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   1 /***************************************************************************
   2  *   Copyright (C) 2007-2009 by Øyvind Harboe                              *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, or     *
   7  *   (at your option) any later version.                                   *
   8  *                                                                         *
   9  *   This program is distributed in the hope that it will be useful,       *
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  12  *   GNU General Public License for more details.                          *
  13  *                                                                         *
  14  *   You should have received a copy of the GNU General Public License     *
  15  *   along with this program; if not, write to the                         *
  16  *   Free Software Foundation, Inc.,                                       *
  17  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  18  ***************************************************************************/
  19
  20 #ifdef HAVE_CONFIG_H
  21 #include "config.h"
  22 #endif
  23
  24 #include <helper/types.h>
  25 #include <jtag/jtag.h>
  26 #include <helper/ioutil.h>
  27 #include <helper/configuration.h>
  28
  29 #include <server/server.h>
  30 #include <server/telnet_server.h>
  31 #include <server/gdb_server.h>
  32 #include <openocd.h>
  33
  34 #include <helper/time_support.h>
  35
  36 #include <sys/time.h>
  37 #include <stdio.h>
  38 #include <stdlib.h>
  39 #include <string.h>
  40 #include <unistd.h>
  41 #include <errno.h>
  42
  43 #include <cyg/io/flash.h>
  44 #include <pkgconf/fs_jffs2.h>   // Address of JFFS2
  45 #include <network.h>
  46
  47 #include <fcntl.h>
  48 #include <sys/stat.h>
  49 #include <cyg/fileio/fileio.h>
  50 #include <dirent.h>
  51 #include <cyg/athttpd/http.h>
  52 #include <cyg/athttpd/socket.h>
  53 #include <cyg/athttpd/handler.h>
  54 #include <cyg/athttpd/cgi.h>
  55 #include <cyg/athttpd/forms.h>
  56 #include <cyg/discover/discover.h>
  57 #include <cyg/io/io.h>
  58 #include <cyg/io/serialio.h>
  59 #include <netinet/tcp.h>
  60 #include <cyg/hal/hal_diag.h>
  61
  62 #include "rom.h"
  63
  64 #ifdef CYGPKG_HAL_NIOS2
  65 #include <cyg/hal/io.h>
  66 #define ZY1000_SER_DEV "/dev/uart_0"
  67 #else
  68 #define ZY1000_SER_DEV "/dev/ser0"
  69
  70 #endif
  71
  72
  73 #define MAX_IFS 64
  74 #if defined(CYGPKG_NET_FREEBSD_STACK)
  75 #include <tftp_support.h>
  76 /* posix compatibility broken*/
  77 struct tftpd_fileops fileops =
  78 {
  79         (int (*)(const char *, int))open,
  80         close,
  81         (int (*)(int, const void *, int))write,
  82         (int (*)(int, void *, int))read
  83 };
  84
  85 #endif
  86
  87
  88 void diag_write(char *buf, int len)
  89 {
  90         int j;
  91         for (j = 0; j < len; j++)
  92         {
  93                 diag_printf("%c", buf[j]);
  94         }
  95 }
  96
  97 static bool serialLog = true;
  98 static bool writeLog = true;
  99
 100 char hwaddr[512];
 101
 102 #ifdef CYGPKG_PROFILE_GPROF
 103 #include <cyg/profile/profile.h>
 104
 105 extern char _stext, _etext; // Defined by the linker
 106
 107 static char *start_of_code=&_stext;
 108 static char *end_of_code=&_etext;
 109
 110 void start_profile(void)
 111 {
 112         // This starts up the system-wide profiling, gathering
 113         // profile information on all of the code, with a 16 byte
 114         // "bucket" size, at a rate of 100us/profile hit.
 115         // Note: a bucket size of 16 will give pretty good function
 116         //       resolution.  Much smaller and the buffer becomes
 117         //       much too large for very little gain.
 118         // Note: a timer period of 100us is also a reasonable
 119         //       compromise.  Any smaller and the overhead of
 120         //       handling the timter (profile) interrupt could
 121         //       swamp the system.  A fast processor might get
 122         //       by with a smaller value, but a slow one could
 123         //       even be swamped by this value.  If the value is
 124         //       too large, the usefulness of the profile is reduced.
 125
 126         // no more interrupts than 1/10ms.
 127         //profile_on((void *)0, (void *)0x40000, 16, 10000); // SRAM
 128         //      profile_on(0, &_etext, 16, 10000); // SRAM & DRAM
 129         profile_on(start_of_code, end_of_code, 16, 10000); // Nios DRAM
 130 }
 131 #endif
 132
 133 static FILE *log;
 134
 135 static char reboot_stack[2048];
 136
 137 static void zylinjtag_reboot(cyg_addrword_t data)
 138 {
 139         serialLog = true;
 140         diag_printf("Rebooting in 500 ticks..\n");
 141         cyg_thread_delay(500);
 142         diag_printf("Unmounting /config..\n");
 143         umount("/config");
 144         diag_printf("Rebooting..\n");
 145 #ifdef CYGPKG_HAL_NIOS2
 146         /* This will reboot & reconfigure the FPGA from the bootloader
 147          * and on.
 148          */
 149         IOWR(REMOTE_UPDATE_BASE, 0x20, 0x1);
 150 #else
 151         HAL_PLATFORM_RESET();
 152 #endif
 153 }
 154 static cyg_thread zylinjtag_thread_object;
 155 static cyg_handle_t zylinjtag_thread_handle;
 156
 157 void reboot(void)
 158 {
 159         cyg_thread_create(1, zylinjtag_reboot, (cyg_addrword_t) 0, "reboot Thread",
 160                         (void *) reboot_stack, sizeof(reboot_stack),
 161                         &zylinjtag_thread_handle, &zylinjtag_thread_object);
 162         cyg_thread_resume(zylinjtag_thread_handle);
 163 }
 164
 165 static char zylinjtag_reboot_port_stack[2048];
 166 static cyg_thread zylinjtag_reboot_port_thread_object;
 167 static cyg_handle_t zylinjtag_reboot_port_thread_handle;
 168
 169 static void zylinjtag_reboot_port_task(cyg_addrword_t data)
 170 {
 171         int so_reuseaddr_option = 1;
 172
 173         int fd;
 174         if ((fd = socket(AF_INET, SOCK_STREAM, 0)) == -1)
 175         {
 176                 LOG_ERROR("error creating socket: %s", strerror(errno));
 177                 exit(-1);
 178         }
 179
 180         setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (void*) &so_reuseaddr_option,
 181                         sizeof(int));
 182
 183         struct sockaddr_in sin;
 184         unsigned int address_size;
 185         address_size = sizeof(sin);
 186         memset(&sin, 0, sizeof(sin));
 187         sin.sin_family = AF_INET;
 188         sin.sin_addr.s_addr = INADDR_ANY;
 189         sin.sin_port = htons(1234);
 190
 191         if (bind(fd, (struct sockaddr *) &sin, sizeof(sin)) == -1)
 192         {
 193                 LOG_ERROR("couldn't bind to socket: %s", strerror(errno));
 194                 exit(-1);
 195         }
 196
 197         if (listen(fd, 1) == -1)
 198         {
 199                 LOG_ERROR("couldn't listen on socket: %s", strerror(errno));
 200                 exit(-1);
 201         }
 202         //      socket_nonblock(fd);
 203
 204
 205         accept(fd, (struct sockaddr *) &sin, &address_size);
 206
 207         diag_printf("Got reboot signal on port 1234");
 208
 209         reboot();
 210
 211 }
 212
 213 void reboot_port(void)
 214 {
 215         cyg_thread_create(1, zylinjtag_reboot_port_task, (cyg_addrword_t) 0, "wait for reboot signal on port 1234",
 216                         (void *) zylinjtag_reboot_port_stack, sizeof(zylinjtag_reboot_port_stack),
 217                         &zylinjtag_reboot_port_thread_handle, &zylinjtag_reboot_port_thread_object);
 218         cyg_thread_resume(zylinjtag_reboot_port_thread_handle);
 219 }
 220
 221 int configuration_output_handler(struct command_context *context,
 222                 const char* line)
 223 {
 224         diag_printf("%s", line);
 225
 226         return ERROR_OK;
 227 }
 228
 229 int zy1000_configuration_output_handler_log(struct command_context *context,
 230                 const char* line)
 231 {
 232         LOG_USER_N("%s", line);
 233
 234         return ERROR_OK;
 235 }
 236
 237 #ifdef CYGPKG_PROFILE_GPROF
 238 //extern int64_t totaltime;
 239
 240 static int zylinjtag_Jim_Command_profile(Jim_Interp *interp, int argc,
 241                 Jim_Obj * const *argv)
 242 {
 243         if ((argc == 2) && (strcmp(Jim_GetString(argv[1], NULL), "stats")==0))
 244         {
 245 //              profile_off();
 246                 //LOG_USER("Stats %dms sleeping in select()", (int)totaltime);
 247         } else
 248         {
 249                 LOG_USER("Profiling started");
 250                 start_profile();
 251                 //totaltime = 0;
 252         }
 253         return ERROR_OK;
 254 }
 255
 256 #endif
 257
 258 externC void phi_init_all_network_interfaces(void);
 259
 260 struct command_context *cmd_ctx;
 261
 262 static bool webRunning = false;
 263
 264 void keep_webserver(void)
 265 {
 266         // Target initialisation is only attempted at startup, so we sleep forever and
 267         // let the http server bail us out(i.e. get config files set up).
 268         diag_printf("OpenOCD has invoked exit().\n"
 269                 "Use web server to correct any configuration settings and reboot.\n");
 270         if (!webRunning)
 271                 reboot();
 272
 273         // exit() will terminate the current thread and we we'll then sleep eternally or
 274         // we'll have a reboot scheduled.
 275 }
 276
 277 extern void printDccChar(char c);
 278
 279 static char logBuffer[128 * 1024];
 280 static const int logSize = sizeof(logBuffer);
 281 int writePtr = 0;
 282 int logCount = 0;
 283
 284 void _zylinjtag_diag_write_char(char c, void **param)
 285 {
 286         if (writeLog)
 287         {
 288                 logBuffer[writePtr] = c;
 289                 writePtr = (writePtr + 1) % logSize;
 290                 logCount++;
 291         }
 292         if (serialLog)
 293         {
 294                 if (c == '\n')
 295                 {
 296                         HAL_DIAG_WRITE_CHAR('\r');
 297                 }
 298                 HAL_DIAG_WRITE_CHAR(c);
 299         }
 300
 301 #ifdef CYGPKG_HAL_ZYLIN_PHI
 302         printDccChar(c);
 303 #endif
 304 }
 305
 306 void copyfile(char *name2, char *name1);
 307
 308 void copydir(char *name, char *destdir);
 309
 310 #if 0
 311 MTAB_ENTRY(romfs_mte1,
 312                 "/rom",
 313                 "romfs",
 314                 "",
 315                 (CYG_ADDRWORD) &filedata[0]);
 316 #endif
 317
 318 void openocd_sleep_prelude(void)
 319 {
 320         cyg_mutex_unlock(&httpstate.jim_lock);
 321 }
 322
 323 void openocd_sleep_postlude(void)
 324 {
 325         cyg_mutex_lock(&httpstate.jim_lock);
 326 }
 327
 328 void format(void)
 329 {
 330 #ifdef CYGDAT_IO_FLASH_BLOCK_DEVICE_NAME_1
 331         diag_printf("Formatting JFFS2...\n");
 332
 333         cyg_io_handle_t handle;
 334
 335         Cyg_ErrNo err;
 336         err = cyg_io_lookup(CYGDAT_IO_FLASH_BLOCK_DEVICE_NAME_1, &handle);
 337         if (err != ENOERR)
 338         {
 339                 diag_printf("Flash Error cyg_io_lookup: %d\n", err);
 340                 reboot();
 341         }
 342
 343         cyg_uint32 len;
 344         cyg_io_flash_getconfig_devsize_t ds;
 345         len = sizeof(ds);
 346         err = cyg_io_get_config(handle, CYG_IO_GET_CONFIG_FLASH_DEVSIZE, &ds, &len);
 347         if (err != ENOERR)
 348         {
 349                 diag_printf("Flash error cyg_io_get_config %d\n", err);
 350                 reboot();
 351         }
 352
 353         cyg_io_flash_getconfig_erase_t e;
 354         len = sizeof(e);
 355
 356         e.offset = 0;
 357         e.len = ds.dev_size;
 358
 359         diag_printf("Formatting 0x%08x bytes\n", (int)ds.dev_size);
 360         err = cyg_io_get_config(handle, CYG_IO_GET_CONFIG_FLASH_ERASE, &e, &len);
 361         if (err != ENOERR)
 362         {
 363                 diag_printf("Flash erase error %d offset 0x%08x\n", err, e.err_address);
 364                 reboot();
 365         }
 366
 367         diag_printf("Flash formatted successfully\n");
 368 #endif
 369
 370         reboot();
 371 }
 372
 373 static int zylinjtag_Jim_Command_format_jffs2(Jim_Interp *interp, int argc,
 374                 Jim_Obj * const *argv)
 375 {
 376         if (argc != 1)
 377         {
 378                 return JIM_ERR;
 379         }
 380
 381         format();
 382         for (;;)
 383                 ;
 384 }
 385
 386 static int zylinjtag_Jim_Command_threads(Jim_Interp *interp, int argc,
 387                 Jim_Obj * const *argv)
 388 {
 389         cyg_handle_t thread = 0;
 390         cyg_uint16 id = 0;
 391         Jim_Obj *threads = Jim_NewListObj(interp, NULL, 0);
 392
 393         /* Loop over the threads, and generate a table row for
 394          * each.
 395          */
 396         while (cyg_thread_get_next(&thread, &id))
 397         {
 398                 Jim_Obj *threadObj = Jim_NewListObj(interp, NULL, 0);
 399
 400                 cyg_thread_info info;
 401                 char *state_string;
 402
 403                 cyg_thread_get_info(thread, id, &info);
 404
 405                 if (info.name == NULL)
 406                         info.name = "<no name>";
 407
 408                 Jim_ListAppendElement(interp, threadObj, Jim_NewStringObj(interp,
 409                                 info.name, strlen(info.name)));
 410
 411                 /* Translate the state into a string.
 412                  */
 413                 if (info.state == 0)
 414                         state_string = "RUN";
 415                 else if (info.state & 0x04)
 416                         state_string = "SUSP";
 417                 else
 418                         switch (info.state & 0x1b)
 419                         {
 420                         case 0x01:
 421                                 state_string = "SLEEP";
 422                                 break;
 423                         case 0x02:
 424                                 state_string = "CNTSLEEP";
 425                                 break;
 426                         case 0x08:
 427                                 state_string = "CREATE";
 428                                 break;
 429                         case 0x10:
 430                                 state_string = "EXIT";
 431                                 break;
 432                         default:
 433                                 state_string = "????";
 434                                 break;
 435                         }
 436
 437                 Jim_ListAppendElement(interp, threadObj, Jim_NewStringObj(interp,
 438                                 state_string, strlen(state_string)));
 439
 440                 Jim_ListAppendElement(interp, threadObj, Jim_NewIntObj(interp, id));
 441                 Jim_ListAppendElement(interp, threadObj, Jim_NewIntObj(interp,
 442                                 info.set_pri));
 443                 Jim_ListAppendElement(interp, threadObj, Jim_NewIntObj(interp,
 444                                 info.cur_pri));
 445
 446                 Jim_ListAppendElement(interp, threads, threadObj);
 447         }
 448         Jim_SetResult(interp, threads);
 449
 450         return JIM_OK;
 451 }
 452
 453 static int zylinjtag_Jim_Command_log(Jim_Interp *interp, int argc,
 454                 Jim_Obj * const *argv)
 455 {
 456         Jim_Obj *tclOutput = Jim_NewStringObj(interp, "", 0);
 457
 458         if (logCount >= logSize)
 459         {
 460                 Jim_AppendString(httpstate.jim_interp, tclOutput, logBuffer + logCount
 461                                 % logSize, logSize - logCount % logSize);
 462         }
 463         Jim_AppendString(httpstate.jim_interp, tclOutput, logBuffer, writePtr);
 464
 465         Jim_SetResult(interp, tclOutput);
 466         return JIM_OK;
 467 }
 468
 469 static int zylinjtag_Jim_Command_reboot(Jim_Interp *interp, int argc,
 470                 Jim_Obj * const *argv)
 471 {
 472         reboot();
 473         return JIM_OK;
 474 }
 475
 476 static void zylinjtag_startNetwork(void)
 477 {
 478         // Bring TCP/IP up immediately before we're ready to accept commands.
 479         //
 480         // That is as soon as a PING responds, we're accepting telnet sessions.
 481 #if defined(CYGPKG_NET_FREEBSD_STACK)
 482         phi_init_all_network_interfaces();
 483 #else
 484         lwip_init();
 485 #endif
 486         if (!eth0_up)
 487         {
 488                 diag_printf("Network not up and running\n");
 489                 exit(-1);
 490         }
 491
 492         /* very first thing we want is a reboot capability */
 493         reboot_port();
 494
 495 #if defined(CYGPKG_NET_FREEBSD_STACK)
 496         /*start TFTP*/
 497         tftpd_start(69, &fileops);
 498 #endif
 499
 500         cyg_httpd_init_tcl_interpreter();
 501
 502         Jim_CreateCommand(httpstate.jim_interp, "log", zylinjtag_Jim_Command_log,
 503                         NULL, NULL);
 504         Jim_CreateCommand(httpstate.jim_interp, "zy1000_reboot",
 505                         zylinjtag_Jim_Command_reboot, NULL, NULL);
 506         Jim_CreateCommand(httpstate.jim_interp, "threads",
 507                         zylinjtag_Jim_Command_threads, NULL, NULL);
 508         Jim_CreateCommand(httpstate.jim_interp, "format_jffs2",
 509                         zylinjtag_Jim_Command_format_jffs2, NULL, NULL);
 510
 511         cyg_httpd_start();
 512
 513         webRunning = true;
 514
 515         diag_printf("Web server running\n");
 516
 517         int s;
 518         struct ifreq ifr;
 519         s = socket(AF_INET, SOCK_DGRAM, 0);
 520         if (s >= 0)
 521         {
 522                 strcpy(ifr.ifr_name, "eth0");
 523                 int res;
 524                 res = ioctl(s, SIOCGIFHWADDR, &ifr);
 525                 close(s);
 526
 527                 if (res < 0)
 528                 {
 529                         diag_printf("Can't obtain MAC address\n");
 530                         reboot();
 531                 }
 532         }
 533
 534         sprintf(hwaddr, "%02x:%02x:%02x:%02x:%02x:%02x",
 535                         (int) ((unsigned char *) &ifr.ifr_hwaddr.sa_data)[0],
 536                         (int) ((unsigned char *) &ifr.ifr_hwaddr.sa_data)[1],
 537                         (int) ((unsigned char *) &ifr.ifr_hwaddr.sa_data)[2],
 538                         (int) ((unsigned char *) &ifr.ifr_hwaddr.sa_data)[3],
 539                         (int) ((unsigned char *) &ifr.ifr_hwaddr.sa_data)[4],
 540                         (int) ((unsigned char *) &ifr.ifr_hwaddr.sa_data)[5]);
 541
 542         discover_message
 543                         = alloc_printf("ZY1000 Zylin JTAG debugger MAC %s", hwaddr);
 544
 545         discover_launch();
 546 }
 547
 548 static void print_exception_handler(cyg_addrword_t data, cyg_code_t exception,
 549                 cyg_addrword_t info)
 550 {
 551         writeLog = false;
 552         serialLog = true;
 553         char *infoStr = "unknown";
 554         switch (exception)
 555         {
 556 #ifdef CYGNUM_HAL_VECTOR_UNDEF_INSTRUCTION
 557         case CYGNUM_HAL_VECTOR_UNDEF_INSTRUCTION:
 558         infoStr = "undefined instruction";
 559         break;
 560         case CYGNUM_HAL_VECTOR_SOFTWARE_INTERRUPT:
 561         infoStr = "software interrupt";
 562         break;
 563         case CYGNUM_HAL_VECTOR_ABORT_PREFETCH:
 564         infoStr = "abort prefetch";
 565         break;
 566         case CYGNUM_HAL_VECTOR_ABORT_DATA:
 567         infoStr = "abort data";
 568         break;
 569 #endif
 570         default:
 571                 break;
 572         }
 573
 574         diag_printf("Exception: %08x(%s) %08x\n", exception, infoStr, info);
 575
 576         diag_printf("Dumping log\n---\n");
 577         if (logCount >= logSize)
 578         {
 579                 diag_write(logBuffer + logCount % logSize, logSize - logCount % logSize);
 580         }
 581         diag_write(logBuffer, writePtr);
 582
 583         diag_printf("---\nLogdump complete.\n");
 584         diag_printf("Exception: %08x(%s) %08x\n", exception, infoStr, info);
 585         diag_printf("\n---\nRebooting\n");
 586         HAL_PLATFORM_RESET();
 587
 588 }
 589
 590 #ifdef CYGNUM_HAL_VECTOR_UNDEF_INSTRUCTION
 591 static void setHandler(cyg_code_t exception)
 592 {
 593         cyg_exception_handler_t *old_handler;
 594         cyg_addrword_t old_data;
 595
 596         cyg_exception_set_handler(exception, print_exception_handler, 0,
 597                         &old_handler, &old_data);
 598 }
 599 #endif
 600
 601 static cyg_thread zylinjtag_uart_thread_object;
 602 static cyg_handle_t zylinjtag_uart_thread_handle;
 603 static char uart_stack[4096];
 604
 605 static char forwardBuffer[1024]; // NB! must be smaller than a TCP/IP packet!!!!!
 606 static char backwardBuffer[1024];
 607
 608 void setNoDelay(int session, int flag)
 609 {
 610 #if 1
 611         // This decreases latency dramatically for e.g. GDB load which
 612         // does not have a sliding window protocol
 613         //
 614         // Can cause *lots* of TCP/IP packets to be sent and it would have
 615         // to be enabled/disabled on the fly to avoid the CPU being
 616         // overloaded...
 617         setsockopt(session, /* socket affected */
 618         IPPROTO_TCP, /* set option at TCP level */
 619         TCP_NODELAY, /* name of option */
 620         (char *) &flag, /* the cast is historical
 621          cruft */
 622         sizeof(int)); /* length of option value */
 623 #endif
 624 }
 625
 626 #define TEST_TCPIP() 0
 627
 628 #if TEST_TCPIP
 629 struct
 630 {
 631         int req;
 632         int actual;
 633         int req2;
 634         int actual2;
 635 } tcpipSent[512 * 1024];
 636 int cur;
 637 #endif
 638
 639 static void zylinjtag_uart(cyg_addrword_t data)
 640 {
 641         int so_reuseaddr_option = 1;
 642
 643         int fd;
 644         if ((fd = socket(AF_INET, SOCK_STREAM, 0)) == -1)
 645         {
 646                 LOG_ERROR("error creating socket: %s", strerror(errno));
 647                 exit(-1);
 648         }
 649
 650         setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (void*) &so_reuseaddr_option,
 651                         sizeof(int));
 652
 653         struct sockaddr_in sin;
 654         unsigned int address_size;
 655         address_size = sizeof(sin);
 656         memset(&sin, 0, sizeof(sin));
 657         sin.sin_family = AF_INET;
 658         sin.sin_addr.s_addr = INADDR_ANY;
 659         sin.sin_port = htons(5555);
 660
 661         if (bind(fd, (struct sockaddr *) &sin, sizeof(sin)) == -1)
 662         {
 663                 LOG_ERROR("couldn't bind to socket: %s", strerror(errno));
 664                 exit(-1);
 665         }
 666
 667         if (listen(fd, 1) == -1)
 668         {
 669                 LOG_ERROR("couldn't listen on socket: %s", strerror(errno));
 670                 exit(-1);
 671         }
 672         //      socket_nonblock(fd);
 673
 674
 675         for (;;)
 676         {
 677                 int session = accept(fd, (struct sockaddr *) &sin, &address_size);
 678                 if (session < 0)
 679                 {
 680                         continue;
 681                 }
 682
 683                 setNoDelay(session, 1);
 684                 int oldopts = fcntl(session, F_GETFL, 0);
 685                 fcntl(session, F_SETFL, oldopts | O_NONBLOCK); //
 686
 687                 int serHandle = open(ZY1000_SER_DEV, O_RDWR | O_NONBLOCK);
 688                 if (serHandle < 0)
 689                 {
 690                         close(session);
 691                         continue;
 692                 }
 693
 694 #ifdef CYGPKG_PROFILE_GPROF
 695                 start_profile();
 696 #endif
 697                 size_t actual = 0;
 698                 size_t actual2 = 0;
 699                 size_t pos, pos2;
 700                 pos = 0;
 701                 pos2 = 0;
 702 #if TEST_TCPIP
 703                 cur = 0;
 704 #endif
 705                 for (;;)
 706                 {
 707                         fd_set write_fds;
 708                         fd_set read_fds;
 709                         FD_ZERO(&write_fds);
 710                         FD_ZERO(&read_fds);
 711                         int fd_max = -1;
 712                         FD_SET(session, &read_fds);
 713                         fd_max = session;
 714                         FD_SET(serHandle, &read_fds);
 715                         if (serHandle > fd_max)
 716                         {
 717                                 fd_max = serHandle;
 718                         }
 719                         /* Wait... */
 720
 721                         cyg_thread_delay(5); // 50ms fixed delay to wait for data to be sent/received
 722                         if ((actual == 0) && (actual2 == 0))
 723                         {
 724                                 int retval = select(fd_max + 1, &read_fds, NULL, NULL, NULL);
 725                                 if (retval <= 0)
 726                                 {
 727                                         break;
 728                                 }
 729                         }
 730
 731                         if (actual2 <= 0)
 732                         {
 733                                 memset(backwardBuffer, 's', sizeof(backwardBuffer));
 734                                 int t;
 735                                 t = read(serHandle, backwardBuffer,
 736                                                 sizeof(backwardBuffer));
 737                                 actual2 = t;
 738                                 if (t < 0)
 739                                 {
 740                                         if (errno != EAGAIN)
 741                                         {
 742                                                 goto closeSession;
 743                                         }
 744                                         actual2 = 0;
 745                                 }
 746                                 pos2 = 0;
 747                         }
 748
 749                         size_t y = 0;
 750                         if (actual2 > 0)
 751                         {
 752                                 int written = write(session, backwardBuffer + pos2, actual2);
 753                                 if (written <= 0)
 754                                         goto closeSession;
 755                                 actual2 -= written;
 756                                 pos2 += written;
 757                                 y = written;
 758                         }
 759
 760                         if (FD_ISSET(session, &read_fds)
 761                                         && (sizeof(forwardBuffer) > actual))
 762                         {
 763                                 // NB! Here it is important that we empty the TCP/IP read buffer
 764                                 // to make transmission tick right
 765                                 memmove(forwardBuffer, forwardBuffer + pos, actual);
 766                                 pos = 0;
 767                                 int t;
 768                                 // this will block if there is no data at all
 769                                 t = read_socket(session, forwardBuffer + actual,
 770                                                 sizeof(forwardBuffer) - actual);
 771                                 if (t <= 0)
 772                                 {
 773                                         goto closeSession;
 774                                 }
 775                                 actual += t;
 776                         }
 777
 778                         int y2 = 0;
 779                         if (actual > 0)
 780                         {
 781                                 /* Do not put things into the serial buffer if it has something to send
 782                                  * as that can cause a single byte to be sent at the time.
 783                                  *
 784                                  *
 785                                  */
 786                                 int written = write(serHandle, forwardBuffer + pos, actual);
 787                                 if (written < 0)
 788                                 {
 789                                         if (errno != EAGAIN)
 790                                         {
 791                                                 goto closeSession;
 792                                         }
 793                                         // The serial buffer is full
 794                                         written = 0;
 795                                 }
 796                                 else
 797                                 {
 798                                         actual -= written;
 799                                         pos += written;
 800                                 }
 801                                 y2 = written;
 802                         }
 803 #if TEST_TCPIP
 804                         if (cur < 1024)
 805                         {
 806                                 tcpipSent[cur].req = x;
 807                                 tcpipSent[cur].actual = y;
 808                                 tcpipSent[cur].req2 = x2;
 809                                 tcpipSent[cur].actual2 = y2;
 810                                 cur++;
 811                         }
 812 #endif
 813                 }
 814                 closeSession: close(session);
 815                 close(serHandle);
 816
 817 #if TEST_TCPIP
 818                 int i;
 819                 for (i = 0; i < 1024; i++)
 820                 {
 821                         diag_printf("%d %d %d %d\n", tcpipSent[i].req, tcpipSent[i].actual,
 822                                         tcpipSent[i].req2, tcpipSent[i].actual2);
 823
 824                 }
 825 #endif
 826         }
 827         close(fd);
 828
 829 }
 830
 831 void startUart(void)
 832 {
 833         cyg_thread_create(1, zylinjtag_uart, (cyg_addrword_t) 0, "uart thread",
 834                         (void *) uart_stack, sizeof(uart_stack),
 835                         &zylinjtag_uart_thread_handle, &zylinjtag_uart_thread_object);
 836         cyg_thread_set_priority(zylinjtag_uart_thread_handle, 1); // low priority as it sits in a busy loop
 837         cyg_thread_resume(zylinjtag_uart_thread_handle);
 838 }
 839
 840 static int zylinjtag_Jim_Command_uart(Jim_Interp *interp, int argc,
 841                 Jim_Obj * const *argv)
 842 {
 843         static int current_baud = 38400;
 844         if (argc == 1)
 845         {
 846                 Jim_SetResult(interp, Jim_NewIntObj(interp, current_baud));
 847                 return JIM_OK;
 848         }
 849         else if (argc != 2)
 850         {
 851                 return JIM_ERR;
 852         }
 853
 854         long new_baudrate;
 855         if (Jim_GetLong(interp, argv[1], &new_baudrate) != JIM_OK)
 856                 return JIM_ERR;
 857
 858         current_baud = new_baudrate;
 859
 860         int baud;
 861         switch (current_baud)
 862         {
 863         case 9600:
 864                 baud = CYGNUM_SERIAL_BAUD_9600;
 865                 break;
 866         case 19200:
 867                 baud = CYGNUM_SERIAL_BAUD_19200;
 868                 break;
 869         case 38400:
 870                 baud = CYGNUM_SERIAL_BAUD_38400;
 871                 break;
 872         case 57600:
 873                 baud = CYGNUM_SERIAL_BAUD_57600;
 874                 break;
 875         case 115200:
 876                 baud = CYGNUM_SERIAL_BAUD_115200;
 877                 break;
 878         case 230400:
 879                 baud = CYGNUM_SERIAL_BAUD_230400;
 880                 break;
 881         default:
 882                 Jim_SetResult(interp, Jim_NewStringObj(interp, "unsupported baudrate", -1));
 883                 return JIM_ERR;
 884         }
 885
 886         cyg_serial_info_t buf;
 887         cyg_uint32 len = 1;
 888         //get existing serial configuration
 889         len = sizeof(cyg_serial_info_t);
 890         int err;
 891         cyg_io_handle_t serial_handle;
 892
 893         err = cyg_io_lookup(ZY1000_SER_DEV, &serial_handle);
 894         if (err != ENOERR)
 895         {
 896                 Jim_SetResult(interp, Jim_NewStringObj(interp, "Could not open serial port", -1));
 897                 return JIM_ERR;
 898         }
 899
 900         err = cyg_io_get_config(serial_handle,
 901                         CYG_IO_GET_CONFIG_SERIAL_OUTPUT_DRAIN, &buf, &len);
 902         err = cyg_io_get_config(serial_handle, CYG_IO_GET_CONFIG_SERIAL_INFO, &buf,
 903                         &len);
 904         if (err != ENOERR)
 905         {
 906                 Jim_SetResult(interp, Jim_NewStringObj(interp, "Failed to get serial port settings", -1));
 907                 return JIM_ERR;
 908         }
 909         buf.baud = baud;
 910
 911         err = cyg_io_set_config(serial_handle, CYG_IO_SET_CONFIG_SERIAL_INFO, &buf,
 912                         &len);
 913         if (err != ENOERR)
 914         {
 915                 Jim_SetResult(interp, Jim_NewStringObj(interp, "Failed to set serial port settings", -1));
 916                 return JIM_ERR;
 917         }
 918
 919         return JIM_OK;
 920 }
 921
 922 bool logAllToSerial = false;
 923
 924
 925 int boolParam(char *var);
 926
 927
 928 static const char *zylin_config_dir="/config/settings";
 929
 930 static int add_default_dirs(void)
 931 {
 932         add_script_search_dir(zylin_config_dir);
 933         add_script_search_dir("/rom/lib/openocd");
 934         add_script_search_dir("/rom");
 935         return ERROR_OK;
 936 }
 937
 938 int main(int argc, char *argv[])
 939 {
 940         /* ramblockdevice will be the same address every time. The deflate app uses a buffer 16mBytes out, so we
 941          * need to allocate towards the end of the heap.  */
 942
 943 #ifdef CYGNUM_HAL_VECTOR_UNDEF_INSTRUCTION
 944         setHandler(CYGNUM_HAL_VECTOR_UNDEF_INSTRUCTION);
 945         setHandler(CYGNUM_HAL_VECTOR_ABORT_PREFETCH);
 946         setHandler(CYGNUM_HAL_VECTOR_ABORT_DATA);
 947 #endif
 948
 949         int err;
 950
 951         atexit(keep_webserver);
 952
 953         diag_init_putc(_zylinjtag_diag_write_char);
 954         // We want this in the log.
 955 #ifdef CYGPKG_HAL_NIOS2
 956         diag_printf("Zylin ZY1000 PCB revc.\n");
 957 #else
 958         diag_printf("Zylin ZY1000 PCB revb.\n");
 959 #endif
 960
 961         err = mount("", "/ram", "ramfs");
 962         if (err < 0)
 963         {
 964                 diag_printf("unable to mount ramfs\n");
 965         }
 966         chdir("/ram");
 967
 968         char address[16];
 969         sprintf(address, "%p", &filedata[0]);
 970         err = mount(address, "/rom", "romfs");
 971         if (err < 0)
 972         {
 973                 diag_printf("unable to mount /rom\n");
 974         }
 975
 976         err = mount("", "/log", "logfs");
 977         if (err < 0)
 978         {
 979                 diag_printf("unable to mount logfs\n");
 980         }
 981
 982         err = mount("", "/tftp", "tftpfs");
 983         if (err < 0)
 984         {
 985                 diag_printf("unable to mount logfs\n");
 986         }
 987
 988         log = fopen("/log/log", "w");
 989         if (log == NULL)
 990         {
 991                 diag_printf("Could not open log file /ram/log\n");
 992                 exit(-1);
 993         }
 994
 995
 996         copydir("/rom", "/ram/cgi");
 997
 998 #ifdef CYGPKG_HAL_NIOS2
 999         cyg_flashaddr_t err_address;
1000 #define UNCACHED_EXT_FLASH_BASE (0x80000000 + EXT_FLASH_BASE)
1001         /* The revc flash is locked upon reset, unlock it */
1002 #ifdef CYGHWR_IO_FLASH_BLOCK_LOCKING
1003         if ((err = flash_unlock((void *) UNCACHED_EXT_FLASH_BASE, EXT_FLASH_SPAN,
1004                         (void **) &err_address)) != 0)
1005         {
1006                 diag_printf("Error: could not unlock flash\n");
1007         }
1008 #endif
1009 #endif
1010
1011
1012         err = mount("/dev/flash1", "/config", "jffs2");
1013         if (err < 0)
1014         {
1015                 diag_printf("unable to mount jffs2, falling back to ram disk..\n");
1016                 err = mount("", "/config", "ramfs");
1017                 if (err < 0)
1018                 {
1019                         diag_printf("unable to mount /config as ramdisk.\n");
1020                         reboot();
1021                 }
1022         }
1023         else
1024         {
1025                 /* are we using a ram disk instead of a flash disk? This is used
1026                  * for ZY1000 live demo...
1027                  *
1028                  * copy over flash disk to ram block device
1029                  */
1030                 if (boolParam("ramdisk"))
1031                 {
1032                         diag_printf("Unmounting /config from flash and using ram instead\n");
1033                         err = umount("/config");
1034                         if (err < 0)
1035                         {
1036                                 diag_printf("unable to unmount jffs\n");
1037                                 reboot();
1038                         }
1039
1040                         err = mount("/dev/flash1", "/config2", "jffs2");
1041                         if (err < 0)
1042                         {
1043                                 diag_printf("unable to mount jffs\n");
1044                                 reboot();
1045                         }
1046
1047                         err = mount("", "/config", "ramfs");
1048                         if (err < 0)
1049                         {
1050                                 diag_printf("unable to mount ram block device\n");
1051                                 reboot();
1052                         }
1053
1054                         //              copydir("/config2", "/config");
1055                         copyfile("/config2/ip", "/config/ip");
1056                         copydir("/config2/settings", "/config/settings");
1057
1058                         umount("/config2");
1059                 }
1060         }
1061
1062         mkdir(zylin_config_dir, 0777);
1063         char *dirname = alloc_printf("%s/target", zylin_config_dir);
1064         mkdir(dirname, 0777);
1065         free(dirname);
1066         dirname = alloc_printf("%s/board", zylin_config_dir);
1067         mkdir(dirname, 0777);
1068         free(dirname);
1069         dirname = alloc_printf("%s/event", zylin_config_dir);
1070         mkdir(dirname, 0777);
1071         free(dirname);
1072
1073         logAllToSerial = boolParam("logserial");
1074
1075         // We need the network & web server in case there is something wrong with
1076         // the config files that invoke exit()
1077         zylinjtag_startNetwork();
1078
1079         /* we're going to access the jim interpreter from here on... */
1080         openocd_sleep_postlude();
1081         startUart();
1082
1083         add_default_dirs();
1084
1085         /* initialize commandline interface */
1086         struct command_context * cmd_ctx;
1087         struct command_context *setup_command_handler(Jim_Interp *interp);
1088         cmd_ctx = setup_command_handler(httpstate.jim_interp);
1089         command_set_output_handler(cmd_ctx, configuration_output_handler, NULL);
1090         command_context_mode(cmd_ctx, COMMAND_CONFIG);
1091
1092         if (ioutil_init(cmd_ctx) != ERROR_OK)
1093                 return EXIT_FAILURE;
1094
1095 #ifdef CYGPKG_PROFILE_GPROF
1096         Jim_CreateCommand(httpstate.jim_interp, "zy1000_profile", zylinjtag_Jim_Command_profile,
1097                         NULL, NULL);
1098 #endif
1099
1100         Jim_CreateCommand(httpstate.jim_interp, "zy1000_uart", zylinjtag_Jim_Command_uart, NULL, NULL);
1101
1102
1103         log_init();
1104
1105         set_log_output(cmd_ctx, log);
1106
1107         LOG_DEBUG("log init complete");
1108
1109         //      diag_printf("Executing config files\n");
1110
1111         if (logAllToSerial)
1112         {
1113                 diag_printf(
1114                                  "%s/logserial = 1 => sending log output to serial port using \"debug_level 3\" as default.\n", zylin_config_dir);
1115                 command_run_line(cmd_ctx, "debug_level 3");
1116         }
1117
1118         command_run_linef(cmd_ctx, "script /rom/openocd.cfg");
1119
1120         int ret;
1121         ret = server_init(cmd_ctx);
1122         if (ERROR_OK != ret)
1123                 return EXIT_FAILURE;
1124
1125         /* we MUST always run the init command as it will launch telnet sessions */
1126         command_run_line(cmd_ctx, "init");
1127
1128         // FIX!!!  Yuk!
1129         // diag_printf() is really invoked from many more places than we trust it
1130         // not to cause instabilities(e.g. invoking fputc() from an interrupt is *BAD*).
1131         //
1132         // Disabling it here is safe and gives us enough logged debug output for now. Crossing
1133         // fingers that it doesn't cause any crashes.
1134         diag_printf("Init complete, GDB & telnet servers launched.\n");
1135         command_set_output_handler(cmd_ctx,
1136                         zy1000_configuration_output_handler_log, NULL);
1137         if (!logAllToSerial)
1138         {
1139                 serialLog = false;
1140         }
1141
1142         /* handle network connections */
1143         server_loop(cmd_ctx);
1144         openocd_sleep_prelude();
1145
1146         /* shut server down */
1147         server_quit();
1148
1149         /* free commandline interface */
1150         command_done(cmd_ctx);
1151         umount("/config");
1152
1153         exit(0);
1154         for (;;)
1155                 ;
1156 }
1157
1158 cyg_int32 cyg_httpd_exec_cgi_tcl(char *file_name);
1159 cyg_int32 homeForm(CYG_HTTPD_STATE *p)
1160 {
1161         cyg_httpd_exec_cgi_tcl("/ram/cgi/index.tcl");
1162         return 0;
1163 }
1164
1165 CYG_HTTPD_HANDLER_TABLE_ENTRY(root_label, "/", homeForm);
1166
1167 CYG_HTTPD_MIME_TABLE_ENTRY(text_mime_label, "text", "text/plain");
1168 CYG_HTTPD_MIME_TABLE_ENTRY(bin_mime_label, "bin", "application/octet-stream");
1169
1170 #include <pkgconf/system.h>
1171 #include <pkgconf/hal.h>
1172 #include <pkgconf/kernel.h>
1173 #include <pkgconf/io_fileio.h>
1174 #include <pkgconf/fs_rom.h>
1175
1176 #include <cyg/kernel/ktypes.h>         // base kernel types
1177 #include <cyg/infra/cyg_trac.h>        // tracing macros
1178 #include <cyg/infra/cyg_ass.h>         // assertion macros
1179 #include <cyg/fileio/fileio.h>
1180 #include <cyg/kernel/kapi.h>
1181 #include <cyg/infra/diag.h>
1182
1183 //==========================================================================
1184 // Eventually we want to eXecute In Place from the ROM in a protected
1185 // environment, so we'll need executables to be aligned to a boundary
1186 // suitable for MMU protection. A suitable boundary would be the 4k
1187 // boundary in all the CPU architectures I am currently aware of.
1188
1189 // Forward definitions
1190
1191 // Filesystem operations
1192 static int tftpfs_mount(cyg_fstab_entry *fste, cyg_mtab_entry *mte);
1193 static int tftpfs_umount(cyg_mtab_entry *mte);
1194 static int tftpfs_open(cyg_mtab_entry *mte, cyg_dir dir, const char *name,
1195                 int mode, cyg_file *fte);
1196 static int tftpfs_fo_read(struct CYG_FILE_TAG *fp, struct CYG_UIO_TAG *uio);
1197 static int tftpfs_fo_write(struct CYG_FILE_TAG *fp, struct CYG_UIO_TAG *uio);
1198
1199 // File operations
1200 static int tftpfs_fo_fsync(struct CYG_FILE_TAG *fp, int mode);
1201 static int tftpfs_fo_close(struct CYG_FILE_TAG *fp);
1202 static int tftpfs_fo_lseek(struct CYG_FILE_TAG *fp, off_t *apos, int whence);
1203
1204 //==========================================================================
1205 // Filesystem table entries
1206
1207 // -------------------------------------------------------------------------
1208 // Fstab entry.
1209 // This defines the entry in the filesystem table.
1210 // For simplicity we use _FILESYSTEM synchronization for all accesses since
1211 // we should never block in any filesystem operations.
1212 #if 1
1213 FSTAB_ENTRY(tftpfs_fste, "tftpfs", 0,
1214                 CYG_SYNCMODE_NONE,
1215                 tftpfs_mount,
1216                 tftpfs_umount,
1217                 tftpfs_open,
1218                 (cyg_fsop_unlink *)cyg_fileio_erofs,
1219                 (cyg_fsop_mkdir *)cyg_fileio_erofs,
1220                 (cyg_fsop_rmdir *)cyg_fileio_erofs,
1221                 (cyg_fsop_rename *)cyg_fileio_erofs,
1222                 (cyg_fsop_link *)cyg_fileio_erofs,
1223                 (cyg_fsop_opendir *)cyg_fileio_erofs,
1224                 (cyg_fsop_chdir *)cyg_fileio_erofs,
1225                 (cyg_fsop_stat *)cyg_fileio_erofs,
1226                 (cyg_fsop_getinfo *)cyg_fileio_erofs,
1227                 (cyg_fsop_setinfo *)cyg_fileio_erofs);
1228 #endif
1229
1230 // -------------------------------------------------------------------------
1231 // mtab entry.
1232 // This defines a single ROMFS loaded into ROM at the configured address
1233 //
1234 // MTAB_ENTRY(rom_mte,  // structure name
1235 //              "/rom",         // mount point
1236 //              "romfs",        // FIlesystem type
1237 //              "",             // hardware device
1238 //  (CYG_ADDRWORD) CYGNUM_FS_ROM_BASE_ADDRESS   // Address in ROM
1239 //);
1240
1241
1242 // -------------------------------------------------------------------------
1243 // File operations.
1244 // This set of file operations are used for normal open files.
1245
1246 static cyg_fileops tftpfs_fileops =
1247 { tftpfs_fo_read, tftpfs_fo_write, tftpfs_fo_lseek,
1248                 (cyg_fileop_ioctl *) cyg_fileio_erofs, cyg_fileio_seltrue,
1249                 tftpfs_fo_fsync, tftpfs_fo_close,
1250                 (cyg_fileop_fstat *) cyg_fileio_erofs,
1251                 (cyg_fileop_getinfo *) cyg_fileio_erofs,
1252                 (cyg_fileop_setinfo *) cyg_fileio_erofs, };
1253
1254 // -------------------------------------------------------------------------
1255 // tftpfs_mount()
1256 // Process a mount request. This mainly finds root for the
1257 // filesystem.
1258
1259 static int tftpfs_mount(cyg_fstab_entry *fste, cyg_mtab_entry *mte)
1260 {
1261         return ENOERR;
1262 }
1263
1264 static int tftpfs_umount(cyg_mtab_entry *mte)
1265 {
1266         return ENOERR;
1267 }
1268
1269 struct Tftp
1270 {
1271         int write;
1272         int readFile;
1273         cyg_uint8 *mem;
1274         int actual;
1275         char *server;
1276         char *file;
1277 };
1278
1279 static void freeTftp(struct Tftp *t)
1280 {
1281         if (t == NULL)
1282                 return;
1283         if (t->mem)
1284                 free(t->mem);
1285         if (t->server)
1286                 free(t->server);
1287         if (t->file)
1288                 free(t->file);
1289         free(t);
1290 }
1291
1292 static const int tftpMaxSize = 8192 * 1024;
1293 static int tftpfs_open(cyg_mtab_entry *mte, cyg_dir dir, const char *name,
1294                 int mode, cyg_file *file)
1295 {
1296         struct Tftp *tftp;
1297         tftp = malloc(sizeof(struct Tftp));
1298         if (tftp == NULL)
1299                 return EMFILE;
1300         memset(tftp, 0, sizeof(struct Tftp));
1301
1302         file->f_flag |= mode & CYG_FILE_MODE_MASK;
1303         file->f_type = CYG_FILE_TYPE_FILE;
1304         file->f_ops = &tftpfs_fileops;
1305         file->f_offset = 0;
1306         file->f_data = 0;
1307         file->f_xops = 0;
1308
1309         tftp->mem = malloc(tftpMaxSize);
1310         if (tftp->mem == NULL)
1311         {
1312                 freeTftp(tftp);
1313                 return EMFILE;
1314         }
1315
1316         char *server = strchr(name, '/');
1317         if (server == NULL)
1318         {
1319                 freeTftp(tftp);
1320                 return EMFILE;
1321         }
1322
1323         tftp->server = malloc(server - name + 1);
1324         if (tftp->server == NULL)
1325         {
1326                 freeTftp(tftp);
1327                 return EMFILE;
1328         }
1329         strncpy(tftp->server, name, server - name);
1330         tftp->server[server - name] = 0;
1331
1332         tftp->file = strdup(server + 1);
1333         if (tftp->file == NULL)
1334         {
1335                 freeTftp(tftp);
1336                 return EMFILE;
1337         }
1338
1339         file->f_data = (CYG_ADDRWORD) tftp;
1340
1341         return ENOERR;
1342 }
1343
1344 static int fetchTftp(struct Tftp *tftp)
1345 {
1346         if (!tftp->readFile)
1347         {
1348                 int err;
1349                 tftp->actual = tftp_client_get(tftp->file, tftp->server, 0, tftp->mem,
1350                                 tftpMaxSize, TFTP_OCTET, &err);
1351
1352                 if (tftp->actual < 0)
1353                 {
1354                         return EMFILE;
1355                 }
1356                 tftp->readFile = 1;
1357         }
1358         return ENOERR;
1359 }
1360
1361 // -------------------------------------------------------------------------
1362 // tftpfs_fo_write()
1363 // Read data from file.
1364
1365 static int tftpfs_fo_read(struct CYG_FILE_TAG *fp, struct CYG_UIO_TAG *uio)
1366 {
1367         struct Tftp *tftp = (struct Tftp *) fp->f_data;
1368
1369         if (fetchTftp(tftp) != ENOERR)
1370                 return EMFILE;
1371
1372         int i;
1373         off_t pos = fp->f_offset;
1374         int resid = 0;
1375         for (i = 0; i < uio->uio_iovcnt; i++)
1376         {
1377                 cyg_iovec *iov = &uio->uio_iov[i];
1378                 char *buf = (char *) iov->iov_base;
1379                 off_t len = iov->iov_len;
1380
1381                 if (len + pos > tftp->actual)
1382                 {
1383                         len = tftp->actual - pos;
1384                 }
1385                 resid += iov->iov_len - len;
1386
1387                 memcpy(buf, tftp->mem + pos, len);
1388                 pos += len;
1389
1390         }
1391         uio->uio_resid = resid;
1392         fp->f_offset = pos;
1393
1394         return ENOERR;
1395 }
1396
1397 static int tftpfs_fo_write(struct CYG_FILE_TAG *fp, struct CYG_UIO_TAG *uio)
1398 {
1399         struct Tftp *tftp = (struct Tftp *) fp->f_data;
1400
1401         int i;
1402         off_t pos = fp->f_offset;
1403         int resid = 0;
1404         for (i = 0; i < uio->uio_iovcnt; i++)
1405         {
1406                 cyg_iovec *iov = &uio->uio_iov[i];
1407                 char *buf = (char *) iov->iov_base;
1408                 off_t len = iov->iov_len;
1409
1410                 if (len + pos > tftpMaxSize)
1411                 {
1412                         len = tftpMaxSize - pos;
1413                 }
1414                 resid += iov->iov_len - len;
1415
1416                 memcpy(tftp->mem + pos, buf, len);
1417                 pos += len;
1418
1419         }
1420         uio->uio_resid = resid;
1421         fp->f_offset = pos;
1422
1423         tftp->write = 1;
1424
1425         return ENOERR;
1426 }
1427
1428 static int tftpfs_fo_fsync(struct CYG_FILE_TAG *fp, int mode)
1429 {
1430         int error = ENOERR;
1431         return error;
1432 }
1433
1434 // -------------------------------------------------------------------------
1435 // romfs_fo_close()
1436 // Close a file. We just clear out the data pointer.
1437
1438 static int tftpfs_fo_close(struct CYG_FILE_TAG *fp)
1439 {
1440         struct Tftp *tftp = (struct Tftp *) fp->f_data;
1441         int error = ENOERR;
1442
1443         if (tftp->write)
1444         {
1445                 tftp_client_put(tftp->file, tftp->server, 0, tftp->mem, fp->f_offset,
1446                                 TFTP_OCTET, &error);
1447         }
1448
1449         freeTftp(tftp);
1450         fp->f_data = 0;
1451         return error;
1452 }
1453
1454 // -------------------------------------------------------------------------
1455 // romfs_fo_lseek()
1456 // Seek to a new file position.
1457
1458 static int tftpfs_fo_lseek(struct CYG_FILE_TAG *fp, off_t *apos, int whence)
1459 {
1460         struct Tftp *tftp = (struct Tftp *) fp->f_data;
1461         off_t pos = *apos;
1462
1463         if (fetchTftp(tftp) != ENOERR)
1464                 return EMFILE;
1465
1466         switch (whence)
1467         {
1468         case SEEK_SET:
1469                 // Pos is already where we want to be.
1470                 break;
1471
1472         case SEEK_CUR:
1473                 // Add pos to current offset.
1474                 pos += fp->f_offset;
1475                 break;
1476
1477         case SEEK_END:
1478                 // Add pos to file size.
1479                 pos += tftp->actual;
1480                 break;
1481
1482         default:
1483                 return EINVAL;
1484         }
1485
1486         // Check that pos is still within current file size, or at the
1487         // very end.
1488         if (pos < 0 || pos > tftp->actual)
1489                 return EINVAL;
1490
1491         // All OK, set fp offset and return new position.
1492         *apos = fp->f_offset = pos;
1493
1494         return ENOERR;
1495 }
1496
1497 void usleep(int us)
1498 {
1499         if (us > 10000)
1500                 cyg_thread_delay(us / 10000 + 1);
1501         else
1502                 HAL_DELAY_US(us);
1503 }
1504
1505 // Chunked version.
1506 cyg_int32 show_log_entry(CYG_HTTPD_STATE *phttpstate)
1507 {
1508         cyg_httpd_start_chunked("text");
1509         if (logCount >= logSize)
1510         {
1511                 cyg_httpd_write_chunked(logBuffer + logCount % logSize, logSize
1512                                 - logCount % logSize);
1513         }
1514         cyg_httpd_write_chunked(logBuffer, writePtr);
1515         cyg_httpd_end_chunked();
1516         return -1;
1517 }
1518
1519 CYG_HTTPD_HANDLER_TABLE_ENTRY(show_log, "/ram/log", show_log_entry);
1520
1521 // Filesystem operations
1522 static int logfs_mount(cyg_fstab_entry *fste, cyg_mtab_entry *mte);
1523 static int logfs_umount(cyg_mtab_entry *mte);
1524 static int logfs_open(cyg_mtab_entry *mte, cyg_dir dir, const char *name,
1525                 int mode, cyg_file *fte);
1526 static int logfs_fo_write(struct CYG_FILE_TAG *fp, struct CYG_UIO_TAG *uio);
1527
1528 // File operations
1529 static int logfs_fo_fsync(struct CYG_FILE_TAG *fp, int mode);
1530 static int logfs_fo_close(struct CYG_FILE_TAG *fp);
1531
1532 #include <cyg/io/devtab.h>
1533
1534 //==========================================================================
1535 // Filesystem table entries
1536
1537 // -------------------------------------------------------------------------
1538 // Fstab entry.
1539 // This defines the entry in the filesystem table.
1540 // For simplicity we use _FILESYSTEM synchronization for all accesses since
1541 // we should never block in any filesystem operations.
1542 FSTAB_ENTRY(logfs_fste, "logfs", 0,
1543                 CYG_SYNCMODE_FILE_FILESYSTEM | CYG_SYNCMODE_IO_FILESYSTEM,
1544                 logfs_mount,
1545                 logfs_umount,
1546                 logfs_open,
1547                 (cyg_fsop_unlink *)cyg_fileio_erofs,
1548                 (cyg_fsop_mkdir *)cyg_fileio_erofs,
1549                 (cyg_fsop_rmdir *)cyg_fileio_erofs,
1550                 (cyg_fsop_rename *)cyg_fileio_erofs,
1551                 (cyg_fsop_link *)cyg_fileio_erofs,
1552                 (cyg_fsop_opendir *)cyg_fileio_erofs,
1553                 (cyg_fsop_chdir *)cyg_fileio_erofs,
1554                 (cyg_fsop_stat *)cyg_fileio_erofs,
1555                 (cyg_fsop_getinfo *)cyg_fileio_erofs,
1556                 (cyg_fsop_setinfo *)cyg_fileio_erofs);
1557
1558 // -------------------------------------------------------------------------
1559 // File operations.
1560 // This set of file operations are used for normal open files.
1561
1562 static cyg_fileops logfs_fileops =
1563 { (cyg_fileop_read *) cyg_fileio_erofs, (cyg_fileop_write *) logfs_fo_write,
1564                 (cyg_fileop_lseek *) cyg_fileio_erofs,
1565                 (cyg_fileop_ioctl *) cyg_fileio_erofs, cyg_fileio_seltrue,
1566                 logfs_fo_fsync, logfs_fo_close, (cyg_fileop_fstat *) cyg_fileio_erofs,
1567                 (cyg_fileop_getinfo *) cyg_fileio_erofs,
1568                 (cyg_fileop_setinfo *) cyg_fileio_erofs, };
1569
1570 // -------------------------------------------------------------------------
1571 // logfs_mount()
1572 // Process a mount request. This mainly finds root for the
1573 // filesystem.
1574
1575 static int logfs_mount(cyg_fstab_entry *fste, cyg_mtab_entry *mte)
1576 {
1577         return ENOERR;
1578 }
1579
1580 static int logfs_umount(cyg_mtab_entry *mte)
1581 {
1582         return ENOERR;
1583 }
1584
1585 static int logfs_open(cyg_mtab_entry *mte, cyg_dir dir, const char *name,
1586                 int mode, cyg_file *file)
1587 {
1588         file->f_flag |= mode & CYG_FILE_MODE_MASK;
1589         file->f_type = CYG_FILE_TYPE_FILE;
1590         file->f_ops = &logfs_fileops;
1591         file->f_offset = 0;
1592         file->f_data = 0;
1593         file->f_xops = 0;
1594         return ENOERR;
1595 }
1596
1597 // -------------------------------------------------------------------------
1598 // logfs_fo_write()
1599 // Write data to file.
1600
1601 static int logfs_fo_write(struct CYG_FILE_TAG *fp, struct CYG_UIO_TAG *uio)
1602 {
1603         int i;
1604         for (i = 0; i < uio->uio_iovcnt; i++)
1605         {
1606                 cyg_iovec *iov = &uio->uio_iov[i];
1607                 char *buf = (char *) iov->iov_base;
1608                 off_t len = iov->iov_len;
1609
1610                 diag_write(buf, len);
1611         }
1612         uio->uio_resid = 0;
1613
1614         return ENOERR;
1615 }
1616 static int logfs_fo_fsync(struct CYG_FILE_TAG *fp, int mode)
1617 {
1618         return ENOERR;
1619 }
1620
1621 // -------------------------------------------------------------------------
1622 // romfs_fo_close()
1623 // Close a file. We just clear out the data pointer.
1624
1625 static int logfs_fo_close(struct CYG_FILE_TAG *fp)
1626 {
1627         return ENOERR;
1628 }
1629
1630 int loadFile(const char *fileName, void **data, int *len);
1631
1632 /* boolean parameter stored on config */
1633 int boolParam(char *var)
1634 {
1635         bool result = false;
1636         char *name = alloc_printf("%s/%s", zylin_config_dir, var);
1637         if (name == NULL)
1638                 return result;
1639
1640         void *data;
1641         int len;
1642         if (loadFile(name, &data, &len) == ERROR_OK)
1643         {
1644                 if (len > 1)
1645                         len = 1;
1646                 result = strncmp((char *) data, "1", len) == 0;
1647                 free(data);
1648         }
1649         free(name);
1650         return result;
1651 }
1652