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