap_get_state() != TAP_IRSHIFT) {
+ jlink_end_state(TAP_IRSHIFT);
+ jlink_state_move();
+ }
+ } else {
+ if (tap_get_state() != TAP_DRSHIFT) {
+ jlink_end_state(TAP_DRSHIFT);
+ jlink_state_move();
+ }
+ }
jlink_end_state(cmd->cmd.scan->end_state);
- scan_size = jtag_build_buffer(cmd->cmd.scan, &buffer);
- DEBUG_JTAG_IO("scan input, length = %d", scan_size);
+ 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;
+ DEBUG_JTAG_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()) {
+ /* 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. */
+ jlink_clock_data(field->out_value,
+ 0,
+ NULL,
+ 0,
+ field->in_value,
+ 0,
+ field->num_bits - 1);
+ uint8_t last_bit = 0;
+ if (field->out_value)
+ bit_copy(&last_bit, 0, field->out_value, field->num_bits - 1, 1);
+ uint8_t tms_bits = 0x01;
+ jlink_clock_data(&last_bit,
+ 0,
+ &tms_bits,
+ 0,
+ field->in_value,
+ field->num_bits - 1,
+ 1);
+ tap_set_state(tap_state_transition(tap_get_state(), 1));
+ jlink_clock_data(NULL,
+ 0,
+ &tms_bits,
+ 1,
+ NULL,
+ 0,
+ 1);
+ tap_set_state(tap_state_transition(tap_get_state(), 0));
+ } else
+ jlink_clock_data(field->out_value,
+ 0,
+ NULL,
+ 0,
+ field->in_value,
+ 0,
+ field->num_bits);
+ }
-#ifdef _DEBUG_USB_COMMS_
- jlink_debug_buffer(buffer, (scan_size + 7) / 8);
-#endif
- type = jtag_scan_type(cmd->cmd.scan);
- jlink_scan(cmd->cmd.scan->ir_scan,
- type, buffer, scan_size, cmd->cmd.scan);
+ if (tap_get_state() != tap_get_end_state()) {
+ jlink_end_state(tap_get_end_state());
+ jlink_state_move();
+ }
+
+ DEBUG_JTAG_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 jlink_execute_reset(struct jtag_command *cmd)
{
- DEBUG_JTAG_IO("reset trst: %i srst %i",
- cmd->cmd.reset->trst, cmd->cmd.reset->srst);
+ DEBUG_JTAG_IO("reset trst: %i srst %i", cmd->cmd.reset->trst,
+ cmd->cmd.reset->srst);
- jlink_tap_execute();
+ jlink_flush();
jlink_reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst);
- jlink_tap_execute();
+ jlink_flush();
}
static void jlink_execute_sleep(struct jtag_command *cmd)
{
DEBUG_JTAG_IO("sleep %" PRIi32 "", cmd->cmd.sleep->us);
- jlink_tap_execute();
+ jlink_flush();
jtag_sleep(cmd->cmd.sleep->us);
}
-static void jlink_execute_command(struct jtag_command *cmd)
+static int jlink_execute_command(struct jtag_command *cmd)
{
- switch (cmd->type)
- {
- case JTAG_RUNTEST: jlink_execute_runtest(cmd); break;
- case JTAG_STATEMOVE: jlink_execute_statemove(cmd); break;
- case JTAG_PATHMOVE: jlink_execute_pathmove(cmd); break;
- case JTAG_SCAN: jlink_execute_scan(cmd); break;
- case JTAG_RESET: jlink_execute_reset(cmd); break;
- case JTAG_SLEEP: jlink_execute_sleep(cmd); break;
- default:
- LOG_ERROR("BUG: unknown JTAG command type encountered");
- exit(-1);
+ switch (cmd->type) {
+ case JTAG_STABLECLOCKS:
+ jlink_execute_stableclocks(cmd);
+ break;
+ case JTAG_RUNTEST:
+ jlink_execute_runtest(cmd);
+ break;
+ case JTAG_TLR_RESET:
+ jlink_execute_statemove(cmd);
+ break;
+ case JTAG_PATHMOVE:
+ jlink_execute_pathmove(cmd);
+ break;
+ case JTAG_SCAN:
+ jlink_execute_scan(cmd);
+ break;
+ case JTAG_RESET:
+ jlink_execute_reset(cmd);
+ break;
+ case JTAG_SLEEP:
+ jlink_execute_sleep(cmd);
+ break;
+ default:
+ LOG_ERROR("BUG: Unknown JTAG command type encountered.");
+ return ERROR_JTAG_QUEUE_FAILED;
}
+
+ return ERROR_OK;
}
static int jlink_execute_queue(void)
{
+ int ret;
struct jtag_command *cmd = jtag_command_queue;
- while (cmd != NULL)
- {
- jlink_execute_command(cmd);
+ while (cmd != NULL) {
+ ret = jlink_execute_command(cmd);
+
+ if (ret != ERROR_OK)
+ return ret;
+
cmd = cmd->next;
}
- return jlink_tap_execute();
+ return jlink_flush();
}
-/* Sets speed in kHz. */
static int jlink_speed(int speed)
{
- int result;
+ int ret;
+ struct jaylink_speed tmp;
+ int max_speed;
- if (speed > JLINK_MAX_SPEED)
- {
- LOG_INFO("Ignoring speed request: %dkHz exceeds %dkHz maximum",
- speed, JLINK_MAX_SPEED);
- return ERROR_OK;
+ if (jaylink_has_cap(caps, JAYLINK_DEV_CAP_GET_SPEEDS)) {
+ ret = jaylink_get_speeds(devh, &tmp);
+
+ if (ret != JAYLINK_OK) {
+ LOG_ERROR("jaylink_get_speeds() failed: %s.",
+ jaylink_strerror(ret));
+ return ERROR_JTAG_DEVICE_ERROR;
+ }
+
+ tmp.freq /= 1000;
+ max_speed = tmp.freq / tmp.div;
+ } else {
+ max_speed = JLINK_MAX_SPEED;
}
- /* check for RTCK setting */
- if (speed == 0)
- speed = -1;
+ if (!speed) {
+ if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_ADAPTIVE_CLOCKING)) {
+ LOG_ERROR("Adaptive clocking is not supported by the device.");
+ return ERROR_JTAG_NOT_IMPLEMENTED;
+ }
+
+ speed = JAYLINK_SPEED_ADAPTIVE_CLOCKING;
+ } else if (speed > max_speed) {
+ LOG_INFO("Reduced speed from %d kHz to %d kHz (maximum).", speed,
+ max_speed);
+ speed = max_speed;
+ }
- usb_out_buffer[0] = EMU_CMD_SET_SPEED;
- usb_out_buffer[1] = (speed >> 0) & 0xff;
- usb_out_buffer[2] = (speed >> 8) & 0xff;
+ ret = jaylink_set_speed(devh, speed);
- result = jlink_usb_write(jlink_handle, 3);
- if (result != 3)
- {
- LOG_ERROR("J-Link setting speed failed (%d)", result);
+ if (ret != JAYLINK_OK) {
+ LOG_ERROR("jaylink_set_speed() failed: %s.",
+ jaylink_strerror(ret));
return ERROR_JTAG_DEVICE_ERROR;
}
return ERROR_OK;
}
-static int jlink_speed_div(int speed, int* khz)
+static int jlink_speed_div(int speed, int *khz)
{
*khz = speed;
return ERROR_OK;
}
-static int jlink_init(void)
+static bool read_device_config(struct device_config *cfg)
{
- int i;
+ int ret;
- jlink_handle = jlink_usb_open();
+ ret = jaylink_read_raw_config(devh, (uint8_t *)cfg);
- if (jlink_handle == 0)
- {
- LOG_ERROR("Cannot find jlink Interface! Please check connection and permissions.");
- return ERROR_JTAG_INIT_FAILED;
+ if (ret != JAYLINK_OK) {
+ LOG_ERROR("jaylink_read_raw_config() failed: %s.",
+ jaylink_strerror(ret));
+ return false;
}
- /*
- * The next three instructions were added after discovering a problem while using an oscilloscope. For the V8
- * SAM-ICE dongle (and likely other j-link device variants), the reset line to the target microprocessor was found to
- * cycle only intermittently during emulator startup (even after encountering the downstream reset instruction later
- * in the code). This was found to create two issues: 1) In general it is a bad practice to not reset a CPU to a known
- * state when starting an emulator and 2) something critical happens inside the dongle when it does the first read
- * following a new USB session. Keeping the processor in reset during the first read collecting version information
- * seems to prevent errant "J-Link command EMU_CMD_VERSION failed" issues.
- */
+ if (cfg->usb_address == 0xff)
+ cfg->usb_address = 0x00;
- LOG_INFO("J-Link initialization started / target CPU reset initiated");
- jlink_simple_command(EMU_CMD_HW_TRST0);
- jlink_simple_command(EMU_CMD_HW_RESET0);
- usleep(1000);
+ if (cfg->target_power == 0xffffffff)
+ cfg->target_power = 0;
- jlink_hw_jtag_version = 2;
+ return true;
+}
- if (jlink_get_version_info() == ERROR_OK)
- {
- /* attempt to get status */
- jlink_get_status();
+static int select_interface(void)
+{
+ int ret;
+ uint32_t interfaces;
+
+ if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_SELECT_TIF)) {
+ if (iface != JAYLINK_TIF_JTAG) {
+ LOG_ERROR("Device supports JTAG transport only.");
+ return ERROR_JTAG_INIT_FAILED;
+ }
+
+ return ERROR_OK;
}
- LOG_INFO("J-Link JTAG Interface ready");
+ ret = jaylink_get_available_interfaces(devh, &interfaces);
- jlink_reset(0, 0);
- jtag_sleep(3000);
- jlink_tap_init();
- jlink_speed(jtag_get_speed());
+ if (ret != JAYLINK_OK) {
+ LOG_ERROR("jaylink_get_available_interfaces() failed: %s.",
+ jaylink_strerror(ret));
+ return ERROR_JTAG_INIT_FAILED;
+ }
- /* v5/6 jlink seems to have an issue if the first tap move
- * is not divisible by 8, so we send a TLR on first power up */
- for (i = 0; i < 8; i++) {
- jlink_tap_append_step(1, 0);
+ if (!(interfaces & (1 << iface))) {
+ LOG_ERROR("Selected transport is not supported by the device.");
+ return ERROR_JTAG_INIT_FAILED;
}
- jlink_tap_execute();
- return ERROR_OK;
-}
+ ret = jaylink_select_interface(devh, iface, NULL);
+
+ if (ret < 0) {
+ LOG_ERROR("jaylink_select_interface() failed: %s.",
+ jaylink_strerror(ret));
+ return ERROR_JTAG_INIT_FAILED;
+ }
-static int jlink_quit(void)
-{
- jlink_usb_close(jlink_handle);
return ERROR_OK;
}
-/***************************************************************************/
-/* Queue command implementations */
-
-static void jlink_end_state(tap_state_t state)
+static int jlink_register(void)
{
- 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);
- }
-}
+ int ret;
+ size_t i;
+ bool handle_found;
+ size_t count;
-/* Goes to the end state. */
-static void jlink_state_move(void)
-{
- int i;
- int tms = 0;
- 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());
+ if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_REGISTER))
+ return ERROR_OK;
- for (i = 0; i < tms_scan_bits; i++)
- {
- tms = (tms_scan >> i) & 1;
- jlink_tap_append_step(tms, 0);
- }
+ ret = jaylink_register(devh, &conn, connlist, &count);
- tap_set_state(tap_get_end_state());
-}
+ if (ret != JAYLINK_OK) {
+ LOG_ERROR("jaylink_register() failed: %s.", jaylink_strerror(ret));
+ return ERROR_FAIL;
+ }
-static void jlink_path_move(int num_states, tap_state_t *path)
-{
- int i;
+ handle_found = false;
- for (i = 0; i < num_states; i++)
- {
- if (path[i] == tap_state_transition(tap_get_state(), false))
- {
- jlink_tap_append_step(0, 0);
- }
- else if (path[i] == tap_state_transition(tap_get_state(), true))
- {
- jlink_tap_append_step(1, 0);
- }
- 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);
+ for (i = 0; i < count; i++) {
+ if (connlist[i].handle == conn.handle) {
+ handle_found = true;
+ break;
}
+ }
- tap_set_state(path[i]);
+ if (!handle_found) {
+ LOG_ERROR("Registration failed: maximum number of connections on the "
+ "device reached.");
+ return ERROR_FAIL;
}
- tap_set_end_state(tap_get_state());
+ return ERROR_OK;
}
-static void jlink_runtest(int num_cycles)
+/*
+ * Adjust the SWD transaction buffer size depending on the free device internal
+ * memory. This ensures that the SWD transactions sent to the device do not
+ * exceed the internal memory of the device.
+ */
+static bool adjust_swd_buffer_size(void)
{
- int i;
+ int ret;
+ uint32_t tmp;
- tap_state_t saved_end_state = tap_get_end_state();
+ if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_GET_FREE_MEMORY))
+ return true;
- jlink_tap_ensure_space(1,num_cycles + 16);
+ ret = jaylink_get_free_memory(devh, &tmp);
- /* only do a state_move when we're not already in IDLE */
- if (tap_get_state() != TAP_IDLE)
- {
- jlink_end_state(TAP_IDLE);
- jlink_state_move();
-// num_cycles--;
+ if (ret != JAYLINK_OK) {
+ LOG_ERROR("jaylink_get_free_memory() failed: %s.",
+ jaylink_strerror(ret));
+ return false;
}
- /* execute num_cycles */
- for (i = 0; i < num_cycles; i++)
- {
- jlink_tap_append_step(0, 0);
+ if (tmp < 143) {
+ LOG_ERROR("Not enough free device internal memory: %u bytes.", tmp);
+ return false;
}
- /* finish in end_state */
- jlink_end_state(saved_end_state);
- if (tap_get_state() != tap_get_end_state())
- {
- jlink_state_move();
+ tmp = MIN(JLINK_TAP_BUFFER_SIZE, (tmp - 16) / 2);
+
+ if (tmp != swd_buffer_size) {
+ swd_buffer_size = tmp;
+ LOG_DEBUG("Adjusted SWD transaction buffer size to %u bytes.",
+ swd_buffer_size);
}
+
+ return true;
}
-static void jlink_scan(bool ir_scan, enum scan_type type, uint8_t *buffer, int scan_size, struct scan_command *command)
+static int jaylink_log_handler(const struct jaylink_context *ctx,
+ enum jaylink_log_level level, const char *format, va_list args,
+ void *user_data)
{
- tap_state_t saved_end_state;
+ enum log_levels tmp;
- jlink_tap_ensure_space(1, scan_size + 16);
-
- saved_end_state = tap_get_end_state();
+ switch (level) {
+ case JAYLINK_LOG_LEVEL_ERROR:
+ tmp = LOG_LVL_ERROR;
+ break;
+ case JAYLINK_LOG_LEVEL_WARNING:
+ tmp = LOG_LVL_WARNING;
+ break;
+ /*
+ * Forward info messages to the debug output because they are more verbose
+ * than info messages of OpenOCD.
+ */
+ case JAYLINK_LOG_LEVEL_INFO:
+ case JAYLINK_LOG_LEVEL_DEBUG:
+ tmp = LOG_LVL_DEBUG;
+ break;
+ case JAYLINK_LOG_LEVEL_DEBUG_IO:
+ tmp = LOG_LVL_DEBUG_IO;
+ break;
+ default:
+ tmp = LOG_LVL_WARNING;
+ }
- /* Move to appropriate scan state */
- jlink_end_state(ir_scan ? TAP_IRSHIFT : TAP_DRSHIFT);
+ log_vprintf_lf(tmp, __FILE__, __LINE__, __func__, format, args);
- /* Only move if we're not already there */
- if (tap_get_state() != tap_get_end_state())
- jlink_state_move();
+ return 0;
+}
- jlink_end_state(saved_end_state);
+static bool jlink_usb_location_equal(struct jaylink_device *dev)
+{
+ int retval;
+ uint8_t bus;
+ uint8_t *ports;
+ size_t num_ports;
+ bool equal = false;
+
+ retval = jaylink_device_get_usb_bus_ports(dev, &bus, &ports, &num_ports);
+
+ if (retval == JAYLINK_ERR_NOT_SUPPORTED) {
+ return false;
+ } else if (retval != JAYLINK_OK) {
+ LOG_WARNING("jaylink_device_get_usb_bus_ports() failed: %s.",
+ jaylink_strerror(retval));
+ return false;
+ }
- /* Scan */
- jlink_tap_append_scan(scan_size, buffer, command);
+ equal = jtag_usb_location_equal(bus, ports, num_ports);
+ free(ports);
- /* We are in Exit1, go to Pause */
- jlink_tap_append_step(0, 0);
+ return equal;
+}
- tap_set_state(ir_scan ? TAP_IRPAUSE : TAP_DRPAUSE);
- if (tap_get_state() != tap_get_end_state())
- {
- jlink_state_move();
+static int jlink_init(void)
+{
+ int ret;
+ struct jaylink_device **devs;
+ unsigned int i;
+ bool found_device;
+ uint32_t tmp;
+ char *firmware_version;
+ struct jaylink_hardware_version hwver;
+ struct jaylink_hardware_status hwstatus;
+ enum jaylink_usb_address address;
+ size_t length;
+ size_t num_devices;
+ uint32_t host_interfaces;
+
+ LOG_DEBUG("Using libjaylink %s (compiled with %s).",
+ jaylink_version_package_get_string(), JAYLINK_VERSION_PACKAGE_STRING);
+
+ if (!jaylink_library_has_cap(JAYLINK_CAP_HIF_USB) && use_usb_address) {
+ LOG_ERROR("J-Link driver does not support USB devices.");
+ return ERROR_JTAG_INIT_FAILED;
}
-}
-static void jlink_reset(int trst, int srst)
-{
- LOG_DEBUG("trst: %i, srst: %i", trst, srst);
+ ret = jaylink_init(&jayctx);
- /* Signals are active low */
- if (srst == 0)
- {
- jlink_simple_command(EMU_CMD_HW_RESET1);
- }
- if (srst == 1)
- {
- jlink_simple_command(EMU_CMD_HW_RESET0);
+ if (ret != JAYLINK_OK) {
+ LOG_ERROR("jaylink_init() failed: %s.", jaylink_strerror(ret));
+ return ERROR_JTAG_INIT_FAILED;
}
- if (trst == 1)
- {
- jlink_simple_command(EMU_CMD_HW_TRST0);
- }
+ ret = jaylink_log_set_callback(jayctx, &jaylink_log_handler, NULL);
- if (trst == 0)
- {
- jlink_simple_command(EMU_CMD_HW_TRST1);
+ if (ret != JAYLINK_OK) {
+ LOG_ERROR("jaylink_log_set_callback() failed: %s.",
+ jaylink_strerror(ret));
+ jaylink_exit(jayctx);
+ return ERROR_JTAG_INIT_FAILED;
}
-}
-static void jlink_simple_command(uint8_t command)
-{
- int result;
+ host_interfaces = JAYLINK_HIF_USB;
- DEBUG_JTAG_IO("0x%02x", command);
+ if (use_serial_number)
+ host_interfaces |= JAYLINK_HIF_TCP;
- usb_out_buffer[0] = command;
- result = jlink_usb_write(jlink_handle, 1);
+ ret = jaylink_discovery_scan(jayctx, host_interfaces);
- if (result != 1)
- {
- LOG_ERROR("J-Link command 0x%02x failed (%d)", command, result);
+ if (ret != JAYLINK_OK) {
+ LOG_ERROR("jaylink_discovery_scan() failed: %s.",
+ jaylink_strerror(ret));
+ jaylink_exit(jayctx);
+ return ERROR_JTAG_INIT_FAILED;
}
-}
-static int jlink_get_status(void)
-{
- int result;
+ ret = jaylink_get_devices(jayctx, &devs, &num_devices);
+
+ if (ret != JAYLINK_OK) {
+ LOG_ERROR("jaylink_get_devices() failed: %s.", jaylink_strerror(ret));
+ jaylink_exit(jayctx);
+ return ERROR_JTAG_INIT_FAILED;
+ }
- jlink_simple_command(EMU_CMD_GET_STATE);
+ use_usb_location = (jtag_usb_get_location() != NULL);
- result = jlink_usb_read(jlink_handle, 8);
- if (result != 8)
- {
- LOG_ERROR("J-Link command EMU_CMD_GET_STATE failed (%d)\n", result);
- return ERROR_JTAG_DEVICE_ERROR;
+ if (!use_serial_number && !use_usb_address && !use_usb_location && num_devices > 1) {
+ LOG_ERROR("Multiple devices found, specify the desired device.");
+ jaylink_free_devices(devs, true);
+ jaylink_exit(jayctx);
+ return ERROR_JTAG_INIT_FAILED;
}
- int vref = usb_in_buffer[0] + (usb_in_buffer[1] << 8);
- LOG_INFO("Vref = %d.%d TCK = %d TDI = %d TDO = %d TMS = %d SRST = %d TRST = %d\n", \
- vref / 1000, vref % 1000, \
- usb_in_buffer[2], usb_in_buffer[3], usb_in_buffer[4], \
- usb_in_buffer[5], usb_in_buffer[6], usb_in_buffer[7]);
+ found_device = false;
- if (vref < 1500)
- LOG_ERROR("Vref too low. Check Target Power\n");
+ for (i = 0; devs[i]; i++) {
+ struct jaylink_device *dev = devs[i];
- return ERROR_OK;
-}
+ if (use_serial_number) {
+ ret = jaylink_device_get_serial_number(dev, &tmp);
-static int jlink_get_version_info(void)
-{
- int result;
- int len;
- uint32_t jlink_caps, jlink_max_size;
+ if (ret == JAYLINK_ERR_NOT_AVAILABLE) {
+ continue;
+ } else if (ret != JAYLINK_OK) {
+ LOG_WARNING("jaylink_device_get_serial_number() failed: %s.",
+ jaylink_strerror(ret));
+ continue;
+ }
- /* query hardware version */
- jlink_simple_command(EMU_CMD_VERSION);
+ if (serial_number != tmp)
+ continue;
+ }
- result = jlink_usb_read(jlink_handle, 2);
- if (2 != result)
- {
- LOG_ERROR("J-Link command EMU_CMD_VERSION failed (%d)\n", result);
- return ERROR_JTAG_DEVICE_ERROR;
+ if (use_usb_address) {
+ ret = jaylink_device_get_usb_address(dev, &address);
+
+ if (ret == JAYLINK_ERR_NOT_SUPPORTED) {
+ continue;
+ } else if (ret != JAYLINK_OK) {
+ LOG_WARNING("jaylink_device_get_usb_address() failed: %s.",
+ jaylink_strerror(ret));
+ continue;
+ }
+
+ if (usb_address != address)
+ continue;
+ }
+
+ if (use_usb_location && !jlink_usb_location_equal(dev))
+ continue;
+
+ ret = jaylink_open(dev, &devh);
+
+ if (ret == JAYLINK_OK) {
+ found_device = true;
+ break;
+ }
+
+ LOG_ERROR("Failed to open device: %s.", jaylink_strerror(ret));
}
- len = buf_get_u32(usb_in_buffer, 0, 16);
- if (len > JLINK_IN_BUFFER_SIZE)
- {
- LOG_ERROR("J-Link command EMU_CMD_VERSION impossible return length 0x%0x", len);
- len = JLINK_IN_BUFFER_SIZE;
+ jaylink_free_devices(devs, true);
+
+ if (!found_device) {
+ LOG_ERROR("No J-Link device found.");
+ jaylink_exit(jayctx);
+ return ERROR_JTAG_INIT_FAILED;
}
- result = jlink_usb_read(jlink_handle, len);
- if (result != len)
- {
- LOG_ERROR("J-Link command EMU_CMD_VERSION failed (%d)\n", result);
- return ERROR_JTAG_DEVICE_ERROR;
+ /*
+ * Be careful with changing the following initialization sequence because
+ * some devices are known to be sensitive regarding the order.
+ */
+
+ ret = jaylink_get_firmware_version(devh, &firmware_version, &length);
+
+ if (ret != JAYLINK_OK) {
+ LOG_ERROR("jaylink_get_firmware_version() failed: %s.",
+ jaylink_strerror(ret));
+ jaylink_close(devh);
+ jaylink_exit(jayctx);
+ return ERROR_JTAG_INIT_FAILED;
+ } else if (length > 0) {
+ LOG_INFO("%s", firmware_version);
+ free(firmware_version);
+ } else {
+ LOG_WARNING("Device responds empty firmware version string.");
}
- usb_in_buffer[result] = 0;
- LOG_INFO("%s", (char *)usb_in_buffer);
+ memset(caps, 0, JAYLINK_DEV_EXT_CAPS_SIZE);
+ ret = jaylink_get_caps(devh, caps);
+
+ if (ret != JAYLINK_OK) {
+ LOG_ERROR("jaylink_get_caps() failed: %s.", jaylink_strerror(ret));
+ jaylink_close(devh);
+ jaylink_exit(jayctx);
+ return ERROR_JTAG_INIT_FAILED;
+ }
- /* query hardware capabilities */
- jlink_simple_command(EMU_CMD_GET_CAPS);
+ if (jaylink_has_cap(caps, JAYLINK_DEV_CAP_GET_EXT_CAPS)) {
+ ret = jaylink_get_extended_caps(devh, caps);
- result = jlink_usb_read(jlink_handle, 4);
- if (4 != result)
- {
- LOG_ERROR("J-Link command EMU_CMD_GET_CAPS failed (%d)\n", result);
- return ERROR_JTAG_DEVICE_ERROR;
+ if (ret != JAYLINK_OK) {
+ LOG_ERROR("jaylink_get_extended_caps() failed: %s.",
+ jaylink_strerror(ret));
+ jaylink_close(devh);
+ jaylink_exit(jayctx);
+ return ERROR_JTAG_INIT_FAILED;
+ }
}
- jlink_caps = buf_get_u32(usb_in_buffer, 0, 32);
- LOG_INFO("JLink caps 0x%x", (unsigned)jlink_caps);
+ jtag_command_version = JAYLINK_JTAG_VERSION_2;
- if (jlink_caps & (1 << EMU_CAP_GET_HW_VERSION))
- {
- /* query hardware version */
- jlink_simple_command(EMU_CMD_GET_HW_VERSION);
+ if (jaylink_has_cap(caps, JAYLINK_DEV_CAP_GET_HW_VERSION)) {
+ ret = jaylink_get_hardware_version(devh, &hwver);
- result = jlink_usb_read(jlink_handle, 4);
- if (4 != result)
- {
- LOG_ERROR("J-Link command EMU_CMD_GET_HW_VERSION failed (%d)\n", result);
- return ERROR_JTAG_DEVICE_ERROR;
+ if (ret != JAYLINK_OK) {
+ LOG_ERROR("Failed to retrieve hardware version: %s.",
+ jaylink_strerror(ret));
+ jaylink_close(devh);
+ jaylink_exit(jayctx);
+ return ERROR_JTAG_INIT_FAILED;
}
- uint32_t jlink_hw_version = buf_get_u32(usb_in_buffer, 0, 32);
- uint32_t major_revision = (jlink_hw_version / 10000) % 100;
- if (major_revision >= 5)
- jlink_hw_jtag_version = 3;
+ LOG_INFO("Hardware version: %u.%02u", hwver.major, hwver.minor);
- LOG_INFO("JLink hw version %i", (int)jlink_hw_version);
+ if (hwver.major >= 5)
+ jtag_command_version = JAYLINK_JTAG_VERSION_3;
}
- if (jlink_caps & (1 << EMU_CAP_GET_MAX_BLOCK_SIZE))
- {
- /* query hardware maximum memory block */
- jlink_simple_command(EMU_CMD_GET_MAX_MEM_BLOCK);
+ if (iface == JAYLINK_TIF_SWD) {
+ /*
+ * Adjust the SWD transaction buffer size in case there is already
+ * allocated memory on the device. This happens for example if the
+ * memory for SWO capturing is still allocated because the software
+ * which used the device before has not been shut down properly.
+ */
+ if (!adjust_swd_buffer_size()) {
+ jaylink_close(devh);
+ jaylink_exit(jayctx);
+ return ERROR_JTAG_INIT_FAILED;
+ }
+ }
- result = jlink_usb_read(jlink_handle, 4);
- if (4 != result)
- {
- LOG_ERROR("J-Link command EMU_CMD_GET_MAX_MEM_BLOCK failed (%d)\n", result);
- return ERROR_JTAG_DEVICE_ERROR;
+ if (jaylink_has_cap(caps, JAYLINK_DEV_CAP_READ_CONFIG)) {
+ if (!read_device_config(&config)) {
+ LOG_ERROR("Failed to read device configuration data.");
+ jaylink_close(devh);
+ jaylink_exit(jayctx);
+ return ERROR_JTAG_INIT_FAILED;
}
- jlink_max_size = buf_get_u32(usb_in_buffer, 0, 32);
- LOG_INFO("JLink max mem block %i", (int)jlink_max_size);
+ memcpy(&tmp_config, &config, sizeof(struct device_config));
}
- return ERROR_OK;
-}
+ ret = jaylink_get_hardware_status(devh, &hwstatus);
-COMMAND_HANDLER(jlink_handle_jlink_info_command)
-{
- if (jlink_get_version_info() == ERROR_OK)
- {
- /* attempt to get status */
- jlink_get_status();
+ if (ret != JAYLINK_OK) {
+ LOG_ERROR("jaylink_get_hardware_status() failed: %s.",
+ jaylink_strerror(ret));
+ jaylink_close(devh);
+ jaylink_exit(jayctx);
+ return ERROR_JTAG_INIT_FAILED;
+ }
+
+ LOG_INFO("VTarget = %u.%03u V", hwstatus.target_voltage / 1000,
+ hwstatus.target_voltage % 1000);
+
+ conn.handle = 0;
+ conn.pid = 0;
+ strcpy(conn.hid, "0.0.0.0");
+ conn.iid = 0;
+ conn.cid = 0;
+
+ ret = jlink_register();
+
+ if (ret != ERROR_OK) {
+ jaylink_close(devh);
+ jaylink_exit(jayctx);
+ return ERROR_JTAG_INIT_FAILED;
+ }
+
+ ret = select_interface();
+
+ if (ret != ERROR_OK) {
+ jaylink_close(devh);
+ jaylink_exit(jayctx);
+ return ret;
+ }
+
+ jlink_reset(0, 0);
+ jtag_sleep(3000);
+ jlink_tap_init();
+
+ jlink_speed(jtag_get_speed_khz());
+
+ if (iface == JAYLINK_TIF_JTAG) {
+ /*
+ * J-Link devices with firmware version v5 and v6 seems to have an issue
+ * if the first tap move is not divisible by 8, so we send a TLR on
+ * first power up.
+ */
+ uint8_t tms = 0xff;
+ jlink_clock_data(NULL, 0, &tms, 0, NULL, 0, 8);
+
+ jlink_flush();
}
return ERROR_OK;
}
-COMMAND_HANDLER(jlink_handle_jlink_hw_jtag_command)
+static int jlink_quit(void)
{
- switch (CMD_ARGC) {
- case 0:
- command_print(CMD_CTX, "jlink hw jtag %i", jlink_hw_jtag_version);
- break;
- case 1: {
- int request_version = atoi(CMD_ARGV[0]);
- switch (request_version) {
- case 2: case 3:
- jlink_hw_jtag_version = request_version;
- break;
- default:
- return ERROR_COMMAND_SYNTAX_ERROR;
- }
- break;
+ int ret;
+ size_t count;
+
+ if (trace_enabled) {
+ ret = jaylink_swo_stop(devh);
+
+ if (ret != JAYLINK_OK)
+ LOG_ERROR("jaylink_swo_stop() failed: %s.", jaylink_strerror(ret));
}
- default:
- return ERROR_COMMAND_SYNTAX_ERROR;
+
+ if (jaylink_has_cap(caps, JAYLINK_DEV_CAP_REGISTER)) {
+ ret = jaylink_unregister(devh, &conn, connlist, &count);
+
+ if (ret != JAYLINK_OK)
+ LOG_ERROR("jaylink_unregister() failed: %s.",
+ jaylink_strerror(ret));
}
+ jaylink_close(devh);
+ jaylink_exit(jayctx);
+
return ERROR_OK;
}
-static const struct command_registration jlink_command_handlers[] = {
- {
- .name = "jlink_info",
- .handler = &jlink_handle_jlink_info_command,
- .mode = COMMAND_EXEC,
- .help = "show jlink info",
- },
- {
- .name = "jlink_hw_jtag",
- .handler = &jlink_handle_jlink_hw_jtag_command,
- .mode = COMMAND_EXEC,
- .help = "access J-Link HW JTAG command version",
- .usage = "[2|3]",
- },
- COMMAND_REGISTRATION_DONE
-};
-
-struct jtag_interface jlink_interface = {
- .name = "jlink",
+/***************************************************************************/
+/* Queue command implementations */
- .commands = jlink_command_handlers,
+static void jlink_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);
+ }
+}
- .execute_queue = &jlink_execute_queue,
- .speed = &jlink_speed,
- .speed_div = &jlink_speed_div,
- .khz = &jlink_khz,
+/* Goes to the end state. */
+static void jlink_state_move(void)
+{
+ uint8_t tms_scan;
+ uint8_t tms_scan_bits;
- .init = &jlink_init,
- .quit = &jlink_quit,
- };
+ 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());
-/***************************************************************************/
-/* J-Link tap functions */
+ jlink_clock_data(NULL, 0, &tms_scan, 0, NULL, 0, tms_scan_bits);
+ tap_set_state(tap_get_end_state());
+}
-static unsigned tap_length = 0;
-static uint8_t tms_buffer[JLINK_TAP_BUFFER_SIZE];
-static uint8_t tdi_buffer[JLINK_TAP_BUFFER_SIZE];
-static uint8_t tdo_buffer[JLINK_TAP_BUFFER_SIZE];
+static void jlink_path_move(int num_states, tap_state_t *path)
+{
+ int i;
+ uint8_t tms = 0xff;
-struct pending_scan_result {
- int first; /* First bit position in tdo_buffer to read */
- int length; /* Number of bits to read */
- struct scan_command *command; /* Corresponding scan command */
- uint8_t *buffer;
-};
+ for (i = 0; i < num_states; i++) {
+ if (path[i] == tap_state_transition(tap_get_state(), false))
+ jlink_clock_data(NULL, 0, NULL, 0, NULL, 0, 1);
+ else if (path[i] == tap_state_transition(tap_get_state(), true))
+ jlink_clock_data(NULL, 0, &tms, 0, NULL, 0, 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);
+ }
-#define MAX_PENDING_SCAN_RESULTS 256
+ tap_set_state(path[i]);
+ }
-static int pending_scan_results_length;
-static struct pending_scan_result pending_scan_results_buffer[MAX_PENDING_SCAN_RESULTS];
+ tap_set_end_state(tap_get_state());
+}
-static void jlink_tap_init(void)
+static void jlink_stableclocks(int num_cycles)
{
- tap_length = 0;
- pending_scan_results_length = 0;
+ int i;
+
+ uint8_t tms = tap_get_state() == TAP_RESET;
+ /* Execute num_cycles. */
+ for (i = 0; i < num_cycles; i++)
+ jlink_clock_data(NULL, 0, &tms, 0, NULL, 0, 1);
}
-static void jlink_tap_ensure_space(int scans, int bits)
+static void jlink_runtest(int num_cycles)
{
- int available_scans = MAX_PENDING_SCAN_RESULTS - pending_scan_results_length;
- int available_bits = JLINK_TAP_BUFFER_SIZE * 8 - tap_length - 32;
+ tap_state_t saved_end_state = tap_get_end_state();
- if (scans > available_scans || bits > available_bits)
- {
- jlink_tap_execute();
+ /* Only do a state_move when we're not already in IDLE. */
+ if (tap_get_state() != TAP_IDLE) {
+ jlink_end_state(TAP_IDLE);
+ jlink_state_move();
+ /* num_cycles--; */
}
+
+ jlink_stableclocks(num_cycles);
+
+ /* Finish in end_state. */
+ jlink_end_state(saved_end_state);
+
+ if (tap_get_state() != tap_get_end_state())
+ jlink_state_move();
}
-static void jlink_tap_append_step(int tms, int tdi)
+static void jlink_reset(int trst, int srst)
{
- int index = tap_length / 8;
+ LOG_DEBUG("TRST: %i, SRST: %i.", trst, srst);
- if (index >= JLINK_TAP_BUFFER_SIZE)
- {
- LOG_ERROR("jlink_tap_append_step: overflow");
- *(uint32_t *)0xFFFFFFFF = 0;
- exit(-1);
+ /* Signals are active low. */
+ if (srst == 0)
+ jaylink_set_reset(devh);
+
+ if (srst == 1)
+ jaylink_clear_reset(devh);
+
+ if (trst == 1)
+ jaylink_jtag_clear_trst(devh);
+
+ if (trst == 0)
+ jaylink_jtag_set_trst(devh);
+}
+
+COMMAND_HANDLER(jlink_usb_command)
+{
+ int tmp;
+
+ if (CMD_ARGC != 1) {
+ command_print(CMD, "Need exactly one argument for jlink usb.");
+ return ERROR_COMMAND_SYNTAX_ERROR;
}
- int bit_index = tap_length % 8;
- uint8_t bit = 1 << bit_index;
+ if (sscanf(CMD_ARGV[0], "%i", &tmp) != 1) {
+ command_print(CMD, "Invalid USB address: %s.", CMD_ARGV[0]);
+ return ERROR_FAIL;
+ }
- // we do not pad TMS, so be sure to initialize all bits
- if (0 == bit_index)
- {
- tms_buffer[index] = tdi_buffer[index] = 0;
+ if (tmp < JAYLINK_USB_ADDRESS_0 || tmp > JAYLINK_USB_ADDRESS_3) {
+ command_print(CMD, "Invalid USB address: %s.", CMD_ARGV[0]);
+ return ERROR_FAIL;
}
- if (tms)
- tms_buffer[index] |= bit;
- else
- tms_buffer[index] &= ~bit;
+ usb_address = tmp;
- if (tdi)
- tdi_buffer[index] |= bit;
- else
- tdi_buffer[index] &= ~bit;
+ use_serial_number = false;
+ use_usb_address = true;
- tap_length++;
+ return ERROR_OK;
}
-static void jlink_tap_append_scan(int length, uint8_t *buffer, struct scan_command *command)
+COMMAND_HANDLER(jlink_serial_command)
{
- struct pending_scan_result *pending_scan_result =
- &pending_scan_results_buffer[pending_scan_results_length];
- int i;
+ int ret;
+
+ if (CMD_ARGC != 1) {
+ command_print(CMD, "Need exactly one argument for jlink serial.");
+ return ERROR_COMMAND_SYNTAX_ERROR;
+ }
- pending_scan_result->first = tap_length;
- pending_scan_result->length = length;
- pending_scan_result->command = command;
- pending_scan_result->buffer = buffer;
+ ret = jaylink_parse_serial_number(CMD_ARGV[0], &serial_number);
- for (i = 0; i < length; i++)
- {
- int tms = (i < (length - 1)) ? 0 : 1;
- int tdi = (buffer[i / 8] & (1 << (i % 8))) != 0;
- jlink_tap_append_step(tms, tdi);
+ if (ret == JAYLINK_ERR) {
+ command_print(CMD, "Invalid serial number: %s.", CMD_ARGV[0]);
+ return ERROR_FAIL;
+ } else if (ret != JAYLINK_OK) {
+ command_print(CMD, "jaylink_parse_serial_number() failed: %s.",
+ jaylink_strerror(ret));
+ return ERROR_FAIL;
}
- pending_scan_results_length++;
+
+ use_serial_number = true;
+ use_usb_address = false;
+
+ return ERROR_OK;
}
-/* Pad and send a tap sequence to the device, and receive the answer.
- * For the purpose of padding we assume that we are in idle or pause state. */
-static int jlink_tap_execute(void)
+COMMAND_HANDLER(jlink_handle_hwstatus_command)
{
- int byte_length;
- int i;
- int result;
+ int ret;
+ struct jaylink_hardware_status status;
- if (!tap_length)
- return ERROR_OK;
+ ret = jaylink_get_hardware_status(devh, &status);
- /* JLink returns an extra NULL in packet when size of incoming
- * message is a multiple of 64, creates problems with USB comms.
- * WARNING: This will interfere with tap state counting. */
- while ((DIV_ROUND_UP(tap_length, 8) % 64) == 0)
- {
- jlink_tap_append_step((tap_get_state() == TAP_RESET)?1:0, 0);
+ if (ret != JAYLINK_OK) {
+ command_print(CMD, "jaylink_get_hardware_status() failed: %s.",
+ jaylink_strerror(ret));
+ return ERROR_FAIL;
}
- // number of full bytes (plus one if some would be left over)
- byte_length = DIV_ROUND_UP(tap_length, 8);
+ command_print(CMD, "VTarget = %u.%03u V",
+ status.target_voltage / 1000, status.target_voltage % 1000);
- bool use_jtag3 = jlink_hw_jtag_version >= 3;
- usb_out_buffer[0] = use_jtag3 ? EMU_CMD_HW_JTAG3 : EMU_CMD_HW_JTAG2;
- usb_out_buffer[1] = 0;
- usb_out_buffer[2] = (tap_length >> 0) & 0xff;
- usb_out_buffer[3] = (tap_length >> 8) & 0xff;
- memcpy(usb_out_buffer + 4, tms_buffer, byte_length);
- memcpy(usb_out_buffer + 4 + byte_length, tdi_buffer, byte_length);
+ command_print(CMD, "TCK = %u TDI = %u TDO = %u TMS = %u SRST = %u "
+ "TRST = %u", status.tck, status.tdi, status.tdo, status.tms,
+ status.tres, status.trst);
- jlink_last_state = jtag_debug_state_machine(tms_buffer, tdi_buffer,
- tap_length, jlink_last_state);
+ if (status.target_voltage < 1500)
+ command_print(CMD, "Target voltage too low. Check target power.");
- result = jlink_usb_message(jlink_handle, 4 + 2 * byte_length, byte_length);
- if (result != byte_length)
- {
- LOG_ERROR("jlink_tap_execute, wrong result %d (expected %d)", result, byte_length);
- jlink_tap_init();
- return ERROR_JTAG_QUEUE_FAILED;
+ return ERROR_OK;
+}
+
+COMMAND_HANDLER(jlink_handle_free_memory_command)
+{
+ int ret;
+ uint32_t tmp;
+
+ if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_GET_FREE_MEMORY)) {
+ command_print(CMD, "Retrieval of free memory is not supported by "
+ "the device.");
+ return ERROR_OK;
}
- memcpy(tdo_buffer, usb_in_buffer, byte_length);
+ ret = jaylink_get_free_memory(devh, &tmp);
- for (i = 0; i < pending_scan_results_length; i++)
- {
- struct pending_scan_result *pending_scan_result = &pending_scan_results_buffer[i];
- uint8_t *buffer = pending_scan_result->buffer;
- int length = pending_scan_result->length;
- int first = pending_scan_result->first;
- struct scan_command *command = pending_scan_result->command;
+ if (ret != JAYLINK_OK) {
+ command_print(CMD, "jaylink_get_free_memory() failed: %s.",
+ jaylink_strerror(ret));
+ return ERROR_FAIL;
+ }
- /* Copy to buffer */
- buf_set_buf(tdo_buffer, first, buffer, 0, length);
+ command_print(CMD, "Device has %u bytes of free memory.", tmp);
- DEBUG_JTAG_IO("pending scan result, length = %d", length);
+ return ERROR_OK;
+}
-#ifdef _DEBUG_USB_COMMS_
- jlink_debug_buffer(buffer, DIV_ROUND_UP(length, 8));
-#endif
+COMMAND_HANDLER(jlink_handle_jlink_jtag_command)
+{
+ int tmp;
+ int version;
+
+ if (!CMD_ARGC) {
+ switch (jtag_command_version) {
+ case JAYLINK_JTAG_VERSION_2:
+ version = 2;
+ break;
+ case JAYLINK_JTAG_VERSION_3:
+ version = 3;
+ break;
+ default:
+ return ERROR_FAIL;
+ }
- if (jtag_read_buffer(buffer, command) != ERROR_OK)
- {
- jlink_tap_init();
- return ERROR_JTAG_QUEUE_FAILED;
+ command_print(CMD, "JTAG command version: %i", version);
+ } else if (CMD_ARGC == 1) {
+ if (sscanf(CMD_ARGV[0], "%i", &tmp) != 1) {
+ command_print(CMD, "Invalid argument: %s.", CMD_ARGV[0]);
+ return ERROR_COMMAND_SYNTAX_ERROR;
}
- if (pending_scan_result->buffer != NULL)
- {
- free(pending_scan_result->buffer);
+ switch (tmp) {
+ case 2:
+ jtag_command_version = JAYLINK_JTAG_VERSION_2;
+ break;
+ case 3:
+ jtag_command_version = JAYLINK_JTAG_VERSION_3;
+ break;
+ default:
+ command_print(CMD, "Invalid argument: %s.", CMD_ARGV[0]);
+ return ERROR_COMMAND_SYNTAX_ERROR;
}
+ } else {
+ command_print(CMD, "Need exactly one argument for jlink jtag.");
+ return ERROR_COMMAND_SYNTAX_ERROR;
}
- jlink_tap_init();
return ERROR_OK;
}
-/*****************************************************************************/
-/* JLink USB low-level functions */
-
-static struct jlink* jlink_usb_open()
+COMMAND_HANDLER(jlink_handle_target_power_command)
{
- usb_init();
+ int ret;
+ int enable;
- const uint16_t vids[] = { VID, 0 };
- const uint16_t pids[] = { PID, 0 };
- struct usb_dev_handle *dev;
- if (jtag_usb_open(vids, pids, &dev) != ERROR_OK)
- return NULL;
-
- /* BE ***VERY CAREFUL*** ABOUT MAKING CHANGES IN THIS
- * AREA!!!!!!!!!!! The behavior of libusb is not completely
- * consistent across Windows, Linux, and Mac OS X platforms.
- * The actions taken in the following compiler conditionals may
- * not agree with published documentation for libusb, but were
- * found to be necessary through trials and tribulations. Even
- * little tweaks can break one or more platforms, so if you do
- * make changes test them carefully on all platforms before
- * committing them!
- */
+ if (CMD_ARGC != 1) {
+ command_print(CMD, "Need exactly one argument for jlink "
+ "targetpower.");
+ return ERROR_COMMAND_SYNTAX_ERROR;
+ }
-#if IS_WIN32 == 0
+ if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_SET_TARGET_POWER)) {
+ command_print(CMD, "Target power supply is not supported by the "
+ "device.");
+ return ERROR_OK;
+ }
- usb_reset(dev);
+ if (!strcmp(CMD_ARGV[0], "on")) {
+ enable = true;
+ } else if (!strcmp(CMD_ARGV[0], "off")) {
+ enable = false;
+ } else {
+ command_print(CMD, "Invalid argument: %s.", CMD_ARGV[0]);
+ return ERROR_FAIL;
+ }
-#if IS_DARWIN == 0
+ ret = jaylink_set_target_power(devh, enable);
- int timeout = 5;
- /* reopen jlink after usb_reset
- * on win32 this may take a second or two to re-enumerate */
- int retval;
- while ((retval = jtag_usb_open(vids, pids, &dev)) != ERROR_OK)
- {
- usleep(1000);
- timeout--;
- if (!timeout) {
- break;
- }
+ if (ret != JAYLINK_OK) {
+ command_print(CMD, "jaylink_set_target_power() failed: %s.",
+ jaylink_strerror(ret));
+ return ERROR_FAIL;
}
- if (ERROR_OK != retval)
- return NULL;
-#endif
-#endif
+ return ERROR_OK;
+}
- /* usb_set_configuration required under win32 */
- struct usb_device *udev = usb_device(dev);
- usb_set_configuration(dev, udev->config[0].bConfigurationValue);
- usb_claim_interface(dev, 0);
+static void show_config_usb_address(struct command_invocation *cmd)
+{
+ if (config.usb_address != tmp_config.usb_address)
+ command_print(cmd, "USB address: %u [%u]", config.usb_address,
+ tmp_config.usb_address);
+ else
+ command_print(cmd, "USB address: %u", config.usb_address);
+}
-#if 0
- /*
- * This makes problems under Mac OS X. And is not needed
- * under Windows. Hopefully this will not break a linux build
- */
- usb_set_altinterface(result->usb_handle, 0);
-#endif
- struct usb_interface *iface = udev->config->interface;
- struct usb_interface_descriptor *desc = iface->altsetting;
- for (int i = 0; i < desc->bNumEndpoints; i++)
- {
- uint8_t epnum = desc->endpoint[i].bEndpointAddress;
- bool is_input = epnum & 0x80;
- LOG_DEBUG("usb ep %s %02x", is_input ? "in" : "out", epnum);
- if (is_input)
- jlink_read_ep = epnum;
- else
- jlink_write_ep = epnum;
- }
+static void show_config_ip_address(struct command_invocation *cmd)
+{
+ if (!memcmp(config.ip_address, tmp_config.ip_address, 4))
+ command_print(cmd, "IP address: %d.%d.%d.%d",
+ config.ip_address[3], config.ip_address[2],
+ config.ip_address[1], config.ip_address[0]);
+ else
+ command_print(cmd, "IP address: %d.%d.%d.%d [%d.%d.%d.%d]",
+ config.ip_address[3], config.ip_address[2],
+ config.ip_address[1], config.ip_address[0],
+ tmp_config.ip_address[3], tmp_config.ip_address[2],
+ tmp_config.ip_address[1], tmp_config.ip_address[0]);
+
+ if (!memcmp(config.subnet_mask, tmp_config.subnet_mask, 4))
+ command_print(cmd, "Subnet mask: %d.%d.%d.%d",
+ config.subnet_mask[3], config.subnet_mask[2],
+ config.subnet_mask[1], config.subnet_mask[0]);
+ else
+ command_print(cmd, "Subnet mask: %d.%d.%d.%d [%d.%d.%d.%d]",
+ config.subnet_mask[3], config.subnet_mask[2],
+ config.subnet_mask[1], config.subnet_mask[0],
+ tmp_config.subnet_mask[3], tmp_config.subnet_mask[2],
+ tmp_config.subnet_mask[1], tmp_config.subnet_mask[0]);
+}
- struct jlink *result = malloc(sizeof(struct jlink));
- result->usb_handle = dev;
- return result;
+static void show_config_mac_address(struct command_invocation *cmd)
+{
+ if (!memcmp(config.mac_address, tmp_config.mac_address, 6))
+ command_print(cmd, "MAC address: %.02x:%.02x:%.02x:%.02x:%.02x:%.02x",
+ config.mac_address[5], config.mac_address[4],
+ config.mac_address[3], config.mac_address[2],
+ config.mac_address[1], config.mac_address[0]);
+ else
+ command_print(cmd, "MAC address: %.02x:%.02x:%.02x:%.02x:%.02x:%.02x "
+ "[%.02x:%.02x:%.02x:%.02x:%.02x:%.02x]",
+ config.mac_address[5], config.mac_address[4],
+ config.mac_address[3], config.mac_address[2],
+ config.mac_address[1], config.mac_address[0],
+ tmp_config.mac_address[5], tmp_config.mac_address[4],
+ tmp_config.mac_address[3], tmp_config.mac_address[2],
+ tmp_config.mac_address[1], tmp_config.mac_address[0]);
}
-static void jlink_usb_close(struct jlink *jlink)
+static void show_config_target_power(struct command_invocation *cmd)
{
- usb_close(jlink->usb_handle);
- free(jlink);
+ const char *target_power;
+ const char *current_target_power;
+
+ if (!config.target_power)
+ target_power = "off";
+ else
+ target_power = "on";
+
+ if (!tmp_config.target_power)
+ current_target_power = "off";
+ else
+ current_target_power = "on";
+
+ if (config.target_power != tmp_config.target_power)
+ command_print(cmd, "Target power supply: %s [%s]", target_power,
+ current_target_power);
+ else
+ command_print(cmd, "Target power supply: %s", target_power);
}
-/* Send a message and receive the reply. */
-static int jlink_usb_message(struct jlink *jlink, int out_length, int in_length)
+static void show_config(struct command_invocation *cmd)
{
- int result;
+ command_print(cmd, "J-Link device configuration:");
- result = jlink_usb_write(jlink, out_length);
- if (result != out_length)
- {
- LOG_ERROR("usb_bulk_write failed (requested=%d, result=%d)",
- out_length, result);
- return ERROR_JTAG_DEVICE_ERROR;
- }
+ show_config_usb_address(cmd);
- result = jlink_usb_read(jlink, in_length);
- if ((result != in_length) && (result != (in_length + 1)))
- {
- LOG_ERROR("usb_bulk_read failed (requested=%d, result=%d)",
- in_length, result);
- return ERROR_JTAG_DEVICE_ERROR;
+ if (jaylink_has_cap(caps, JAYLINK_DEV_CAP_SET_TARGET_POWER))
+ show_config_target_power(cmd);
+
+ if (jaylink_has_cap(caps, JAYLINK_DEV_CAP_ETHERNET)) {
+ show_config_ip_address(cmd);
+ show_config_mac_address(cmd);
}
+}
- if (jlink_hw_jtag_version < 3)
- return result;
+static int poll_trace(uint8_t *buf, size_t *size)
+{
+ int ret;
+ uint32_t length;
- int result2 = ERROR_OK;
- if (result == in_length)
- {
- /* Must read the result from the EMU too */
- result2 = jlink_usb_read_emu_result(jlink);
- if (1 != result2)
- {
- LOG_ERROR("jlink_usb_read_emu_result retried requested = 1, result=%d, in_length=%i", result2,in_length);
- /* Try again once, should only happen if (in_length%64 == 0) */
- result2 = jlink_usb_read_emu_result(jlink);
- if (1 != result2)
- {
- LOG_ERROR("jlink_usb_read_emu_result failed "
- "(requested = 1, result=%d)", result2);
- return ERROR_JTAG_DEVICE_ERROR;
- }
- }
+ length = *size;
- /* Check the result itself */
- result2 = usb_emu_result_buffer[0];
- }
- else
- {
- /* Save the result, then remove it from return value */
- result2 = usb_in_buffer[result--];
- }
+ ret = jaylink_swo_read(devh, buf, &length);
- if (result2)
- {
- LOG_ERROR("jlink_usb_message failed with result=%d)", result2);
- return ERROR_JTAG_DEVICE_ERROR;
+ if (ret != JAYLINK_OK) {
+ LOG_ERROR("jaylink_swo_read() failed: %s.", jaylink_strerror(ret));
+ return ERROR_FAIL;
}
- return result;
+ *size = length;
+
+ return ERROR_OK;
}
-/* calls the given usb_bulk_* function, allowing for the data to trickle in with some timeouts */
-static int usb_bulk_with_retries(
- int (*f)(usb_dev_handle *, int, char *, int, int),
- usb_dev_handle *dev, int ep,
- char *bytes, int size, int timeout)
+static uint32_t calculate_trace_buffer_size(void)
{
- int tries = 3, count = 0;
+ int ret;
+ uint32_t tmp;
- while (tries && (count < size))
- {
- int result = f(dev, ep, bytes + count, size - count, timeout);
- if (result > 0)
- count += result;
- else if ((-ETIMEDOUT != result) || !--tries)
- return result;
+ if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_GET_FREE_MEMORY))
+ return 0;
+
+ ret = jaylink_get_free_memory(devh, &tmp);
+
+ if (ret != JAYLINK_OK) {
+ LOG_ERROR("jaylink_get_free_memory() failed: %s.",
+ jaylink_strerror(ret));
+ return ERROR_FAIL;
}
- return count;
-}
-static int wrap_usb_bulk_write(usb_dev_handle *dev, int ep,
- char *buff, int size, int timeout)
-{
- /* usb_bulk_write() takes const char *buff */
- return usb_bulk_write(dev, ep, buff, size, timeout);
-}
+ if (tmp > 0x3fff || tmp <= 0x600)
+ tmp = tmp >> 1;
+ else
+ tmp = tmp - 0x400;
-static inline int usb_bulk_write_ex(usb_dev_handle *dev, int ep,
- char *bytes, int size, int timeout)
-{
- return usb_bulk_with_retries(&wrap_usb_bulk_write,
- dev, ep, bytes, size, timeout);
+ return tmp & 0xffffff00;
}
-static inline int usb_bulk_read_ex(usb_dev_handle *dev, int ep,
- char *bytes, int size, int timeout)
+static bool check_trace_freq(struct jaylink_swo_speed speed,
+ uint32_t trace_freq)
{
- return usb_bulk_with_retries(&usb_bulk_read,
- dev, ep, bytes, size, timeout);
+ double min;
+ double deviation;
+ uint32_t divider;
+
+ min = fabs(1.0 - (speed.freq / ((double)trace_freq * speed.min_div)));
+
+ for (divider = speed.min_div; divider < speed.max_div; divider++) {
+ deviation = fabs(1.0 - (speed.freq / ((double)trace_freq * divider)));
+
+ if (deviation < 0.03) {
+ LOG_DEBUG("Found suitable frequency divider %u with deviation of "
+ "%.02f %%.", divider, deviation);
+ return true;
+ }
+
+ if (deviation < min)
+ min = deviation;
+ }
+
+ LOG_ERROR("Selected trace frequency is not supported by the device. "
+ "Please choose a different trace frequency.");
+ LOG_ERROR("Maximum permitted deviation is 3.00 %%, but only %.02f %% "
+ "could be achieved.", min * 100);
+
+ return false;
}
-/* Write data from out_buffer to USB. */
-static int jlink_usb_write(struct jlink *jlink, int out_length)
+static int config_trace(bool enabled, enum tpiu_pin_protocol pin_protocol,
+ uint32_t port_size, unsigned int *trace_freq)
{
- int result;
+ int ret;
+ uint32_t buffer_size;
+ struct jaylink_swo_speed speed;
- if (out_length > JLINK_OUT_BUFFER_SIZE)
- {
- LOG_ERROR("jlink_write illegal out_length=%d (max=%d)", out_length, JLINK_OUT_BUFFER_SIZE);
- return -1;
+ if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_SWO)) {
+ LOG_ERROR("Trace capturing is not supported by the device.");
+ return ERROR_FAIL;
+ }
+
+ if (pin_protocol != TPIU_PIN_PROTOCOL_ASYNC_UART) {
+ LOG_ERROR("Selected pin protocol is not supported.");
+ return ERROR_FAIL;
}
- result = usb_bulk_write_ex(jlink->usb_handle, jlink_write_ep,
- (char *)usb_out_buffer, out_length, JLINK_USB_TIMEOUT);
+ trace_enabled = enabled;
- DEBUG_JTAG_IO("jlink_usb_write, out_length = %d, result = %d", out_length, result);
+ ret = jaylink_swo_stop(devh);
-#ifdef _DEBUG_USB_COMMS_
- jlink_debug_buffer(usb_out_buffer, out_length);
-#endif
- return result;
+ if (ret != JAYLINK_OK) {
+ LOG_ERROR("jaylink_swo_stop() failed: %s.", jaylink_strerror(ret));
+ return ERROR_FAIL;
+ }
+
+ if (!enabled) {
+ /*
+ * Adjust the SWD transaction buffer size as stopping SWO capturing
+ * deallocates device internal memory.
+ */
+ if (!adjust_swd_buffer_size())
+ return ERROR_FAIL;
+
+ return ERROR_OK;
+ }
+
+ buffer_size = calculate_trace_buffer_size();
+
+ if (!buffer_size) {
+ LOG_ERROR("Not enough free device memory to start trace capturing.");
+ return ERROR_FAIL;
+ }
+
+ ret = jaylink_swo_get_speeds(devh, JAYLINK_SWO_MODE_UART, &speed);
+
+ if (ret != JAYLINK_OK) {
+ LOG_ERROR("jaylink_swo_get_speeds() failed: %s.",
+ jaylink_strerror(ret));
+ return ERROR_FAIL;
+ }
+
+ if (!*trace_freq)
+ *trace_freq = speed.freq / speed.min_div;
+
+ if (!check_trace_freq(speed, *trace_freq))
+ return ERROR_FAIL;
+
+ LOG_DEBUG("Using %u bytes device memory for trace capturing.", buffer_size);
+
+ ret = jaylink_swo_start(devh, JAYLINK_SWO_MODE_UART, *trace_freq,
+ buffer_size);
+
+ if (ret != JAYLINK_OK) {
+ LOG_ERROR("jaylink_start_swo() failed: %s.", jaylink_strerror(ret));
+ return ERROR_FAIL;
+ }
+
+ /*
+ * Adjust the SWD transaction buffer size as starting SWO capturing
+ * allocates device internal memory.
+ */
+ if (!adjust_swd_buffer_size())
+ return ERROR_FAIL;
+
+ return ERROR_OK;
}
-/* Read data from USB into in_buffer. */
-static int jlink_usb_read(struct jlink *jlink, int expected_size)
+COMMAND_HANDLER(jlink_handle_config_usb_address_command)
{
- int result = usb_bulk_read_ex(jlink->usb_handle, jlink_read_ep,
- (char *)usb_in_buffer, expected_size, JLINK_USB_TIMEOUT);
+ uint8_t tmp;
- DEBUG_JTAG_IO("jlink_usb_read, result = %d", result);
+ if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_READ_CONFIG)) {
+ command_print(CMD, "Reading configuration is not supported by the "
+ "device.");
+ return ERROR_OK;
+ }
-#ifdef _DEBUG_USB_COMMS_
- jlink_debug_buffer(usb_in_buffer, result);
-#endif
- return result;
+ if (!CMD_ARGC) {
+ show_config_usb_address(CMD);
+ } else if (CMD_ARGC == 1) {
+ if (sscanf(CMD_ARGV[0], "%" SCNd8, &tmp) != 1) {
+ command_print(CMD, "Invalid USB address: %s.", CMD_ARGV[0]);
+ return ERROR_FAIL;
+ }
+
+ if (tmp > JAYLINK_USB_ADDRESS_3) {
+ command_print(CMD, "Invalid USB address: %u.", tmp);
+ return ERROR_FAIL;
+ }
+
+ tmp_config.usb_address = tmp;
+ } else {
+ command_print(CMD, "Need exactly one argument for jlink config "
+ "usb.");
+ return ERROR_COMMAND_SYNTAX_ERROR;
+ }
+
+ return ERROR_OK;
}
-/* Read the result from the previous EMU cmd into result_buffer. */
-static int jlink_usb_read_emu_result(struct jlink *jlink)
+COMMAND_HANDLER(jlink_handle_config_target_power_command)
{
- int result = usb_bulk_read_ex(jlink->usb_handle, jlink_read_ep,
- (char *)usb_emu_result_buffer, 1 /* JLINK_EMU_RESULT_BUFFER_SIZE */,
- JLINK_USB_TIMEOUT);
+ int enable;
- DEBUG_JTAG_IO("jlink_usb_read_result, result = %d", result);
+ if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_READ_CONFIG)) {
+ command_print(CMD, "Reading configuration is not supported by the "
+ "device.");
+ return ERROR_OK;
+ }
-#ifdef _DEBUG_USB_COMMS_
- jlink_debug_buffer(usb_emu_result_buffer, result);
-#endif
- return result;
-}
+ if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_SET_TARGET_POWER)) {
+ command_print(CMD, "Target power supply is not supported by the "
+ "device.");
+ return ERROR_OK;
+ }
+
+ if (!CMD_ARGC) {
+ show_config_target_power(CMD);
+ } else if (CMD_ARGC == 1) {
+ if (!strcmp(CMD_ARGV[0], "on")) {
+ enable = true;
+ } else if (!strcmp(CMD_ARGV[0], "off")) {
+ enable = false;
+ } else {
+ command_print(CMD, "Invalid argument: %s.", CMD_ARGV[0]);
+ return ERROR_FAIL;
+ }
+
+ tmp_config.target_power = enable;
+ } else {
+ command_print(CMD, "Need exactly one argument for jlink config "
+ "targetpower.");
+ return ERROR_COMMAND_SYNTAX_ERROR;
+ }
-#ifdef _DEBUG_USB_COMMS_
-#define BYTES_PER_LINE 16
+ return ERROR_OK;
+}
-static void jlink_debug_buffer(uint8_t *buffer, int length)
+COMMAND_HANDLER(jlink_handle_config_mac_address_command)
{
- char line[81];
- char s[4];
+ uint8_t addr[6];
int i;
- int j;
+ char *e;
+ const char *str;
- for (i = 0; i < length; i += BYTES_PER_LINE)
- {
- snprintf(line, 5, "%04x", i);
- for (j = i; j < i + BYTES_PER_LINE && j < length; j++)
- {
- snprintf(s, 4, " %02x", buffer[j]);
- strcat(line, s);
- }
- LOG_DEBUG("%s", line);
+ if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_READ_CONFIG)) {
+ command_print(CMD, "Reading configuration is not supported by the "
+ "device.");
+ return ERROR_OK;
+ }
+
+ if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_ETHERNET)) {
+ command_print(CMD, "Ethernet connectivity is not supported by the "
+ "device.");
+ return ERROR_OK;
}
-}
-#endif
+ if (!CMD_ARGC) {
+ show_config_mac_address(CMD);
+ } else if (CMD_ARGC == 1) {
+ str = CMD_ARGV[0];
+
+ if ((strlen(str) != 17) || (str[2] != ':' || str[5] != ':' || \
+ str[8] != ':' || str[11] != ':' || str[14] != ':')) {
+ command_print(CMD, "Invalid MAC address format.");
+ return ERROR_COMMAND_SYNTAX_ERROR;
+ }
+
+ for (i = 5; i >= 0; i--) {
+ addr[i] = strtoul(str, &e, 16);
+ str = e + 1;
+ }
+
+ if (!(addr[0] | addr[1] | addr[2] | addr[3] | addr[4] | addr[5])) {
+ command_print(CMD, "Invalid MAC address: zero address.");
+ return ERROR_COMMAND_SYNTAX_ERROR;
+ }
+
+ if (!(0x01 & addr[0])) {
+ command_print(CMD, "Invalid MAC address: multicast address.");
+ return ERROR_COMMAND_SYNTAX_ERROR;
+ }
+
+ memcpy(tmp_config.mac_address, addr, sizeof(addr));
+ } else {
+ command_print(CMD, "Need exactly one argument for jlink config "
+ " mac.");
+ return ERROR_COMMAND_SYNTAX_ERROR;
+ }
+
+ return ERROR_OK;
+}
+
+static bool string_to_ip(const char *s, uint8_t *ip, int *pos)
+{
+ uint8_t lip[4];
+ char *e;
+ const char *s_save = s;
+ int i;
+
+ if (!s)
+ return false;
+
+ for (i = 0; i < 4; i++) {
+ lip[i] = strtoul(s, &e, 10);
+
+ if (*e != '.' && i != 3)
+ return false;
+
+ s = e + 1;
+ }
+
+ *pos = e - s_save;
+ memcpy(ip, lip, sizeof(lip));
+
+ return true;
+}
+
+static void cpy_ip(uint8_t *dst, uint8_t *src)
+{
+ int i, j;
+
+ for (i = 0, j = 3; i < 4; i++, j--)
+ dst[i] = src[j];
+}
+
+COMMAND_HANDLER(jlink_handle_config_ip_address_command)
+{
+ uint8_t ip_address[4];
+ uint32_t subnet_mask = 0;
+ int i, len;
+ uint8_t subnet_bits = 24;
+
+ if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_READ_CONFIG)) {
+ command_print(CMD, "Reading configuration is not supported by the "
+ "device.");
+ return ERROR_OK;
+ }
+
+ if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_ETHERNET)) {
+ command_print(CMD, "Ethernet connectivity is not supported by the "
+ "device.");
+ return ERROR_OK;
+ }
+
+ if (!CMD_ARGC) {
+ show_config_ip_address(CMD);
+ } else {
+ if (!string_to_ip(CMD_ARGV[0], ip_address, &i))
+ return ERROR_COMMAND_SYNTAX_ERROR;
+
+ len = strlen(CMD_ARGV[0]);
+
+ /* Check for format A.B.C.D/E. */
+ if (i < len) {
+ if (CMD_ARGV[0][i] != '/')
+ return ERROR_COMMAND_SYNTAX_ERROR;
+
+ COMMAND_PARSE_NUMBER(u8, CMD_ARGV[0] + i + 1, subnet_bits);
+ } else if (CMD_ARGC > 1) {
+ if (!string_to_ip(CMD_ARGV[1], (uint8_t *)&subnet_mask, &i))
+ return ERROR_COMMAND_SYNTAX_ERROR;
+ }
+
+ if (!subnet_mask)
+ subnet_mask = (uint32_t)(subnet_bits < 32 ?
+ ((1ULL << subnet_bits) - 1) : 0xffffffff);
+
+ cpy_ip(tmp_config.ip_address, ip_address);
+ cpy_ip(tmp_config.subnet_mask, (uint8_t *)&subnet_mask);
+ }
+
+ return ERROR_OK;
+}
+
+COMMAND_HANDLER(jlink_handle_config_reset_command)
+{
+ if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_READ_CONFIG))
+ return ERROR_OK;
+
+ memcpy(&tmp_config, &config, sizeof(struct device_config));
+
+ return ERROR_OK;
+}
+
+
+COMMAND_HANDLER(jlink_handle_config_write_command)
+{
+ int ret;
+
+ if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_READ_CONFIG)) {
+ command_print(CMD, "Reading configuration is not supported by the "
+ "device.");
+ return ERROR_OK;
+ }
+
+ if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_WRITE_CONFIG)) {
+ command_print(CMD, "Writing configuration is not supported by the "
+ "device.");
+ return ERROR_OK;
+ }
+
+ if (!memcmp(&config, &tmp_config, sizeof(struct device_config))) {
+ command_print(CMD, "Operation not performed due to no changes in "
+ "the configuration.");
+ return ERROR_OK;
+ }
+
+ ret = jaylink_write_raw_config(devh, (const uint8_t *)&tmp_config);
+
+ if (ret != JAYLINK_OK) {
+ LOG_ERROR("jaylink_write_raw_config() failed: %s.",
+ jaylink_strerror(ret));
+ return ERROR_FAIL;
+ }
+
+ if (!read_device_config(&config)) {
+ LOG_ERROR("Failed to read device configuration for verification.");
+ return ERROR_FAIL;
+ }
+
+ if (memcmp(&config, &tmp_config, sizeof(struct device_config))) {
+ LOG_ERROR("Verification of device configuration failed. Please check "
+ "your device.");
+ return ERROR_FAIL;
+ }
+
+ memcpy(&tmp_config, &config, sizeof(struct device_config));
+ command_print(CMD, "The new device configuration applies after power "
+ "cycling the J-Link device.");
+
+ return ERROR_OK;
+}
+
+COMMAND_HANDLER(jlink_handle_config_command)
+{
+ if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_READ_CONFIG)) {
+ command_print(CMD, "Device doesn't support reading configuration.");
+ return ERROR_OK;
+ }
+
+ if (CMD_ARGC == 0)
+ show_config(CMD);
+
+ return ERROR_OK;
+}
+
+COMMAND_HANDLER(jlink_handle_emucom_write_command)
+{
+ int ret;
+ size_t tmp;
+ uint32_t channel;
+ uint32_t length;
+ uint8_t *buf;
+ size_t dummy;
+
+ if (CMD_ARGC != 2)
+ return ERROR_COMMAND_SYNTAX_ERROR;
+
+ if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_EMUCOM)) {
+ LOG_ERROR("Device does not support EMUCOM.");
+ return ERROR_FAIL;
+ }
+
+ COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], channel);
+
+ tmp = strlen(CMD_ARGV[1]);
+
+ if (tmp % 2 != 0) {
+ LOG_ERROR("Data must be encoded as hexadecimal pairs.");
+ return ERROR_COMMAND_ARGUMENT_INVALID;
+ }
+
+ buf = malloc(tmp / 2);
+
+ if (!buf) {
+ LOG_ERROR("Failed to allocate buffer.");
+ return ERROR_FAIL;
+ }
+
+ dummy = unhexify(buf, CMD_ARGV[1], tmp / 2);
+
+ if (dummy != (tmp / 2)) {
+ LOG_ERROR("Data must be encoded as hexadecimal pairs.");
+ free(buf);
+ return ERROR_COMMAND_ARGUMENT_INVALID;
+ }
+
+ length = tmp / 2;
+ ret = jaylink_emucom_write(devh, channel, buf, &length);
+
+ free(buf);
+
+ if (ret == JAYLINK_ERR_DEV_NOT_SUPPORTED) {
+ LOG_ERROR("Channel not supported by the device.");
+ return ERROR_FAIL;
+ } else if (ret != JAYLINK_OK) {
+ LOG_ERROR("Failed to write to channel: %s.", jaylink_strerror(ret));
+ return ERROR_FAIL;
+ }
+
+ if (length != (tmp / 2))
+ LOG_WARNING("Only %" PRIu32 " bytes written to the channel.", length);
+
+ return ERROR_OK;
+}
+
+COMMAND_HANDLER(jlink_handle_emucom_read_command)
+{
+ int ret;
+ uint32_t channel;
+ uint32_t length;
+ uint8_t *buf;
+ size_t tmp;
+
+ if (CMD_ARGC != 2)
+ return ERROR_COMMAND_SYNTAX_ERROR;
+
+ if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_EMUCOM)) {
+ LOG_ERROR("Device does not support EMUCOM.");
+ return ERROR_FAIL;
+ }
+
+ COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], channel);
+ COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], length);
+
+ buf = malloc(length * 3 + 1);
+
+ if (!buf) {
+ LOG_ERROR("Failed to allocate buffer.");
+ return ERROR_FAIL;
+ }
+
+ ret = jaylink_emucom_read(devh, channel, buf, &length);
+
+ if (ret == JAYLINK_ERR_DEV_NOT_SUPPORTED) {
+ LOG_ERROR("Channel is not supported by the device.");
+ free(buf);
+ return ERROR_FAIL;
+ } else if (ret == JAYLINK_ERR_DEV_NOT_AVAILABLE) {
+ LOG_ERROR("Channel is not available for the requested amount of data. "
+ "%" PRIu32 " bytes are avilable.", length);
+ free(buf);
+ return ERROR_FAIL;
+ } else if (ret != JAYLINK_OK) {
+ LOG_ERROR("Failed to read from channel: %s.", jaylink_strerror(ret));
+ free(buf);
+ return ERROR_FAIL;
+ }
+
+ tmp = hexify((char *)buf + length, buf, length, 2 * length + 1);
+
+ if (tmp != 2 * length) {
+ LOG_ERROR("Failed to convert data into hexadecimal string.");
+ free(buf);
+ return ERROR_FAIL;
+ }
+
+ command_print(CMD, "%s", buf + length);
+ free(buf);
+
+ return ERROR_OK;
+}
+
+static const struct command_registration jlink_config_subcommand_handlers[] = {
+ {
+ .name = "usb",
+ .handler = &jlink_handle_config_usb_address_command,
+ .mode = COMMAND_EXEC,
+ .help = "set the USB address",
+ .usage = "[0-3]",
+ },
+ {
+ .name = "targetpower",
+ .handler = &jlink_handle_config_target_power_command,
+ .mode = COMMAND_EXEC,
+ .help = "set the target power supply",
+ .usage = "[on|off]"
+ },
+ {
+ .name = "mac",
+ .handler = &jlink_handle_config_mac_address_command,
+ .mode = COMMAND_EXEC,
+ .help = "set the MAC Address",
+ .usage = "[ff:ff:ff:ff:ff:ff]",
+ },
+ {
+ .name = "ip",
+ .handler = &jlink_handle_config_ip_address_command,
+ .mode = COMMAND_EXEC,
+ .help = "set the IP address, where A.B.C.D is the IP address, "
+ "E the bit of the subnet mask, F.G.H.I the subnet mask",
+ .usage = "[A.B.C.D[/E] [F.G.H.I]]",
+ },
+ {
+ .name = "reset",
+ .handler = &jlink_handle_config_reset_command,
+ .mode = COMMAND_EXEC,
+ .help = "undo configuration changes",
+ .usage = "",
+ },
+ {
+ .name = "write",
+ .handler = &jlink_handle_config_write_command,
+ .mode = COMMAND_EXEC,
+ .help = "write configuration to the device",
+ .usage = "",
+ },
+ COMMAND_REGISTRATION_DONE
+};
+
+static const struct command_registration jlink_emucom_subcommand_handlers[] = {
+ {
+ .name = "write",
+ .handler = &jlink_handle_emucom_write_command,
+ .mode = COMMAND_EXEC,
+ .help = "write to a channel",
+ .usage = "<channel> <data>",
+ },
+ {
+ .name = "read",
+ .handler = &jlink_handle_emucom_read_command,
+ .mode = COMMAND_EXEC,
+ .help = "read from a channel",
+ .usage = "<channel> <length>"
+ },
+ COMMAND_REGISTRATION_DONE
+};
+
+static const struct command_registration jlink_subcommand_handlers[] = {
+ {
+ .name = "jtag",
+ .handler = &jlink_handle_jlink_jtag_command,
+ .mode = COMMAND_EXEC,
+ .help = "select the JTAG command version",
+ .usage = "[2|3]",
+ },
+ {
+ .name = "targetpower",
+ .handler = &jlink_handle_target_power_command,
+ .mode = COMMAND_EXEC,
+ .help = "set the target power supply",
+ .usage = "<on|off>"
+ },
+ {
+ .name = "freemem",
+ .handler = &jlink_handle_free_memory_command,
+ .mode = COMMAND_EXEC,
+ .help = "show free device memory",
+ .usage = "",
+ },
+ {
+ .name = "hwstatus",
+ .handler = &jlink_handle_hwstatus_command,
+ .mode = COMMAND_EXEC,
+ .help = "show the hardware status",
+ .usage = "",
+ },
+ {
+ .name = "usb",
+ .handler = &jlink_usb_command,
+ .mode = COMMAND_CONFIG,
+ .help = "set the USB address of the device that should be used",
+ .usage = "<0-3>"
+ },
+ {
+ .name = "serial",
+ .handler = &jlink_serial_command,
+ .mode = COMMAND_CONFIG,
+ .help = "set the serial number of the device that should be used",
+ .usage = "<serial number>"
+ },
+ {
+ .name = "config",
+ .handler = &jlink_handle_config_command,
+ .mode = COMMAND_EXEC,
+ .help = "access the device configuration. If no argument is given "
+ "this will show the device configuration",
+ .chain = jlink_config_subcommand_handlers,
+ .usage = "[<cmd>]",
+ },
+ {
+ .name = "emucom",
+ .mode = COMMAND_EXEC,
+ .help = "access EMUCOM channel",
+ .chain = jlink_emucom_subcommand_handlers,
+ .usage = "",
+ },
+ COMMAND_REGISTRATION_DONE
+};
+
+static const struct command_registration jlink_command_handlers[] = {
+ {
+ .name = "jlink",
+ .mode = COMMAND_ANY,
+ .help = "perform jlink management",
+ .chain = jlink_subcommand_handlers,
+ .usage = "",
+ },
+ COMMAND_REGISTRATION_DONE
+};
+
+static int jlink_swd_init(void)
+{
+ iface = JAYLINK_TIF_SWD;
+
+ return ERROR_OK;
+}
+
+static void jlink_swd_write_reg(uint8_t cmd, uint32_t value, uint32_t ap_delay_clk)
+{
+ assert(!(cmd & SWD_CMD_RnW));
+ jlink_swd_queue_cmd(cmd, NULL, value, ap_delay_clk);
+}
+
+static void jlink_swd_read_reg(uint8_t cmd, uint32_t *value, uint32_t ap_delay_clk)
+{
+ assert(cmd & SWD_CMD_RnW);
+ jlink_swd_queue_cmd(cmd, value, 0, ap_delay_clk);
+}
+
+static int_least32_t jlink_swd_frequency(int_least32_t hz)
+{
+ if (hz > 0)
+ jlink_speed(hz / 1000);
+
+ return hz;
+}
+
+/***************************************************************************/
+/* J-Link tap functions */
+
+static unsigned tap_length;
+/* In SWD mode use tms buffer for direction control */
+static uint8_t tms_buffer[JLINK_TAP_BUFFER_SIZE];
+static uint8_t tdi_buffer[JLINK_TAP_BUFFER_SIZE];
+static uint8_t tdo_buffer[JLINK_TAP_BUFFER_SIZE];
+
+struct pending_scan_result {
+ /** First bit position in tdo_buffer to read. */
+ unsigned first;
+ /** Number of bits to read. */
+ unsigned length;
+ /** Location to store the result */
+ void *buffer;
+ /** Offset in the destination buffer */
+ unsigned buffer_offset;
+};
+
+#define MAX_PENDING_SCAN_RESULTS 256
+
+static int pending_scan_results_length;
+static struct pending_scan_result pending_scan_results_buffer[MAX_PENDING_SCAN_RESULTS];
+
+static void jlink_tap_init(void)
+{
+ tap_length = 0;
+ pending_scan_results_length = 0;
+ memset(tms_buffer, 0, sizeof(tms_buffer));
+ memset(tdi_buffer, 0, sizeof(tdi_buffer));
+}
+
+static void jlink_clock_data(const uint8_t *out, unsigned out_offset,
+ const uint8_t *tms_out, unsigned tms_offset,
+ uint8_t *in, unsigned in_offset,
+ unsigned length)
+{
+ do {
+ unsigned available_length = JLINK_TAP_BUFFER_SIZE - tap_length / 8;
+
+ if (!available_length ||
+ (in && pending_scan_results_length == MAX_PENDING_SCAN_RESULTS)) {
+ if (jlink_flush() != ERROR_OK)
+ return;
+ available_length = JLINK_TAP_BUFFER_SIZE;
+ }
+
+ struct pending_scan_result *pending_scan_result =
+ &pending_scan_results_buffer[pending_scan_results_length];
+
+ unsigned scan_length = length > available_length ?
+ available_length : length;
+
+ if (out)
+ buf_set_buf(out, out_offset, tdi_buffer, tap_length, scan_length);
+ if (tms_out)
+ buf_set_buf(tms_out, tms_offset, tms_buffer, tap_length, scan_length);
+
+ if (in) {
+ pending_scan_result->first = tap_length;
+ pending_scan_result->length = scan_length;
+ pending_scan_result->buffer = in;
+ pending_scan_result->buffer_offset = in_offset;
+ pending_scan_results_length++;
+ }
+
+ tap_length += scan_length;
+ out_offset += scan_length;
+ tms_offset += scan_length;
+ in_offset += scan_length;
+ length -= scan_length;
+ } while (length > 0);
+}
+
+static int jlink_flush(void)
+{
+ int i;
+ int ret;
+
+ if (!tap_length)
+ return ERROR_OK;
+
+ jlink_last_state = jtag_debug_state_machine(tms_buffer, tdi_buffer,
+ tap_length, jlink_last_state);
+
+ ret = jaylink_jtag_io(devh, tms_buffer, tdi_buffer, tdo_buffer,
+ tap_length, jtag_command_version);
+
+ if (ret != JAYLINK_OK) {
+ LOG_ERROR("jaylink_jtag_io() failed: %s.", jaylink_strerror(ret));
+ jlink_tap_init();
+ return ERROR_JTAG_QUEUE_FAILED;
+ }
+
+ for (i = 0; i < pending_scan_results_length; i++) {
+ struct pending_scan_result *p = &pending_scan_results_buffer[i];
+
+ buf_set_buf(tdo_buffer, p->first, p->buffer,
+ p->buffer_offset, p->length);
+
+ DEBUG_JTAG_IO("Pending scan result, length = %d.", p->length);
+ }
+
+ jlink_tap_init();
+
+ return ERROR_OK;
+}
+
+static void fill_buffer(uint8_t *buf, uint32_t val, uint32_t len)
+{
+ unsigned int tap_pos = tap_length;
+
+ while (len > 32) {
+ buf_set_u32(buf, tap_pos, 32, val);
+ len -= 32;
+ tap_pos += 32;
+ }
+
+ if (len)
+ buf_set_u32(buf, tap_pos, len, val);
+}
+
+static void jlink_queue_data_out(const uint8_t *data, uint32_t len)
+{
+ const uint32_t dir_out = 0xffffffff;
+
+ if (data)
+ bit_copy(tdi_buffer, tap_length, data, 0, len);
+ else
+ fill_buffer(tdi_buffer, 0, len);
+
+ fill_buffer(tms_buffer, dir_out, len);
+ tap_length += len;
+}
+
+static void jlink_queue_data_in(uint32_t len)
+{
+ const uint32_t dir_in = 0;
+
+ fill_buffer(tms_buffer, dir_in, len);
+ tap_length += len;
+}
+
+static int jlink_swd_switch_seq(enum swd_special_seq seq)
+{
+ const uint8_t *s;
+ unsigned int s_len;
+
+ switch (seq) {
+ case LINE_RESET:
+ LOG_DEBUG("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 SWD_TO_JTAG:
+ LOG_DEBUG("SWD-to-JTAG");
+ s = swd_seq_swd_to_jtag;
+ s_len = swd_seq_swd_to_jtag_len;
+ break;
+ default:
+ LOG_ERROR("Sequence %d not supported.", seq);
+ return ERROR_FAIL;
+ }
+
+ jlink_queue_data_out(s, s_len);
+
+ return ERROR_OK;
+}
+
+static int jlink_swd_run_queue(void)
+{
+ int i;
+ int ret;
+
+ LOG_DEBUG("Executing %d queued transactions.", pending_scan_results_length);
+
+ if (queued_retval != ERROR_OK) {
+ LOG_DEBUG("Skipping due to previous errors: %d.", queued_retval);
+ goto skip;
+ }
+
+ /*
+ * A transaction must be followed by another transaction or at least 8 idle
+ * cycles to ensure that data is clocked through the AP.
+ */
+ jlink_queue_data_out(NULL, 8);
+
+ ret = jaylink_swd_io(devh, tms_buffer, tdi_buffer, tdo_buffer, tap_length);
+
+ if (ret != JAYLINK_OK) {
+ LOG_ERROR("jaylink_swd_io() failed: %s.", jaylink_strerror(ret));
+ goto skip;
+ }
+
+ for (i = 0; i < pending_scan_results_length; i++) {
+ int ack = buf_get_u32(tdo_buffer, pending_scan_results_buffer[i].first, 3);
+
+ if (ack != SWD_ACK_OK) {
+ LOG_DEBUG("SWD ack not OK: %d %s", ack,
+ ack == SWD_ACK_WAIT ? "WAIT" : ack == SWD_ACK_FAULT ? "FAULT" : "JUNK");
+ queued_retval = ack == SWD_ACK_WAIT ? ERROR_WAIT : ERROR_FAIL;
+ goto skip;
+ } else if (pending_scan_results_buffer[i].length) {
+ uint32_t data = buf_get_u32(tdo_buffer, 3 + pending_scan_results_buffer[i].first, 32);
+ int parity = buf_get_u32(tdo_buffer, 3 + 32 + pending_scan_results_buffer[i].first, 1);
+
+ if (parity != parity_u32(data)) {
+ LOG_ERROR("SWD: Read data parity mismatch.");
+ queued_retval = ERROR_FAIL;
+ goto skip;
+ }
+
+ if (pending_scan_results_buffer[i].buffer)
+ *(uint32_t *)pending_scan_results_buffer[i].buffer = data;
+ }
+ }
+
+skip:
+ jlink_tap_init();
+ ret = queued_retval;
+ queued_retval = ERROR_OK;
+
+ return ret;
+}
+
+static void jlink_swd_queue_cmd(uint8_t cmd, uint32_t *dst, uint32_t data, uint32_t ap_delay_clk)
+{
+ uint8_t data_parity_trn[DIV_ROUND_UP(32 + 1, 8)];
+ if (tap_length + 46 + 8 + ap_delay_clk >= swd_buffer_size * 8 ||
+ pending_scan_results_length == MAX_PENDING_SCAN_RESULTS) {
+ /* Not enough room in the queue. Run the queue. */
+ queued_retval = jlink_swd_run_queue();
+ }
+
+ if (queued_retval != ERROR_OK)
+ return;
+
+ cmd |= SWD_CMD_START | SWD_CMD_PARK;
+
+ jlink_queue_data_out(&cmd, 8);
+
+ pending_scan_results_buffer[pending_scan_results_length].first = tap_length;
+
+ if (cmd & SWD_CMD_RnW) {
+ /* Queue a read transaction. */
+ pending_scan_results_buffer[pending_scan_results_length].length = 32;
+ pending_scan_results_buffer[pending_scan_results_length].buffer = dst;
+
+ jlink_queue_data_in(1 + 3 + 32 + 1 + 1);
+ } else {
+ /* Queue a write transaction. */
+ pending_scan_results_buffer[pending_scan_results_length].length = 0;
+ jlink_queue_data_in(1 + 3 + 1);
+
+ buf_set_u32(data_parity_trn, 0, 32, data);
+ buf_set_u32(data_parity_trn, 32, 1, parity_u32(data));
+
+ jlink_queue_data_out(data_parity_trn, 32 + 1);
+ }
+
+ pending_scan_results_length++;
+
+ /* Insert idle cycles after AP accesses to avoid WAIT. */
+ if (cmd & SWD_CMD_APnDP)
+ jlink_queue_data_out(NULL, ap_delay_clk);
+}
+
+static const struct swd_driver jlink_swd = {
+ .init = &jlink_swd_init,
+ .frequency = &jlink_swd_frequency,
+ .switch_seq = &jlink_swd_switch_seq,
+ .read_reg = &jlink_swd_read_reg,
+ .write_reg = &jlink_swd_write_reg,
+ .run = &jlink_swd_run_queue,
+};
+
+static const char * const jlink_transports[] = { "jtag", "swd", NULL };
+
+struct jtag_interface jlink_interface = {
+ .name = "jlink",
+ .commands = jlink_command_handlers,
+ .transports = jlink_transports,
+ .swd = &jlink_swd,
+ .execute_queue = &jlink_execute_queue,
+ .speed = &jlink_speed,
+ .speed_div = &jlink_speed_div,
+ .khz = &jlink_khz,
+ .init = &jlink_init,
+ .quit = &jlink_quit,
+ .config_trace = &config_trace,
+ .poll_trace = &poll_trace,
+};
Code Review / openocd.git / blobdiff