#include "config.h"
#endif
-#include "arm7_9_common.h"
+#include "armv4_5.h"
#include "etb.h"
static int etb_get_reg(reg_t *reg);
-static int handle_etb_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-
static int etb_set_instr(etb_t *etb, uint32_t new_instr)
{
- jtag_tap_t *tap;
+ struct jtag_tap *tap;
tap = etb->tap;
if (tap == NULL)
if (buf_get_u32(tap->cur_instr, 0, tap->ir_length) != new_instr)
{
- scan_field_t field;
+ struct scan_field field;
field.tap = tap;
field.num_bits = tap->ir_length;
{
if (etb->cur_scan_chain != new_scan_chain)
{
- scan_field_t field;
+ struct scan_field field;
field.tap = etb->tap;
field.num_bits = 5;
return ERROR_OK;
}
+static int etb_read_reg_w_check(reg_t *, uint8_t *, uint8_t *);
+static int etb_set_reg_w_exec(reg_t *, uint8_t *);
+
+static int etb_read_reg(reg_t *reg)
+{
+ return etb_read_reg_w_check(reg, NULL, NULL);
+}
+
+static int etb_get_reg(reg_t *reg)
+{
+ int retval;
+
+ if ((retval = etb_read_reg(reg)) != ERROR_OK)
+ {
+ LOG_ERROR("BUG: error scheduling ETB register read");
+ return retval;
+ }
+
+ if ((retval = jtag_execute_queue()) != ERROR_OK)
+ {
+ LOG_ERROR("ETB register read failed");
+ return retval;
+ }
+
+ return ERROR_OK;
+}
+
reg_cache_t* etb_build_reg_cache(etb_t *etb)
{
reg_cache_t *reg_cache = malloc(sizeof(reg_cache_t));
return reg_cache;
}
-static int etb_get_reg(reg_t *reg)
-{
- int retval;
-
- if ((retval = etb_read_reg(reg)) != ERROR_OK)
- {
- LOG_ERROR("BUG: error scheduling etm register read");
- return retval;
- }
-
- if ((retval = jtag_execute_queue()) != ERROR_OK)
- {
- LOG_ERROR("register read failed");
- return retval;
- }
-
- return ERROR_OK;
-}
-
-
static void etb_getbuf(jtag_callback_data_t arg)
{
- uint8_t *in = (uint8_t *)arg;
+ uint8_t *in = (uint8_t *)arg;
+
*((uint32_t *)in) = buf_get_u32(in, 0, 32);
}
static int etb_read_ram(etb_t *etb, uint32_t *data, int num_frames)
{
- scan_field_t fields[3];
+ struct scan_field fields[3];
int i;
jtag_set_end_state(TAP_IDLE);
return ERROR_OK;
}
-int etb_read_reg_w_check(reg_t *reg, uint8_t* check_value, uint8_t* check_mask)
+static int etb_read_reg_w_check(reg_t *reg,
+ uint8_t* check_value, uint8_t* check_mask)
{
etb_reg_t *etb_reg = reg->arch_info;
uint8_t reg_addr = etb_reg->addr & 0x7f;
- scan_field_t fields[3];
+ struct scan_field fields[3];
LOG_DEBUG("%i", (int)(etb_reg->addr));
return ERROR_OK;
}
-int etb_read_reg(reg_t *reg)
-{
- return etb_read_reg_w_check(reg, NULL, NULL);
-}
+static int etb_write_reg(reg_t *, uint32_t);
-int etb_set_reg(reg_t *reg, uint32_t value)
+static int etb_set_reg(reg_t *reg, uint32_t value)
{
int retval;
if ((retval = etb_write_reg(reg, value)) != ERROR_OK)
{
- LOG_ERROR("BUG: error scheduling etm register write");
+ LOG_ERROR("BUG: error scheduling ETB register write");
return retval;
}
return ERROR_OK;
}
-int etb_set_reg_w_exec(reg_t *reg, uint8_t *buf)
+static int etb_set_reg_w_exec(reg_t *reg, uint8_t *buf)
{
int retval;
if ((retval = jtag_execute_queue()) != ERROR_OK)
{
- LOG_ERROR("register write failed");
+ LOG_ERROR("ETB: register write failed");
return retval;
}
return ERROR_OK;
}
-int etb_write_reg(reg_t *reg, uint32_t value)
+static int etb_write_reg(reg_t *reg, uint32_t value)
{
etb_reg_t *etb_reg = reg->arch_info;
uint8_t reg_addr = etb_reg->addr & 0x7f;
- scan_field_t fields[3];
+ struct scan_field fields[3];
LOG_DEBUG("%i: 0x%8.8" PRIx32 "", (int)(etb_reg->addr), value);
return ERROR_OK;
}
-int etb_store_reg(reg_t *reg)
-{
- return etb_write_reg(reg, buf_get_u32(reg->value, 0, reg->size));
-}
-
-static int etb_register_commands(struct command_context_s *cmd_ctx)
-{
- command_t *etb_cmd;
-
- etb_cmd = register_command(cmd_ctx, NULL, "etb", NULL, COMMAND_ANY, "Embedded Trace Buffer");
-
- register_command(cmd_ctx, etb_cmd, "config", handle_etb_config_command, COMMAND_CONFIG, NULL);
-
- return ERROR_OK;
-}
-
-static int handle_etb_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+COMMAND_HANDLER(handle_etb_config_command)
{
target_t *target;
- jtag_tap_t *tap;
- armv4_5_common_t *armv4_5;
- arm7_9_common_t *arm7_9;
+ struct jtag_tap *tap;
+ struct arm *arm;
if (argc != 2)
{
if (!target)
{
- LOG_ERROR("target '%s' not defined", args[0]);
+ LOG_ERROR("ETB: target '%s' not defined", args[0]);
return ERROR_FAIL;
}
- if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
+ arm = target_to_arm(target);
+ if (!is_arm(arm))
{
- command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
+ command_print(cmd_ctx, "ETB: '%s' isn't an ARM", args[0]);
return ERROR_FAIL;
}
tap = jtag_tap_by_string(args[1]);
if (tap == NULL)
{
- command_print(cmd_ctx, "Tap: %s does not exist", args[1]);
+ command_print(cmd_ctx, "ETB: TAP %s does not exist", args[1]);
return ERROR_FAIL;
}
- if (arm7_9->etm_ctx)
+ if (arm->etm)
{
etb_t *etb = malloc(sizeof(etb_t));
- arm7_9->etm_ctx->capture_driver_priv = etb;
+ arm->etm->capture_driver_priv = etb;
etb->tap = tap;
etb->cur_scan_chain = 0xffffffff;
}
else
{
- LOG_ERROR("target has no ETM defined, ETB left unconfigured");
+ LOG_ERROR("ETM: target has no ETM defined, ETB left unconfigured");
return ERROR_FAIL;
}
return ERROR_OK;
}
+static int etb_register_commands(struct command_context_s *cmd_ctx)
+{
+ command_t *etb_cmd = register_command(cmd_ctx, NULL, "etb",
+ NULL, COMMAND_ANY, "Embedded Trace Buffer");
+
+ register_command(cmd_ctx, etb_cmd, "config",
+ handle_etb_config_command, COMMAND_CONFIG,
+ NULL);
+
+ return ERROR_OK;
+}
+
static int etb_init(etm_context_t *etm_ctx)
{
etb_t *etb = etm_ctx->capture_driver_priv;
static trace_status_t etb_status(etm_context_t *etm_ctx)
{
etb_t *etb = etm_ctx->capture_driver_priv;
+ reg_t *control = &etb->reg_cache->reg_list[ETB_CTRL];
+ reg_t *status = &etb->reg_cache->reg_list[ETB_STATUS];
+ trace_status_t retval = 0;
+ int etb_timeout = 100;
etb->etm_ctx = etm_ctx;
- /* 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)
- {
- reg_t *etb_status_reg = &etb->reg_cache->reg_list[ETB_STATUS];
- int etb_timeout = 100;
+ /* read control and status registers */
+ etb_read_reg(control);
+ etb_read_reg(status);
+ jtag_execute_queue();
- /* trace is running, check the ETB status flags */
- etb_get_reg(etb_status_reg);
+ /* See if it's (still) active */
+ retval = buf_get_u32(control->value, 0, 1) ? TRACE_RUNNING : TRACE_IDLE;
- /* check Full bit to identify an overflow */
- if (buf_get_u32(etb_status_reg->value, 0, 1) == 1)
- etm_ctx->capture_status |= TRACE_OVERFLOWED;
+ /* check Full bit to identify wraparound/overflow */
+ if (buf_get_u32(status->value, 0, 1) == 1)
+ retval |= TRACE_OVERFLOWED;
- /* check Triggered bit to identify trigger condition */
- if (buf_get_u32(etb_status_reg->value, 1, 1) == 1)
- etm_ctx->capture_status |= TRACE_TRIGGERED;
+ /* check Triggered bit to identify trigger condition */
+ if (buf_get_u32(status->value, 1, 1) == 1)
+ retval |= TRACE_TRIGGERED;
- /* check AcqComp to identify trace completion */
- if (buf_get_u32(etb_status_reg->value, 2, 1) == 1)
- {
- while (etb_timeout-- && (buf_get_u32(etb_status_reg->value, 3, 1) == 0))
- {
- /* wait for data formatter idle */
- etb_get_reg(etb_status_reg);
- }
+ /* check AcqComp to see if trigger counter dropped to zero */
+ if (buf_get_u32(status->value, 2, 1) == 1) {
+ /* wait for DFEmpty */
+ while (etb_timeout-- && buf_get_u32(status->value, 3, 1) == 0)
+ etb_get_reg(status);
- if (etb_timeout == 0)
- {
- LOG_ERROR("AcqComp set but DFEmpty won't go high, ETB status: 0x%" PRIx32 "",
- buf_get_u32(etb_status_reg->value, 0, etb_status_reg->size));
- }
+ if (etb_timeout == 0)
+ LOG_ERROR("ETB: DFEmpty won't go high, status 0x%02x",
+ (unsigned) buf_get_u32(status->value, 0, 4));
- if (!(etm_ctx->capture_status && TRACE_TRIGGERED))
- {
- LOG_ERROR("trace completed, but no trigger condition detected");
- }
+ if (!(etm_ctx->capture_status & TRACE_TRIGGERED))
+ LOG_WARNING("ETB: trace complete without triggering?");
- etm_ctx->capture_status &= ~TRACE_RUNNING;
- etm_ctx->capture_status |= TRACE_COMPLETED;
- }
+ retval |= TRACE_COMPLETED;
}
- return etm_ctx->capture_status;
+ /* NOTE: using a trigger is optional; and at least ETB11 has a mode
+ * where it can ignore the trigger counter.
+ */
+
+ /* update recorded state */
+ etm_ctx->capture_status = retval;
+
+ return retval;
}
static int etb_read_trace(etm_context_t *etm_ctx)
etb_ctrl_value |= 0x2;
}
- if ((etm_ctx->portmode & ETM_PORT_MODE_MASK) == ETM_PORT_MUXED)
+ if ((etm_ctx->portmode & ETM_PORT_MODE_MASK) == ETM_PORT_MUXED) {
+ LOG_ERROR("ETB: can't run in multiplexed mode");
return ERROR_ETM_PORTMODE_NOT_SUPPORTED;
+ }
trigger_count = (etb->ram_depth * etm_ctx->trigger_percent) / 100;
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