#include <jtag/interface.h>
#include <jtag/swd.h>
#include <jtag/commands.h>
+#include <jtag/drivers/jtag_usb_common.h>
+#include <target/cortex_m.h>
#include <libjaylink/libjaylink.h>
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 unsigned int swd_buffer_size = JLINK_TAP_BUFFER_SIZE;
+/* Maximum SWO frequency deviation. */
+#define SWO_MAX_FREQ_DEV 0.03
+
/* 256 byte non-volatile memory */
struct device_config {
uint8_t usb_address;
static void jlink_stableclocks(int num_cycles);
static void jlink_runtest(int num_cycles);
static void jlink_reset(int trst, int srst);
+static int jlink_reset_safe(int trst, int srst);
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);
static void jlink_execute_stableclocks(struct jtag_command *cmd)
{
- DEBUG_JTAG_IO("stableclocks %i cycles", cmd->cmd.runtest->num_cycles);
+ LOG_DEBUG_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,
+ LOG_DEBUG_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);
static void jlink_execute_statemove(struct jtag_command *cmd)
{
- DEBUG_JTAG_IO("statemove end in %i", cmd->cmd.statemove->end_state);
+ LOG_DEBUG_IO("statemove end in %i", cmd->cmd.statemove->end_state);
jlink_end_state(cmd->cmd.statemove->end_state);
jlink_state_move();
static void jlink_execute_pathmove(struct jtag_command *cmd)
{
- DEBUG_JTAG_IO("pathmove: %i states, end in %i",
+ LOG_DEBUG_IO("pathmove: %i states, end in %i",
cmd->cmd.pathmove->num_states,
cmd->cmd.pathmove->path[cmd->cmd.pathmove->num_states - 1]);
static void jlink_execute_scan(struct jtag_command *cmd)
{
- DEBUG_JTAG_IO("%s type:%d", cmd->cmd.scan->ir_scan ? "IRSCAN" : "DRSCAN",
+ LOG_DEBUG_IO("%s type:%d", cmd->cmd.scan->ir_scan ? "IRSCAN" : "DRSCAN",
jtag_scan_type(cmd->cmd.scan));
/* Make sure there are no trailing fields with num_bits == 0, or the logic below will fail. */
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",
+ LOG_DEBUG_IO("%s%s field %d/%d %d bits",
field->in_value ? "in" : "",
field->out_value ? "out" : "",
i,
jlink_state_move();
}
- DEBUG_JTAG_IO("%s scan, %i bits, end in %s",
+ LOG_DEBUG_IO("%s scan, %i bits, end in %s",
(cmd->cmd.scan->ir_scan) ? "IR" : "DR", scan_size,
tap_state_name(tap_get_end_state()));
}
-static void jlink_execute_reset(struct jtag_command *cmd)
-{
- DEBUG_JTAG_IO("reset trst: %i srst %i", cmd->cmd.reset->trst,
- cmd->cmd.reset->srst);
-
- jlink_flush();
- jlink_reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst);
- jlink_flush();
-}
-
static void jlink_execute_sleep(struct jtag_command *cmd)
{
- DEBUG_JTAG_IO("sleep %" PRIi32 "", cmd->cmd.sleep->us);
+ LOG_DEBUG_IO("sleep %" PRIu32 "", cmd->cmd.sleep->us);
jlink_flush();
jtag_sleep(cmd->cmd.sleep->us);
}
case JTAG_SCAN:
jlink_execute_scan(cmd);
break;
- case JTAG_RESET:
- jlink_execute_reset(cmd);
- break;
case JTAG_SLEEP:
jlink_execute_sleep(cmd);
break;
}
if (tmp < 143) {
- LOG_ERROR("Not enough free device internal memory: %u bytes.", tmp);
+ LOG_ERROR("Not enough free device internal memory: %" PRIu32 " bytes.", tmp);
return false;
}
return 0;
}
+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;
+ }
+
+ equal = jtag_usb_location_equal(bus, ports, num_ports);
+ free(ports);
+
+ return equal;
+}
+
+
static int jlink_init(void)
{
int ret;
return ERROR_JTAG_INIT_FAILED;
}
- if (!use_serial_number && !use_usb_address && num_devices > 1) {
+ use_usb_location = (jtag_usb_get_location() != NULL);
+
+ 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);
found_device = false;
for (i = 0; devs[i]; i++) {
+ struct jaylink_device *dev = devs[i];
+
if (use_serial_number) {
- ret = jaylink_device_get_serial_number(devs[i], &tmp);
+ ret = jaylink_device_get_serial_number(dev, &tmp);
if (ret == JAYLINK_ERR_NOT_AVAILABLE) {
continue;
}
if (use_usb_address) {
- ret = jaylink_device_get_usb_address(devs[i], &address);
+ ret = jaylink_device_get_usb_address(dev, &address);
if (ret == JAYLINK_ERR_NOT_SUPPORTED) {
continue;
continue;
}
- ret = jaylink_open(devs[i], &devh);
+ if (use_usb_location && !jlink_usb_location_equal(dev))
+ continue;
+
+ ret = jaylink_open(dev, &devh);
if (ret == JAYLINK_OK) {
found_device = true;
jaylink_jtag_set_trst(devh);
}
+static int jlink_reset_safe(int trst, int srst)
+{
+ jlink_flush();
+ jlink_reset(trst, srst);
+ return jlink_flush();
+}
+
COMMAND_HANDLER(jlink_usb_command)
{
int tmp;
return ERROR_FAIL;
}
- command_print(CMD, "Device has %u bytes of free memory.", tmp);
+ command_print(CMD, "Device has %" PRIu32 " bytes of free memory.", tmp);
return ERROR_OK;
}
return tmp & 0xffffff00;
}
-static bool check_trace_freq(struct jaylink_swo_speed speed,
- uint32_t trace_freq)
+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;
+}
+
+static bool detect_swo_freq_and_prescaler(struct jaylink_swo_speed speed,
+ unsigned int traceclkin_freq, unsigned int *trace_freq,
+ uint16_t *prescaler)
{
- double min;
- double deviation;
uint32_t divider;
+ unsigned int presc;
+ double deviation;
- min = fabs(1.0 - (speed.freq / ((double)trace_freq * speed.min_div)));
+ for (divider = speed.min_div; divider <= speed.max_div; divider++) {
+ *trace_freq = speed.freq / divider;
+ presc = ((1.0 - SWO_MAX_FREQ_DEV) * traceclkin_freq) / *trace_freq + 1;
- for (divider = speed.min_div; divider < speed.max_div; divider++) {
- deviation = fabs(1.0 - (speed.freq / ((double)trace_freq * divider)));
+ if (presc > TPIU_ACPR_MAX_SWOSCALER + 1)
+ break;
- if (deviation < 0.03) {
- LOG_DEBUG("Found suitable frequency divider %u with deviation of "
- "%.02f %%.", divider, deviation);
+ deviation = fabs(1.0 - ((double)*trace_freq * presc / traceclkin_freq));
+
+ if (deviation <= SWO_MAX_FREQ_DEV) {
+ *prescaler = presc;
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;
}
static int config_trace(bool enabled, enum tpiu_pin_protocol pin_protocol,
- uint32_t port_size, unsigned int *trace_freq)
+ uint32_t port_size, unsigned int *trace_freq,
+ unsigned int traceclkin_freq, uint16_t *prescaler)
{
int ret;
uint32_t buffer_size;
struct jaylink_swo_speed speed;
+ uint32_t divider;
+ uint32_t min_freq;
+ uint32_t max_freq;
+
+ trace_enabled = enabled;
if (!jaylink_has_cap(caps, JAYLINK_DEV_CAP_SWO)) {
- LOG_ERROR("Trace capturing is not supported by the device.");
- return ERROR_FAIL;
- }
+ if (!enabled)
+ return ERROR_OK;
- if (pin_protocol != TPIU_PIN_PROTOCOL_ASYNC_UART) {
- LOG_ERROR("Selected pin protocol is not supported.");
+ LOG_ERROR("Trace capturing is not supported by the device.");
return ERROR_FAIL;
}
- trace_enabled = enabled;
-
ret = jaylink_swo_stop(devh);
if (ret != JAYLINK_OK) {
return ERROR_OK;
}
+ if (pin_protocol != TPIU_PIN_PROTOCOL_ASYNC_UART) {
+ LOG_ERROR("Selected pin protocol is not supported.");
+ return ERROR_FAIL;
+ }
+
buffer_size = calculate_trace_buffer_size();
if (!buffer_size) {
return ERROR_FAIL;
}
- if (!*trace_freq)
- *trace_freq = speed.freq / speed.min_div;
+ if (*trace_freq > 0) {
+ divider = speed.freq / *trace_freq;
+ min_freq = speed.freq / speed.max_div;
+ max_freq = speed.freq / speed.min_div;
+
+ if (*trace_freq > max_freq) {
+ LOG_INFO("Given SWO frequency too high, using %" PRIu32 " Hz instead.",
+ max_freq);
+ *trace_freq = max_freq;
+ } else if (*trace_freq < min_freq) {
+ LOG_INFO("Given SWO frequency too low, using %" PRIu32 " Hz instead.",
+ min_freq);
+ *trace_freq = min_freq;
+ } else if (*trace_freq != speed.freq / divider) {
+ *trace_freq = speed.freq / divider;
+
+ LOG_INFO("Given SWO frequency is not supported by the device, "
+ "using %u Hz instead.", *trace_freq);
+ }
- if (!check_trace_freq(speed, *trace_freq))
- return ERROR_FAIL;
+ if (!calculate_swo_prescaler(traceclkin_freq, *trace_freq,
+ prescaler)) {
+ LOG_ERROR("SWO frequency is not suitable. Please choose a "
+ "different frequency or use auto-detection.");
+ return ERROR_FAIL;
+ }
+ } else {
+ LOG_INFO("Trying to auto-detect SWO frequency.");
- LOG_DEBUG("Using %u bytes device memory for trace capturing.", buffer_size);
+ if (!detect_swo_freq_and_prescaler(speed, traceclkin_freq, trace_freq,
+ prescaler)) {
+ LOG_ERROR("Maximum permitted frequency deviation of %.02f %% "
+ "could not be achieved.", SWO_MAX_FREQ_DEV);
+ LOG_ERROR("Auto-detection of SWO frequency failed.");
+ return ERROR_FAIL;
+ }
+
+ LOG_INFO("Using SWO frequency of %u Hz.", *trace_freq);
+ }
ret = jaylink_swo_start(devh, JAYLINK_SWO_MODE_UART, *trace_freq,
buffer_size);
return ERROR_FAIL;
}
+ LOG_DEBUG("Using %" PRIu32 " bytes device memory for trace capturing.",
+ buffer_size);
+
/*
* Adjust the SWD transaction buffer size as starting SWO capturing
* allocates device internal memory.
} else if (CMD_ARGC == 1) {
str = CMD_ARGV[0];
- if ((strlen(str) != 17) || (str[2] != ':' || str[5] != ':' || \
+ 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;
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);
+ "%" PRIu32 " bytes are available.", length);
free(buf);
return ERROR_FAIL;
} else if (ret != JAYLINK_OK) {
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 */
buf_set_buf(tdo_buffer, p->first, p->buffer,
p->buffer_offset, p->length);
- DEBUG_JTAG_IO("Pending scan result, length = %d.", p->length);
+ LOG_DEBUG_IO("Pending scan result, length = %d.", p->length);
}
jlink_tap_init();
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,
static const char * const jlink_transports[] = { "jtag", "swd", NULL };
-struct jtag_interface jlink_interface = {
+static struct jtag_interface jlink_interface = {
+ .execute_queue = &jlink_execute_queue,
+};
+
+struct adapter_driver jlink_adapter_driver = {
.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,
+ .commands = jlink_command_handlers,
+
.init = &jlink_init,
.quit = &jlink_quit,
+ .reset = &jlink_reset_safe,
+ .speed = &jlink_speed,
+ .khz = &jlink_khz,
+ .speed_div = &jlink_speed_div,
.config_trace = &config_trace,
.poll_trace = &poll_trace,
+
+ .jtag_ops = &jlink_interface,
+ .swd_ops = &jlink_swd,
};
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