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Code Issues Projects Releases Wiki Activity

- retired unused jtag events. The code was incorrect 

- hopefully clarified the difference between TRST and TMS reset.
- added DEBUG() statements w.r.t. state changes
- TRST released and moving out of TAP_TLR are completely
different events. Only TRST released has a DEBUG() statement


git-svn-id: svn://svn.berlios.de/openocd/trunk@496 b42882b7-edfa-0310-969c-e2dbd0fdcd60
This commit is contained in:
oharboe 2008-03-11 21:16:57 +00:00
parent 0fe2a5435a
commit 1812a3535c
2 changed files with 8 additions and 32 deletions
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35
src/jtag/jtag.c
View File

@ -106,10 +106,7 @@ tap_transition_t tap_transitions[16] =
char* jtag_event_strings[] =
{
"SRST asserted",
"TRST asserted",
"SRST released",
"TRST released"
"JTAG controller reset(tms or TRST)"
};
enum tap_state end_state = TAP_TLR;
@ -406,9 +403,6 @@ void jtag_add_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state
if (state != -1)
cmd_queue_end_state = state;
if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
jtag_call_event_callbacks(JTAG_TRST_RELEASED);
if (cmd_queue_end_state == TAP_TLR)
jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
@ -508,9 +502,6 @@ void jtag_add_plain_ir_scan(int num_fields, scan_field_t *fields, enum tap_state
if (state != -1)
cmd_queue_end_state = state;
if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
jtag_call_event_callbacks(JTAG_TRST_RELEASED);
if (cmd_queue_end_state == TAP_TLR)
jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
@ -570,9 +561,6 @@ void jtag_add_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state
if (state != -1)
cmd_queue_end_state = state;
if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
jtag_call_event_callbacks(JTAG_TRST_RELEASED);
if (cmd_queue_end_state == TAP_TLR)
jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
@ -771,9 +759,6 @@ void jtag_add_plain_dr_scan(int num_fields, scan_field_t *fields, enum tap_state
if (state != -1)
cmd_queue_end_state = state;
if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
jtag_call_event_callbacks(JTAG_TRST_RELEASED);
if (cmd_queue_end_state == TAP_TLR)
jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
@ -831,9 +816,6 @@ void jtag_add_statemove(enum tap_state state)
if (state != -1)
cmd_queue_end_state = state;
if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
jtag_call_event_callbacks(JTAG_TRST_RELEASED);
if (cmd_queue_end_state == TAP_TLR)
jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
@ -871,9 +853,6 @@ void jtag_add_pathmove(int num_states, enum tap_state *path)
return;
}
if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
jtag_call_event_callbacks(JTAG_TRST_RELEASED);
if (cmd_queue_end_state == TAP_TLR)
jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
@ -956,9 +935,6 @@ void jtag_add_runtest(int num_cycles, enum tap_state state)
if (state != -1)
cmd_queue_end_state = state;
if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
jtag_call_event_callbacks(JTAG_TRST_RELEASED);
if (cmd_queue_end_state == TAP_TLR)
jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
@ -1020,20 +996,21 @@ int jtag_add_reset(int req_trst, int req_srst)
if (jtag_srst)
{
jtag_call_event_callbacks(JTAG_SRST_ASSERTED);
DEBUG("SRST line asserted");
}
else
{
jtag_call_event_callbacks(JTAG_SRST_RELEASED);
DEBUG("SRST line released");
if (jtag_nsrst_delay)
jtag_add_sleep(jtag_nsrst_delay * 1000);
}
if (trst_with_tms)
{
jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
DEBUG("JTAG reset with tms instead of TRST");
jtag_add_end_state(TAP_TLR);
jtag_add_statemove(TAP_TLR);
jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
return ERROR_OK;
}
@ -1042,6 +1019,7 @@ int jtag_add_reset(int req_trst, int req_srst)
/* we just asserted nTRST, so we're now in Test-Logic-Reset,
* and inform possible listeners about this
*/
DEBUG("TRST line asserted");
cmd_queue_cur_state = TAP_TLR;
jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
}
@ -1050,6 +1028,7 @@ int jtag_add_reset(int req_trst, int req_srst)
/* the nTRST line got deasserted, so we're still in Test-Logic-Reset,
* but we might want to add a delay to give the TAP time to settle
*/
DEBUG("Now in TAP_TLR - Test-Logic-Reset(either due to TRST line asserted or tms reset)");
if (jtag_ntrst_delay)
jtag_add_sleep(jtag_ntrst_delay * 1000);
}

5
src/jtag/jtag.h
View File

@ -200,10 +200,7 @@ typedef struct jtag_interface_s
enum jtag_event
{
JTAG_SRST_ASSERTED,
JTAG_TRST_ASSERTED,
JTAG_SRST_RELEASED,
JTAG_TRST_RELEASED,
JTAG_TRST_ASSERTED
};
extern char* jtag_event_strings[];