/*************************************************************************** * Copyright (C) 2005 by Dominic Rath * * Dominic.Rath@gmx.de * * * * This program is free software; you can redistribute it and/or modify * * it under the terms of the GNU General Public License as published by * * the Free Software Foundation; either version 2 of the License, or * * (at your option) any later version. * * * * This program is distributed in the hope that it will be useful, * * but WITHOUT ANY WARRANTY; without even the implied warranty of * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * * GNU General Public License for more details. * * * * You should have received a copy of the GNU General Public License * * along with this program; if not, write to the * * Free Software Foundation, Inc., * * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * ***************************************************************************/ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "replacements.h" #include "jtag.h" #include "command.h" #include "log.h" #include "interpreter.h" #include "stdlib.h" #include "string.h" #include char* tap_state_strings[16] = { "tlr", "sds", "cd", "sd", "e1d", "pd", "e2d", "ud", "rti", "sis", "ci", "si", "e1i", "pi", "e2i", "ui" }; typedef struct cmd_queue_page_s { void *address; size_t used; struct cmd_queue_page_s *next; } cmd_queue_page_t; #define CMD_QUEUE_PAGE_SIZE (1024 * 1024) static cmd_queue_page_t *cmd_queue_pages = NULL; /* tap_move[i][j]: tap movement command to go from state i to state j * 0: Test-Logic-Reset * 1: Run-Test/Idle * 2: Shift-DR * 3: Pause-DR * 4: Shift-IR * 5: Pause-IR * * SD->SD and SI->SI have to be caught in interface specific code */ u8 tap_move[6][6] = { /* TLR RTI SD PD SI PI */ {0x7f, 0x00, 0x17, 0x0a, 0x1b, 0x16}, /* TLR */ {0x7f, 0x00, 0x25, 0x05, 0x2b, 0x0b}, /* RTI */ {0x7f, 0x31, 0x00, 0x01, 0x0f, 0x2f}, /* SD */ {0x7f, 0x30, 0x20, 0x17, 0x1e, 0x2f}, /* PD */ {0x7f, 0x31, 0x07, 0x17, 0x00, 0x01}, /* SI */ {0x7f, 0x30, 0x1c, 0x17, 0x20, 0x2f} /* PI */ }; int tap_move_map[16] = { 0, -1, -1, 2, -1, 3, -1, -1, 1, -1, -1, 4, -1, 5, -1, -1 }; tap_transition_t tap_transitions[16] = { {TAP_TLR, TAP_RTI}, /* TLR */ {TAP_SIS, TAP_CD}, /* SDS */ {TAP_E1D, TAP_SD}, /* CD */ {TAP_E1D, TAP_SD}, /* SD */ {TAP_UD, TAP_PD}, /* E1D */ {TAP_E2D, TAP_PD}, /* PD */ {TAP_UD, TAP_SD}, /* E2D */ {TAP_SDS, TAP_RTI}, /* UD */ {TAP_SDS, TAP_RTI}, /* RTI */ {TAP_TLR, TAP_CI}, /* SIS */ {TAP_E1I, TAP_SI}, /* CI */ {TAP_E1I, TAP_SI}, /* SI */ {TAP_UI, TAP_PI}, /* E1I */ {TAP_E2I, TAP_PI}, /* PI */ {TAP_UI, TAP_SI}, /* E2I */ {TAP_SDS, TAP_RTI} /* UI */ }; char* jtag_event_strings[] = { "SRST asserted", "TRST asserted", "SRST released", "TRST released" }; enum tap_state end_state = TAP_TLR; enum tap_state cur_state = TAP_TLR; int jtag_trst = 0; int jtag_srst = 0; jtag_command_t *jtag_command_queue = NULL; jtag_command_t **last_comand_pointer = &jtag_command_queue; jtag_device_t *jtag_devices = NULL; int jtag_num_devices = 0; int jtag_ir_scan_size = 0; enum reset_types jtag_reset_config = RESET_NONE; enum tap_state cmd_queue_end_state = TAP_TLR; enum tap_state cmd_queue_cur_state = TAP_TLR; int jtag_verify_capture_ir = 1; /* how long the OpenOCD should wait before attempting JTAG communication after reset lines deasserted (in ms) */ int jtag_nsrst_delay = 0; /* default to no nSRST delay */ int jtag_ntrst_delay = 0; /* default to no nTRST delay */ /* maximum number of JTAG devices expected in the chain */ #define JTAG_MAX_CHAIN_SIZE 20 /* callbacks to inform high-level handlers about JTAG state changes */ jtag_event_callback_t *jtag_event_callbacks; /* jtag interfaces (parport, FTDI-USB, TI-USB, ...) */ #if BUILD_PARPORT == 1 extern jtag_interface_t parport_interface; #endif #if BUILD_FT2232_FTD2XX == 1 extern jtag_interface_t ft2232_interface; #endif #if BUILD_FT2232_LIBFTDI == 1 extern jtag_interface_t ft2232_interface; #endif #if BUILD_AMTJTAGACCEL == 1 extern jtag_interface_t amt_jtagaccel_interface; #endif #if BUILD_EP93XX == 1 extern jtag_interface_t ep93xx_interface; #endif #if BUILD_AT91RM9200 == 1 extern jtag_interface_t at91rm9200_interface; #endif #if BUILD_GW16012 == 1 extern jtag_interface_t gw16012_interface; #endif #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1 extern jtag_interface_t presto_interface; #endif #if BUILD_USBPROG == 1 extern jtag_interface_t usbprog_interface; #endif jtag_interface_t *jtag_interfaces[] = { #if BUILD_PARPORT == 1 &parport_interface, #endif #if BUILD_FT2232_FTD2XX == 1 &ft2232_interface, #endif #if BUILD_FT2232_LIBFTDI == 1 &ft2232_interface, #endif #if BUILD_AMTJTAGACCEL == 1 &amt_jtagaccel_interface, #endif #if BUILD_EP93XX == 1 &ep93xx_interface, #endif #if BUILD_AT91RM9200 == 1 &at91rm9200_interface, #endif #if BUILD_GW16012 == 1 &gw16012_interface, #endif #if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1 &presto_interface, #endif #if BUILD_USBPROG == 1 &usbprog_interface, #endif NULL, }; jtag_interface_t *jtag = NULL; /* configuration */ char* jtag_interface = NULL; int jtag_speed = -1; /* forward declarations */ int jtag_add_statemove(enum tap_state endstate); int jtag_add_pathmove(int num_states, enum tap_state *path); int jtag_add_runtest(int num_cycles, enum tap_state endstate); int jtag_add_reset(int trst, int srst); int jtag_add_end_state(enum tap_state endstate); int jtag_add_sleep(u32 us); int jtag_execute_queue(void); int jtag_cancel_queue(void); /* jtag commands */ int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc); int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc); int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc); int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc); int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc); int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc); int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc); int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc); int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc); int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc); int handle_statemove_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc); int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc); int handle_drscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc); int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc); int jtag_register_event_callback(int (*callback)(enum jtag_event event, void *priv), void *priv) { jtag_event_callback_t **callbacks_p = &jtag_event_callbacks; if (callback == NULL) { return ERROR_INVALID_ARGUMENTS; } if (*callbacks_p) { while ((*callbacks_p)->next) callbacks_p = &((*callbacks_p)->next); callbacks_p = &((*callbacks_p)->next); } (*callbacks_p) = malloc(sizeof(jtag_event_callback_t)); (*callbacks_p)->callback = callback; (*callbacks_p)->priv = priv; (*callbacks_p)->next = NULL; return ERROR_OK; } int jtag_unregister_event_callback(int (*callback)(enum jtag_event event, void *priv)) { jtag_event_callback_t **callbacks_p = &jtag_event_callbacks; if (callback == NULL) { return ERROR_INVALID_ARGUMENTS; } while (*callbacks_p) { jtag_event_callback_t **next = &((*callbacks_p)->next); if ((*callbacks_p)->callback == callback) { free(*callbacks_p); *callbacks_p = *next; } callbacks_p = next; } return ERROR_OK; } int jtag_call_event_callbacks(enum jtag_event event) { jtag_event_callback_t *callback = jtag_event_callbacks; DEBUG("jtag event: %s", jtag_event_strings[event]); while (callback) { callback->callback(event, callback->priv); callback = callback->next; } return ERROR_OK; } /* returns a pointer to the pointer of the last command in queue * this may be a pointer to the root pointer (jtag_command_queue) * or to the next member of the last but one command */ jtag_command_t** jtag_get_last_command_p(void) { /* jtag_command_t *cmd = jtag_command_queue; if (cmd) while (cmd->next) cmd = cmd->next; else return &jtag_command_queue; return &cmd->next;*/ return last_comand_pointer; } /* returns a pointer to the n-th device in the scan chain */ jtag_device_t* jtag_get_device(int num) { jtag_device_t *device = jtag_devices; int i = 0; while (device) { if (num == i) return device; device = device->next; i++; } ERROR("jtag device number %d not defined", num); exit(-1); } void* cmd_queue_alloc(size_t size) { cmd_queue_page_t **p_page = &cmd_queue_pages; int offset; if (*p_page) { while ((*p_page)->next) p_page = &((*p_page)->next); if (CMD_QUEUE_PAGE_SIZE - (*p_page)->used < size) p_page = &((*p_page)->next); } if (!*p_page) { *p_page = malloc(sizeof(cmd_queue_page_t)); (*p_page)->used = 0; (*p_page)->address = malloc(CMD_QUEUE_PAGE_SIZE); (*p_page)->next = NULL; } offset = (*p_page)->used; (*p_page)->used += size; u8 *t=(u8 *)((*p_page)->address); return t + offset; } void cmd_queue_free() { cmd_queue_page_t *page = cmd_queue_pages; while (page) { cmd_queue_page_t *last = page; free(page->address); page = page->next; free(last); } cmd_queue_pages = NULL; } int jtag_add_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state, void *dummy_anachronism) { jtag_command_t **last_cmd; jtag_device_t *device; int i, j; int scan_size = 0; if (jtag_trst == 1) { WARNING("JTAG command queued, while TRST is low (TAP in reset)"); return ERROR_JTAG_TRST_ASSERTED; } last_cmd = jtag_get_last_command_p(); /* allocate memory for a new list member */ *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t)); (*last_cmd)->next = NULL; last_comand_pointer = &((*last_cmd)->next); (*last_cmd)->type = JTAG_SCAN; /* allocate memory for ir scan command */ (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t)); (*last_cmd)->cmd.scan->ir_scan = 1; (*last_cmd)->cmd.scan->num_fields = jtag_num_devices; /* one field per device */ (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(jtag_num_devices * sizeof(scan_field_t)); (*last_cmd)->cmd.scan->end_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); cmd_queue_cur_state = cmd_queue_end_state; for (i = 0; i < jtag_num_devices; i++) { int found = 0; device = jtag_get_device(i); scan_size = device->ir_length; (*last_cmd)->cmd.scan->fields[i].device = i; (*last_cmd)->cmd.scan->fields[i].num_bits = scan_size; (*last_cmd)->cmd.scan->fields[i].in_value = NULL; (*last_cmd)->cmd.scan->fields[i].in_handler = NULL; /* disable verification by default */ /* search the list */ for (j = 0; j < num_fields; j++) { if (i == fields[j].device) { found = 1; (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[j].out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size); (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[j].out_mask, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size); if (jtag_verify_capture_ir) { if (fields[j].in_handler==NULL) { jtag_set_check_value((*last_cmd)->cmd.scan->fields+i, device->expected, device->expected_mask, NULL); } else { (*last_cmd)->cmd.scan->fields[i].in_handler = fields[j].in_handler; (*last_cmd)->cmd.scan->fields[i].in_handler_priv = fields[j].in_handler_priv; (*last_cmd)->cmd.scan->fields[i].in_check_value = device->expected; (*last_cmd)->cmd.scan->fields[i].in_check_mask = device->expected_mask; } } device->bypass = 0; break; } } if (!found) { /* if a device isn't listed, set it to BYPASS */ (*last_cmd)->cmd.scan->fields[i].out_value = buf_set_ones(cmd_queue_alloc(CEIL(scan_size, 8)), scan_size); (*last_cmd)->cmd.scan->fields[i].out_mask = NULL; device->bypass = 1; } /* update device information */ buf_cpy((*last_cmd)->cmd.scan->fields[i].out_value, jtag_get_device(i)->cur_instr, scan_size); } return ERROR_OK; } int jtag_add_plain_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state, void *dummy_anachronism) { jtag_command_t **last_cmd; int i; if (jtag_trst == 1) { WARNING("JTAG command queued, while TRST is low (TAP in reset)"); return ERROR_JTAG_TRST_ASSERTED; } last_cmd = jtag_get_last_command_p(); /* allocate memory for a new list member */ *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t)); (*last_cmd)->next = NULL; last_comand_pointer = &((*last_cmd)->next); (*last_cmd)->type = JTAG_SCAN; /* allocate memory for ir scan command */ (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t)); (*last_cmd)->cmd.scan->ir_scan = 1; (*last_cmd)->cmd.scan->num_fields = num_fields; (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(num_fields * sizeof(scan_field_t)); (*last_cmd)->cmd.scan->end_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); cmd_queue_cur_state = cmd_queue_end_state; for (i = 0; i < num_fields; i++) { int num_bits = fields[i].num_bits; int num_bytes = CEIL(fields[i].num_bits, 8); (*last_cmd)->cmd.scan->fields[i].device = fields[i].device; (*last_cmd)->cmd.scan->fields[i].num_bits = num_bits; (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[i].out_value, cmd_queue_alloc(num_bytes), num_bits); (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[i].out_mask, cmd_queue_alloc(num_bytes), num_bits); (*last_cmd)->cmd.scan->fields[i].in_value = fields[i].in_value; (*last_cmd)->cmd.scan->fields[i].in_check_value = fields[i].in_check_value; (*last_cmd)->cmd.scan->fields[i].in_check_mask = fields[i].in_check_mask; (*last_cmd)->cmd.scan->fields[i].in_handler = NULL; (*last_cmd)->cmd.scan->fields[i].in_handler_priv = NULL; } return ERROR_OK; } int jtag_add_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state, void *dummy_anachronism) { int i, j; int bypass_devices = 0; int field_count = 0; jtag_command_t **last_cmd = jtag_get_last_command_p(); jtag_device_t *device = jtag_devices; int scan_size; if (jtag_trst == 1) { WARNING("JTAG command queued, while TRST is low (TAP in reset)"); return ERROR_JTAG_TRST_ASSERTED; } /* count devices in bypass */ while (device) { if (device->bypass) bypass_devices++; device = device->next; } /* allocate memory for a new list member */ *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t)); last_comand_pointer = &((*last_cmd)->next); (*last_cmd)->next = NULL; (*last_cmd)->type = JTAG_SCAN; /* allocate memory for dr scan command */ (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t)); (*last_cmd)->cmd.scan->ir_scan = 0; (*last_cmd)->cmd.scan->num_fields = num_fields + bypass_devices; (*last_cmd)->cmd.scan->fields = cmd_queue_alloc((num_fields + bypass_devices) * sizeof(scan_field_t)); (*last_cmd)->cmd.scan->end_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); cmd_queue_cur_state = cmd_queue_end_state; for (i = 0; i < jtag_num_devices; i++) { int found = 0; (*last_cmd)->cmd.scan->fields[field_count].device = i; for (j = 0; j < num_fields; j++) { if (i == fields[j].device) { found = 1; scan_size = fields[j].num_bits; (*last_cmd)->cmd.scan->fields[field_count].num_bits = scan_size; (*last_cmd)->cmd.scan->fields[field_count].out_value = buf_cpy(fields[j].out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size); (*last_cmd)->cmd.scan->fields[field_count].out_mask = buf_cpy(fields[j].out_mask, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size); (*last_cmd)->cmd.scan->fields[field_count].in_value = fields[j].in_value; (*last_cmd)->cmd.scan->fields[field_count].in_check_value = fields[j].in_check_value; (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = fields[j].in_check_mask; (*last_cmd)->cmd.scan->fields[field_count].in_handler = fields[j].in_handler; (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = fields[j].in_handler_priv; } } if (!found) { /* 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); } /* 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; (*last_cmd)->cmd.scan->fields[field_count].out_mask = NULL; (*last_cmd)->cmd.scan->fields[field_count].in_value = NULL; (*last_cmd)->cmd.scan->fields[field_count].in_check_value = NULL; (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = NULL; (*last_cmd)->cmd.scan->fields[field_count].in_handler = NULL; (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = NULL; } else { /* 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"); } } } return ERROR_OK; } int jtag_add_plain_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state, void *dummy_anachronism) { int i; jtag_command_t **last_cmd = jtag_get_last_command_p(); if (jtag_trst == 1) { WARNING("JTAG command queued, while TRST is low (TAP in reset)"); return ERROR_JTAG_TRST_ASSERTED; } /* allocate memory for a new list member */ *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t)); last_comand_pointer = &((*last_cmd)->next); (*last_cmd)->next = NULL; (*last_cmd)->type = JTAG_SCAN; /* allocate memory for scan command */ (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t)); (*last_cmd)->cmd.scan->ir_scan = 0; (*last_cmd)->cmd.scan->num_fields = num_fields; (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(num_fields * sizeof(scan_field_t)); (*last_cmd)->cmd.scan->end_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); cmd_queue_cur_state = cmd_queue_end_state; for (i = 0; i < num_fields; i++) { int num_bits = fields[i].num_bits; int num_bytes = CEIL(fields[i].num_bits, 8); (*last_cmd)->cmd.scan->fields[i].device = fields[i].device; (*last_cmd)->cmd.scan->fields[i].num_bits = num_bits; (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[i].out_value, cmd_queue_alloc(num_bytes), num_bits); (*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[i].out_mask, cmd_queue_alloc(num_bytes), num_bits); (*last_cmd)->cmd.scan->fields[i].in_value = fields[i].in_value; (*last_cmd)->cmd.scan->fields[i].in_check_value = fields[i].in_check_value; (*last_cmd)->cmd.scan->fields[i].in_check_mask = fields[i].in_check_mask; (*last_cmd)->cmd.scan->fields[i].in_handler = fields[i].in_handler; (*last_cmd)->cmd.scan->fields[i].in_handler_priv = fields[i].in_handler_priv; } return ERROR_OK; } int jtag_add_statemove(enum tap_state state) { jtag_command_t **last_cmd = jtag_get_last_command_p(); if (jtag_trst == 1) { WARNING("JTAG command queued, while TRST is low (TAP in reset)"); return ERROR_JTAG_TRST_ASSERTED; } /* allocate memory for a new list member */ *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t)); last_comand_pointer = &((*last_cmd)->next); (*last_cmd)->next = NULL; (*last_cmd)->type = JTAG_STATEMOVE; (*last_cmd)->cmd.statemove = cmd_queue_alloc(sizeof(statemove_command_t)); (*last_cmd)->cmd.statemove->end_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); cmd_queue_cur_state = cmd_queue_end_state; return ERROR_OK; } int jtag_add_pathmove(int num_states, enum tap_state *path) { jtag_command_t **last_cmd = jtag_get_last_command_p(); int i; if (jtag_trst == 1) { WARNING("JTAG command queued, while TRST is low (TAP in reset)"); return ERROR_JTAG_TRST_ASSERTED; } /* the last state has to be a stable state */ if (tap_move_map[path[num_states - 1]] == -1) { ERROR("TAP path doesn't finish in a stable state"); return ERROR_JTAG_NOT_IMPLEMENTED; } /* allocate memory for a new list member */ *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t)); last_comand_pointer = &((*last_cmd)->next); (*last_cmd)->next = NULL; (*last_cmd)->type = JTAG_PATHMOVE; (*last_cmd)->cmd.pathmove = cmd_queue_alloc(sizeof(pathmove_command_t)); (*last_cmd)->cmd.pathmove->num_states = num_states; (*last_cmd)->cmd.pathmove->path = cmd_queue_alloc(sizeof(enum tap_state) * num_states); for (i = 0; i < num_states; i++) (*last_cmd)->cmd.pathmove->path[i] = path[i]; 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); cmd_queue_cur_state = path[num_states - 1]; return ERROR_OK; } int jtag_add_runtest(int num_cycles, enum tap_state state) { jtag_command_t **last_cmd = jtag_get_last_command_p(); if (jtag_trst == 1) { WARNING("JTAG command queued, while TRST is low (TAP in reset)"); return ERROR_JTAG_TRST_ASSERTED; } /* allocate memory for a new list member */ *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t)); (*last_cmd)->next = NULL; last_comand_pointer = &((*last_cmd)->next); (*last_cmd)->type = JTAG_RUNTEST; (*last_cmd)->cmd.runtest = cmd_queue_alloc(sizeof(runtest_command_t)); (*last_cmd)->cmd.runtest->num_cycles = num_cycles; (*last_cmd)->cmd.runtest->end_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); cmd_queue_cur_state = cmd_queue_end_state; return ERROR_OK; } int jtag_add_reset(int req_trst, int req_srst) { int trst_with_tms = 0; jtag_command_t **last_cmd = jtag_get_last_command_p(); if (req_trst == -1) req_trst = jtag_trst; if (req_srst == -1) req_srst = jtag_srst; /* Make sure that jtag_reset_config allows the requested reset */ /* if SRST pulls TRST, we can't fulfill srst == 1 with trst == 0 */ if (((jtag_reset_config & RESET_SRST_PULLS_TRST) && (req_srst == 1)) && (req_trst == 0)) return ERROR_JTAG_RESET_WOULD_ASSERT_TRST; /* if TRST pulls SRST, we reset with TAP T-L-R */ if (((jtag_reset_config & RESET_TRST_PULLS_SRST) && (req_trst == 1)) && (req_srst == 0)) { req_trst = 0; trst_with_tms = 1; } if (req_srst && !(jtag_reset_config & RESET_HAS_SRST)) { ERROR("requested nSRST assertion, but the current configuration doesn't support this"); return ERROR_JTAG_RESET_CANT_SRST; } if (req_trst && !(jtag_reset_config & RESET_HAS_TRST)) { req_trst = 0; trst_with_tms = 1; } /* allocate memory for a new list member */ *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t)); (*last_cmd)->next = NULL; last_comand_pointer = &((*last_cmd)->next); (*last_cmd)->type = JTAG_RESET; (*last_cmd)->cmd.reset = cmd_queue_alloc(sizeof(reset_command_t)); (*last_cmd)->cmd.reset->trst = req_trst; (*last_cmd)->cmd.reset->srst = req_srst; jtag_trst = req_trst; jtag_srst = req_srst; if (jtag_srst) { jtag_call_event_callbacks(JTAG_SRST_ASSERTED); } else { jtag_call_event_callbacks(JTAG_SRST_RELEASED); if (jtag_nsrst_delay) jtag_add_sleep(jtag_nsrst_delay * 1000); } if (trst_with_tms) { last_cmd = &((*last_cmd)->next); /* allocate memory for a new list member */ *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t)); (*last_cmd)->next = NULL; last_comand_pointer = &((*last_cmd)->next); (*last_cmd)->type = JTAG_STATEMOVE; (*last_cmd)->cmd.statemove = cmd_queue_alloc(sizeof(statemove_command_t)); (*last_cmd)->cmd.statemove->end_state = TAP_TLR; jtag_call_event_callbacks(JTAG_TRST_ASSERTED); cmd_queue_cur_state = TAP_TLR; cmd_queue_end_state = TAP_TLR; return ERROR_OK; } else { if (jtag_trst) { /* we just asserted nTRST, so we're now in Test-Logic-Reset, * and inform possible listeners about this */ cmd_queue_cur_state = TAP_TLR; jtag_call_event_callbacks(JTAG_TRST_ASSERTED); } else { /* 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 */ if (jtag_ntrst_delay) jtag_add_sleep(jtag_ntrst_delay * 1000); } } return ERROR_OK; } int jtag_add_end_state(enum tap_state state) { jtag_command_t **last_cmd = jtag_get_last_command_p(); /* allocate memory for a new list member */ *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t)); (*last_cmd)->next = NULL; last_comand_pointer = &((*last_cmd)->next); (*last_cmd)->type = JTAG_END_STATE; (*last_cmd)->cmd.end_state = cmd_queue_alloc(sizeof(end_state_command_t)); (*last_cmd)->cmd.end_state->end_state = state; if (state != -1) cmd_queue_end_state = state; return ERROR_OK; } int jtag_add_sleep(u32 us) { jtag_command_t **last_cmd = jtag_get_last_command_p(); /* allocate memory for a new list member */ *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t)); (*last_cmd)->next = NULL; last_comand_pointer = &((*last_cmd)->next); (*last_cmd)->type = JTAG_SLEEP; (*last_cmd)->cmd.sleep = cmd_queue_alloc(sizeof(sleep_command_t)); (*last_cmd)->cmd.sleep->us = us; return ERROR_OK; } int jtag_scan_size(scan_command_t *cmd) { int bit_count = 0; int i; /* count bits in scan command */ for (i = 0; i < cmd->num_fields; i++) { bit_count += cmd->fields[i].num_bits; } return bit_count; } int jtag_build_buffer(scan_command_t *cmd, u8 **buffer) { int bit_count = 0; int i; bit_count = jtag_scan_size(cmd); *buffer = malloc(CEIL(bit_count, 8)); bit_count = 0; for (i = 0; i < cmd->num_fields; i++) { if (cmd->fields[i].out_value) { #ifdef _DEBUG_JTAG_IO_ char* char_buf = buf_to_str(cmd->fields[i].out_value, (cmd->fields[i].num_bits > 64) ? 64 : cmd->fields[i].num_bits, 16); #endif buf_set_buf(cmd->fields[i].out_value, 0, *buffer, bit_count, cmd->fields[i].num_bits); #ifdef _DEBUG_JTAG_IO_ DEBUG("fields[%i].out_value: 0x%s", i, char_buf); free(char_buf); #endif } bit_count += cmd->fields[i].num_bits; } return bit_count; } int jtag_read_buffer(u8 *buffer, scan_command_t *cmd) { int i; int bit_count = 0; int retval; /* we return ERROR_OK, unless a check fails, or a handler reports a problem */ retval = ERROR_OK; for (i = 0; i < cmd->num_fields; i++) { /* if neither in_value nor in_handler * are specified we don't have to examine this field */ if (cmd->fields[i].in_value || cmd->fields[i].in_handler) { int num_bits = cmd->fields[i].num_bits; u8 *captured = buf_set_buf(buffer, bit_count, malloc(CEIL(num_bits, 8)), 0, num_bits); #ifdef _DEBUG_JTAG_IO_ char *char_buf; char_buf = buf_to_str(captured, (num_bits > 64) ? 64 : num_bits, 16); DEBUG("fields[%i].in_value: 0x%s", i, char_buf); free(char_buf); #endif if (cmd->fields[i].in_value) { buf_cpy(captured, cmd->fields[i].in_value, num_bits); if (cmd->fields[i].in_handler) { if (cmd->fields[i].in_handler(cmd->fields[i].in_value, cmd->fields[i].in_handler_priv, cmd->fields+i) != ERROR_OK) { WARNING("in_handler reported a failed check"); retval = ERROR_JTAG_QUEUE_FAILED; } } } /* no in_value specified, but a handler takes care of the scanned data */ if (cmd->fields[i].in_handler && (!cmd->fields[i].in_value)) { if (cmd->fields[i].in_handler(captured, cmd->fields[i].in_handler_priv, cmd->fields+i) != ERROR_OK) { /* We're going to call the error:handler later, but if the in_handler * reported an error we report this failure upstream */ WARNING("in_handler reported a failed check"); retval = ERROR_JTAG_QUEUE_FAILED; } } free(captured); } bit_count += cmd->fields[i].num_bits; } return retval; } int jtag_check_value(u8 *captured, void *priv, scan_field_t *field) { int retval = ERROR_OK; int num_bits = field->num_bits; int compare_failed = 0; if (field->in_check_mask) compare_failed = buf_cmp_mask(captured, field->in_check_value, field->in_check_mask, num_bits); else compare_failed = buf_cmp(captured, field->in_check_value, num_bits); if (compare_failed) { /* An error handler could have caught the failing check * only report a problem when there wasn't a handler, or if the handler * acknowledged the error */ if (compare_failed) { char *captured_char = buf_to_str(captured, (num_bits > 64) ? 64 : num_bits, 16); char *in_check_value_char = buf_to_str(field->in_check_value, (num_bits > 64) ? 64 : num_bits, 16); if (field->in_check_mask) { char *in_check_mask_char; in_check_mask_char = buf_to_str(field->in_check_mask, (num_bits > 64) ? 64 : num_bits, 16); WARNING("value captured during scan didn't pass the requested check: captured: 0x%s check_value: 0x%s check_mask: 0x%s", captured_char, in_check_value_char, in_check_mask_char); free(in_check_mask_char); } else { WARNING("value captured during scan didn't pass the requested check: captured: 0x%s check_value: 0x%s", captured_char, in_check_value_char); } free(captured_char); free(in_check_value_char); } } return retval; } /* set up checking of this field using the in_handler. The values passed in must be valid until after jtag_execute() has completed. */ void jtag_set_check_value(scan_field_t *field, u8 *value, u8 *mask, error_handler_t *in_error_handler) { if (value) field->in_handler = jtag_check_value; else field->in_handler = NULL; /* No check, e.g. embeddedice uses value==NULL to indicate no check */ field->in_handler_priv = NULL; /* this will be filled in at the invocation site to point to the field duplicate */ field->in_check_value = value; field->in_check_mask = mask; } enum scan_type jtag_scan_type(scan_command_t *cmd) { int i; int type = 0; for (i = 0; i < cmd->num_fields; i++) { if (cmd->fields[i].in_value || cmd->fields[i].in_handler) type |= SCAN_IN; if (cmd->fields[i].out_value) type |= SCAN_OUT; } return type; } int jtag_execute_queue(void) { int retval; retval = jtag->execute_queue(); cmd_queue_free(); jtag_command_queue = NULL; last_comand_pointer = &jtag_command_queue; return retval; } int jtag_cancel_queue(void) { cmd_queue_free(); jtag_command_queue = NULL; last_comand_pointer = &jtag_command_queue; return ERROR_OK; } int jtag_reset_callback(enum jtag_event event, void *priv) { jtag_device_t *device = priv; DEBUG("-"); if (event == JTAG_TRST_ASSERTED) { buf_set_ones(device->cur_instr, device->ir_length); device->bypass = 1; } return ERROR_OK; } void jtag_sleep(u32 us) { usleep(us); } /* Try to examine chain layout according to IEEE 1149.1 ยง12 */ int jtag_examine_chain() { jtag_device_t *device = jtag_devices; scan_field_t field; u8 idcode_buffer[JTAG_MAX_CHAIN_SIZE * 4]; int i; int bit_count; int device_count = 0; u8 zero_check = 0x0; u8 one_check = 0xff; field.device = 0; field.num_bits = sizeof(idcode_buffer) * 8; field.out_value = idcode_buffer; field.out_mask = NULL; field.in_value = idcode_buffer; field.in_check_value = NULL; field.in_check_mask = NULL; field.in_handler = NULL; field.in_handler_priv = NULL; for (i = 0; i < JTAG_MAX_CHAIN_SIZE; i++) { buf_set_u32(idcode_buffer, i * 32, 32, 0x000000FF); } jtag_add_plain_dr_scan(1, &field, TAP_TLR, NULL); jtag_execute_queue(); for (i = 0; i < JTAG_MAX_CHAIN_SIZE * 4; i++) { zero_check |= idcode_buffer[i]; one_check &= idcode_buffer[i]; } /* if there wasn't a single non-zero bit or if all bits were one, the scan isn't valid */ if ((zero_check == 0x00) || (one_check == 0xff)) { ERROR("JTAG communication failure, check connection, JTAG interface, target power etc."); return ERROR_JTAG_INIT_FAILED; } for (bit_count = 0; bit_count < (JTAG_MAX_CHAIN_SIZE * 32) - 31;) { u32 idcode = buf_get_u32(idcode_buffer, bit_count, 32); if ((idcode & 1) == 0) { /* LSB must not be 0, this indicates a device in bypass */ device_count++; bit_count += 1; } else { u32 manufacturer; u32 part; u32 version; if (idcode == 0x000000FF) { /* End of chain (invalid manufacturer ID) */ break; } if (device) { device->idcode = idcode; device = device->next; } device_count++; manufacturer = (idcode & 0xffe) >> 1; part = (idcode & 0xffff000) >> 12; version = (idcode & 0xf0000000) >> 28; INFO("JTAG device found: 0x%8.8x (Manufacturer: 0x%3.3x, Part: 0x%4.4x, Version: 0x%1.1x)", idcode, manufacturer, part, version); bit_count += 32; } } /* see if number of discovered devices matches configuration */ if (device_count != jtag_num_devices) { ERROR("number of discovered devices in JTAG chain (%i) doesn't match configuration (%i)", device_count, jtag_num_devices); ERROR("check the config file and ensure proper JTAG communication (connections, speed, ...)"); return ERROR_JTAG_INIT_FAILED; } return ERROR_OK; } int jtag_validate_chain() { jtag_device_t *device = jtag_devices; int total_ir_length = 0; u8 *ir_test = NULL; scan_field_t field; int chain_pos = 0; while (device) { total_ir_length += device->ir_length; device = device->next; } total_ir_length += 2; ir_test = malloc(CEIL(total_ir_length, 8)); buf_set_ones(ir_test, total_ir_length); field.device = 0; field.num_bits = total_ir_length; field.out_value = ir_test; field.out_mask = NULL; field.in_value = ir_test; field.in_check_value = NULL; field.in_check_mask = NULL; field.in_handler = NULL; field.in_handler_priv = NULL; jtag_add_plain_ir_scan(1, &field, TAP_TLR, NULL); jtag_execute_queue(); device = jtag_devices; while (device) { if (buf_get_u32(ir_test, chain_pos, 2) != 0x1) { char *cbuf = buf_to_str(ir_test, total_ir_length, 16); ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf); free(cbuf); free(ir_test); return ERROR_JTAG_INIT_FAILED; } chain_pos += device->ir_length; device = device->next; } if (buf_get_u32(ir_test, chain_pos, 2) != 0x3) { char *cbuf = buf_to_str(ir_test, total_ir_length, 16); ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf); free(cbuf); free(ir_test); return ERROR_JTAG_INIT_FAILED; } free(ir_test); return ERROR_OK; } int jtag_register_commands(struct command_context_s *cmd_ctx) { register_command(cmd_ctx, NULL, "interface", handle_interface_command, COMMAND_CONFIG, NULL); register_command(cmd_ctx, NULL, "jtag_speed", handle_jtag_speed_command, COMMAND_ANY, "set jtag speed (if supported) "); register_command(cmd_ctx, NULL, "jtag_device", handle_jtag_device_command, COMMAND_CONFIG, NULL); register_command(cmd_ctx, NULL, "reset_config", handle_reset_config_command, COMMAND_CONFIG, NULL); register_command(cmd_ctx, NULL, "jtag_nsrst_delay", handle_jtag_nsrst_delay_command, COMMAND_CONFIG, NULL); register_command(cmd_ctx, NULL, "jtag_ntrst_delay", handle_jtag_ntrst_delay_command, COMMAND_CONFIG, NULL); register_command(cmd_ctx, NULL, "scan_chain", handle_scan_chain_command, COMMAND_EXEC, "print current scan chain configuration"); register_command(cmd_ctx, NULL, "endstate", handle_endstate_command, COMMAND_EXEC, "finish JTAG operations in "); register_command(cmd_ctx, NULL, "jtag_reset", handle_jtag_reset_command, COMMAND_EXEC, "toggle reset lines "); register_command(cmd_ctx, NULL, "runtest", handle_runtest_command, COMMAND_EXEC, "move to Run-Test/Idle, and execute "); register_command(cmd_ctx, NULL, "statemove", handle_statemove_command, COMMAND_EXEC, "move to current endstate or [tap_state]"); register_command(cmd_ctx, NULL, "irscan", handle_irscan_command, COMMAND_EXEC, "execute IR scan [dev2] [instr2] ..."); register_command(cmd_ctx, NULL, "drscan", handle_drscan_command, COMMAND_EXEC, "execute DR scan [dev2] [var2] ..."); register_command(cmd_ctx, NULL, "verify_ircapture", handle_verify_ircapture_command, COMMAND_ANY, "verify value captured during Capture-IR "); return ERROR_OK; } int jtag_init(struct command_context_s *cmd_ctx) { int i, validate_tries = 0; DEBUG("-"); if (jtag_speed == -1) jtag_speed = 0; if (jtag_interface && (jtag_interface[0] != 0)) /* configuration var 'jtag_interface' is set, and not empty */ for (i = 0; jtag_interfaces[i]; i++) { if (strcmp(jtag_interface, jtag_interfaces[i]->name) == 0) { jtag_device_t *device; device = jtag_devices; if (jtag_interfaces[i]->init() != ERROR_OK) return ERROR_JTAG_INIT_FAILED; jtag = jtag_interfaces[i]; jtag_ir_scan_size = 0; jtag_num_devices = 0; while (device != NULL) { jtag_ir_scan_size += device->ir_length; jtag_num_devices++; device = device->next; } jtag_add_statemove(TAP_TLR); jtag_execute_queue(); /* examine chain first, as this could discover the real chain layout */ if (jtag_examine_chain() != ERROR_OK) { ERROR("trying to validate configured JTAG chain anyway..."); } while (jtag_validate_chain() != ERROR_OK) { validate_tries++; if (validate_tries > 5) { ERROR("Could not validate JTAG chain, exit"); jtag = NULL; return ERROR_JTAG_INVALID_INTERFACE; } usleep(10000); } return ERROR_OK; } } /* no valid interface was found (i.e. the configuration option, * didn't match one of the compiled-in interfaces */ ERROR("No valid jtag interface found (%s)", jtag_interface); ERROR("compiled-in jtag interfaces:"); for (i = 0; jtag_interfaces[i]; i++) { ERROR("%i: %s", i, jtag_interfaces[i]->name); } jtag = NULL; return ERROR_JTAG_INVALID_INTERFACE; } int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) { int i; /* only if the configuration var isn't overwritten from cmdline */ if (!jtag_interface) { if (args[0] && (args[0][0] != 0)) { for (i=0; jtag_interfaces[i]; i++) { if (strcmp(args[0], jtag_interfaces[i]->name) == 0) { if (jtag_interfaces[i]->register_commands(cmd_ctx) != ERROR_OK) exit(-1); jtag_interface = jtag_interfaces[i]->name; return ERROR_OK; } } } /* remember the requested interface name, so we can complain about it later */ jtag_interface = strdup(args[0]); DEBUG("'interface' command didn't specify a valid interface"); } return ERROR_OK; } int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) { jtag_device_t **last_device_p = &jtag_devices; if (*last_device_p) { while ((*last_device_p)->next) last_device_p = &((*last_device_p)->next); last_device_p = &((*last_device_p)->next); } if (argc < 3) return ERROR_OK; *last_device_p = malloc(sizeof(jtag_device_t)); (*last_device_p)->ir_length = strtoul(args[0], NULL, 0); (*last_device_p)->expected = malloc((*last_device_p)->ir_length); buf_set_u32((*last_device_p)->expected, 0, (*last_device_p)->ir_length, strtoul(args[1], NULL, 0)); (*last_device_p)->expected_mask = malloc((*last_device_p)->ir_length); buf_set_u32((*last_device_p)->expected_mask, 0, (*last_device_p)->ir_length, strtoul(args[2], NULL, 0)); (*last_device_p)->cur_instr = malloc((*last_device_p)->ir_length); (*last_device_p)->bypass = 1; buf_set_ones((*last_device_p)->cur_instr, (*last_device_p)->ir_length); (*last_device_p)->next = NULL; jtag_register_event_callback(jtag_reset_callback, (*last_device_p)); jtag_num_devices++; return ERROR_OK; } int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) { jtag_device_t *device = jtag_devices; int device_count = 0; while (device) { u32 expected, expected_mask, cur_instr; expected = buf_get_u32(device->expected, 0, device->ir_length); expected_mask = buf_get_u32(device->expected_mask, 0, device->ir_length); cur_instr = buf_get_u32(device->cur_instr, 0, device->ir_length); command_print(cmd_ctx, "%i: idcode: 0x%8.8x ir length %i, ir capture 0x%x, ir mask 0x%x, current instruction 0x%x", device_count, device->idcode, device->ir_length, expected, expected_mask, cur_instr); device = device->next; device_count++; } return ERROR_OK; } int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) { if (argc >= 1) { if (strcmp(args[0], "none") == 0) jtag_reset_config = RESET_NONE; else if (strcmp(args[0], "trst_only") == 0) jtag_reset_config = RESET_HAS_TRST; else if (strcmp(args[0], "srst_only") == 0) jtag_reset_config = RESET_HAS_SRST; else if (strcmp(args[0], "trst_and_srst") == 0) jtag_reset_config = RESET_TRST_AND_SRST; else { ERROR("invalid reset_config argument, defaulting to none"); jtag_reset_config = RESET_NONE; return ERROR_INVALID_ARGUMENTS; } } if (argc >= 2) { if (strcmp(args[1], "srst_pulls_trst") == 0) jtag_reset_config |= RESET_SRST_PULLS_TRST; else if (strcmp(args[1], "trst_pulls_srst") == 0) jtag_reset_config |= RESET_TRST_PULLS_SRST; else if (strcmp(args[1], "combined") == 0) jtag_reset_config |= RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST; else if (strcmp(args[1], "separate") == 0) jtag_reset_config &= ~(RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST); else { ERROR("invalid reset_config argument, defaulting to none"); jtag_reset_config = RESET_NONE; return ERROR_INVALID_ARGUMENTS; } } if (argc >= 3) { if (strcmp(args[2], "trst_open_drain") == 0) jtag_reset_config |= RESET_TRST_OPEN_DRAIN; else if (strcmp(args[2], "trst_push_pull") == 0) jtag_reset_config &= ~RESET_TRST_OPEN_DRAIN; else { ERROR("invalid reset_config argument, defaulting to none"); jtag_reset_config = RESET_NONE; return ERROR_INVALID_ARGUMENTS; } } if (argc >= 4) { if (strcmp(args[3], "srst_push_pull") == 0) jtag_reset_config |= RESET_SRST_PUSH_PULL; else if (strcmp(args[3], "srst_open_drain") == 0) jtag_reset_config &= ~RESET_SRST_PUSH_PULL; else { ERROR("invalid reset_config argument, defaulting to none"); jtag_reset_config = RESET_NONE; return ERROR_INVALID_ARGUMENTS; } } return ERROR_OK; } int handle_jtag_nsrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) { if (argc < 1) { ERROR("jtag_nsrst_delay command takes one required argument"); exit(-1); } else { jtag_nsrst_delay = strtoul(args[0], NULL, 0); } return ERROR_OK; } int handle_jtag_ntrst_delay_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) { if (argc < 1) { ERROR("jtag_ntrst_delay command takes one required argument"); exit(-1); } else { jtag_ntrst_delay = strtoul(args[0], NULL, 0); } return ERROR_OK; } int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) { if (argc == 0) command_print(cmd_ctx, "jtag_speed: %i", jtag_speed); if (argc > 0) { /* this command can be called during CONFIG, * in which case jtag isn't initialized */ if (jtag) jtag->speed(strtoul(args[0], NULL, 0)); else jtag_speed = strtoul(args[0], NULL, 0); } return ERROR_OK; } int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) { enum tap_state state; if (argc < 1) { command_print(cmd_ctx, "usage: endstate "); } else { for (state = 0; state < 16; state++) { if (strcmp(args[0], tap_state_strings[state]) == 0) { jtag_add_end_state(state); jtag_execute_queue(); } } } command_print(cmd_ctx, "current endstate: %s", tap_state_strings[end_state]); return ERROR_OK; } int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) { int trst = -1; int srst = -1; char *usage = "usage: jtag_reset "; int retval; if (argc < 1) { command_print(cmd_ctx, usage); return ERROR_OK; } if (args[0][0] == '1') trst = 1; else if (args[0][0] == '0') trst = 0; else { command_print(cmd_ctx, usage); return ERROR_OK; } if (args[1][0] == '1') srst = 1; else if (args[1][0] == '0') srst = 0; else { command_print(cmd_ctx, usage); return ERROR_OK; } if ((retval = jtag_add_reset(trst, srst)) != ERROR_OK) { switch (retval) { 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_execute_queue(); return ERROR_OK; } int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) { if (argc < 1) { command_print(cmd_ctx, "usage: runtest "); return ERROR_OK; } jtag_add_runtest(strtol(args[0], NULL, 0), -1); jtag_execute_queue(); return ERROR_OK; } int handle_statemove_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) { enum tap_state state; state = -1; if (argc == 1) { for (state = 0; state < 16; state++) { if (strcmp(args[0], tap_state_strings[state]) == 0) { break; } } } jtag_add_statemove(state); jtag_execute_queue(); return ERROR_OK; } int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) { int i; scan_field_t *fields; if ((argc < 2) || (argc % 2)) { command_print(cmd_ctx, "usage: irscan [dev2] [instr2] ..."); return ERROR_OK; } fields = malloc(sizeof(scan_field_t) * argc / 2); for (i = 0; i < argc / 2; i++) { int device = strtoul(args[i*2], NULL, 0); int field_size = jtag_get_device(device)->ir_length; fields[i].device = device; fields[i].out_value = malloc(CEIL(field_size, 8)); buf_set_u32(fields[i].out_value, 0, field_size, strtoul(args[i*2+1], NULL, 0)); fields[i].out_mask = NULL; fields[i].in_value = NULL; fields[i].in_check_mask = NULL; fields[i].in_handler = NULL; fields[i].in_handler_priv = NULL; } jtag_add_ir_scan(argc / 2, fields, -1, NULL); jtag_execute_queue(); for (i = 0; i < argc / 2; i++) free(fields[i].out_value); free (fields); return ERROR_OK; } int handle_drscan_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) { scan_field_t *fields; int num_fields = 0; int field_count = 0; var_t *var; int i, j; if ((argc < 2) || (argc % 2)) { command_print(cmd_ctx, "usage: drscan [dev2] [var2]"); return ERROR_OK; } for (i = 0; i < argc; i+=2) { var = get_var_by_namenum(args[i+1]); if (var) { num_fields += var->num_fields; } else { command_print(cmd_ctx, "variable %s doesn't exist", args[i+1]); return ERROR_OK; } } fields = malloc(sizeof(scan_field_t) * num_fields); for (i = 0; i < argc; i+=2) { var = get_var_by_namenum(args[i+1]); for (j = 0; j < var->num_fields; j++) { fields[field_count].device = strtol(args[i], NULL, 0); fields[field_count].num_bits = var->fields[j].num_bits; fields[field_count].out_value = malloc(CEIL(var->fields[j].num_bits, 8)); buf_set_u32(fields[field_count].out_value, 0, var->fields[j].num_bits, var->fields[j].value); fields[field_count].out_mask = NULL; fields[field_count].in_value = fields[field_count].out_value; fields[field_count].in_check_mask = NULL; fields[field_count].in_check_value = NULL; fields[field_count].in_handler = field_le_to_host; fields[field_count++].in_handler_priv = &(var->fields[j]); } } jtag_add_dr_scan(num_fields, fields, -1, NULL); jtag_execute_queue(); for (i = 0; i < argc / 2; i++) free(fields[i].out_value); free(fields); return ERROR_OK; } int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) { if (argc == 0) { command_print(cmd_ctx, "verify Capture-IR is %s", (jtag_verify_capture_ir) ? "enabled": "disabled"); return ERROR_OK; } if (strcmp(args[0], "enable") == 0) { jtag_verify_capture_ir = 1; } else if (strcmp(args[0], "disable") == 0) { jtag_verify_capture_ir = 0; } return ERROR_OK; } 337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 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