git.sur5r.net Git - openocd/blob - src/ecosboard.c

   1 /***************************************************************************
   2  *   Copyright (C) 2007-2008 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 "log.h"
  25 #include "types.h"
  26 #include "jtag.h"
  27 #include "configuration.h"
  28 #include "xsvf.h"
  29 #include "svf.h"
  30 #include "target.h"
  31 #include "flash.h"
  32 #include "nand.h"
  33 #include "pld.h"
  34
  35 #include "command.h"
  36 #include "server.h"
  37 #include "telnet_server.h"
  38 #include "gdb_server.h"
  39
  40 #include <time_support.h>
  41 #include <sys/time.h>
  42 #include <stdio.h>
  43 #include <stdlib.h>
  44 #include <string.h>
  45 #include <unistd.h>
  46 #include <errno.h>
  47
  48 #include <cyg/io/flash.h>
  49 #include <pkgconf/fs_jffs2.h>   // Address of JFFS2
  50 #include <network.h>
  51
  52 #include <fcntl.h>
  53 #include <sys/stat.h>
  54 #include <cyg/fileio/fileio.h>
  55 #include <dirent.h>
  56 #include <cyg/athttpd/http.h>
  57 #include <cyg/athttpd/socket.h>
  58 #include <cyg/athttpd/handler.h>
  59 #include <cyg/athttpd/cgi.h>
  60 #include <cyg/athttpd/forms.h>
  61 #include <cyg/discover/discover.h>
  62 #include <cyg/hal/hal_diag.h>
  63 #include <cyg/kernel/kapi.h>
  64 #include <cyg/io/serialio.h>
  65 #include <cyg/io/io.h>
  66 #include <netinet/tcp.h>
  67 #include "rom.h"
  68 #include <sys/ioctl.h>
  69 #include <sys/socket.h>
  70 #include <netinet/in.h>
  71 #include <net/if.h>
  72 #include <arpa/inet.h>
  73 #include <sys/types.h>
  74 #include <sys/socket.h>
  75 #include <netdb.h>
  76 #include <netinet/in.h>
  77 #include <unistd.h>
  78 #include <arpa/inet.h>
  79 #include <stdio.h>
  80 #include <ifaddrs.h>
  81 #include <string.h>
  82
  83 #include <unistd.h>
  84 #include <stdio.h>
  85
  86
  87 #define MAX_IFS 64
  88 #if defined(CYGPKG_NET_FREEBSD_STACK)
  89 #include <tftp_support.h>
  90 /* posix compatibility broken*/
  91 struct tftpd_fileops fileops =
  92 {
  93         (int (*)(const char *, int))open,
  94         close,
  95         (int (*)(int, const void *, int))write,
  96         ( int (*)(int, void *, int))read
  97 };
  98
  99 #endif
 100
 101
 102 void diag_write(char *buf, int len)
 103 {
 104         int j;
 105         for (j = 0; j < len; j++)
 106         {
 107                 diag_printf("%c", buf[j]);
 108         }
 109 }
 110
 111 static bool serialLog = true;
 112 static bool writeLog = true;
 113
 114 char hwaddr[512];
 115
 116
 117 extern flash_driver_t *flash_drivers[];
 118 extern target_type_t *target_types[];
 119
 120 #ifdef CYGPKG_PROFILE_GPROF
 121 #include <cyg/profile/profile.h>
 122
 123 extern char _stext, _etext; // Defined by the linker
 124
 125 static char *start_of_code=&_stext;
 126 static char *end_of_code=&_etext;
 127
 128 void start_profile(void)
 129 {
 130         // This starts up the system-wide profiling, gathering
 131         // profile information on all of the code, with a 16 byte
 132         // "bucket" size, at a rate of 100us/profile hit.
 133         // Note: a bucket size of 16 will give pretty good function
 134         //       resolution.  Much smaller and the buffer becomes
 135         //       much too large for very little gain.
 136         // Note: a timer period of 100us is also a reasonable
 137         //       compromise.  Any smaller and the overhead of
 138         //       handling the timter (profile) interrupt could
 139         //       swamp the system.  A fast processor might get
 140         //       by with a smaller value, but a slow one could
 141         //       even be swamped by this value.  If the value is
 142         //       too large, the usefulness of the profile is reduced.
 143
 144         // no more interrupts than 1/10ms.
 145         //profile_on((void *)0, (void *)0x40000, 16, 10000); // SRAM
 146         //      profile_on(0, &_etext, 16, 10000); // SRAM & DRAM
 147         profile_on(start_of_code, end_of_code, 16, 10000); // Nios DRAM
 148 }
 149 #endif
 150
 151 static FILE *log;
 152
 153 static char reboot_stack[2048];
 154
 155 static void zylinjtag_reboot(cyg_addrword_t data)
 156 {
 157         serialLog = true;
 158         diag_printf("Rebooting in 100 ticks..\n");
 159         cyg_thread_delay(100);
 160         diag_printf("Unmounting /config..\n");
 161         umount("/config");
 162         diag_printf("Rebooting..\n");
 163         HAL_PLATFORM_RESET();
 164 }
 165 static cyg_thread zylinjtag_thread_object;
 166 static cyg_handle_t zylinjtag_thread_handle;
 167
 168 void reboot(void)
 169 {
 170         cyg_thread_create(1, zylinjtag_reboot, (cyg_addrword_t) 0, "reboot Thread",
 171                         (void *) reboot_stack, sizeof(reboot_stack),
 172                         &zylinjtag_thread_handle, &zylinjtag_thread_object);
 173         cyg_thread_resume(zylinjtag_thread_handle);
 174 }
 175
 176 int configuration_output_handler(struct command_context_s *context,
 177                 const char* line)
 178 {
 179         diag_printf("%s", line);
 180
 181         return ERROR_OK;
 182 }
 183
 184 int zy1000_configuration_output_handler_log(struct command_context_s *context,
 185                 const char* line)
 186 {
 187         LOG_USER_N("%s", line);
 188
 189         return ERROR_OK;
 190 }
 191
 192 #ifdef CYGPKG_PROFILE_GPROF
 193
 194 int eCosBoard_handle_eCosBoard_profile_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
 195 {
 196         command_print(cmd_ctx, "Profiling started");
 197         start_profile();
 198         return ERROR_OK;
 199 }
 200
 201 #endif
 202
 203 externC void phi_init_all_network_interfaces(void);
 204
 205 command_context_t *cmd_ctx;
 206
 207 static bool webRunning = false;
 208
 209 void keep_webserver(void)
 210 {
 211         // Target initialisation is only attempted at startup, so we sleep forever and
 212         // let the http server bail us out(i.e. get config files set up).
 213         diag_printf("OpenOCD has invoked exit().\n"
 214                 "Use web server to correct any configuration settings and reboot.\n");
 215         if (!webRunning)
 216                 reboot();
 217
 218         // exit() will terminate the current thread and we we'll then sleep eternally or
 219         // we'll have a reboot scheduled.
 220 }
 221
 222 extern void printDccChar(char c);
 223
 224 static char logBuffer[128 * 1024];
 225 static const int logSize = sizeof(logBuffer);
 226 int writePtr = 0;
 227 int logCount = 0;
 228
 229 void _zylinjtag_diag_write_char(char c, void **param)
 230 {
 231         if (writeLog)
 232         {
 233                 logBuffer[writePtr] = c;
 234                 writePtr = (writePtr + 1) % logSize;
 235                 logCount++;
 236         }
 237         if (serialLog)
 238         {
 239                 if (c == '\n')
 240                 {
 241                         HAL_DIAG_WRITE_CHAR('\r');
 242                 }
 243                 HAL_DIAG_WRITE_CHAR(c);
 244         }
 245
 246 #ifdef CYGPKG_HAL_ZYLIN_PHI
 247         printDccChar(c);
 248 #endif
 249 }
 250
 251 void copyfile(char *name2, char *name1);
 252
 253 void copydir(char *name, char *destdir);
 254
 255 #if 0
 256 MTAB_ENTRY( romfs_mte1,
 257                 "/rom",
 258                 "romfs",
 259                 "",
 260                 (CYG_ADDRWORD) &filedata[0] );
 261 #endif
 262
 263 void openocd_sleep_prelude(void)
 264 {
 265         cyg_mutex_unlock(&httpstate.jim_lock);
 266 }
 267
 268 void openocd_sleep_postlude(void)
 269 {
 270         cyg_mutex_lock(&httpstate.jim_lock);
 271 }
 272
 273 void format(void)
 274 {
 275         diag_printf("Formatting JFFS2...\n");
 276
 277         cyg_io_handle_t handle;
 278
 279         Cyg_ErrNo err;
 280         err = cyg_io_lookup(CYGDAT_IO_FLASH_BLOCK_DEVICE_NAME_1, &handle);
 281         if (err != ENOERR)
 282         {
 283                 diag_printf("Flash Error cyg_io_lookup: %d\n", err);
 284                 reboot();
 285         }
 286
 287         cyg_uint32 len;
 288         cyg_io_flash_getconfig_devsize_t ds;
 289         len = sizeof(ds);
 290         err = cyg_io_get_config(handle, CYG_IO_GET_CONFIG_FLASH_DEVSIZE, &ds, &len);
 291         if (err != ENOERR)
 292         {
 293                 diag_printf("Flash error cyg_io_get_config %d\n", err);
 294                 reboot();
 295         }
 296
 297         cyg_io_flash_getconfig_erase_t e;
 298         len = sizeof(e);
 299
 300         e.offset = 0;
 301         e.len = ds.dev_size;
 302
 303         diag_printf("Formatting 0x%08x bytes\n", (int)ds.dev_size);
 304         err = cyg_io_get_config(handle, CYG_IO_GET_CONFIG_FLASH_ERASE, &e, &len);
 305         if (err != ENOERR)
 306         {
 307                 diag_printf("Flash erase error %d offset 0x%08x\n", err, e.err_address);
 308                 reboot();
 309         }
 310
 311         diag_printf("Flash formatted successfully\n");
 312
 313         reboot();
 314 }
 315
 316 static int zylinjtag_Jim_Command_format_jffs2(Jim_Interp *interp, int argc,
 317                 Jim_Obj * const *argv)
 318 {
 319         if (argc != 1)
 320         {
 321                 return JIM_ERR;
 322         }
 323
 324         format();
 325         for (;;)
 326                 ;
 327 }
 328
 329 static int zylinjtag_Jim_Command_threads(Jim_Interp *interp, int argc,
 330                 Jim_Obj * const *argv)
 331 {
 332         cyg_handle_t thread = 0;
 333         cyg_uint16 id = 0;
 334         Jim_Obj *threads = Jim_NewListObj(interp, NULL, 0);
 335
 336         /* Loop over the threads, and generate a table row for
 337          * each.
 338          */
 339         while (cyg_thread_get_next(&thread, &id))
 340         {
 341                 Jim_Obj *threadObj = Jim_NewListObj(interp, NULL, 0);
 342
 343                 cyg_thread_info info;
 344                 char *state_string;
 345
 346                 cyg_thread_get_info(thread, id, &info);
 347
 348                 if (info.name == NULL)
 349                         info.name = "<no name>";
 350
 351                 Jim_ListAppendElement(interp, threadObj, Jim_NewStringObj(interp,
 352                                 info.name, strlen(info.name)));
 353
 354                 /* Translate the state into a string.
 355                  */
 356                 if (info.state == 0)
 357                         state_string = "RUN";
 358                 else if (info.state & 0x04)
 359                         state_string = "SUSP";
 360                 else
 361                         switch (info.state & 0x1b)
 362                         {
 363                         case 0x01:
 364                                 state_string = "SLEEP";
 365                                 break;
 366                         case 0x02:
 367                                 state_string = "CNTSLEEP";
 368                                 break;
 369                         case 0x08:
 370                                 state_string = "CREATE";
 371                                 break;
 372                         case 0x10:
 373                                 state_string = "EXIT";
 374                                 break;
 375                         default:
 376                                 state_string = "????";
 377                                 break;
 378                         }
 379
 380                 Jim_ListAppendElement(interp, threadObj, Jim_NewStringObj(interp,
 381                                 state_string, strlen(state_string)));
 382
 383                 Jim_ListAppendElement(interp, threadObj, Jim_NewIntObj(interp, id));
 384                 Jim_ListAppendElement(interp, threadObj, Jim_NewIntObj(interp,
 385                                 info.set_pri));
 386                 Jim_ListAppendElement(interp, threadObj, Jim_NewIntObj(interp,
 387                                 info.cur_pri));
 388
 389                 Jim_ListAppendElement(interp, threads, threadObj);
 390         }
 391         Jim_SetResult(interp, threads);
 392
 393         return JIM_OK;
 394 }
 395
 396 static int zylinjtag_Jim_Command_log(Jim_Interp *interp, int argc,
 397                 Jim_Obj * const *argv)
 398 {
 399         Jim_Obj *tclOutput = Jim_NewStringObj(interp, "", 0);
 400
 401         if (logCount >= logSize)
 402         {
 403                 Jim_AppendString(httpstate.jim_interp, tclOutput, logBuffer + logCount
 404                                 % logSize, logSize - logCount % logSize);
 405         }
 406         Jim_AppendString(httpstate.jim_interp, tclOutput, logBuffer, writePtr);
 407
 408         Jim_SetResult(interp, tclOutput);
 409         return JIM_OK;
 410 }
 411
 412 static int zylinjtag_Jim_Command_reboot(Jim_Interp *interp, int argc,
 413                 Jim_Obj * const *argv)
 414 {
 415         reboot();
 416         return JIM_OK;
 417 }
 418
 419
 420 static void zylinjtag_startNetwork(void)
 421 {
 422         // Bring TCP/IP up immediately before we're ready to accept commands.
 423         //
 424         // That is as soon as a PING responds, we're accepting telnet sessions.
 425 #if defined(CYGPKG_NET_FREEBSD_STACK)
 426         phi_init_all_network_interfaces();
 427 #else
 428         lwip_init();
 429 #endif
 430         if (!eth0_up)
 431         {
 432                 diag_printf("Network not up and running\n");
 433                 exit(-1);
 434         }
 435 #if defined(CYGPKG_NET_FREEBSD_STACK)
 436         /*start TFTP*/
 437         tftpd_start(69, &fileops);
 438 #endif
 439
 440         cyg_httpd_init_tcl_interpreter();
 441
 442         interp = httpstate.jim_interp;
 443
 444         Jim_CreateCommand(httpstate.jim_interp, "log", zylinjtag_Jim_Command_log,
 445                         NULL, NULL);
 446         Jim_CreateCommand(httpstate.jim_interp, "reboot",
 447                         zylinjtag_Jim_Command_reboot, NULL, NULL);
 448         Jim_CreateCommand(httpstate.jim_interp, "threads",
 449                         zylinjtag_Jim_Command_threads, NULL, NULL);
 450         Jim_CreateCommand(httpstate.jim_interp, "format_jffs2",
 451                         zylinjtag_Jim_Command_format_jffs2, NULL, NULL);
 452
 453         cyg_httpd_start();
 454
 455         webRunning = true;
 456
 457         diag_printf("Web server running\n");
 458
 459         int s;
 460         struct ifreq ifr;
 461         s = socket(AF_INET, SOCK_DGRAM, 0);
 462         if (s >= 0)
 463         {
 464                 strcpy(ifr.ifr_name, "eth0");
 465                 int res;
 466                 res = ioctl(s, SIOCGIFHWADDR, &ifr);
 467                 close(s);
 468
 469                 if (res < 0)
 470                 {
 471                         diag_printf("Can't obtain MAC address\n");
 472                         reboot();
 473                 }
 474         }
 475
 476         sprintf(hwaddr, "%02x:%02x:%02x:%02x:%02x:%02x",
 477                         (int) ((unsigned char *) &ifr.ifr_hwaddr.sa_data)[0],
 478                         (int) ((unsigned char *) &ifr.ifr_hwaddr.sa_data)[1],
 479                         (int) ((unsigned char *) &ifr.ifr_hwaddr.sa_data)[2],
 480                         (int) ((unsigned char *) &ifr.ifr_hwaddr.sa_data)[3],
 481                         (int) ((unsigned char *) &ifr.ifr_hwaddr.sa_data)[4],
 482                         (int) ((unsigned char *) &ifr.ifr_hwaddr.sa_data)[5]);
 483
 484         discover_message
 485                         = alloc_printf("ZY1000 Zylin JTAG debugger MAC %s", hwaddr);
 486
 487         discover_launch();
 488 }
 489
 490 static void print_exception_handler(cyg_addrword_t data, cyg_code_t exception,
 491                 cyg_addrword_t info)
 492 {
 493         writeLog = false;
 494         serialLog = true;
 495         char *infoStr = "unknown";
 496         switch (exception)
 497         {
 498 #ifdef CYGNUM_HAL_VECTOR_UNDEF_INSTRUCTION
 499         case CYGNUM_HAL_VECTOR_UNDEF_INSTRUCTION:
 500         infoStr = "undefined instruction";
 501         break;
 502         case CYGNUM_HAL_VECTOR_SOFTWARE_INTERRUPT:
 503         infoStr = "software interrupt";
 504         break;
 505         case CYGNUM_HAL_VECTOR_ABORT_PREFETCH:
 506         infoStr = "abort prefetch";
 507         break;
 508         case CYGNUM_HAL_VECTOR_ABORT_DATA:
 509         infoStr = "abort data";
 510         break;
 511 #endif
 512         default:
 513                 break;
 514         }
 515
 516         diag_printf("Exception: %08x(%s) %08x\n", exception, infoStr, info);
 517
 518         diag_printf("Dumping log\n---\n");
 519         if (logCount >= logSize)
 520         {
 521                 diag_write(logBuffer + logCount % logSize, logSize - logCount % logSize);
 522         }
 523         diag_write(logBuffer, writePtr);
 524
 525         diag_printf("---\nLogdump complete.\n");
 526         diag_printf("Exception: %08x(%s) %08x\n", exception, infoStr, info);
 527         diag_printf("\n---\nRebooting\n");
 528         HAL_PLATFORM_RESET();
 529
 530 }
 531
 532 static void setHandler(cyg_code_t exception)
 533 {
 534         cyg_exception_handler_t *old_handler;
 535         cyg_addrword_t old_data;
 536
 537         cyg_exception_set_handler(exception, print_exception_handler, 0,
 538                         &old_handler, &old_data);
 539 }
 540
 541 static cyg_thread zylinjtag_uart_thread_object;
 542 static cyg_handle_t zylinjtag_uart_thread_handle;
 543 static char uart_stack[4096];
 544
 545 static char forwardBuffer[1024]; // NB! must be smaller than a TCP/IP packet!!!!!
 546 static char backwardBuffer[1024];
 547
 548 void setNoDelay(int session, int flag)
 549 {
 550 #if 1
 551         // This decreases latency dramatically for e.g. GDB load which
 552         // does not have a sliding window protocol
 553         //
 554         // Can cause *lots* of TCP/IP packets to be sent and it would have
 555         // to be enabled/disabled on the fly to avoid the CPU being
 556         // overloaded...
 557         setsockopt(session, /* socket affected */
 558         IPPROTO_TCP, /* set option at TCP level */
 559         TCP_NODELAY, /* name of option */
 560         (char *) &flag, /* the cast is historical
 561          cruft */
 562         sizeof(int)); /* length of option value */
 563 #endif
 564 }
 565
 566 struct
 567 {
 568         int req;
 569         int actual;
 570         int req2;
 571         int actual2;
 572 } tcpipSent[512 * 1024];
 573 int cur;
 574
 575 static void zylinjtag_uart(cyg_addrword_t data)
 576 {
 577         int so_reuseaddr_option = 1;
 578
 579         int fd;
 580         if ((fd = socket(AF_INET, SOCK_STREAM, 0)) == -1)
 581         {
 582                 LOG_ERROR("error creating socket: %s", strerror(errno));
 583                 exit(-1);
 584         }
 585
 586         setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (void*) &so_reuseaddr_option,
 587                         sizeof(int));
 588
 589         struct sockaddr_in sin;
 590         unsigned int address_size;
 591         address_size = sizeof(sin);
 592         memset(&sin, 0, sizeof(sin));
 593         sin.sin_family = AF_INET;
 594         sin.sin_addr.s_addr = INADDR_ANY;
 595         sin.sin_port = htons(5555);
 596
 597         if (bind(fd, (struct sockaddr *) &sin, sizeof(sin)) == -1)
 598         {
 599                 LOG_ERROR("couldn't bind to socket: %s", strerror(errno));
 600                 exit(-1);
 601         }
 602
 603         if (listen(fd, 1) == -1)
 604         {
 605                 LOG_ERROR("couldn't listen on socket: %s", strerror(errno));
 606                 exit(-1);
 607         }
 608         //      socket_nonblock(fd);
 609
 610
 611         for (;;)
 612         {
 613                 int session = accept(fd, (struct sockaddr *) &sin, &address_size);
 614                 if (session < 0)
 615                 {
 616                         continue;
 617                 }
 618
 619                 setNoDelay(session, 1);
 620                 int oldopts = fcntl(session, F_GETFL, 0);
 621                 fcntl(session, F_SETFL, oldopts | O_NONBLOCK); //
 622
 623                 int serHandle = open("/dev/ser0", O_RDWR | O_NONBLOCK);
 624                 if (serHandle < 0)
 625                 {
 626                         close(session);
 627                         continue;
 628                 }
 629
 630 #ifdef CYGPKG_PROFILE_GPROF
 631                 start_profile();
 632 #endif
 633                 size_t actual = 0;
 634                 size_t actual2 = 0;
 635                 size_t pos, pos2;
 636                 pos = 0;
 637                 pos2 = 0;
 638                 cur = 0;
 639                 for (;;)
 640                 {
 641                         fd_set write_fds;
 642                         fd_set read_fds;
 643                         FD_ZERO(&write_fds);
 644                         FD_ZERO(&read_fds);
 645                         int fd_max = -1;
 646                         FD_SET(session, &read_fds);
 647                         fd_max = session;
 648                         FD_SET(serHandle, &read_fds);
 649                         if (serHandle > fd_max)
 650                         {
 651                                 fd_max = serHandle;
 652                         }
 653                         /* Wait... */
 654
 655                         cyg_thread_delay(5); // 50ms fixed delay to wait for data to be sent/received
 656                         if ((actual == 0) && (actual2 == 0))
 657                         {
 658                                 int retval = select(fd_max + 1, &read_fds, NULL, NULL, NULL);
 659                                 if (retval <= 0)
 660                                 {
 661                                         break;
 662                                 }
 663                         }
 664
 665                         if (actual2 <= 0)
 666                         {
 667                                 memset(backwardBuffer, 's', sizeof(backwardBuffer));
 668                                 int t;
 669                                 t = read(serHandle, backwardBuffer,
 670                                                 sizeof(backwardBuffer));
 671                                 actual2 = t;
 672                                 if (t < 0)
 673                                 {
 674                                         if (errno != EAGAIN)
 675                                         {
 676                                                 goto closeSession;
 677                                         }
 678                                         actual2 = 0;
 679                                 }
 680                                 pos2 = 0;
 681                         }
 682
 683                         size_t x = actual2;
 684                         size_t y = 0;
 685                         if (actual2 > 0)
 686                         {
 687                                 int written = write(session, backwardBuffer + pos2, actual2);
 688                                 if (written <= 0)
 689                                         goto closeSession;
 690                                 actual2 -= written;
 691                                 pos2 += written;
 692                                 y = written;
 693                         }
 694
 695                         if (FD_ISSET(session, &read_fds)
 696                                         && (sizeof(forwardBuffer) > actual))
 697                         {
 698                                 // NB! Here it is important that we empty the TCP/IP read buffer
 699                                 // to make transmission tick right
 700                                 memmove(forwardBuffer, forwardBuffer + pos, actual);
 701                                 pos = 0;
 702                                 int t;
 703                                 // this will block if there is no data at all
 704                                 t = read_socket(session, forwardBuffer + actual,
 705                                                 sizeof(forwardBuffer) - actual);
 706                                 if (t <= 0)
 707                                 {
 708                                         goto closeSession;
 709                                 }
 710                                 actual += t;
 711                         }
 712
 713                         int x2 = actual;
 714                         int y2 = 0;
 715                         if (actual > 0)
 716                         {
 717                                 /* Do not put things into the serial buffer if it has something to send
 718                                  * as that can cause a single byte to be sent at the time.
 719                                  *
 720                                  *
 721                                  */
 722                                 int written = write(serHandle, forwardBuffer + pos, actual);
 723                                 if (written < 0)
 724                                 {
 725                                         if (errno != EAGAIN)
 726                                         {
 727                                                 goto closeSession;
 728                                         }
 729                                         // The serial buffer is full
 730                                         written = 0;
 731                                 }
 732                                 else
 733                                 {
 734                                         actual -= written;
 735                                         pos += written;
 736                                 }
 737                                 y2 = written;
 738                         }
 739                         if (cur < 1024)
 740                         {
 741                                 tcpipSent[cur].req = x;
 742                                 tcpipSent[cur].actual = y;
 743                                 tcpipSent[cur].req2 = x2;
 744                                 tcpipSent[cur].actual2 = y2;
 745                                 cur++;
 746                         }
 747
 748                 }
 749                 closeSession: close(session);
 750                 close(serHandle);
 751
 752                 int i;
 753                 for (i = 0; i < 1024; i++)
 754                 {
 755                         diag_printf("%d %d %d %d\n", tcpipSent[i].req, tcpipSent[i].actual,
 756                                         tcpipSent[i].req2, tcpipSent[i].actual2);
 757
 758                 }
 759         }
 760         close(fd);
 761
 762 }
 763
 764 void startUart(void)
 765 {
 766         cyg_thread_create(1, zylinjtag_uart, (cyg_addrword_t) 0, "uart thread",
 767                         (void *) uart_stack, sizeof(uart_stack),
 768                         &zylinjtag_uart_thread_handle, &zylinjtag_uart_thread_object);
 769         cyg_thread_set_priority(zylinjtag_uart_thread_handle, 1); // low priority as it sits in a busy loop
 770         cyg_thread_resume(zylinjtag_uart_thread_handle);
 771 }
 772
 773 int handle_uart_command(struct command_context_s *cmd_ctx, char *cmd,
 774                 char **args, int argc)
 775 {
 776         static int current_baud = 38400;
 777         if (argc == 0)
 778         {
 779                 command_print(cmd_ctx, "%d", current_baud);
 780                 return ERROR_OK;
 781         }
 782         else if (argc != 1)
 783         {
 784                 return ERROR_INVALID_ARGUMENTS;
 785         }
 786
 787         current_baud = atol(args[0]);
 788
 789         int baud;
 790         switch (current_baud)
 791         {
 792         case 9600:
 793                 baud = CYGNUM_SERIAL_BAUD_9600;
 794                 break;
 795         case 19200:
 796                 baud = CYGNUM_SERIAL_BAUD_19200;
 797                 break;
 798         case 38400:
 799                 baud = CYGNUM_SERIAL_BAUD_38400;
 800                 break;
 801         case 57600:
 802                 baud = CYGNUM_SERIAL_BAUD_57600;
 803                 break;
 804         case 115200:
 805                 baud = CYGNUM_SERIAL_BAUD_115200;
 806                 break;
 807         case 230400:
 808                 baud = CYGNUM_SERIAL_BAUD_230400;
 809                 break;
 810         default:
 811                 command_print(cmd_ctx, "unsupported baudrate");
 812                 return ERROR_INVALID_ARGUMENTS;
 813         }
 814
 815         cyg_serial_info_t buf;
 816         cyg_uint32 len = 1;
 817         //get existing serial configuration
 818         len = sizeof(cyg_serial_info_t);
 819         int err;
 820         cyg_io_handle_t serial_handle;
 821
 822         err = cyg_io_lookup("/dev/ser0", &serial_handle);
 823         if (err != ENOERR)
 824         {
 825                 LOG_ERROR("/dev/ser0 not found\n");
 826                 return ERROR_FAIL;
 827         }
 828
 829         err = cyg_io_get_config(serial_handle,
 830                         CYG_IO_GET_CONFIG_SERIAL_OUTPUT_DRAIN, &buf, &len);
 831         err = cyg_io_get_config(serial_handle, CYG_IO_GET_CONFIG_SERIAL_INFO, &buf,
 832                         &len);
 833         if (err != ENOERR)
 834         {
 835                 command_print(cmd_ctx, "Failed to get serial port settings %d", err);
 836                 return ERROR_OK;
 837         }
 838         buf.baud = baud;
 839
 840         err = cyg_io_set_config(serial_handle, CYG_IO_SET_CONFIG_SERIAL_INFO, &buf,
 841                         &len);
 842         if (err != ENOERR)
 843         {
 844                 command_print(cmd_ctx, "Failed to set serial port settings %d", err);
 845                 return ERROR_OK;
 846         }
 847
 848         return ERROR_OK;
 849 }
 850
 851 bool logAllToSerial = false;
 852
 853
 854 int boolParam(char *var);
 855
 856
 857 command_context_t *setup_command_handler(void);
 858
 859 static const char *zylin_config_dir="/config/settings";
 860
 861 int add_default_dirs(void)
 862 {
 863         add_script_search_dir(zylin_config_dir);
 864         add_script_search_dir("/rom/lib/openocd");
 865         add_script_search_dir("/rom");
 866         return ERROR_OK;
 867 }
 868
 869 int ioutil_init(struct command_context_s *cmd_ctx);
 870
 871 int main(int argc, char *argv[])
 872 {
 873         /* ramblockdevice will be the same address every time. The deflate app uses a buffer 16mBytes out, so we
 874          * need to allocate towards the end of the heap.  */
 875
 876 #ifdef CYGNUM_HAL_VECTOR_UNDEF_INSTRUCTION
 877         setHandler(CYGNUM_HAL_VECTOR_UNDEF_INSTRUCTION);
 878         setHandler(CYGNUM_HAL_VECTOR_ABORT_PREFETCH);
 879         setHandler(CYGNUM_HAL_VECTOR_ABORT_DATA);
 880 #endif
 881
 882         int err;
 883
 884         atexit(keep_webserver);
 885
 886         diag_init_putc(_zylinjtag_diag_write_char);
 887         // We want this in the log.
 888         diag_printf("Zylin ZY1000.\n");
 889
 890         err = mount("", "/ram", "ramfs");
 891         if (err < 0)
 892         {
 893                 diag_printf("unable to mount ramfs\n");
 894         }
 895         chdir("/ram");
 896
 897         char address[16];
 898         sprintf(address, "%p", &filedata[0]);
 899         err = mount(address, "/rom", "romfs");
 900         if (err < 0)
 901         {
 902                 diag_printf("unable to mount /rom\n");
 903         }
 904
 905         err = mount("", "/log", "logfs");
 906         if (err < 0)
 907         {
 908                 diag_printf("unable to mount logfs\n");
 909         }
 910
 911         err = mount("", "/tftp", "tftpfs");
 912         if (err < 0)
 913         {
 914                 diag_printf("unable to mount logfs\n");
 915         }
 916
 917         log = fopen("/log/log", "w");
 918         if (log == NULL)
 919         {
 920                 diag_printf("Could not open log file /ram/log\n");
 921                 exit(-1);
 922         }
 923
 924
 925         copydir("/rom", "/ram/cgi");
 926
 927         err = mount("/dev/flash1", "/config", "jffs2");
 928         if (err < 0)
 929         {
 930                 diag_printf("unable to mount jffs2, falling back to ram disk..\n");
 931                 err = mount("", "/config", "ramfs");
 932                 if (err < 0)
 933                 {
 934                         diag_printf("unable to mount /config as ramdisk.\n");
 935                         reboot();
 936                 }
 937         }
 938         else
 939         {
 940                 /* are we using a ram disk instead of a flash disk? This is used
 941                  * for ZY1000 live demo...
 942                  *
 943                  * copy over flash disk to ram block device
 944                  */
 945                 if (boolParam("ramdisk"))
 946                 {
 947                         diag_printf("Unmounting /config from flash and using ram instead\n");
 948                         err = umount("/config");
 949                         if (err < 0)
 950                         {
 951                                 diag_printf("unable to unmount jffs\n");
 952                                 reboot();
 953                         }
 954
 955                         err = mount("/dev/flash1", "/config2", "jffs2");
 956                         if (err < 0)
 957                         {
 958                                 diag_printf("unable to mount jffs\n");
 959                                 reboot();
 960                         }
 961
 962                         err = mount("", "/config", "ramfs");
 963                         if (err < 0)
 964                         {
 965                                 diag_printf("unable to mount ram block device\n");
 966                                 reboot();
 967                         }
 968
 969                         //              copydir("/config2", "/config");
 970                         copyfile("/config2/ip", "/config/ip");
 971                         copydir("/config2/settings", "/config/settings");
 972
 973                         umount("/config2");
 974                 }
 975         }
 976
 977         mkdir(zylin_config_dir, 0777);
 978         char *dirname=alloc_printf("%s/target", zylin_config_dir);
 979         mkdir(dirname, 0777);
 980         free(dirname);
 981         dirname=alloc_printf("%s/board", zylin_config_dir);
 982         mkdir(dirname, 0777);
 983         free(dirname);
 984         dirname=alloc_printf("%s/event", zylin_config_dir);
 985         mkdir(dirname, 0777);
 986         free(dirname);
 987
 988         logAllToSerial = boolParam("logserial");
 989
 990         // We need the network & web server in case there is something wrong with
 991         // the config files that invoke exit()
 992         zylinjtag_startNetwork();
 993
 994         /* we're going to access the jim interpreter from here on... */
 995         openocd_sleep_postlude();
 996         startUart();
 997
 998         add_default_dirs();
 999
1000         /* initialize commandline interface */
1001         command_context_t * cmd_ctx;
1002         cmd_ctx = setup_command_handler();
1003         command_set_output_handler(cmd_ctx, configuration_output_handler, NULL);
1004         command_context_mode(cmd_ctx, COMMAND_CONFIG);
1005
1006 #if BUILD_IOUTIL
1007         if (ioutil_init(cmd_ctx) != ERROR_OK)
1008         {
1009                 return EXIT_FAILURE;
1010         }
1011 #endif
1012
1013
1014 #ifdef CYGPKG_PROFILE_GPROF
1015         register_command(cmd_ctx, NULL, "ecosboard_profile", eCosBoard_handle_eCosBoard_profile_command,
1016                         COMMAND_ANY, NULL);
1017 #endif
1018
1019         register_command(cmd_ctx, NULL, "uart", handle_uart_command, COMMAND_ANY,
1020                         "uart <baud>  - forward uart on port 5555");
1021
1022         int errVal;
1023         errVal = log_init(cmd_ctx);
1024         if (errVal != ERROR_OK)
1025         {
1026                 diag_printf("log_init() failed %d\n", errVal);
1027                 exit(-1);
1028         }
1029
1030         set_log_output(cmd_ctx, log);
1031
1032         LOG_DEBUG("log init complete");
1033
1034         //      diag_printf("Executing config files\n");
1035
1036         if (logAllToSerial)
1037         {
1038                 diag_printf(
1039                                  "%s/logserial=1 => sending log output to serial port using \"debug_level 3\" as default.\n", zylin_config_dir);
1040                 command_run_line(cmd_ctx, "debug_level 3");
1041         }
1042
1043         command_run_linef(cmd_ctx, "script /rom/openocd.cfg");
1044
1045         /* we MUST always run the init command as it will launch telnet sessions */
1046         command_run_line(cmd_ctx, "init");
1047
1048         // FIX!!!  Yuk!
1049         // diag_printf() is really invoked from many more places than we trust it
1050         // not to cause instabilities(e.g. invoking fputc() from an interrupt is *BAD*).
1051         //
1052         // Disabling it here is safe and gives us enough logged debug output for now. Crossing
1053         // fingers that it doesn't cause any crashes.
1054         diag_printf("Init complete, GDB & telnet servers launched.\n");
1055         command_set_output_handler(cmd_ctx,
1056                         zy1000_configuration_output_handler_log, NULL);
1057         if (!logAllToSerial)
1058         {
1059                 serialLog = false;
1060         }
1061
1062         /* handle network connections */
1063         server_loop(cmd_ctx);
1064         openocd_sleep_prelude();
1065
1066         /* shut server down */
1067         server_quit();
1068
1069         /* free commandline interface */
1070         command_done(cmd_ctx);
1071         umount("/config");
1072
1073         exit(0);
1074         for (;;)
1075                 ;
1076 }
1077
1078 cyg_int32 cyg_httpd_exec_cgi_tcl(char *file_name);
1079 cyg_int32 homeForm(CYG_HTTPD_STATE *p)
1080 {
1081         cyg_httpd_exec_cgi_tcl("/ram/cgi/index.tcl");
1082         return 0;
1083 }
1084
1085 CYG_HTTPD_HANDLER_TABLE_ENTRY(root_label, "/", homeForm);
1086
1087 CYG_HTTPD_MIME_TABLE_ENTRY(text_mime_label, "text", "text/plain");
1088 CYG_HTTPD_MIME_TABLE_ENTRY(bin_mime_label, "bin", "application/octet-stream");
1089
1090 #include <pkgconf/system.h>
1091 #include <pkgconf/hal.h>
1092 #include <pkgconf/kernel.h>
1093 #include <pkgconf/io_fileio.h>
1094 #include <pkgconf/fs_rom.h>
1095
1096 #include <cyg/kernel/ktypes.h>         // base kernel types
1097 #include <cyg/infra/cyg_trac.h>        // tracing macros
1098 #include <cyg/infra/cyg_ass.h>         // assertion macros
1099 #include <cyg/fileio/fileio.h>
1100 #include <cyg/kernel/kapi.h>
1101 #include <cyg/infra/diag.h>
1102
1103 //==========================================================================
1104 // Eventually we want to eXecute In Place from the ROM in a protected
1105 // environment, so we'll need executables to be aligned to a boundary
1106 // suitable for MMU protection. A suitable boundary would be the 4k
1107 // boundary in all the CPU architectures I am currently aware of.
1108
1109 // Forward definitions
1110
1111 // Filesystem operations
1112 static int tftpfs_mount(cyg_fstab_entry *fste, cyg_mtab_entry *mte);
1113 static int tftpfs_umount(cyg_mtab_entry *mte);
1114 static int tftpfs_open(cyg_mtab_entry *mte, cyg_dir dir, const char *name,
1115                 int mode, cyg_file *fte);
1116 static int tftpfs_fo_read(struct CYG_FILE_TAG *fp, struct CYG_UIO_TAG *uio);
1117 static int tftpfs_fo_write(struct CYG_FILE_TAG *fp, struct CYG_UIO_TAG *uio);
1118
1119 // File operations
1120 static int tftpfs_fo_fsync(struct CYG_FILE_TAG *fp, int mode);
1121 static int tftpfs_fo_close(struct CYG_FILE_TAG *fp);
1122 static int tftpfs_fo_lseek(struct CYG_FILE_TAG *fp, off_t *apos, int whence);
1123
1124 //==========================================================================
1125 // Filesystem table entries
1126
1127 // -------------------------------------------------------------------------
1128 // Fstab entry.
1129 // This defines the entry in the filesystem table.
1130 // For simplicity we use _FILESYSTEM synchronization for all accesses since
1131 // we should never block in any filesystem operations.
1132 #if 1
1133 FSTAB_ENTRY( tftpfs_fste, "tftpfs", 0,
1134                 CYG_SYNCMODE_NONE,
1135                 tftpfs_mount,
1136                 tftpfs_umount,
1137                 tftpfs_open,
1138                 (cyg_fsop_unlink *)cyg_fileio_erofs,
1139                 (cyg_fsop_mkdir *)cyg_fileio_erofs,
1140                 (cyg_fsop_rmdir *)cyg_fileio_erofs,
1141                 (cyg_fsop_rename *)cyg_fileio_erofs,
1142                 (cyg_fsop_link *)cyg_fileio_erofs,
1143                 (cyg_fsop_opendir *)cyg_fileio_erofs,
1144                 (cyg_fsop_chdir *)cyg_fileio_erofs,
1145                 (cyg_fsop_stat *)cyg_fileio_erofs,
1146                 (cyg_fsop_getinfo *)cyg_fileio_erofs,
1147                 (cyg_fsop_setinfo *)cyg_fileio_erofs);
1148 #endif
1149
1150 // -------------------------------------------------------------------------
1151 // mtab entry.
1152 // This defines a single ROMFS loaded into ROM at the configured address
1153 //
1154 // MTAB_ENTRY(  rom_mte,        // structure name
1155 //              "/rom",         // mount point
1156 //              "romfs",        // FIlesystem type
1157 //              "",             // hardware device
1158 //  (CYG_ADDRWORD) CYGNUM_FS_ROM_BASE_ADDRESS   // Address in ROM
1159 //           );
1160
1161
1162 // -------------------------------------------------------------------------
1163 // File operations.
1164 // This set of file operations are used for normal open files.
1165
1166 static cyg_fileops tftpfs_fileops =
1167 { tftpfs_fo_read, tftpfs_fo_write, tftpfs_fo_lseek,
1168                 (cyg_fileop_ioctl *) cyg_fileio_erofs, cyg_fileio_seltrue,
1169                 tftpfs_fo_fsync, tftpfs_fo_close,
1170                 (cyg_fileop_fstat *) cyg_fileio_erofs,
1171                 (cyg_fileop_getinfo *) cyg_fileio_erofs,
1172                 (cyg_fileop_setinfo *) cyg_fileio_erofs, };
1173
1174 // -------------------------------------------------------------------------
1175 // tftpfs_mount()
1176 // Process a mount request. This mainly finds root for the
1177 // filesystem.
1178
1179 static int tftpfs_mount(cyg_fstab_entry *fste, cyg_mtab_entry *mte)
1180 {
1181         return ENOERR;
1182 }
1183
1184 static int tftpfs_umount(cyg_mtab_entry *mte)
1185 {
1186         return ENOERR;
1187 }
1188
1189 struct Tftp
1190 {
1191         int write;
1192         int readFile;
1193         cyg_uint8 *mem;
1194         int actual;
1195         char *server;
1196         char *file;
1197 };
1198
1199 static void freeTftp(struct Tftp *t)
1200 {
1201         if (t == NULL)
1202                 return;
1203         if (t->mem)
1204                 free(t->mem);
1205         if (t->server)
1206                 free(t->server);
1207         if (t->file)
1208                 free(t->file);
1209         free(t);
1210 }
1211
1212 static const int tftpMaxSize = 8192 * 1024;
1213 static int tftpfs_open(cyg_mtab_entry *mte, cyg_dir dir, const char *name,
1214                 int mode, cyg_file *file)
1215 {
1216         struct Tftp *tftp;
1217         tftp = malloc(sizeof(struct Tftp));
1218         if (tftp == NULL)
1219                 return EMFILE;
1220         memset(tftp, 0, sizeof(struct Tftp));
1221
1222         file->f_flag |= mode & CYG_FILE_MODE_MASK;
1223         file->f_type = CYG_FILE_TYPE_FILE;
1224         file->f_ops = &tftpfs_fileops;
1225         file->f_offset = 0;
1226         file->f_data = 0;
1227         file->f_xops = 0;
1228
1229         tftp->mem = malloc(tftpMaxSize);
1230         if (tftp->mem == NULL)
1231         {
1232                 freeTftp(tftp);
1233                 return EMFILE;
1234         }
1235
1236         char *server = strchr(name, '/');
1237         if (server == NULL)
1238         {
1239                 freeTftp(tftp);
1240                 return EMFILE;
1241         }
1242
1243         tftp->server = malloc(server - name + 1);
1244         if (tftp->server == NULL)
1245         {
1246                 freeTftp(tftp);
1247                 return EMFILE;
1248         }
1249         strncpy(tftp->server, name, server - name);
1250         tftp->server[server - name] = 0;
1251
1252         tftp->file = strdup(server + 1);
1253         if (tftp->file == NULL)
1254         {
1255                 freeTftp(tftp);
1256                 return EMFILE;
1257         }
1258
1259         file->f_data = (CYG_ADDRWORD) tftp;
1260
1261         return ENOERR;
1262 }
1263
1264 static int fetchTftp(struct Tftp *tftp)
1265 {
1266         if (!tftp->readFile)
1267         {
1268                 int err;
1269                 tftp->actual = tftp_client_get(tftp->file, tftp->server, 0, tftp->mem,
1270                                 tftpMaxSize, TFTP_OCTET, &err);
1271
1272                 if (tftp->actual < 0)
1273                 {
1274                         return EMFILE;
1275                 }
1276                 tftp->readFile = 1;
1277         }
1278         return ENOERR;
1279 }
1280
1281 // -------------------------------------------------------------------------
1282 // tftpfs_fo_write()
1283 // Read data from file.
1284
1285 static int tftpfs_fo_read(struct CYG_FILE_TAG *fp, struct CYG_UIO_TAG *uio)
1286 {
1287         struct Tftp *tftp = (struct Tftp *) fp->f_data;
1288
1289         if (fetchTftp(tftp) != ENOERR)
1290                 return EMFILE;
1291
1292         int i;
1293         off_t pos = fp->f_offset;
1294         int resid = 0;
1295         for (i = 0; i < uio->uio_iovcnt; i++)
1296         {
1297                 cyg_iovec *iov = &uio->uio_iov[i];
1298                 char *buf = (char *) iov->iov_base;
1299                 off_t len = iov->iov_len;
1300
1301                 if (len + pos > tftp->actual)
1302                 {
1303                         len = tftp->actual - pos;
1304                 }
1305                 resid += iov->iov_len - len;
1306
1307                 memcpy(buf, tftp->mem + pos, len);
1308                 pos += len;
1309
1310         }
1311         uio->uio_resid = resid;
1312         fp->f_offset = pos;
1313
1314         return ENOERR;
1315 }
1316
1317 static int tftpfs_fo_write(struct CYG_FILE_TAG *fp, struct CYG_UIO_TAG *uio)
1318 {
1319         struct Tftp *tftp = (struct Tftp *) fp->f_data;
1320
1321         int i;
1322         off_t pos = fp->f_offset;
1323         int resid = 0;
1324         for (i = 0; i < uio->uio_iovcnt; i++)
1325         {
1326                 cyg_iovec *iov = &uio->uio_iov[i];
1327                 char *buf = (char *) iov->iov_base;
1328                 off_t len = iov->iov_len;
1329
1330                 if (len + pos > tftpMaxSize)
1331                 {
1332                         len = tftpMaxSize - pos;
1333                 }
1334                 resid += iov->iov_len - len;
1335
1336                 memcpy(tftp->mem + pos, buf, len);
1337                 pos += len;
1338
1339         }
1340         uio->uio_resid = resid;
1341         fp->f_offset = pos;
1342
1343         tftp->write = 1;
1344
1345         return ENOERR;
1346 }
1347
1348 static int tftpfs_fo_fsync(struct CYG_FILE_TAG *fp, int mode)
1349 {
1350         int error = ENOERR;
1351         return error;
1352 }
1353
1354 // -------------------------------------------------------------------------
1355 // romfs_fo_close()
1356 // Close a file. We just clear out the data pointer.
1357
1358 static int tftpfs_fo_close(struct CYG_FILE_TAG *fp)
1359 {
1360         struct Tftp *tftp = (struct Tftp *) fp->f_data;
1361         int error = ENOERR;
1362
1363         if (tftp->write)
1364         {
1365                 tftp_client_put(tftp->file, tftp->server, 0, tftp->mem, fp->f_offset,
1366                                 TFTP_OCTET, &error);
1367         }
1368
1369         freeTftp(tftp);
1370         fp->f_data = 0;
1371         return error;
1372 }
1373
1374 // -------------------------------------------------------------------------
1375 // romfs_fo_lseek()
1376 // Seek to a new file position.
1377
1378 static int tftpfs_fo_lseek(struct CYG_FILE_TAG *fp, off_t *apos, int whence)
1379 {
1380         struct Tftp *tftp = (struct Tftp *) fp->f_data;
1381         off_t pos = *apos;
1382
1383         if (fetchTftp(tftp) != ENOERR)
1384                 return EMFILE;
1385
1386         switch (whence)
1387         {
1388         case SEEK_SET:
1389                 // Pos is already where we want to be.
1390                 break;
1391
1392         case SEEK_CUR:
1393                 // Add pos to current offset.
1394                 pos += fp->f_offset;
1395                 break;
1396
1397         case SEEK_END:
1398                 // Add pos to file size.
1399                 pos += tftp->actual;
1400                 break;
1401
1402         default:
1403                 return EINVAL;
1404         }
1405
1406         // Check that pos is still within current file size, or at the
1407         // very end.
1408         if (pos < 0 || pos > tftp->actual)
1409                 return EINVAL;
1410
1411         // All OK, set fp offset and return new position.
1412         *apos = fp->f_offset = pos;
1413
1414         return ENOERR;
1415 }
1416
1417 void usleep(int us)
1418 {
1419         if (us > 10000)
1420                 cyg_thread_delay(us / 10000 + 1);
1421         else
1422                 HAL_DELAY_US(us);
1423 }
1424
1425 // Chunked version.
1426 cyg_int32 show_log_entry(CYG_HTTPD_STATE *phttpstate)
1427 {
1428         cyg_httpd_start_chunked("text");
1429         if (logCount >= logSize)
1430         {
1431                 cyg_httpd_write_chunked(logBuffer + logCount % logSize, logSize
1432                                 - logCount % logSize);
1433         }
1434         cyg_httpd_write_chunked(logBuffer, writePtr);
1435         cyg_httpd_end_chunked();
1436         return -1;
1437 }
1438
1439 CYG_HTTPD_HANDLER_TABLE_ENTRY(show_log, "/ram/log", show_log_entry);
1440
1441 // Filesystem operations
1442 static int logfs_mount(cyg_fstab_entry *fste, cyg_mtab_entry *mte);
1443 static int logfs_umount(cyg_mtab_entry *mte);
1444 static int logfs_open(cyg_mtab_entry *mte, cyg_dir dir, const char *name,
1445                 int mode, cyg_file *fte);
1446 static int logfs_fo_write(struct CYG_FILE_TAG *fp, struct CYG_UIO_TAG *uio);
1447
1448 // File operations
1449 static int logfs_fo_fsync(struct CYG_FILE_TAG *fp, int mode);
1450 static int logfs_fo_close(struct CYG_FILE_TAG *fp);
1451
1452 #include <cyg/io/devtab.h>
1453
1454 //==========================================================================
1455 // Filesystem table entries
1456
1457 // -------------------------------------------------------------------------
1458 // Fstab entry.
1459 // This defines the entry in the filesystem table.
1460 // For simplicity we use _FILESYSTEM synchronization for all accesses since
1461 // we should never block in any filesystem operations.
1462 FSTAB_ENTRY( logfs_fste, "logfs", 0,
1463                 CYG_SYNCMODE_FILE_FILESYSTEM|CYG_SYNCMODE_IO_FILESYSTEM,
1464                 logfs_mount,
1465                 logfs_umount,
1466                 logfs_open,
1467                 (cyg_fsop_unlink *)cyg_fileio_erofs,
1468                 (cyg_fsop_mkdir *)cyg_fileio_erofs,
1469                 (cyg_fsop_rmdir *)cyg_fileio_erofs,
1470                 (cyg_fsop_rename *)cyg_fileio_erofs,
1471                 (cyg_fsop_link *)cyg_fileio_erofs,
1472                 (cyg_fsop_opendir *)cyg_fileio_erofs,
1473                 (cyg_fsop_chdir *)cyg_fileio_erofs,
1474                 (cyg_fsop_stat *)cyg_fileio_erofs,
1475                 (cyg_fsop_getinfo *)cyg_fileio_erofs,
1476                 (cyg_fsop_setinfo *)cyg_fileio_erofs);
1477
1478 // -------------------------------------------------------------------------
1479 // File operations.
1480 // This set of file operations are used for normal open files.
1481
1482 static cyg_fileops logfs_fileops =
1483 { (cyg_fileop_read *) cyg_fileio_erofs, (cyg_fileop_write *) logfs_fo_write,
1484                 (cyg_fileop_lseek *) cyg_fileio_erofs,
1485                 (cyg_fileop_ioctl *) cyg_fileio_erofs, cyg_fileio_seltrue,
1486                 logfs_fo_fsync, logfs_fo_close, (cyg_fileop_fstat *) cyg_fileio_erofs,
1487                 (cyg_fileop_getinfo *) cyg_fileio_erofs,
1488                 (cyg_fileop_setinfo *) cyg_fileio_erofs, };
1489
1490 // -------------------------------------------------------------------------
1491 // logfs_mount()
1492 // Process a mount request. This mainly finds root for the
1493 // filesystem.
1494
1495 static int logfs_mount(cyg_fstab_entry *fste, cyg_mtab_entry *mte)
1496 {
1497         return ENOERR;
1498 }
1499
1500 static int logfs_umount(cyg_mtab_entry *mte)
1501 {
1502         return ENOERR;
1503 }
1504
1505 static int logfs_open(cyg_mtab_entry *mte, cyg_dir dir, const char *name,
1506                 int mode, cyg_file *file)
1507 {
1508         file->f_flag |= mode & CYG_FILE_MODE_MASK;
1509         file->f_type = CYG_FILE_TYPE_FILE;
1510         file->f_ops = &logfs_fileops;
1511         file->f_offset = 0;
1512         file->f_data = 0;
1513         file->f_xops = 0;
1514         return ENOERR;
1515 }
1516
1517 // -------------------------------------------------------------------------
1518 // logfs_fo_write()
1519 // Write data to file.
1520
1521 static int logfs_fo_write(struct CYG_FILE_TAG *fp, struct CYG_UIO_TAG *uio)
1522 {
1523         int i;
1524         for (i = 0; i < uio->uio_iovcnt; i++)
1525         {
1526                 cyg_iovec *iov = &uio->uio_iov[i];
1527                 char *buf = (char *) iov->iov_base;
1528                 off_t len = iov->iov_len;
1529
1530                 diag_write(buf, len);
1531         }
1532         uio->uio_resid = 0;
1533
1534         return ENOERR;
1535 }
1536 static int logfs_fo_fsync(struct CYG_FILE_TAG *fp, int mode)
1537 {
1538         return ENOERR;
1539 }
1540
1541 // -------------------------------------------------------------------------
1542 // romfs_fo_close()
1543 // Close a file. We just clear out the data pointer.
1544
1545 static int logfs_fo_close(struct CYG_FILE_TAG *fp)
1546 {
1547         return ENOERR;
1548 }
1549
1550 int loadFile(const char *fileName, void **data, int *len);
1551
1552 /* boolean parameter stored on config */
1553 int boolParam(char *var)
1554 {
1555         bool result = false;
1556         char *name = alloc_printf("%s/%s", zylin_config_dir, var);
1557         if (name == NULL)
1558                 return result;
1559
1560         void *data;
1561         int len;
1562         if (loadFile(name, &data, &len) == ERROR_OK)
1563         {
1564                 if (len > 1)
1565                         len = 1;
1566                 result = strncmp((char *) data, "1", len) == 0;
1567                 free(data);
1568         }
1569         free(name);
1570         return result;
1571 }
1572