* 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 "armv4_5.h"
+#include "arm.h"
+#include "etm.h"
#include "oocd_trace.h"
/*
* https://lists.berlios.de/pipermail/openocd-development/2007-September/000336.html
*/
-
-static int oocd_trace_register_commands(struct command_context_s *cmd_ctx);
-
-static int oocd_trace_read_reg(oocd_trace_t *oocd_trace, int reg, uint32_t *value)
+static int oocd_trace_read_reg(struct oocd_trace *oocd_trace, int reg, uint32_t *value)
{
size_t bytes_written, bytes_read, bytes_to_read;
uint8_t cmd;
cmd = 0x10 | (reg & 0x7);
bytes_written = write(oocd_trace->tty_fd, &cmd, 1);
+ if (bytes_written < 1)
+ return ERROR_FAIL;
bytes_to_read = 4;
- while (bytes_to_read > 0)
- {
- bytes_read = read(oocd_trace->tty_fd, ((uint8_t*)value) + 4 - bytes_to_read, bytes_to_read);
+ while (bytes_to_read > 0) {
+ bytes_read = read(oocd_trace->tty_fd, ((uint8_t *)value) + 4 - bytes_to_read, bytes_to_read);
bytes_to_read -= bytes_read;
}
- LOG_DEBUG("reg #%i: 0x%8.8x\n", reg, *value);
+ LOG_DEBUG("reg #%i: 0x%8.8x", reg, *value);
return ERROR_OK;
}
-static int oocd_trace_write_reg(oocd_trace_t *oocd_trace, int reg, uint32_t value)
+static int oocd_trace_write_reg(struct oocd_trace *oocd_trace, int reg, uint32_t value)
{
size_t bytes_written;
uint8_t data[5];
data[4] = (value & 0xff000000) >> 24;
bytes_written = write(oocd_trace->tty_fd, data, 5);
- LOG_DEBUG("reg #%i: 0x%8.8x\n", reg, value);
+ if (bytes_written < 5)
+ return ERROR_FAIL;
+
+ LOG_DEBUG("reg #%i: 0x%8.8x", reg, value);
return ERROR_OK;
}
-static int oocd_trace_read_memory(oocd_trace_t *oocd_trace, uint8_t *data, uint32_t address, uint32_t size)
+static int oocd_trace_read_memory(struct oocd_trace *oocd_trace, uint8_t *data, uint32_t address, uint32_t size)
{
size_t bytes_written, bytes_to_read;
ssize_t bytes_read;
cmd = 0x20;
bytes_written = write(oocd_trace->tty_fd, &cmd, 1);
+ if (bytes_written < 1)
+ return ERROR_FAIL;
bytes_to_read = size * 16;
- while (bytes_to_read > 0)
- {
- if ((bytes_read = read(oocd_trace->tty_fd,
- ((uint8_t*)data) + (size * 16) - bytes_to_read, bytes_to_read)) < 0)
- {
+ while (bytes_to_read > 0) {
+ bytes_read = read(oocd_trace->tty_fd,
+ ((uint8_t *)data) + (size * 16) - bytes_to_read, bytes_to_read);
+ if (bytes_read < 0)
LOG_DEBUG("read() returned %zi (%s)", bytes_read, strerror(errno));
- }
else
bytes_to_read -= bytes_read;
}
return ERROR_OK;
}
-static int oocd_trace_init(etm_context_t *etm_ctx)
+static int oocd_trace_init(struct etm_context *etm_ctx)
{
uint8_t trash[256];
- oocd_trace_t *oocd_trace = etm_ctx->capture_driver_priv;
+ struct oocd_trace *oocd_trace = etm_ctx->capture_driver_priv;
size_t bytes_read;
oocd_trace->tty_fd = open(oocd_trace->tty, O_RDWR | O_NOCTTY | O_NONBLOCK);
- if (oocd_trace->tty_fd < 0)
- {
+ if (oocd_trace->tty_fd < 0) {
LOG_ERROR("can't open tty");
return ERROR_ETM_CAPTURE_INIT_FAILED;
}
/* occasionally one bogus character is left in the input buffer
* read up any leftover characters to ensure communication is in sync */
- while ((bytes_read = read(oocd_trace->tty_fd, trash, sizeof(trash))) > 0)
- {
- LOG_DEBUG("%zi bytes read\n", bytes_read);
- };
+ do {
+ bytes_read = read(oocd_trace->tty_fd, trash, sizeof(trash));
+ if (bytes_read)
+ LOG_DEBUG("%zi bytes read", bytes_read);
+ } while (bytes_read > 0);
return ERROR_OK;
}
-static trace_status_t oocd_trace_status(etm_context_t *etm_ctx)
+static trace_status_t oocd_trace_status(struct etm_context *etm_ctx)
{
- oocd_trace_t *oocd_trace = etm_ctx->capture_driver_priv;
+ struct oocd_trace *oocd_trace = etm_ctx->capture_driver_priv;
uint32_t status;
oocd_trace_read_reg(oocd_trace, OOCD_TRACE_STATUS, &status);
/* if tracing is currently idle, return this information */
if (etm_ctx->capture_status == TRACE_IDLE)
- {
return etm_ctx->capture_status;
- }
- else if (etm_ctx->capture_status & TRACE_RUNNING)
- {
+ else if (etm_ctx->capture_status & TRACE_RUNNING) {
/* check Full bit to identify an overflow */
if (status & 0x4)
etm_ctx->capture_status |= TRACE_OVERFLOWED;
if (status & 0x2)
etm_ctx->capture_status |= TRACE_TRIGGERED;
- if (status & 0x1)
- {
+ if (status & 0x1) {
etm_ctx->capture_status &= ~TRACE_RUNNING;
etm_ctx->capture_status |= TRACE_COMPLETED;
}
return etm_ctx->capture_status;
}
-static int oocd_trace_read_trace(etm_context_t *etm_ctx)
+static int oocd_trace_read_trace(struct etm_context *etm_ctx)
{
- oocd_trace_t *oocd_trace = etm_ctx->capture_driver_priv;
+ struct oocd_trace *oocd_trace = etm_ctx->capture_driver_priv;
uint32_t status, address;
uint32_t first_frame = 0x0;
uint32_t num_frames = 1048576;
oocd_trace_read_memory(oocd_trace, trace_data, first_frame, num_frames);
if (etm_ctx->trace_depth > 0)
- {
free(etm_ctx->trace_data);
- }
etm_ctx->trace_depth = num_frames * 16;
- etm_ctx->trace_data = malloc(sizeof(etmv1_trace_data_t) * etm_ctx->trace_depth);
+ etm_ctx->trace_data = malloc(sizeof(struct etmv1_trace_data) * etm_ctx->trace_depth);
- for (i = 0; i < num_frames * 16; i++)
- {
+ for (i = 0; i < num_frames * 16; i++) {
etm_ctx->trace_data[i].pipestat = (trace_data[i] & 0x7);
etm_ctx->trace_data[i].packet = (trace_data[i] & 0x78) >> 3;
etm_ctx->trace_data[i].flags = 0;
if ((trace_data[i] & 0x80) >> 7)
- {
etm_ctx->trace_data[i].flags |= ETMV1_TRACESYNC_CYCLE;
- }
- if (etm_ctx->trace_data[i].pipestat == STAT_TR)
- {
+ if (etm_ctx->trace_data[i].pipestat == STAT_TR) {
etm_ctx->trace_data[i].pipestat = etm_ctx->trace_data[i].packet & 0x7;
etm_ctx->trace_data[i].flags |= ETMV1_TRIGGER_CYCLE;
}
return ERROR_OK;
}
-static int oocd_trace_start_capture(etm_context_t *etm_ctx)
+static int oocd_trace_start_capture(struct etm_context *etm_ctx)
{
- oocd_trace_t *oocd_trace = etm_ctx->capture_driver_priv;
+ struct oocd_trace *oocd_trace = etm_ctx->capture_driver_priv;
uint32_t control = 0x1; /* 0x1: enabled */
uint32_t trigger_count;
- if (((etm_ctx->portmode & ETM_PORT_MODE_MASK) != ETM_PORT_NORMAL)
- || ((etm_ctx->portmode & ETM_PORT_WIDTH_MASK) != ETM_PORT_4BIT))
- {
+ if (((etm_ctx->control & ETM_PORT_MODE_MASK) != ETM_PORT_NORMAL)
+ || ((etm_ctx->control & ETM_PORT_WIDTH_MASK) != ETM_PORT_4BIT)) {
LOG_DEBUG("OpenOCD + trace only supports normal 4-bit ETM mode");
return ERROR_ETM_PORTMODE_NOT_SUPPORTED;
}
- if ((etm_ctx->portmode & ETM_PORT_CLOCK_MASK) == ETM_PORT_HALF_CLOCK)
- {
+ if ((etm_ctx->control & ETM_PORT_CLOCK_MASK) == ETM_PORT_HALF_CLOCK)
control |= 0x2; /* half rate clock, capture at twice the clock rate */
- }
/* OpenOCD + trace holds up to 16 million samples,
* but trigger counts is set in multiples of 16 */
- trigger_count = (1048576 * etm_ctx->trigger_percent) / 100;
+ trigger_count = (1048576 * /* trigger_percent */ 50) / 100;
/* capturing always starts at address zero */
oocd_trace_write_reg(oocd_trace, OOCD_TRACE_ADDRESS, 0x0);
return ERROR_OK;
}
-static int oocd_trace_stop_capture(etm_context_t *etm_ctx)
+static int oocd_trace_stop_capture(struct etm_context *etm_ctx)
{
- oocd_trace_t *oocd_trace = etm_ctx->capture_driver_priv;
+ struct oocd_trace *oocd_trace = etm_ctx->capture_driver_priv;
/* trace stopped, just clear running flag, but preserve others */
etm_ctx->capture_status &= ~TRACE_RUNNING;
return ERROR_OK;
}
-etm_capture_driver_t oocd_trace_capture_driver =
-{
- .name = "oocd_trace",
- .register_commands = oocd_trace_register_commands,
- .init = oocd_trace_init,
- .status = oocd_trace_status,
- .start_capture = oocd_trace_start_capture,
- .stop_capture = oocd_trace_stop_capture,
- .read_trace = oocd_trace_read_trace,
-};
-
COMMAND_HANDLER(handle_oocd_trace_config_command)
{
- target_t *target;
+ struct target *target;
struct arm *arm;
- if (argc != 2)
- {
- LOG_ERROR("incomplete 'oocd_trace config <target> <tty>' command");
- return ERROR_FAIL;
- }
+ if (CMD_ARGC != 2)
+ return ERROR_COMMAND_SYNTAX_ERROR;
- target = get_current_target(cmd_ctx);
+ target = get_current_target(CMD_CTX);
arm = target_to_arm(target);
- if (!is_arm(arm))
- {
- command_print(cmd_ctx, "current target isn't an ARM");
+ if (!is_arm(arm)) {
+ command_print(CMD_CTX, "current target isn't an ARM");
return ERROR_FAIL;
}
- if (arm->etm)
- {
- oocd_trace_t *oocd_trace = malloc(sizeof(oocd_trace_t));
+ if (arm->etm) {
+ struct oocd_trace *oocd_trace = malloc(sizeof(struct oocd_trace));
arm->etm->capture_driver_priv = oocd_trace;
oocd_trace->etm_ctx = arm->etm;
/* copy name of TTY device used to communicate with OpenOCD + trace */
- oocd_trace->tty = strndup(args[1], 256);
- }
- else
- {
+ oocd_trace->tty = strndup(CMD_ARGV[1], 256);
+ } else
LOG_ERROR("target has no ETM defined, OpenOCD + trace left unconfigured");
- }
return ERROR_OK;
}
COMMAND_HANDLER(handle_oocd_trace_status_command)
{
- target_t *target;
+ struct target *target;
struct arm *arm;
- oocd_trace_t *oocd_trace;
+ struct oocd_trace *oocd_trace;
uint32_t status;
- target = get_current_target(cmd_ctx);
+ target = get_current_target(CMD_CTX);
arm = target_to_arm(target);
- if (!is_arm(arm))
- {
- command_print(cmd_ctx, "current target isn't an ARM");
+ if (!is_arm(arm)) {
+ command_print(CMD_CTX, "current target isn't an ARM");
return ERROR_FAIL;
}
- if (!arm->etm)
- {
- command_print(cmd_ctx, "current target doesn't have an ETM configured");
+ if (!arm->etm) {
+ command_print(CMD_CTX, "current target doesn't have an ETM configured");
return ERROR_FAIL;
}
- if (strcmp(arm->etm->capture_driver->name, "oocd_trace") != 0)
- {
- command_print(cmd_ctx, "current target's ETM capture driver isn't 'oocd_trace'");
+ if (strcmp(arm->etm->capture_driver->name, "oocd_trace") != 0) {
+ command_print(CMD_CTX, "current target's ETM capture driver isn't 'oocd_trace'");
return ERROR_FAIL;
}
- oocd_trace = (oocd_trace_t*)arm->etm->capture_driver_priv;
+ oocd_trace = (struct oocd_trace *)arm->etm->capture_driver_priv;
oocd_trace_read_reg(oocd_trace, OOCD_TRACE_STATUS, &status);
if (status & 0x8)
- command_print(cmd_ctx, "trace clock locked");
+ command_print(CMD_CTX, "trace clock locked");
else
- command_print(cmd_ctx, "no trace clock");
+ command_print(CMD_CTX, "no trace clock");
return ERROR_OK;
}
COMMAND_HANDLER(handle_oocd_trace_resync_command)
{
- target_t *target;
+ struct target *target;
struct arm *arm;
- oocd_trace_t *oocd_trace;
+ struct oocd_trace *oocd_trace;
size_t bytes_written;
uint8_t cmd_array[1];
- target = get_current_target(cmd_ctx);
+ target = get_current_target(CMD_CTX);
arm = target_to_arm(target);
- if (!is_arm(arm))
- {
- command_print(cmd_ctx, "current target isn't an ARM");
+ if (!is_arm(arm)) {
+ command_print(CMD_CTX, "current target isn't an ARM");
return ERROR_FAIL;
}
- if (!arm->etm)
- {
- command_print(cmd_ctx, "current target doesn't have an ETM configured");
+ if (!arm->etm) {
+ command_print(CMD_CTX, "current target doesn't have an ETM configured");
return ERROR_FAIL;
}
- if (strcmp(arm->etm->capture_driver->name, "oocd_trace") != 0)
- {
- command_print(cmd_ctx, "current target's ETM capture driver isn't 'oocd_trace'");
+ if (strcmp(arm->etm->capture_driver->name, "oocd_trace") != 0) {
+ command_print(CMD_CTX, "current target's ETM capture driver isn't 'oocd_trace'");
return ERROR_FAIL;
}
- oocd_trace = (oocd_trace_t*)arm->etm->capture_driver_priv;
+ oocd_trace = (struct oocd_trace *)arm->etm->capture_driver_priv;
cmd_array[0] = 0xf0;
bytes_written = write(oocd_trace->tty_fd, cmd_array, 1);
+ if (bytes_written < 1)
+ return ERROR_FAIL;
- command_print(cmd_ctx, "requesting traceclock resync");
+ command_print(CMD_CTX, "requesting traceclock resync");
LOG_DEBUG("resyncing traceclk pll");
return ERROR_OK;
}
-int oocd_trace_register_commands(struct command_context_s *cmd_ctx)
-{
- command_t *oocd_trace_cmd;
-
- oocd_trace_cmd = register_command(cmd_ctx, NULL, "oocd_trace", NULL, COMMAND_ANY, "OpenOCD + trace");
-
- register_command(cmd_ctx, oocd_trace_cmd, "config", handle_oocd_trace_config_command, COMMAND_CONFIG, NULL);
-
- register_command(cmd_ctx, oocd_trace_cmd, "status", handle_oocd_trace_status_command, COMMAND_EXEC, "display OpenOCD + trace status");
- register_command(cmd_ctx, oocd_trace_cmd, "resync", handle_oocd_trace_resync_command, COMMAND_EXEC, "resync OpenOCD + trace capture clock");
+static const struct command_registration oocd_trace_all_command_handlers[] = {
+ {
+ .name = "config",
+ .handler = handle_oocd_trace_config_command,
+ .mode = COMMAND_CONFIG,
+ .usage = "<target> <tty>",
+ },
+ {
+ .name = "status",
+ .handler = handle_oocd_trace_status_command,
+ .mode = COMMAND_EXEC,
+ .usage = "",
+ .help = "display OpenOCD + trace status",
+ },
+ {
+ .name = "resync",
+ .handler = handle_oocd_trace_resync_command,
+ .mode = COMMAND_EXEC,
+ .usage = "",
+ .help = "resync OpenOCD + trace capture clock",
+ },
+ COMMAND_REGISTRATION_DONE
+};
+static const struct command_registration oocd_trace_command_handlers[] = {
+ {
+ .name = "oocd_trace",
+ .mode = COMMAND_ANY,
+ .help = "OpenOCD trace capture driver command group",
+ .usage = "",
+ .chain = oocd_trace_all_command_handlers,
+ },
+ COMMAND_REGISTRATION_DONE
+};
- return ERROR_OK;
-}
+struct etm_capture_driver oocd_trace_capture_driver = {
+ .name = "oocd_trace",
+ .commands = oocd_trace_command_handlers,
+ .init = oocd_trace_init,
+ .status = oocd_trace_status,
+ .start_capture = oocd_trace_start_capture,
+ .stop_capture = oocd_trace_stop_capture,
+ .read_trace = oocd_trace_read_trace,
+};
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