655 lines
16 KiB
C
655 lines
16 KiB
C
/***************************************************************************
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* Copyright (C) 2007 by Benedikt Sauter sauter@ixbat.de *
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* based on Dominic Rath's amt_jtagaccel.c *
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* *
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* usbprog is a free programming adapter. You can easily install *
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* different firmware versions from an "online pool" over USB. *
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* The adapter can be used for programming and debugging AVR and ARM *
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* processors, as USB to RS232 converter, as JTAG interface or as *
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* simple I/O interface (5 lines). *
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* *
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* http://www.embedded-projects.net/usbprog *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "replacements.h"
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#include "jtag.h"
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#include <usb.h>
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/* system includes */
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#include "log.h"
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#define VID 0x1781
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#define PID 0x0c62
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// Pins at usbprog
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#define TDO_BIT 0
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#define TDI_BIT 3
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#define TCK_BIT 2
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#define TMS_BIT 1
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int usbprog_execute_queue(void);
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int usbprog_speed(int speed);
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int usbprog_register_commands(struct command_context_s *cmd_ctx);
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int usbprog_init(void);
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int usbprog_quit(void);
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void usbprog_end_state(enum tap_state state);
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void usbprog_state_move(void);
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void usbprog_path_move(pathmove_command_t *cmd);
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void usbprog_runtest(int num_cycles);
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void usbprog_scan(int ir_scan, enum scan_type type, u8 *buffer, int scan_size);
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jtag_interface_t usbprog_interface =
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{
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.name = "usbprog",
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.execute_queue = usbprog_execute_queue,
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.support_pathmove = 0,
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.speed = usbprog_speed,
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.register_commands = usbprog_register_commands,
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.init = usbprog_init,
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.quit = usbprog_quit
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};
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#define UNKOWN_COMMAND 0x00
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#define PORT_DIRECTION 0x01
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#define PORT_SET 0x02
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#define PORT_GET 0x03
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#define PORT_SETBIT 0x04
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#define PORT_GETBIT 0x05
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#define WRITE_TDI 0x06
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#define READ_TDO 0x07
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#define WRITE_AND_READ 0x08
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#define WRITE_TMS 0x09
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#define WRITE_TMS_CHAIN 0x0A
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struct usbprog_jtag
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{
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struct usb_dev_handle* usb_handle;
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};
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struct usbprog_jtag * usbprog_jtag_handle;
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struct usbprog_jtag* usbprog_jtag_open();
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void usbprog_jtag_close(struct usbprog_jtag *usbprog_jtag);
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void usbprog_jtag_init(struct usbprog_jtag *usbprog_jtag);
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unsigned char usbprog_jtag_message(struct usbprog_jtag *usbprog_jtag, char *msg, int msglen);
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void usbprog_jtag_read_tdo(struct usbprog_jtag *usbprog_jtag, char * buffer, int size);
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void usbprog_jtag_write_tdi(struct usbprog_jtag *usbprog_jtag, char * buffer, int size);
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void usbprog_jtag_write_and_read(struct usbprog_jtag *usbprog_jtag, char * buffer, int size);
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void usbprog_jtag_write_tms(struct usbprog_jtag *usbprog_jtag, char tms_scan);
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char tms_chain[64];
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int tms_chain_index;
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void usbprog_jtag_tms_collect(char tms_scan);
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void usbprog_jtag_tms_send(struct usbprog_jtag *usbprog_jtag);
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void usbprog_write(int tck, int tms, int tdi);
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void usbprog_reset(int trst, int srst);
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void usbprog_jtag_set_direction(struct usbprog_jtag *usbprog_jtag, unsigned char direction);
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void usbprog_jtag_write_slice(struct usbprog_jtag *usbprog_jtag,unsigned char value);
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unsigned char usbprog_jtag_get_port(struct usbprog_jtag *usbprog_jtag);
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void usbprog_jtag_set_bit(struct usbprog_jtag *usbprog_jtag,int bit, int value);
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int usbprog_jtag_get_bit(struct usbprog_jtag *usbprog_jtag, int bit);
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int usbprog_speed(int speed)
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{
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return ERROR_OK;
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}
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int usbprog_register_commands(struct command_context_s *cmd_ctx)
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{
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return ERROR_OK;
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}
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int usbprog_execute_queue(void)
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{
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jtag_command_t *cmd = jtag_command_queue; /* currently processed command */
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int scan_size;
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enum scan_type type;
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u8 *buffer;
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while (cmd)
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{
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switch (cmd->type)
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{
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case JTAG_END_STATE:
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#ifdef _DEBUG_JTAG_IO_
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DEBUG("end_state: %i", cmd->cmd.end_state->end_state);
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#endif
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if (cmd->cmd.end_state->end_state != -1)
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usbprog_end_state(cmd->cmd.end_state->end_state);
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break;
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case JTAG_RESET:
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#ifdef _DEBUG_JTAG_IO_
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DEBUG("reset trst: %i srst %i", cmd->cmd.reset->trst, cmd->cmd.reset->srst);
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#endif
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if (cmd->cmd.reset->trst == 1)
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{
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cur_state = TAP_TLR;
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}
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usbprog_reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst);
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break;
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case JTAG_RUNTEST:
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#ifdef _DEBUG_JTAG_IO_
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DEBUG("runtest %i cycles, end in %i", cmd->cmd.runtest->num_cycles, cmd->cmd.runtest->end_state);
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#endif
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if (cmd->cmd.runtest->end_state != -1)
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usbprog_end_state(cmd->cmd.runtest->end_state);
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usbprog_runtest(cmd->cmd.runtest->num_cycles);
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break;
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case JTAG_STATEMOVE:
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#ifdef _DEBUG_JTAG_IO_
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DEBUG("statemove end in %i", cmd->cmd.statemove->end_state);
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#endif
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if (cmd->cmd.statemove->end_state != -1)
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usbprog_end_state(cmd->cmd.statemove->end_state);
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usbprog_state_move();
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break;
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case JTAG_PATHMOVE:
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#ifdef _DEBUG_JTAG_IO_
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DEBUG("pathmove: %i states, end in %i", cmd->cmd.pathmove->num_states,
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cmd->cmd.pathmove->path[cmd->cmd.pathmove->num_states - 1]);
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#endif
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usbprog_path_move(cmd->cmd.pathmove);
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break;
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case JTAG_SCAN:
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#ifdef _DEBUG_JTAG_IO_
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DEBUG("scan end in %i", cmd->cmd.scan->end_state);
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#endif
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if (cmd->cmd.scan->end_state != -1)
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usbprog_end_state(cmd->cmd.scan->end_state);
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scan_size = jtag_build_buffer(cmd->cmd.scan, &buffer);
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type = jtag_scan_type(cmd->cmd.scan);
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usbprog_scan(cmd->cmd.scan->ir_scan, type, buffer, scan_size);
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if (jtag_read_buffer(buffer, cmd->cmd.scan) != ERROR_OK)
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return ERROR_JTAG_QUEUE_FAILED;
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if (buffer)
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free(buffer);
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break;
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case JTAG_SLEEP:
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#ifdef _DEBUG_JTAG_IO_
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DEBUG("sleep %i", cmd->cmd.sleep->us);
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#endif
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jtag_sleep(cmd->cmd.sleep->us);
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break;
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default:
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ERROR("BUG: unknown JTAG command type encountered");
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exit(-1);
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}
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cmd = cmd->next;
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}
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return ERROR_OK;
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}
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int usbprog_init(void)
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{
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usbprog_jtag_handle = usbprog_jtag_open();
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tms_chain_index=0;
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if(usbprog_jtag_handle==0){
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ERROR("Can't find USB JTAG Interface! Please check connection and permissions.");
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return ERROR_JTAG_INIT_FAILED;
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}
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INFO("USB JTAG Interface ready!");
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usbprog_jtag_init(usbprog_jtag_handle);
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usbprog_reset(0, 0);
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usbprog_write(0, 0, 0);
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return ERROR_OK;
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}
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int usbprog_quit(void)
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{
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return ERROR_OK;
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}
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/*************** jtag execute commands **********************/
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void usbprog_end_state(enum tap_state state)
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{
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if (tap_move_map[state] != -1)
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end_state = state;
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else
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{
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ERROR("BUG: %i is not a valid end state", state);
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exit(-1);
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}
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}
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void usbprog_state_move(void) {
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int i=0, tms=0;
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u8 tms_scan = TAP_MOVE(cur_state, end_state);
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usbprog_jtag_write_tms(usbprog_jtag_handle,(char)tms_scan);
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for (i = 0; i < 7; i++)
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{
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tms = (tms_scan >> i) & 1;
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}
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cur_state = end_state;
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}
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void usbprog_path_move(pathmove_command_t *cmd)
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{
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int num_states = cmd->num_states;
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int state_count;
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state_count = 0;
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while (num_states)
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{
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if (tap_transitions[cur_state].low == cmd->path[state_count])
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{
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INFO("1");
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usbprog_write(0, 0, 0);
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usbprog_write(1, 0, 0);
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}
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else if (tap_transitions[cur_state].high == cmd->path[state_count])
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{
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INFO("2");
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usbprog_write(0, 1, 0);
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usbprog_write(1, 1, 0);
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}
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else
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{
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ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_strings[cur_state], tap_state_strings[cmd->path[state_count]]);
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exit(-1);
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}
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cur_state = cmd->path[state_count];
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state_count++;
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num_states--;
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}
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end_state = cur_state;
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}
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void usbprog_runtest(int num_cycles)
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{
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int i;
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/*
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enum tap_state saved_end_state = end_state;
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*/
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/* only do a state_move when we're not already in RTI */
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if (cur_state != TAP_RTI)
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{
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usbprog_end_state(TAP_RTI);
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usbprog_state_move();
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}
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/* execute num_cycles */
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if(num_cycles>0)
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{
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usbprog_write(0, 0, 0);
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}
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else {
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usbprog_jtag_tms_send(usbprog_jtag_handle);
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}
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for (i = 0; i < num_cycles; i++)
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{
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usbprog_write(1, 0, 0);
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usbprog_write(0, 0, 0);
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}
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/* finish in end_state */
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/*
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usbprog_end_state(saved_end_state);
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if (cur_state != end_state)
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usbprog_state_move();
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*/
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}
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void usbprog_scan(int ir_scan, enum scan_type type, u8 *buffer, int scan_size)
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{
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enum tap_state saved_end_state = end_state;
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if (ir_scan)
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usbprog_end_state(TAP_SI);
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else
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usbprog_end_state(TAP_SD);
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usbprog_state_move();
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usbprog_end_state(saved_end_state);
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usbprog_jtag_tms_send(usbprog_jtag_handle);
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if (type == SCAN_OUT) {
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usbprog_jtag_write_tdi(usbprog_jtag_handle, (char*)buffer, scan_size);
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}
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if (type == SCAN_IN) {
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usbprog_jtag_read_tdo(usbprog_jtag_handle, (char*)buffer, scan_size);
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}
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if (type == SCAN_IO) {
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usbprog_jtag_write_and_read(usbprog_jtag_handle, (char*)buffer, scan_size);
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}
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if (ir_scan)
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cur_state = TAP_PI;
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else
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cur_state = TAP_PD;
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if (cur_state != end_state)
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usbprog_state_move();
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}
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/*************** jtag wrapper functions *********************/
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void usbprog_write(int tck, int tms, int tdi)
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{
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unsigned char output_value=0x00;
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if (tms)
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output_value |= (1<<TMS_BIT);
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if (tdi)
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output_value |= (1<<TDI_BIT);
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if (tck)
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output_value |= (1<<TCK_BIT);
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usbprog_jtag_write_slice(usbprog_jtag_handle,output_value);
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}
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/* (1) assert or (0) deassert reset lines */
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void usbprog_reset(int trst, int srst)
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{
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DEBUG("trst: %i, srst: %i", trst, srst);
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if(trst)
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usbprog_jtag_set_bit(usbprog_jtag_handle,5,0);
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else
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usbprog_jtag_set_bit(usbprog_jtag_handle,5,1);
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if(srst)
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usbprog_jtag_set_bit(usbprog_jtag_handle,4,0);
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else
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usbprog_jtag_set_bit(usbprog_jtag_handle,4,1);
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}
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/*************** jtag lowlevel functions ********************/
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struct usbprog_jtag* usbprog_jtag_open()
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{
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struct usb_bus *busses;
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struct usb_bus *bus;
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struct usb_device *dev;
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struct usbprog_jtag * tmp;
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tmp = (struct usbprog_jtag*)malloc(sizeof(struct usbprog_jtag));
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usb_init();
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usb_find_busses();
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usb_find_devices();
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busses = usb_get_busses();
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/* find usbprog_jtag device in usb bus */
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for (bus = busses; bus; bus = bus->next){
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for (dev = bus->devices; dev; dev = dev->next){
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/* condition for sucessfully hit (too bad, I only check the vendor id)*/
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if (dev->descriptor.idVendor == VID && dev->descriptor.idProduct == PID) {
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tmp->usb_handle = usb_open(dev);
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usb_set_configuration (tmp->usb_handle,dev->config[0].bConfigurationValue);
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usb_claim_interface(tmp->usb_handle, 0);
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usb_set_altinterface(tmp->usb_handle,0);
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return tmp;
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}
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}
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}
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return 0;
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}
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void usbprog_jtag_close(struct usbprog_jtag *usbprog_jtag)
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{
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usb_close(usbprog_jtag->usb_handle);
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free(usbprog_jtag);
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}
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unsigned char usbprog_jtag_message(struct usbprog_jtag *usbprog_jtag, char *msg, int msglen)
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{
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int res = usb_bulk_write(usbprog_jtag->usb_handle,3,msg,msglen,100);
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if(msg[0]==2)
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return 1;
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if(res == msglen) {
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res = usb_bulk_read(usbprog_jtag->usb_handle,0x82, msg, 2, 100);
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if (res > 0)
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return (unsigned char)msg[1];
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else
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return -1;
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}
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else
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return -1;
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return 0;
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}
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void usbprog_jtag_init(struct usbprog_jtag *usbprog_jtag)
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{
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usbprog_jtag_set_direction(usbprog_jtag, 0xFE);
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}
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void usbprog_jtag_write_and_read(struct usbprog_jtag *usbprog_jtag, char * buffer, int size)
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{
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char tmp[64]; // fastes packet size for usb controller
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int send_bits, bufindex = 0, fillindex = 0, i, loops;
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char swap;
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// 61 byte can be transfered (488 bit)
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while(size > 0) {
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if(size > 488) {
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send_bits = 488;
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size = size - 488;
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loops = 61;
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} else {
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send_bits = size;
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loops = size/8;
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loops++;
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size = 0;
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}
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tmp[0] = WRITE_AND_READ;
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tmp[1] = (char)(send_bits>>8); // high
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tmp[2] = (char)(send_bits); // low
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i=0;
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for(i=0;i < loops ;i++) {
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tmp[3+i]=buffer[bufindex];
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bufindex++;
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}
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usb_bulk_write(usbprog_jtag->usb_handle,3,tmp,64,1000);
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while(usb_bulk_read(usbprog_jtag->usb_handle,0x82, tmp, 64, 1000) < 1);
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for(i=0;i<loops ;i++) {
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swap = tmp[3+i];
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buffer[fillindex++] = swap;
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}
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}
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}
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void usbprog_jtag_read_tdo(struct usbprog_jtag *usbprog_jtag, char * buffer, int size)
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{
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char tmp[64]; // fastes packet size for usb controller
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int send_bits, fillindex = 0, i, loops;
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char swap;
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// 61 byte can be transfered (488 bit)
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|
|
|
while(size > 0) {
|
|
if(size > 488) {
|
|
send_bits = 488;
|
|
size = size - 488;
|
|
loops = 61;
|
|
} else {
|
|
send_bits = size;
|
|
loops = size/8;
|
|
loops++;
|
|
size = 0;
|
|
}
|
|
tmp[0] = WRITE_AND_READ;
|
|
tmp[1] = (char)(send_bits>>8); // high
|
|
tmp[2] = (char)(send_bits); // low
|
|
|
|
usb_bulk_write(usbprog_jtag->usb_handle,3,tmp,3,1000);
|
|
|
|
while(usb_bulk_read(usbprog_jtag->usb_handle,0x82, tmp, 64, 10) < 1);
|
|
|
|
for(i=0;i<loops ;i++) {
|
|
swap = tmp[3+i];
|
|
buffer[fillindex++] = swap;
|
|
}
|
|
}
|
|
}
|
|
|
|
void usbprog_jtag_write_tdi(struct usbprog_jtag *usbprog_jtag, char * buffer, int size)
|
|
{
|
|
char tmp[64]; /* fastes packet size for usb controller */
|
|
int send_bits, bufindex = 0, i, loops;
|
|
|
|
/* 61 byte can be transfered (488 bit) */
|
|
while(size > 0) {
|
|
if(size > 488) {
|
|
send_bits = 488;
|
|
size = size - 488;
|
|
loops = 61;
|
|
} else {
|
|
send_bits = size;
|
|
loops = size/8;
|
|
/*if(loops==0)*/
|
|
loops++;
|
|
size = 0;
|
|
}
|
|
tmp[0] = WRITE_TDI;
|
|
tmp[1] = (char)(send_bits>>8); /* high */
|
|
tmp[2] = (char)(send_bits); /* low */
|
|
i=0;
|
|
|
|
for(i=0;i < loops ;i++) {
|
|
tmp[3+i]=buffer[bufindex];
|
|
bufindex++;
|
|
}
|
|
usb_bulk_write(usbprog_jtag->usb_handle,3,tmp,64,1000);
|
|
}
|
|
}
|
|
|
|
|
|
void usbprog_jtag_write_tms(struct usbprog_jtag *usbprog_jtag, char tms_scan)
|
|
{
|
|
usbprog_jtag_tms_collect(tms_scan);
|
|
}
|
|
|
|
|
|
void usbprog_jtag_set_direction(struct usbprog_jtag *usbprog_jtag, unsigned char direction)
|
|
{
|
|
char tmp[2];
|
|
tmp[0] = PORT_DIRECTION;
|
|
tmp[1] = (char)direction;
|
|
usbprog_jtag_message(usbprog_jtag,tmp,2);
|
|
}
|
|
|
|
void usbprog_jtag_write_slice(struct usbprog_jtag *usbprog_jtag,unsigned char value)
|
|
{
|
|
char tmp[2];
|
|
tmp[0] = PORT_SET;
|
|
tmp[1] = (char)value;
|
|
usbprog_jtag_message(usbprog_jtag,tmp,2);
|
|
}
|
|
|
|
unsigned char usbprog_jtag_get_port(struct usbprog_jtag *usbprog_jtag)
|
|
{
|
|
char tmp[2];
|
|
tmp[0] = PORT_GET;
|
|
tmp[1] = 0x00;
|
|
return usbprog_jtag_message(usbprog_jtag,tmp,2);
|
|
}
|
|
|
|
|
|
void usbprog_jtag_set_bit(struct usbprog_jtag *usbprog_jtag,int bit, int value)
|
|
{
|
|
char tmp[3];
|
|
tmp[0] = PORT_SETBIT;
|
|
tmp[1] = (char)bit;
|
|
if(value==1)
|
|
tmp[2] = 0x01;
|
|
else
|
|
tmp[2] = 0x00;
|
|
usbprog_jtag_message(usbprog_jtag,tmp,3);
|
|
}
|
|
|
|
int usbprog_jtag_get_bit(struct usbprog_jtag *usbprog_jtag, int bit)
|
|
{
|
|
char tmp[2];
|
|
tmp[0] = PORT_GETBIT;
|
|
tmp[1] = (char)bit;
|
|
|
|
if(usbprog_jtag_message(usbprog_jtag,tmp,2)>0)
|
|
return 1;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
void usbprog_jtag_tms_collect(char tms_scan){
|
|
tms_chain[tms_chain_index]=tms_scan;
|
|
tms_chain_index++;
|
|
}
|
|
|
|
void usbprog_jtag_tms_send(struct usbprog_jtag *usbprog_jtag){
|
|
int i;
|
|
if(tms_chain_index>0) {
|
|
char tmp[tms_chain_index+2];
|
|
tmp[0] = WRITE_TMS_CHAIN;
|
|
tmp[1] = (char)(tms_chain_index);
|
|
for(i=0;i<tms_chain_index+1;i++)
|
|
tmp[2+i] = tms_chain[i];
|
|
usb_bulk_write(usbprog_jtag->usb_handle,3,tmp,tms_chain_index+2,1000);
|
|
tms_chain_index=0;
|
|
}
|
|
}
|
|
|