353695582f
Avoids "J-Link hw type unknown 0x11" on various Infineon boards. Change-Id: If20b9e21110d2acc02be57f5faf28c5e6a39e2c9 Signed-off-by: Andreas Färber <afaerber@suse.de> Reviewed-on: http://openocd.zylin.com/2565 Tested-by: jenkins Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
1993 lines
52 KiB
C
1993 lines
52 KiB
C
/***************************************************************************
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* Copyright (C) 2007 by Juergen Stuber <juergen@jstuber.net> *
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* based on Dominic Rath's and Benedikt Sauter's usbprog.c *
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* *
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* Copyright (C) 2008 by Spencer Oliver *
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* spen@spen-soft.co.uk *
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* *
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* Copyright (C) 2011 by Jean-Christophe PLAGNIOL-VIILARD *
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* plagnioj@jcrosoft.com *
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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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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 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 <jtag/interface.h>
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#include <jtag/swd.h>
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#include <jtag/commands.h>
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#include "libusb_common.h"
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/* See Segger's public documentation:
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* Reference manual for J-Link USB Protocol
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* Document RM08001-R6 Date: June 16, 2009
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* (Or newer, with some SWD information).
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* http://www.segger.com/cms/admin/uploads/productDocs/RM08001_JLinkUSBProtocol.pdf
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*/
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/*
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* The default pid of the segger is 0x0101
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* But when you change the USB Address it will also
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*
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* pid = ( usb_address > 0x4) ? 0x0101 : (0x101 + usb_address)
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*/
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#define JLINK_USB_INTERFACE_CLASS 0xff
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#define JLINK_USB_INTERFACE_SUBCLASS 0xff
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#define JLINK_USB_INTERFACE_PROTOCOL 0xff
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static unsigned int jlink_write_ep;
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static unsigned int jlink_read_ep;
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static unsigned int jlink_hw_jtag_version = 2;
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#define JLINK_USB_TIMEOUT 1000
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/* See Section 3.3.2 of the Segger JLink USB protocol manual */
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/* 2048 is the max value we can use here */
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#define JLINK_TAP_BUFFER_SIZE 2048
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/*#define JLINK_TAP_BUFFER_SIZE 256*/
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/*#define JLINK_TAP_BUFFER_SIZE 384*/
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#define JLINK_IN_BUFFER_SIZE (2048 + 1)
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#define JLINK_OUT_BUFFER_SIZE (2*2048 + 4)
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/* Global USB buffers */
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static uint8_t usb_in_buffer[JLINK_IN_BUFFER_SIZE];
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static uint8_t usb_out_buffer[JLINK_OUT_BUFFER_SIZE];
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/* Constants for JLink command */
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#define EMU_CMD_VERSION 0x01
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#define EMU_CMD_RESET_TRST 0x02
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#define EMU_CMD_RESET_TARGET 0x03
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#define EMU_CMD_SET_SPEED 0x05
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#define EMU_CMD_GET_STATE 0x07
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#define EMU_CMD_SET_KS_POWER 0x08
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#define EMU_CMD_REGISTER 0x09
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#define EMU_CMD_GET_SPEEDS 0xc0
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#define EMU_CMD_GET_HW_INFO 0xc1
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#define EMU_CMD_GET_COUNTERS 0xc2
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#define EMU_CMD_SELECT_IF 0xc7
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#define EMU_CMD_HW_CLOCK 0xc8
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#define EMU_CMD_HW_TMS0 0xc9
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#define EMU_CMD_HW_TMS1 0xca
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#define EMU_CMD_HW_DATA0 0xcb
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#define EMU_CMD_HW_DATA1 0xcc
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#define EMU_CMD_HW_JTAG 0xcd
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#define EMU_CMD_HW_JTAG2 0xce
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#define EMU_CMD_HW_JTAG3 0xcf
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#define EMU_CMD_HW_RELEASE_RESET_STOP_EX 0xd0
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#define EMU_CMD_HW_RELEASE_RESET_STOP_TIMED 0xd1
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#define EMU_CMD_GET_MAX_MEM_BLOCK 0xd4
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#define EMU_CMD_HW_JTAG_WRITE 0xd5
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#define EMU_CMD_HW_JTAG_GET_RESULT 0xd6
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#define EMU_CMD_HW_RESET0 0xdc
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#define EMU_CMD_HW_RESET1 0xdd
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#define EMU_CMD_HW_TRST0 0xde
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#define EMU_CMD_HW_TRST1 0xdf
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#define EMU_CMD_GET_CAPS 0xe8
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#define EMU_CMD_GET_CPU_CAPS 0xe9
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#define EMU_CMD_EXEC_CPU_CMD 0xea
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#define EMU_CMD_GET_CAPS_EX 0xed
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#define EMU_CMD_GET_HW_VERSION 0xf0
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#define EMU_CMD_WRITE_DCC 0xf1
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#define EMU_CMD_READ_CONFIG 0xf2
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#define EMU_CMD_WRITE_CONFIG 0xf3
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#define EMU_CMD_WRITE_MEM 0xf4
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#define EMU_CMD_READ_MEM 0xf5
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#define EMU_CMD_MEASURE_RTCK_REACT 0xf6
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#define EMU_CMD_WRITE_MEM_ARM79 0xf7
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#define EMU_CMD_READ_MEM_ARM79 0xf8
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/* Register subcommands */
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#define REG_CMD_REGISTER 100
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#define REG_CMD_UNREGISTER 101
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/* bits return from EMU_CMD_GET_CAPS */
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#define EMU_CAP_RESERVED_1 0
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#define EMU_CAP_GET_HW_VERSION 1
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#define EMU_CAP_WRITE_DCC 2
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#define EMU_CAP_ADAPTIVE_CLOCKING 3
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#define EMU_CAP_READ_CONFIG 4
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#define EMU_CAP_WRITE_CONFIG 5
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#define EMU_CAP_TRACE 6
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#define EMU_CAP_WRITE_MEM 7
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#define EMU_CAP_READ_MEM 8
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#define EMU_CAP_SPEED_INFO 9
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#define EMU_CAP_EXEC_CODE 10
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#define EMU_CAP_GET_MAX_BLOCK_SIZE 11
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#define EMU_CAP_GET_HW_INFO 12
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#define EMU_CAP_SET_KS_POWER 13
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#define EMU_CAP_RESET_STOP_TIMED 14
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#define EMU_CAP_RESERVED_2 15
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#define EMU_CAP_MEASURE_RTCK_REACT 16
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#define EMU_CAP_SELECT_IF 17
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#define EMU_CAP_RW_MEM_ARM79 18
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#define EMU_CAP_GET_COUNTERS 19
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#define EMU_CAP_READ_DCC 20
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#define EMU_CAP_GET_CPU_CAPS 21
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#define EMU_CAP_EXEC_CPU_CMD 22
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#define EMU_CAP_SWO 23
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#define EMU_CAP_WRITE_DCC_EX 24
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#define EMU_CAP_UPDATE_FIRMWARE_EX 25
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#define EMU_CAP_FILE_IO 26
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#define EMU_CAP_REGISTER 27
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#define EMU_CAP_INDICATORS 28
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#define EMU_CAP_TEST_NET_SPEED 29
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#define EMU_CAP_RAWTRACE 30
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#define EMU_CAP_RESERVED_3 31
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static const char * const jlink_cap_str[] = {
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"Always 1.",
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"Supports command EMU_CMD_GET_HARDWARE_VERSION",
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"Supports command EMU_CMD_WRITE_DCC",
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"Supports adaptive clocking",
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"Supports command EMU_CMD_READ_CONFIG",
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"Supports command EMU_CMD_WRITE_CONFIG",
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"Supports trace commands",
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"Supports command EMU_CMD_WRITE_MEM",
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"Supports command EMU_CMD_READ_MEM",
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"Supports command EMU_CMD_GET_SPEED",
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"Supports command EMU_CMD_CODE_...",
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"Supports command EMU_CMD_GET_MAX_BLOCK_SIZE",
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"Supports command EMU_CMD_GET_HW_INFO",
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"Supports command EMU_CMD_SET_KS_POWER",
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"Supports command EMU_CMD_HW_RELEASE_RESET_STOP_TIMED",
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"Reserved",
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"Supports command EMU_CMD_MEASURE_RTCK_REACT",
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"Supports command EMU_CMD_HW_SELECT_IF",
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"Supports command EMU_CMD_READ/WRITE_MEM_ARM79",
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"Supports command EMU_CMD_GET_COUNTERS",
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"Supports command EMU_CMD_READ_DCC",
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"Supports command EMU_CMD_GET_CPU_CAPS",
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"Supports command EMU_CMD_EXEC_CPU_CMD",
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"Supports command EMU_CMD_SWO",
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"Supports command EMU_CMD_WRITE_DCC_EX",
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"Supports command EMU_CMD_UPDATE_FIRMWARE_EX",
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"Supports command EMU_CMD_FILE_IO",
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"Supports command EMU_CMD_REGISTER",
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"Supports command EMU_CMD_INDICATORS",
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"Supports command EMU_CMD_TEST_NET_SPEED",
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"Supports command EMU_CMD_RAWTRACE",
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"Reserved",
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};
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/* max speed 12MHz v5.0 jlink */
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#define JLINK_MAX_SPEED 12000
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/* J-Link hardware versions */
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#define JLINK_HW_TYPE_JLINK 0
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#define JLINK_HW_TYPE_JTRACE 1
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#define JLINK_HW_TYPE_FLASHER 2
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#define JLINK_HW_TYPE_JLINK_PRO 3
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#define JLINK_HW_TYPE_JLINK_LITE_ADI 5
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#define JLINK_HW_TYPE_JLINK_LITE_XMC4200 17
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#define JLINK_HW_TYPE_LPCLINK2 18
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/* Interface selection */
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#define JLINK_TIF_JTAG 0
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#define JLINK_TIF_SWD 1
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#define JLINK_SWD_DIR_IN 0
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#define JLINK_SWD_DIR_OUT 1
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/* Queue command functions */
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static void jlink_end_state(tap_state_t state);
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static void jlink_state_move(void);
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static void jlink_path_move(int num_states, tap_state_t *path);
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static void jlink_runtest(int num_cycles);
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static void jlink_scan(bool ir_scan, enum scan_type type, uint8_t *buffer,
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int scan_size, struct scan_command *command);
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static void jlink_reset(int trst, int srst);
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static void jlink_simple_command(uint8_t command);
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static int jlink_get_status(void);
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static int jlink_swd_run_queue(struct adiv5_dap *dap);
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static void jlink_swd_queue_cmd(struct adiv5_dap *dap, uint8_t cmd, uint32_t *dst, uint32_t data);
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static int jlink_swd_switch_seq(struct adiv5_dap *dap, enum swd_special_seq seq);
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/* J-Link tap buffer functions */
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static void jlink_tap_init(void);
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static int jlink_tap_execute(void);
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static void jlink_tap_ensure_space(int scans, int bits);
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static void jlink_tap_append_step(int tms, int tdi);
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static void jlink_tap_append_scan(int length, uint8_t *buffer,
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struct scan_command *command);
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/* Jlink lowlevel functions */
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struct jlink {
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struct jtag_libusb_device_handle *usb_handle;
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};
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static struct jlink *jlink_usb_open(void);
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static void jlink_usb_close(struct jlink *jlink);
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static int jlink_usb_message(struct jlink *jlink, int out_length, int in_length);
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static int jlink_usb_io(struct jlink *jlink, int out_length, int in_length);
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static int jlink_usb_write(struct jlink *jlink, int out_length);
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static int jlink_usb_read(struct jlink *jlink, int expected_size);
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/* helper functions */
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static int jlink_get_version_info(void);
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#ifdef _DEBUG_USB_COMMS_
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static void jlink_debug_buffer(uint8_t *buffer, int length);
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#else
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static inline void jlink_debug_buffer(uint8_t *buffer, int length)
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{
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}
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#endif
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static enum tap_state jlink_last_state = TAP_RESET;
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static struct jlink *jlink_handle;
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/* pid could be specified at runtime */
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static uint16_t vids[] = { 0x1366, 0x1366, 0x1366, 0x1366, 0x1366, 0 };
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static uint16_t pids[] = { 0x0101, 0x0102, 0x0103, 0x0104, 0x0105, 0 };
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static char *jlink_serial;
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static uint32_t jlink_caps;
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static uint32_t jlink_hw_type;
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static int queued_retval;
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static bool swd_mode;
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/* 256 byte non-volatile memory */
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struct jlink_config {
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uint8_t usb_address;
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/* 0ffset 0x01 to 0x03 */
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uint8_t reserved_1[3];
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uint32_t kickstart_power_on_jtag_pin_19;
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/* 0ffset 0x08 to 0x1f */
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uint8_t reserved_2[24];
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/* IP only for J-Link Pro */
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uint8_t ip_address[4];
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uint8_t subnet_mask[4];
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/* 0ffset 0x28 to 0x2f */
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uint8_t reserved_3[8];
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uint8_t mac_address[6];
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/* 0ffset 0x36 to 0xff */
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uint8_t reserved_4[202];
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} __attribute__ ((packed));
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struct jlink_config jlink_cfg;
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/***************************************************************************/
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/* External interface implementation */
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static void jlink_execute_runtest(struct jtag_command *cmd)
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{
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DEBUG_JTAG_IO("runtest %i cycles, end in %i",
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cmd->cmd.runtest->num_cycles,
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cmd->cmd.runtest->end_state);
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jlink_end_state(cmd->cmd.runtest->end_state);
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jlink_runtest(cmd->cmd.runtest->num_cycles);
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}
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static void jlink_execute_statemove(struct jtag_command *cmd)
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{
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DEBUG_JTAG_IO("statemove end in %i", cmd->cmd.statemove->end_state);
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jlink_end_state(cmd->cmd.statemove->end_state);
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jlink_state_move();
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}
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static void jlink_execute_pathmove(struct jtag_command *cmd)
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{
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DEBUG_JTAG_IO("pathmove: %i states, end in %i",
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cmd->cmd.pathmove->num_states,
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cmd->cmd.pathmove->path[cmd->cmd.pathmove->num_states - 1]);
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jlink_path_move(cmd->cmd.pathmove->num_states,
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cmd->cmd.pathmove->path);
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}
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static void jlink_execute_scan(struct jtag_command *cmd)
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{
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int scan_size;
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enum scan_type type;
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uint8_t *buffer;
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DEBUG_JTAG_IO("scan end in %s", tap_state_name(cmd->cmd.scan->end_state));
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jlink_end_state(cmd->cmd.scan->end_state);
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scan_size = jtag_build_buffer(cmd->cmd.scan, &buffer);
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DEBUG_JTAG_IO("scan input, length = %d", scan_size);
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jlink_debug_buffer(buffer, (scan_size + 7) / 8);
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type = jtag_scan_type(cmd->cmd.scan);
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jlink_scan(cmd->cmd.scan->ir_scan,
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type, buffer, scan_size, cmd->cmd.scan);
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}
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static void jlink_execute_reset(struct jtag_command *cmd)
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{
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DEBUG_JTAG_IO("reset trst: %i srst %i",
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cmd->cmd.reset->trst, cmd->cmd.reset->srst);
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jlink_tap_execute();
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jlink_reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst);
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jlink_tap_execute();
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}
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static void jlink_execute_sleep(struct jtag_command *cmd)
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{
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DEBUG_JTAG_IO("sleep %" PRIi32 "", cmd->cmd.sleep->us);
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jlink_tap_execute();
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jtag_sleep(cmd->cmd.sleep->us);
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}
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static void jlink_execute_command(struct jtag_command *cmd)
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{
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switch (cmd->type) {
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case JTAG_RUNTEST:
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jlink_execute_runtest(cmd);
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break;
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case JTAG_TLR_RESET:
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jlink_execute_statemove(cmd);
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break;
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case JTAG_PATHMOVE:
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jlink_execute_pathmove(cmd);
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break;
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case JTAG_SCAN:
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jlink_execute_scan(cmd);
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break;
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case JTAG_RESET:
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jlink_execute_reset(cmd);
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break;
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case JTAG_SLEEP:
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jlink_execute_sleep(cmd);
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break;
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default:
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LOG_ERROR("BUG: unknown JTAG command type encountered");
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exit(-1);
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}
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}
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static int jlink_execute_queue(void)
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{
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struct jtag_command *cmd = jtag_command_queue;
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while (cmd != NULL) {
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jlink_execute_command(cmd);
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cmd = cmd->next;
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}
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return jlink_tap_execute();
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}
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/* Sets speed in kHz. */
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static int jlink_speed(int speed)
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{
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int result;
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if (speed > JLINK_MAX_SPEED) {
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LOG_INFO("reduce speed request: %dkHz to %dkHz maximum",
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speed, JLINK_MAX_SPEED);
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speed = JLINK_MAX_SPEED;
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}
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/* check for RTCK setting */
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if (speed == 0)
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speed = -1;
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usb_out_buffer[0] = EMU_CMD_SET_SPEED;
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usb_out_buffer[1] = (speed >> 0) & 0xff;
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usb_out_buffer[2] = (speed >> 8) & 0xff;
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result = jlink_usb_write(jlink_handle, 3);
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if (result != 3) {
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LOG_ERROR("J-Link setting speed failed (%d)", result);
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return ERROR_JTAG_DEVICE_ERROR;
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}
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return ERROR_OK;
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}
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static int jlink_speed_div(int speed, int *khz)
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{
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*khz = speed;
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return ERROR_OK;
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}
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static int jlink_khz(int khz, int *jtag_speed)
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{
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*jtag_speed = khz;
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return ERROR_OK;
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}
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static int jlink_register(void)
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{
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int result;
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usb_out_buffer[0] = EMU_CMD_REGISTER;
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usb_out_buffer[1] = REG_CMD_REGISTER;
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/* 2 - 11 is "additional parameter",
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* 12 - 13 is connection handle, zero initially */
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memset(&usb_out_buffer[2], 0, 10 + 2);
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result = jlink_usb_write(jlink_handle, 14);
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if (result != 14) {
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LOG_ERROR("J-Link register write failed (%d)", result);
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return ERROR_JTAG_DEVICE_ERROR;
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}
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/* Returns:
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* 0 - 1 connection handle,
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* 2 - 3 number of information entities,
|
|
* 4 - 5 size of a single information struct,
|
|
* 6 - 7 number of additional bytes,
|
|
* 8 - ... reply data
|
|
*
|
|
* Try to read the whole USB bulk packet
|
|
*/
|
|
result = jtag_libusb_bulk_read(jlink_handle->usb_handle, jlink_read_ep,
|
|
(char *)usb_in_buffer, sizeof(usb_in_buffer),
|
|
JLINK_USB_TIMEOUT);
|
|
if (!result) {
|
|
LOG_ERROR("J-Link register read failed (0 bytes received)");
|
|
return ERROR_JTAG_DEVICE_ERROR;
|
|
}
|
|
|
|
return ERROR_OK;
|
|
}
|
|
|
|
/*
|
|
* select transport interface
|
|
*
|
|
* @param iface [0..31] currently: 0=JTAG, 1=SWD
|
|
* @returns ERROR_OK or ERROR_ code
|
|
*
|
|
* @pre jlink_handle must be opened
|
|
* @pre function may be called only for devices, that have
|
|
* EMU_CAP_SELECT_IF capability enabled
|
|
*/
|
|
static int jlink_select_interface(int iface)
|
|
{
|
|
/* According to Segger's document RM08001-R7 Date: October 8, 2010,
|
|
* http://www.segger.com/admin/uploads/productDocs/RM08001_JLinkUSBProtocol.pdf
|
|
* section 5.5.3 EMU_CMD_SELECT_IF
|
|
* > SubCmd 1..31 to select interface (0..31)
|
|
*
|
|
* The table below states:
|
|
* 0 TIF_JTAG
|
|
* 1 TIF_SWD
|
|
*
|
|
* This obviosly means that to select TIF_JTAG one should write SubCmd = 1.
|
|
*
|
|
* In fact, JTAG interface operates when SubCmd=0
|
|
*
|
|
* It looks like a typo in documentation, because interfaces 0..31 could not
|
|
* be selected by 1..31 range command.
|
|
*/
|
|
assert(iface >= 0 && iface < 32);
|
|
int result;
|
|
|
|
/* get available interfaces */
|
|
usb_out_buffer[0] = EMU_CMD_SELECT_IF;
|
|
usb_out_buffer[1] = 0xff;
|
|
|
|
result = jlink_usb_io(jlink_handle, 2, 4);
|
|
if (result != ERROR_OK) {
|
|
LOG_ERROR("J-Link query interface failed (%d)", result);
|
|
return ERROR_JTAG_DEVICE_ERROR;
|
|
}
|
|
|
|
uint32_t iface_mask = buf_get_u32(usb_in_buffer, 0, 32);
|
|
|
|
if (!(iface_mask & (1<<iface))) {
|
|
LOG_ERROR("J-Link requesting to select unsupported interface (%" PRIx32 ")", iface_mask);
|
|
return ERROR_JTAG_DEVICE_ERROR;
|
|
}
|
|
|
|
/* Select interface */
|
|
usb_out_buffer[0] = EMU_CMD_SELECT_IF;
|
|
usb_out_buffer[1] = iface;
|
|
|
|
result = jlink_usb_io(jlink_handle, 2, 4);
|
|
if (result != ERROR_OK) {
|
|
LOG_ERROR("J-Link interface select failed (%d)", result);
|
|
return ERROR_JTAG_DEVICE_ERROR;
|
|
}
|
|
|
|
return ERROR_OK;
|
|
}
|
|
|
|
static int jlink_init(void)
|
|
{
|
|
int i;
|
|
|
|
jlink_handle = jlink_usb_open();
|
|
|
|
if (jlink_handle == 0) {
|
|
LOG_ERROR("Cannot find jlink Interface! Please check "
|
|
"connection and permissions.");
|
|
return ERROR_JTAG_INIT_FAILED;
|
|
}
|
|
|
|
jlink_hw_jtag_version = 2;
|
|
|
|
if (jlink_get_version_info() == ERROR_OK) {
|
|
/* attempt to get status */
|
|
jlink_get_status();
|
|
}
|
|
|
|
/* Registration is sometimes necessary for SWD to work */
|
|
if (jlink_caps & (1<<EMU_CAP_REGISTER))
|
|
jlink_register();
|
|
|
|
/*
|
|
* Some versions of Segger's software do not select JTAG interface by default.
|
|
*
|
|
* Segger recommends to select interface necessarily as a part of init process,
|
|
* in case any previous session leaves improper interface selected.
|
|
*/
|
|
int retval;
|
|
if (jlink_caps & (1<<EMU_CAP_SELECT_IF))
|
|
retval = jlink_select_interface(swd_mode ? JLINK_TIF_SWD : JLINK_TIF_JTAG);
|
|
else
|
|
retval = swd_mode ? ERROR_JTAG_DEVICE_ERROR : ERROR_OK;
|
|
|
|
if (retval != ERROR_OK) {
|
|
LOG_ERROR("Selected transport mode is not supported.");
|
|
return ERROR_JTAG_INIT_FAILED;
|
|
}
|
|
|
|
LOG_INFO("J-Link JTAG Interface ready");
|
|
|
|
jlink_reset(0, 0);
|
|
jtag_sleep(3000);
|
|
jlink_tap_init();
|
|
|
|
jlink_speed(jtag_get_speed_khz());
|
|
|
|
if (!swd_mode) {
|
|
/* v5/6 jlink seems to have an issue if the first tap move
|
|
* is not divisible by 8, so we send a TLR on first power up */
|
|
for (i = 0; i < 8; i++)
|
|
jlink_tap_append_step(1, 0);
|
|
jlink_tap_execute();
|
|
}
|
|
|
|
return ERROR_OK;
|
|
}
|
|
|
|
static int jlink_quit(void)
|
|
{
|
|
jlink_usb_close(jlink_handle);
|
|
return ERROR_OK;
|
|
}
|
|
|
|
/***************************************************************************/
|
|
/* Queue command implementations */
|
|
|
|
static void jlink_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 jlink_state_move(void)
|
|
{
|
|
int i;
|
|
int tms = 0;
|
|
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++) {
|
|
tms = (tms_scan >> i) & 1;
|
|
jlink_tap_append_step(tms, 0);
|
|
}
|
|
|
|
tap_set_state(tap_get_end_state());
|
|
}
|
|
|
|
static void jlink_path_move(int num_states, tap_state_t *path)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < num_states; i++) {
|
|
if (path[i] == tap_state_transition(tap_get_state(), false))
|
|
jlink_tap_append_step(0, 0);
|
|
else if (path[i] == tap_state_transition(tap_get_state(), true))
|
|
jlink_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 jlink_runtest(int num_cycles)
|
|
{
|
|
int i;
|
|
|
|
tap_state_t saved_end_state = tap_get_end_state();
|
|
|
|
jlink_tap_ensure_space(1, num_cycles + 16);
|
|
|
|
/* only do a state_move when we're not already in IDLE */
|
|
if (tap_get_state() != TAP_IDLE) {
|
|
jlink_end_state(TAP_IDLE);
|
|
jlink_state_move();
|
|
/* num_cycles--; */
|
|
}
|
|
|
|
/* execute num_cycles */
|
|
for (i = 0; i < num_cycles; i++)
|
|
jlink_tap_append_step(0, 0);
|
|
|
|
/* finish in end_state */
|
|
jlink_end_state(saved_end_state);
|
|
if (tap_get_state() != tap_get_end_state())
|
|
jlink_state_move();
|
|
}
|
|
|
|
static void jlink_scan(bool ir_scan, enum scan_type type, uint8_t *buffer,
|
|
int scan_size, struct scan_command *command)
|
|
{
|
|
tap_state_t saved_end_state;
|
|
|
|
jlink_tap_ensure_space(1, scan_size + 16);
|
|
|
|
saved_end_state = tap_get_end_state();
|
|
|
|
/* Move to appropriate scan state */
|
|
jlink_end_state(ir_scan ? TAP_IRSHIFT : TAP_DRSHIFT);
|
|
|
|
/* Only move if we're not already there */
|
|
if (tap_get_state() != tap_get_end_state())
|
|
jlink_state_move();
|
|
|
|
jlink_end_state(saved_end_state);
|
|
|
|
/* Scan */
|
|
jlink_tap_append_scan(scan_size, buffer, command);
|
|
|
|
/* We are in Exit1, go to Pause */
|
|
jlink_tap_append_step(0, 0);
|
|
|
|
tap_set_state(ir_scan ? TAP_IRPAUSE : TAP_DRPAUSE);
|
|
|
|
if (tap_get_state() != tap_get_end_state())
|
|
jlink_state_move();
|
|
}
|
|
|
|
static void jlink_reset(int trst, int srst)
|
|
{
|
|
LOG_DEBUG("trst: %i, srst: %i", trst, srst);
|
|
|
|
/* Signals are active low */
|
|
if (srst == 0)
|
|
jlink_simple_command(EMU_CMD_HW_RESET1);
|
|
|
|
if (srst == 1)
|
|
jlink_simple_command(EMU_CMD_HW_RESET0);
|
|
|
|
if (trst == 1)
|
|
jlink_simple_command(EMU_CMD_HW_TRST0);
|
|
|
|
if (trst == 0)
|
|
jlink_simple_command(EMU_CMD_HW_TRST1);
|
|
}
|
|
|
|
static void jlink_simple_command(uint8_t command)
|
|
{
|
|
int result;
|
|
|
|
DEBUG_JTAG_IO("0x%02x", command);
|
|
|
|
usb_out_buffer[0] = command;
|
|
result = jlink_usb_write(jlink_handle, 1);
|
|
|
|
if (result != 1)
|
|
LOG_ERROR("J-Link command 0x%02x failed (%d)", command, result);
|
|
}
|
|
|
|
static int jlink_get_status(void)
|
|
{
|
|
int result;
|
|
|
|
jlink_simple_command(EMU_CMD_GET_STATE);
|
|
|
|
result = jlink_usb_read(jlink_handle, 8);
|
|
if (result != 8) {
|
|
LOG_ERROR("J-Link command EMU_CMD_GET_STATE failed (%d)", result);
|
|
return ERROR_JTAG_DEVICE_ERROR;
|
|
}
|
|
|
|
int vref = usb_in_buffer[0] + (usb_in_buffer[1] << 8);
|
|
LOG_INFO("Vref = %d.%d TCK = %d TDI = %d TDO = %d TMS = %d SRST = %d TRST = %d", \
|
|
vref / 1000, vref % 1000, \
|
|
usb_in_buffer[2], usb_in_buffer[3], usb_in_buffer[4], \
|
|
usb_in_buffer[5], usb_in_buffer[6], usb_in_buffer[7]);
|
|
|
|
if (vref < 1500)
|
|
LOG_ERROR("Vref too low. Check Target Power");
|
|
|
|
return ERROR_OK;
|
|
}
|
|
|
|
#define jlink_dump_printf(context, expr ...) \
|
|
do { \
|
|
if (context) \
|
|
command_print(context, expr); \
|
|
else \
|
|
LOG_INFO(expr); \
|
|
} while (0);
|
|
|
|
static void jlink_caps_dump(struct command_context *ctx)
|
|
{
|
|
int i;
|
|
|
|
jlink_dump_printf(ctx, "J-Link Capabilities");
|
|
|
|
for (i = 1; i < 31; i++)
|
|
if (jlink_caps & (1 << i))
|
|
jlink_dump_printf(ctx, "%s", jlink_cap_str[i]);
|
|
}
|
|
|
|
static void jlink_config_usb_address_dump(struct command_context *ctx, struct jlink_config *cfg)
|
|
{
|
|
if (!cfg)
|
|
return;
|
|
|
|
jlink_dump_printf(ctx, "USB-Address: 0x%x", cfg->usb_address);
|
|
}
|
|
|
|
static void jlink_config_kickstart_dump(struct command_context *ctx, struct jlink_config *cfg)
|
|
{
|
|
if (!cfg)
|
|
return;
|
|
|
|
jlink_dump_printf(ctx, "Kickstart power on JTAG-pin 19: 0x%" PRIx32,
|
|
cfg->kickstart_power_on_jtag_pin_19);
|
|
}
|
|
|
|
static void jlink_config_mac_address_dump(struct command_context *ctx, struct jlink_config *cfg)
|
|
{
|
|
if (!cfg)
|
|
return;
|
|
|
|
jlink_dump_printf(ctx, "MAC Address: %.02x:%.02x:%.02x:%.02x:%.02x:%.02x",
|
|
cfg->mac_address[5], cfg->mac_address[4],
|
|
cfg->mac_address[3], cfg->mac_address[2],
|
|
cfg->mac_address[1], cfg->mac_address[0]);
|
|
}
|
|
|
|
static void jlink_config_ip_dump(struct command_context *ctx, struct jlink_config *cfg)
|
|
{
|
|
if (!cfg)
|
|
return;
|
|
|
|
jlink_dump_printf(ctx, "IP Address: %d.%d.%d.%d",
|
|
cfg->ip_address[3], cfg->ip_address[2],
|
|
cfg->ip_address[1], cfg->ip_address[0]);
|
|
jlink_dump_printf(ctx, "Subnet Mask: %d.%d.%d.%d",
|
|
cfg->subnet_mask[3], cfg->subnet_mask[2],
|
|
cfg->subnet_mask[1], cfg->subnet_mask[0]);
|
|
}
|
|
|
|
static void jlink_config_dump(struct command_context *ctx, struct jlink_config *cfg)
|
|
{
|
|
if (!cfg)
|
|
return;
|
|
|
|
jlink_dump_printf(ctx, "J-Link configuration");
|
|
jlink_config_usb_address_dump(ctx, cfg);
|
|
jlink_config_kickstart_dump(ctx, cfg);
|
|
|
|
if (jlink_hw_type == JLINK_HW_TYPE_JLINK_PRO) {
|
|
jlink_config_ip_dump(ctx, cfg);
|
|
jlink_config_mac_address_dump(ctx, cfg);
|
|
}
|
|
}
|
|
|
|
static int jlink_get_config(struct jlink_config *cfg)
|
|
{
|
|
int result;
|
|
int size = sizeof(struct jlink_config);
|
|
|
|
usb_out_buffer[0] = EMU_CMD_READ_CONFIG;
|
|
result = jlink_usb_io(jlink_handle, 1, size);
|
|
|
|
if (result != ERROR_OK) {
|
|
LOG_ERROR("jlink_usb_read failed (requested=%d, result=%d)", size, result);
|
|
return ERROR_FAIL;
|
|
}
|
|
|
|
memcpy(cfg, usb_in_buffer, size);
|
|
return ERROR_OK;
|
|
}
|
|
|
|
static int jlink_set_config(struct jlink_config *cfg)
|
|
{
|
|
int result;
|
|
int size = sizeof(struct jlink_config);
|
|
|
|
jlink_simple_command(EMU_CMD_WRITE_CONFIG);
|
|
|
|
memcpy(usb_out_buffer, cfg, size);
|
|
|
|
result = jlink_usb_write(jlink_handle, size);
|
|
if (result != size) {
|
|
LOG_ERROR("jlink_usb_write failed (requested=%d, result=%d)", 256, result);
|
|
return ERROR_FAIL;
|
|
}
|
|
|
|
return ERROR_OK;
|
|
}
|
|
|
|
/*
|
|
* List of unsupported version string markers.
|
|
*
|
|
* The firmware versions does not correspond directly with
|
|
* "Software and documentation pack for Windows", it may be
|
|
* distinguished by the "compile" date in the information string.
|
|
*
|
|
* For example, version string is:
|
|
* "J-Link ARM V8 compiled May 3 2012 18:36:22"
|
|
* Marker sould be:
|
|
* "May 3 2012"
|
|
*
|
|
* The list must be terminated by NULL string.
|
|
*/
|
|
static const char * const unsupported_versions[] = {
|
|
"Jan 31 2011",
|
|
"JAN 31 2011",
|
|
NULL /* End of list */
|
|
};
|
|
|
|
static void jlink_check_supported(const char *str)
|
|
{
|
|
const char * const *p = unsupported_versions;
|
|
while (*p) {
|
|
if (NULL != strstr(str, *p)) {
|
|
LOG_WARNING(
|
|
"Unsupported J-Link firmware version.\n"
|
|
" Please check http://www.segger.com/j-link-older-versions.html for updates");
|
|
return;
|
|
}
|
|
p++;
|
|
}
|
|
}
|
|
|
|
static int jlink_get_version_info(void)
|
|
{
|
|
int result;
|
|
int len;
|
|
uint32_t jlink_max_size;
|
|
|
|
/* query hardware version */
|
|
jlink_simple_command(EMU_CMD_VERSION);
|
|
|
|
result = jlink_usb_read(jlink_handle, 2);
|
|
if (2 != result) {
|
|
LOG_ERROR("J-Link command EMU_CMD_VERSION failed (%d)", result);
|
|
return ERROR_JTAG_DEVICE_ERROR;
|
|
}
|
|
|
|
len = buf_get_u32(usb_in_buffer, 0, 16);
|
|
if (len > JLINK_IN_BUFFER_SIZE) {
|
|
LOG_ERROR("J-Link command EMU_CMD_VERSION impossible return length 0x%0x", len);
|
|
len = JLINK_IN_BUFFER_SIZE;
|
|
}
|
|
|
|
result = jlink_usb_read(jlink_handle, len);
|
|
if (result != len) {
|
|
LOG_ERROR("J-Link command EMU_CMD_VERSION failed (%d)", result);
|
|
return ERROR_JTAG_DEVICE_ERROR;
|
|
}
|
|
|
|
usb_in_buffer[result] = 0;
|
|
LOG_INFO("%s", (char *)usb_in_buffer);
|
|
jlink_check_supported((char *)usb_in_buffer);
|
|
|
|
/* query hardware capabilities */
|
|
jlink_simple_command(EMU_CMD_GET_CAPS);
|
|
|
|
result = jlink_usb_read(jlink_handle, 4);
|
|
if (4 != result) {
|
|
LOG_ERROR("J-Link command EMU_CMD_GET_CAPS failed (%d)", result);
|
|
return ERROR_JTAG_DEVICE_ERROR;
|
|
}
|
|
|
|
jlink_caps = buf_get_u32(usb_in_buffer, 0, 32);
|
|
LOG_INFO("J-Link caps 0x%x", (unsigned)jlink_caps);
|
|
|
|
if (jlink_caps & (1 << EMU_CAP_GET_HW_VERSION)) {
|
|
/* query hardware version */
|
|
jlink_simple_command(EMU_CMD_GET_HW_VERSION);
|
|
|
|
result = jlink_usb_read(jlink_handle, 4);
|
|
if (4 != result) {
|
|
LOG_ERROR("J-Link command EMU_CMD_GET_HW_VERSION failed (%d)", result);
|
|
return ERROR_JTAG_DEVICE_ERROR;
|
|
}
|
|
|
|
uint32_t jlink_hw_version = buf_get_u32(usb_in_buffer, 0, 32);
|
|
uint32_t major_revision = (jlink_hw_version / 10000) % 100;
|
|
jlink_hw_type = (jlink_hw_version / 1000000) % 100;
|
|
if (major_revision >= 5)
|
|
jlink_hw_jtag_version = 3;
|
|
|
|
LOG_INFO("J-Link hw version %i", (int)jlink_hw_version);
|
|
|
|
switch (jlink_hw_type) {
|
|
case JLINK_HW_TYPE_JLINK:
|
|
LOG_INFO("J-Link hw type J-Link");
|
|
break;
|
|
case JLINK_HW_TYPE_JTRACE:
|
|
LOG_INFO("J-Link hw type J-Trace");
|
|
break;
|
|
case JLINK_HW_TYPE_FLASHER:
|
|
LOG_INFO("J-Link hw type Flasher");
|
|
break;
|
|
case JLINK_HW_TYPE_JLINK_PRO:
|
|
LOG_INFO("J-Link hw type J-Link Pro");
|
|
break;
|
|
case JLINK_HW_TYPE_JLINK_LITE_ADI:
|
|
LOG_INFO("J-Link hw type J-Link Lite-ADI");
|
|
break;
|
|
case JLINK_HW_TYPE_JLINK_LITE_XMC4200:
|
|
LOG_INFO("J-Link hw type J-Link Lite-XMC4200");
|
|
break;
|
|
case JLINK_HW_TYPE_LPCLINK2:
|
|
LOG_INFO("J-Link hw type J-Link on LPC-Link2");
|
|
break;
|
|
default:
|
|
LOG_INFO("J-Link hw type unknown 0x%" PRIx32, jlink_hw_type);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (jlink_caps & (1 << EMU_CAP_GET_MAX_BLOCK_SIZE)) {
|
|
/* query hardware maximum memory block */
|
|
jlink_simple_command(EMU_CMD_GET_MAX_MEM_BLOCK);
|
|
|
|
result = jlink_usb_read(jlink_handle, 4);
|
|
if (4 != result) {
|
|
LOG_ERROR("J-Link command EMU_CMD_GET_MAX_MEM_BLOCK failed (%d)", result);
|
|
return ERROR_JTAG_DEVICE_ERROR;
|
|
}
|
|
|
|
jlink_max_size = buf_get_u32(usb_in_buffer, 0, 32);
|
|
LOG_INFO("J-Link max mem block %i", (int)jlink_max_size);
|
|
}
|
|
|
|
if (jlink_caps & (1 << EMU_CAP_READ_CONFIG)) {
|
|
if (jlink_get_config(&jlink_cfg) != ERROR_OK)
|
|
return ERROR_JTAG_DEVICE_ERROR;
|
|
|
|
jlink_config_dump(NULL, &jlink_cfg);
|
|
}
|
|
|
|
return ERROR_OK;
|
|
}
|
|
|
|
COMMAND_HANDLER(jlink_pid_command)
|
|
{
|
|
if (CMD_ARGC != 1) {
|
|
LOG_ERROR("Need exactly one argument to jlink_pid");
|
|
return ERROR_FAIL;
|
|
}
|
|
|
|
pids[0] = strtoul(CMD_ARGV[0], NULL, 16);
|
|
pids[1] = 0;
|
|
vids[1] = 0;
|
|
|
|
return ERROR_OK;
|
|
}
|
|
|
|
COMMAND_HANDLER(jlink_serial_command)
|
|
{
|
|
if (CMD_ARGC != 1) {
|
|
LOG_ERROR("Need exactly one argument to jlink_serial");
|
|
return ERROR_FAIL;
|
|
}
|
|
if (jlink_serial)
|
|
free(jlink_serial);
|
|
jlink_serial = strdup(CMD_ARGV[0]);
|
|
|
|
return ERROR_OK;
|
|
}
|
|
|
|
COMMAND_HANDLER(jlink_handle_jlink_info_command)
|
|
{
|
|
if (jlink_get_version_info() == ERROR_OK) {
|
|
/* attempt to get status */
|
|
jlink_get_status();
|
|
}
|
|
|
|
return ERROR_OK;
|
|
}
|
|
|
|
COMMAND_HANDLER(jlink_handle_jlink_caps_command)
|
|
{
|
|
jlink_caps_dump(CMD_CTX);
|
|
|
|
return ERROR_OK;
|
|
}
|
|
|
|
COMMAND_HANDLER(jlink_handle_jlink_hw_jtag_command)
|
|
{
|
|
switch (CMD_ARGC) {
|
|
case 0:
|
|
command_print(CMD_CTX, "J-Link hw jtag %i", jlink_hw_jtag_version);
|
|
break;
|
|
case 1: {
|
|
int request_version = atoi(CMD_ARGV[0]);
|
|
switch (request_version) {
|
|
case 2:
|
|
case 3:
|
|
jlink_hw_jtag_version = request_version;
|
|
break;
|
|
default:
|
|
return ERROR_COMMAND_SYNTAX_ERROR;
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
return ERROR_COMMAND_SYNTAX_ERROR;
|
|
}
|
|
|
|
return ERROR_OK;
|
|
}
|
|
|
|
COMMAND_HANDLER(jlink_handle_jlink_kickstart_command)
|
|
{
|
|
uint32_t kickstart;
|
|
|
|
if (CMD_ARGC < 1) {
|
|
jlink_config_kickstart_dump(CMD_CTX, &jlink_cfg);
|
|
return ERROR_OK;
|
|
}
|
|
|
|
COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], kickstart);
|
|
|
|
jlink_cfg.kickstart_power_on_jtag_pin_19 = kickstart;
|
|
return ERROR_OK;
|
|
}
|
|
|
|
COMMAND_HANDLER(jlink_handle_jlink_mac_address_command)
|
|
{
|
|
uint8_t addr[6];
|
|
int i;
|
|
char *e;
|
|
const char *str;
|
|
|
|
if (CMD_ARGC < 1) {
|
|
jlink_config_mac_address_dump(CMD_CTX, &jlink_cfg);
|
|
return ERROR_OK;
|
|
}
|
|
|
|
str = CMD_ARGV[0];
|
|
|
|
if ((strlen(str) != 17) || (str[2] != ':' || str[5] != ':' || str[8] != ':' ||
|
|
str[11] != ':' || str[14] != ':')) {
|
|
command_print(CMD_CTX, "ethaddr miss format ff:ff:ff:ff:ff:ff");
|
|
return ERROR_COMMAND_SYNTAX_ERROR;
|
|
}
|
|
|
|
for (i = 5; i >= 0; i--) {
|
|
addr[i] = strtoul(str, &e, 16);
|
|
str = e + 1;
|
|
}
|
|
|
|
if (!(addr[0] | addr[1] | addr[2] | addr[3] | addr[4] | addr[5])) {
|
|
command_print(CMD_CTX, "invalid it's zero mac_address");
|
|
return ERROR_COMMAND_SYNTAX_ERROR;
|
|
}
|
|
|
|
if (!(0x01 & addr[0])) {
|
|
command_print(CMD_CTX, "invalid it's a multicat mac_address");
|
|
return ERROR_COMMAND_SYNTAX_ERROR;
|
|
}
|
|
|
|
memcpy(jlink_cfg.mac_address, addr, sizeof(addr));
|
|
|
|
return ERROR_OK;
|
|
}
|
|
|
|
static int string_to_ip(const char *s, uint8_t *ip, int *pos)
|
|
{
|
|
uint8_t lip[4];
|
|
char *e;
|
|
const char *s_save = s;
|
|
int i;
|
|
|
|
if (!s)
|
|
return -EINVAL;
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
lip[i] = strtoul(s, &e, 10);
|
|
|
|
if (*e != '.' && i != 3)
|
|
return -EINVAL;
|
|
|
|
s = e + 1;
|
|
}
|
|
|
|
*pos = e - s_save;
|
|
|
|
memcpy(ip, lip, sizeof(lip));
|
|
return ERROR_OK;
|
|
}
|
|
|
|
static void cpy_ip(uint8_t *dst, uint8_t *src)
|
|
{
|
|
int i, j;
|
|
|
|
for (i = 0, j = 3; i < 4; i++, j--)
|
|
dst[i] = src[j];
|
|
}
|
|
|
|
COMMAND_HANDLER(jlink_handle_jlink_ip_command)
|
|
{
|
|
uint32_t ip_address;
|
|
uint32_t subnet_mask = 0;
|
|
int i, len;
|
|
int ret;
|
|
uint8_t subnet_bits = 24;
|
|
|
|
if (CMD_ARGC < 1) {
|
|
jlink_config_ip_dump(CMD_CTX, &jlink_cfg);
|
|
return ERROR_OK;
|
|
}
|
|
|
|
ret = string_to_ip(CMD_ARGV[0], (uint8_t *)&ip_address, &i);
|
|
if (ret != ERROR_OK)
|
|
return ret;
|
|
|
|
len = strlen(CMD_ARGV[0]);
|
|
|
|
/* check for this format A.B.C.D/E */
|
|
|
|
if (i < len) {
|
|
if (CMD_ARGV[0][i] != '/')
|
|
return ERROR_COMMAND_SYNTAX_ERROR;
|
|
|
|
COMMAND_PARSE_NUMBER(u8, CMD_ARGV[0] + i + 1, subnet_bits);
|
|
} else {
|
|
if (CMD_ARGC > 1) {
|
|
ret = string_to_ip(CMD_ARGV[1], (uint8_t *)&subnet_mask, &i);
|
|
if (ret != ERROR_OK)
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
if (!subnet_mask)
|
|
subnet_mask = (uint32_t)(subnet_bits < 32 ?
|
|
((1ULL << subnet_bits) - 1) : 0xffffffff);
|
|
|
|
cpy_ip(jlink_cfg.ip_address, (uint8_t *)&ip_address);
|
|
cpy_ip(jlink_cfg.subnet_mask, (uint8_t *)&subnet_mask);
|
|
|
|
return ERROR_OK;
|
|
}
|
|
|
|
COMMAND_HANDLER(jlink_handle_jlink_reset_command)
|
|
{
|
|
memset(&jlink_cfg, 0xff, sizeof(jlink_cfg));
|
|
return ERROR_OK;
|
|
}
|
|
|
|
COMMAND_HANDLER(jlink_handle_jlink_save_command)
|
|
{
|
|
if (!(jlink_caps & (1 << EMU_CAP_WRITE_CONFIG))) {
|
|
command_print(CMD_CTX, "J-Link write emulator configuration not supported");
|
|
return ERROR_OK;
|
|
}
|
|
|
|
command_print(CMD_CTX, "The J-Link need to be unpluged and repluged ta have the config effective");
|
|
return jlink_set_config(&jlink_cfg);
|
|
}
|
|
|
|
COMMAND_HANDLER(jlink_handle_jlink_usb_address_command)
|
|
{
|
|
uint32_t address;
|
|
|
|
if (CMD_ARGC < 1) {
|
|
jlink_config_usb_address_dump(CMD_CTX, &jlink_cfg);
|
|
return ERROR_OK;
|
|
}
|
|
|
|
COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], address);
|
|
|
|
if (address > 0x3 && address != 0xff) {
|
|
command_print(CMD_CTX, "USB Address must be between 0x00 and 0x03 or 0xff");
|
|
return ERROR_COMMAND_SYNTAX_ERROR;
|
|
}
|
|
|
|
jlink_cfg.usb_address = address;
|
|
return ERROR_OK;
|
|
}
|
|
|
|
COMMAND_HANDLER(jlink_handle_jlink_config_command)
|
|
{
|
|
struct jlink_config cfg;
|
|
int ret = ERROR_OK;
|
|
|
|
if (CMD_ARGC == 0) {
|
|
if (!(jlink_caps & (1 << EMU_CAP_READ_CONFIG))) {
|
|
command_print(CMD_CTX, "J-Link read emulator configuration not supported");
|
|
goto exit;
|
|
}
|
|
|
|
ret = jlink_get_config(&cfg);
|
|
|
|
if (ret != ERROR_OK)
|
|
command_print(CMD_CTX, "J-Link read emulator configuration failled");
|
|
else
|
|
jlink_config_dump(CMD_CTX, &jlink_cfg);
|
|
}
|
|
|
|
exit:
|
|
return ret;
|
|
}
|
|
|
|
static const struct command_registration jlink_config_subcommand_handlers[] = {
|
|
{
|
|
.name = "kickstart",
|
|
.handler = &jlink_handle_jlink_kickstart_command,
|
|
.mode = COMMAND_EXEC,
|
|
.help = "set Kickstart power on JTAG-pin 19.",
|
|
.usage = "[val]",
|
|
},
|
|
{
|
|
.name = "mac_address",
|
|
.handler = &jlink_handle_jlink_mac_address_command,
|
|
.mode = COMMAND_EXEC,
|
|
.help = "set the MAC Address",
|
|
.usage = "[ff:ff:ff:ff:ff:ff]",
|
|
},
|
|
{
|
|
.name = "ip",
|
|
.handler = &jlink_handle_jlink_ip_command,
|
|
.mode = COMMAND_EXEC,
|
|
.help = "set the ip address of the J-Link Pro, "
|
|
"where A.B.C.D is the ip, "
|
|
"E the bit of the subnet mask, "
|
|
"F.G.H.I the subnet mask",
|
|
.usage = "[A.B.C.D[/E] [F.G.H.I]]",
|
|
},
|
|
{
|
|
.name = "reset",
|
|
.handler = &jlink_handle_jlink_reset_command,
|
|
.mode = COMMAND_EXEC,
|
|
.help = "reset the current config",
|
|
},
|
|
{
|
|
.name = "save",
|
|
.handler = &jlink_handle_jlink_save_command,
|
|
.mode = COMMAND_EXEC,
|
|
.help = "save the current config",
|
|
},
|
|
{
|
|
.name = "usb_address",
|
|
.handler = &jlink_handle_jlink_usb_address_command,
|
|
.mode = COMMAND_EXEC,
|
|
.help = "set the USB-Address, "
|
|
"This will change the product id",
|
|
.usage = "[0x00 to 0x03 or 0xff]",
|
|
},
|
|
COMMAND_REGISTRATION_DONE
|
|
};
|
|
|
|
static const struct command_registration jlink_subcommand_handlers[] = {
|
|
{
|
|
.name = "caps",
|
|
.handler = &jlink_handle_jlink_caps_command,
|
|
.mode = COMMAND_EXEC,
|
|
.help = "show jlink capabilities",
|
|
},
|
|
{
|
|
.name = "info",
|
|
.handler = &jlink_handle_jlink_info_command,
|
|
.mode = COMMAND_EXEC,
|
|
.help = "show jlink info",
|
|
},
|
|
{
|
|
.name = "hw_jtag",
|
|
.handler = &jlink_handle_jlink_hw_jtag_command,
|
|
.mode = COMMAND_EXEC,
|
|
.help = "access J-Link HW JTAG command version",
|
|
.usage = "[2|3]",
|
|
},
|
|
{
|
|
.name = "config",
|
|
.handler = &jlink_handle_jlink_config_command,
|
|
.mode = COMMAND_EXEC,
|
|
.help = "access J-Link configuration, "
|
|
"if no argument this will dump the config",
|
|
.chain = jlink_config_subcommand_handlers,
|
|
},
|
|
{
|
|
.name = "pid",
|
|
.handler = &jlink_pid_command,
|
|
.mode = COMMAND_CONFIG,
|
|
.help = "set the pid of the interface we want to use",
|
|
},
|
|
{
|
|
.name = "serial",
|
|
.handler = &jlink_serial_command,
|
|
.mode = COMMAND_CONFIG,
|
|
.help = "set the serial number of the J-Link adapter we want to use"
|
|
},
|
|
COMMAND_REGISTRATION_DONE
|
|
};
|
|
|
|
static const struct command_registration jlink_command_handlers[] = {
|
|
{
|
|
.name = "jlink",
|
|
.mode = COMMAND_ANY,
|
|
.help = "perform jlink management",
|
|
.chain = jlink_subcommand_handlers,
|
|
},
|
|
COMMAND_REGISTRATION_DONE
|
|
};
|
|
|
|
static int jlink_swd_init(void)
|
|
{
|
|
LOG_INFO("JLink SWD mode enabled");
|
|
swd_mode = true;
|
|
|
|
return ERROR_OK;
|
|
}
|
|
|
|
static void jlink_swd_write_reg(struct adiv5_dap *dap, uint8_t cmd, uint32_t value)
|
|
{
|
|
assert(!(cmd & SWD_CMD_RnW));
|
|
jlink_swd_queue_cmd(dap, cmd, NULL, value);
|
|
}
|
|
|
|
static void jlink_swd_read_reg(struct adiv5_dap *dap, uint8_t cmd, uint32_t *value)
|
|
{
|
|
assert(cmd & SWD_CMD_RnW);
|
|
jlink_swd_queue_cmd(dap, cmd, value, 0);
|
|
}
|
|
|
|
static int_least32_t jlink_swd_frequency(struct adiv5_dap *dap, int_least32_t hz)
|
|
{
|
|
if (hz > 0)
|
|
jlink_speed(hz / 1000);
|
|
|
|
return hz;
|
|
}
|
|
|
|
static const struct swd_driver jlink_swd = {
|
|
.init = jlink_swd_init,
|
|
.frequency = jlink_swd_frequency,
|
|
.switch_seq = jlink_swd_switch_seq,
|
|
.read_reg = jlink_swd_read_reg,
|
|
.write_reg = jlink_swd_write_reg,
|
|
.run = jlink_swd_run_queue,
|
|
};
|
|
|
|
static const char * const jlink_transports[] = { "jtag", "swd", NULL };
|
|
|
|
struct jtag_interface jlink_interface = {
|
|
.name = "jlink",
|
|
.commands = jlink_command_handlers,
|
|
.transports = jlink_transports,
|
|
.swd = &jlink_swd,
|
|
|
|
.execute_queue = jlink_execute_queue,
|
|
.speed = jlink_speed,
|
|
.speed_div = jlink_speed_div,
|
|
.khz = jlink_khz,
|
|
.init = jlink_init,
|
|
.quit = jlink_quit,
|
|
};
|
|
|
|
/***************************************************************************/
|
|
/* J-Link tap functions */
|
|
|
|
|
|
static unsigned tap_length;
|
|
/* In SWD mode use tms buffer for direction control */
|
|
static uint8_t tms_buffer[JLINK_TAP_BUFFER_SIZE];
|
|
static uint8_t tdi_buffer[JLINK_TAP_BUFFER_SIZE];
|
|
static uint8_t tdo_buffer[JLINK_TAP_BUFFER_SIZE];
|
|
|
|
struct pending_scan_result {
|
|
int first; /* First bit position in tdo_buffer to read */
|
|
int length; /* Number of bits to read */
|
|
struct scan_command *command; /* Corresponding scan command */
|
|
void *buffer;
|
|
};
|
|
|
|
#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];
|
|
|
|
static void jlink_tap_init(void)
|
|
{
|
|
tap_length = 0;
|
|
pending_scan_results_length = 0;
|
|
}
|
|
|
|
static void jlink_tap_ensure_space(int scans, int bits)
|
|
{
|
|
int available_scans = MAX_PENDING_SCAN_RESULTS - pending_scan_results_length;
|
|
int available_bits = JLINK_TAP_BUFFER_SIZE * 8 - tap_length - 32;
|
|
|
|
if (scans > available_scans || bits > available_bits)
|
|
jlink_tap_execute();
|
|
}
|
|
|
|
static void jlink_tap_append_step(int tms, int tdi)
|
|
{
|
|
int index_var = tap_length / 8;
|
|
|
|
assert(index_var < JLINK_TAP_BUFFER_SIZE);
|
|
|
|
int bit_index = tap_length % 8;
|
|
uint8_t bit = 1 << bit_index;
|
|
|
|
/* we do not pad TMS, so be sure to initialize all bits */
|
|
if (0 == bit_index)
|
|
tms_buffer[index_var] = tdi_buffer[index_var] = 0;
|
|
|
|
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++;
|
|
}
|
|
|
|
static void jlink_tap_append_scan(int length, uint8_t *buffer,
|
|
struct scan_command *command)
|
|
{
|
|
struct pending_scan_result *pending_scan_result =
|
|
&pending_scan_results_buffer[pending_scan_results_length];
|
|
int i;
|
|
|
|
pending_scan_result->first = tap_length;
|
|
pending_scan_result->length = length;
|
|
pending_scan_result->command = command;
|
|
pending_scan_result->buffer = buffer;
|
|
|
|
for (i = 0; i < length; i++) {
|
|
int tms = (i < (length - 1)) ? 0 : 1;
|
|
int tdi = (buffer[i / 8] & (1 << (i % 8))) != 0;
|
|
jlink_tap_append_step(tms, tdi);
|
|
}
|
|
pending_scan_results_length++;
|
|
}
|
|
|
|
/* Pad and send a tap sequence to the device, and receive the answer.
|
|
* For the purpose of padding we assume that we are in idle or pause state. */
|
|
static int jlink_tap_execute(void)
|
|
{
|
|
int byte_length;
|
|
int i;
|
|
int result;
|
|
|
|
if (!tap_length)
|
|
return ERROR_OK;
|
|
|
|
/* JLink returns an extra NULL in packet when size of incoming
|
|
* message is a multiple of 64, creates problems with USB comms.
|
|
* WARNING: This will interfere with tap state counting. */
|
|
while ((DIV_ROUND_UP(tap_length, 8) % 64) == 0)
|
|
jlink_tap_append_step((tap_get_state() == TAP_RESET) ? 1 : 0, 0);
|
|
|
|
/* number of full bytes (plus one if some would be left over) */
|
|
byte_length = DIV_ROUND_UP(tap_length, 8);
|
|
|
|
bool use_jtag3 = jlink_hw_jtag_version >= 3;
|
|
usb_out_buffer[0] = use_jtag3 ? EMU_CMD_HW_JTAG3 : EMU_CMD_HW_JTAG2;
|
|
usb_out_buffer[1] = 0;
|
|
usb_out_buffer[2] = (tap_length >> 0) & 0xff;
|
|
usb_out_buffer[3] = (tap_length >> 8) & 0xff;
|
|
memcpy(usb_out_buffer + 4, tms_buffer, byte_length);
|
|
memcpy(usb_out_buffer + 4 + byte_length, tdi_buffer, byte_length);
|
|
|
|
jlink_last_state = jtag_debug_state_machine(tms_buffer, tdi_buffer,
|
|
tap_length, jlink_last_state);
|
|
|
|
result = jlink_usb_message(jlink_handle, 4 + 2 * byte_length,
|
|
use_jtag3 ? byte_length + 1 : byte_length);
|
|
if (result != ERROR_OK) {
|
|
LOG_ERROR("jlink_tap_execute failed USB io (%d)", result);
|
|
jlink_tap_init();
|
|
return ERROR_JTAG_QUEUE_FAILED;
|
|
}
|
|
|
|
result = use_jtag3 ? usb_in_buffer[byte_length] : 0;
|
|
if (result != 0) {
|
|
LOG_ERROR("jlink_tap_execute failed, result %d (%s)", result,
|
|
result == 1 ? "adaptive clocking timeout" : "unknown");
|
|
jlink_tap_init();
|
|
return ERROR_JTAG_QUEUE_FAILED;
|
|
}
|
|
|
|
memcpy(tdo_buffer, usb_in_buffer, byte_length);
|
|
|
|
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 first = pending_scan_result->first;
|
|
struct scan_command *command = pending_scan_result->command;
|
|
|
|
/* Copy to buffer */
|
|
buf_set_buf(tdo_buffer, first, buffer, 0, length);
|
|
|
|
DEBUG_JTAG_IO("pending scan result, length = %d", length);
|
|
|
|
jlink_debug_buffer(buffer, DIV_ROUND_UP(length, 8));
|
|
|
|
if (jtag_read_buffer(buffer, command) != ERROR_OK) {
|
|
jlink_tap_init();
|
|
return ERROR_JTAG_QUEUE_FAILED;
|
|
}
|
|
|
|
if (pending_scan_result->buffer != NULL)
|
|
free(pending_scan_result->buffer);
|
|
}
|
|
|
|
jlink_tap_init();
|
|
return ERROR_OK;
|
|
}
|
|
|
|
static void fill_buffer(uint8_t *buf, uint32_t val, uint32_t len)
|
|
{
|
|
unsigned int tap_pos = tap_length;
|
|
|
|
while (len > 32) {
|
|
buf_set_u32(buf, tap_pos, 32, val);
|
|
len -= 32;
|
|
tap_pos += 32;
|
|
}
|
|
if (len)
|
|
buf_set_u32(buf, tap_pos, len, val);
|
|
}
|
|
|
|
static void jlink_queue_data_out(const uint8_t *data, uint32_t len)
|
|
{
|
|
const uint32_t dir_out = 0xffffffff;
|
|
|
|
if (data)
|
|
bit_copy(tdi_buffer, tap_length, data, 0, len);
|
|
else
|
|
fill_buffer(tdi_buffer, 0, len);
|
|
fill_buffer(tms_buffer, dir_out, len);
|
|
tap_length += len;
|
|
}
|
|
|
|
static void jlink_queue_data_in(uint32_t len)
|
|
{
|
|
const uint32_t dir_in = 0;
|
|
|
|
fill_buffer(tms_buffer, dir_in, len);
|
|
tap_length += len;
|
|
}
|
|
|
|
static int jlink_swd_switch_seq(struct adiv5_dap *dap, enum swd_special_seq seq)
|
|
{
|
|
const uint8_t *s;
|
|
unsigned int s_len;
|
|
|
|
switch (seq) {
|
|
case LINE_RESET:
|
|
LOG_DEBUG("SWD line reset");
|
|
s = swd_seq_line_reset;
|
|
s_len = swd_seq_line_reset_len;
|
|
break;
|
|
case JTAG_TO_SWD:
|
|
LOG_DEBUG("JTAG-to-SWD");
|
|
s = swd_seq_jtag_to_swd;
|
|
s_len = swd_seq_jtag_to_swd_len;
|
|
break;
|
|
case SWD_TO_JTAG:
|
|
LOG_DEBUG("SWD-to-JTAG");
|
|
s = swd_seq_swd_to_jtag;
|
|
s_len = swd_seq_swd_to_jtag_len;
|
|
break;
|
|
default:
|
|
LOG_ERROR("Sequence %d not supported", seq);
|
|
return ERROR_FAIL;
|
|
}
|
|
|
|
jlink_queue_data_out(s, s_len);
|
|
|
|
return ERROR_OK;
|
|
}
|
|
|
|
static int jlink_swd_run_queue(struct adiv5_dap *dap)
|
|
{
|
|
LOG_DEBUG("Executing %d queued transactions", pending_scan_results_length);
|
|
int retval;
|
|
|
|
if (queued_retval != ERROR_OK) {
|
|
LOG_DEBUG("Skipping due to previous errors: %d", queued_retval);
|
|
goto skip;
|
|
}
|
|
|
|
/* A transaction must be followed by another transaction or at least 8 idle cycles to
|
|
* ensure that data is clocked through the AP. */
|
|
jlink_queue_data_out(NULL, 8);
|
|
|
|
size_t byte_length = DIV_ROUND_UP(tap_length, 8);
|
|
|
|
/* There's a comment in jlink_tap_execute saying JLink returns
|
|
* an extra NULL in packet when size of incoming message is a
|
|
* multiple of 64. Someone should verify if that's still the
|
|
* case with the current jlink firmware */
|
|
|
|
usb_out_buffer[0] = EMU_CMD_HW_JTAG3;
|
|
usb_out_buffer[1] = 0;
|
|
usb_out_buffer[2] = (tap_length >> 0) & 0xff;
|
|
usb_out_buffer[3] = (tap_length >> 8) & 0xff;
|
|
memcpy(usb_out_buffer + 4, tms_buffer, byte_length);
|
|
memcpy(usb_out_buffer + 4 + byte_length, tdi_buffer, byte_length);
|
|
|
|
retval = jlink_usb_message(jlink_handle, 4 + 2 * byte_length,
|
|
byte_length + 1);
|
|
if (retval != ERROR_OK) {
|
|
LOG_ERROR("jlink_swd_run_queue failed USB io (%d)", retval);
|
|
goto skip;
|
|
}
|
|
|
|
retval = usb_in_buffer[byte_length];
|
|
if (retval) {
|
|
LOG_ERROR("jlink_swd_run_queue failed, result %d", retval);
|
|
goto skip;
|
|
}
|
|
|
|
for (int i = 0; i < pending_scan_results_length; i++) {
|
|
int ack = buf_get_u32(usb_in_buffer, pending_scan_results_buffer[i].first, 3);
|
|
|
|
if (ack != SWD_ACK_OK) {
|
|
LOG_DEBUG("SWD ack not OK: %d %s", ack,
|
|
ack == SWD_ACK_WAIT ? "WAIT" : ack == SWD_ACK_FAULT ? "FAULT" : "JUNK");
|
|
queued_retval = ack == SWD_ACK_WAIT ? ERROR_WAIT : ERROR_FAIL;
|
|
goto skip;
|
|
} else if (pending_scan_results_buffer[i].length) {
|
|
uint32_t data = buf_get_u32(usb_in_buffer, 3 + pending_scan_results_buffer[i].first, 32);
|
|
int parity = buf_get_u32(usb_in_buffer, 3 + 32 + pending_scan_results_buffer[i].first, 1);
|
|
|
|
if (parity != parity_u32(data)) {
|
|
LOG_ERROR("SWD Read data parity mismatch");
|
|
queued_retval = ERROR_FAIL;
|
|
goto skip;
|
|
}
|
|
|
|
if (pending_scan_results_buffer[i].buffer)
|
|
*(uint32_t *)pending_scan_results_buffer[i].buffer = data;
|
|
}
|
|
}
|
|
|
|
skip:
|
|
jlink_tap_init();
|
|
retval = queued_retval;
|
|
queued_retval = ERROR_OK;
|
|
|
|
return retval;
|
|
}
|
|
|
|
static void jlink_swd_queue_cmd(struct adiv5_dap *dap, uint8_t cmd, uint32_t *dst, uint32_t data)
|
|
{
|
|
uint8_t data_parity_trn[DIV_ROUND_UP(32 + 1, 8)];
|
|
if (tap_length + 46 + 8 + dap->memaccess_tck >= sizeof(tdi_buffer) * 8 ||
|
|
pending_scan_results_length == MAX_PENDING_SCAN_RESULTS) {
|
|
/* Not enough room in the queue. Run the queue. */
|
|
queued_retval = jlink_swd_run_queue(dap);
|
|
}
|
|
|
|
if (queued_retval != ERROR_OK)
|
|
return;
|
|
|
|
cmd |= SWD_CMD_START | SWD_CMD_PARK;
|
|
|
|
jlink_queue_data_out(&cmd, 8);
|
|
|
|
pending_scan_results_buffer[pending_scan_results_length].first = tap_length;
|
|
|
|
if (cmd & SWD_CMD_RnW) {
|
|
/* Queue a read transaction */
|
|
pending_scan_results_buffer[pending_scan_results_length].length = 32;
|
|
pending_scan_results_buffer[pending_scan_results_length].buffer = dst;
|
|
|
|
jlink_queue_data_in(1 + 3 + 32 + 1 + 1);
|
|
} else {
|
|
/* Queue a write transaction */
|
|
pending_scan_results_buffer[pending_scan_results_length].length = 0;
|
|
jlink_queue_data_in(1 + 3 + 1);
|
|
|
|
buf_set_u32(data_parity_trn, 0, 32, data);
|
|
buf_set_u32(data_parity_trn, 32, 1, parity_u32(data));
|
|
|
|
jlink_queue_data_out(data_parity_trn, 32 + 1);
|
|
}
|
|
|
|
pending_scan_results_length++;
|
|
|
|
/* Insert idle cycles after AP accesses to avoid WAIT */
|
|
if (cmd & SWD_CMD_APnDP)
|
|
jlink_queue_data_out(NULL, dap->memaccess_tck);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/* JLink USB low-level functions */
|
|
|
|
static struct jlink *jlink_usb_open()
|
|
{
|
|
struct jtag_libusb_device_handle *devh;
|
|
if (jtag_libusb_open(vids, pids, jlink_serial, &devh) != ERROR_OK)
|
|
return NULL;
|
|
|
|
/* BE ***VERY CAREFUL*** ABOUT MAKING CHANGES IN THIS
|
|
* AREA!!!!!!!!!!! The behavior of libusb is not completely
|
|
* consistent across Windows, Linux, and Mac OS X platforms.
|
|
* The actions taken in the following compiler conditionals may
|
|
* not agree with published documentation for libusb, but were
|
|
* found to be necessary through trials and tribulations. Even
|
|
* little tweaks can break one or more platforms, so if you do
|
|
* make changes test them carefully on all platforms before
|
|
* committing them!
|
|
*/
|
|
|
|
/* This entire block can probably be removed. It was a workaround for
|
|
* libusb0.1 and old JLink firmware. It has already be removed for
|
|
* windows and causing problems (LPC Link-2 with JLink firmware) on
|
|
* Linux with libusb1.0.
|
|
*
|
|
* However, for now the behavior will be left unchanged for non-windows
|
|
* platforms using libusb0.1 due to lack of testing.
|
|
*/
|
|
#if IS_WIN32 == 0 && HAVE_LIBUSB1 == 0
|
|
|
|
jtag_libusb_reset_device(devh);
|
|
|
|
#if IS_DARWIN == 0
|
|
|
|
int timeout = 5;
|
|
/* reopen jlink after usb_reset
|
|
* on win32 this may take a second or two to re-enumerate */
|
|
int retval;
|
|
while ((retval = jtag_libusb_open(vids, pids, jlink_serial, &devh)) != ERROR_OK) {
|
|
usleep(1000);
|
|
timeout--;
|
|
if (!timeout)
|
|
break;
|
|
}
|
|
if (ERROR_OK != retval)
|
|
return NULL;
|
|
#endif
|
|
|
|
#endif
|
|
|
|
/* usb_set_configuration is only required under win32
|
|
* with libusb 0.1 and libusb0.sys. For libusb 1.0 it is a no-op
|
|
* since the configuration is already set. */
|
|
jtag_libusb_set_configuration(devh, 0);
|
|
|
|
jtag_libusb_choose_interface(devh, &jlink_read_ep, &jlink_write_ep,
|
|
JLINK_USB_INTERFACE_CLASS,
|
|
JLINK_USB_INTERFACE_SUBCLASS,
|
|
JLINK_USB_INTERFACE_PROTOCOL);
|
|
|
|
struct jlink *result = malloc(sizeof(struct jlink));
|
|
result->usb_handle = devh;
|
|
return result;
|
|
}
|
|
|
|
static void jlink_usb_close(struct jlink *jlink)
|
|
{
|
|
jtag_libusb_close(jlink->usb_handle);
|
|
free(jlink);
|
|
}
|
|
|
|
/* Send a message and receive the reply. */
|
|
static int jlink_usb_message(struct jlink *jlink, int out_length, int in_length)
|
|
{
|
|
int result;
|
|
|
|
result = jlink_usb_write(jlink, out_length);
|
|
if (result != out_length) {
|
|
LOG_ERROR("usb_bulk_write failed (requested=%d, result=%d)",
|
|
out_length, result);
|
|
return ERROR_JTAG_DEVICE_ERROR;
|
|
}
|
|
|
|
result = jlink_usb_read(jlink, in_length);
|
|
if (result != in_length) {
|
|
LOG_ERROR("usb_bulk_read failed (requested=%d, result=%d)",
|
|
in_length, result);
|
|
return ERROR_JTAG_DEVICE_ERROR;
|
|
}
|
|
return ERROR_OK;
|
|
}
|
|
|
|
/* calls the given usb_bulk_* function, allowing for the data to
|
|
* trickle in with some timeouts */
|
|
static int usb_bulk_with_retries(
|
|
int (*f)(jtag_libusb_device_handle *, int, char *, int, int),
|
|
jtag_libusb_device_handle *dev, int ep,
|
|
char *bytes, int size, int timeout)
|
|
{
|
|
int tries = 3, count = 0;
|
|
|
|
while (tries && (count < size)) {
|
|
int result = f(dev, ep, bytes + count, size - count, timeout);
|
|
if (result > 0)
|
|
count += result;
|
|
else if ((-ETIMEDOUT != result) || !--tries)
|
|
return result;
|
|
}
|
|
return count;
|
|
}
|
|
|
|
static int wrap_usb_bulk_write(jtag_libusb_device_handle *dev, int ep,
|
|
char *buff, int size, int timeout)
|
|
{
|
|
/* usb_bulk_write() takes const char *buff */
|
|
return jtag_libusb_bulk_write(dev, ep, buff, size, timeout);
|
|
}
|
|
|
|
static inline int usb_bulk_write_ex(jtag_libusb_device_handle *dev, int ep,
|
|
char *bytes, int size, int timeout)
|
|
{
|
|
return usb_bulk_with_retries(&wrap_usb_bulk_write,
|
|
dev, ep, bytes, size, timeout);
|
|
}
|
|
|
|
static inline int usb_bulk_read_ex(jtag_libusb_device_handle *dev, int ep,
|
|
char *bytes, int size, int timeout)
|
|
{
|
|
return usb_bulk_with_retries(&jtag_libusb_bulk_read,
|
|
dev, ep, bytes, size, timeout);
|
|
}
|
|
|
|
/* Write data from out_buffer to USB. */
|
|
static int jlink_usb_write(struct jlink *jlink, int out_length)
|
|
{
|
|
int result;
|
|
|
|
if (out_length > JLINK_OUT_BUFFER_SIZE) {
|
|
LOG_ERROR("jlink_write illegal out_length=%d (max=%d)",
|
|
out_length, JLINK_OUT_BUFFER_SIZE);
|
|
return -1;
|
|
}
|
|
|
|
result = usb_bulk_write_ex(jlink->usb_handle, jlink_write_ep,
|
|
(char *)usb_out_buffer, out_length, JLINK_USB_TIMEOUT);
|
|
|
|
DEBUG_JTAG_IO("jlink_usb_write, out_length = %d, result = %d",
|
|
out_length, result);
|
|
|
|
jlink_debug_buffer(usb_out_buffer, out_length);
|
|
return result;
|
|
}
|
|
|
|
/* Read data from USB into in_buffer. */
|
|
static int jlink_usb_read(struct jlink *jlink, int expected_size)
|
|
{
|
|
int result = usb_bulk_read_ex(jlink->usb_handle, jlink_read_ep,
|
|
(char *)usb_in_buffer, expected_size, JLINK_USB_TIMEOUT);
|
|
|
|
DEBUG_JTAG_IO("jlink_usb_read, result = %d", result);
|
|
|
|
jlink_debug_buffer(usb_in_buffer, result);
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* Send a message and receive the reply - simple messages.
|
|
*
|
|
* @param jlink pointer to driver data
|
|
* @param out_length data length in @c usb_out_buffer
|
|
* @param in_length data length to be read to @c usb_in_buffer
|
|
*/
|
|
static int jlink_usb_io(struct jlink *jlink, int out_length, int in_length)
|
|
{
|
|
int result;
|
|
|
|
result = jlink_usb_write(jlink, out_length);
|
|
if (result != out_length) {
|
|
LOG_ERROR("usb_bulk_write failed (requested=%d, result=%d)",
|
|
out_length, result);
|
|
return ERROR_JTAG_DEVICE_ERROR;
|
|
}
|
|
|
|
result = jlink_usb_read(jlink, in_length);
|
|
if (result != in_length) {
|
|
LOG_ERROR("usb_bulk_read failed (requested=%d, result=%d)",
|
|
in_length, result);
|
|
return ERROR_JTAG_DEVICE_ERROR;
|
|
}
|
|
|
|
/*
|
|
* Section 4.2.4 IN-transaction:
|
|
* read dummy 0-byte packet if transaction size is
|
|
* multiple of 64 bytes but not max. size of 0x8000
|
|
*/
|
|
if ((in_length % 64) == 0 && in_length != 0x8000) {
|
|
char dummy_buffer;
|
|
result = usb_bulk_read_ex(jlink->usb_handle, jlink_read_ep,
|
|
&dummy_buffer, 1, JLINK_USB_TIMEOUT);
|
|
if (result != 0) {
|
|
LOG_ERROR("dummy byte read failed");
|
|
return ERROR_JTAG_DEVICE_ERROR;
|
|
}
|
|
}
|
|
return ERROR_OK;
|
|
}
|
|
|
|
#ifdef _DEBUG_USB_COMMS_
|
|
#define BYTES_PER_LINE 16
|
|
|
|
static void jlink_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
|