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