/*************************************************************************** * Copyright (C) 2005 by Dominic Rath * * Dominic.Rath@gmx.de * * * * Copyright (C) 2008 by Spencer Oliver * * spen@spen-soft.co.uk * * * * 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 "jtag.h" #include "bitbang.h" /* -ino: 060521-1036 */ #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) #include #include #define ioperm(startport,length,enable)\ i386_set_ioperm((startport), (length), (enable)) #endif /* __FreeBSD__ */ #if PARPORT_USE_PPDEV == 1 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) #include #include #define PPRSTATUS PPIGSTATUS #define PPWDATA PPISDATA #else #include #include #endif #include #else /* not PARPORT_USE_PPDEV */ #ifndef _WIN32 #include #endif #endif #if PARPORT_USE_GIVEIO == 1 && IS_CYGWIN == 1 #include #endif /* parallel port cable description */ typedef struct cable_s { char* name; u8 TDO_MASK; /* status port bit containing current TDO value */ u8 TRST_MASK; /* data port bit for TRST */ u8 TMS_MASK; /* data port bit for TMS */ u8 TCK_MASK; /* data port bit for TCK */ u8 TDI_MASK; /* data port bit for TDI */ u8 SRST_MASK; /* data port bit for SRST */ u8 OUTPUT_INVERT; /* data port bits that should be inverted */ u8 INPUT_INVERT; /* status port that should be inverted */ u8 PORT_INIT; /* initialize data port with this value */ u8 PORT_EXIT; /* de-initialize data port with this value */ u8 LED_MASK; /* data port bit for LED */ } cable_t; static cable_t cables[] = { /* name tdo trst tms tck tdi srst o_inv i_inv init exit led */ { "wiggler", 0x80, 0x10, 0x02, 0x04, 0x08, 0x01, 0x01, 0x80, 0x80, 0x80, 0x00 }, { "wiggler2", 0x80, 0x10, 0x02, 0x04, 0x08, 0x01, 0x01, 0x80, 0x80, 0x00, 0x20 }, { "wiggler_ntrst_inverted", 0x80, 0x10, 0x02, 0x04, 0x08, 0x01, 0x11, 0x80, 0x80, 0x80, 0x00 }, { "old_amt_wiggler", 0x80, 0x01, 0x02, 0x04, 0x08, 0x10, 0x11, 0x80, 0x80, 0x80, 0x00 }, { "arm-jtag", 0x80, 0x01, 0x02, 0x04, 0x08, 0x10, 0x01, 0x80, 0x80, 0x80, 0x00 }, { "chameleon", 0x80, 0x00, 0x04, 0x01, 0x02, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00 }, { "dlc5", 0x10, 0x00, 0x04, 0x02, 0x01, 0x00, 0x00, 0x00, 0x10, 0x10, 0x00 }, { "triton", 0x80, 0x08, 0x04, 0x01, 0x02, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00 }, { "lattice", 0x40, 0x10, 0x04, 0x02, 0x01, 0x08, 0x00, 0x00, 0x18, 0x18, 0x00 }, { "flashlink", 0x20, 0x10, 0x02, 0x01, 0x04, 0x20, 0x30, 0x20, 0x00, 0x00, 0x00 }, /* Altium Universal JTAG cable. Set the cable to Xilinx Mode and wire to target as follows: HARD TCK - Target TCK HARD TMS - Target TMS HARD TDI - Target TDI HARD TDO - Target TDO SOFT TCK - Target TRST SOFT TDI - Target SRST */ { "altium", 0x10, 0x20, 0x04, 0x02, 0x01, 0x80, 0x00, 0x00, 0x10, 0x00, 0x08 }, { NULL, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } }; /* configuration */ static char* parport_cable = NULL; static u16 parport_port; static int parport_exit = 0; /* interface variables */ static cable_t* cable; static u8 dataport_value = 0x0; #if PARPORT_USE_PPDEV == 1 static int device_handle; #else static unsigned long dataport; static unsigned long statusport; #endif /* low level command set */ static int parport_read(void); static void parport_write(int tck, int tms, int tdi); static void parport_reset(int trst, int srst); static void parport_led(int on); static int parport_speed(int speed); static int parport_register_commands(struct command_context_s *cmd_ctx); static int parport_init(void); static int parport_quit(void); /* interface commands */ static int parport_handle_parport_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc); static int parport_handle_parport_cable_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc); static int parport_handle_write_on_exit_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc); jtag_interface_t parport_interface = { .name = "parport", .execute_queue = bitbang_execute_queue, .speed = parport_speed, .register_commands = parport_register_commands, .init = parport_init, .quit = parport_quit, }; static bitbang_interface_t parport_bitbang = { .read = parport_read, .write = parport_write, .reset = parport_reset, .blink = parport_led }; static int parport_read(void) { int data = 0; #if PARPORT_USE_PPDEV == 1 ioctl(device_handle, PPRSTATUS, & data); #else data = inb(statusport); #endif if ((data ^ cable->INPUT_INVERT) & cable->TDO_MASK) return 1; else return 0; } static __inline__ void parport_write_data(void) { u8 output; output = dataport_value ^ cable->OUTPUT_INVERT; #if PARPORT_USE_PPDEV == 1 ioctl(device_handle, PPWDATA, &output); #else #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) outb(dataport, output); #else outb(output, dataport); #endif #endif } static void parport_write(int tck, int tms, int tdi) { int i = jtag_speed + 1; if (tck) dataport_value |= cable->TCK_MASK; else dataport_value &= ~cable->TCK_MASK; if (tms) dataport_value |= cable->TMS_MASK; else dataport_value &= ~cable->TMS_MASK; if (tdi) dataport_value |= cable->TDI_MASK; else dataport_value &= ~cable->TDI_MASK; while (i-- > 0) parport_write_data(); } /* (1) assert or (0) deassert reset lines */ static void parport_reset(int trst, int srst) { LOG_DEBUG("trst: %i, srst: %i", trst, srst); if (trst == 0) dataport_value |= cable->TRST_MASK; else if (trst == 1) dataport_value &= ~cable->TRST_MASK; if (srst == 0) dataport_value |= cable->SRST_MASK; else if (srst == 1) dataport_value &= ~cable->SRST_MASK; parport_write_data(); } /* turn LED on parport adapter on (1) or off (0) */ static void parport_led(int on) { if (on) dataport_value |= cable->LED_MASK; else dataport_value &= ~cable->LED_MASK; parport_write_data(); } static int parport_speed(int speed) { return ERROR_OK; } static int parport_register_commands(struct command_context_s *cmd_ctx) { register_command(cmd_ctx, NULL, "parport_port", parport_handle_parport_port_command, COMMAND_CONFIG, "either the address of the I/O port or the number of the ‘/dev/parport’ device"); register_command(cmd_ctx, NULL, "parport_cable", parport_handle_parport_cable_command, COMMAND_CONFIG, "the layout of the parallel port cable used to connect to the target"); register_command(cmd_ctx, NULL, "parport_write_on_exit", parport_handle_write_on_exit_command, COMMAND_CONFIG, "configure the parallel driver to write a known value to the parallel interface"); return ERROR_OK; } #if PARPORT_USE_GIVEIO == 1 static int parport_get_giveio_access(void) { HANDLE h; OSVERSIONINFO version; version.dwOSVersionInfoSize = sizeof version; if (!GetVersionEx( &version )) { errno = EINVAL; return -1; } if (version.dwPlatformId != VER_PLATFORM_WIN32_NT) return 0; h = CreateFile( "\\\\.\\giveio", GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL ); if (h == INVALID_HANDLE_VALUE) { errno = ENODEV; return -1; } CloseHandle( h ); return 0; } #endif static int parport_init(void) { cable_t *cur_cable; #if PARPORT_USE_PPDEV == 1 char buffer[256]; int i = 0; #endif cur_cable = cables; if ((parport_cable == NULL) || (parport_cable[0] == 0)) { parport_cable = "wiggler"; LOG_WARNING("No parport cable specified, using default 'wiggler'"); } while (cur_cable->name) { if (strcmp(cur_cable->name, parport_cable) == 0) { cable = cur_cable; break; } cur_cable++; } if (!cable) { LOG_ERROR("No matching cable found for %s", parport_cable); return ERROR_JTAG_INIT_FAILED; } dataport_value = cable->PORT_INIT; #if PARPORT_USE_PPDEV == 1 if (device_handle > 0) { LOG_ERROR("device is already opened"); return ERROR_JTAG_INIT_FAILED; } #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) LOG_DEBUG("opening /dev/ppi%d...", parport_port); snprintf(buffer, 256, "/dev/ppi%d", parport_port); device_handle = open(buffer, O_WRONLY); #else /* not __FreeBSD__, __FreeBSD_kernel__ */ LOG_DEBUG("opening /dev/parport%d...", parport_port); snprintf(buffer, 256, "/dev/parport%d", parport_port); device_handle = open(buffer, O_WRONLY); #endif /* __FreeBSD__, __FreeBSD_kernel__ */ if (device_handle < 0) { LOG_ERROR("cannot open device. check it exists and that user read and write rights are set"); return ERROR_JTAG_INIT_FAILED; } LOG_DEBUG("...open"); #if !defined(__FreeBSD__) && !defined(__FreeBSD_kernel__) i=ioctl(device_handle, PPCLAIM); if (i<0) { LOG_ERROR("cannot claim device"); return ERROR_JTAG_INIT_FAILED; } i = PARPORT_MODE_COMPAT; i= ioctl(device_handle, PPSETMODE, & i); if (i<0) { LOG_ERROR(" cannot set compatible mode to device"); return ERROR_JTAG_INIT_FAILED; } i = IEEE1284_MODE_COMPAT; i = ioctl(device_handle, PPNEGOT, & i); if (i<0) { LOG_ERROR("cannot set compatible 1284 mode to device"); return ERROR_JTAG_INIT_FAILED; } #endif /* not __FreeBSD__, __FreeBSD_kernel__ */ #else /* not PARPORT_USE_PPDEV */ if (parport_port == 0) { parport_port = 0x378; LOG_WARNING("No parport port specified, using default '0x378' (LPT1)"); } dataport = parport_port; statusport = parport_port + 1; LOG_DEBUG("requesting privileges for parallel port 0x%lx...", dataport); #if PARPORT_USE_GIVEIO == 1 if (parport_get_giveio_access() != 0) #else /* PARPORT_USE_GIVEIO */ if (ioperm(dataport, 3, 1) != 0) #endif /* PARPORT_USE_GIVEIO */ { LOG_ERROR("missing privileges for direct i/o"); return ERROR_JTAG_INIT_FAILED; } LOG_DEBUG("...privileges granted"); /* make sure parallel port is in right mode (clear tristate and interrupt */ #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) outb(parport_port + 2, 0x0); #else outb(0x0, parport_port + 2); #endif #endif /* PARPORT_USE_PPDEV */ parport_reset(0, 0); parport_write(0, 0, 0); parport_led(1); bitbang_interface = &parport_bitbang; return ERROR_OK; } static int parport_quit(void) { parport_led(0); if (parport_exit) { dataport_value = cable->PORT_EXIT; parport_write_data(); } if (parport_cable) { free(parport_cable); parport_cable = NULL; } return ERROR_OK; } static int parport_handle_parport_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) { if (argc == 0) return ERROR_OK; /* only if the port wasn't overwritten by cmdline */ if (parport_port == 0) parport_port = strtoul(args[0], NULL, 0); return ERROR_OK; } static int parport_handle_parport_cable_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) { if (argc == 0) return ERROR_OK; /* only if the cable name wasn't overwritten by cmdline */ if (parport_cable == 0) { parport_cable = malloc(strlen(args[0]) + sizeof(char)); strcpy(parport_cable, args[0]); } return ERROR_OK; } static int parport_handle_write_on_exit_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) { if (argc != 1) { command_print(cmd_ctx, "usage: parport_write_on_exit "); return ERROR_OK; } if (strcmp(args[0], "on") == 0) parport_exit = 1; else if (strcmp(args[0], "off") == 0) parport_exit = 0; return ERROR_OK; }