X-Git-Url: https://review.openocd.org/gitweb?p=openocd.git;a=blobdiff_plain;f=src%2Fjtag%2Fjtag.c;h=e9802e17266fda05f55bb19da067d1f781201e4b;hp=e306b0a27bd33ffff11106e632e454ce754b024d;hb=076017341dd0428bb6e2c1bf5953851d91c098dd;hpb=8b4e882a1630d63bbc9840fa3f968e36b6ac3702 diff --git a/src/jtag/jtag.c b/src/jtag/jtag.c index e306b0a27b..e9802e1726 100644 --- a/src/jtag/jtag.c +++ b/src/jtag/jtag.c @@ -17,7 +17,12 @@ * 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" @@ -28,6 +33,18 @@ #include "string.h" #include +#ifndef MINIDRIVER +/* this allows JTAG devices to implement the entire jtag_xxx() layer in hw/sw */ +#define MINIDRIVER(a) a +#endif + + +/* note that this is not marked as static as it must be available from outside jtag.c for those + that implement the jtag_xxx() minidriver layer +*/ +int jtag_error=ERROR_OK; + + char* tap_state_strings[16] = { "tlr", @@ -53,6 +70,8 @@ static cmd_queue_page_t *cmd_queue_pages = NULL; * 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] = { @@ -90,6 +109,14 @@ tap_transition_t tap_transitions[16] = {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; @@ -106,6 +133,14 @@ 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; @@ -115,12 +150,12 @@ jtag_event_callback_t *jtag_event_callbacks; extern jtag_interface_t parport_interface; #endif -#if BUILD_FTDI2232 == 1 - extern jtag_interface_t ftdi2232_interface; +#if BUILD_FT2232_FTD2XX == 1 + extern jtag_interface_t ft2232_interface; #endif -#if BUILD_FTD2XX == 1 - extern jtag_interface_t ftd2xx_interface; +#if BUILD_FT2232_LIBFTDI == 1 + extern jtag_interface_t ft2232_interface; #endif #if BUILD_AMTJTAGACCEL == 1 @@ -131,21 +166,49 @@ jtag_event_callback_t *jtag_event_callbacks; 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_FTDI2232 == 1 - &ftdi2232_interface, +#if BUILD_FT2232_FTD2XX == 1 + &ft2232_interface, #endif -#if BUILD_FTD2XX == 1 - &ftd2xx_interface, +#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, }; @@ -153,16 +216,27 @@ jtag_interface_t *jtag_interfaces[] = { jtag_interface_t *jtag = NULL; /* configuration */ -char* jtag_interface = NULL; -int jtag_speed = -1; +jtag_interface_t *jtag_interface = NULL; +int jtag_speed = 0; + /* 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); @@ -226,7 +300,7 @@ int jtag_call_event_callbacks(enum jtag_event event) { jtag_event_callback_t *callback = jtag_event_callbacks; - DEBUG("jtag event: %i", event); + DEBUG("jtag event: %s", jtag_event_strings[event]); while (callback) { @@ -269,8 +343,9 @@ jtag_device_t* jtag_get_device(int num) device = device->next; i++; } - - return NULL; + + ERROR("jtag device number %d not defined", num); + exit(-1); } void* cmd_queue_alloc(size_t size) @@ -297,7 +372,8 @@ void* cmd_queue_alloc(size_t size) offset = (*p_page)->used; (*p_page)->used += size; - return ((*p_page)->address) + offset; + u8 *t=(u8 *)((*p_page)->address); + return t + offset; } void cmd_queue_free() @@ -317,38 +393,38 @@ void cmd_queue_free() int jtag_add_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state) { - jtag_command_t **last_cmd; - jtag_device_t *device; - int i, j; - int scan_size = 0; - /* int changed = 0; */ - if (jtag_trst == 1) { WARNING("JTAG command queued, while TRST is low (TAP in reset)"); + jtag_error=ERROR_JTAG_TRST_ASSERTED; return ERROR_JTAG_TRST_ASSERTED; } - /* - for (i=0; icur_instr, fields[i].out_value, device->ir_length)) - changed = 1; - } - else - { - ERROR("inexistant device specified for ir scan"); - return ERROR_INVALID_ARGUMENTS; - } - } + if (state != -1) + cmd_queue_end_state = state; - if (!changed) - return ERROR_OK; - */ + 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; + int retval=interface_jtag_add_ir_scan(num_fields, fields, state); + if (retval!=ERROR_OK) + jtag_error=retval; + return retval; +} + +int MINIDRIVER(interface_jtag_add_ir_scan)(int num_fields, scan_field_t *fields, enum tap_state state) +{ + jtag_command_t **last_cmd; + jtag_device_t *device; + int i, j; + int scan_size = 0; + + last_cmd = jtag_get_last_command_p(); /* allocate memory for a new list member */ @@ -363,19 +439,8 @@ int jtag_add_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state) (*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++) + for (i = 0; i < jtag_num_devices; i++) { int found = 0; device = jtag_get_device(i); @@ -383,27 +448,30 @@ int jtag_add_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state) (*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; - if (jtag_verify_capture_ir) - { - (*last_cmd)->cmd.scan->fields[i].in_check_value = buf_cpy(device->expected, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size); - (*last_cmd)->cmd.scan->fields[i].in_check_mask = buf_cpy(device->expected_mask, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size); - } - else - { - (*last_cmd)->cmd.scan->fields[i].in_check_value = NULL; - (*last_cmd)->cmd.scan->fields[i].in_check_mask = NULL; - } - (*last_cmd)->cmd.scan->fields[i].in_handler = NULL; - (*last_cmd)->cmd.scan->fields[i].in_handler_priv = NULL; + (*last_cmd)->cmd.scan->fields[i].in_handler = NULL; /* disable verification by default */ /* search the list */ - for (j=0; j < num_fields; j++) + 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; @@ -428,15 +496,31 @@ int jtag_add_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state) int jtag_add_plain_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state) { - 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; + return jtag_error=ERROR_JTAG_TRST_ASSERTED; } + 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 interface_jtag_add_plain_ir_scan(num_fields, fields, state); +} + +int MINIDRIVER(interface_jtag_add_plain_ir_scan)(int num_fields, scan_field_t *fields, enum tap_state state) +{ + int i; + jtag_command_t **last_cmd; + last_cmd = jtag_get_last_command_p(); /* allocate memory for a new list member */ @@ -452,17 +536,6 @@ int jtag_add_plain_ir_scan(int num_fields, scan_field_t *fields, enum tap_state (*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; @@ -472,8 +545,8 @@ int jtag_add_plain_ir_scan(int num_fields, scan_field_t *fields, enum tap_state (*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 = buf_cpy(fields[i].in_check_value, cmd_queue_alloc(num_bytes), num_bits); - (*last_cmd)->cmd.scan->fields[i].in_check_mask = buf_cpy(fields[i].in_check_mask, cmd_queue_alloc(num_bytes), num_bits); + (*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; } @@ -481,19 +554,36 @@ int jtag_add_plain_ir_scan(int num_fields, scan_field_t *fields, enum tap_state } int jtag_add_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state) +{ + if (jtag_trst == 1) + { + WARNING("JTAG command queued, while TRST is low (TAP in reset)"); + return jtag_error=ERROR_JTAG_TRST_ASSERTED; + } + + 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 interface_jtag_add_dr_scan(num_fields, fields, state); +} + +int MINIDRIVER(interface_jtag_add_dr_scan)(int num_fields, scan_field_t *fields, enum tap_state state) { 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; - } + jtag_command_t **last_cmd = jtag_get_last_command_p(); + jtag_device_t *device = jtag_devices; /* count devices in bypass */ while (device) @@ -515,24 +605,13 @@ int jtag_add_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state) (*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++) + 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++) + for (j = 0; j < num_fields; j++) { if (i == fields[j].device) { @@ -542,8 +621,8 @@ int jtag_add_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state) (*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 = buf_cpy(fields[j].in_check_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size); - (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = buf_cpy(fields[j].in_check_mask, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size); + (*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; } @@ -572,25 +651,41 @@ int jtag_add_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state) /* if a device is listed, the BYPASS register must not be selected */ if (jtag_get_device(i)->bypass) { - ERROR("BUG: scan data for a device in BYPASS"); - exit(-1); + 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) { - 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; + return jtag_error=ERROR_JTAG_TRST_ASSERTED; } + 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 interface_jtag_add_plain_dr_scan(num_fields, fields, state); +} + +int MINIDRIVER(interface_jtag_add_plain_dr_scan)(int num_fields, scan_field_t *fields, enum tap_state state) +{ + int i; + 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_comand_pointer = &((*last_cmd)->next); @@ -604,17 +699,6 @@ int jtag_add_plain_dr_scan(int num_fields, scan_field_t *fields, enum tap_state (*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; @@ -624,8 +708,8 @@ int jtag_add_plain_dr_scan(int num_fields, scan_field_t *fields, enum tap_state (*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 = buf_cpy(fields[i].in_check_value, cmd_queue_alloc(num_bytes), num_bits); - (*last_cmd)->cmd.scan->fields[i].in_check_mask = buf_cpy(fields[i].in_check_mask, cmd_queue_alloc(num_bytes), num_bits); + (*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; } @@ -634,23 +718,12 @@ int jtag_add_plain_dr_scan(int num_fields, scan_field_t *fields, enum tap_state } 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; + return jtag_error=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; @@ -661,75 +734,42 @@ int jtag_add_statemove(enum tap_state state) jtag_call_event_callbacks(JTAG_TRST_ASSERTED); cmd_queue_cur_state = cmd_queue_end_state; + + return interface_jtag_add_statemove(state); +} + +int MINIDRIVER(interface_jtag_add_statemove)(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_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; + 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; + return jtag_error=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; + return jtag_error=ERROR_JTAG_NOT_IMPLEMENTED; } - if (jtag->support_statemove) - { - /* 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_RUNTEST; - - (*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]; - } - else - { - /* validate the desired path, and see if it fits a default path */ - int begin = 0; - int end = 0; - int j; - - for (i = 0; i < num_states; i++) - { - for (j = i; j < num_states; j++) - { - if (tap_move_map[path[j]] != -1) - { - end = j; - break; - } - } - - if (begin - end <= 7) /* a default path spans no more than 7 states */ - { - jtag_add_statemove(path[end]); - } - else - { - ERROR("encountered a TAP path that can't be fulfilled by default paths"); - return ERROR_JTAG_NOT_IMPLEMENTED; - } - - i = end; - } - } - if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR) jtag_call_event_callbacks(JTAG_TRST_RELEASED); @@ -737,30 +777,58 @@ int jtag_add_pathmove(int num_states, enum tap_state *path) jtag_call_event_callbacks(JTAG_TRST_ASSERTED); cmd_queue_cur_state = path[num_states - 1]; - - return ERROR_OK; + + return interface_jtag_add_pathmove(num_states, path); } -int jtag_add_runtest(int num_cycles, enum tap_state state) + +int MINIDRIVER(interface_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; - } - /* 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)->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]; + + return ERROR_OK; +} + +int MINIDRIVER(interface_jtag_add_runtest)(int num_cycles, 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_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; + return ERROR_OK; +} + +int jtag_add_runtest(int num_cycles, enum tap_state state) +{ + if (jtag_trst == 1) + { + jtag_error=ERROR_JTAG_QUEUE_FAILED; + WARNING("JTAG command queued, while TRST is low (TAP in reset)"); + return ERROR_JTAG_TRST_ASSERTED; + } + if (state != -1) cmd_queue_end_state = state; @@ -772,14 +840,14 @@ int jtag_add_runtest(int num_cycles, enum tap_state state) cmd_queue_cur_state = cmd_queue_end_state; - return ERROR_OK; + /* executed by sw or hw fifo */ + return interface_jtag_add_runtest(num_cycles, state); } 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(); + int retval; if (req_trst == -1) req_trst = jtag_trst; @@ -790,7 +858,9 @@ int jtag_add_reset(int req_trst, int req_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; + { + return jtag_error=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)) @@ -800,64 +870,87 @@ int jtag_add_reset(int req_trst, int req_srst) } if (req_srst && !(jtag_reset_config & RESET_HAS_SRST)) - return ERROR_JTAG_RESET_CANT_SRST; + { + ERROR("requested nSRST assertion, but the current configuration doesn't support this"); + return jtag_error=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; + retval = interface_jtag_add_reset(req_trst, req_srst); + if (retval!=ERROR_OK) + { + jtag_error=retval; + return retval; + } + 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; + jtag_add_end_state(TAP_TLR); + jtag_add_statemove(TAP_TLR); return ERROR_OK; } + + 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 { - if (jtag_trst) - { - cmd_queue_cur_state = TAP_TLR; - jtag_call_event_callbacks(JTAG_TRST_ASSERTED); - } + /* 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 retval; + +} +int MINIDRIVER(interface_jtag_add_reset)(int req_trst, int req_srst) +{ + 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_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; + + return ERROR_OK; } -int jtag_add_end_state(enum tap_state state) +int MINIDRIVER(interface_jtag_add_end_state)(enum tap_state state) { jtag_command_t **last_cmd = jtag_get_last_command_p(); @@ -870,13 +963,18 @@ int jtag_add_end_state(enum tap_state state) (*last_cmd)->cmd.end_state = cmd_queue_alloc(sizeof(end_state_command_t)); (*last_cmd)->cmd.end_state->end_state = state; + return ERROR_OK; +} + +int jtag_add_end_state(enum tap_state state) +{ + int retval = interface_jtag_add_end_state(state); if (state != -1) cmd_queue_end_state = state; - - return ERROR_OK; + return retval; } -int jtag_add_sleep(u32 us) +int MINIDRIVER(interface_jtag_add_sleep)(u32 us) { jtag_command_t **last_cmd = jtag_get_last_command_p(); @@ -892,13 +990,18 @@ int jtag_add_sleep(u32 us) return ERROR_OK; } +int jtag_add_sleep(u32 us) +{ + return interface_jtag_add_sleep(us); +} + int jtag_scan_size(scan_command_t *cmd) { int bit_count = 0; int i; /* count bits in scan command */ - for (i=0; inum_fields; i++) + for (i = 0; i < cmd->num_fields; i++) { bit_count += cmd->fields[i].num_bits; } @@ -920,12 +1023,14 @@ int jtag_build_buffer(scan_command_t *cmd, u8 **buffer) { if (cmd->fields[i].out_value) { - char* char_buf = buf_to_char(cmd->fields[i].out_value, cmd->fields[i].num_bits); - 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: %s", i, char_buf); + 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; @@ -939,53 +1044,57 @@ int jtag_read_buffer(u8 *buffer, scan_command_t *cmd) { int i; int bit_count = 0; - int retval = ERROR_OK; - - for (i=0; i < cmd->num_fields; i++) + 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_check_value are specified we don't have to examine this field */ - if (cmd->fields[i].in_value || cmd->fields[i].in_check_value) + /* 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) { - char *char_buf; - buf_set_buf(buffer, bit_count, cmd->fields[i].in_value, 0, num_bits); - char_buf = buf_to_char(cmd->fields[i].in_value, num_bits); -#ifdef _DEBUG_JTAG_IO_ - DEBUG("fields[%i].in_value: %s", i, char_buf); -#endif - free(char_buf); + 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) != ERROR_OK) + if (cmd->fields[i].in_handler(cmd->fields[i].in_value, cmd->fields[i].in_handler_priv, cmd->fields+i) != ERROR_OK) { - /* TODO: error reporting */ WARNING("in_handler reported a failed check"); retval = ERROR_JTAG_QUEUE_FAILED; } } } - - if (cmd->fields[i].in_check_value) + + /* no in_value specified, but a handler takes care of the scanned data */ + if (cmd->fields[i].in_handler && (!cmd->fields[i].in_value)) { - u8 *captured = buf_set_buf(buffer, bit_count, malloc(CEIL(num_bits, 8)), 0, num_bits); - if ((cmd->fields[i].in_check_mask && buf_cmp_mask(captured, cmd->fields[i].in_check_value, cmd->fields[i].in_check_mask, num_bits)) - || (!cmd->fields[i].in_check_mask && buf_cmp(captured, cmd->fields[i].in_check_mask, num_bits))) + if (cmd->fields[i].in_handler(captured, cmd->fields[i].in_handler_priv, cmd->fields+i) != ERROR_OK) { - char *captured_char = buf_to_char(captured, num_bits); - char *in_check_value_char = buf_to_char(cmd->fields[i].in_check_value, num_bits); - char *in_check_mask_char = buf_to_char(cmd->fields[i].in_check_mask, num_bits); - /* TODO: error reporting */ - WARNING("value captured during scan didn't pass the requested check: captured: %s check_value: %s check_mask: %s", captured_char, in_check_value_char, in_check_mask_char); + /* 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_char); - free(in_check_value_char); - free(in_check_mask_char); } - free(captured); } + + free(captured); } bit_count += cmd->fields[i].num_bits; } @@ -993,14 +1102,74 @@ int jtag_read_buffer(u8 *buffer, scan_command_t *cmd) 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); + + retval = ERROR_JTAG_QUEUE_FAILED; + } + + } + 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++) + for (i = 0; i < cmd->num_fields; i++) { - if (cmd->fields[i].in_check_value || cmd->fields[i].in_value) + if (cmd->fields[i].in_value || cmd->fields[i].in_handler) type |= SCAN_IN; if (cmd->fields[i].out_value) type |= SCAN_OUT; @@ -1009,7 +1178,7 @@ enum scan_type jtag_scan_type(scan_command_t *cmd) return type; } -int jtag_execute_queue(void) +int MINIDRIVER(interface_jtag_execute_queue)(void) { int retval; @@ -1020,23 +1189,26 @@ int jtag_execute_queue(void) jtag_command_queue = NULL; last_comand_pointer = &jtag_command_queue; + jtag_error=ERROR_OK; + return retval; } -int jtag_cancel_queue(void) +int jtag_execute_queue(void) { - cmd_queue_free(); - jtag_command_queue = NULL; - last_comand_pointer = &jtag_command_queue; - - return ERROR_OK; + int retval=interface_jtag_execute_queue(); + if (retval!=ERROR_OK) + return retval; + retval=jtag_error; + jtag_error=ERROR_OK; + return retval; } int jtag_reset_callback(enum jtag_event event, void *priv) { jtag_device_t *device = priv; - DEBUG(""); + DEBUG("-"); if (event == JTAG_TRST_ASSERTED) { @@ -1052,6 +1224,102 @@ void jtag_sleep(u32 us) usleep(us); } +/* Try to examine chain layout according to IEEE 1149.1 §12 + */ +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); + 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; @@ -1088,8 +1356,11 @@ int jtag_validate_chain() { if (buf_get_u32(ir_test, chain_pos, 2) != 0x1) { - ERROR("Error validating JTAG scan chain, IR mismatch"); - exit(-1); + 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; @@ -1097,8 +1368,11 @@ int jtag_validate_chain() if (buf_get_u32(ir_test, chain_pos, 2) != 0x3) { - ERROR("Error validating JTAG scan chain, IR mismatch"); - exit(-1); + 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); @@ -1113,10 +1387,14 @@ int jtag_register_commands(struct command_context_s *cmd_ctx) 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); + COMMAND_CONFIG, "jtag_device "); 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"); @@ -1138,83 +1416,105 @@ int jtag_register_commands(struct command_context_s *cmd_ctx) return ERROR_OK; } +int jtag_interface_init(struct command_context_s *cmd_ctx) +{ + if (!jtag_interface) + { + /* nothing was previously specified by "interface" command */ + ERROR("JTAG interface has to be specified, see \"interface\" command"); + return ERROR_JTAG_INVALID_INTERFACE; + } + + if (jtag_interface->init() != ERROR_OK) + return ERROR_JTAG_INIT_FAILED; + + jtag = jtag_interface; + return ERROR_OK; +} + int jtag_init(struct command_context_s *cmd_ctx) { - int i; - - DEBUG(""); + int validate_tries = 0; + jtag_device_t *device; - if (jtag_speed == -1) - jtag_speed = 0; + DEBUG("-"); - 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 && jtag_interface_init(cmd_ctx) != ERROR_OK) + return ERROR_JTAG_INIT_FAILED; + + device = jtag_devices; + 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; + } - if (jtag_interfaces[i]->init() != ERROR_OK) - return ERROR_JTAG_INIT_FAILED; - jtag = jtag_interfaces[i]; + jtag_add_statemove(TAP_TLR); + jtag_execute_queue(); - 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(); - - jtag_validate_chain(); - - return ERROR_OK; - } - } + /* 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..."); + } - /* 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); - jtag = NULL; - return ERROR_JTAG_INVALID_INTERFACE; + while (jtag_validate_chain() != ERROR_OK) + { + validate_tries++; + if (validate_tries > 5) + { + ERROR("Could not validate JTAG chain, exit"); + return ERROR_JTAG_INVALID_INTERFACE; + } + usleep(10000); + } + + return ERROR_OK; } 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) + + /* check whether the interface is already configured */ + if (jtag_interface) { - if (args[0] && (args[0][0] != 0)) + WARNING("Interface already configured, ignoring"); + return ERROR_OK; + } + + /* interface name is a mandatory argument */ + if (argc < 1 || args[0][0] == '\0') + { + return ERROR_COMMAND_SYNTAX_ERROR; + } + + for (i=0; jtag_interfaces[i]; i++) + { + if (strcmp(args[0], jtag_interfaces[i]->name) == 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; - } - } + if (jtag_interfaces[i]->register_commands(cmd_ctx) != ERROR_OK) + exit(-1); + + jtag_interface = jtag_interfaces[i]; + 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; + + /* 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)", args[0]); + ERROR("compiled-in jtag interfaces:"); + for (i = 0; jtag_interfaces[i]; i++) + { + ERROR("%i: %s", i, jtag_interfaces[i]->name); + } + + return ERROR_JTAG_INVALID_INTERFACE; } int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) @@ -1285,8 +1585,9 @@ int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, ch jtag_reset_config = RESET_TRST_AND_SRST; else { - ERROR("invalid reset_config argument"); - exit(-1); + ERROR("invalid reset_config argument, defaulting to none"); + jtag_reset_config = RESET_NONE; + return ERROR_INVALID_ARGUMENTS; } } @@ -1302,8 +1603,9 @@ int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, ch jtag_reset_config &= ~(RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST); else { - ERROR("invalid reset_config argument"); - exit(-1); + ERROR("invalid reset_config argument, defaulting to none"); + jtag_reset_config = RESET_NONE; + return ERROR_INVALID_ARGUMENTS; } } @@ -1315,8 +1617,9 @@ int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, ch jtag_reset_config &= ~RESET_TRST_OPEN_DRAIN; else { - ERROR("invalid reset_config argument"); - exit(-1); + ERROR("invalid reset_config argument, defaulting to none"); + jtag_reset_config = RESET_NONE; + return ERROR_INVALID_ARGUMENTS; } } @@ -1328,14 +1631,45 @@ int handle_reset_config_command(struct command_context_s *cmd_ctx, char *cmd, ch jtag_reset_config &= ~RESET_SRST_PUSH_PULL; else { - ERROR("invalid reset_config argument"); - exit(-1); + 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) @@ -1360,18 +1694,20 @@ int handle_endstate_command(struct command_context_s *cmd_ctx, char *cmd, char * if (argc < 1) { - command_print(cmd_ctx, "usage: endstate "); - return ERROR_OK; + return ERROR_COMMAND_SYNTAX_ERROR; } - - for (state = 0; state < 16; state++) + else { - if (strcmp(args[0], tap_state_strings[state]) == 0) + for (state = 0; state < 16; state++) { - jtag_add_end_state(state); - jtag_execute_queue(); + 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; } @@ -1380,13 +1716,12 @@ int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char { int trst = -1; int srst = -1; - char *usage = "usage: jtag_reset "; int retval; - if (argc < 1) + if (argc < 2) { - command_print(cmd_ctx, usage); - return ERROR_OK; + return ERROR_COMMAND_SYNTAX_ERROR; + } if (args[0][0] == '1') @@ -1395,8 +1730,7 @@ int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char trst = 0; else { - command_print(cmd_ctx, usage); - return ERROR_OK; + return ERROR_COMMAND_SYNTAX_ERROR; } if (args[1][0] == '1') @@ -1405,10 +1739,12 @@ int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char srst = 0; else { - command_print(cmd_ctx, usage); - return ERROR_OK; + return ERROR_COMMAND_SYNTAX_ERROR; } + if (!jtag && jtag_interface_init(cmd_ctx) != ERROR_OK) + return ERROR_JTAG_INIT_FAILED; + if ((retval = jtag_add_reset(trst, srst)) != ERROR_OK) { switch (retval) @@ -1432,8 +1768,7 @@ int handle_runtest_command(struct command_context_s *cmd_ctx, char *cmd, char ** { if (argc < 1) { - command_print(cmd_ctx, "usage: runtest "); - return ERROR_OK; + return ERROR_COMMAND_SYNTAX_ERROR; } jtag_add_runtest(strtol(args[0], NULL, 0), -1); @@ -1473,8 +1808,7 @@ int handle_irscan_command(struct command_context_s *cmd_ctx, char *cmd, char **a if ((argc < 2) || (argc % 2)) { - command_print(cmd_ctx, "usage: irscan [dev2] [instr2] ..."); - return ERROR_OK; + return ERROR_COMMAND_SYNTAX_ERROR; } fields = malloc(sizeof(scan_field_t) * argc / 2); @@ -1514,8 +1848,7 @@ int handle_drscan_command(struct command_context_s *cmd_ctx, char *cmd, char **a if ((argc < 2) || (argc % 2)) { - command_print(cmd_ctx, "usage: drscan [dev2] [var2]"); - return ERROR_OK; + return ERROR_COMMAND_SYNTAX_ERROR; } for (i = 0; i < argc; i+=2) @@ -1564,22 +1897,64 @@ int handle_drscan_command(struct command_context_s *cmd_ctx, char *cmd, char **a return ERROR_OK; } -int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) + + +int MINIDRIVER(interface_jtag_add_shift)(const enum tap_state shift_state, const enum tap_state end_state, int num_bits, u32 value) { - if (argc == 0) - { - command_print(cmd_ctx, "verify Capture-IR is %s", (jtag_verify_capture_ir) ? "enabled": "disabled"); - return ERROR_OK; - } + u8 out_buf[4]; + buf_set_u32(out_buf, 0, 32, flip_u32(value, 32)); + + /* allocate memory for a new list member */ + jtag_command_t **last_cmd; + last_cmd = jtag_get_last_command_p(); + *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 = (shift_state==TAP_SI); + (*last_cmd)->cmd.scan->num_fields = 1; + (*last_cmd)->cmd.scan->fields = cmd_queue_alloc(1 * sizeof(scan_field_t)); + (*last_cmd)->cmd.scan->end_state = end_state; + + int num_bytes = CEIL(num_bits, 8); + int i=0; + (*last_cmd)->cmd.scan->fields[i].device = 0; /* not used by any drivers */ + (*last_cmd)->cmd.scan->fields[i].num_bits = num_bits; + (*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(out_buf, cmd_queue_alloc(num_bytes), num_bits); + (*last_cmd)->cmd.scan->fields[i].out_mask = NULL; + (*last_cmd)->cmd.scan->fields[i].in_value = NULL; + (*last_cmd)->cmd.scan->fields[i].in_check_value = NULL; + (*last_cmd)->cmd.scan->fields[i].in_check_mask = NULL; + (*last_cmd)->cmd.scan->fields[i].in_handler = NULL; + (*last_cmd)->cmd.scan->fields[i].in_handler_priv = NULL; - if (strcmp(args[0], "enable") == 0) + return ERROR_OK; +} + +int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) +{ + if (argc == 1) { - jtag_verify_capture_ir = 1; - } - else if (strcmp(args[0], "disable") == 0) + if (strcmp(args[0], "enable") == 0) + { + jtag_verify_capture_ir = 1; + } + else if (strcmp(args[0], "disable") == 0) + { + jtag_verify_capture_ir = 0; + } else + { + return ERROR_COMMAND_SYNTAX_ERROR; + } + } else if (argc != 0) { - jtag_verify_capture_ir = 0; + return ERROR_COMMAND_SYNTAX_ERROR; } + command_print(cmd_ctx, "verify Capture-IR is %s", (jtag_verify_capture_ir) ? "enabled": "disabled"); + return ERROR_OK; }