484 lines
13 KiB
C
484 lines
13 KiB
C
/***************************************************************************
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* Copyright (C) 2005 by Dominic Rath *
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* Dominic.Rath@gmx.de *
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* *
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* Copyright (C) 2008 by Spencer Oliver *
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* spen@spen-soft.co.uk *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "interface.h"
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#include "bitbang.h"
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/* -ino: 060521-1036 */
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#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
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#include <machine/sysarch.h>
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#include <machine/cpufunc.h>
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#define ioperm(startport,length,enable)\
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i386_set_ioperm((startport), (length), (enable))
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#endif /* __FreeBSD__ */
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#if PARPORT_USE_PPDEV == 1
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#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
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#include <dev/ppbus/ppi.h>
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#include <dev/ppbus/ppbconf.h>
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#define PPRSTATUS PPIGSTATUS
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#define PPWDATA PPISDATA
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#else
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#include <linux/parport.h>
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#include <linux/ppdev.h>
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#endif
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#include <sys/ioctl.h>
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#else /* not PARPORT_USE_PPDEV */
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#ifndef _WIN32
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#include <sys/io.h>
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#endif
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#endif
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#if PARPORT_USE_GIVEIO == 1 && IS_CYGWIN == 1
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#include <windows.h>
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#endif
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/* parallel port cable description
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*/
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typedef struct cable_s
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{
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char* name;
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uint8_t TDO_MASK; /* status port bit containing current TDO value */
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uint8_t TRST_MASK; /* data port bit for TRST */
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uint8_t TMS_MASK; /* data port bit for TMS */
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uint8_t TCK_MASK; /* data port bit for TCK */
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uint8_t TDI_MASK; /* data port bit for TDI */
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uint8_t SRST_MASK; /* data port bit for SRST */
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uint8_t OUTPUT_INVERT; /* data port bits that should be inverted */
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uint8_t INPUT_INVERT; /* status port that should be inverted */
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uint8_t PORT_INIT; /* initialize data port with this value */
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uint8_t PORT_EXIT; /* de-initialize data port with this value */
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uint8_t LED_MASK; /* data port bit for LED */
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} cable_t;
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static cable_t cables[] =
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{
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/* name tdo trst tms tck tdi srst o_inv i_inv init exit led */
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{ "wiggler", 0x80, 0x10, 0x02, 0x04, 0x08, 0x01, 0x01, 0x80, 0x80, 0x80, 0x00 },
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{ "wiggler2", 0x80, 0x10, 0x02, 0x04, 0x08, 0x01, 0x01, 0x80, 0x80, 0x00, 0x20 },
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{ "wiggler_ntrst_inverted",
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0x80, 0x10, 0x02, 0x04, 0x08, 0x01, 0x11, 0x80, 0x80, 0x80, 0x00 },
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{ "old_amt_wiggler", 0x80, 0x01, 0x02, 0x04, 0x08, 0x10, 0x11, 0x80, 0x80, 0x80, 0x00 },
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{ "arm-jtag", 0x80, 0x01, 0x02, 0x04, 0x08, 0x10, 0x01, 0x80, 0x80, 0x80, 0x00 },
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{ "chameleon", 0x80, 0x00, 0x04, 0x01, 0x02, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00 },
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{ "dlc5", 0x10, 0x00, 0x04, 0x02, 0x01, 0x00, 0x00, 0x00, 0x10, 0x10, 0x00 },
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{ "triton", 0x80, 0x08, 0x04, 0x01, 0x02, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00 },
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{ "lattice", 0x40, 0x10, 0x04, 0x02, 0x01, 0x08, 0x00, 0x00, 0x18, 0x18, 0x00 },
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{ "flashlink", 0x20, 0x10, 0x02, 0x01, 0x04, 0x20, 0x30, 0x20, 0x00, 0x00, 0x00 },
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/* Altium Universal JTAG cable. Set the cable to Xilinx Mode and wire to target as follows:
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HARD TCK - Target TCK
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HARD TMS - Target TMS
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HARD TDI - Target TDI
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HARD TDO - Target TDO
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SOFT TCK - Target TRST
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SOFT TDI - Target SRST
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*/
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{ "altium", 0x10, 0x20, 0x04, 0x02, 0x01, 0x80, 0x00, 0x00, 0x10, 0x00, 0x08 },
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{ NULL, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }
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};
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/* configuration */
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static char* parport_cable = NULL;
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static uint16_t parport_port;
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static int parport_exit = 0;
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/* interface variables
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*/
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static cable_t* cable;
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static uint8_t dataport_value = 0x0;
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#if PARPORT_USE_PPDEV == 1
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static int device_handle;
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#else
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static unsigned long dataport;
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static unsigned long statusport;
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#endif
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/* low level command set
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*/
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static int parport_read(void);
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static void parport_write(int tck, int tms, int tdi);
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static void parport_reset(int trst, int srst);
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static void parport_led(int on);
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static int parport_speed(int speed);
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static int parport_register_commands(struct command_context_s *cmd_ctx);
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static int parport_init(void);
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static int parport_quit(void);
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/* interface commands */
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static int parport_handle_parport_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
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static int parport_handle_parport_cable_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
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static int parport_handle_write_on_exit_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
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jtag_interface_t parport_interface =
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{
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.name = "parport",
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.execute_queue = bitbang_execute_queue,
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.speed = parport_speed,
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.register_commands = parport_register_commands,
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.init = parport_init,
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.quit = parport_quit,
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};
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static bitbang_interface_t parport_bitbang =
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{
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.read = parport_read,
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.write = parport_write,
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.reset = parport_reset,
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.blink = parport_led
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};
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static int parport_read(void)
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{
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int data = 0;
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#if PARPORT_USE_PPDEV == 1
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ioctl(device_handle, PPRSTATUS, & data);
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#else
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data = inb(statusport);
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#endif
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if ((data ^ cable->INPUT_INVERT) & cable->TDO_MASK)
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return 1;
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else
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return 0;
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}
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static __inline__ void parport_write_data(void)
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{
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uint8_t output;
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output = dataport_value ^ cable->OUTPUT_INVERT;
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#if PARPORT_USE_PPDEV == 1
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ioctl(device_handle, PPWDATA, &output);
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#else
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#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
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outb(dataport, output);
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#else
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outb(output, dataport);
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#endif
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#endif
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}
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static void parport_write(int tck, int tms, int tdi)
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{
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int i = jtag_get_speed() + 1;
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if (tck)
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dataport_value |= cable->TCK_MASK;
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else
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dataport_value &= ~cable->TCK_MASK;
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if (tms)
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dataport_value |= cable->TMS_MASK;
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else
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dataport_value &= ~cable->TMS_MASK;
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if (tdi)
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dataport_value |= cable->TDI_MASK;
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else
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dataport_value &= ~cable->TDI_MASK;
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while (i-- > 0)
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parport_write_data();
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}
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/* (1) assert or (0) deassert reset lines */
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static void parport_reset(int trst, int srst)
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{
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LOG_DEBUG("trst: %i, srst: %i", trst, srst);
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if (trst == 0)
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dataport_value |= cable->TRST_MASK;
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else if (trst == 1)
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dataport_value &= ~cable->TRST_MASK;
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if (srst == 0)
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dataport_value |= cable->SRST_MASK;
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else if (srst == 1)
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dataport_value &= ~cable->SRST_MASK;
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parport_write_data();
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}
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/* turn LED on parport adapter on (1) or off (0) */
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static void parport_led(int on)
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{
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if (on)
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dataport_value |= cable->LED_MASK;
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else
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dataport_value &= ~cable->LED_MASK;
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parport_write_data();
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}
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static int parport_speed(int speed)
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{
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return ERROR_OK;
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}
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static int parport_register_commands(struct command_context_s *cmd_ctx)
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{
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register_command(cmd_ctx, NULL, "parport_port", parport_handle_parport_port_command,
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COMMAND_CONFIG, "either the address of the I/O port or the number of the '/dev/parport' device");
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register_command(cmd_ctx, NULL, "parport_cable", parport_handle_parport_cable_command,
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COMMAND_CONFIG, "the layout of the parallel port cable used to connect to the target");
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register_command(cmd_ctx, NULL, "parport_write_on_exit", parport_handle_write_on_exit_command,
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COMMAND_CONFIG, "configure the parallel driver to write a known value to the parallel interface");
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return ERROR_OK;
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}
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#if PARPORT_USE_GIVEIO == 1
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static int parport_get_giveio_access(void)
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{
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HANDLE h;
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OSVERSIONINFO version;
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version.dwOSVersionInfoSize = sizeof version;
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if (!GetVersionEx(&version)) {
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errno = EINVAL;
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return -1;
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}
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if (version.dwPlatformId != VER_PLATFORM_WIN32_NT)
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return 0;
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h = CreateFile("\\\\.\\giveio", GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
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if (h == INVALID_HANDLE_VALUE) {
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errno = ENODEV;
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return -1;
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}
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CloseHandle(h);
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return 0;
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}
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#endif
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static int parport_init(void)
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{
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cable_t *cur_cable;
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#if PARPORT_USE_PPDEV == 1
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char buffer[256];
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int i = 0;
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#endif
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cur_cable = cables;
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if ((parport_cable == NULL) || (parport_cable[0] == 0))
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{
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parport_cable = "wiggler";
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LOG_WARNING("No parport cable specified, using default 'wiggler'");
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}
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while (cur_cable->name)
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{
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if (strcmp(cur_cable->name, parport_cable) == 0)
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{
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cable = cur_cable;
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break;
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}
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cur_cable++;
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}
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if (!cable)
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{
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LOG_ERROR("No matching cable found for %s", parport_cable);
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return ERROR_JTAG_INIT_FAILED;
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}
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dataport_value = cable->PORT_INIT;
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#if PARPORT_USE_PPDEV == 1
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if (device_handle > 0)
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{
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LOG_ERROR("device is already opened");
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return ERROR_JTAG_INIT_FAILED;
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}
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#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
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LOG_DEBUG("opening /dev/ppi%d...", parport_port);
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snprintf(buffer, 256, "/dev/ppi%d", parport_port);
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device_handle = open(buffer, O_WRONLY);
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#else /* not __FreeBSD__, __FreeBSD_kernel__ */
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LOG_DEBUG("opening /dev/parport%d...", parport_port);
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snprintf(buffer, 256, "/dev/parport%d", parport_port);
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device_handle = open(buffer, O_WRONLY);
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#endif /* __FreeBSD__, __FreeBSD_kernel__ */
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if (device_handle < 0)
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{
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int err = errno;
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LOG_ERROR("cannot open device. check it exists and that user read and write rights are set. errno=%d", err);
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return ERROR_JTAG_INIT_FAILED;
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}
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LOG_DEBUG("...open");
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#if !defined(__FreeBSD__) && !defined(__FreeBSD_kernel__)
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i = ioctl(device_handle, PPCLAIM);
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if (i < 0)
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{
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LOG_ERROR("cannot claim device");
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return ERROR_JTAG_INIT_FAILED;
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}
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i = PARPORT_MODE_COMPAT;
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i= ioctl(device_handle, PPSETMODE, & i);
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if (i < 0)
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{
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LOG_ERROR(" cannot set compatible mode to device");
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return ERROR_JTAG_INIT_FAILED;
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}
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i = IEEE1284_MODE_COMPAT;
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i = ioctl(device_handle, PPNEGOT, & i);
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if (i < 0)
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{
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LOG_ERROR("cannot set compatible 1284 mode to device");
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return ERROR_JTAG_INIT_FAILED;
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}
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#endif /* not __FreeBSD__, __FreeBSD_kernel__ */
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#else /* not PARPORT_USE_PPDEV */
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if (parport_port == 0)
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{
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parport_port = 0x378;
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LOG_WARNING("No parport port specified, using default '0x378' (LPT1)");
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}
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dataport = parport_port;
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statusport = parport_port + 1;
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LOG_DEBUG("requesting privileges for parallel port 0x%lx...", dataport);
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#if PARPORT_USE_GIVEIO == 1
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if (parport_get_giveio_access() != 0)
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#else /* PARPORT_USE_GIVEIO */
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if (ioperm(dataport, 3, 1) != 0)
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#endif /* PARPORT_USE_GIVEIO */
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{
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LOG_ERROR("missing privileges for direct i/o");
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return ERROR_JTAG_INIT_FAILED;
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}
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LOG_DEBUG("...privileges granted");
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/* make sure parallel port is in right mode (clear tristate and interrupt */
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#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
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outb(parport_port + 2, 0x0);
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#else
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outb(0x0, parport_port + 2);
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#endif
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#endif /* PARPORT_USE_PPDEV */
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parport_reset(0, 0);
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parport_write(0, 0, 0);
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parport_led(1);
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bitbang_interface = &parport_bitbang;
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return ERROR_OK;
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}
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static int parport_quit(void)
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{
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parport_led(0);
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if (parport_exit)
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{
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dataport_value = cable->PORT_EXIT;
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parport_write_data();
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}
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if (parport_cable)
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{
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free(parport_cable);
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parport_cable = NULL;
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}
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return ERROR_OK;
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}
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static int parport_handle_parport_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
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{
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if (argc == 1)
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{
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/* only if the port wasn't overwritten by cmdline */
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if (parport_port == 0)
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{
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int retval = parse_u16(args[0], &parport_port);
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if (ERROR_OK != retval)
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return retval;
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}
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else
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{
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LOG_ERROR("The parport port was already configured!");
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return ERROR_FAIL;
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}
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}
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command_print(cmd_ctx, "parport port = %u", parport_port);
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return ERROR_OK;
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}
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static int parport_handle_parport_cable_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
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{
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if (argc == 0)
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return ERROR_OK;
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/* only if the cable name wasn't overwritten by cmdline */
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if (parport_cable == 0)
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{
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parport_cable = malloc(strlen(args[0]) + sizeof(char));
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strcpy(parport_cable, args[0]);
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}
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return ERROR_OK;
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}
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static int parport_handle_write_on_exit_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
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{
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if (argc != 1)
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{
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command_print(cmd_ctx, "usage: parport_write_on_exit <on | off>");
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return ERROR_OK;
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}
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if (strcmp(args[0], "on") == 0)
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parport_exit = 1;
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else if (strcmp(args[0], "off") == 0)
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parport_exit = 0;
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return ERROR_OK;
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}
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