Patch from Dimitar Dimitrov adding support for Olimex ARM-JTAG-EW
authorduane <duane@b42882b7-edfa-0310-969c-e2dbd0fdcd60>
Sun, 8 Mar 2009 15:14:18 +0000 (15:14 +0000)
committerduane <duane@b42882b7-edfa-0310-969c-e2dbd0fdcd60>
Sun, 8 Mar 2009 15:14:18 +0000 (15:14 +0000)
git-svn-id: svn://svn.berlios.de/openocd/trunk@1402 b42882b7-edfa-0310-969c-e2dbd0fdcd60

configure.in
contrib/openocd.udev
doc/openocd.texi
src/jtag/Makefile.am
src/jtag/arm-jtag-ew.c [new file with mode: 0644]
src/jtag/jtag.c
src/target/interface/arm-jtag-ew.cfg [new file with mode: 0644]

index e6c6473..315c264 100644 (file)
@@ -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)
index f56cabd..d811cc0 100644 (file)
@@ -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"
 
index e1c0984..e39fdf6 100644 (file)
@@ -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
index 211cedc..717c435 100644 (file)
@@ -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 (file)
index 0000000..f5aa2c9
--- /dev/null
@@ -0,0 +1,903 @@
+// vim:ts=4 sw=4: 
+
+/***************************************************************************
+ *   Copyright (C) 2009 by Dimitar Dimitrov <dinuxbg@gmail.com>            *
+ *   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 <usb.h>
+#include <string.h>
+#include <ctype.h>
+
+/* 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
+
index ae51ebc..4e8b11d 100644 (file)
@@ -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,
@@ -198,6 +202,9 @@ jtag_interface_t *jtag_interfaces[] = {
 #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 (file)
index 0000000..1f9d3d9
--- /dev/null
@@ -0,0 +1,2 @@
+# Interface ARM-JTAG-EW
+interface arm-jtag-ew