- fixed jtag_add_reset(). It no longer causes jtag_execute_queue() to
fail for two of it's return codes. A little bit weird, but compatible with existing codebase. - tightend up error handling. Since the jtag_xxx() is a queue that is either executed as things are added(hw queue) or a software queue, then errors can only be caught during jtag_execute_queue(). No error code is therefore returned from the queuing fn's. git-svn-id: svn://svn.berlios.de/openocd/trunk@492 b42882b7-edfa-0310-969c-e2dbd0fdcd60__archive__
oharboe
parent
970e16603b
commit
9a9cc91bcb
144
src/jtag/jtag.c
144
src/jtag/jtag.c
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@ -34,11 +34,10 @@
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#include <unistd.h>
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/* note that this is not marked as static as it must be available from outside jtag.c for those
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that implement the jtag_xxx() minidriver layer
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*/
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int jtag_error=ERROR_OK;
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static int jtag_error=ERROR_OK;
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char* tap_state_strings[16] =
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@ -217,12 +216,12 @@ int jtag_speed = 0;
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/* forward declarations */
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int jtag_add_statemove(enum tap_state endstate);
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int jtag_add_pathmove(int num_states, enum tap_state *path);
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int jtag_add_runtest(int num_cycles, enum tap_state endstate);
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void jtag_add_statemove(enum tap_state endstate);
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void jtag_add_pathmove(int num_states, enum tap_state *path);
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void jtag_add_runtest(int num_cycles, enum tap_state endstate);
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int jtag_add_reset(int trst, int srst);
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int jtag_add_end_state(enum tap_state endstate);
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int jtag_add_sleep(u32 us);
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void jtag_add_end_state(enum tap_state endstate);
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void jtag_add_sleep(u32 us);
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int jtag_execute_queue(void);
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int jtag_cancel_queue(void);
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@ -387,13 +386,13 @@ void cmd_queue_free()
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cmd_queue_pages = NULL;
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}
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int jtag_add_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state)
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void jtag_add_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state)
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{
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if (jtag_trst == 1)
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{
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WARNING("JTAG command queued, while TRST is low (TAP in reset)");
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jtag_error=ERROR_JTAG_TRST_ASSERTED;
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return ERROR_JTAG_TRST_ASSERTED;
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return;
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}
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if (state != -1)
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@ -410,7 +409,6 @@ int jtag_add_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state)
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int retval=interface_jtag_add_ir_scan(num_fields, fields, cmd_queue_end_state);
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if (retval!=ERROR_OK)
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jtag_error=retval;
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return retval;
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}
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int MINIDRIVER(interface_jtag_add_ir_scan)(int num_fields, scan_field_t *fields, enum tap_state state)
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@ -480,7 +478,7 @@ int MINIDRIVER(interface_jtag_add_ir_scan)(int num_fields, scan_field_t *fields,
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(*last_cmd)->cmd.scan->fields[i].out_value = buf_set_ones(cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
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(*last_cmd)->cmd.scan->fields[i].out_mask = NULL;
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device->bypass = 1;
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}
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/* update device information */
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@ -490,12 +488,13 @@ int MINIDRIVER(interface_jtag_add_ir_scan)(int num_fields, scan_field_t *fields,
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return ERROR_OK;
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}
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int jtag_add_plain_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state)
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void jtag_add_plain_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state)
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{
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if (jtag_trst == 1)
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{
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WARNING("JTAG command queued, while TRST is low (TAP in reset)");
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return jtag_error=ERROR_JTAG_TRST_ASSERTED;
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jtag_error=ERROR_JTAG_TRST_ASSERTED;
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return;
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}
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if (state != -1)
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@ -509,7 +508,9 @@ int jtag_add_plain_ir_scan(int num_fields, scan_field_t *fields, enum tap_state
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cmd_queue_cur_state = cmd_queue_end_state;
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return interface_jtag_add_plain_ir_scan(num_fields, fields, cmd_queue_end_state);
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int retval=interface_jtag_add_plain_ir_scan(num_fields, fields, cmd_queue_end_state);
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if (retval!=ERROR_OK)
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jtag_error=retval;
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}
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int MINIDRIVER(interface_jtag_add_plain_ir_scan)(int num_fields, scan_field_t *fields, enum tap_state state)
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@ -549,12 +550,13 @@ int MINIDRIVER(interface_jtag_add_plain_ir_scan)(int num_fields, scan_field_t *f
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return ERROR_OK;
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}
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int jtag_add_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state)
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void jtag_add_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state)
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{
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if (jtag_trst == 1)
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{
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WARNING("JTAG command queued, while TRST is low (TAP in reset)");
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return jtag_error=ERROR_JTAG_TRST_ASSERTED;
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jtag_error=ERROR_JTAG_TRST_ASSERTED;
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return;
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}
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if (state != -1)
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@ -568,7 +570,9 @@ int jtag_add_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state)
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cmd_queue_cur_state = cmd_queue_end_state;
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return interface_jtag_add_dr_scan(num_fields, fields, cmd_queue_end_state);
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int retval=interface_jtag_add_dr_scan(num_fields, fields, cmd_queue_end_state);
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if (retval!=ERROR_OK)
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jtag_error=retval;
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}
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int MINIDRIVER(interface_jtag_add_dr_scan)(int num_fields, scan_field_t *fields, enum tap_state state)
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@ -691,11 +695,11 @@ void MINIDRIVER(interface_jtag_add_dr_out)(int device_num,
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(*last_cmd)->cmd.scan->num_fields = num_fields + bypass_devices;
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(*last_cmd)->cmd.scan->fields = cmd_queue_alloc((num_fields + bypass_devices) * sizeof(scan_field_t));
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(*last_cmd)->cmd.scan->end_state = end_state;
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for (i = 0; i < jtag_num_devices; i++)
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{
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(*last_cmd)->cmd.scan->fields[field_count].device = i;
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if (i == device_num)
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{
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int j;
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@ -747,12 +751,13 @@ void MINIDRIVER(interface_jtag_add_dr_out)(int device_num,
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int jtag_add_plain_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state)
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void jtag_add_plain_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state)
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{
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if (jtag_trst == 1)
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{
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WARNING("JTAG command queued, while TRST is low (TAP in reset)");
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return jtag_error=ERROR_JTAG_TRST_ASSERTED;
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jtag_error=ERROR_JTAG_TRST_ASSERTED;
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return;
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}
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if (state != -1)
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@ -766,7 +771,9 @@ int jtag_add_plain_dr_scan(int num_fields, scan_field_t *fields, enum tap_state
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cmd_queue_cur_state = cmd_queue_end_state;
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return interface_jtag_add_plain_dr_scan(num_fields, fields, cmd_queue_end_state);
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int retval=interface_jtag_add_plain_dr_scan(num_fields, fields, cmd_queue_end_state);
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if (retval!=ERROR_OK)
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jtag_error=retval;
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}
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int MINIDRIVER(interface_jtag_add_plain_dr_scan)(int num_fields, scan_field_t *fields, enum tap_state state)
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@ -804,12 +811,13 @@ int MINIDRIVER(interface_jtag_add_plain_dr_scan)(int num_fields, scan_field_t *f
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return ERROR_OK;
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}
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int jtag_add_statemove(enum tap_state state)
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void jtag_add_statemove(enum tap_state state)
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{
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if (jtag_trst == 1)
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{
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WARNING("JTAG command queued, while TRST is low (TAP in reset)");
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return jtag_error=ERROR_JTAG_TRST_ASSERTED;
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jtag_error=ERROR_JTAG_TRST_ASSERTED;
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return;
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}
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if (state != -1)
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@ -823,7 +831,10 @@ int jtag_add_statemove(enum tap_state state)
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cmd_queue_cur_state = cmd_queue_end_state;
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return interface_jtag_add_statemove(cmd_queue_end_state);
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int retval;
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retval=interface_jtag_add_statemove(cmd_queue_end_state);
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if (retval!=ERROR_OK)
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jtag_error=retval;
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}
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int MINIDRIVER(interface_jtag_add_statemove)(enum tap_state state)
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@ -843,19 +854,13 @@ int MINIDRIVER(interface_jtag_add_statemove)(enum tap_state state)
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return ERROR_OK;
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}
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int jtag_add_pathmove(int num_states, enum tap_state *path)
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void jtag_add_pathmove(int num_states, enum tap_state *path)
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{
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if (jtag_trst == 1)
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{
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WARNING("JTAG command queued, while TRST is low (TAP in reset)");
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return jtag_error=ERROR_JTAG_TRST_ASSERTED;
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}
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/* the last state has to be a stable state */
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if (tap_move_map[path[num_states - 1]] == -1)
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{
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ERROR("TAP path doesn't finish in a stable state");
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return jtag_error=ERROR_JTAG_NOT_IMPLEMENTED;
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jtag_error=ERROR_JTAG_TRST_ASSERTED;
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return;
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}
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if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
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@ -864,6 +869,13 @@ int jtag_add_pathmove(int num_states, enum tap_state *path)
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if (cmd_queue_end_state == TAP_TLR)
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jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
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/* the last state has to be a stable state */
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if (tap_move_map[path[num_states - 1]] == -1)
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{
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ERROR("TAP path doesn't finish in a stable state");
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jtag_error=ERROR_JTAG_NOT_IMPLEMENTED;
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return;
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}
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enum tap_state cur_state=cmd_queue_cur_state;
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int i;
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@ -880,7 +892,9 @@ int jtag_add_pathmove(int num_states, enum tap_state *path)
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cmd_queue_cur_state = path[num_states - 1];
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return interface_jtag_add_pathmove(num_states, path);
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int retval=interface_jtag_add_pathmove(num_states, path);
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if (retval!=ERROR_OK)
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jtag_error=retval;
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}
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@ -922,13 +936,13 @@ int MINIDRIVER(interface_jtag_add_runtest)(int num_cycles, enum tap_state state)
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return ERROR_OK;
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}
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int jtag_add_runtest(int num_cycles, enum tap_state state)
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void jtag_add_runtest(int num_cycles, enum tap_state state)
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{
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if (jtag_trst == 1)
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{
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jtag_error=ERROR_JTAG_QUEUE_FAILED;
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WARNING("JTAG command queued, while TRST is low (TAP in reset)");
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return ERROR_JTAG_TRST_ASSERTED;
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jtag_error=ERROR_JTAG_TRST_ASSERTED;
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return;
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}
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if (state != -1)
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@ -943,7 +957,9 @@ int jtag_add_runtest(int num_cycles, enum tap_state state)
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cmd_queue_cur_state = cmd_queue_end_state;
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/* executed by sw or hw fifo */
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return interface_jtag_add_runtest(num_cycles, cmd_queue_end_state);
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int retval=interface_jtag_add_runtest(num_cycles, cmd_queue_end_state);
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if (retval!=ERROR_OK)
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jtag_error=retval;
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}
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int jtag_add_reset(int req_trst, int req_srst)
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@ -961,7 +977,8 @@ int jtag_add_reset(int req_trst, int req_srst)
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/* if SRST pulls TRST, we can't fulfill srst == 1 with trst == 0 */
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if (((jtag_reset_config & RESET_SRST_PULLS_TRST) && (req_srst == 1)) && (req_trst == 0))
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{
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return jtag_error=ERROR_JTAG_RESET_WOULD_ASSERT_TRST;
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ERROR("requested reset would assert trst");
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return ERROR_JTAG_RESET_WOULD_ASSERT_TRST;
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}
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/* if TRST pulls SRST, we reset with TAP T-L-R */
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@ -974,7 +991,7 @@ int jtag_add_reset(int req_trst, int req_srst)
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if (req_srst && !(jtag_reset_config & RESET_HAS_SRST))
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{
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ERROR("requested nSRST assertion, but the current configuration doesn't support this");
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return jtag_error=ERROR_JTAG_RESET_CANT_SRST;
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return ERROR_JTAG_RESET_CANT_SRST;
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}
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if (req_trst && !(jtag_reset_config & RESET_HAS_TRST))
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@ -1009,7 +1026,6 @@ int jtag_add_reset(int req_trst, int req_srst)
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jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
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jtag_add_end_state(TAP_TLR);
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jtag_add_statemove(TAP_TLR);
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return ERROR_OK;
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}
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@ -1029,9 +1045,7 @@ int jtag_add_reset(int req_trst, int req_srst)
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if (jtag_ntrst_delay)
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jtag_add_sleep(jtag_ntrst_delay * 1000);
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}
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return retval;
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return ERROR_OK;
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}
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int MINIDRIVER(interface_jtag_add_reset)(int req_trst, int req_srst)
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@ -1068,12 +1082,13 @@ int MINIDRIVER(interface_jtag_add_end_state)(enum tap_state state)
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return ERROR_OK;
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}
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int jtag_add_end_state(enum tap_state state)
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void jtag_add_end_state(enum tap_state state)
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{
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if (state != -1)
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cmd_queue_end_state = state;
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int retval = interface_jtag_add_end_state(cmd_queue_end_state);
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return retval;
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if (retval!=ERROR_OK)
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jtag_error=retval;
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}
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int MINIDRIVER(interface_jtag_add_sleep)(u32 us)
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@ -1092,9 +1107,12 @@ int MINIDRIVER(interface_jtag_add_sleep)(u32 us)
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return ERROR_OK;
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}
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int jtag_add_sleep(u32 us)
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void jtag_add_sleep(u32 us)
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{
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return interface_jtag_add_sleep(us);
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int retval=interface_jtag_add_sleep(us);
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if (retval!=ERROR_OK)
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jtag_error=retval;
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return;
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}
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int jtag_scan_size(scan_command_t *cmd)
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@ -1299,7 +1317,7 @@ int jtag_execute_queue(void)
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int retval=interface_jtag_execute_queue();
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if (retval==ERROR_OK)
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{
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retval=jtag_error;
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retval=jtag_error;
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}
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jtag_error=ERROR_OK;
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return retval;
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@ -1413,7 +1431,7 @@ int jtag_examine_chain()
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if (device_count != jtag_num_devices)
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{
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ERROR("number of discovered devices in JTAG chain (%i) doesn't match configuration (%i)",
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device_count, jtag_num_devices);
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device_count, jtag_num_devices);
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ERROR("check the config file and ensure proper JTAG communication (connections, speed, ...)");
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return ERROR_JTAG_INIT_FAILED;
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}
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@ -1561,7 +1579,7 @@ int jtag_init(struct command_context_s *cmd_ctx)
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{
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ERROR("trying to validate configured JTAG chain anyway...");
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}
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while (jtag_validate_chain() != ERROR_OK)
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{
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validate_tries++;
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@ -1576,6 +1594,7 @@ int jtag_init(struct command_context_s *cmd_ctx)
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return ERROR_OK;
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}
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int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
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{
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int i;
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@ -1649,7 +1668,7 @@ int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, cha
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jtag_register_event_callback(jtag_reset_callback, (*last_device_p));
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jtag_num_devices++;
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return ERROR_OK;
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}
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@ -1816,12 +1835,10 @@ int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char
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{
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int trst = -1;
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int srst = -1;
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int retval;
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if (argc < 2)
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{
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return ERROR_COMMAND_SYNTAX_ERROR;
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}
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if (args[0][0] == '1')
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@ -1845,20 +1862,7 @@ int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char
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if (!jtag && jtag_interface_init(cmd_ctx) != ERROR_OK)
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return ERROR_JTAG_INIT_FAILED;
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if ((retval = jtag_add_reset(trst, srst)) != ERROR_OK)
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{
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switch (retval)
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{
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case ERROR_JTAG_RESET_WOULD_ASSERT_TRST:
|
||||
command_print(cmd_ctx, "requested reset would assert trst\nif this is acceptable, use jtag_reset 1 %c", args[1][0]);
|
||||
break;
|
||||
case ERROR_JTAG_RESET_CANT_SRST:
|
||||
command_print(cmd_ctx, "can't assert srst because the current reset_config doesn't support it");
|
||||
break;
|
||||
default:
|
||||
command_print(cmd_ctx, "unknown error");
|
||||
}
|
||||
}
|
||||
jtag_add_reset(trst, srst);
|
||||
jtag_execute_queue();
|
||||
|
||||
return ERROR_OK;
|
||||
|
|
@ -1993,7 +1997,7 @@ int handle_drscan_command(struct command_context_s *cmd_ctx, char *cmd, char **a
|
|||
free(fields[i].out_value);
|
||||
|
||||
free(fields);
|
||||
|
||||
|
||||
return ERROR_OK;
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -245,13 +245,13 @@ extern int jtag_init(struct command_context_s *cmd_ctx);
|
|||
extern int jtag_register_commands(struct command_context_s *cmd_ctx);
|
||||
|
||||
/* JTAG interface, can be implemented with a software or hardware fifo */
|
||||
extern int jtag_add_ir_scan(int num_fields, scan_field_t *fields, enum tap_state endstate);
|
||||
extern void jtag_add_ir_scan(int num_fields, scan_field_t *fields, enum tap_state endstate);
|
||||
extern int interface_jtag_add_ir_scan(int num_fields, scan_field_t *fields, enum tap_state endstate);
|
||||
extern int jtag_add_dr_scan(int num_fields, scan_field_t *fields, enum tap_state endstate);
|
||||
extern void jtag_add_dr_scan(int num_fields, scan_field_t *fields, enum tap_state endstate);
|
||||
extern int interface_jtag_add_dr_scan(int num_fields, scan_field_t *fields, enum tap_state endstate);
|
||||
extern int jtag_add_plain_ir_scan(int num_fields, scan_field_t *fields, enum tap_state endstate);
|
||||
extern void jtag_add_plain_ir_scan(int num_fields, scan_field_t *fields, enum tap_state endstate);
|
||||
extern int interface_jtag_add_plain_ir_scan(int num_fields, scan_field_t *fields, enum tap_state endstate);
|
||||
extern int jtag_add_plain_dr_scan(int num_fields, scan_field_t *fields, enum tap_state endstate);
|
||||
extern void jtag_add_plain_dr_scan(int num_fields, scan_field_t *fields, enum tap_state endstate);
|
||||
extern int interface_jtag_add_plain_dr_scan(int num_fields, scan_field_t *fields, enum tap_state endstate);
|
||||
/* execute a state transition within the JTAG standard, but the exact path
|
||||
* path that is taken is undefined. Many implementations use precisely
|
||||
|
|
@ -274,7 +274,7 @@ extern int interface_jtag_add_plain_dr_scan(int num_fields, scan_field_t *fields
|
|||
* NB! a jtag_add_statemove() to the current state is not
|
||||
* a no-operation.
|
||||
*/
|
||||
extern int jtag_add_statemove(enum tap_state endstate);
|
||||
extern void jtag_add_statemove(enum tap_state endstate);
|
||||
extern int interface_jtag_add_statemove(enum tap_state endstate);
|
||||
/* A list of unambigious single clock state transitions, not
|
||||
* all drivers can support this, but it is required for e.g.
|
||||
|
|
@ -285,19 +285,28 @@ extern int interface_jtag_add_statemove(enum tap_state endstate);
|
|||
* Note that the first on the list must be reachable
|
||||
* via a single transition from the current state.
|
||||
*/
|
||||
extern int jtag_add_pathmove(int num_states, enum tap_state *path);
|
||||
extern void jtag_add_pathmove(int num_states, enum tap_state *path);
|
||||
extern int interface_jtag_add_pathmove(int num_states, enum tap_state *path);
|
||||
/* go to TAP_RTI, if we're not already there and cycle
|
||||
* precisely num_cycles in the TAP_RTI after which move
|
||||
* to the end state, if it is != TAP_RTI
|
||||
*/
|
||||
extern int jtag_add_runtest(int num_cycles, enum tap_state endstate);
|
||||
extern void jtag_add_runtest(int num_cycles, enum tap_state endstate);
|
||||
extern int interface_jtag_add_runtest(int num_cycles, enum tap_state endstate);
|
||||
/* If it fails and one of the error messages below are returned, nothing is
|
||||
* added to the queue and jtag_execute() won't return an error code.
|
||||
*
|
||||
* ERROR_JTAG_RESET_WOULD_ASSERT_TRST
|
||||
* ERROR_JTAG_RESET_CANT_SRST
|
||||
*
|
||||
* All other error codes will result in jtag_execute_queue() returning
|
||||
* an error.
|
||||
*/
|
||||
extern int jtag_add_reset(int trst, int srst);
|
||||
extern int interface_jtag_add_reset(int trst, int srst);
|
||||
extern int jtag_add_end_state(enum tap_state endstate);
|
||||
extern void jtag_add_end_state(enum tap_state endstate);
|
||||
extern int interface_jtag_add_end_state(enum tap_state endstate);
|
||||
extern int jtag_add_sleep(u32 us);
|
||||
extern void jtag_add_sleep(u32 us);
|
||||
extern int interface_jtag_add_sleep(u32 us);
|
||||
|
||||
|
||||
|
|
@ -339,7 +348,6 @@ extern int jtag_register_event_callback(int (*callback)(enum jtag_event event, v
|
|||
|
||||
extern int jtag_verify_capture_ir;
|
||||
|
||||
|
||||
/* error codes
|
||||
* JTAG subsystem uses codes between -100 and -199 */
|
||||
|
||||
|
|
|
|||
|
|
@ -45,7 +45,8 @@ int arm11_add_ir_scan_vc(int num_fields, scan_field_t *fields, enum tap_state st
|
|||
if (cmd_queue_cur_state == TAP_PI)
|
||||
jtag_add_pathmove(asizeof(arm11_move_pi_to_si_via_ci), arm11_move_pi_to_si_via_ci);
|
||||
|
||||
return jtag_add_ir_scan(num_fields, fields, state);
|
||||
jtag_add_ir_scan(num_fields, fields, state);
|
||||
return ERROR_OK;
|
||||
}
|
||||
|
||||
enum tap_state arm11_move_pd_to_sd_via_cd[] =
|
||||
|
|
@ -58,7 +59,8 @@ int arm11_add_dr_scan_vc(int num_fields, scan_field_t *fields, enum tap_state st
|
|||
if (cmd_queue_cur_state == TAP_PD)
|
||||
jtag_add_pathmove(asizeof(arm11_move_pd_to_sd_via_cd), arm11_move_pd_to_sd_via_cd);
|
||||
|
||||
return jtag_add_dr_scan(num_fields, fields, state);
|
||||
jtag_add_dr_scan(num_fields, fields, state);
|
||||
return ERROR_OK;
|
||||
}
|
||||
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue