Committed.
Profiling feature that counts # of times that the queue is flushed.
The nice thing about this feature is that it works across all
interface types.
Adding a 1ms delay where the counter is incremented can be used
to emulate long delays of USB or JTAG over TCP/IP....
> help flush
flush_count returns number of times the JTAG queue has been
flushed
> puts [flush_count]
290
> reset init
JTAG tap: lpc2148.cpu tap/device found: 0x4f1f0f0f (Manufacturer: 0x787, Part:
0xf1f0, Version: 0x4)
JTAG Tap/device matched
srst pulls trst - can not reset into halted mode. Issuing halt after reset.
target state: halted
target halted in Thumb state due to debug-request, current mode: Supervisor
cpsr: 0xa00000f3 pc: 0x7fffd2d8
requesting target halt and executing a soft reset
target state: halted
target halted in ARM state due to debug-request, current mode: Supervisor
cpsr: 0xa00000d3 pc: 0x00000000
> puts [flush_count]
385
### Eclipse Workspace Patch 1.0
#P openocd
Index: src/jtag/jtag.c
===================================================================
--- src/jtag/jtag.c (revision 1673)
+++ src/jtag/jtag.c (working copy)
@@ -43,7 +43,7 @@
#endif
#include <assert.h>
-
+int jtag_flush_queue_count; /* count # of flushes for profiling /
debugging purposes */
/* note that this is not marked as static as it must be available
from outside jtag.c for those
that implement the jtag_xxx() minidriver layer
@@ -243,6 +243,7 @@
static int handle_runtest_command(struct command_context_s *cmd_ctx,
char *cmd, char **args, int argc);
static int handle_irscan_command(struct command_context_s *cmd_ctx,
char *cmd, char **args, int argc);
static int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj
*const *argv);
+static int Jim_Command_flush_count(Jim_Interp *interp, int argc,
Jim_Obj *const *args);
static int handle_verify_ircapture_command(struct command_context_s
*cmd_ctx, char *cmd, char **args, int argc);
@@ -1446,6 +1447,11 @@
void jtag_execute_queue_noclear(void)
{
+ /* each flush can take as much as 1-2ms on high bandwidth low
latency interfaces.
+ * E.g. a JTAG over TCP/IP or USB....
+ */
+ jtag_flush_queue_count++;
+
int retval=interface_jtag_execute_queue();
/* we keep the first error */
if ((jtag_error==ERROR_OK)&&(retval!=ERROR_OK))
@@ -2180,6 +2186,7 @@
register_command(cmd_ctx, NULL, "irscan", handle_irscan_command,
COMMAND_EXEC, "execute IR scan <device> <instr> [dev2] [instr2]
...");
register_jim(cmd_ctx, "drscan", Jim_Command_drscan, "execute DR scan
<device> <num_bits> <value> <num_bits1> <value2> ...");
+ register_jim(cmd_ctx, "flush_count", Jim_Command_flush_count,
"returns number of times the JTAG queue has been flushed");
register_command(cmd_ctx, NULL, "verify_ircapture",
handle_verify_ircapture_command,
COMMAND_ANY, "verify value captured during Capture-IR
<enable|disable>");
@@ -2945,6 +2952,15 @@
return JIM_OK;
}
+
+static int Jim_Command_flush_count(Jim_Interp *interp, int argc,
Jim_Obj *const *args)
+{
+ Jim_SetResult(interp, Jim_NewIntObj(interp, jtag_flush_queue_count));
+
+ return JIM_OK;
+}
+
+
static int handle_verify_ircapture_command(struct command_context_s
*cmd_ctx, char *cmd, char **args, int argc)
{
if (argc == 1)
--
Øyvind Harboe
Embedded software and hardware consulting services
http://consulting.zylin.com
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