From e211e4c6d2a3a59b914638506f7829ed763f251f Mon Sep 17 00:00:00 2001 From: duane Date: Sun, 8 Mar 2009 15:14:18 +0000 Subject: [PATCH] Patch from Dimitar Dimitrov adding support for Olimex ARM-JTAG-EW git-svn-id: svn://svn.berlios.de/openocd/trunk@1402 b42882b7-edfa-0310-969c-e2dbd0fdcd60 --- configure.in | 11 + contrib/openocd.udev | 3 + doc/openocd.texi | 12 + src/jtag/Makefile.am | 8 +- src/jtag/arm-jtag-ew.c | 903 +++++++++++++++++++++++++++ src/jtag/jtag.c | 7 + src/target/interface/arm-jtag-ew.cfg | 2 + 7 files changed, 945 insertions(+), 1 deletion(-) create mode 100644 src/jtag/arm-jtag-ew.c create mode 100644 src/target/interface/arm-jtag-ew.cfg diff --git a/configure.in b/configure.in index e6c6473e4..315c264d3 100644 --- a/configure.in +++ b/configure.in @@ -273,6 +273,10 @@ AC_ARG_ENABLE(rlink, AS_HELP_STRING([--enable-rlink], [Enable building support for the Raisonance RLink JTAG Programmer]), [build_rlink=$enableval], [build_rlink=no]) +AC_ARG_ENABLE(arm-jtag-ew, + AS_HELP_STRING([--enable-arm-jtag-ew], [Enable building support for the Olimex ARM-JTAG-EW Programmer]), + [build_armjtagew=$enableval], [build_armjtagew=no]) + case $host in *-cygwin*) is_win32=yes @@ -448,6 +452,12 @@ else AC_DEFINE(BUILD_RLINK, 0, [0 if you don't want the RLink JTAG driver.]) fi +if test $build_armjtagew = yes; then + AC_DEFINE(BUILD_ARMJTAGEW, 1, [1 if you want the ARM-JTAG-EW JTAG driver.]) +else + AC_DEFINE(BUILD_ARMJTAGEW, 0, [0 if you don't want the ARM-JTAG-EW JTAG driver.]) +fi + #-- Deal with MingW/Cygwin FTD2XX issues if test $is_win32 = yes; then @@ -661,6 +671,7 @@ AM_CONDITIONAL(OOCD_TRACE, test $build_oocd_trace = yes) AM_CONDITIONAL(JLINK, test $build_jlink = yes) AM_CONDITIONAL(VSLLINK, test $build_vsllink = yes) AM_CONDITIONAL(RLINK, test $build_rlink = yes) +AM_CONDITIONAL(ARMJTAGEW, test $build_armjtagew = yes) AM_CONDITIONAL(IS_CYGWIN, test $is_cygwin = yes) AM_CONDITIONAL(IS_MINGW, test $is_mingw = yes) AM_CONDITIONAL(IS_WIN32, test $is_win32 = yes) diff --git a/contrib/openocd.udev b/contrib/openocd.udev index f56cabd38..d811cc083 100644 --- a/contrib/openocd.udev +++ b/contrib/openocd.udev @@ -21,5 +21,8 @@ SYSFS{idVendor}=="1366", SYSFS{idProduct}=="0101", MODE="664", GROUP="plugdev" # Raisonance RLink SYSFS{idVendor}=="138e", SYSFS{idProduct}=="9000", MODE="664", GROUP="plugdev" +# Olimex ARM-JTAG-EW +SYSFS{idVendor}=="15ba", SYSFS{idProduct}=="001e", MODE="664", GROUP="plugdev" + LABEL="openocd_rules_end" diff --git a/doc/openocd.texi b/doc/openocd.texi index e1c0984db..e39fdf63b 100644 --- a/doc/openocd.texi +++ b/doc/openocd.texi @@ -265,6 +265,8 @@ should be included: @option{--enable-vsllink} @item @option{--enable-rlink} - Raisonance.com dongle. +@item +@option{--enable-arm-jtag-ew} - Olimex ARM-JTAG-EW dongle. @end itemize @section Parallel Port Dongles @@ -445,6 +447,9 @@ Raisonance has an adapter called @b{RLink}. It exists in a stripped-down form o @item @b{Versaloon-Link} @* Link: @url{http://www.simonqian.com/en/Versaloon} + +@item @b{ARM-JTAG-EW} +@* Link: @url{http://www.olimex.com/dev/arm-jtag-ew.html} @end itemize @section IBM PC Parallel Printer Port Based @@ -1144,6 +1149,10 @@ parport_port 0xc8b8 parport_cable wiggler jtag_speed 0 @end verbatim +@b{ARM-JTAG-EW} +@verbatim +interface arm-jtag-ew +@end verbatim @section Interface Conmmand The interface command tells OpenOCD what type of jtag dongle you are @@ -1192,6 +1201,9 @@ libusb. @item @b{vsllink} @* vsllink is part of Versaloon which is a versatile USB programmer. + +@item @b{arm-jtag-ew} +@* Olimex ARM-JTAG-EW usb adapter @comment - End parameters @end itemize @comment - End Interface diff --git a/src/jtag/Makefile.am b/src/jtag/Makefile.am index 211cedce9..717c435db 100644 --- a/src/jtag/Makefile.am +++ b/src/jtag/Makefile.am @@ -102,8 +102,14 @@ else VSLLINKFILES = endif +if ARMJTAGEW +ARMJTAGEWFILES = arm-jtag-ew.c +else +ARMJTAGEWFILES = +endif + libjtag_a_SOURCES = jtag.c $(BITBANGFILES) $(PARPORTFILES) $(DUMMYFILES) $(FT2232FILES) $(AMTJTAGACCELFILES) $(EP93XXFILES) \ - $(AT91RM9200FILES) $(GW16012FILES) $(BITQFILES) $(PRESTOFILES) $(USBPROGFILES) $(ECOSBOARDFILES) $(JLINKFILES) $(RLINKFILES) $(VSLLINKFILES) + $(AT91RM9200FILES) $(GW16012FILES) $(BITQFILES) $(PRESTOFILES) $(USBPROGFILES) $(ECOSBOARDFILES) $(JLINKFILES) $(RLINKFILES) $(VSLLINKFILES) $(ARMJTAGEWFILES) noinst_HEADERS = bitbang.h jtag.h bitq.h rlink/dtc_cmd.h rlink/ep1_cmd.h rlink/rlink.h rlink/st7.h diff --git a/src/jtag/arm-jtag-ew.c b/src/jtag/arm-jtag-ew.c new file mode 100644 index 000000000..f5aa2c957 --- /dev/null +++ b/src/jtag/arm-jtag-ew.c @@ -0,0 +1,903 @@ +// vim:ts=4 sw=4: + +/*************************************************************************** + * Copyright (C) 2009 by Dimitar Dimitrov * + * based on Dominic Rath's and Benedikt Sauter's usbprog.c * + * * + * This program is free software; you can redistribute it and/or modify * + * it under the terms of the GNU General Public License as published by * + * the Free Software Foundation; either version 2 of the License, or * + * (at your option) any later version. * + * * + * This program is distributed in the hope that it will be useful, * + * but WITHOUT ANY WARRANTY; without even the implied warranty of * + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * + * GNU General Public License for more details. * + * * + * You should have received a copy of the GNU General Public License * + * along with this program; if not, write to the * + * Free Software Foundation, Inc., * + * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * + ***************************************************************************/ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include "replacements.h" + +#include "jtag.h" +#include +#include +#include + +/* system includes */ + +#include "log.h" + +/* enable this to debug communication + */ +#if 1 +#define _DEBUG_USB_COMMS_ +#define _DEBUG_JTAG_IO_ +#endif + +#ifdef _DEBUG_JTAG_IO_ +#define DEBUG_JTAG_IO(expr ...) LOG_DEBUG(expr) +#else +#define DEBUG_JTAG_IO(expr ...) +#endif + +#define USB_VID 0x15ba +#define USB_PID 0x001e + +#define ARMJTAGEW_EPT_BULK_OUT 0x01u +#define ARMJTAGEW_EPT_BULK_IN 0x82u + +#define ARMJTAGEW_USB_TIMEOUT 2000 + +#define ARMJTAGEW_IN_BUFFER_SIZE (4*1024) +#define ARMJTAGEW_OUT_BUFFER_SIZE (4*1024) + + +/* USB command request codes. */ +#define CMD_GET_VERSION 0x00 +#define CMD_SELECT_DPIMPL 0x10 +#define CMD_SET_TCK_FREQUENCY 0x11 +#define CMD_GET_TCK_FREQUENCY 0x12 +#define CMD_MEASURE_MAX_TCK_FREQ 0x15 +#define CMD_MEASURE_RTCK_RESPONSE 0x16 +#define CMD_TAP_SHIFT 0x17 +#define CMD_SET_TAPHW_STATE 0x20 +#define CMD_GET_TAPHW_STATE 0x21 +#define CMD_TGPWR_SETUP 0x22 + +/* Global USB buffers */ +static u8 usb_in_buffer[ARMJTAGEW_IN_BUFFER_SIZE]; +static u8 usb_out_buffer[ARMJTAGEW_OUT_BUFFER_SIZE]; + +/* External interface functions */ +int armjtagew_execute_queue(void); +int armjtagew_speed(int speed); +int armjtagew_khz(int khz, int *jtag_speed); +int armjtagew_register_commands(struct command_context_s *cmd_ctx); +int armjtagew_init(void); +int armjtagew_quit(void); + +/* CLI command handler functions */ +int armjtagew_handle_armjtagew_info_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc); + +/* Queue command functions */ +void armjtagew_end_state(tap_state_t state); +void armjtagew_state_move(void); +void armjtagew_path_move(int num_states, tap_state_t *path); +void armjtagew_runtest(int num_cycles); +void armjtagew_scan(int ir_scan, enum scan_type type, u8 *buffer, int scan_size, scan_command_t *command); +void armjtagew_reset(int trst, int srst); +void armjtagew_simple_command(u8 command); +int armjtagew_get_status(void); + +/* tap buffer functions */ +void armjtagew_tap_init(void); +int armjtagew_tap_execute(void); +void armjtagew_tap_ensure_space(int scans, int bits); +void armjtagew_tap_append_step(int tms, int tdi); +void armjtagew_tap_append_scan(int length, u8 *buffer, scan_command_t *command); + +/* ARM-JTAG-EW lowlevel functions */ +typedef struct armjtagew_jtag +{ + struct usb_dev_handle* usb_handle; +} armjtagew_jtag_t; + +armjtagew_jtag_t *armjtagew_usb_open(void); +void armjtagew_usb_close(armjtagew_jtag_t *armjtagew_jtag); +int armjtagew_usb_message(armjtagew_jtag_t *armjtagew_jtag, int out_length, int in_length); +int armjtagew_usb_write(armjtagew_jtag_t *armjtagew_jtag, int out_length); +int armjtagew_usb_read(armjtagew_jtag_t *armjtagew_jtag, int exp_in_length); + +/* helper functions */ +int armjtagew_get_version_info(void); + +#ifdef _DEBUG_USB_COMMS_ +void armjtagew_debug_buffer(u8 *buffer, int length); +#endif + +armjtagew_jtag_t* armjtagew_jtag_handle; + + + +/***************************************************************************/ +/* External interface implementation */ + +jtag_interface_t armjtagew_interface = +{ + .name = "arm-jtag-ew", + .execute_queue = armjtagew_execute_queue, + .speed = armjtagew_speed, + .khz = armjtagew_khz, + .register_commands = armjtagew_register_commands, + .init = armjtagew_init, + .quit = armjtagew_quit +}; + + +int armjtagew_execute_queue(void) +{ + jtag_command_t *cmd = jtag_command_queue; + int scan_size; + enum scan_type type; + u8 *buffer; + + while (cmd != NULL) + { + switch (cmd->type) + { + case JTAG_END_STATE: + DEBUG_JTAG_IO("end_state: %i", cmd->cmd.end_state->end_state); + + if (cmd->cmd.end_state->end_state != -1) + { + armjtagew_end_state(cmd->cmd.end_state->end_state); + } + break; + + case JTAG_RUNTEST: + DEBUG_JTAG_IO( "runtest %i cycles, end in %i", cmd->cmd.runtest->num_cycles, \ + cmd->cmd.runtest->end_state); + + if (cmd->cmd.runtest->end_state != -1) + { + armjtagew_end_state(cmd->cmd.runtest->end_state); + } + armjtagew_runtest(cmd->cmd.runtest->num_cycles); + break; + + case JTAG_STATEMOVE: + DEBUG_JTAG_IO("statemove end in %i", cmd->cmd.statemove->end_state); + + if (cmd->cmd.statemove->end_state != -1) + { + armjtagew_end_state(cmd->cmd.statemove->end_state); + } + armjtagew_state_move(); + break; + + case JTAG_PATHMOVE: + DEBUG_JTAG_IO("pathmove: %i states, end in %i", \ + cmd->cmd.pathmove->num_states, \ + cmd->cmd.pathmove->path[cmd->cmd.pathmove->num_states - 1]); + + armjtagew_path_move(cmd->cmd.pathmove->num_states, cmd->cmd.pathmove->path); + break; + + case JTAG_SCAN: + DEBUG_JTAG_IO("scan end in %i", cmd->cmd.scan->end_state); + + if (cmd->cmd.scan->end_state != -1) + { + armjtagew_end_state(cmd->cmd.scan->end_state); + } + + scan_size = jtag_build_buffer(cmd->cmd.scan, &buffer); + DEBUG_JTAG_IO("scan input, length = %d", scan_size); + +#ifdef _DEBUG_USB_COMMS_ + armjtagew_debug_buffer(buffer, (scan_size + 7) / 8); +#endif + type = jtag_scan_type(cmd->cmd.scan); + armjtagew_scan(cmd->cmd.scan->ir_scan, type, buffer, scan_size, cmd->cmd.scan); + break; + + case JTAG_RESET: + DEBUG_JTAG_IO("reset trst: %i srst %i", cmd->cmd.reset->trst, cmd->cmd.reset->srst); + + armjtagew_tap_execute(); + + if (cmd->cmd.reset->trst == 1) + { + tap_set_state(TAP_RESET); + } + armjtagew_reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst); + break; + + case JTAG_SLEEP: + DEBUG_JTAG_IO("sleep %i", cmd->cmd.sleep->us); + armjtagew_tap_execute(); + jtag_sleep(cmd->cmd.sleep->us); + break; + + default: + LOG_ERROR("BUG: unknown JTAG command type encountered"); + exit(-1); + } + cmd = cmd->next; + } + + return armjtagew_tap_execute(); +} + + +/* Sets speed in kHz. */ +int armjtagew_speed(int speed) +{ + int result; + int speed_real; + + + usb_out_buffer[0] = CMD_SET_TCK_FREQUENCY; + buf_set_u32(usb_out_buffer+1, 0, 32, speed); + + result = armjtagew_usb_message(armjtagew_jtag_handle, 4, 4); + + if (result < 0) + { + LOG_ERROR("ARM-JTAG-EW setting speed failed (%d)", result); + return ERROR_JTAG_DEVICE_ERROR; + } + + usb_out_buffer[0] = CMD_GET_TCK_FREQUENCY; + result = armjtagew_usb_message(armjtagew_jtag_handle, 1, 4); + speed_real = (int)buf_get_u32(usb_in_buffer,0,32); + if(result < 0) + { + LOG_ERROR("ARM-JTAG-EW getting speed failed (%d)", result); + return ERROR_JTAG_DEVICE_ERROR; + } + else + { + LOG_INFO("Requested speed %dkHz, emulator reported %dkHz.", speed, speed_real); + } + + return ERROR_OK; +} + + +int armjtagew_khz(int khz, int *jtag_speed) +{ + *jtag_speed = khz; + + return ERROR_OK; +} + +int armjtagew_register_commands(struct command_context_s *cmd_ctx) +{ + register_command(cmd_ctx, NULL, "armjtagew_info", armjtagew_handle_armjtagew_info_command, COMMAND_EXEC, + "query armjtagew info"); + return ERROR_OK; +} + +int armjtagew_init(void) +{ + int check_cnt; + + armjtagew_jtag_handle = armjtagew_usb_open(); + + if (armjtagew_jtag_handle == 0) + { + LOG_ERROR("Cannot find ARM-JTAG-EW Interface! Please check connection and permissions."); + return ERROR_JTAG_INIT_FAILED; + } + + check_cnt = 0; + while (check_cnt < 3) + { + if (armjtagew_get_version_info() == ERROR_OK) + { + /* attempt to get status */ + armjtagew_get_status(); + break; + } + + check_cnt++; + } + + if (check_cnt == 3) + { + LOG_INFO("ARM-JTAG-EW initial read failed, don't worry"); + } + + LOG_INFO("ARM-JTAG-EW JTAG Interface ready"); + + armjtagew_reset(0, 0); + armjtagew_tap_init(); + + return ERROR_OK; +} + +int armjtagew_quit(void) +{ + armjtagew_usb_close(armjtagew_jtag_handle); + return ERROR_OK; +} + +/***************************************************************************/ +/* Queue command implementations */ + +void armjtagew_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. */ +void armjtagew_state_move(void) +{ + int i; + int tms = 0; + u8 tms_scan = tap_get_tms_path(tap_get_state(), tap_get_end_state()); + + for (i = 0; i < 7; i++) + { + tms = (tms_scan >> i) & 1; + armjtagew_tap_append_step(tms, 0); + } + + tap_set_state(tap_get_end_state()); +} + +void armjtagew_path_move(int num_states, tap_state_t *path) +{ + int i; + + for (i = 0; i < num_states; i++) + { + /* + * TODO: The ARM-JTAG-EW hardware delays TDI with 3 TCK cycles when in RTCK mode. + * Either handle that here, or update the documentation with examples + * how to fix that in the configuration files. + */ + if (path[i] == tap_state_transition(tap_get_state(), false)) + { + armjtagew_tap_append_step(0, 0); + } + else if (path[i] == tap_state_transition(tap_get_state(), true)) + { + armjtagew_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()); +} + +void armjtagew_runtest(int num_cycles) +{ + int i; + + tap_state_t saved_end_state = tap_get_end_state(); + + /* only do a state_move when we're not already in IDLE */ + if (tap_get_state() != TAP_IDLE) + { + armjtagew_end_state(TAP_IDLE); + armjtagew_state_move(); + } + + /* execute num_cycles */ + for (i = 0; i < num_cycles; i++) + { + armjtagew_tap_append_step(0, 0); + } + + /* finish in end_state */ + armjtagew_end_state(saved_end_state); + if (tap_get_state() != tap_get_end_state()) + { + armjtagew_state_move(); + } +} + +void armjtagew_scan(int ir_scan, enum scan_type type, u8 *buffer, int scan_size, scan_command_t *command) +{ + tap_state_t saved_end_state; + + armjtagew_tap_ensure_space(1, scan_size + 8); + + saved_end_state = tap_get_end_state(); + + /* Move to appropriate scan state */ + armjtagew_end_state(ir_scan ? TAP_IRSHIFT : TAP_DRSHIFT); + + armjtagew_state_move(); + armjtagew_end_state(saved_end_state); + + /* Scan */ + armjtagew_tap_append_scan(scan_size, buffer, command); + + /* We are in Exit1, go to Pause */ + armjtagew_tap_append_step(0, 0); + + tap_set_state(ir_scan ? TAP_IRPAUSE : TAP_DRPAUSE); + + if (tap_get_state() != tap_get_end_state()) + { + armjtagew_state_move(); + } +} + +void armjtagew_reset(int trst, int srst) +{ + const u8 trst_mask = (1u<<5); + const u8 srst_mask = (1u<<6); + u8 val = 0; + u8 outp_en = 0; + u8 change_mask = 0; + int result; + + LOG_DEBUG("trst: %i, srst: %i", trst, srst); + + if (srst == 0) + { + val |= srst_mask; + outp_en &= ~srst_mask; /* tristate */ + change_mask |= srst_mask; + } + else if (srst == 1) + { + val &= ~srst_mask; + outp_en |= srst_mask; + change_mask |= srst_mask; + } + + if (trst == 0) + { + val |= trst_mask; + outp_en &= ~trst_mask; /* tristate */ + change_mask |= trst_mask; + } + else if (trst == 1) + { + val &= ~trst_mask; + outp_en |= trst_mask; + change_mask |= trst_mask; + } + + usb_out_buffer[0] = CMD_SET_TAPHW_STATE; + usb_out_buffer[1] = val; + usb_out_buffer[2] = outp_en; + usb_out_buffer[3] = change_mask; + result = armjtagew_usb_write(armjtagew_jtag_handle, 4); + if (result != 4) + { + LOG_ERROR("ARM-JTAG-EW TRST/SRST pin set failed failed (%d)", result); + } +} + + +int armjtagew_get_status(void) +{ + int result; + + usb_out_buffer[0] = CMD_GET_TAPHW_STATE; + result = armjtagew_usb_message(armjtagew_jtag_handle, 1, 12); + + if (result == 0) + { + unsigned int u_tg = buf_get_u32(usb_in_buffer, 0, 16); + LOG_INFO("U_tg = %d mV, U_aux = %d mV, U_tgpwr = %d mV, I_tgpwr = %d mA, D1 = %d, Target power %s %s\n", \ + buf_get_u32(usb_in_buffer + 0, 0, 16), \ + buf_get_u32(usb_in_buffer + 2, 0, 16), \ + buf_get_u32(usb_in_buffer + 4, 0, 16), \ + buf_get_u32(usb_in_buffer + 6, 0, 16), \ + usb_in_buffer[9], \ + usb_in_buffer[11] ? "OVERCURRENT" : "OK", \ + usb_in_buffer[10] ? "enabled" : "disabled"); + + if (u_tg < 1500) + { + LOG_ERROR("Vref too low. Check Target Power\n"); + } + } + else + { + LOG_ERROR("ARM-JTAG-EW command CMD_GET_TAPHW_STATE failed (%d)\n", result); + } + + return ERROR_OK; +} + +int armjtagew_get_version_info(void) +{ + int result; + char sn[16]; + char auxinfo[257]; + + /* query hardware version */ + usb_out_buffer[0] = CMD_GET_VERSION; + result = armjtagew_usb_message(armjtagew_jtag_handle, 1, 4+15+256); + + if (result != 0) + { + LOG_ERROR("ARM-JTAG-EW command CMD_GET_VERSION failed (%d)\n", result); + return ERROR_JTAG_DEVICE_ERROR; + } + + + memcpy(sn, usb_in_buffer+4, 15); + sn[15] = '\0'; + memcpy(auxinfo, usb_in_buffer+4+15, 256); + auxinfo[256] = '\0'; + + LOG_INFO("ARM-JTAG-EW firmware version %d.%d, hardware revision %c, SN=%s, Additional info: %s", \ + usb_in_buffer[1], usb_in_buffer[0], \ + isgraph(usb_in_buffer[2]) ? usb_in_buffer[2] : 'X', \ + sn, auxinfo); + return ERROR_OK; +} + +int armjtagew_handle_armjtagew_info_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) +{ + if (armjtagew_get_version_info() == ERROR_OK) + { + /* attempt to get status */ + armjtagew_get_status(); + } + + return ERROR_OK; +} + +/***************************************************************************/ +/* ARM-JTAG-EW tap functions */ + +/* 2048 is the max value we can use here */ +#define ARMJTAGEW_TAP_BUFFER_SIZE 2048 + +static int tap_length; +static u8 tms_buffer[ARMJTAGEW_TAP_BUFFER_SIZE]; +static u8 tdi_buffer[ARMJTAGEW_TAP_BUFFER_SIZE]; +static u8 tdo_buffer[ARMJTAGEW_TAP_BUFFER_SIZE]; + +typedef struct +{ + int first; /* First bit position in tdo_buffer to read */ + int length; /* Number of bits to read */ + scan_command_t *command; /* Corresponding scan command */ + u8 *buffer; +} pending_scan_result_t; + +#define MAX_PENDING_SCAN_RESULTS 256 + +static int pending_scan_results_length; +static pending_scan_result_t pending_scan_results_buffer[MAX_PENDING_SCAN_RESULTS]; + +static int last_tms; + +void armjtagew_tap_init(void) +{ + tap_length = 0; + pending_scan_results_length = 0; +} + +void armjtagew_tap_ensure_space(int scans, int bits) +{ + int available_scans = MAX_PENDING_SCAN_RESULTS - pending_scan_results_length; + int available_bits = ARMJTAGEW_TAP_BUFFER_SIZE * 8 - tap_length; + + if (scans > available_scans || bits > available_bits) + { + armjtagew_tap_execute(); + } +} + +void armjtagew_tap_append_step(int tms, int tdi) +{ + last_tms = tms; + int index = tap_length / 8; + + if (index < ARMJTAGEW_TAP_BUFFER_SIZE) + { + int bit_index = tap_length % 8; + u8 bit = 1 << bit_index; + + if (tms) + { + tms_buffer[index] |= bit; + } + else + { + tms_buffer[index] &= ~bit; + } + + if (tdi) + { + tdi_buffer[index] |= bit; + } + else + { + tdi_buffer[index] &= ~bit; + } + + tap_length++; + } + else + { + LOG_ERROR("armjtagew_tap_append_step, overflow"); + } +} + +void armjtagew_tap_append_scan(int length, u8 *buffer, scan_command_t *command) +{ + pending_scan_result_t *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++) + { + armjtagew_tap_append_step((i < length-1 ? 0 : 1), (buffer[i/8] >> (i%8)) & 1); + } + 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. */ +int armjtagew_tap_execute(void) +{ + int byte_length; + int tms_offset; + int tdi_offset; + int i; + int result; + + if (tap_length > 0) + { + /* Pad last byte so that tap_length is divisible by 8 */ + while (tap_length % 8 != 0) + { + /* More of the last TMS value keeps us in the same state, + * analogous to free-running JTAG interfaces. */ + armjtagew_tap_append_step(last_tms, 0); + } + + byte_length = tap_length / 8; + + usb_out_buffer[0] = CMD_TAP_SHIFT; + buf_set_u32(usb_out_buffer+1, 0, 16, byte_length); + + tms_offset = 3; + for (i = 0; i < byte_length; i++) + { + usb_out_buffer[tms_offset + i] = flip_u32(tms_buffer[i],8); + } + + tdi_offset = tms_offset + byte_length; + for (i = 0; i < byte_length; i++) + { + usb_out_buffer[tdi_offset + i] = flip_u32(tdi_buffer[i],8); + } + + result = armjtagew_usb_message(armjtagew_jtag_handle, 3 + 2 * byte_length, byte_length + 4); + + if (result == 0) + { + int stat; + + stat = (int)buf_get_u32(usb_in_buffer + byte_length, 0, 32); + if(stat) { + LOG_ERROR("armjtagew_tap_execute, emulator returned error code %d for a CMD_TAP_SHIFT command", stat); + return ERROR_JTAG_QUEUE_FAILED; + } + + for (i = 0; i < byte_length; i++) + { + tdo_buffer[i] = flip_u32(usb_in_buffer[i],8); + } + + for (i = 0; i < pending_scan_results_length; i++) + { + pending_scan_result_t *pending_scan_result = &pending_scan_results_buffer[i]; + u8 *buffer = pending_scan_result->buffer; + int length = pending_scan_result->length; + int first = pending_scan_result->first; + scan_command_t *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); + +#ifdef _DEBUG_USB_COMMS_ + armjtagew_debug_buffer(buffer, byte_length); +#endif + + if (jtag_read_buffer(buffer, command) != ERROR_OK) + { + armjtagew_tap_init(); + return ERROR_JTAG_QUEUE_FAILED; + } + + if (pending_scan_result->buffer != NULL) + { + free(pending_scan_result->buffer); + } + } + } + else + { + LOG_ERROR("armjtagew_tap_execute, wrong result %d, expected %d", result, byte_length); + return ERROR_JTAG_QUEUE_FAILED; + } + + armjtagew_tap_init(); + } + + return ERROR_OK; +} + +/*****************************************************************************/ +/* JLink USB low-level functions */ + +armjtagew_jtag_t* armjtagew_usb_open() +{ + struct usb_bus *busses; + struct usb_bus *bus; + struct usb_device *dev; + + armjtagew_jtag_t *result; + + result = (armjtagew_jtag_t*) malloc(sizeof(armjtagew_jtag_t)); + + usb_init(); + usb_find_busses(); + usb_find_devices(); + + busses = usb_get_busses(); + + /* find armjtagew_jtag device in usb bus */ + + for (bus = busses; bus; bus = bus->next) + { + for (dev = bus->devices; dev; dev = dev->next) + { + if ((dev->descriptor.idVendor == USB_VID) && (dev->descriptor.idProduct == USB_PID)) + { + result->usb_handle = usb_open(dev); + +#if 0 + /* usb_set_configuration required under win32 */ + usb_set_configuration(result->usb_handle, dev->config[0].bConfigurationValue); +#endif + usb_claim_interface(result->usb_handle, 0); + +#if 0 + /* + * This makes problems under Mac OS X. And is not needed + * under Windows. Hopefully this will not break a linux build + */ + usb_set_altinterface(result->usb_handle, 0); +#endif + return result; + } + } + } + + free(result); + return NULL; +} + +void armjtagew_usb_close(armjtagew_jtag_t *armjtagew_jtag) +{ + usb_close(armjtagew_jtag->usb_handle); + free(armjtagew_jtag); +} + +/* Send a message and receive the reply. */ +int armjtagew_usb_message(armjtagew_jtag_t *armjtagew_jtag, int out_length, int in_length) +{ + int result; + + result = armjtagew_usb_write(armjtagew_jtag, out_length); + if (result == out_length) + { + result = armjtagew_usb_read(armjtagew_jtag, in_length); + if (result != in_length) + { + LOG_ERROR("usb_bulk_read failed (requested=%d, result=%d)", in_length, result); + return -1; + } + } + else + { + LOG_ERROR("usb_bulk_write failed (requested=%d, result=%d)", out_length, result); + return -1; + } + return 0; +} + +/* Write data from out_buffer to USB. */ +int armjtagew_usb_write(armjtagew_jtag_t *armjtagew_jtag, int out_length) +{ + int result; + + if (out_length > ARMJTAGEW_OUT_BUFFER_SIZE) + { + LOG_ERROR("armjtagew_jtag_write illegal out_length=%d (max=%d)", out_length, ARMJTAGEW_OUT_BUFFER_SIZE); + return -1; + } + + result = usb_bulk_write(armjtagew_jtag->usb_handle, ARMJTAGEW_EPT_BULK_OUT, \ + (char*)usb_out_buffer, out_length, ARMJTAGEW_USB_TIMEOUT); + + DEBUG_JTAG_IO("armjtagew_usb_write, out_length = %d, result = %d", out_length, result); + +#ifdef _DEBUG_USB_COMMS_ + armjtagew_debug_buffer(usb_out_buffer, out_length); +#endif + return result; +} + +/* Read data from USB into in_buffer. */ +int armjtagew_usb_read(armjtagew_jtag_t *armjtagew_jtag, int exp_in_length) +{ + int result = usb_bulk_read(armjtagew_jtag->usb_handle, ARMJTAGEW_EPT_BULK_IN, \ + (char*)usb_in_buffer, exp_in_length, ARMJTAGEW_USB_TIMEOUT); + + DEBUG_JTAG_IO("armjtagew_usb_read, result = %d", result); + +#ifdef _DEBUG_USB_COMMS_ + armjtagew_debug_buffer(usb_in_buffer, result); +#endif + return result; +} + + +#ifdef _DEBUG_USB_COMMS_ +#define BYTES_PER_LINE 16 + +void armjtagew_debug_buffer(u8 *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(line); + } +} +#endif + diff --git a/src/jtag/jtag.c b/src/jtag/jtag.c index ae51ebc16..4e8b11d75 100644 --- a/src/jtag/jtag.c +++ b/src/jtag/jtag.c @@ -155,6 +155,10 @@ static int hasKHz = 0; extern jtag_interface_t rlink_interface; #endif +#if BUILD_ARMJTAGEW == 1 + extern jtag_interface_t armjtagew_interface; +#endif + jtag_interface_t *jtag_interfaces[] = { #if BUILD_ECOSBOARD == 1 &zy1000_interface, @@ -197,6 +201,9 @@ jtag_interface_t *jtag_interfaces[] = { #endif #if BUILD_RLINK == 1 &rlink_interface, +#endif +#if BUILD_ARMJTAGEW == 1 + &armjtagew_interface, #endif NULL, }; diff --git a/src/target/interface/arm-jtag-ew.cfg b/src/target/interface/arm-jtag-ew.cfg new file mode 100644 index 000000000..1f9d3d99c --- /dev/null +++ b/src/target/interface/arm-jtag-ew.cfg @@ -0,0 +1,2 @@ +# Interface ARM-JTAG-EW +interface arm-jtag-ew