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riscv-openocd/src/jtag/jtag.c

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/***************************************************************************
* 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 <unistd.h>
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
*/
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 */
};
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 */
/* 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_FTDI2232 == 1
extern jtag_interface_t ftdi2232_interface;
#endif
#if BUILD_FTD2XX == 1
extern jtag_interface_t ftd2xx_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
jtag_interface_t *jtag_interfaces[] = {
#if BUILD_PARPORT == 1
&parport_interface,
#endif
#if BUILD_FTDI2232 == 1
&ftdi2232_interface,
#endif
#if BUILD_FTD2XX == 1
&ftd2xx_interface,
#endif
#if BUILD_AMTJTAGACCEL == 1
&amt_jtagaccel_interface,
#endif
#if BUILD_EP93XX == 1
&ep93xx_interface,
#endif
NULL,
};
jtag_interface_t *jtag = NULL;
/* configuration */
char* jtag_interface = NULL;
int jtag_speed = -1;
/* forward declarations */
/* 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: %i", 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++;
}
return NULL;
}
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;
return ((*p_page)->address) + 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)
{
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)");
return ERROR_JTAG_TRST_ASSERTED;
}
/*
for (i=0; i<num_fields; i++)
{
device = jtag_get_device(fields[i].device);
if (device)
{
if (buf_cmp(device->cur_instr, fields[i].out_value, device->ir_length))
changed = 1;
}
else
{
ERROR("inexistant device specified for ir scan");
return ERROR_INVALID_ARGUMENTS;
}
}
if (!changed)
return ERROR_OK;
*/
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;
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;
/* 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);
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)
{
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 = 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_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)
{
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 = 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_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)
{
ERROR("BUG: scan data for a device in BYPASS");
exit(-1);
}
}
}
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;
}
/* 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 = 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_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;
}
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);
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);
}
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);
}
}
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)
{
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);
#endif
free(char_buf);
}
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 = 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)
{
int num_bits = cmd->fields[i].num_bits;
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);
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)
{
/* TODO: error reporting */
WARNING("in_handler reported a failed check");
retval = ERROR_JTAG_QUEUE_FAILED;
}
}
}
if (cmd->fields[i].in_check_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)))
{
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);
retval = ERROR_JTAG_QUEUE_FAILED;
free(captured_char);
free(in_check_value_char);
free(in_check_mask_char);
}
free(captured);
}
}
bit_count += cmd->fields[i].num_bits;
}
return retval;
}
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_check_value || cmd->fields[i].in_value)
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);
}
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);
jtag_execute_queue();
device = jtag_devices;
while (device)
{
if (buf_get_u32(ir_test, chain_pos, 2) != 0x1)
{
ERROR("Error validating JTAG scan chain, IR mismatch");
exit(-1);
}
chain_pos += device->ir_length;
device = device->next;
}
if (buf_get_u32(ir_test, chain_pos, 2) != 0x3)
{
ERROR("Error validating JTAG scan chain, IR mismatch");
exit(-1);
}
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) <speed>");
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 <tap_state>");
register_command(cmd_ctx, NULL, "jtag_reset", handle_jtag_reset_command,
COMMAND_EXEC, "toggle reset lines <trst> <srst>");
register_command(cmd_ctx, NULL, "runtest", handle_runtest_command,
COMMAND_EXEC, "move to Run-Test/Idle, and execute <num_cycles>");
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 <device> <instr> [dev2] [instr2] ...");
register_command(cmd_ctx, NULL, "drscan", handle_drscan_command,
COMMAND_EXEC, "execute DR scan <device> <var> [dev2] [var2] ...");
register_command(cmd_ctx, NULL, "verify_ircapture", handle_verify_ircapture_command,
COMMAND_ANY, "verify value captured during Capture-IR <enable|disable>");
return ERROR_OK;
}
int jtag_init(struct command_context_s *cmd_ctx)
{
int i;
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();
jtag_validate_chain();
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);
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");
exit(-1);
}
}
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");
exit(-1);
}
}
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");
exit(-1);
}
}
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");
exit(-1);
}
}
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 <ms> 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 <ms> 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 <tap_state>");
return ERROR_OK;
}
for (state = 0; state < 16; state++)
{
if (strcmp(args[0], tap_state_strings[state]) == 0)
{
jtag_add_end_state(state);
jtag_execute_queue();
}
}
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 <trst> <srst>";
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 <num_cycles>");
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 <device> <instr> [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);
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 <device> <var> [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);
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;
}
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