int arm11_add_debug_SCAN_N(struct arm11_common *arm11,
uint8_t chain, tap_state_t state)
{
/* Don't needlessly switch the scan chain.
* NOTE: the ITRSEL instruction fakes SCREG changing;
* but leaves its actual value unchanged.
*/
if (arm11->jtag_info.cur_scan_chain == chain) {
JTAG_DEBUG("SCREG <= %d SKIPPED", chain);
return jtag_add_statemove((state == ARM11_TAP_DEFAULT)
? TAP_DRPAUSE : state);
}
JTAG_DEBUG("SCREG <= %d", chain);
arm11_add_IR(arm11, ARM11_SCAN_N, ARM11_TAP_DEFAULT);
struct scan_field field;
uint8_t tmp[1];
arm11_setup_field(arm11, 5, &chain, &tmp, &field);
arm11_add_dr_scan_vc(1, &field, state == ARM11_TAP_DEFAULT ? TAP_DRPAUSE : state);
jtag_execute_queue_noclear();
arm11_in_handler_SCAN_N(tmp);
arm11->jtag_info.cur_scan_chain = chain;
return jtag_execute_queue();
}
static int Jim_Command_pathmove(Jim_Interp *interp, int argc, Jim_Obj *const *args)
{
tap_state_t states[8];
if ((argc < 2) || ((size_t)argc > (ARRAY_SIZE(states) + 1)))
{
Jim_WrongNumArgs(interp, 1, args, "wrong arguments");
return JIM_ERR;
}
script_debug(interp, "pathmove", argc, args);
int i;
for (i = 0; i < argc-1; i++)
{
const char *cp;
cp = Jim_GetString(args[i + 1], NULL);
states[i] = tap_state_by_name(cp);
if (states[i] < 0)
{
/* update the error message */
Jim_SetResultFormatted(interp,"endstate: %s invalid", cp);
return JIM_ERR;
}
}
if ((jtag_add_statemove(states[0]) != ERROR_OK) || (jtag_execute_queue()!= ERROR_OK))
{
Jim_SetResultString(interp, "pathmove: jtag execute failed",-1);
return JIM_ERR;
}
jtag_add_pathmove(argc-2, states + 1);
if (jtag_execute_queue()!= ERROR_OK)
{
Jim_SetResultString(interp, "pathmove: failed",-1);
return JIM_ERR;
}
return JIM_OK;
}
int arm11_add_debug_SCAN_N(struct arm11_common *arm11,
uint8_t chain, tap_state_t state)
{
/* Don't needlessly switch the scan chain.
* NOTE: the ITRSEL instruction fakes SCREG changing;
* but leaves its actual value unchanged.
*/
#if 0
// FIX!!! the optimization below is broken because we do not
// invalidate the cur_scan_chain upon a TRST/TMS. See arm_jtag.c
// for example on how to invalidate cur_scan_chain. Tested patches gladly
// accepted!
if (arm11->jtag_info.cur_scan_chain == chain) {
JTAG_DEBUG("SCREG <= %d SKIPPED", chain);
return jtag_add_statemove((state == ARM11_TAP_DEFAULT)
? TAP_DRPAUSE : state);
}
#endif
JTAG_DEBUG("SCREG <= %d", chain);
arm11_add_IR(arm11, ARM11_SCAN_N, ARM11_TAP_DEFAULT);
struct scan_field field;
uint8_t tmp[1];
arm11_setup_field(arm11, 5, &chain, &tmp, &field);
arm11_add_dr_scan_vc(arm11->arm.target->tap, 1, &field, state == ARM11_TAP_DEFAULT ? TAP_DRPAUSE : state);
jtag_execute_queue_noclear();
arm11_in_handler_SCAN_N(tmp);
arm11->jtag_info.cur_scan_chain = chain;
return jtag_execute_queue();
}
