8f6d142b95
https://lists.berlios.de/pipermail/openocd-development/2008-January/000678.html (thanks to Øyvind for the patch) git-svn-id: svn://svn.berlios.de/openocd/trunk@286 b42882b7-edfa-0310-969c-e2dbd0fdcd60
743 lines
16 KiB
C
743 lines
16 KiB
C
/***************************************************************************
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* Copyright (C) 2007 by Pavel Chromy *
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* chromy@asix.cz *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#if IS_CYGWIN == 1
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#include "windows.h"
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#undef ERROR
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#endif
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#include "replacements.h"
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/* project specific includes */
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#include "log.h"
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#include "types.h"
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#include "jtag.h"
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#include "configuration.h"
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#include "time_support.h"
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#include "bitq.h"
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/* system includes */
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/time.h>
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#include <time.h>
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/* PRESTO access library includes */
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#if BUILD_PRESTO_FTD2XX == 1
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#include <ftd2xx.h>
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#elif BUILD_PRESTO_LIBFTDI == 1
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#include <ftdi.h>
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#endif
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int presto_jtag_speed(int speed);
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int presto_jtag_register_commands(struct command_context_s *cmd_ctx);
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int presto_jtag_init(void);
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int presto_jtag_quit(void);
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jtag_interface_t presto_interface =
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{
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.name = "presto",
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.execute_queue = bitq_execute_queue,
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.speed = presto_jtag_speed,
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.register_commands = presto_jtag_register_commands,
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.init = presto_jtag_init,
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.quit = presto_jtag_quit,
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};
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int presto_bitq_out(int tms, int tdi, int tdo_req);
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int presto_bitq_flush(void);
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int presto_bitq_sleep(unsigned long us);
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int presto_bitq_reset(int trst, int srst);
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int presto_bitq_in_rdy(void);
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int presto_bitq_in(void);
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bitq_interface_t presto_bitq =
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{
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.out = presto_bitq_out,
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.flush = presto_bitq_flush,
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.sleep = presto_bitq_sleep,
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.reset = presto_bitq_reset,
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.in_rdy = presto_bitq_in_rdy,
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.in = presto_bitq_in,
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};
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/* -------------------------------------------------------------------------- */
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#define FT_DEVICE_NAME_LEN 64
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#define FT_DEVICE_SERNUM_LEN 64
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#define PRESTO_VID_PID 0x0403f1a0
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#define PRESTO_VID (0x0403)
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#define PRESTO_PID (0xf1a0)
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#define BUFFER_SIZE (64*62)
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typedef struct presto_s
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{
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#if BUILD_PRESTO_FTD2XX == 1
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FT_HANDLE handle;
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FT_STATUS status;
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#elif BUILD_PRESTO_LIBFTDI == 1
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struct ftdi_context ftdic;
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int retval;
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#endif
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char serial[FT_DEVICE_SERNUM_LEN];
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u8 buff_out[BUFFER_SIZE];
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int buff_out_pos;
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u8 buff_in[BUFFER_SIZE];
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int buff_in_exp; /* expected in buffer length */
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int buff_in_len; /* length of data received */
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int buff_in_pos;
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unsigned long total_out;
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unsigned long total_in;
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int jtag_tms; /* last tms state */
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int jtag_tck; /* last tck state */
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int jtag_tdi_data;
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int jtag_tdi_count;
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} presto_t;
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presto_t presto_state;
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presto_t *presto = &presto_state;
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u8 presto_init_seq[] =
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{
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0x80, 0xA0, 0xA8, 0xB0, 0xC0, 0xE0
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};
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int presto_write(u8 *buf, int size, u32* bytes_written)
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{
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#if BUILD_PRESTO_FTD2XX == 1
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DWORD dw_bytes_written;
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if ((presto->status = FT_Write(presto->handle, buf, size, &dw_bytes_written)) != FT_OK)
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{
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*bytes_written = dw_bytes_written;
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ERROR("FT_Write returned: %lu", presto->status);
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return ERROR_JTAG_DEVICE_ERROR;
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}
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else
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{
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*bytes_written = dw_bytes_written;
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return ERROR_OK;
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}
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#elif BUILD_PRESTO_LIBFTDI == 1
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if ((presto->retval = ftdi_write_data(&presto->ftdic, buf, size)) < 0)
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{
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*bytes_written = 0;
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ERROR("ftdi_write_data: %s", ftdi_get_error_string(&presto->ftdic));
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return ERROR_JTAG_DEVICE_ERROR;
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}
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else
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{
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*bytes_written = retval;
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return ERROR_OK;
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}
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#endif
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}
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int presto_read(u8* buf, int size, u32* bytes_read)
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{
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#if BUILD_PRESTO_FTD2XX == 1
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DWORD dw_bytes_read;
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int timeout = 5;
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*bytes_read = 0;
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while ((*bytes_read < size) && timeout--)
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{
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if ((presto->status = FT_Read(presto->handle, buf + *bytes_read, size -
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*bytes_read, &dw_bytes_read)) != FT_OK)
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{
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*bytes_read = 0;
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ERROR("FT_Read returned: %lu", presto->status);
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return ERROR_JTAG_DEVICE_ERROR;
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}
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*bytes_read += dw_bytes_read;
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}
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#elif BUILD_PRESTO_LIBFTDI == 1
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int timeout = 100;
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*bytes_read = 0;
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while ((*bytes_read < size) && timeout--)
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{
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if ((presto->retval = ftdi_read_data(&presto->ftdic, buf + *bytes_read, size - *bytes_read)) < 0)
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{
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*bytes_read = 0;
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ERROR("ftdi_read_data: %s", ftdi_get_error_string(&presto->ftdic));
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return ERROR_JTAG_DEVICE_ERROR;
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}
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*bytes_read += retval;
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}
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#endif
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if (*bytes_read < size)
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{
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ERROR("couldn't read the requested number of bytes from PRESTO (%i < %i)", *bytes_read, size);
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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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#if BUILD_PRESTO_FTD2XX == 1
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int presto_open_ftd2xx(char *req_serial)
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{
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int i;
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DWORD numdevs;
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DWORD vidpid;
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char devname[FT_DEVICE_NAME_LEN];
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FT_DEVICE device;
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BYTE presto_data;
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unsigned long ftbytes;
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presto->handle = (FT_HANDLE)INVALID_HANDLE_VALUE;
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#if IS_WIN32 == 0
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/* Add non-standard Vid/Pid to the linux driver */
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if ((presto->status = FT_SetVIDPID(PRESTO_VID, PRESTO_PID)) != FT_OK)
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{
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ERROR("couldn't add PRESTO VID/PID");
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exit(-1);
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}
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#endif
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if ((presto->status = FT_ListDevices(&numdevs, NULL, FT_LIST_NUMBER_ONLY)) != FT_OK)
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{
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ERROR("FT_ListDevices failed: %i", (int)presto->status);
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return ERROR_JTAG_INIT_FAILED;
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}
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for (i = 0; i < numdevs; i++)
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{
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if (FT_Open(i, &(presto->handle)) != FT_OK)
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{
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ERROR("FT_Open failed: %i", (int)presto->status);
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continue;
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}
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if (FT_GetDeviceInfo(presto->handle, &device, &vidpid,
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presto->serial, devname, NULL) == FT_OK)
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{
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if (vidpid == PRESTO_VID_PID
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&& (req_serial == NULL || !strcmp(presto->serial, req_serial)))
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break;
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}
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FT_Close(presto->handle);
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presto->handle = (FT_HANDLE)INVALID_HANDLE_VALUE;
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}
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if (presto->handle == (FT_HANDLE)INVALID_HANDLE_VALUE)
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return ERROR_JTAG_INIT_FAILED;
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if ((presto->status = FT_SetLatencyTimer(presto->handle, 1)) != FT_OK)
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return ERROR_JTAG_INIT_FAILED;
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if ((presto->status = FT_SetTimeouts(presto->handle, 100, 0)) != FT_OK)
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return ERROR_JTAG_INIT_FAILED;
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if ((presto->status = FT_Purge(presto->handle, FT_PURGE_TX | FT_PURGE_RX)) != FT_OK)
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return ERROR_JTAG_INIT_FAILED;
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presto_data = 0xD0;
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if ((presto->status = FT_Write(presto->handle, &presto_data, 1, &ftbytes)) != FT_OK)
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return ERROR_JTAG_INIT_FAILED;
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if ((presto->status = FT_Read(presto->handle, &presto_data, 1, &ftbytes)) != FT_OK)
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return ERROR_JTAG_INIT_FAILED;
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if (ftbytes!=1)
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{
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if ((presto->status = FT_SetBitMode(presto->handle, 0x80, 1)) != FT_OK)
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return ERROR_JTAG_INIT_FAILED;
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if ((presto->status = FT_Purge(presto->handle, FT_PURGE_TX | FT_PURGE_RX)) != FT_OK)
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return ERROR_JTAG_INIT_FAILED ;
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if ((presto->status = FT_SetBaudRate(presto->handle, 9600)) != FT_OK)
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return ERROR_JTAG_INIT_FAILED;
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presto_data = 0;
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for (i = 0; i < 4 * 62; i++)
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if ((presto->status=FT_Write(presto->handle, &presto_data, 1, &ftbytes)) != FT_OK)
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return ERROR_JTAG_INIT_FAILED;
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usleep(100000);
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if ((presto->status = FT_SetBitMode(presto->handle, 0x00, 0)) != FT_OK)
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return ERROR_JTAG_INIT_FAILED;
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if ((presto->status = FT_Purge(presto->handle, FT_PURGE_TX | FT_PURGE_RX)) != FT_OK)
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return ERROR_JTAG_INIT_FAILED;
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presto_data = 0xD0;
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if ((presto->status = FT_Write(presto->handle, &presto_data, 1, &ftbytes)) != FT_OK)
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return ERROR_JTAG_INIT_FAILED;
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if ((presto->status = FT_Read(presto->handle, &presto_data, 1, &ftbytes)) != FT_OK)
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return ERROR_JTAG_INIT_FAILED;
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if (ftbytes!=1)
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return ERROR_JTAG_INIT_FAILED;
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}
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if ((presto->status = FT_SetTimeouts(presto->handle, 0, 0)) != FT_OK)
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return ERROR_JTAG_INIT_FAILED;
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presto->status = FT_Write(presto->handle, &presto_init_seq, sizeof(presto_init_seq), &ftbytes);
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if (presto->status != FT_OK)
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return ERROR_JTAG_INIT_FAILED;
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if (ftbytes != sizeof(presto_init_seq))
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return ERROR_JTAG_INIT_FAILED;
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return ERROR_OK;
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}
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#elif BUILD_PRESTO_LIBFTDI == 1
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int presto_open_libftdi(char *req_serial)
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{
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u8 presto_data;
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u32 ftbytes;
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DEBUG("searching for presto JTAG interface using libftdi");
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/* context, vendor id, product id */
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if (ftdi_usb_open_desc(&presto->ftdic, PRESTO_VID, PRESTO_PID, NULL, req_serial) < 0)
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{
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ERROR("unable to open presto: %s", presto->ftdic.error_str);
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return ERROR_JTAG_INIT_FAILED;
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}
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if (ftdi_usb_reset(&presto->ftdic) < 0)
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{
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ERROR("unable to reset presto device");
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return ERROR_JTAG_INIT_FAILED;
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}
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if (ftdi_set_latency_timer(&presto->ftdic, 1) < 0)
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{
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ERROR("unable to set latency timer");
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return ERROR_JTAG_INIT_FAILED;
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}
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if (ftdi_usb_purge_buffers(&presto->ftdic) < 0)
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{
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ERROR("unable to purge presto buffer");
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return ERROR_JTAG_INIT_FAILED;
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}
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presto_data = 0xD0;
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if ((presto->retval = presto_write(&presto_data, 1, &ftbytes)) != ERROR_OK)
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return ERROR_JTAG_INIT_FAILED;
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if ((presto->retval = presto_read(&presto_data, 1, &ftbytes)) != ERROR_OK)
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return ERROR_JTAG_INIT_FAILED;
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return ERROR_OK;
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}
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#endif /* BUILD_PRESTO_LIBFTDI == 1 */
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int presto_open(char *req_serial)
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{
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presto->buff_out_pos=0;
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presto->buff_in_pos=0;
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presto->buff_in_len=0;
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presto->buff_in_exp=0;
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presto->total_out=0;
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presto->total_in=0;
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presto->jtag_tms=0;
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presto->jtag_tck=0;
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presto->jtag_tdi_data=0;
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presto->jtag_tdi_count=0;
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#if BUILD_PRESTO_FTD2XX == 1
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return presto_open_ftd2xx(req_serial);
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#elif BUILD_PRESTO_LIBFTDI == 1
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return presto_open_libftdi(req_serial);
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#endif
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}
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int presto_close(void)
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{
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int result = ERROR_OK;
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#if BUID_PRESTO_FTD2XX == 1
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unsigned long ftbytes;
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if (presto->handle == (FT_HANDLE)INVALID_HANDLE_VALUE)
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return result;
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presto->status = FT_Write(presto->handle, &presto_init_seq, sizeof(presto_init_seq), &ftbytes);
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if (presto->status != FT_OK)
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result = PRST_ERR;
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if (ftbytes != sizeof(presto_init_seq))
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result = PRST_TIMEOUT;
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if ((presto->status = FT_SetLatencyTimer(presto->handle, 16)) != FT_OK)
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result = PRST_ERR;
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if ((presto->status = FT_Close(presto->handle)) != FT_OK)
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result = PRST_ERR;
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else
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presto->handle = (FT_HANDLE)INVALID_HANDLE_VALUE;
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#elif BUILD_PRESTO_LIBFTDI == 1
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if ((presto->retval = ftdi_write_data(&presto->ftdic, presto_init_seq, sizeof(presto_init_seq))) < 0)
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{
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result = ERROR_JTAG_DEVICE_ERROR;
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}
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if ((presto->retval = ftdi_set_latency_timer(&presto->ftdic, 16)) < 0)
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{
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result = ERROR_JTAG_DEVICE_ERROR;
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}
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ftdi_deinit(&presto->ftdic);
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#endif
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return result;
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}
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int presto_flush(void)
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{
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u32 ftbytes;
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if (presto->buff_out_pos == 0)
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return ERROR_OK;
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#if BUILD_PRESTO_FTD2XX == 1
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if (presto->status != FT_OK)
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#elif BUILD_PRESTO_LIBFTDI == 1
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if (presto->retval != ERROR_OK)
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#endif
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return ERROR_JTAG_DEVICE_ERROR;
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if (presto_write(presto->buff_out, presto->buff_out_pos, &ftbytes) != ERROR_OK)
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{
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presto->buff_out_pos = 0;
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return ERROR_JTAG_DEVICE_ERROR;
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}
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presto->total_out += ftbytes;
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if (presto->buff_out_pos != ftbytes)
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{
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presto->buff_out_pos = 0;
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return ERROR_JTAG_DEVICE_ERROR;
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}
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presto->buff_out_pos = 0;
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if (presto->buff_in_exp == 0)
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return ERROR_OK;
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presto->buff_in_pos = 0;
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presto->buff_in_len = 0;
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if (presto_read(presto->buff_in, presto->buff_in_exp, &ftbytes) != ERROR_OK)
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{
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presto->buff_in_exp = 0;
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return ERROR_JTAG_DEVICE_ERROR;
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}
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presto->total_in += ftbytes;
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if (ftbytes != presto->buff_in_exp)
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{
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presto->buff_in_exp = 0;
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return ERROR_JTAG_DEVICE_ERROR;
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}
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presto->buff_in_len = presto->buff_in_exp;
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presto->buff_in_exp = 0;
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return ERROR_OK;
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}
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int presto_sendbyte(int data)
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{
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if (data == EOF) return presto_flush();
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if (presto->buff_out_pos < BUFFER_SIZE)
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{
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presto->buff_out[presto->buff_out_pos++] = (u8)data;
|
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if (((data & 0xC0) == 0x40) || ((data & 0xD0)== 0xD0))
|
|
presto->buff_in_exp++;
|
|
}
|
|
else
|
|
return ERROR_JTAG_DEVICE_ERROR;
|
|
|
|
if (presto->buff_out_pos >= BUFFER_SIZE)
|
|
return presto_flush();
|
|
|
|
return ERROR_OK;
|
|
}
|
|
|
|
|
|
int presto_getbyte(void)
|
|
{
|
|
if (presto->buff_in_pos < presto->buff_in_len)
|
|
return presto->buff_in[presto->buff_in_pos++];
|
|
|
|
if (presto->buff_in_exp == 0)
|
|
return -1;
|
|
|
|
if (presto_flush() != ERROR_OK)
|
|
return -1;
|
|
|
|
if (presto->buff_in_pos<presto->buff_in_len)
|
|
return presto->buff_in[presto->buff_in_pos++];
|
|
|
|
return -1;
|
|
}
|
|
|
|
|
|
/* -------------------------------------------------------------------------- */
|
|
|
|
|
|
int presto_bitq_out(int tms, int tdi, int tdo_req)
|
|
{
|
|
unsigned char cmdparam;
|
|
|
|
if (presto->jtag_tck == 0)
|
|
{
|
|
presto_sendbyte(0xA4);
|
|
presto->jtag_tck = 1;
|
|
}
|
|
|
|
else if (!tdo_req && tms == presto->jtag_tms)
|
|
{
|
|
if (presto->jtag_tdi_count == 0)
|
|
presto->jtag_tdi_data = (tdi != 0);
|
|
else
|
|
presto->jtag_tdi_data |= (tdi != 0) << presto->jtag_tdi_count;
|
|
|
|
if (++presto->jtag_tdi_count == 4)
|
|
{
|
|
presto->jtag_tdi_data |= (presto->jtag_tdi_count - 1) << 4;
|
|
presto_sendbyte(presto->jtag_tdi_data);
|
|
presto->jtag_tdi_count = 0;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
if (presto->jtag_tdi_count)
|
|
{
|
|
presto->jtag_tdi_data |= (presto->jtag_tdi_count - 1) << 4;
|
|
presto_sendbyte(presto->jtag_tdi_data);
|
|
presto->jtag_tdi_count = 0;
|
|
}
|
|
|
|
if (tdi)
|
|
cmdparam = 0x0B;
|
|
else
|
|
cmdparam = 0x0A;
|
|
|
|
presto_sendbyte( 0xC0 | cmdparam);
|
|
|
|
if (tms != presto->jtag_tms)
|
|
{
|
|
if (tms)
|
|
presto_sendbyte(0xEC);
|
|
else
|
|
presto_sendbyte(0xE8);
|
|
presto->jtag_tms = tms;
|
|
}
|
|
|
|
if (tdo_req)
|
|
presto_sendbyte(0xD4 | cmdparam);
|
|
else
|
|
presto_sendbyte(0xC4|cmdparam);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
int presto_bitq_flush(void)
|
|
{
|
|
if (presto->jtag_tdi_count)
|
|
{
|
|
presto->jtag_tdi_data |= (presto->jtag_tdi_count - 1) << 4;
|
|
presto_sendbyte(presto->jtag_tdi_data);
|
|
presto->jtag_tdi_count = 0;
|
|
}
|
|
|
|
presto_sendbyte(0xCA);
|
|
presto->jtag_tck = 0;
|
|
|
|
presto_sendbyte(0xA0);
|
|
|
|
return presto_flush();
|
|
}
|
|
|
|
|
|
int presto_bitq_in_rdy(void)
|
|
{
|
|
if (presto->buff_in_pos>=presto->buff_in_len)
|
|
return 0;
|
|
return presto->buff_in_len-presto->buff_in_pos;
|
|
}
|
|
|
|
|
|
int presto_bitq_in(void)
|
|
{
|
|
if (presto->buff_in_pos>=presto->buff_in_len)
|
|
return -1;
|
|
if (presto->buff_in[presto->buff_in_pos++]&0x08) return 1;
|
|
return 0;
|
|
}
|
|
|
|
|
|
int presto_bitq_sleep(unsigned long us)
|
|
{
|
|
long waits;
|
|
|
|
if (us > 100000)
|
|
{
|
|
presto_bitq_flush();
|
|
jtag_sleep(us);
|
|
return 0;
|
|
}
|
|
|
|
waits = us / 170 + 2;
|
|
while (waits--)
|
|
presto_sendbyte(0x80);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
int presto_bitq_reset(int trst, int srst)
|
|
{
|
|
unsigned char cmd;
|
|
|
|
cmd = 0xE8;
|
|
if (presto->jtag_tms)
|
|
cmd |= 0x04;
|
|
|
|
if (trst || srst)
|
|
cmd |= 0x02;
|
|
|
|
presto_sendbyte(cmd);
|
|
return 0;
|
|
}
|
|
|
|
|
|
/* -------------------------------------------------------------------------- */
|
|
|
|
char *presto_speed_text[4] =
|
|
{
|
|
"3 MHz",
|
|
"1.5 MHz",
|
|
"750 kHz",
|
|
"93.75 kHz"
|
|
};
|
|
|
|
int presto_jtag_speed(int speed)
|
|
{
|
|
|
|
if ((speed < 0) || (speed > 3))
|
|
{
|
|
INFO("valid speed values: 0 (3 MHz), 1 (1.5 MHz), 2 (750 kHz) and 3 (93.75 kHz)");
|
|
return ERROR_INVALID_ARGUMENTS;
|
|
}
|
|
|
|
jtag_speed = speed;
|
|
INFO("setting speed to %d, max. TCK freq. is %s", speed, presto_speed_text[speed]);
|
|
return presto_sendbyte(0xA8 | speed);
|
|
}
|
|
|
|
|
|
char *presto_serial;
|
|
|
|
int presto_handle_serial_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
|
|
{
|
|
if (argc == 1)
|
|
{
|
|
if (presto_serial)
|
|
free(presto_serial);
|
|
presto_serial = strdup(args[0]);
|
|
}
|
|
else
|
|
{
|
|
ERROR("expected exactly one argument to presto_serial <serial-number>");
|
|
}
|
|
|
|
return ERROR_OK;
|
|
}
|
|
|
|
|
|
int presto_jtag_register_commands(struct command_context_s *cmd_ctx)
|
|
{
|
|
register_command(cmd_ctx, NULL, "presto_serial", presto_handle_serial_command,
|
|
COMMAND_CONFIG, NULL);
|
|
return ERROR_OK;
|
|
}
|
|
|
|
|
|
int presto_jtag_init(void)
|
|
{
|
|
if (presto_open(presto_serial) != ERROR_OK)
|
|
{
|
|
presto_close();
|
|
if (presto_serial != NULL)
|
|
ERROR("Cannot open PRESTO, serial number '%s'", presto_serial);
|
|
else
|
|
ERROR("Cannot open PRESTO");
|
|
return ERROR_JTAG_INIT_FAILED;
|
|
}
|
|
INFO("PRESTO open, serial number '%s'", presto->serial);
|
|
|
|
/* use JTAG speed setting from configuration file */
|
|
presto_jtag_speed(jtag_speed);
|
|
|
|
bitq_interface = &presto_bitq;
|
|
return ERROR_OK;
|
|
}
|
|
|
|
|
|
int presto_jtag_quit(void)
|
|
{
|
|
bitq_cleanup();
|
|
presto_close();
|
|
INFO("PRESTO closed");
|
|
|
|
if (presto_serial)
|
|
{
|
|
free(presto_serial);
|
|
presto_serial = NULL;
|
|
}
|
|
|
|
return ERROR_OK;
|
|
}
|