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- This speeds up dcc arm7_9 bulk write a little bit and exercises the jtag_add_dr_out() codepath

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- added a check to jtag_add_pathmove() for legal path transitions
- tweaked jtag.h docs a little bit
- made some jtag bypass tests _DEBUG_JTAG_IO_


git-svn-id: svn://svn.berlios.de/openocd/trunk@448 b42882b7-edfa-0310-969c-e2dbd0fdcd60
This commit is contained in:
oharboe
2008-03-05 19:29:41 +00:00
parent 9b25f5eba2
commit 01a5d87d5f
5 changed files with 65 additions and 9 deletions
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19
src/jtag/jtag.c
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@@ -625,13 +625,14 @@ int MINIDRIVER(interface_jtag_add_dr_scan)(int num_fields, scan_field_t *fields,
}
if (!found)
{
#ifdef _DEBUG_JTAG_IO_
/* if a device isn't listed, the BYPASS register should be selected */
if (!jtag_get_device(i)->bypass)
{
ERROR("BUG: no scan data for a device not in BYPASS");
exit(-1);
}
#endif
/* program the scan field to 1 bit length, and ignore it's value */
(*last_cmd)->cmd.scan->fields[field_count].num_bits = 1;
(*last_cmd)->cmd.scan->fields[field_count].out_value = NULL;
@@ -644,11 +645,13 @@ int MINIDRIVER(interface_jtag_add_dr_scan)(int num_fields, scan_field_t *fields,
}
else
{
#ifdef _DEBUG_JTAG_IO_
/* if a device is listed, the BYPASS register must not be selected */
if (jtag_get_device(i)->bypass)
{
WARNING("scan data for a device in BYPASS");
}
#endif
}
}
return ERROR_OK;
@@ -860,6 +863,20 @@ int jtag_add_pathmove(int num_states, enum tap_state *path)
if (cmd_queue_end_state == TAP_TLR)
jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
enum tap_state cur_state=cmd_queue_cur_state;
int i;
for (i=0; i<num_states; i++)
{
if ((tap_transitions[cur_state].low != path[i])&&
(tap_transitions[cur_state].high != path[i]))
{
ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_strings[cur_state], tap_state_strings[path[i]]);
exit(-1);
}
cur_state = path[i];
}
cmd_queue_cur_state = path[num_states - 1];
return interface_jtag_add_pathmove(num_states, path);