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