|
- /***************************************************************************
- * Copyright (C) 2009-2010 by Simon Qian <SimonQian@SimonQian.com> *
- * *
- * 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, see <http://www.gnu.org/licenses/>. *
- ***************************************************************************/
-
- /* Versaloon is a programming tool for multiple MCUs.
- * It's distributed under GPLv3.
- * You can find it at http://www.Versaloon.com/.
- */
-
- #ifdef HAVE_CONFIG_H
- #include "config.h"
- #endif
-
- #include <jtag/interface.h>
- #include <jtag/commands.h>
- #include <jtag/swd.h>
- #include <libusb.h>
-
- #include "versaloon/versaloon_include.h"
- #include "versaloon/versaloon.h"
-
- static int vsllink_tms_offset;
-
- struct pending_scan_result {
- int src_offset;
- int dest_offset;
- int length; /* Number of bits to read */
- struct scan_command *command; /* Corresponding scan command */
- uint8_t *ack;
- uint8_t *buffer;
- bool last; /* indicate the last scan pending */
- };
-
- #define MAX_PENDING_SCAN_RESULTS 256
-
- static int pending_scan_results_length;
- static struct pending_scan_result
- pending_scan_results_buffer[MAX_PENDING_SCAN_RESULTS];
-
- /* Queue command functions */
- static void vsllink_end_state(tap_state_t state);
- static void vsllink_state_move(void);
- static void vsllink_path_move(int num_states, tap_state_t *path);
- static void vsllink_tms(int num_bits, const uint8_t *bits);
- static void vsllink_runtest(int num_cycles);
- static void vsllink_stableclocks(int num_cycles, int tms);
- static void vsllink_scan(bool ir_scan, enum scan_type type,
- uint8_t *buffer, int scan_size, struct scan_command *command);
- static void vsllink_reset(int trst, int srst);
-
- /* VSLLink tap buffer functions */
- static void vsllink_tap_append_step(int tms, int tdi);
- static void vsllink_tap_init(void);
- static int vsllink_tap_execute(void);
- static void vsllink_tap_ensure_pending(int scans);
- static void vsllink_tap_append_scan(int length, uint8_t *buffer,
- struct scan_command *command);
-
- /* VSLLink SWD functions */
- static int_least32_t vsllink_swd_frequency(int_least32_t hz);
- static int vsllink_swd_switch_seq(enum swd_special_seq seq);
-
- /* VSLLink lowlevel functions */
- struct vsllink {
- struct libusb_context *libusb_ctx;
- struct libusb_device_handle *usb_device_handle;
- };
-
- static int vsllink_usb_open(struct vsllink *vsllink);
- static void vsllink_usb_close(struct vsllink *vsllink);
-
- #if defined _DEBUG_JTAG_IO_
- static void vsllink_debug_buffer(uint8_t *buffer, int length);
- #endif
-
- static int tap_length;
- static int tap_buffer_size;
- static uint8_t *tms_buffer;
- static uint8_t *tdi_buffer;
- static uint8_t *tdo_buffer;
-
- static bool swd_mode;
-
- static struct vsllink *vsllink_handle;
-
- static int vsllink_execute_queue(void)
- {
- struct jtag_command *cmd = jtag_command_queue;
- int scan_size;
- enum scan_type type;
- uint8_t *buffer;
-
- DEBUG_JTAG_IO("-------------------------------------"
- " vsllink "
- "-------------------------------------");
-
- while (cmd != NULL) {
- switch (cmd->type) {
- case JTAG_RUNTEST:
- DEBUG_JTAG_IO("runtest %i cycles, end in %s",
- cmd->cmd.runtest->num_cycles,
- tap_state_name(cmd->cmd.runtest->end_state));
-
- vsllink_end_state(cmd->cmd.runtest->end_state);
- vsllink_runtest(cmd->cmd.runtest->num_cycles);
- break;
-
- case JTAG_TLR_RESET:
- DEBUG_JTAG_IO("statemove end in %s",
- tap_state_name(cmd->cmd.statemove->end_state));
-
- vsllink_end_state(cmd->cmd.statemove->end_state);
- vsllink_state_move();
- break;
-
- case JTAG_PATHMOVE:
- DEBUG_JTAG_IO("pathmove: %i states, end in %s",
- cmd->cmd.pathmove->num_states,
- tap_state_name(cmd->cmd.pathmove->path[cmd->cmd.pathmove->num_states - 1]));
-
- vsllink_path_move(cmd->cmd.pathmove->num_states, cmd->cmd.pathmove->path);
- break;
-
- case JTAG_SCAN:
- DEBUG_JTAG_IO("JTAG Scan...");
-
- vsllink_end_state(cmd->cmd.scan->end_state);
-
- scan_size = jtag_build_buffer(
- cmd->cmd.scan, &buffer);
-
- if (cmd->cmd.scan->ir_scan)
- DEBUG_JTAG_IO(
- "JTAG Scan write IR(%d bits), "
- "end in %s:",
- scan_size,
- tap_state_name(cmd->cmd.scan->end_state));
-
- else
- DEBUG_JTAG_IO(
- "JTAG Scan write DR(%d bits), "
- "end in %s:",
- scan_size,
- tap_state_name(cmd->cmd.scan->end_state));
-
- #ifdef _DEBUG_JTAG_IO_
- vsllink_debug_buffer(buffer,
- DIV_ROUND_UP(scan_size, 8));
- #endif
-
- type = jtag_scan_type(cmd->cmd.scan);
-
- vsllink_scan(cmd->cmd.scan->ir_scan,
- type, buffer, scan_size,
- cmd->cmd.scan);
- break;
-
- case JTAG_RESET:
- DEBUG_JTAG_IO("reset trst: %i srst %i",
- cmd->cmd.reset->trst,
- cmd->cmd.reset->srst);
-
- vsllink_tap_execute();
-
- if (cmd->cmd.reset->trst == 1)
- tap_set_state(TAP_RESET);
-
- vsllink_reset(cmd->cmd.reset->trst,
- cmd->cmd.reset->srst);
- break;
-
- case JTAG_SLEEP:
- DEBUG_JTAG_IO("sleep %i", cmd->cmd.sleep->us);
- vsllink_tap_execute();
- jtag_sleep(cmd->cmd.sleep->us);
- break;
-
- case JTAG_STABLECLOCKS:
- DEBUG_JTAG_IO("add %d clocks",
- cmd->cmd.stableclocks->num_cycles);
-
- switch (tap_get_state()) {
- case TAP_RESET:
- /* tms must be '1' to stay
- * n TAP_RESET mode
- */
- scan_size = 1;
- break;
- case TAP_DRSHIFT:
- case TAP_IDLE:
- case TAP_DRPAUSE:
- case TAP_IRSHIFT:
- case TAP_IRPAUSE:
- /* else, tms should be '0' */
- scan_size = 0;
- break;
- /* above stable states are OK */
- default:
- LOG_ERROR("jtag_add_clocks() "
- "in non-stable state \"%s\"",
- tap_state_name(tap_get_state())
- );
- exit(-1);
- }
- vsllink_stableclocks(cmd->cmd.stableclocks->num_cycles, scan_size);
- break;
-
- case JTAG_TMS:
- DEBUG_JTAG_IO("add %d jtag tms",
- cmd->cmd.tms->num_bits);
-
- vsllink_tms(cmd->cmd.tms->num_bits, cmd->cmd.tms->bits);
- break;
-
- default:
- LOG_ERROR("BUG: unknown JTAG command type "
- "encountered: %d", cmd->type);
- exit(-1);
- }
- cmd = cmd->next;
- }
-
- return vsllink_tap_execute();
- }
-
- static int vsllink_speed(int speed)
- {
- if (swd_mode) {
- vsllink_swd_frequency(speed * 1000);
- return ERROR_OK;
- }
-
- versaloon_interface.adaptors.jtag_raw.config(0, (uint16_t)speed);
- return versaloon_interface.adaptors.peripheral_commit();
- }
-
- static int vsllink_khz(int khz, int *jtag_speed)
- {
- *jtag_speed = khz;
-
- return ERROR_OK;
- }
-
- static int vsllink_speed_div(int jtag_speed, int *khz)
- {
- *khz = jtag_speed;
-
- return ERROR_OK;
- }
-
- static void vsllink_free_buffer(void)
- {
- if (tdi_buffer != NULL) {
- free(tdi_buffer);
- tdi_buffer = NULL;
- }
- if (tdo_buffer != NULL) {
- free(tdo_buffer);
- tdo_buffer = NULL;
- }
- if (tms_buffer != NULL) {
- free(tms_buffer);
- tms_buffer = NULL;
- }
- }
-
- static int vsllink_quit(void)
- {
- versaloon_interface.adaptors.gpio.config(0, GPIO_SRST | GPIO_TRST,
- 0, 0, GPIO_SRST | GPIO_TRST);
- versaloon_interface.adaptors.gpio.fini(0);
-
- if (swd_mode)
- versaloon_interface.adaptors.swd.fini(0);
- else
- versaloon_interface.adaptors.jtag_raw.fini(0);
-
- versaloon_interface.adaptors.peripheral_commit();
- versaloon_interface.fini();
-
- vsllink_free_buffer();
- vsllink_usb_close(vsllink_handle);
-
- free(vsllink_handle);
-
- return ERROR_OK;
- }
-
- static int vsllink_interface_init(void)
- {
- vsllink_handle = malloc(sizeof(struct vsllink));
- if (NULL == vsllink_handle) {
- LOG_ERROR("unable to allocate memory");
- return ERROR_FAIL;
- }
-
- libusb_init(&vsllink_handle->libusb_ctx);
-
- if (ERROR_OK != vsllink_usb_open(vsllink_handle)) {
- LOG_ERROR("Can't find USB JTAG Interface!" \
- "Please check connection and permissions.");
- return ERROR_JTAG_INIT_FAILED;
- }
- LOG_DEBUG("vsllink found on %04X:%04X",
- versaloon_interface.usb_setting.vid,
- versaloon_interface.usb_setting.pid);
- versaloon_usb_device_handle = vsllink_handle->usb_device_handle;
-
- if (ERROR_OK != versaloon_interface.init())
- return ERROR_FAIL;
- if (versaloon_interface.usb_setting.buf_size < 32) {
- versaloon_interface.fini();
- return ERROR_FAIL;
- }
-
- return ERROR_OK;
- }
-
- static int vsllink_init(void)
- {
- int retval = vsllink_interface_init();
- if (ERROR_OK != retval)
- return retval;
-
- versaloon_interface.adaptors.gpio.init(0);
- versaloon_interface.adaptors.gpio.config(0, GPIO_SRST, 0, GPIO_SRST,
- GPIO_SRST);
- versaloon_interface.adaptors.delay.delayms(100);
- versaloon_interface.adaptors.peripheral_commit();
-
- if (swd_mode) {
- versaloon_interface.adaptors.gpio.config(0, GPIO_TRST, 0,
- GPIO_TRST, GPIO_TRST);
- versaloon_interface.adaptors.swd.init(0);
- vsllink_swd_frequency(jtag_get_speed_khz() * 1000);
- vsllink_swd_switch_seq(JTAG_TO_SWD);
-
- } else {
- /* malloc buffer size for tap */
- tap_buffer_size = versaloon_interface.usb_setting.buf_size / 2 - 32;
- vsllink_free_buffer();
- tdi_buffer = malloc(tap_buffer_size);
- tdo_buffer = malloc(tap_buffer_size);
- tms_buffer = malloc(tap_buffer_size);
- if ((NULL == tdi_buffer) || (NULL == tdo_buffer) || (NULL == tms_buffer)) {
- vsllink_quit();
- return ERROR_FAIL;
- }
-
- versaloon_interface.adaptors.jtag_raw.init(0);
- versaloon_interface.adaptors.jtag_raw.config(0, jtag_get_speed_khz());
- versaloon_interface.adaptors.gpio.config(0, GPIO_SRST | GPIO_TRST,
- GPIO_TRST, GPIO_SRST, GPIO_SRST);
- }
-
- if (ERROR_OK != versaloon_interface.adaptors.peripheral_commit())
- return ERROR_FAIL;
-
- vsllink_reset(0, 0);
- vsllink_tap_init();
- return ERROR_OK;
- }
-
- /**************************************************************************
- * Queue command implementations */
-
- static void vsllink_end_state(tap_state_t state)
- {
- if (tap_is_state_stable(state))
- tap_set_end_state(state);
- else {
- LOG_ERROR("BUG: %i is not a valid end state", state);
- exit(-1);
- }
- }
-
- /* Goes to the end state. */
- static void vsllink_state_move(void)
- {
- int i;
- uint8_t tms_scan = tap_get_tms_path(tap_get_state(),
- tap_get_end_state());
- uint8_t tms_scan_bits = tap_get_tms_path_len(tap_get_state(),
- tap_get_end_state());
-
- for (i = 0; i < tms_scan_bits; i++)
- vsllink_tap_append_step((tms_scan >> i) & 1, 0);
-
- tap_set_state(tap_get_end_state());
- }
-
- static void vsllink_path_move(int num_states, tap_state_t *path)
- {
- for (int i = 0; i < num_states; i++) {
- if (path[i] == tap_state_transition(tap_get_state(), false))
- vsllink_tap_append_step(0, 0);
- else if (path[i] == tap_state_transition(tap_get_state(), true))
- vsllink_tap_append_step(1, 0);
- else {
- LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition",
- tap_state_name(tap_get_state()),
- tap_state_name(path[i]));
- exit(-1);
- }
-
- tap_set_state(path[i]);
- }
-
- tap_set_end_state(tap_get_state());
- }
-
- static void vsllink_tms(int num_bits, const uint8_t *bits)
- {
- for (int i = 0; i < num_bits; i++)
- vsllink_tap_append_step((bits[i / 8] >> (i % 8)) & 1, 0);
- }
-
- static void vsllink_stableclocks(int num_cycles, int tms)
- {
- while (num_cycles > 0) {
- vsllink_tap_append_step(tms, 0);
- num_cycles--;
- }
- }
-
- static void vsllink_runtest(int num_cycles)
- {
- tap_state_t saved_end_state = tap_get_end_state();
-
- if (tap_get_state() != TAP_IDLE) {
- /* enter IDLE state */
- vsllink_end_state(TAP_IDLE);
- vsllink_state_move();
- }
-
- vsllink_stableclocks(num_cycles, 0);
-
- /* post-process */
- /* set end_state */
- vsllink_end_state(saved_end_state);
- if (tap_get_end_state() != tap_get_end_state())
- vsllink_state_move();
- }
-
- static void vsllink_scan(bool ir_scan, enum scan_type type, uint8_t *buffer,
- int scan_size, struct scan_command *command)
- {
- tap_state_t saved_end_state;
-
- saved_end_state = tap_get_end_state();
-
- /* Move to appropriate scan state */
- vsllink_end_state(ir_scan ? TAP_IRSHIFT : TAP_DRSHIFT);
-
- if (tap_get_state() != tap_get_end_state())
- vsllink_state_move();
- vsllink_end_state(saved_end_state);
-
- /* Scan */
- vsllink_tap_append_scan(scan_size, buffer, command);
-
- /* Goto Pause and record position to insert tms:0 */
- vsllink_tap_append_step(0, 0);
- vsllink_tms_offset = tap_length;
-
- tap_set_state(ir_scan ? TAP_IRPAUSE : TAP_DRPAUSE);
-
- if (tap_get_state() != tap_get_end_state())
- vsllink_state_move();
- }
-
- static void vsllink_reset(int trst, int srst)
- {
- LOG_DEBUG("trst: %i, srst: %i", trst, srst);
-
- if (!srst)
- versaloon_interface.adaptors.gpio.config(0, GPIO_SRST, 0, GPIO_SRST, GPIO_SRST);
- else
- versaloon_interface.adaptors.gpio.config(0, GPIO_SRST, GPIO_SRST, 0, 0);
-
- if (!swd_mode) {
- if (!trst)
- versaloon_interface.adaptors.gpio.out(0, GPIO_TRST, GPIO_TRST);
- else
- versaloon_interface.adaptors.gpio.out(0, GPIO_TRST, 0);
- }
-
- versaloon_interface.adaptors.peripheral_commit();
- }
-
- COMMAND_HANDLER(vsllink_handle_usb_vid_command)
- {
- if (CMD_ARGC != 1)
- return ERROR_COMMAND_SYNTAX_ERROR;
-
- COMMAND_PARSE_NUMBER(u16, CMD_ARGV[0],
- versaloon_interface.usb_setting.vid);
- return ERROR_OK;
- }
-
- COMMAND_HANDLER(vsllink_handle_usb_pid_command)
- {
- if (CMD_ARGC != 1)
- return ERROR_COMMAND_SYNTAX_ERROR;
- COMMAND_PARSE_NUMBER(u16, CMD_ARGV[0],
- versaloon_interface.usb_setting.pid);
- return ERROR_OK;
- }
-
- COMMAND_HANDLER(vsllink_handle_usb_serial_command)
- {
- if (CMD_ARGC > 1)
- return ERROR_COMMAND_SYNTAX_ERROR;
-
- free(versaloon_interface.usb_setting.serialstring);
-
- if (CMD_ARGC == 1)
- versaloon_interface.usb_setting.serialstring = strdup(CMD_ARGV[0]);
- else
- versaloon_interface.usb_setting.serialstring = NULL;
-
- return ERROR_OK;
- }
-
- COMMAND_HANDLER(vsllink_handle_usb_bulkin_command)
- {
- if (CMD_ARGC != 1)
- return ERROR_COMMAND_SYNTAX_ERROR;
-
- COMMAND_PARSE_NUMBER(u8, CMD_ARGV[0],
- versaloon_interface.usb_setting.ep_in);
-
- versaloon_interface.usb_setting.ep_in |= 0x80;
-
- return ERROR_OK;
- }
-
- COMMAND_HANDLER(vsllink_handle_usb_bulkout_command)
- {
- if (CMD_ARGC != 1)
- return ERROR_COMMAND_SYNTAX_ERROR;
-
- COMMAND_PARSE_NUMBER(u8, CMD_ARGV[0],
- versaloon_interface.usb_setting.ep_out);
-
- versaloon_interface.usb_setting.ep_out &= ~0x80;
-
- return ERROR_OK;
- }
-
- COMMAND_HANDLER(vsllink_handle_usb_interface_command)
- {
- if (CMD_ARGC != 1)
- return ERROR_COMMAND_SYNTAX_ERROR;
-
- COMMAND_PARSE_NUMBER(u8, CMD_ARGV[0],
- versaloon_interface.usb_setting.interface);
- return ERROR_OK;
- }
-
- /**************************************************************************
- * VSLLink tap functions */
-
- static void vsllink_tap_init(void)
- {
- tap_length = 0;
- pending_scan_results_length = 0;
- vsllink_tms_offset = 0;
- }
-
- static void vsllink_tap_ensure_pending(int scans)
- {
- int available_scans =
- MAX_PENDING_SCAN_RESULTS - pending_scan_results_length;
-
- if (scans > available_scans)
- vsllink_tap_execute();
- }
-
- static void vsllink_tap_append_step(int tms, int tdi)
- {
- int index_var = tap_length / 8;
-
- int bit_index = tap_length % 8;
- uint8_t bit = 1 << bit_index;
-
- if (tms)
- tms_buffer[index_var] |= bit;
- else
- tms_buffer[index_var] &= ~bit;
-
- if (tdi)
- tdi_buffer[index_var] |= bit;
- else
- tdi_buffer[index_var] &= ~bit;
-
- tap_length++;
-
- if (tap_buffer_size * 8 <= tap_length)
- vsllink_tap_execute();
- }
-
- static void vsllink_tap_append_scan(int length, uint8_t *buffer,
- struct scan_command *command)
- {
- struct pending_scan_result *pending_scan_result;
- int len_tmp, len_all, i;
-
- len_all = 0;
- while (len_all < length) {
- vsllink_tap_ensure_pending(1);
- pending_scan_result =
- &pending_scan_results_buffer[
- pending_scan_results_length];
-
- if ((length - len_all) > (tap_buffer_size * 8 - tap_length)) {
- /* Use all memory available
- vsllink_tap_append_step will commit automatically */
- len_tmp = tap_buffer_size * 8 - tap_length;
- pending_scan_result->last = false;
- } else {
- len_tmp = length - len_all;
- pending_scan_result->last = true;
- }
- pending_scan_result->src_offset = tap_length;
- pending_scan_result->dest_offset = len_all;
- pending_scan_result->length = len_tmp;
- pending_scan_result->command = command;
- pending_scan_result->buffer = buffer;
- pending_scan_results_length++;
-
- for (i = 0; i < len_tmp; i++) {
- vsllink_tap_append_step(((len_all + i) < length-1
- ? 0 : 1),
- (buffer[(len_all + i)/8]
- >> ((len_all + i)%8)) & 1);
- }
-
- len_all += len_tmp;
- }
- }
-
- static int vsllink_jtag_execute(void)
- {
- int i;
- int result;
-
- if (tap_length <= 0)
- return ERROR_OK;
-
- versaloon_interface.adaptors.jtag_raw.execute(0, tdi_buffer, tms_buffer,
- tdo_buffer, tap_length);
-
- result = versaloon_interface.adaptors.peripheral_commit();
-
- if (result == ERROR_OK) {
- for (i = 0; i < pending_scan_results_length; i++) {
- struct pending_scan_result *pending_scan_result =
- &pending_scan_results_buffer[i];
- uint8_t *buffer = pending_scan_result->buffer;
- int length = pending_scan_result->length;
- int src_first = pending_scan_result->src_offset;
- int dest_first = pending_scan_result->dest_offset;
- bool last = pending_scan_result->last;
-
- struct scan_command *command;
-
- command = pending_scan_result->command;
- buf_set_buf(tdo_buffer, src_first, buffer, dest_first, length);
-
- #ifdef _DEBUG_JTAG_IO_
- DEBUG_JTAG_IO(
- "JTAG scan read(%d bits, from src %d bits to dest %d bits):",
- length, src_first, dest_first);
- vsllink_debug_buffer(buffer + dest_first / 8,
- DIV_ROUND_UP(length, 7));
- #endif
-
- if (last) {
- if (jtag_read_buffer(buffer, command)
- != ERROR_OK) {
- vsllink_tap_init();
- return ERROR_JTAG_QUEUE_FAILED;
- }
-
- if (pending_scan_result->buffer != NULL)
- free(pending_scan_result->buffer);
- }
- }
- } else {
- LOG_ERROR("vsllink_jtag_execute failure");
- return ERROR_JTAG_QUEUE_FAILED;
- }
-
- vsllink_tap_init();
-
- return ERROR_OK;
- }
-
- static int vsllink_tap_execute(void)
- {
- if (swd_mode)
- return ERROR_OK;
-
- return vsllink_jtag_execute();
- }
-
- static int vsllink_swd_init(void)
- {
- LOG_INFO("VSLLink SWD mode enabled");
- swd_mode = true;
-
- return ERROR_OK;
- }
-
- static int_least32_t vsllink_swd_frequency(int_least32_t hz)
- {
- const int_least32_t delay2hz[] = {
- 1850000, 235000, 130000, 102000, 85000, 72000
- };
-
- if (hz > 0) {
- uint16_t delay = UINT16_MAX;
-
- for (uint16_t i = 0; i < ARRAY_SIZE(delay2hz); i++) {
- if (hz >= delay2hz[i]) {
- hz = delay2hz[i];
- delay = i;
- break;
- }
- }
-
- if (delay == UINT16_MAX)
- delay = (500000 / hz) - 1;
-
- /* Calculate retry count after a WAIT response. This will give
- * a retry timeout at about ~250 ms. 54 is the number of bits
- * found in a transaction. */
- uint16_t retry_count = 250 * hz / 1000 / 54;
-
- LOG_DEBUG("SWD delay: %d, retry count: %d", delay, retry_count);
-
- versaloon_interface.adaptors.swd.config(0, 2, retry_count, delay);
- }
-
- return hz;
- }
-
- static int vsllink_swd_switch_seq(enum swd_special_seq seq)
- {
- switch (seq) {
- case LINE_RESET:
- LOG_DEBUG("SWD line reset");
- versaloon_interface.adaptors.swd.seqout(0, swd_seq_line_reset,
- swd_seq_line_reset_len);
- break;
- case JTAG_TO_SWD:
- LOG_DEBUG("JTAG-to-SWD");
- versaloon_interface.adaptors.swd.seqout(0, swd_seq_jtag_to_swd,
- swd_seq_jtag_to_swd_len);
- break;
- case SWD_TO_JTAG:
- LOG_DEBUG("SWD-to-JTAG");
- versaloon_interface.adaptors.swd.seqout(0, swd_seq_swd_to_jtag,
- swd_seq_swd_to_jtag_len);
- break;
- default:
- LOG_ERROR("Sequence %d not supported", seq);
- return ERROR_FAIL;
- }
-
- return ERROR_OK;
- }
-
- static void vsllink_swd_read_reg(uint8_t cmd, uint32_t *value, uint32_t ap_delay_clk)
- {
- versaloon_interface.adaptors.swd.transact(0, cmd, value, NULL);
- }
-
- static void vsllink_swd_write_reg(uint8_t cmd, uint32_t value, uint32_t ap_delay_clk)
- {
- versaloon_interface.adaptors.swd.transact(0, cmd, &value, NULL);
- }
-
- static int vsllink_swd_run_queue(void)
- {
- return versaloon_interface.adaptors.peripheral_commit();
- }
-
- /****************************************************************************
- * VSLLink USB low-level functions */
-
- static int vsllink_check_usb_strings(
- struct libusb_device_handle *usb_device_handle,
- struct libusb_device_descriptor *usb_desc)
- {
- char desc_string[256];
- int retval;
-
- if (NULL != versaloon_interface.usb_setting.serialstring) {
- retval = libusb_get_string_descriptor_ascii(usb_device_handle,
- usb_desc->iSerialNumber, (unsigned char *)desc_string,
- sizeof(desc_string));
- if (retval < 0)
- return ERROR_FAIL;
-
- if (strncmp(desc_string, versaloon_interface.usb_setting.serialstring,
- sizeof(desc_string)))
- return ERROR_FAIL;
- }
-
- retval = libusb_get_string_descriptor_ascii(usb_device_handle,
- usb_desc->iProduct, (unsigned char *)desc_string,
- sizeof(desc_string));
- if (retval < 0)
- return ERROR_FAIL;
-
- if (strstr(desc_string, "Versaloon") == NULL)
- return ERROR_FAIL;
-
- return ERROR_OK;
- }
-
- static int vsllink_usb_open(struct vsllink *vsllink)
- {
- ssize_t num_devices, i;
- libusb_device **usb_devices;
- struct libusb_device_descriptor usb_desc;
- struct libusb_device_handle *usb_device_handle;
- int retval;
-
- num_devices = libusb_get_device_list(vsllink->libusb_ctx, &usb_devices);
-
- if (num_devices <= 0)
- return ERROR_FAIL;
-
- for (i = 0; i < num_devices; i++) {
- libusb_device *device = usb_devices[i];
-
- retval = libusb_get_device_descriptor(device, &usb_desc);
- if (retval != 0)
- continue;
-
- if (usb_desc.idVendor != versaloon_interface.usb_setting.vid ||
- usb_desc.idProduct != versaloon_interface.usb_setting.pid)
- continue;
-
- retval = libusb_open(device, &usb_device_handle);
- if (retval != 0)
- continue;
-
- retval = vsllink_check_usb_strings(usb_device_handle, &usb_desc);
- if (ERROR_OK == retval)
- break;
-
- libusb_close(usb_device_handle);
- }
-
- libusb_free_device_list(usb_devices, 1);
-
- if (i == num_devices)
- return ERROR_FAIL;
-
- retval = libusb_claim_interface(usb_device_handle,
- versaloon_interface.usb_setting.interface);
- if (retval != 0) {
- LOG_ERROR("unable to claim interface");
- libusb_close(usb_device_handle);
- return ERROR_FAIL;
- }
-
- vsllink->usb_device_handle = usb_device_handle;
- return ERROR_OK;
- }
-
- static void vsllink_usb_close(struct vsllink *vsllink)
- {
- libusb_release_interface(vsllink->usb_device_handle,
- versaloon_interface.usb_setting.interface);
- libusb_close(vsllink->usb_device_handle);
- }
-
- #define BYTES_PER_LINE 16
-
- #if defined _DEBUG_JTAG_IO_
- static void vsllink_debug_buffer(uint8_t *buffer, int length)
- {
- char line[81];
- char s[4];
- int i;
- int j;
-
- for (i = 0; i < length; i += BYTES_PER_LINE) {
- snprintf(line, 5, "%04x", i);
- for (j = i; j < i + BYTES_PER_LINE && j < length; j++) {
- snprintf(s, 4, " %02x", buffer[j]);
- strcat(line, s);
- }
- LOG_DEBUG("%s", line);
- }
- }
- #endif /* _DEBUG_JTAG_IO_ */
-
- static const struct command_registration vsllink_command_handlers[] = {
- {
- .name = "vsllink_usb_vid",
- .handler = &vsllink_handle_usb_vid_command,
- .mode = COMMAND_CONFIG,
- },
- {
- .name = "vsllink_usb_pid",
- .handler = &vsllink_handle_usb_pid_command,
- .mode = COMMAND_CONFIG,
- },
- {
- .name = "vsllink_usb_serial",
- .handler = &vsllink_handle_usb_serial_command,
- .mode = COMMAND_CONFIG,
- },
- {
- .name = "vsllink_usb_bulkin",
- .handler = &vsllink_handle_usb_bulkin_command,
- .mode = COMMAND_CONFIG,
- },
- {
- .name = "vsllink_usb_bulkout",
- .handler = &vsllink_handle_usb_bulkout_command,
- .mode = COMMAND_CONFIG,
- },
- {
- .name = "vsllink_usb_interface",
- .handler = &vsllink_handle_usb_interface_command,
- .mode = COMMAND_CONFIG,
- },
- COMMAND_REGISTRATION_DONE
- };
-
- static const char * const vsllink_transports[] = {"jtag", "swd", NULL};
-
- static const struct swd_driver vsllink_swd_driver = {
- .init = vsllink_swd_init,
- .frequency = vsllink_swd_frequency,
- .switch_seq = vsllink_swd_switch_seq,
- .read_reg = vsllink_swd_read_reg,
- .write_reg = vsllink_swd_write_reg,
- .run = vsllink_swd_run_queue,
- };
-
- struct jtag_interface vsllink_interface = {
- .name = "vsllink",
- .supported = DEBUG_CAP_TMS_SEQ,
- .commands = vsllink_command_handlers,
- .transports = vsllink_transports,
- .swd = &vsllink_swd_driver,
-
- .init = vsllink_init,
- .quit = vsllink_quit,
- .khz = vsllink_khz,
- .speed = vsllink_speed,
- .speed_div = vsllink_speed_div,
- .execute_queue = vsllink_execute_queue,
- };
|