jim_wide w;
int x;
int e;
- int reqbits;
Jim_Nvp *n;
char *cp;
const Jim_Nvp opts[] = {
pTap->ir_capture_mask = 0x03;
pTap->ir_capture_value = 0x01;
- /* clear flags for "required options" them as we find them */
- reqbits = 1;
-
while (goi->argc) {
e = Jim_GetOpt_Nvp(goi, opts, &n);
if (e != JIM_OK) {
pTap->dotted_name,
(int) w);
pTap->ir_length = w;
- reqbits = 0;
break;
case NTAP_OPT_IRMASK:
if (is_bad_irval(pTap->ir_length, w)) {
pTap->enabled = !pTap->disabled_after_reset;
/* Did all the required option bits get cleared? */
- if (0 == reqbits)
+ if (pTap->ir_length != 0)
{
jtag_tap_init(pTap);
return ERROR_OK;
}
Jim_SetResult_sprintf(goi->interp,
- "newtap: %s missing required parameters",
+ "newtap: %s missing IR length",
pTap->dotted_name);
jtag_tap_free(pTap);
return JIM_ERR;
COMMAND_CONFIG, "(DEPRECATED) jtag_device <ir_length> <ir_expected> <ir_mask>");
register_command(cmd_ctx, NULL, "reset_config", handle_reset_config_command,
COMMAND_ANY,
- "[none/trst_only/srst_only/trst_and_srst] [srst_pulls_trst/trst_pulls_srst] [combined/separate] [trst_push_pull/trst_open_drain] [srst_push_pull/srst_open_drain]");
+ "reset_config "
+ "[none|trst_only|srst_only|trst_and_srst] "
+ "[srst_pulls_trst|trst_pulls_srst|combined|separate] "
+ "[srst_gates_jtag|srst_nogate] "
+ "[trst_push_pull|trst_open_drain] "
+ "[srst_push_pull|srst_open_drain]");
register_command(cmd_ctx, NULL, "jtag_nsrst_delay", handle_jtag_nsrst_delay_command,
COMMAND_ANY, "jtag_nsrst_delay <ms> - delay after deasserting srst in ms");
register_command(cmd_ctx, NULL, "jtag_ntrst_delay", handle_jtag_ntrst_delay_command,
int new_cfg = 0;
int mask = 0;
- if (argc < 1)
- return ERROR_COMMAND_SYNTAX_ERROR;
-
/* Original versions cared about the order of these tokens:
* reset_config signals [combination [trst_type [srst_type]]]
* They also clobbered the previous configuration even on error.
int tmp = 0;
int m;
- m = RESET_SRST_GATES_JTAG;
- tmp = 0;
+ /* gating */
+ m = RESET_SRST_NO_GATING;
if (strcmp(*args, "srst_gates_jtag") == 0)
- {
- tmp = RESET_SRST_GATES_JTAG;
- goto next;
+ /* default: don't use JTAG while SRST asserted */;
+ else if (strcmp(*args, "srst_nogate") == 0)
+ tmp = RESET_SRST_NO_GATING;
+ else
+ m = 0;
+ if (mask & m) {
+ LOG_ERROR("extra reset_config %s spec (%s)",
+ "gating", *args);
+ return ERROR_INVALID_ARGUMENTS;
}
+ if (m)
+ goto next;
/* signals */
m = RESET_HAS_TRST | RESET_HAS_SRST;
}
/* clear previous values of those bits, save new values */
- enum reset_types old_cfg = jtag_get_reset_config();
- old_cfg &= ~mask;
- new_cfg |= old_cfg;
- jtag_set_reset_config(new_cfg);
+ if (mask) {
+ int old_cfg = jtag_get_reset_config();
+
+ old_cfg &= ~mask;
+ new_cfg |= old_cfg;
+ jtag_set_reset_config(new_cfg);
+ } else
+ new_cfg = jtag_get_reset_config();
+
+
+ /*
+ * Display the (now-)current reset mode
+ */
+ char *modes[5];
+
+ /* minimal JTAG has neither SRST nor TRST (so that's the default) */
+ switch (new_cfg & (RESET_HAS_TRST | RESET_HAS_SRST)) {
+ case RESET_HAS_SRST:
+ modes[0] = "srst_only";
+ break;
+ case RESET_HAS_TRST:
+ modes[0] = "trst_only";
+ break;
+ case RESET_TRST_AND_SRST:
+ modes[0] = "trst_and_srst";
+ break;
+ default:
+ modes[0] = "none";
+ break;
+ }
+
+ /* normally SRST and TRST are decoupled; but bugs happen ... */
+ switch (new_cfg & (RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST)) {
+ case RESET_SRST_PULLS_TRST:
+ modes[1] = "srst_pulls_trst";
+ break;
+ case RESET_TRST_PULLS_SRST:
+ modes[1] = "trst_pulls_srst";
+ break;
+ case RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST:
+ modes[1] = "combined";
+ break;
+ default:
+ modes[1] = "separate";
+ break;
+ }
+
+ /* TRST-less connectors include Altera, Xilinx, and minimal JTAG */
+ if (new_cfg & RESET_HAS_TRST) {
+ if (new_cfg & RESET_TRST_OPEN_DRAIN)
+ modes[3] = " trst_open_drain";
+ else
+ modes[3] = " trst_push_pull";
+ } else
+ modes[3] = "";
+
+ /* SRST-less connectors include TI-14, Xilinx, and minimal JTAG */
+ if (new_cfg & RESET_HAS_SRST) {
+ if (new_cfg & RESET_SRST_NO_GATING)
+ modes[2] = " srst_nogate";
+ else
+ modes[2] = " srst_gates_jtag";
+
+ if (new_cfg & RESET_SRST_PUSH_PULL)
+ modes[4] = " srst_push_pull";
+ else
+ modes[4] = " srst_open_drain";
+ } else {
+ modes[2] = "";
+ modes[4] = "";
+ }
+
+ command_print(cmd_ctx, "%s %s%s%s%s",
+ modes[0], modes[1],
+ modes[2], modes[3], modes[4]);
return ERROR_OK;
}
* For "irscan" or "drscan" commands, the "end" (really, "next") state
* should be stable ... and *NOT* a shift state, otherwise free-running
* jtag clocks could change the values latched by the update state.
+ * Not surprisingly, this is the same constraint as SVF; the "irscan"
+ * and "drscan" commands are a write-only subset of what SVF provides.
*/
static bool scan_is_safe(tap_state_t state)
{
if (argc >= 4) {
/* have at least one pair of numbers. */
/* is last pair the magic text? */
- if (0 == strcmp("-endstate", args[ argc - 2 ])) {
- const char *cpA;
- const char *cpS;
- cpA = args[ argc-1 ];
- for (endstate = 0 ; endstate < TAP_NUM_STATES ; endstate++) {
- cpS = tap_state_name(endstate);
- if (0 == strcmp(cpA, cpS)) {
- break;
- }
- }
- if (endstate >= TAP_NUM_STATES) {
+ if (strcmp("-endstate", args[argc - 2]) == 0) {
+ endstate = tap_state_by_name(args[argc - 1]);
+ if (endstate == TAP_INVALID)
return ERROR_COMMAND_SYNTAX_ERROR;
- } else {
- if (!scan_is_safe(endstate))
- LOG_WARNING("irscan with unsafe "
- "endstate \"%s\"", cpA);
- /* found - remove the last 2 args */
- argc -= 2;
- }
+ if (!scan_is_safe(endstate))
+ LOG_WARNING("unstable irscan endstate \"%s\"",
+ args[argc - 1]);
+ argc -= 2;
}
}
Code Review / openocd.git / blobdiff