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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>
/* 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",
"sds", "cd", "sd", "e1d", "pd", "e2d", "ud",
"rti",
"sis", "ci", "si", "e1i", "pi", "e2i", "ui"
};
typedef struct cmd_queue_page_s
{
void *address;
size_t used;
struct cmd_queue_page_s *next;
} cmd_queue_page_t;
#define CMD_QUEUE_PAGE_SIZE (1024 * 1024)
static cmd_queue_page_t *cmd_queue_pages = NULL;
/* tap_move[i][j]: tap movement command to go from state i to state j
* 0: Test-Logic-Reset
* 1: Run-Test/Idle
* 2: Shift-DR
* 3: Pause-DR
* 4: Shift-IR
* 5: Pause-IR
*
* SD->SD and SI->SI have to be caught in interface specific code
*/
u8 tap_move[6][6] =
{
/* TLR RTI SD PD SI PI */
{0x7f, 0x00, 0x17, 0x0a, 0x1b, 0x16}, /* TLR */
{0x7f, 0x00, 0x25, 0x05, 0x2b, 0x0b}, /* RTI */
{0x7f, 0x31, 0x00, 0x01, 0x0f, 0x2f}, /* SD */
{0x7f, 0x30, 0x20, 0x17, 0x1e, 0x2f}, /* PD */
{0x7f, 0x31, 0x07, 0x17, 0x00, 0x01}, /* SI */
{0x7f, 0x30, 0x1c, 0x17, 0x20, 0x2f} /* PI */
};
int tap_move_map[16] = {
0, -1, -1, 2, -1, 3, -1, -1,
1, -1, -1, 4, -1, 5, -1, -1
};
tap_transition_t tap_transitions[16] =
{
{TAP_TLR, TAP_RTI}, /* TLR */
{TAP_SIS, TAP_CD}, /* SDS */
{TAP_E1D, TAP_SD}, /* CD */
{TAP_E1D, TAP_SD}, /* SD */
{TAP_UD, TAP_PD}, /* E1D */
{TAP_E2D, TAP_PD}, /* PD */
{TAP_UD, TAP_SD}, /* E2D */
{TAP_SDS, TAP_RTI}, /* UD */
{TAP_SDS, TAP_RTI}, /* RTI */
{TAP_TLR, TAP_CI}, /* SIS */
{TAP_E1I, TAP_SI}, /* CI */
{TAP_E1I, TAP_SI}, /* SI */
{TAP_UI, TAP_PI}, /* E1I */
{TAP_E2I, TAP_PI}, /* PI */
{TAP_UI, TAP_SI}, /* E2I */
{TAP_SDS, TAP_RTI} /* UI */
};
char* jtag_event_strings[] =
{
"JTAG controller reset(tms or TRST)"
};
/* kludge!!!! these are just global variables that the
* interface use internally. They really belong
* inside the drivers, but we don't want to break
* linking the drivers!!!!
*/
enum tap_state end_state = TAP_TLR;
enum tap_state cur_state = TAP_TLR;
int jtag_trst = 0;
int jtag_srst = 0;
jtag_command_t *jtag_command_queue = NULL;
jtag_command_t **last_comand_pointer = &jtag_command_queue;
jtag_device_t *jtag_devices = NULL;
int jtag_num_devices = 0;
int jtag_ir_scan_size = 0;
enum reset_types jtag_reset_config = RESET_NONE;
enum tap_state cmd_queue_end_state = TAP_TLR;
enum tap_state cmd_queue_cur_state = TAP_TLR;
int jtag_verify_capture_ir = 1;
/* how long the OpenOCD should wait before attempting JTAG communication after reset lines deasserted (in ms) */
int jtag_nsrst_delay = 0; /* default to no nSRST delay */
int jtag_ntrst_delay = 0; /* default to no nTRST delay */
/* maximum number of JTAG devices expected in the chain
*/
#define JTAG_MAX_CHAIN_SIZE 20
/* callbacks to inform high-level handlers about JTAG state changes */
jtag_event_callback_t *jtag_event_callbacks;
/* speed in kHz*/
static int speed1 = 0, speed2 = 0;
/* flag if the kHz speed was defined */
static int hasKHz = 0;
/* jtag interfaces (parport, FTDI-USB, TI-USB, ...)
*/
#if BUILD_ECOSBOARD == 1
extern jtag_interface_t eCosBoard_interface;
#endif
#if BUILD_PARPORT == 1
extern jtag_interface_t parport_interface;
#endif
#if BUILD_FT2232_FTD2XX == 1
extern jtag_interface_t ft2232_interface;
#endif
#if BUILD_FT2232_LIBFTDI == 1
extern jtag_interface_t ft2232_interface;
#endif
#if BUILD_AMTJTAGACCEL == 1
extern jtag_interface_t amt_jtagaccel_interface;
#endif
#if BUILD_EP93XX == 1
extern jtag_interface_t ep93xx_interface;
#endif
#if BUILD_AT91RM9200 == 1
extern jtag_interface_t at91rm9200_interface;
#endif
#if BUILD_GW16012 == 1
extern jtag_interface_t gw16012_interface;
#endif
#if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
extern jtag_interface_t presto_interface;
#endif
#if BUILD_USBPROG == 1
extern jtag_interface_t usbprog_interface;
#endif
jtag_interface_t *jtag_interfaces[] = {
#if BUILD_ECOSBOARD == 1
&eCosBoard_interface,
#endif
#if BUILD_PARPORT == 1
&parport_interface,
#endif
#if BUILD_FT2232_FTD2XX == 1
&ft2232_interface,
#endif
#if BUILD_FT2232_LIBFTDI == 1
&ft2232_interface,
#endif
#if BUILD_AMTJTAGACCEL == 1
&amt_jtagaccel_interface,
#endif
#if BUILD_EP93XX == 1
&ep93xx_interface,
#endif
#if BUILD_AT91RM9200 == 1
&at91rm9200_interface,
#endif
#if BUILD_GW16012 == 1
&gw16012_interface,
#endif
#if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
&presto_interface,
#endif
#if BUILD_USBPROG == 1
&usbprog_interface,
#endif
NULL,
};
jtag_interface_t *jtag = NULL;
/* configuration */
jtag_interface_t *jtag_interface = NULL;
int jtag_speed = 0;
int jtag_speed_post_reset = 0;
/* forward declarations */
void jtag_add_pathmove(int num_states, enum tap_state *path);
void jtag_add_runtest(int num_cycles, enum tap_state endstate);
void jtag_add_end_state(enum tap_state endstate);
void 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_khz_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_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;
LOG_DEBUG("jtag event: %s", jtag_event_strings[event]);
while (callback)
{
callback->callback(event, callback->priv);
callback = callback->next;
}
return ERROR_OK;
}
/* returns a pointer to the pointer of the last command in queue
* this may be a pointer to the root pointer (jtag_command_queue)
* or to the next member of the last but one command
*/
jtag_command_t** jtag_get_last_command_p(void)
{
/* jtag_command_t *cmd = jtag_command_queue;
if (cmd)
while (cmd->next)
cmd = cmd->next;
else
return &jtag_command_queue;
return &cmd->next;*/
return last_comand_pointer;
}
/* returns a pointer to the n-th device in the scan chain */
jtag_device_t* jtag_get_device(int num)
{
jtag_device_t *device = jtag_devices;
int i = 0;
while (device)
{
if (num == i)
return device;
device = device->next;
i++;
}
LOG_ERROR("jtag device number %d not defined", num);
exit(-1);
}
void* cmd_queue_alloc(size_t size)
{
cmd_queue_page_t **p_page = &cmd_queue_pages;
int offset;
if (*p_page)
{
while ((*p_page)->next)
p_page = &((*p_page)->next);
if (CMD_QUEUE_PAGE_SIZE - (*p_page)->used < size)
p_page = &((*p_page)->next);
}
if (!*p_page)
{
*p_page = malloc(sizeof(cmd_queue_page_t));
(*p_page)->used = 0;
(*p_page)->address = malloc(CMD_QUEUE_PAGE_SIZE);
(*p_page)->next = NULL;
}
offset = (*p_page)->used;
(*p_page)->used += size;
u8 *t=(u8 *)((*p_page)->address);
return t + offset;
}
void cmd_queue_free()
{
cmd_queue_page_t *page = cmd_queue_pages;
while (page)
{
cmd_queue_page_t *last = page;
free(page->address);
page = page->next;
free(last);
}
cmd_queue_pages = NULL;
}
static void jtag_prelude1()
{
if (jtag_trst == 1)
{
LOG_WARNING("JTAG command queued, while TRST is low (TAP in reset)");
jtag_error=ERROR_JTAG_TRST_ASSERTED;
return;
}
if (cmd_queue_end_state == TAP_TLR)
jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
}
static void jtag_prelude(enum tap_state state)
{
jtag_prelude1();
if (state != -1)
jtag_add_end_state(state);
cmd_queue_cur_state = cmd_queue_end_state;
}
void jtag_add_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state)
{
jtag_prelude(state);
int retval=interface_jtag_add_ir_scan(num_fields, fields, cmd_queue_end_state);
if (retval!=ERROR_OK)
jtag_error=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 */
*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;
for (i = 0; i < jtag_num_devices; i++)
{
int found = 0;
device = jtag_get_device(i);
scan_size = device->ir_length;
(*last_cmd)->cmd.scan->fields[i].device = i;
(*last_cmd)->cmd.scan->fields[i].num_bits = scan_size;
(*last_cmd)->cmd.scan->fields[i].in_value = NULL;
(*last_cmd)->cmd.scan->fields[i].in_handler = NULL; /* disable verification by default */
/* search the list */
for (j = 0; j < num_fields; j++)
{
if (i == fields[j].device)
{
found = 1;
(*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[j].out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
(*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[j].out_mask, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
if (jtag_verify_capture_ir)
{
if (fields[j].in_handler==NULL)
{
jtag_set_check_value((*last_cmd)->cmd.scan->fields+i, device->expected, device->expected_mask, NULL);
} else
{
(*last_cmd)->cmd.scan->fields[i].in_handler = fields[j].in_handler;
(*last_cmd)->cmd.scan->fields[i].in_handler_priv = fields[j].in_handler_priv;
(*last_cmd)->cmd.scan->fields[i].in_check_value = device->expected;
(*last_cmd)->cmd.scan->fields[i].in_check_mask = device->expected_mask;
}
}
device->bypass = 0;
break;
}
}
if (!found)
{
/* if a device isn't listed, set it to BYPASS */
(*last_cmd)->cmd.scan->fields[i].out_value = buf_set_ones(cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
(*last_cmd)->cmd.scan->fields[i].out_mask = NULL;
device->bypass = 1;
}
/* update device information */
buf_cpy((*last_cmd)->cmd.scan->fields[i].out_value, jtag_get_device(i)->cur_instr, scan_size);
}
return ERROR_OK;
}
void jtag_add_plain_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state)
{
jtag_prelude(state);
int retval=interface_jtag_add_plain_ir_scan(num_fields, fields, cmd_queue_end_state);
if (retval!=ERROR_OK)
jtag_error=retval;
}
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 */
*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;
for (i = 0; i < num_fields; i++)
{
int num_bits = fields[i].num_bits;
int num_bytes = CEIL(fields[i].num_bits, 8);
(*last_cmd)->cmd.scan->fields[i].device = fields[i].device;
(*last_cmd)->cmd.scan->fields[i].num_bits = num_bits;
(*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[i].out_value, cmd_queue_alloc(num_bytes), num_bits);
(*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[i].out_mask, cmd_queue_alloc(num_bytes), num_bits);
(*last_cmd)->cmd.scan->fields[i].in_value = fields[i].in_value;
(*last_cmd)->cmd.scan->fields[i].in_check_value = fields[i].in_check_value;
(*last_cmd)->cmd.scan->fields[i].in_check_mask = fields[i].in_check_mask;
(*last_cmd)->cmd.scan->fields[i].in_handler = NULL;
(*last_cmd)->cmd.scan->fields[i].in_handler_priv = NULL;
}
return ERROR_OK;
}
void jtag_add_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state)
{
jtag_prelude(state);
int retval=interface_jtag_add_dr_scan(num_fields, fields, cmd_queue_end_state);
if (retval!=ERROR_OK)
jtag_error=retval;
}
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;
int scan_size;
jtag_command_t **last_cmd = jtag_get_last_command_p();
jtag_device_t *device = jtag_devices;
/* 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;
for (i = 0; i < jtag_num_devices; i++)
{
int found = 0;
(*last_cmd)->cmd.scan->fields[field_count].device = i;
for (j = 0; j < num_fields; j++)
{
if (i == fields[j].device)
{
found = 1;
scan_size = fields[j].num_bits;
(*last_cmd)->cmd.scan->fields[field_count].num_bits = scan_size;
(*last_cmd)->cmd.scan->fields[field_count].out_value = buf_cpy(fields[j].out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
(*last_cmd)->cmd.scan->fields[field_count].out_mask = buf_cpy(fields[j].out_mask, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
(*last_cmd)->cmd.scan->fields[field_count].in_value = fields[j].in_value;
(*last_cmd)->cmd.scan->fields[field_count].in_check_value = fields[j].in_check_value;
(*last_cmd)->cmd.scan->fields[field_count].in_check_mask = fields[j].in_check_mask;
(*last_cmd)->cmd.scan->fields[field_count].in_handler = fields[j].in_handler;
(*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = fields[j].in_handler_priv;
}
}
if (!found)
{
#ifdef _DEBUG_JTAG_IO_
/* if a device isn't listed, the BYPASS register should be selected */
if (!jtag_get_device(i)->bypass)
{
LOG_ERROR("BUG: no scan data for a device not in BYPASS");
exit(-1);
}
#endif
/* 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
{
#ifdef _DEBUG_JTAG_IO_
/* if a device is listed, the BYPASS register must not be selected */
if (jtag_get_device(i)->bypass)
{
LOG_ERROR("BUG: scan data for a device in BYPASS");
exit(-1);
}
#endif
}
}
return ERROR_OK;
}
void MINIDRIVER(interface_jtag_add_dr_out)(int device_num,
int num_fields,
int *num_bits,
u32 *value,
enum tap_state end_state)
{
int i;
int field_count = 0;
int scan_size;
int bypass_devices = 0;
jtag_command_t **last_cmd = jtag_get_last_command_p();
jtag_device_t *device = jtag_devices;
/* 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 = end_state;
for (i = 0; i < jtag_num_devices; i++)
{
(*last_cmd)->cmd.scan->fields[field_count].device = i;
if (i == device_num)
{
int j;
#ifdef _DEBUG_JTAG_IO_
/* if a device is listed, the BYPASS register must not be selected */
if (jtag_get_device(i)->bypass)
{
LOG_ERROR("BUG: scan data for a device in BYPASS");
exit(-1);
}
#endif
for (j = 0; j < num_fields; j++)
{
u8 out_value[4];
scan_size = num_bits[j];
buf_set_u32(out_value, 0, scan_size, value[j]);
(*last_cmd)->cmd.scan->fields[field_count].num_bits = scan_size;
(*last_cmd)->cmd.scan->fields[field_count].out_value = buf_cpy(out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
(*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
{
#ifdef _DEBUG_JTAG_IO_
/* if a device isn't listed, the BYPASS register should be selected */
if (!jtag_get_device(i)->bypass)
{
LOG_ERROR("BUG: no scan data for a device not in BYPASS");
exit(-1);
}
#endif
/* 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;
}
}
}
void jtag_add_plain_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state)
{
jtag_prelude(state);
int retval=interface_jtag_add_plain_dr_scan(num_fields, fields, cmd_queue_end_state);
if (retval!=ERROR_OK)
jtag_error=retval;
}
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);
(*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;
for (i = 0; i < num_fields; i++)
{
int num_bits = fields[i].num_bits;
int num_bytes = CEIL(fields[i].num_bits, 8);
(*last_cmd)->cmd.scan->fields[i].device = fields[i].device;
(*last_cmd)->cmd.scan->fields[i].num_bits = num_bits;
(*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[i].out_value, cmd_queue_alloc(num_bytes), num_bits);
(*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[i].out_mask, cmd_queue_alloc(num_bytes), num_bits);
(*last_cmd)->cmd.scan->fields[i].in_value = fields[i].in_value;
(*last_cmd)->cmd.scan->fields[i].in_check_value = fields[i].in_check_value;
(*last_cmd)->cmd.scan->fields[i].in_check_mask = fields[i].in_check_mask;
(*last_cmd)->cmd.scan->fields[i].in_handler = fields[i].in_handler;
(*last_cmd)->cmd.scan->fields[i].in_handler_priv = fields[i].in_handler_priv;
}
return ERROR_OK;
}
void jtag_add_tms()
{
jtag_prelude(TAP_TLR);
int retval;
retval=interface_jtag_add_tms();
if (retval!=ERROR_OK)
jtag_error=retval;
}
int MINIDRIVER(interface_jtag_add_tms)()
{
enum tap_state state = TAP_TLR;
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;
}
void jtag_add_pathmove(int num_states, enum tap_state *path)
{
/* the last state has to be a stable state */
if (tap_move_map[path[num_states - 1]] == -1)
{
LOG_ERROR("BUG: TAP path doesn't finish in a stable state");
exit(-1);
}
enum tap_state cur_state=cmd_queue_cur_state;
int i;
for (i=0; i<num_states; i++)
{
if ((tap_transitions[cur_state].low != path[i])&&
(tap_transitions[cur_state].high != path[i]))
{
LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_strings[cur_state], tap_state_strings[path[i]]);
exit(-1);
}
cur_state = path[i];
}
jtag_prelude1();
cmd_queue_cur_state = path[num_states - 1];
int retval=interface_jtag_add_pathmove(num_states, path);
if (retval!=ERROR_OK)
jtag_error=retval;
}
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;
/* allocate memory for a new list member */
*last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
last_comand_pointer = &((*last_cmd)->next);
(*last_cmd)->next = NULL;
(*last_cmd)->type = JTAG_PATHMOVE;
(*last_cmd)->cmd.pathmove = cmd_queue_alloc(sizeof(pathmove_command_t));
(*last_cmd)->cmd.pathmove->num_states = num_states;
(*last_cmd)->cmd.pathmove->path = cmd_queue_alloc(sizeof(enum tap_state) * num_states);
for (i = 0; i < num_states; i++)
(*last_cmd)->cmd.pathmove->path[i] = path[i];
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;
}
void jtag_add_runtest(int num_cycles, enum tap_state state)
{
jtag_prelude(state);
/* executed by sw or hw fifo */
int retval=interface_jtag_add_runtest(num_cycles, cmd_queue_end_state);
if (retval!=ERROR_OK)
jtag_error=retval;
}
void jtag_add_reset(int req_tms_or_trst, int req_srst)
{
int trst_with_tms = 0;
int retval;
/* 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_tms_or_trst))
{
LOG_ERROR("BUG: requested reset would assert trst");
jtag_error=ERROR_FAIL;
return;
}
/* if TRST pulls SRST, we reset with TAP T-L-R */
if (((jtag_reset_config & RESET_TRST_PULLS_SRST) && (req_tms_or_trst)) && (req_srst == 0))
{
trst_with_tms = 1;
}
if (req_srst && !(jtag_reset_config & RESET_HAS_SRST))
{
LOG_ERROR("BUG: requested SRST assertion, but the current configuration doesn't support this");
jtag_error=ERROR_FAIL;
return;
}
if (req_tms_or_trst)
{
if (!trst_with_tms && (jtag_reset_config & RESET_HAS_TRST))
{
jtag_trst = 1;
} else
{
trst_with_tms = 1;
}
} else
{
jtag_trst = 0;
}
jtag_srst = req_srst;
retval = interface_jtag_add_reset(jtag_trst, jtag_srst);
if (retval!=ERROR_OK)
{
jtag_error=retval;
return;
}
if (jtag_srst)
{
LOG_DEBUG("SRST line asserted");
}
else
{
LOG_DEBUG("SRST line released");
if (jtag_nsrst_delay)
jtag_add_sleep(jtag_nsrst_delay * 1000);
}
if (trst_with_tms)
{
LOG_DEBUG("JTAG reset with tms instead of TRST");
jtag_add_end_state(TAP_TLR);
jtag_add_tms();
jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
return;
}
if (jtag_trst)
{
/* we just asserted nTRST, so we're now in Test-Logic-Reset,
* and inform possible listeners about this
*/
LOG_DEBUG("TRST line asserted");
cmd_queue_cur_state = TAP_TLR;
jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
}
else
{
if (jtag_ntrst_delay)
jtag_add_sleep(jtag_ntrst_delay * 1000);
}
}
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;
}
void jtag_add_end_state(enum tap_state state)
{
cmd_queue_end_state = state;
if ((cmd_queue_end_state == TAP_SD)||(cmd_queue_end_state == TAP_SD))
{
LOG_ERROR("BUG: TAP_SD/SI can't be end state. Calling code should use a larger scan field");
}
}
int MINIDRIVER(interface_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;
}
void jtag_add_sleep(u32 us)
{
int retval=interface_jtag_add_sleep(us);
if (retval!=ERROR_OK)
jtag_error=retval;
return;
}
int jtag_scan_size(scan_command_t *cmd)
{
int bit_count = 0;
int i;
/* count bits in scan command */
for (i = 0; i < cmd->num_fields; i++)
{
bit_count += cmd->fields[i].num_bits;
}
return bit_count;
}
int jtag_build_buffer(scan_command_t *cmd, u8 **buffer)
{
int bit_count = 0;
int i;
bit_count = jtag_scan_size(cmd);
*buffer = malloc(CEIL(bit_count, 8));
bit_count = 0;
for (i = 0; i < cmd->num_fields; i++)
{
if (cmd->fields[i].out_value)
{
#ifdef _DEBUG_JTAG_IO_
char* char_buf = buf_to_str(cmd->fields[i].out_value, (cmd->fields[i].num_bits > 64) ? 64 : cmd->fields[i].num_bits, 16);
#endif
buf_set_buf(cmd->fields[i].out_value, 0, *buffer, bit_count, cmd->fields[i].num_bits);
#ifdef _DEBUG_JTAG_IO_
LOG_DEBUG("fields[%i].out_value: 0x%s", i, char_buf);
free(char_buf);
#endif
}
bit_count += cmd->fields[i].num_bits;
}
return bit_count;
}
int jtag_read_buffer(u8 *buffer, scan_command_t *cmd)
{
int i;
int bit_count = 0;
int retval;
/* we return ERROR_OK, unless a check fails, or a handler reports a problem */
retval = ERROR_OK;
for (i = 0; i < cmd->num_fields; i++)
{
/* if neither in_value nor in_handler
* are specified we don't have to examine this field
*/
if (cmd->fields[i].in_value || cmd->fields[i].in_handler)
{
int num_bits = cmd->fields[i].num_bits;
u8 *captured = buf_set_buf(buffer, bit_count, malloc(CEIL(num_bits, 8)), 0, num_bits);
#ifdef _DEBUG_JTAG_IO_
char *char_buf;
char_buf = buf_to_str(captured, (num_bits > 64) ? 64 : num_bits, 16);
LOG_DEBUG("fields[%i].in_value: 0x%s", i, char_buf);
free(char_buf);
#endif
if (cmd->fields[i].in_value)
{
buf_cpy(captured, cmd->fields[i].in_value, num_bits);
if (cmd->fields[i].in_handler)
{
if (cmd->fields[i].in_handler(cmd->fields[i].in_value, cmd->fields[i].in_handler_priv, cmd->fields+i) != ERROR_OK)
{
LOG_WARNING("in_handler reported a failed check");
retval = ERROR_JTAG_QUEUE_FAILED;
}
}
}
/* no in_value specified, but a handler takes care of the scanned data */
if (cmd->fields[i].in_handler && (!cmd->fields[i].in_value))
{
if (cmd->fields[i].in_handler(captured, cmd->fields[i].in_handler_priv, cmd->fields+i) != ERROR_OK)
{
/* We're going to call the error:handler later, but if the in_handler
* reported an error we report this failure upstream
*/
LOG_WARNING("in_handler reported a failed check");
retval = ERROR_JTAG_QUEUE_FAILED;
}
}
free(captured);
}
bit_count += cmd->fields[i].num_bits;
}
return retval;
}
int jtag_check_value(u8 *captured, void *priv, scan_field_t *field)
{
int retval = ERROR_OK;
int num_bits = field->num_bits;
int compare_failed = 0;
if (field->in_check_mask)
compare_failed = buf_cmp_mask(captured, field->in_check_value, field->in_check_mask, num_bits);
else
compare_failed = buf_cmp(captured, field->in_check_value, num_bits);
if (compare_failed)
{
/* An error handler could have caught the failing check
* only report a problem when there wasn't a handler, or if the handler
* acknowledged the error
*/
if (compare_failed)
{
char *captured_char = buf_to_str(captured, (num_bits > 64) ? 64 : num_bits, 16);
char *in_check_value_char = buf_to_str(field->in_check_value, (num_bits > 64) ? 64 : num_bits, 16);
if (field->in_check_mask)
{
char *in_check_mask_char;
in_check_mask_char = buf_to_str(field->in_check_mask, (num_bits > 64) ? 64 : num_bits, 16);
LOG_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
{
LOG_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++)
{
if (cmd->fields[i].in_value || cmd->fields[i].in_handler)
type |= SCAN_IN;
if (cmd->fields[i].out_value)
type |= SCAN_OUT;
}
return type;
}
int MINIDRIVER(interface_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_execute_queue(void)
{
int retval=interface_jtag_execute_queue();
if (retval==ERROR_OK)
{
retval=jtag_error;
}
jtag_error=ERROR_OK;
return retval;
}
int jtag_reset_callback(enum jtag_event event, void *priv)
{
jtag_device_t *device = priv;
LOG_DEBUG("-");
if (event == JTAG_TRST_ASSERTED)
{
buf_set_ones(device->cur_instr, device->ir_length);
device->bypass = 1;
}
return ERROR_OK;
}
void jtag_sleep(u32 us)
{
usleep(us);
}
/* Try to examine chain layout according to IEEE 1149.1 §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))
{
LOG_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;
LOG_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)
{
LOG_ERROR("number of discovered devices in JTAG chain (%i) doesn't match configuration (%i)",
device_count, jtag_num_devices);
LOG_ERROR("check the config file and ensure proper JTAG communication (connections, speed, ...)");
return ERROR_JTAG_INIT_FAILED;
}
return ERROR_OK;
}
int jtag_validate_chain()
{
jtag_device_t *device = jtag_devices;
int total_ir_length = 0;
u8 *ir_test = NULL;
scan_field_t field;
int chain_pos = 0;
while (device)
{
total_ir_length += device->ir_length;
device = device->next;
}
total_ir_length += 2;
ir_test = malloc(CEIL(total_ir_length, 8));
buf_set_ones(ir_test, total_ir_length);
field.device = 0;
field.num_bits = total_ir_length;
field.out_value = ir_test;
field.out_mask = NULL;
field.in_value = ir_test;
field.in_check_value = NULL;
field.in_check_mask = NULL;
field.in_handler = NULL;
field.in_handler_priv = NULL;
jtag_add_plain_ir_scan(1, &field, TAP_TLR);
jtag_execute_queue();
device = jtag_devices;
while (device)
{
if (buf_get_u32(ir_test, chain_pos, 2) != 0x1)
{
char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
LOG_ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf);
free(cbuf);
free(ir_test);
return ERROR_JTAG_INIT_FAILED;
}
chain_pos += device->ir_length;
device = device->next;
}
if (buf_get_u32(ir_test, chain_pos, 2) != 0x3)
{
char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
LOG_ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf);
free(cbuf);
free(ir_test);
return ERROR_JTAG_INIT_FAILED;
}
free(ir_test);
return ERROR_OK;
}
int jtag_register_commands(struct command_context_s *cmd_ctx)
{
register_command(cmd_ctx, NULL, "interface", handle_interface_command,
COMMAND_CONFIG, NULL);
register_command(cmd_ctx, NULL, "jtag_speed", handle_jtag_speed_command,
COMMAND_ANY, "set jtag speed (if supported) <reset speed> [<post reset speed, default value is reset speed>]");
register_command(cmd_ctx, NULL, "jtag_khz", handle_jtag_khz_command,
COMMAND_ANY, "same as jtag_speed, except it takes maximum khz as arguments. 0 KHz = RTCK.");
register_command(cmd_ctx, NULL, "jtag_device", handle_jtag_device_command,
COMMAND_CONFIG, "jtag_device <ir_length> <ir_expected> <ir_mask>");
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, "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_interface_init(struct command_context_s *cmd_ctx)
{
if (!jtag_interface)
{
/* nothing was previously specified by "interface" command */
LOG_ERROR("JTAG interface has to be specified, see \"interface\" command");
return ERROR_JTAG_INVALID_INTERFACE;
}
if(hasKHz)
{
/*stay on "reset speed"*/
if (jtag_interface->khz(speed1, &speed1) == ERROR_OK)
jtag_speed = speed1;
if (jtag_interface->khz(speed2, &speed2) == ERROR_OK)
jtag_speed_post_reset = speed2;
hasKHz = 0;
}
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 validate_tries = 0;
jtag_device_t *device;
LOG_DEBUG("-");
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;
}
jtag_add_tms();
jtag_execute_queue();
/* examine chain first, as this could discover the real chain layout */
if (jtag_examine_chain() != ERROR_OK)
{
LOG_ERROR("trying to validate configured JTAG chain anyway...");
}
while (jtag_validate_chain() != ERROR_OK)
{
validate_tries++;
if (validate_tries > 5)
{
LOG_ERROR("Could not validate JTAG chain, exit");
return ERROR_JTAG_INVALID_INTERFACE;
}
usleep(10000);
}
return ERROR_OK;
}
static int default_khz(int khz, int *jtag_speed)
{
LOG_ERROR("Translation from khz to jtag_speed not implemented");
return ERROR_FAIL;
}
int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
int i;
/* check whether the interface is already configured */
if (jtag_interface)
{
LOG_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)
{
if (jtag_interfaces[i]->register_commands(cmd_ctx) != ERROR_OK)
exit(-1);
jtag_interface = jtag_interfaces[i];
if (jtag_interface->khz == NULL)
{
jtag_interface->khz = default_khz;
}
return ERROR_OK;
}
}
/* no valid interface was found (i.e. the configuration option,
* didn't match one of the compiled-in interfaces
*/
LOG_ERROR("No valid jtag interface found (%s)", args[0]);
LOG_ERROR("compiled-in jtag interfaces:");
for (i = 0; jtag_interfaces[i]; i++)
{
LOG_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)
{
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)
return ERROR_COMMAND_SYNTAX_ERROR;
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
{
LOG_ERROR("invalid reset_config argument, defaulting to none");
jtag_reset_config = RESET_NONE;
return ERROR_INVALID_ARGUMENTS;
}
}
if (argc >= 2)
{
if (strcmp(args[1], "separate") == 0)
{
/* seperate reset lines - default */
} else
{
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
{
LOG_ERROR("invalid reset_config argument, defaulting to none");
jtag_reset_config = RESET_NONE;
return ERROR_INVALID_ARGUMENTS;
}
}
}
if (argc >= 3)
{
if (strcmp(args[2], "trst_open_drain") == 0)
jtag_reset_config |= RESET_TRST_OPEN_DRAIN;
else if (strcmp(args[2], "trst_push_pull") == 0)
jtag_reset_config &= ~RESET_TRST_OPEN_DRAIN;
else
{
LOG_ERROR("invalid reset_config argument, defaulting to none");
jtag_reset_config = RESET_NONE;
return ERROR_INVALID_ARGUMENTS;
}
}
if (argc >= 4)
{
if (strcmp(args[3], "srst_push_pull") == 0)
jtag_reset_config |= RESET_SRST_PUSH_PULL;
else if (strcmp(args[3], "srst_open_drain") == 0)
jtag_reset_config &= ~RESET_SRST_PUSH_PULL;
else
{
LOG_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)
{
LOG_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)
{
LOG_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)
{
int cur_speed = 0;
if (argc != 0)
{
if ((argc<1) || (argc>2))
return ERROR_COMMAND_SYNTAX_ERROR;
LOG_DEBUG("handle jtag speed");
if (argc >= 1)
cur_speed = jtag_speed = jtag_speed_post_reset = strtoul(args[0], NULL, 0);
if (argc == 2)
cur_speed = jtag_speed_post_reset = strtoul(args[1], NULL, 0);
/* this command can be called during CONFIG,
* in which case jtag isn't initialized */
if (jtag)
jtag->speed(cur_speed);
}
command_print(cmd_ctx, "jtag_speed: %d, %d", jtag_speed, jtag_speed_post_reset);
return ERROR_OK;
}
int handle_jtag_khz_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
LOG_DEBUG("handle jtag khz");
if ((argc<1) || (argc>2))
return ERROR_COMMAND_SYNTAX_ERROR;
if (argc >= 1)
speed1 = speed2 = strtoul(args[0], NULL, 0);
if (argc == 2)
speed2 = strtoul(args[1], NULL, 0);
if (jtag != NULL)
{
int cur_speed = 0;
LOG_DEBUG("have interface set up");
int speed_div1, speed_div2;
if (jtag->khz(speed1, &speed_div1)!=ERROR_OK)
return ERROR_OK;
if (jtag->khz(speed2, &speed_div2)!=ERROR_OK)
return ERROR_OK;
if (argc >= 1)
cur_speed = jtag_speed = jtag_speed_post_reset = speed_div1;
if (argc == 2)
cur_speed = jtag_speed_post_reset = speed_div2;
jtag->speed(cur_speed);
} else
{
hasKHz = 1;
}
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)
{
return ERROR_COMMAND_SYNTAX_ERROR;
}
else
{
for (state = 0; state < 16; state++)
{
if (strcmp(args[0], tap_state_strings[state]) == 0)
{
jtag_add_end_state(state);
jtag_execute_queue();
}
}
}
command_print(cmd_ctx, "current endstate: %s", tap_state_strings[cmd_queue_end_state]);
return ERROR_OK;
}
int handle_jtag_reset_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
int trst = -1;
int srst = -1;
if (argc < 2)
{
return ERROR_COMMAND_SYNTAX_ERROR;
}
if (args[0][0] == '1')
trst = 1;
else if (args[0][0] == '0')
trst = 0;
else
{
return ERROR_COMMAND_SYNTAX_ERROR;
}
if (args[1][0] == '1')
srst = 1;
else if (args[1][0] == '0')
srst = 0;
else
{
return ERROR_COMMAND_SYNTAX_ERROR;
}
if (!jtag && jtag_interface_init(cmd_ctx) != ERROR_OK)
return ERROR_JTAG_INIT_FAILED;
jtag_add_reset(trst, srst);
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)
{
return ERROR_COMMAND_SYNTAX_ERROR;
}
jtag_add_runtest(strtol(args[0], NULL, 0), -1);
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))
{
return ERROR_COMMAND_SYNTAX_ERROR;
}
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))
{
return ERROR_COMMAND_SYNTAX_ERROR;
}
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 == 1)
{
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)
{
return ERROR_COMMAND_SYNTAX_ERROR;
}
command_print(cmd_ctx, "verify Capture-IR is %s", (jtag_verify_capture_ir) ? "enabled": "disabled");
return ERROR_OK;
}
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