#include "config.h"
#endif
-#include "arm7_9_common.h"
+#include "arm.h"
+#include "etm.h"
#include "etb.h"
-
-#include "log.h"
-#include "types.h"
-#include "binarybuffer.h"
-#include "target.h"
#include "register.h"
-#include "jtag.h"
-#include <stdlib.h>
-char* etb_reg_list[] =
+static char* etb_reg_list[] =
{
"ETB_identification",
"ETB_ram_depth",
"ETB_control",
};
-int etb_reg_arch_type = -1;
-
-int etb_get_reg(reg_t *reg);
-int etb_set_reg(reg_t *reg, u32 value);
-int etb_set_reg_w_exec(reg_t *reg, u8 *buf);
-
-int etb_write_reg(reg_t *reg, u32 value);
-int etb_read_reg(reg_t *reg);
-
-int handle_arm7_9_etb_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
-int handle_arm7_9_etb_dump_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
+static int etb_get_reg(struct reg *reg);
-char *etmv1_branch_reason_string[] =
+static int etb_set_instr(struct etb *etb, uint32_t new_instr)
{
- "normal pc change", "tracing enabled", "restart after FIFO overflow",
- "exit from debug state", "peridoic synchronization point",
- "reserved", "reserved", "reserved"
-};
+ struct jtag_tap *tap;
+ tap = etb->tap;
+ if (tap == NULL)
+ return ERROR_FAIL;
-int etb_set_instr(etb_t *etb, u32 new_instr)
-{
- jtag_device_t *device = jtag_get_device(etb->chain_pos);
-
- if (buf_get_u32(device->cur_instr, 0, device->ir_length) != new_instr)
+ if (buf_get_u32(tap->cur_instr, 0, tap->ir_length) != new_instr)
{
- scan_field_t field;
-
- field.device = etb->chain_pos;
- field.num_bits = device->ir_length;
- field.out_value = calloc(CEIL(field.num_bits, 8), 1);
+ struct scan_field field;
+
+ field.tap = tap;
+ field.num_bits = tap->ir_length;
+ field.out_value = calloc(DIV_ROUND_UP(field.num_bits, 8), 1);
buf_set_u32(field.out_value, 0, field.num_bits, new_instr);
- field.out_mask = NULL;
+
field.in_value = NULL;
- field.in_check_value = NULL;
- field.in_check_mask = NULL;
- field.in_handler = NULL;
- field.in_handler_priv = NULL;
-
- jtag_add_ir_scan(1, &field, -1, NULL);
-
+
+ jtag_add_ir_scan(1, &field, jtag_get_end_state());
+
free(field.out_value);
}
-
+
return ERROR_OK;
}
-int etb_scann(etb_t *etb, u32 new_scan_chain)
+static int etb_scann(struct etb *etb, uint32_t new_scan_chain)
{
- if(etb->cur_scan_chain != new_scan_chain)
+ if (etb->cur_scan_chain != new_scan_chain)
{
- scan_field_t field;
-
- field.device = etb->chain_pos;
+ struct scan_field field;
+
+ field.tap = etb->tap;
field.num_bits = 5;
- field.out_value = calloc(CEIL(field.num_bits, 8), 1);
+ field.out_value = calloc(DIV_ROUND_UP(field.num_bits, 8), 1);
buf_set_u32(field.out_value, 0, field.num_bits, new_scan_chain);
- field.out_mask = NULL;
+
field.in_value = NULL;
- field.in_check_value = NULL;
- field.in_check_mask = NULL;
- field.in_handler = NULL;
- field.in_handler_priv = NULL;
-
+
/* select INTEST instruction */
etb_set_instr(etb, 0x2);
- jtag_add_dr_scan(1, &field, -1, NULL);
-
+ jtag_add_dr_scan(1, &field, jtag_get_end_state());
+
etb->cur_scan_chain = new_scan_chain;
-
+
free(field.out_value);
}
return ERROR_OK;
}
-reg_cache_t* etb_build_reg_cache(etb_t *etb)
+static int etb_read_reg_w_check(struct reg *, uint8_t *, uint8_t *);
+static int etb_set_reg_w_exec(struct reg *, uint8_t *);
+
+static int etb_read_reg(struct reg *reg)
+{
+ return etb_read_reg_w_check(reg, NULL, NULL);
+}
+
+static int etb_get_reg(struct reg *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;
+}
+
+static const struct reg_arch_type etb_reg_type = {
+ .get = etb_get_reg,
+ .set = etb_set_reg_w_exec,
+};
+
+struct reg_cache* etb_build_reg_cache(struct etb *etb)
{
- reg_cache_t *reg_cache = malloc(sizeof(reg_cache_t));
- reg_t *reg_list = NULL;
- etb_reg_t *arch_info = NULL;
+ struct reg_cache *reg_cache = malloc(sizeof(struct reg_cache));
+ struct reg *reg_list = NULL;
+ struct etb_reg *arch_info = NULL;
int num_regs = 9;
int i;
-
- /* register a register arch-type for etm registers only once */
- if (etb_reg_arch_type == -1)
- etb_reg_arch_type = register_reg_arch_type(etb_get_reg, etb_set_reg_w_exec);
-
+
/* the actual registers are kept in two arrays */
- reg_list = calloc(num_regs, sizeof(reg_t));
- arch_info = calloc(num_regs, sizeof(etb_reg_t));
-
+ reg_list = calloc(num_regs, sizeof(struct reg));
+ arch_info = calloc(num_regs, sizeof(struct etb_reg));
+
/* fill in values for the reg cache */
reg_cache->name = "etb registers";
reg_cache->next = NULL;
reg_cache->reg_list = reg_list;
reg_cache->num_regs = num_regs;
-
+
/* set up registers */
for (i = 0; i < num_regs; i++)
{
reg_list[i].size = 32;
reg_list[i].dirty = 0;
reg_list[i].valid = 0;
- reg_list[i].bitfield_desc = NULL;
- reg_list[i].num_bitfields = 0;
reg_list[i].value = calloc(1, 4);
reg_list[i].arch_info = &arch_info[i];
- reg_list[i].arch_type = etb_reg_arch_type;
+ reg_list[i].type = &etb_reg_type;
reg_list[i].size = 32;
arch_info[i].addr = i;
arch_info[i].etb = etb;
}
-
+
return reg_cache;
}
-int etb_get_reg(reg_t *reg)
+static void etb_getbuf(jtag_callback_data_t arg)
{
- if (etb_read_reg(reg) != ERROR_OK)
- {
- ERROR("BUG: error scheduling etm register read");
- exit(-1);
- }
-
- if (jtag_execute_queue() != ERROR_OK)
+ uint8_t *in = (uint8_t *)arg;
+
+ *((uint32_t *)in) = buf_get_u32(in, 0, 32);
+}
+
+
+static int etb_read_ram(struct etb *etb, uint32_t *data, int num_frames)
+{
+ struct scan_field fields[3];
+ int i;
+
+ jtag_set_end_state(TAP_IDLE);
+ etb_scann(etb, 0x0);
+ etb_set_instr(etb, 0xc);
+
+ fields[0].tap = etb->tap;
+ fields[0].num_bits = 32;
+ fields[0].out_value = NULL;
+ fields[0].in_value = NULL;
+
+ fields[1].tap = etb->tap;
+ fields[1].num_bits = 7;
+ fields[1].out_value = malloc(1);
+ buf_set_u32(fields[1].out_value, 0, 7, 4);
+ fields[1].in_value = NULL;
+
+ fields[2].tap = etb->tap;
+ fields[2].num_bits = 1;
+ fields[2].out_value = malloc(1);
+ buf_set_u32(fields[2].out_value, 0, 1, 0);
+ fields[2].in_value = NULL;
+
+ jtag_add_dr_scan(3, fields, jtag_get_end_state());
+
+ for (i = 0; i < num_frames; i++)
{
- ERROR("register read failed");
+ /* ensure nR/W reamins set to read */
+ buf_set_u32(fields[2].out_value, 0, 1, 0);
+
+ /* address remains set to 0x4 (RAM data) until we read the last frame */
+ if (i < num_frames - 1)
+ buf_set_u32(fields[1].out_value, 0, 7, 4);
+ else
+ buf_set_u32(fields[1].out_value, 0, 7, 0);
+
+ fields[0].in_value = (uint8_t *)(data + i);
+ jtag_add_dr_scan(3, fields, jtag_get_end_state());
+
+ jtag_add_callback(etb_getbuf, (jtag_callback_data_t)(data + i));
}
-
+
+ jtag_execute_queue();
+
+ free(fields[1].out_value);
+ free(fields[2].out_value);
+
return ERROR_OK;
}
-int etb_read_reg_w_check(reg_t *reg, u8* check_value, u8* check_mask)
+static int etb_read_reg_w_check(struct reg *reg,
+ uint8_t* check_value, uint8_t* check_mask)
{
- etb_reg_t *etb_reg = reg->arch_info;
- u8 reg_addr = etb_reg->addr & 0x7f;
- scan_field_t fields[3];
-
- DEBUG("%i", etb_reg->addr);
+ struct etb_reg *etb_reg = reg->arch_info;
+ uint8_t reg_addr = etb_reg->addr & 0x7f;
+ struct scan_field fields[3];
+
+ LOG_DEBUG("%i", (int)(etb_reg->addr));
- jtag_add_end_state(TAP_RTI);
+ jtag_set_end_state(TAP_IDLE);
etb_scann(etb_reg->etb, 0x0);
etb_set_instr(etb_reg->etb, 0xc);
-
- fields[0].device = etb_reg->etb->chain_pos;
+
+ fields[0].tap = etb_reg->etb->tap;
fields[0].num_bits = 32;
fields[0].out_value = reg->value;
- fields[0].out_mask = NULL;
fields[0].in_value = NULL;
- fields[0].in_check_value = NULL;
- fields[0].in_check_mask = NULL;
- fields[0].in_handler = NULL;
- fields[0].in_handler_priv = NULL;
-
- fields[1].device = etb_reg->etb->chain_pos;
+ fields[0].check_value = NULL;
+ fields[0].check_mask = NULL;
+
+ fields[1].tap = etb_reg->etb->tap;
fields[1].num_bits = 7;
fields[1].out_value = malloc(1);
buf_set_u32(fields[1].out_value, 0, 7, reg_addr);
- fields[1].out_mask = NULL;
fields[1].in_value = NULL;
- fields[1].in_check_value = NULL;
- fields[1].in_check_mask = NULL;
- fields[1].in_handler = NULL;
- fields[1].in_handler_priv = NULL;
+ fields[1].check_value = NULL;
+ fields[1].check_mask = NULL;
- fields[2].device = etb_reg->etb->chain_pos;
+ fields[2].tap = etb_reg->etb->tap;
fields[2].num_bits = 1;
fields[2].out_value = malloc(1);
buf_set_u32(fields[2].out_value, 0, 1, 0);
- fields[2].out_mask = NULL;
fields[2].in_value = NULL;
- fields[2].in_check_value = NULL;
- fields[2].in_check_mask = NULL;
- fields[2].in_handler = NULL;
- fields[2].in_handler_priv = NULL;
-
- jtag_add_dr_scan(3, fields, -1, NULL);
-
+ fields[2].check_value = NULL;
+ fields[2].check_mask = NULL;
+
+ jtag_add_dr_scan(3, fields, jtag_get_end_state());
+
/* read the identification register in the second run, to make sure we
* don't read the ETB data register twice, skipping every second entry
*/
buf_set_u32(fields[1].out_value, 0, 7, 0x0);
fields[0].in_value = reg->value;
- fields[0].in_check_value = check_value;
- fields[0].in_check_mask = check_mask;
-
- jtag_add_dr_scan(3, fields, -1, NULL);
+ fields[0].check_value = check_value;
+ fields[0].check_mask = check_mask;
+
+ jtag_add_dr_scan_check(3, fields, jtag_get_end_state());
free(fields[1].out_value);
free(fields[2].out_value);
-
+
return ERROR_OK;
}
-int etb_read_reg(reg_t *reg)
-{
- return etb_read_reg_w_check(reg, NULL, NULL);
-}
+static int etb_write_reg(struct reg *, uint32_t);
-int etb_set_reg(reg_t *reg, u32 value)
+static int etb_set_reg(struct reg *reg, uint32_t value)
{
- if (etb_write_reg(reg, value) != ERROR_OK)
+ int retval;
+
+ if ((retval = etb_write_reg(reg, value)) != ERROR_OK)
{
- ERROR("BUG: error scheduling etm register write");
- exit(-1);
+ LOG_ERROR("BUG: error scheduling ETB register write");
+ return retval;
}
-
+
buf_set_u32(reg->value, 0, reg->size, value);
reg->valid = 1;
reg->dirty = 0;
-
+
return ERROR_OK;
}
-int etb_set_reg_w_exec(reg_t *reg, u8 *buf)
+static int etb_set_reg_w_exec(struct reg *reg, uint8_t *buf)
{
+ int retval;
+
etb_set_reg(reg, buf_get_u32(buf, 0, reg->size));
-
- if (jtag_execute_queue() != ERROR_OK)
+
+ if ((retval = jtag_execute_queue()) != ERROR_OK)
{
- ERROR("register write failed");
- exit(-1);
+ LOG_ERROR("ETB: register write failed");
+ return retval;
}
return ERROR_OK;
}
-int etb_write_reg(reg_t *reg, u32 value)
+static int etb_write_reg(struct reg *reg, uint32_t value)
{
- etb_reg_t *etb_reg = reg->arch_info;
- u8 reg_addr = etb_reg->addr & 0x7f;
- scan_field_t fields[3];
-
- DEBUG("%i: 0x%8.8x", etb_reg->addr, value);
-
- jtag_add_end_state(TAP_RTI);
+ struct etb_reg *etb_reg = reg->arch_info;
+ uint8_t reg_addr = etb_reg->addr & 0x7f;
+ struct scan_field fields[3];
+
+ LOG_DEBUG("%i: 0x%8.8" PRIx32 "", (int)(etb_reg->addr), value);
+
+ jtag_set_end_state(TAP_IDLE);
etb_scann(etb_reg->etb, 0x0);
etb_set_instr(etb_reg->etb, 0xc);
-
- fields[0].device = etb_reg->etb->chain_pos;
+
+ fields[0].tap = etb_reg->etb->tap;
fields[0].num_bits = 32;
fields[0].out_value = malloc(4);
buf_set_u32(fields[0].out_value, 0, 32, value);
- fields[0].out_mask = NULL;
fields[0].in_value = NULL;
- fields[0].in_check_value = NULL;
- fields[0].in_check_mask = NULL;
- fields[0].in_handler = NULL;
- fields[0].in_handler_priv = NULL;
-
- fields[1].device = etb_reg->etb->chain_pos;
+
+ fields[1].tap = etb_reg->etb->tap;
fields[1].num_bits = 7;
fields[1].out_value = malloc(1);
buf_set_u32(fields[1].out_value, 0, 7, reg_addr);
- fields[1].out_mask = NULL;
fields[1].in_value = NULL;
- fields[1].in_check_value = NULL;
- fields[1].in_check_mask = NULL;
- fields[1].in_handler = NULL;
- fields[1].in_handler_priv = NULL;
- fields[2].device = etb_reg->etb->chain_pos;
+ fields[2].tap = etb_reg->etb->tap;
fields[2].num_bits = 1;
fields[2].out_value = malloc(1);
buf_set_u32(fields[2].out_value, 0, 1, 1);
- fields[2].out_mask = NULL;
+
fields[2].in_value = NULL;
- fields[2].in_check_value = NULL;
- fields[2].in_check_mask = NULL;
- fields[2].in_handler = NULL;
- fields[2].in_handler_priv = NULL;
-
- jtag_add_dr_scan(3, fields, -1, NULL);
-
+
free(fields[0].out_value);
free(fields[1].out_value);
free(fields[2].out_value);
-
+
return ERROR_OK;
}
-int etb_store_reg(reg_t *reg)
+COMMAND_HANDLER(handle_etb_config_command)
{
- return etb_write_reg(reg, buf_get_u32(reg->value, 0, reg->size));
+ struct target *target;
+ struct jtag_tap *tap;
+ struct arm *arm;
+
+ if (CMD_ARGC != 2)
+ {
+ return ERROR_COMMAND_SYNTAX_ERROR;
+ }
+
+ target = get_target(CMD_ARGV[0]);
+
+ if (!target)
+ {
+ LOG_ERROR("ETB: target '%s' not defined", CMD_ARGV[0]);
+ return ERROR_FAIL;
+ }
+
+ arm = target_to_arm(target);
+ if (!is_arm(arm))
+ {
+ command_print(CMD_CTX, "ETB: '%s' isn't an ARM", CMD_ARGV[0]);
+ return ERROR_FAIL;
+ }
+
+ tap = jtag_tap_by_string(CMD_ARGV[1]);
+ if (tap == NULL)
+ {
+ command_print(CMD_CTX, "ETB: TAP %s does not exist", CMD_ARGV[1]);
+ return ERROR_FAIL;
+ }
+
+ if (arm->etm)
+ {
+ struct etb *etb = malloc(sizeof(struct etb));
+
+ arm->etm->capture_driver_priv = etb;
+
+ etb->tap = tap;
+ etb->cur_scan_chain = 0xffffffff;
+ etb->reg_cache = NULL;
+ etb->ram_width = 0;
+ etb->ram_depth = 0;
+ }
+ else
+ {
+ LOG_ERROR("ETM: target has no ETM defined, ETB left unconfigured");
+ return ERROR_FAIL;
+ }
+
+ return ERROR_OK;
}
-int etb_register_commands(struct command_context_s *cmd_ctx, command_t *arm7_9_cmd)
+COMMAND_HANDLER(handle_etb_trigger_percent_command)
{
- register_command(cmd_ctx, arm7_9_cmd, "etb", handle_arm7_9_etb_command, COMMAND_CONFIG, NULL);
+ struct target *target;
+ struct arm *arm;
+ struct etm_context *etm;
+ struct etb *etb;
+
+ target = get_current_target(CMD_CTX);
+ arm = target_to_arm(target);
+ if (!is_arm(arm))
+ {
+ command_print(CMD_CTX, "ETB: current target isn't an ARM");
+ return ERROR_FAIL;
+ }
+
+ etm = arm->etm;
+ if (!etm) {
+ command_print(CMD_CTX, "ETB: target has no ETM configured");
+ return ERROR_FAIL;
+ }
+ if (etm->capture_driver != &etb_capture_driver) {
+ command_print(CMD_CTX, "ETB: target not using ETB");
+ return ERROR_FAIL;
+ }
+ etb = arm->etm->capture_driver_priv;
+
+ if (CMD_ARGC > 0) {
+ uint32_t new_value;
+
+ COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], new_value);
+ if ((new_value < 2) || (new_value > 100))
+ command_print(CMD_CTX,
+ "valid percentages are 2%% to 100%%");
+ else
+ etb->trigger_percent = (unsigned) new_value;
+ }
- register_command(cmd_ctx, arm7_9_cmd, "etb_dump", handle_arm7_9_etb_dump_command, COMMAND_EXEC, "dump current ETB content");
+ command_print(CMD_CTX, "%d percent of tracebuffer fills after trigger",
+ etb->trigger_percent);
return ERROR_OK;
}
-#define PIPESTAT(x) ((x) & 0x7)
-#define TRACEPKT(x) (((x) & 0x7fff8) >> 3)
-#define TRACESYNC(x) (((x) & 0x80000) >> 19)
+static const struct command_registration etb_config_command_handlers[] = {
+ {
+ .name = "config",
+ .handler = &handle_etb_config_command,
+ .mode = COMMAND_CONFIG,
+ .usage = "target tap",
+ },
+ {
+ .name = "trigger_percent",
+ .handler = &handle_etb_trigger_percent_command,
+ .mode = COMMAND_EXEC,
+ .help = "percent of trace buffer to be filled "
+ "after the trigger occurs",
+ .usage = "[percent]",
+ },
+ COMMAND_REGISTRATION_DONE
+};
+static const struct command_registration etb_command_handlers[] = {
+ {
+ .name = "etb",
+ .mode = COMMAND_ANY,
+ .help = "Emebdded Trace Buffer command group",
+ .chain = etb_config_command_handlers,
+ },
+ COMMAND_REGISTRATION_DONE
+};
-int etmv1_next_packet(int trace_depth, u32 *trace_data, int frame, int *port_half, int apo, u8 *packet)
+static int etb_init(struct etm_context *etm_ctx)
{
- while (frame < trace_depth)
- {
- if (apo > 0)
- {
- if (TRACESYNC(trace_data[frame]))
- apo--;
- }
- else
- {
- /* we're looking for a branch address, skip if TRACESYNC isn't set */
- if ((apo == 0) && (!TRACESYNC(trace_data[frame])))
- {
- frame++;
- continue;
- }
-
- /* TRACEPKT is valid if this isn't a TD nor a TRIGGER cycle */
- if (((PIPESTAT(trace_data[frame]) != 0x7) && (PIPESTAT(trace_data[frame]) != 0x6))
- && !((apo == 0) && (!TRACESYNC(trace_data[frame]))))
- {
- if (*port_half == 0)
- {
- *packet = TRACEPKT(trace_data[frame]) & 0xff;
- *port_half = 1;
- }
- else
- {
- *packet = (TRACEPKT(trace_data[frame]) & 0xff00) >> 8;
- *port_half = 0;
- frame++;
- }
- return frame;
- }
- }
- frame++;
+ struct etb *etb = etm_ctx->capture_driver_priv;
+
+ etb->etm_ctx = etm_ctx;
+
+ /* identify ETB RAM depth and width */
+ etb_read_reg(&etb->reg_cache->reg_list[ETB_RAM_DEPTH]);
+ etb_read_reg(&etb->reg_cache->reg_list[ETB_RAM_WIDTH]);
+ jtag_execute_queue();
+
+ etb->ram_depth = buf_get_u32(etb->reg_cache->reg_list[ETB_RAM_DEPTH].value, 0, 32);
+ etb->ram_width = buf_get_u32(etb->reg_cache->reg_list[ETB_RAM_WIDTH].value, 0, 32);
+
+ etb->trigger_percent = 50;
+
+ return ERROR_OK;
+}
+
+static trace_status_t etb_status(struct etm_context *etm_ctx)
+{
+ struct etb *etb = etm_ctx->capture_driver_priv;
+ struct reg *control = &etb->reg_cache->reg_list[ETB_CTRL];
+ struct reg *status = &etb->reg_cache->reg_list[ETB_STATUS];
+ trace_status_t retval = 0;
+ int etb_timeout = 100;
+
+ etb->etm_ctx = etm_ctx;
+
+ /* read control and status registers */
+ etb_read_reg(control);
+ etb_read_reg(status);
+ jtag_execute_queue();
+
+ /* See if it's (still) active */
+ retval = buf_get_u32(control->value, 0, 1) ? TRACE_RUNNING : TRACE_IDLE;
+
+ /* 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(status->value, 1, 1) == 1)
+ retval |= TRACE_TRIGGERED;
+
+ /* 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("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_WARNING("ETB: trace complete without triggering?");
+
+ retval |= TRACE_COMPLETED;
}
-
- /* we reached the end of the trace without finding the packet we're looking for
- * tracing is finished
+
+ /* NOTE: using a trigger is optional; and at least ETB11 has a mode
+ * where it can ignore the trigger counter.
*/
- return -1;
+
+ /* update recorded state */
+ etm_ctx->capture_status = retval;
+
+ return retval;
}
-int handle_arm7_9_etb_dump_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+static int etb_read_trace(struct etm_context *etm_ctx)
{
- int retval;
- target_t *target = get_current_target(cmd_ctx);
- armv4_5_common_t *armv4_5;
- arm7_9_common_t *arm7_9;
- int i, j, k;
+ struct etb *etb = etm_ctx->capture_driver_priv;
int first_frame = 0;
- int last_frame;
- int addressbits_valid = 0;
- u32 address = 0x0;
- u32 *trace_data;
- int port_half = 0;
- int last_instruction = -1;
- u8 branch_reason;
- u8 packet;
- char trace_output[256];
- int trace_output_len;
- u8 apo;
-
- if (arm7_9_get_arch_pointers(target, &armv4_5, &arm7_9) != ERROR_OK)
- {
- command_print(cmd_ctx, "current target isn't an ARM7/ARM9 target");
- return ERROR_OK;
- }
-
- if (!arm7_9->etb)
+ int num_frames = etb->ram_depth;
+ uint32_t *trace_data = NULL;
+ int i, j;
+
+ etb_read_reg(&etb->reg_cache->reg_list[ETB_STATUS]);
+ etb_read_reg(&etb->reg_cache->reg_list[ETB_RAM_WRITE_POINTER]);
+ jtag_execute_queue();
+
+ /* check if we overflowed, and adjust first frame of the trace accordingly
+ * if we didn't overflow, read only up to the frame that would be written next,
+ * i.e. don't read invalid entries
+ */
+ if (buf_get_u32(etb->reg_cache->reg_list[ETB_STATUS].value, 0, 1))
{
- command_print(cmd_ctx, "no ETB configured for current target");
- return ERROR_OK;
+ first_frame = buf_get_u32(etb->reg_cache->reg_list[ETB_RAM_WRITE_POINTER].value, 0, 32);
}
-
- if (!(arm7_9->etb->RAM_depth && arm7_9->etb->RAM_width))
+ else
{
- /* identify ETB RAM depth and width */
- etb_read_reg(&arm7_9->etb->reg_cache->reg_list[ETB_RAM_DEPTH]);
- etb_read_reg(&arm7_9->etb->reg_cache->reg_list[ETB_RAM_WIDTH]);
- jtag_execute_queue();
-
- arm7_9->etb->RAM_depth = buf_get_u32(arm7_9->etb->reg_cache->reg_list[ETB_RAM_DEPTH].value, 0, 32);
- arm7_9->etb->RAM_width = buf_get_u32(arm7_9->etb->reg_cache->reg_list[ETB_RAM_WIDTH].value, 0, 32);
+ num_frames = buf_get_u32(etb->reg_cache->reg_list[ETB_RAM_WRITE_POINTER].value, 0, 32);
}
-
- trace_data = malloc(sizeof(u32) * arm7_9->etb->RAM_depth);
-
- etb_read_reg(&arm7_9->etb->reg_cache->reg_list[ETB_STATUS]);
- etb_read_reg(&arm7_9->etb->reg_cache->reg_list[ETB_RAM_WRITE_POINTER]);
- jtag_execute_queue();
-
- /* check if we overflowed, and adjust first and last frame of the trace accordingly */
- if (buf_get_u32(arm7_9->etb->reg_cache->reg_list[ETB_STATUS].value, 1, 1))
+
+ etb_write_reg(&etb->reg_cache->reg_list[ETB_RAM_READ_POINTER], first_frame);
+
+ /* read data into temporary array for unpacking */
+ trace_data = malloc(sizeof(uint32_t) * num_frames);
+ etb_read_ram(etb, trace_data, num_frames);
+
+ if (etm_ctx->trace_depth > 0)
{
- first_frame = buf_get_u32(arm7_9->etb->reg_cache->reg_list[ETB_RAM_WRITE_POINTER].value, 0, 32);
+ free(etm_ctx->trace_data);
}
-
- last_frame = buf_get_u32(arm7_9->etb->reg_cache->reg_list[ETB_RAM_WRITE_POINTER].value, 0, 32) - 1;
-
- etb_write_reg(&arm7_9->etb->reg_cache->reg_list[ETB_RAM_READ_POINTER], first_frame);
-
- /* read trace data from ETB */
- i = first_frame;
- j = 0;
- do {
- etb_read_reg(&arm7_9->etb->reg_cache->reg_list[ETB_RAM_DATA]);
- jtag_execute_queue();
- trace_data[j++] = buf_get_u32(arm7_9->etb->reg_cache->reg_list[ETB_RAM_DATA].value, 0, 32);
- i++;
- } while ((i % arm7_9->etb->RAM_depth) != (first_frame % arm7_9->etb->RAM_depth));
-
- for (i = 0, j = 0; i < arm7_9->etb->RAM_depth; i++)
+
+ if ((etm_ctx->portmode & ETM_PORT_WIDTH_MASK) == ETM_PORT_4BIT)
+ etm_ctx->trace_depth = num_frames * 3;
+ else if ((etm_ctx->portmode & ETM_PORT_WIDTH_MASK) == ETM_PORT_8BIT)
+ etm_ctx->trace_depth = num_frames * 2;
+ else
+ etm_ctx->trace_depth = num_frames;
+
+ etm_ctx->trace_data = malloc(sizeof(struct etmv1_trace_data) * etm_ctx->trace_depth);
+
+ for (i = 0, j = 0; i < num_frames; i++)
{
- int trigger = 0;
-
- trace_output_len = 0;
-
- /* catch trigger, actual PIPESTAT is encoded in TRACEPKT[2:0] */
- if (PIPESTAT(trace_data[i]) == 0x6)
+ if ((etm_ctx->portmode & ETM_PORT_WIDTH_MASK) == ETM_PORT_4BIT)
{
- trigger = 1;
- trace_data[i] &= ~0x7;
- trace_data[i] |= TRACEPKT(trace_data[i]) & 0x7;
- }
-
- if (addressbits_valid == 32)
- {
- trace_output_len += snprintf(trace_output + trace_output_len, 256 - trace_output_len,
- "%i: 0x%8.8x %s", i, address, (trigger) ? "(TRIGGER) " : "");
+ /* trace word j */
+ etm_ctx->trace_data[j].pipestat = trace_data[i] & 0x7;
+ etm_ctx->trace_data[j].packet = (trace_data[i] & 0x78) >> 3;
+ etm_ctx->trace_data[j].flags = 0;
+ if ((trace_data[i] & 0x80) >> 7)
+ {
+ etm_ctx->trace_data[j].flags |= ETMV1_TRACESYNC_CYCLE;
+ }
+ if (etm_ctx->trace_data[j].pipestat == STAT_TR)
+ {
+ etm_ctx->trace_data[j].pipestat = etm_ctx->trace_data[j].packet & 0x7;
+ etm_ctx->trace_data[j].flags |= ETMV1_TRIGGER_CYCLE;
+ }
+
+ /* trace word j + 1 */
+ etm_ctx->trace_data[j + 1].pipestat = (trace_data[i] & 0x100) >> 8;
+ etm_ctx->trace_data[j + 1].packet = (trace_data[i] & 0x7800) >> 11;
+ etm_ctx->trace_data[j + 1].flags = 0;
+ if ((trace_data[i] & 0x8000) >> 15)
+ {
+ etm_ctx->trace_data[j + 1].flags |= ETMV1_TRACESYNC_CYCLE;
+ }
+ if (etm_ctx->trace_data[j + 1].pipestat == STAT_TR)
+ {
+ etm_ctx->trace_data[j + 1].pipestat = etm_ctx->trace_data[j + 1].packet & 0x7;
+ etm_ctx->trace_data[j + 1].flags |= ETMV1_TRIGGER_CYCLE;
+ }
+
+ /* trace word j + 2 */
+ etm_ctx->trace_data[j + 2].pipestat = (trace_data[i] & 0x10000) >> 16;
+ etm_ctx->trace_data[j + 2].packet = (trace_data[i] & 0x780000) >> 19;
+ etm_ctx->trace_data[j + 2].flags = 0;
+ if ((trace_data[i] & 0x800000) >> 23)
+ {
+ etm_ctx->trace_data[j + 2].flags |= ETMV1_TRACESYNC_CYCLE;
+ }
+ if (etm_ctx->trace_data[j + 2].pipestat == STAT_TR)
+ {
+ etm_ctx->trace_data[j + 2].pipestat = etm_ctx->trace_data[j + 2].packet & 0x7;
+ etm_ctx->trace_data[j + 2].flags |= ETMV1_TRIGGER_CYCLE;
+ }
+
+ j += 3;
}
- else if (addressbits_valid != 0)
+ else if ((etm_ctx->portmode & ETM_PORT_WIDTH_MASK) == ETM_PORT_8BIT)
{
- trace_output_len += snprintf(trace_output + trace_output_len, 256 - trace_output_len,
- "%i: 0x...%x %s", i, address, (trigger) ? "(TRIGGER) " : "");
+ /* trace word j */
+ etm_ctx->trace_data[j].pipestat = trace_data[i] & 0x7;
+ etm_ctx->trace_data[j].packet = (trace_data[i] & 0x7f8) >> 3;
+ etm_ctx->trace_data[j].flags = 0;
+ if ((trace_data[i] & 0x800) >> 11)
+ {
+ etm_ctx->trace_data[j].flags |= ETMV1_TRACESYNC_CYCLE;
+ }
+ if (etm_ctx->trace_data[j].pipestat == STAT_TR)
+ {
+ etm_ctx->trace_data[j].pipestat = etm_ctx->trace_data[j].packet & 0x7;
+ etm_ctx->trace_data[j].flags |= ETMV1_TRIGGER_CYCLE;
+ }
+
+ /* trace word j + 1 */
+ etm_ctx->trace_data[j + 1].pipestat = (trace_data[i] & 0x7000) >> 12;
+ etm_ctx->trace_data[j + 1].packet = (trace_data[i] & 0x7f8000) >> 15;
+ etm_ctx->trace_data[j + 1].flags = 0;
+ if ((trace_data[i] & 0x800000) >> 23)
+ {
+ etm_ctx->trace_data[j + 1].flags |= ETMV1_TRACESYNC_CYCLE;
+ }
+ if (etm_ctx->trace_data[j + 1].pipestat == STAT_TR)
+ {
+ etm_ctx->trace_data[j + 1].pipestat = etm_ctx->trace_data[j + 1].packet & 0x7;
+ etm_ctx->trace_data[j + 1].flags |= ETMV1_TRIGGER_CYCLE;
+ }
+
+ j += 2;
}
else
{
- trace_output_len += snprintf(trace_output + trace_output_len, 256 - trace_output_len,
- "%i: 0xUNK %s", i, (trigger) ? "(TRIGGER) " : "");
- }
-
- switch (PIPESTAT(trace_data[i]))
- {
- case 0x0:
- trace_output_len += snprintf(trace_output + trace_output_len, 256 - trace_output_len,
- "IE");
- break;
- case 0x1:
- trace_output_len += snprintf(trace_output + trace_output_len, 256 - trace_output_len,
- "ID");
- break;
- case 0x2:
- /* Instruction exectued - TRACEPKT might be valid, but belongs to another cycle */
- trace_output_len += snprintf(trace_output + trace_output_len, 256 - trace_output_len,
- "IN");
- break;
- case 0x3:
- /* WAIT cycle - TRACEPKT is valid, but belongs to another cycle */
- trace_output_len += snprintf(trace_output + trace_output_len, 256 - trace_output_len,
- "WT");
- break;
- case 0x4:
- /* following a branch two APO cycles are output on PIPESTAT[1:0]
- * but another BE/BD could overwrite the current branch,
- * or a trigger could cause the APO to be output on TRACEPKT[1:0]
- */
- if ((PIPESTAT(trace_data[i + 1]) == 0x4)
- || (PIPESTAT(trace_data[i + 1]) == 0x5))
- {
- /* another branch occured, we ignore this one */
- j = (j < i + 1) ? i + 1 : j;
- break;
- }
- else if (PIPESTAT(trace_data[i + 1]) == 0x6)
- {
- apo = TRACEPKT(trace_data[i + 1]) & 0x3;
- }
- else
- {
- apo = PIPESTAT(trace_data[i + 1]) & 0x3;
- }
-
- if ((PIPESTAT(trace_data[i + 2]) == 0x4)
- || (PIPESTAT(trace_data[i + 2]) == 0x5))
- {
- j = (j < i + 2) ? i + 1 : j;
- i = i + 1;
- break;
- }
- else if (PIPESTAT(trace_data[i + 2]) == 0x6)
- {
- apo |= (TRACEPKT(trace_data[i + 2]) & 0x3) << 2;
- }
- else
- {
- apo = (PIPESTAT(trace_data[i + 1]) & 0x3) << 2;
- }
-
- branch_reason = -1;
- k = 0;
- do
- {
- if ((j = etmv1_next_packet(arm7_9->etb->RAM_depth, trace_data, j, &port_half, apo, &packet)) != -1)
- {
- address &= ~(0x7f << (k * 7));
- address |= (packet & 0x7f) << (k * 7);
- }
- else
- {
- break;
- }
- k++;
- } while ((k < 5) && (packet & 0x80));
-
- if (addressbits_valid < ((k * 7 > 32) ? 32 : k * 7))
- addressbits_valid = (k * 7 > 32) ? 32 : k * 7;
-
- if (k == 5)
- {
- branch_reason = (packet & 0x7) >> 4;
- trace_output_len += snprintf(trace_output + trace_output_len, 256 - trace_output_len,
- "BE 0x%x (/%i) (%s)", address, addressbits_valid, etmv1_branch_reason_string[branch_reason]);
- }
- else
- {
- trace_output_len += snprintf(trace_output + trace_output_len, 256 - trace_output_len,
- "BE 0x%x (/%i)", address, addressbits_valid);
- }
-
- break;
- case 0x5:
- trace_output_len += snprintf(trace_output + trace_output_len, 256 - trace_output_len,
- "BD");
- break;
- case 0x6:
- /* We catch the trigger event before we get here */
- ERROR("TR pipestat should have been caught earlier");
- trace_output_len += snprintf(trace_output + trace_output_len, 256 - trace_output_len,
- "--");
- break;
- case 0x7:
- /* TRACE disabled - TRACEPKT = invalid */
- trace_output_len += snprintf(trace_output + trace_output_len, 256 - trace_output_len,
- "TD");
- break;
- }
-
- /* PIPESTAT other than WT (b011) and TD (b111) mean we executed an instruction */
- if ((PIPESTAT(trace_data[i]) & 0x3) != 0x3)
- {
- last_instruction = i;
- address += 4;
- }
+ /* trace word j */
+ etm_ctx->trace_data[j].pipestat = trace_data[i] & 0x7;
+ etm_ctx->trace_data[j].packet = (trace_data[i] & 0x7fff8) >> 3;
+ etm_ctx->trace_data[j].flags = 0;
+ if ((trace_data[i] & 0x80000) >> 19)
+ {
+ etm_ctx->trace_data[j].flags |= ETMV1_TRACESYNC_CYCLE;
+ }
+ if (etm_ctx->trace_data[j].pipestat == STAT_TR)
+ {
+ etm_ctx->trace_data[j].pipestat = etm_ctx->trace_data[j].packet & 0x7;
+ etm_ctx->trace_data[j].flags |= ETMV1_TRIGGER_CYCLE;
+ }
- /* The group of packets for a particular instruction cannot start on or before any
- * previous functional PIPESTAT (IE, IN, ID, BE, or BD)
- */
- if (j < last_instruction)
- {
- j = last_instruction + 1;
+ j += 1;
}
+ }
+
+ free(trace_data);
- /* restore trigger PIPESTAT to ensure TRACEPKT is ignored */
- if (trigger == 1)
+ return ERROR_OK;
+}
+
+static int etb_start_capture(struct etm_context *etm_ctx)
+{
+ struct etb *etb = etm_ctx->capture_driver_priv;
+ uint32_t etb_ctrl_value = 0x1;
+ uint32_t trigger_count;
+
+ if ((etm_ctx->portmode & ETM_PORT_MODE_MASK) == ETM_PORT_DEMUXED)
+ {
+ if ((etm_ctx->portmode & ETM_PORT_WIDTH_MASK) != ETM_PORT_8BIT)
{
- trace_data[i] &= ~0x7;
- trace_data[i] |= 0x6;
+ LOG_ERROR("ETB can't run in demultiplexed mode with a 4 or 16 bit port");
+ return ERROR_ETM_PORTMODE_NOT_SUPPORTED;
}
-
- command_print(cmd_ctx, "%s (raw: 0x%8.8x)", trace_output, trace_data[i]);
+ etb_ctrl_value |= 0x2;
}
-
+
+ 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 * etb->trigger_percent) / 100;
+
+ etb_write_reg(&etb->reg_cache->reg_list[ETB_TRIGGER_COUNTER], trigger_count);
+ etb_write_reg(&etb->reg_cache->reg_list[ETB_RAM_WRITE_POINTER], 0x0);
+ etb_write_reg(&etb->reg_cache->reg_list[ETB_CTRL], etb_ctrl_value);
+ jtag_execute_queue();
+
+ /* we're starting a new trace, initialize capture status */
+ etm_ctx->capture_status = TRACE_RUNNING;
+
return ERROR_OK;
}
+
+static int etb_stop_capture(struct etm_context *etm_ctx)
+{
+ struct etb *etb = etm_ctx->capture_driver_priv;
+ struct reg *etb_ctrl_reg = &etb->reg_cache->reg_list[ETB_CTRL];
+
+ etb_write_reg(etb_ctrl_reg, 0x0);
+ jtag_execute_queue();
+
+ /* trace stopped, just clear running flag, but preserve others */
+ etm_ctx->capture_status &= ~TRACE_RUNNING;
+
+ return ERROR_OK;
+}
+
+struct etm_capture_driver etb_capture_driver =
+{
+ .name = "etb",
+ .commands = etb_command_handlers,
+ .init = etb_init,
+ .status = etb_status,
+ .start_capture = etb_start_capture,
+ .stop_capture = etb_stop_capture,
+ .read_trace = etb_read_trace,
+};
Code Review / openocd.git / blobdiff