src/ecosboard.c

   1 /***************************************************************************
   2  *   Copyright (C) 2007-2009 by Øyvind Harboe                              *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, or     *
   7  *   (at your option) any later version.                                   *
   8  *                                                                         *
   9  *   This program is distributed in the hope that it will be useful,       *
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  12  *   GNU General Public License for more details.                          *
  13  *                                                                         *
  14  *   You should have received a copy of the GNU General Public License     *
  15  *   along with this program; if not, write to the                         *
  16  *   Free Software Foundation, Inc.,                                       *
  17  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  18  ***************************************************************************/
  19
  20 #ifdef HAVE_CONFIG_H
  21 #include "config.h"
  22 #endif
  23
  24 #include <helper/types.h>
  25 #include <jtag/jtag.h>
  26 #include <helper/ioutil.h>
  27 #include <helper/configuration.h>
  28
  29 #include <server/server.h>
  30 #include <server/telnet_server.h>
  31 #include <server/gdb_server.h>
  32 #include <openocd.h>
  33
  34 #include <helper/time_support.h>
  35
  36 #include <sys/time.h>
  37 #include <stdio.h>
  38 #include <stdlib.h>
  39 #include <string.h>
  40 #include <unistd.h>
  41 #include <errno.h>
  42
  43 #include <cyg/io/flash.h>
  44 #include <pkgconf/fs_jffs2.h>   // Address of JFFS2
  45 #include <network.h>
  46
  47 #include <fcntl.h>
  48 #include <sys/stat.h>
  49 #include <cyg/fileio/fileio.h>
  50 #include <dirent.h>
  51 #include <cyg/athttpd/http.h>
  52 #include <cyg/athttpd/socket.h>
  53 #include <cyg/athttpd/handler.h>
  54 #include <cyg/athttpd/cgi.h>
  55 #include <cyg/athttpd/forms.h>
  56 #include <cyg/discover/discover.h>
  57 #include <cyg/io/io.h>
  58 #include <cyg/io/serialio.h>
  59 #include <netinet/tcp.h>
  60 #include <cyg/hal/hal_diag.h>
  61
  62 #include "rom.h"
  63
  64 #ifdef CYGPKG_HAL_NIOS2
  65 #include <cyg/hal/io.h>
  66 #define ZY1000_SER_DEV "/dev/uart_0"
  67 #else
  68 #define ZY1000_SER_DEV "/dev/ser0"
  69
  70 #endif
  71
  72
  73 #define MAX_IFS 64
  74 #if defined(CYGPKG_NET_FREEBSD_STACK)
  75 #include <tftp_support.h>
  76 /* posix compatibility broken*/
  77 struct tftpd_fileops fileops =
  78 {
  79         (int (*)(const char *, int))open,
  80         close,
  81         (int (*)(int, const void *, int))write,
  82         (int (*)(int, void *, int))read
  83 };
  84
  85 #endif
  86
  87
  88 void diag_write(char *buf, int len)
  89 {
  90         int j;
  91         for (j = 0; j < len; j++)
  92         {
  93                 diag_printf("%c", buf[j]);
  94         }
  95 }
  96
  97 static bool serialLog = true;
  98 static bool writeLog = true;
  99
 100 char hwaddr[512];
 101
 102
 103 extern struct flash_driver *flash_drivers[];
 104 extern struct target_type *target_types[];
 105
 106 #ifdef CYGPKG_PROFILE_GPROF
 107 #include <cyg/profile/profile.h>
 108
 109 extern char _stext, _etext; // Defined by the linker
 110
 111 static char *start_of_code=&_stext;
 112 static char *end_of_code=&_etext;
 113
 114 void start_profile(void)
 115 {
 116         // This starts up the system-wide profiling, gathering
 117         // profile information on all of the code, with a 16 byte
 118         // "bucket" size, at a rate of 100us/profile hit.
 119         // Note: a bucket size of 16 will give pretty good function
 120         //       resolution.  Much smaller and the buffer becomes
 121         //       much too large for very little gain.
 122         // Note: a timer period of 100us is also a reasonable
 123         //       compromise.  Any smaller and the overhead of
 124         //       handling the timter (profile) interrupt could
 125         //       swamp the system.  A fast processor might get
 126         //       by with a smaller value, but a slow one could
 127         //       even be swamped by this value.  If the value is
 128         //       too large, the usefulness of the profile is reduced.
 129
 130         // no more interrupts than 1/10ms.
 131         //profile_on((void *)0, (void *)0x40000, 16, 10000); // SRAM
 132         //      profile_on(0, &_etext, 16, 10000); // SRAM & DRAM
 133         profile_on(start_of_code, end_of_code, 16, 10000); // Nios DRAM
 134 }
 135 #endif
 136
 137 static FILE *log;
 138
 139 static char reboot_stack[2048];
 140
 141 static void zylinjtag_reboot(cyg_addrword_t data)
 142 {
 143         serialLog = true;
 144         diag_printf("Rebooting in 500 ticks..\n");
 145         cyg_thread_delay(500);
 146         diag_printf("Unmounting /config..\n");
 147         umount("/config");
 148         diag_printf("Rebooting..\n");
 149 #ifdef CYGPKG_HAL_NIOS2
 150         /* This will reboot & reconfigure the FPGA from the bootloader
 151          * and on.
 152          */
 153         IOWR(REMOTE_UPDATE_BASE, 0x20, 0x1);
 154 #else
 155         HAL_PLATFORM_RESET();
 156 #endif
 157 }
 158 static cyg_thread zylinjtag_thread_object;
 159 static cyg_handle_t zylinjtag_thread_handle;
 160
 161 void reboot(void)
 162 {
 163         cyg_thread_create(1, zylinjtag_reboot, (cyg_addrword_t) 0, "reboot Thread",
 164                         (void *) reboot_stack, sizeof(reboot_stack),
 165                         &zylinjtag_thread_handle, &zylinjtag_thread_object);
 166         cyg_thread_resume(zylinjtag_thread_handle);
 167 }
 168
 169 static char zylinjtag_reboot_port_stack[2048];
 170 static cyg_thread zylinjtag_reboot_port_thread_object;
 171 static cyg_handle_t zylinjtag_reboot_port_thread_handle;
 172
 173 static void zylinjtag_reboot_port_task(cyg_addrword_t data)
 174 {
 175         int so_reuseaddr_option = 1;
 176
 177         int fd;
 178         if ((fd = socket(AF_INET, SOCK_STREAM, 0)) == -1)
 179         {
 180                 LOG_ERROR("error creating socket: %s", strerror(errno));
 181                 exit(-1);
 182         }
 183
 184         setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (void*) &so_reuseaddr_option,
 185                         sizeof(int));
 186
 187         struct sockaddr_in sin;
 188         unsigned int address_size;
 189         address_size = sizeof(sin);
 190         memset(&sin, 0, sizeof(sin));
 191         sin.sin_family = AF_INET;
 192         sin.sin_addr.s_addr = INADDR_ANY;
 193         sin.sin_port = htons(1234);
 194
 195         if (bind(fd, (struct sockaddr *) &sin, sizeof(sin)) == -1)
 196         {
 197                 LOG_ERROR("couldn't bind to socket: %s", strerror(errno));
 198                 exit(-1);
 199         }
 200
 201         if (listen(fd, 1) == -1)
 202         {
 203                 LOG_ERROR("couldn't listen on socket: %s", strerror(errno));
 204                 exit(-1);
 205         }
 206         //      socket_nonblock(fd);
 207
 208
 209         accept(fd, (struct sockaddr *) &sin, &address_size);
 210
 211         diag_printf("Got reboot signal on port 1234");
 212
 213         reboot();
 214
 215 }
 216
 217 void reboot_port(void)
 218 {
 219         cyg_thread_create(1, zylinjtag_reboot_port_task, (cyg_addrword_t) 0, "wait for reboot signal on port 1234",
 220                         (void *) zylinjtag_reboot_port_stack, sizeof(zylinjtag_reboot_port_stack),
 221                         &zylinjtag_reboot_port_thread_handle, &zylinjtag_reboot_port_thread_object);
 222         cyg_thread_resume(zylinjtag_reboot_port_thread_handle);
 223 }
 224
 225 int configuration_output_handler(struct command_context *context,
 226                 const char* line)
 227 {
 228         diag_printf("%s", line);
 229
 230         return ERROR_OK;
 231 }
 232
 233 int zy1000_configuration_output_handler_log(struct command_context *context,
 234                 const char* line)
 235 {
 236         LOG_USER_N("%s", line);
 237
 238         return ERROR_OK;
 239 }
 240
 241 #ifdef CYGPKG_PROFILE_GPROF
 242 //extern int64_t totaltime;
 243
 244 static int zylinjtag_Jim_Command_profile(Jim_Interp *interp, int argc,
 245                 Jim_Obj * const *argv)
 246 {
 247         if ((argc == 2) && (strcmp(Jim_GetString(argv[1], NULL), "stats")==0))
 248         {
 249 //              profile_off();
 250                 //LOG_USER("Stats %dms sleeping in select()", (int)totaltime);
 251         } else
 252         {
 253                 LOG_USER("Profiling started");
 254                 start_profile();
 255                 //totaltime = 0;
 256         }
 257         return ERROR_OK;
 258 }
 259
 260 #endif
 261
 262 externC void phi_init_all_network_interfaces(void);
 263
 264 struct command_context *cmd_ctx;
 265
 266 static bool webRunning = false;
 267
 268 void keep_webserver(void)
 269 {
 270         // Target initialisation is only attempted at startup, so we sleep forever and
 271         // let the http server bail us out(i.e. get config files set up).
 272         diag_printf("OpenOCD has invoked exit().\n"
 273                 "Use web server to correct any configuration settings and reboot.\n");
 274         if (!webRunning)
 275                 reboot();
 276
 277         // exit() will terminate the current thread and we we'll then sleep eternally or
 278         // we'll have a reboot scheduled.
 279 }
 280
 281 extern void printDccChar(char c);
 282
 283 static char logBuffer[128 * 1024];
 284 static const int logSize = sizeof(logBuffer);
 285 int writePtr = 0;
 286 int logCount = 0;
 287
 288 void _zylinjtag_diag_write_char(char c, void **param)
 289 {
 290         if (writeLog)
 291         {
 292                 logBuffer[writePtr] = c;
 293                 writePtr = (writePtr + 1) % logSize;
 294                 logCount++;
 295         }
 296         if (serialLog)
 297         {
 298                 if (c == '\n')
 299                 {
 300                         HAL_DIAG_WRITE_CHAR('\r');
 301                 }
 302                 HAL_DIAG_WRITE_CHAR(c);
 303         }
 304
 305 #ifdef CYGPKG_HAL_ZYLIN_PHI
 306         printDccChar(c);
 307 #endif
 308 }
 309
 310 void copyfile(char *name2, char *name1);
 311
 312 void copydir(char *name, char *destdir);
 313
 314 #if 0
 315 MTAB_ENTRY(romfs_mte1,
 316                 "/rom",
 317                 "romfs",
 318                 "",
 319                 (CYG_ADDRWORD) &filedata[0]);
 320 #endif
 321
 322 void openocd_sleep_prelude(void)
 323 {
 324         cyg_mutex_unlock(&httpstate.jim_lock);
 325 }
 326
 327 void openocd_sleep_postlude(void)
 328 {
 329         cyg_mutex_lock(&httpstate.jim_lock);
 330 }
 331
 332 void format(void)
 333 {
 334 #ifdef CYGDAT_IO_FLASH_BLOCK_DEVICE_NAME_1
 335         diag_printf("Formatting JFFS2...\n");
 336
 337         cyg_io_handle_t handle;
 338
 339         Cyg_ErrNo err;
 340         err = cyg_io_lookup(CYGDAT_IO_FLASH_BLOCK_DEVICE_NAME_1, &handle);
 341         if (err != ENOERR)
 342         {
 343                 diag_printf("Flash Error cyg_io_lookup: %d\n", err);
 344                 reboot();
 345         }
 346
 347         cyg_uint32 len;
 348         cyg_io_flash_getconfig_devsize_t ds;
 349         len = sizeof(ds);
 350         err = cyg_io_get_config(handle, CYG_IO_GET_CONFIG_FLASH_DEVSIZE, &ds, &len);
 351         if (err != ENOERR)
 352         {
 353                 diag_printf("Flash error cyg_io_get_config %d\n", err);
 354                 reboot();
 355         }
 356
 357         cyg_io_flash_getconfig_erase_t e;
 358         len = sizeof(e);
 359
 360         e.offset = 0;
 361         e.len = ds.dev_size;
 362
 363         diag_printf("Formatting 0x%08x bytes\n", (int)ds.dev_size);
 364         err = cyg_io_get_config(handle, CYG_IO_GET_CONFIG_FLASH_ERASE, &e, &len);
 365         if (err != ENOERR)
 366         {
 367                 diag_printf("Flash erase error %d offset 0x%08x\n", err, e.err_address);
 368                 reboot();
 369         }
 370
 371         diag_printf("Flash formatted successfully\n");
 372 #endif
 373
 374         reboot();
 375 }
 376
 377 static int zylinjtag_Jim_Command_format_jffs2(Jim_Interp *interp, int argc,
 378                 Jim_Obj * const *argv)
 379 {
 380         if (argc != 1)
 381         {
 382                 return JIM_ERR;
 383         }
 384
 385         format();
 386         for (;;)
 387                 ;
 388 }
 389
 390 static int zylinjtag_Jim_Command_threads(Jim_Interp *interp, int argc,
 391                 Jim_Obj * const *argv)
 392 {
 393         cyg_handle_t thread = 0;
 394         cyg_uint16 id = 0;
 395         Jim_Obj *threads = Jim_NewListObj(interp, NULL, 0);
 396
 397         /* Loop over the threads, and generate a table row for
 398          * each.
 399          */
 400         while (cyg_thread_get_next(&thread, &id))
 401         {
 402                 Jim_Obj *threadObj = Jim_NewListObj(interp, NULL, 0);
 403
 404                 cyg_thread_info info;
 405                 char *state_string;
 406
 407                 cyg_thread_get_info(thread, id, &info);
 408
 409                 if (info.name == NULL)
 410                         info.name = "<no name>";
 411
 412                 Jim_ListAppendElement(interp, threadObj, Jim_NewStringObj(interp,
 413                                 info.name, strlen(info.name)));
 414
 415                 /* Translate the state into a string.
 416                  */
 417                 if (info.state == 0)
 418                         state_string = "RUN";
 419                 else if (info.state & 0x04)
 420                         state_string = "SUSP";
 421                 else
 422                         switch (info.state & 0x1b)
 423                         {
 424                         case 0x01:
 425                                 state_string = "SLEEP";
 426                                 break;
 427                         case 0x02:
 428                                 state_string = "CNTSLEEP";
 429                                 break;
 430                         case 0x08:
 431                                 state_string = "CREATE";
 432                                 break;
 433                         case 0x10:
 434                                 state_string = "EXIT";
 435                                 break;
 436                         default:
 437                                 state_string = "????";
 438                                 break;
 439                         }
 440
 441                 Jim_ListAppendElement(interp, threadObj, Jim_NewStringObj(interp,
 442                                 state_string, strlen(state_string)));
 443
 444                 Jim_ListAppendElement(interp, threadObj, Jim_NewIntObj(interp, id));
 445                 Jim_ListAppendElement(interp, threadObj, Jim_NewIntObj(interp,
 446                                 info.set_pri));
 447                 Jim_ListAppendElement(interp, threadObj, Jim_NewIntObj(interp,
 448                                 info.cur_pri));
 449
 450                 Jim_ListAppendElement(interp, threads, threadObj);
 451         }
 452         Jim_SetResult(interp, threads);
 453
 454         return JIM_OK;
 455 }
 456
 457 static int zylinjtag_Jim_Command_log(Jim_Interp *interp, int argc,
 458                 Jim_Obj * const *argv)
 459 {
 460         Jim_Obj *tclOutput = Jim_NewStringObj(interp, "", 0);
 461
 462         if (logCount >= logSize)
 463         {
 464                 Jim_AppendString(httpstate.jim_interp, tclOutput, logBuffer + logCount
 465                                 % logSize, logSize - logCount % logSize);
 466         }
 467         Jim_AppendString(httpstate.jim_interp, tclOutput, logBuffer, writePtr);
 468
 469         Jim_SetResult(interp, tclOutput);
 470         return JIM_OK;
 471 }
 472
 473 static int zylinjtag_Jim_Command_reboot(Jim_Interp *interp, int argc,
 474                 Jim_Obj * const *argv)
 475 {
 476         reboot();
 477         return JIM_OK;
 478 }
 479
 480 static void zylinjtag_startNetwork(void)
 481 {
 482         // Bring TCP/IP up immediately before we're ready to accept commands.
 483         //
 484         // That is as soon as a PING responds, we're accepting telnet sessions.
 485 #if defined(CYGPKG_NET_FREEBSD_STACK)
 486         phi_init_all_network_interfaces();
 487 #else
 488         lwip_init();
 489 #endif
 490         if (!eth0_up)
 491         {
 492                 diag_printf("Network not up and running\n");
 493                 exit(-1);
 494         }
 495
 496         /* very first thing we want is a reboot capability */
 497         reboot_port();
 498
 499 #if defined(CYGPKG_NET_FREEBSD_STACK)
 500         /*start TFTP*/
 501         tftpd_start(69, &fileops);
 502 #endif
 503
 504         cyg_httpd_init_tcl_interpreter();
 505
 506         Jim_CreateCommand(httpstate.jim_interp, "log", zylinjtag_Jim_Command_log,
 507                         NULL, NULL);
 508         Jim_CreateCommand(httpstate.jim_interp, "zy1000_reboot",
 509                         zylinjtag_Jim_Command_reboot, NULL, NULL);
 510         Jim_CreateCommand(httpstate.jim_interp, "threads",
 511                         zylinjtag_Jim_Command_threads, NULL, NULL);
 512         Jim_CreateCommand(httpstate.jim_interp, "format_jffs2",
 513                         zylinjtag_Jim_Command_format_jffs2, NULL, NULL);
 514
 515         cyg_httpd_start();
 516
 517         webRunning = true;
 518
 519         diag_printf("Web server running\n");
 520
 521         int s;
 522         struct ifreq ifr;
 523         s = socket(AF_INET, SOCK_DGRAM, 0);
 524         if (s >= 0)
 525         {
 526                 strcpy(ifr.ifr_name, "eth0");
 527                 int res;
 528                 res = ioctl(s, SIOCGIFHWADDR, &ifr);
 529                 close(s);
 530
 531                 if (res < 0)
 532                 {
 533                         diag_printf("Can't obtain MAC address\n");
 534                         reboot();
 535                 }
 536         }
 537
 538         sprintf(hwaddr, "%02x:%02x:%02x:%02x:%02x:%02x",
 539                         (int) ((unsigned char *) &ifr.ifr_hwaddr.sa_data)[0],
 540                         (int) ((unsigned char *) &ifr.ifr_hwaddr.sa_data)[1],
 541                         (int) ((unsigned char *) &ifr.ifr_hwaddr.sa_data)[2],
 542                         (int) ((unsigned char *) &ifr.ifr_hwaddr.sa_data)[3],
 543                         (int) ((unsigned char *) &ifr.ifr_hwaddr.sa_data)[4],
 544                         (int) ((unsigned char *) &ifr.ifr_hwaddr.sa_data)[5]);
 545
 546         discover_message
 547                         = alloc_printf("ZY1000 Zylin JTAG debugger MAC %s", hwaddr);
 548
 549         discover_launch();
 550 }
 551
 552 static void print_exception_handler(cyg_addrword_t data, cyg_code_t exception,
 553                 cyg_addrword_t info)
 554 {
 555         writeLog = false;
 556         serialLog = true;
 557         char *infoStr = "unknown";
 558         switch (exception)
 559         {
 560 #ifdef CYGNUM_HAL_VECTOR_UNDEF_INSTRUCTION
 561         case CYGNUM_HAL_VECTOR_UNDEF_INSTRUCTION:
 562         infoStr = "undefined instruction";
 563         break;
 564         case CYGNUM_HAL_VECTOR_SOFTWARE_INTERRUPT:
 565         infoStr = "software interrupt";
 566         break;
 567         case CYGNUM_HAL_VECTOR_ABORT_PREFETCH:
 568         infoStr = "abort prefetch";
 569         break;
 570         case CYGNUM_HAL_VECTOR_ABORT_DATA:
 571         infoStr = "abort data";
 572         break;
 573 #endif
 574         default:
 575                 break;
 576         }
 577
 578         diag_printf("Exception: %08x(%s) %08x\n", exception, infoStr, info);
 579
 580         diag_printf("Dumping log\n---\n");
 581         if (logCount >= logSize)
 582         {
 583                 diag_write(logBuffer + logCount % logSize, logSize - logCount % logSize);
 584         }
 585         diag_write(logBuffer, writePtr);
 586
 587         diag_printf("---\nLogdump complete.\n");
 588         diag_printf("Exception: %08x(%s) %08x\n", exception, infoStr, info);
 589         diag_printf("\n---\nRebooting\n");
 590         HAL_PLATFORM_RESET();
 591
 592 }
 593
 594 #ifdef CYGNUM_HAL_VECTOR_UNDEF_INSTRUCTION
 595 static void setHandler(cyg_code_t exception)
 596 {
 597         cyg_exception_handler_t *old_handler;
 598         cyg_addrword_t old_data;
 599
 600         cyg_exception_set_handler(exception, print_exception_handler, 0,
 601                         &old_handler, &old_data);
 602 }
 603 #endif
 604
 605 static cyg_thread zylinjtag_uart_thread_object;
 606 static cyg_handle_t zylinjtag_uart_thread_handle;
 607 static char uart_stack[4096];
 608
 609 static char forwardBuffer[1024]; // NB! must be smaller than a TCP/IP packet!!!!!
 610 static char backwardBuffer[1024];
 611
 612 void setNoDelay(int session, int flag)
 613 {
 614 #if 1
 615         // This decreases latency dramatically for e.g. GDB load which
 616         // does not have a sliding window protocol
 617         //
 618         // Can cause *lots* of TCP/IP packets to be sent and it would have
 619         // to be enabled/disabled on the fly to avoid the CPU being
 620         // overloaded...
 621         setsockopt(session, /* socket affected */
 622         IPPROTO_TCP, /* set option at TCP level */
 623         TCP_NODELAY, /* name of option */
 624         (char *) &flag, /* the cast is historical
 625          cruft */
 626         sizeof(int)); /* length of option value */
 627 #endif
 628 }
 629
 630 #define TEST_TCPIP() 0
 631
 632 #if TEST_TCPIP
 633 struct
 634 {
 635         int req;
 636         int actual;
 637         int req2;
 638         int actual2;
 639 } tcpipSent[512 * 1024];
 640 int cur;
 641 #endif
 642
 643 static void zylinjtag_uart(cyg_addrword_t data)
 644 {
 645         int so_reuseaddr_option = 1;
 646
 647         int fd;
 648         if ((fd = socket(AF_INET, SOCK_STREAM, 0)) == -1)
 649         {
 650                 LOG_ERROR("error creating socket: %s", strerror(errno));
 651                 exit(-1);
 652         }
 653
 654         setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (void*) &so_reuseaddr_option,
 655                         sizeof(int));
 656
 657         struct sockaddr_in sin;
 658         unsigned int address_size;
 659         address_size = sizeof(sin);
 660         memset(&sin, 0, sizeof(sin));
 661         sin.sin_family = AF_INET;
 662         sin.sin_addr.s_addr = INADDR_ANY;
 663         sin.sin_port = htons(5555);
 664
 665         if (bind(fd, (struct sockaddr *) &sin, sizeof(sin)) == -1)
 666         {
 667                 LOG_ERROR("couldn't bind to socket: %s", strerror(errno));
 668                 exit(-1);
 669         }
 670
 671         if (listen(fd, 1) == -1)
 672         {
 673                 LOG_ERROR("couldn't listen on socket: %s", strerror(errno));
 674                 exit(-1);
 675         }
 676         //      socket_nonblock(fd);
 677
 678
 679         for (;;)
 680         {
 681                 int session = accept(fd, (struct sockaddr *) &sin, &address_size);
 682                 if (session < 0)
 683                 {
 684                         continue;
 685                 }
 686
 687                 setNoDelay(session, 1);
 688                 int oldopts = fcntl(session, F_GETFL, 0);
 689                 fcntl(session, F_SETFL, oldopts | O_NONBLOCK); //
 690
 691                 int serHandle = open(ZY1000_SER_DEV, O_RDWR | O_NONBLOCK);
 692                 if (serHandle < 0)
 693                 {
 694                         close(session);
 695                         continue;
 696                 }
 697
 698 #ifdef CYGPKG_PROFILE_GPROF
 699                 start_profile();
 700 #endif
 701                 size_t actual = 0;
 702                 size_t actual2 = 0;
 703                 size_t pos, pos2;
 704                 pos = 0;
 705                 pos2 = 0;
 706 #if TEST_TCPIP
 707                 cur = 0;
 708 #endif
 709                 for (;;)
 710                 {
 711                         fd_set write_fds;
 712                         fd_set read_fds;
 713                         FD_ZERO(&write_fds);
 714                         FD_ZERO(&read_fds);
 715                         int fd_max = -1;
 716                         FD_SET(session, &read_fds);
 717                         fd_max = session;
 718                         FD_SET(serHandle, &read_fds);
 719                         if (serHandle > fd_max)
 720                         {
 721                                 fd_max = serHandle;
 722                         }
 723                         /* Wait... */
 724
 725                         cyg_thread_delay(5); // 50ms fixed delay to wait for data to be sent/received
 726                         if ((actual == 0) && (actual2 == 0))
 727                         {
 728                                 int retval = select(fd_max + 1, &read_fds, NULL, NULL, NULL);
 729                                 if (retval <= 0)
 730                                 {
 731                                         break;
 732                                 }
 733                         }
 734
 735                         if (actual2 <= 0)
 736                         {
 737                                 memset(backwardBuffer, 's', sizeof(backwardBuffer));
 738                                 int t;
 739                                 t = read(serHandle, backwardBuffer,
 740                                                 sizeof(backwardBuffer));
 741                                 actual2 = t;
 742                                 if (t < 0)
 743                                 {
 744                                         if (errno != EAGAIN)
 745                                         {
 746                                                 goto closeSession;
 747                                         }
 748                                         actual2 = 0;
 749                                 }
 750                                 pos2 = 0;
 751                         }
 752
 753                         size_t y = 0;
 754                         if (actual2 > 0)
 755                         {
 756                                 int written = write(session, backwardBuffer + pos2, actual2);
 757                                 if (written <= 0)
 758                                         goto closeSession;
 759                                 actual2 -= written;
 760                                 pos2 += written;
 761                                 y = written;
 762                         }
 763
 764                         if (FD_ISSET(session, &read_fds)
 765                                         && (sizeof(forwardBuffer) > actual))
 766                         {
 767                                 // NB! Here it is important that we empty the TCP/IP read buffer
 768                                 // to make transmission tick right
 769                                 memmove(forwardBuffer, forwardBuffer + pos, actual);
 770                                 pos = 0;
 771                                 int t;
 772                                 // this will block if there is no data at all
 773                                 t = read_socket(session, forwardBuffer + actual,
 774                                                 sizeof(forwardBuffer) - actual);
 775                                 if (t <= 0)
 776                                 {
 777                                         goto closeSession;
 778                                 }
 779                                 actual += t;
 780                         }
 781
 782                         int y2 = 0;
 783                         if (actual > 0)
 784                         {
 785                                 /* Do not put things into the serial buffer if it has something to send
 786                                  * as that can cause a single byte to be sent at the time.
 787                                  *
 788                                  *
 789                                  */
 790                                 int written = write(serHandle, forwardBuffer + pos, actual);
 791                                 if (written < 0)
 792                                 {
 793                                         if (errno != EAGAIN)
 794                                         {
 795                                                 goto closeSession;
 796                                         }
 797                                         // The serial buffer is full
 798                                         written = 0;
 799                                 }
 800                                 else
 801                                 {
 802                                         actual -= written;
 803                                         pos += written;
 804                                 }
 805                                 y2 = written;
 806                         }
 807 #if TEST_TCPIP
 808                         if (cur < 1024)
 809                         {
 810                                 tcpipSent[cur].req = x;
 811                                 tcpipSent[cur].actual = y;
 812                                 tcpipSent[cur].req2 = x2;
 813                                 tcpipSent[cur].actual2 = y2;
 814                                 cur++;
 815                         }
 816 #endif
 817                 }
 818                 closeSession: close(session);
 819                 close(serHandle);
 820
 821 #if TEST_TCPIP
 822                 int i;
 823                 for (i = 0; i < 1024; i++)
 824                 {
 825                         diag_printf("%d %d %d %d\n", tcpipSent[i].req, tcpipSent[i].actual,
 826                                         tcpipSent[i].req2, tcpipSent[i].actual2);
 827
 828                 }
 829 #endif
 830         }
 831         close(fd);
 832
 833 }
 834
 835 void startUart(void)
 836 {
 837         cyg_thread_create(1, zylinjtag_uart, (cyg_addrword_t) 0, "uart thread",
 838                         (void *) uart_stack, sizeof(uart_stack),
 839                         &zylinjtag_uart_thread_handle, &zylinjtag_uart_thread_object);
 840         cyg_thread_set_priority(zylinjtag_uart_thread_handle, 1); // low priority as it sits in a busy loop
 841         cyg_thread_resume(zylinjtag_uart_thread_handle);
 842 }
 843
 844 static int zylinjtag_Jim_Command_uart(Jim_Interp *interp, int argc,
 845                 Jim_Obj * const *argv)
 846 {
 847         static int current_baud = 38400;
 848         if (argc == 1)
 849         {
 850                 command_print(cmd_ctx, "%d", current_baud);
 851                 return JIM_OK;
 852         }
 853         else if (argc != 2)
 854         {
 855                 return JIM_ERR;
 856         }
 857
 858         long new_baudrate;
 859         if (Jim_GetLong(interp, argv[1], &new_baudrate) != JIM_OK)
 860                 return JIM_ERR;
 861
 862         current_baud = new_baudrate;
 863
 864         int baud;
 865         switch (current_baud)
 866         {
 867         case 9600:
 868                 baud = CYGNUM_SERIAL_BAUD_9600;
 869                 break;
 870         case 19200:
 871                 baud = CYGNUM_SERIAL_BAUD_19200;
 872                 break;
 873         case 38400:
 874                 baud = CYGNUM_SERIAL_BAUD_38400;
 875                 break;
 876         case 57600:
 877                 baud = CYGNUM_SERIAL_BAUD_57600;
 878                 break;
 879         case 115200:
 880                 baud = CYGNUM_SERIAL_BAUD_115200;
 881                 break;
 882         case 230400:
 883                 baud = CYGNUM_SERIAL_BAUD_230400;
 884                 break;
 885         default:
 886                 command_print(cmd_ctx, "unsupported baudrate");
 887                 return ERROR_INVALID_ARGUMENTS;
 888         }
 889
 890         cyg_serial_info_t buf;
 891         cyg_uint32 len = 1;
 892         //get existing serial configuration
 893         len = sizeof(cyg_serial_info_t);
 894         int err;
 895         cyg_io_handle_t serial_handle;
 896
 897         err = cyg_io_lookup(ZY1000_SER_DEV, &serial_handle);
 898         if (err != ENOERR)
 899         {
 900                 LOG_ERROR("Could not open serial port\n");
 901                 return JIM_ERR;
 902         }
 903
 904         err = cyg_io_get_config(serial_handle,
 905                         CYG_IO_GET_CONFIG_SERIAL_OUTPUT_DRAIN, &buf, &len);
 906         err = cyg_io_get_config(serial_handle, CYG_IO_GET_CONFIG_SERIAL_INFO, &buf,
 907                         &len);
 908         if (err != ENOERR)
 909         {
 910                 LOG_ERROR("Failed to get serial port settings %d", err);
 911                 return JIM_ERR;
 912         }
 913         buf.baud = baud;
 914
 915         err = cyg_io_set_config(serial_handle, CYG_IO_SET_CONFIG_SERIAL_INFO, &buf,
 916                         &len);
 917         if (err != ENOERR)
 918         {
 919                 LOG_ERROR("Failed to set serial port settings %d", err);
 920                 return JIM_ERR;
 921         }
 922
 923         return JIM_OK;
 924 }
 925
 926 bool logAllToSerial = false;
 927
 928
 929 int boolParam(char *var);
 930
 931
 932 static const char *zylin_config_dir="/config/settings";
 933
 934 static int add_default_dirs(void)
 935 {
 936         add_script_search_dir(zylin_config_dir);
 937         add_script_search_dir("/rom/lib/openocd");
 938         add_script_search_dir("/rom");
 939         return ERROR_OK;
 940 }
 941
 942 int main(int argc, char *argv[])
 943 {
 944         /* ramblockdevice will be the same address every time. The deflate app uses a buffer 16mBytes out, so we
 945          * need to allocate towards the end of the heap.  */
 946
 947 #ifdef CYGNUM_HAL_VECTOR_UNDEF_INSTRUCTION
 948         setHandler(CYGNUM_HAL_VECTOR_UNDEF_INSTRUCTION);
 949         setHandler(CYGNUM_HAL_VECTOR_ABORT_PREFETCH);
 950         setHandler(CYGNUM_HAL_VECTOR_ABORT_DATA);
 951 #endif
 952
 953         int err;
 954
 955         atexit(keep_webserver);
 956
 957         diag_init_putc(_zylinjtag_diag_write_char);
 958         // We want this in the log.
 959 #ifdef CYGPKG_HAL_NIOS2
 960         diag_printf("Zylin ZY1000 PCB revc.\n");
 961 #else
 962         diag_printf("Zylin ZY1000 PCB revb.\n");
 963 #endif
 964
 965         err = mount("", "/ram", "ramfs");
 966         if (err < 0)
 967         {
 968                 diag_printf("unable to mount ramfs\n");
 969         }
 970         chdir("/ram");
 971
 972         char address[16];
 973         sprintf(address, "%p", &filedata[0]);
 974         err = mount(address, "/rom", "romfs");
 975         if (err < 0)
 976         {
 977                 diag_printf("unable to mount /rom\n");
 978         }
 979
 980         err = mount("", "/log", "logfs");
 981         if (err < 0)
 982         {
 983                 diag_printf("unable to mount logfs\n");
 984         }
 985
 986         err = mount("", "/tftp", "tftpfs");
 987         if (err < 0)
 988         {
 989                 diag_printf("unable to mount logfs\n");
 990         }
 991
 992         log = fopen("/log/log", "w");
 993         if (log == NULL)
 994         {
 995                 diag_printf("Could not open log file /ram/log\n");
 996                 exit(-1);
 997         }
 998
 999
1000         copydir("/rom", "/ram/cgi");
1001
1002 #ifdef CYGPKG_HAL_NIOS2
1003         cyg_flashaddr_t err_address;
1004 #define UNCACHED_EXT_FLASH_BASE (0x80000000 + EXT_FLASH_BASE)
1005         /* The revc flash is locked upon reset, unlock it */
1006 #ifdef CYGHWR_IO_FLASH_BLOCK_LOCKING
1007         if ((err = flash_unlock((void *) UNCACHED_EXT_FLASH_BASE, EXT_FLASH_SPAN,
1008                         (void **) &err_address)) != 0)
1009         {
1010                 diag_printf("Error: could not unlock flash\n");
1011         }
1012 #endif
1013 #endif
1014
1015
1016         err = mount("/dev/flash1", "/config", "jffs2");
1017         if (err < 0)
1018         {
1019                 diag_printf("unable to mount jffs2, falling back to ram disk..\n");
1020                 err = mount("", "/config", "ramfs");
1021                 if (err < 0)
1022                 {
1023                         diag_printf("unable to mount /config as ramdisk.\n");
1024                         reboot();
1025                 }
1026         }
1027         else
1028         {
1029                 /* are we using a ram disk instead of a flash disk? This is used
1030                  * for ZY1000 live demo...
1031                  *
1032                  * copy over flash disk to ram block device
1033                  */
1034                 if (boolParam("ramdisk"))
1035                 {
1036                         diag_printf("Unmounting /config from flash and using ram instead\n");
1037                         err = umount("/config");
1038                         if (err < 0)
1039                         {
1040                                 diag_printf("unable to unmount jffs\n");
1041                                 reboot();
1042                         }
1043
1044                         err = mount("/dev/flash1", "/config2", "jffs2");
1045                         if (err < 0)
1046                         {
1047                                 diag_printf("unable to mount jffs\n");
1048                                 reboot();
1049                         }
1050
1051                         err = mount("", "/config", "ramfs");
1052                         if (err < 0)
1053                         {
1054                                 diag_printf("unable to mount ram block device\n");
1055                                 reboot();
1056                         }
1057
1058                         //              copydir("/config2", "/config");
1059                         copyfile("/config2/ip", "/config/ip");
1060                         copydir("/config2/settings", "/config/settings");
1061
1062                         umount("/config2");
1063                 }
1064         }
1065
1066         mkdir(zylin_config_dir, 0777);
1067         char *dirname = alloc_printf("%s/target", zylin_config_dir);
1068         mkdir(dirname, 0777);
1069         free(dirname);
1070         dirname = alloc_printf("%s/board", zylin_config_dir);
1071         mkdir(dirname, 0777);
1072         free(dirname);
1073         dirname = alloc_printf("%s/event", zylin_config_dir);
1074         mkdir(dirname, 0777);
1075         free(dirname);
1076
1077         logAllToSerial = boolParam("logserial");
1078
1079         // We need the network & web server in case there is something wrong with
1080         // the config files that invoke exit()
1081         zylinjtag_startNetwork();
1082
1083         /* we're going to access the jim interpreter from here on... */
1084         openocd_sleep_postlude();
1085         startUart();
1086
1087         add_default_dirs();
1088
1089         /* initialize commandline interface */
1090         struct command_context * cmd_ctx;
1091         struct command_context *setup_command_handler(Jim_Interp *interp);
1092         cmd_ctx = setup_command_handler(httpstate.jim_interp);
1093         command_set_output_handler(cmd_ctx, configuration_output_handler, NULL);
1094         command_context_mode(cmd_ctx, COMMAND_CONFIG);
1095
1096         if (ioutil_init(cmd_ctx) != ERROR_OK)
1097                 return EXIT_FAILURE;
1098
1099 #ifdef CYGPKG_PROFILE_GPROF
1100         Jim_CreateCommand(httpstate.jim_interp, "zy1000_profile", zylinjtag_Jim_Command_profile,
1101                         NULL, NULL);
1102 #endif
1103
1104         Jim_CreateCommand(httpstate.jim_interp, "zy1000_uart", zylinjtag_Jim_Command_uart, NULL, NULL);
1105
1106
1107         log_init();
1108
1109         set_log_output(cmd_ctx, log);
1110
1111         LOG_DEBUG("log init complete");
1112
1113         //      diag_printf("Executing config files\n");
1114
1115         if (logAllToSerial)
1116         {
1117                 diag_printf(
1118                                  "%s/logserial = 1 => sending log output to serial port using \"debug_level 3\" as default.\n", zylin_config_dir);
1119                 command_run_line(cmd_ctx, "debug_level 3");
1120         }
1121
1122         command_run_linef(cmd_ctx, "script /rom/openocd.cfg");
1123
1124         int ret;
1125         ret = server_init(cmd_ctx);
1126         if (ERROR_OK != ret)
1127                 return EXIT_FAILURE;
1128
1129         /* we MUST always run the init command as it will launch telnet sessions */
1130         command_run_line(cmd_ctx, "init");
1131
1132         // FIX!!!  Yuk!
1133         // diag_printf() is really invoked from many more places than we trust it
1134         // not to cause instabilities(e.g. invoking fputc() from an interrupt is *BAD*).
1135         //
1136         // Disabling it here is safe and gives us enough logged debug output for now. Crossing
1137         // fingers that it doesn't cause any crashes.
1138         diag_printf("Init complete, GDB & telnet servers launched.\n");
1139         command_set_output_handler(cmd_ctx,
1140                         zy1000_configuration_output_handler_log, NULL);
1141         if (!logAllToSerial)
1142         {
1143                 serialLog = false;
1144         }
1145
1146         /* handle network connections */
1147         server_loop(cmd_ctx);
1148         openocd_sleep_prelude();
1149
1150         /* shut server down */
1151         server_quit();
1152
1153         /* free commandline interface */
1154         command_done(cmd_ctx);
1155         umount("/config");
1156
1157         exit(0);
1158         for (;;)
1159                 ;
1160 }
1161
1162 cyg_int32 cyg_httpd_exec_cgi_tcl(char *file_name);
1163 cyg_int32 homeForm(CYG_HTTPD_STATE *p)
1164 {
1165         cyg_httpd_exec_cgi_tcl("/ram/cgi/index.tcl");
1166         return 0;
1167 }
1168
1169 CYG_HTTPD_HANDLER_TABLE_ENTRY(root_label, "/", homeForm);
1170
1171 CYG_HTTPD_MIME_TABLE_ENTRY(text_mime_label, "text", "text/plain");
1172 CYG_HTTPD_MIME_TABLE_ENTRY(bin_mime_label, "bin", "application/octet-stream");
1173
1174 #include <pkgconf/system.h>
1175 #include <pkgconf/hal.h>
1176 #include <pkgconf/kernel.h>
1177 #include <pkgconf/io_fileio.h>
1178 #include <pkgconf/fs_rom.h>
1179
1180 #include <cyg/kernel/ktypes.h>         // base kernel types
1181 #include <cyg/infra/cyg_trac.h>        // tracing macros
1182 #include <cyg/infra/cyg_ass.h>         // assertion macros
1183 #include <cyg/fileio/fileio.h>
1184 #include <cyg/kernel/kapi.h>
1185 #include <cyg/infra/diag.h>
1186
1187 //==========================================================================
1188 // Eventually we want to eXecute In Place from the ROM in a protected
1189 // environment, so we'll need executables to be aligned to a boundary
1190 // suitable for MMU protection. A suitable boundary would be the 4k
1191 // boundary in all the CPU architectures I am currently aware of.
1192
1193 // Forward definitions
1194
1195 // Filesystem operations
1196 static int tftpfs_mount(cyg_fstab_entry *fste, cyg_mtab_entry *mte);
1197 static int tftpfs_umount(cyg_mtab_entry *mte);
1198 static int tftpfs_open(cyg_mtab_entry *mte, cyg_dir dir, const char *name,
1199                 int mode, cyg_file *fte);
1200 static int tftpfs_fo_read(struct CYG_FILE_TAG *fp, struct CYG_UIO_TAG *uio);
1201 static int tftpfs_fo_write(struct CYG_FILE_TAG *fp, struct CYG_UIO_TAG *uio);
1202
1203 // File operations
1204 static int tftpfs_fo_fsync(struct CYG_FILE_TAG *fp, int mode);
1205 static int tftpfs_fo_close(struct CYG_FILE_TAG *fp);
1206 static int tftpfs_fo_lseek(struct CYG_FILE_TAG *fp, off_t *apos, int whence);
1207
1208 //==========================================================================
1209 // Filesystem table entries
1210
1211 // -------------------------------------------------------------------------
1212 // Fstab entry.
1213 // This defines the entry in the filesystem table.
1214 // For simplicity we use _FILESYSTEM synchronization for all accesses since
1215 // we should never block in any filesystem operations.
1216 #if 1
1217 FSTAB_ENTRY(tftpfs_fste, "tftpfs", 0,
1218                 CYG_SYNCMODE_NONE,
1219                 tftpfs_mount,
1220                 tftpfs_umount,
1221                 tftpfs_open,
1222                 (cyg_fsop_unlink *)cyg_fileio_erofs,
1223                 (cyg_fsop_mkdir *)cyg_fileio_erofs,
1224                 (cyg_fsop_rmdir *)cyg_fileio_erofs,
1225                 (cyg_fsop_rename *)cyg_fileio_erofs,
1226                 (cyg_fsop_link *)cyg_fileio_erofs,
1227                 (cyg_fsop_opendir *)cyg_fileio_erofs,
1228                 (cyg_fsop_chdir *)cyg_fileio_erofs,
1229                 (cyg_fsop_stat *)cyg_fileio_erofs,
1230                 (cyg_fsop_getinfo *)cyg_fileio_erofs,
1231                 (cyg_fsop_setinfo *)cyg_fileio_erofs);
1232 #endif
1233
1234 // -------------------------------------------------------------------------
1235 // mtab entry.
1236 // This defines a single ROMFS loaded into ROM at the configured address
1237 //
1238 // MTAB_ENTRY(rom_mte,  // structure name
1239 //              "/rom",         // mount point
1240 //              "romfs",        // FIlesystem type
1241 //              "",             // hardware device
1242 //  (CYG_ADDRWORD) CYGNUM_FS_ROM_BASE_ADDRESS   // Address in ROM
1243 //);
1244
1245
1246 // -------------------------------------------------------------------------
1247 // File operations.
1248 // This set of file operations are used for normal open files.
1249
1250 static cyg_fileops tftpfs_fileops =
1251 { tftpfs_fo_read, tftpfs_fo_write, tftpfs_fo_lseek,
1252                 (cyg_fileop_ioctl *) cyg_fileio_erofs, cyg_fileio_seltrue,
1253                 tftpfs_fo_fsync, tftpfs_fo_close,
1254                 (cyg_fileop_fstat *) cyg_fileio_erofs,
1255                 (cyg_fileop_getinfo *) cyg_fileio_erofs,
1256                 (cyg_fileop_setinfo *) cyg_fileio_erofs, };
1257
1258 // -------------------------------------------------------------------------
1259 // tftpfs_mount()
1260 // Process a mount request. This mainly finds root for the
1261 // filesystem.
1262
1263 static int tftpfs_mount(cyg_fstab_entry *fste, cyg_mtab_entry *mte)
1264 {
1265         return ENOERR;
1266 }
1267
1268 static int tftpfs_umount(cyg_mtab_entry *mte)
1269 {
1270         return ENOERR;
1271 }
1272
1273 struct Tftp
1274 {
1275         int write;
1276         int readFile;
1277         cyg_uint8 *mem;
1278         int actual;
1279         char *server;
1280         char *file;
1281 };
1282
1283 static void freeTftp(struct Tftp *t)
1284 {
1285         if (t == NULL)
1286                 return;
1287         if (t->mem)
1288                 free(t->mem);
1289         if (t->server)
1290                 free(t->server);
1291         if (t->file)
1292                 free(t->file);
1293         free(t);
1294 }
1295
1296 static const int tftpMaxSize = 8192 * 1024;
1297 static int tftpfs_open(cyg_mtab_entry *mte, cyg_dir dir, const char *name,
1298                 int mode, cyg_file *file)
1299 {
1300         struct Tftp *tftp;
1301         tftp = malloc(sizeof(struct Tftp));
1302         if (tftp == NULL)
1303                 return EMFILE;
1304         memset(tftp, 0, sizeof(struct Tftp));
1305
1306         file->f_flag |= mode & CYG_FILE_MODE_MASK;
1307         file->f_type = CYG_FILE_TYPE_FILE;
1308         file->f_ops = &tftpfs_fileops;
1309         file->f_offset = 0;
1310         file->f_data = 0;
1311         file->f_xops = 0;
1312
1313         tftp->mem = malloc(tftpMaxSize);
1314         if (tftp->mem == NULL)
1315         {
1316                 freeTftp(tftp);
1317                 return EMFILE;
1318         }
1319
1320         char *server = strchr(name, '/');
1321         if (server == NULL)
1322         {
1323                 freeTftp(tftp);
1324                 return EMFILE;
1325         }
1326
1327         tftp->server = malloc(server - name + 1);
1328         if (tftp->server == NULL)
1329         {
1330                 freeTftp(tftp);
1331                 return EMFILE;
1332         }
1333         strncpy(tftp->server, name, server - name);
1334         tftp->server[server - name] = 0;
1335
1336         tftp->file = strdup(server + 1);
1337         if (tftp->file == NULL)
1338         {
1339                 freeTftp(tftp);
1340                 return EMFILE;
1341         }
1342
1343         file->f_data = (CYG_ADDRWORD) tftp;
1344
1345         return ENOERR;
1346 }
1347
1348 static int fetchTftp(struct Tftp *tftp)
1349 {
1350         if (!tftp->readFile)
1351         {
1352                 int err;
1353                 tftp->actual = tftp_client_get(tftp->file, tftp->server, 0, tftp->mem,
1354                                 tftpMaxSize, TFTP_OCTET, &err);
1355
1356                 if (tftp->actual < 0)
1357                 {
1358                         return EMFILE;
1359                 }
1360                 tftp->readFile = 1;
1361         }
1362         return ENOERR;
1363 }
1364
1365 // -------------------------------------------------------------------------
1366 // tftpfs_fo_write()
1367 // Read data from file.
1368
1369 static int tftpfs_fo_read(struct CYG_FILE_TAG *fp, struct CYG_UIO_TAG *uio)
1370 {
1371         struct Tftp *tftp = (struct Tftp *) fp->f_data;
1372
1373         if (fetchTftp(tftp) != ENOERR)
1374                 return EMFILE;
1375
1376         int i;
1377         off_t pos = fp->f_offset;
1378         int resid = 0;
1379         for (i = 0; i < uio->uio_iovcnt; i++)
1380         {
1381                 cyg_iovec *iov = &uio->uio_iov[i];
1382                 char *buf = (char *) iov->iov_base;
1383                 off_t len = iov->iov_len;
1384
1385                 if (len + pos > tftp->actual)
1386                 {
1387                         len = tftp->actual - pos;
1388                 }
1389                 resid += iov->iov_len - len;
1390
1391                 memcpy(buf, tftp->mem + pos, len);
1392                 pos += len;
1393
1394         }
1395         uio->uio_resid = resid;
1396         fp->f_offset = pos;
1397
1398         return ENOERR;
1399 }
1400
1401 static int tftpfs_fo_write(struct CYG_FILE_TAG *fp, struct CYG_UIO_TAG *uio)
1402 {
1403         struct Tftp *tftp = (struct Tftp *) fp->f_data;
1404
1405         int i;
1406         off_t pos = fp->f_offset;
1407         int resid = 0;
1408         for (i = 0; i < uio->uio_iovcnt; i++)
1409         {
1410                 cyg_iovec *iov = &uio->uio_iov[i];
1411                 char *buf = (char *) iov->iov_base;
1412                 off_t len = iov->iov_len;
1413
1414                 if (len + pos > tftpMaxSize)
1415                 {
1416                         len = tftpMaxSize - pos;
1417                 }
1418                 resid += iov->iov_len - len;
1419
1420                 memcpy(tftp->mem + pos, buf, len);
1421                 pos += len;
1422
1423         }
1424         uio->uio_resid = resid;
1425         fp->f_offset = pos;
1426
1427         tftp->write = 1;
1428
1429         return ENOERR;
1430 }
1431
1432 static int tftpfs_fo_fsync(struct CYG_FILE_TAG *fp, int mode)
1433 {
1434         int error = ENOERR;
1435         return error;
1436 }
1437
1438 // -------------------------------------------------------------------------
1439 // romfs_fo_close()
1440 // Close a file. We just clear out the data pointer.
1441
1442 static int tftpfs_fo_close(struct CYG_FILE_TAG *fp)
1443 {
1444         struct Tftp *tftp = (struct Tftp *) fp->f_data;
1445         int error = ENOERR;
1446
1447         if (tftp->write)
1448         {
1449                 tftp_client_put(tftp->file, tftp->server, 0, tftp->mem, fp->f_offset,
1450                                 TFTP_OCTET, &error);
1451         }
1452
1453         freeTftp(tftp);
1454         fp->f_data = 0;
1455         return error;
1456 }
1457
1458 // -------------------------------------------------------------------------
1459 // romfs_fo_lseek()
1460 // Seek to a new file position.
1461
1462 static int tftpfs_fo_lseek(struct CYG_FILE_TAG *fp, off_t *apos, int whence)
1463 {
1464         struct Tftp *tftp = (struct Tftp *) fp->f_data;
1465         off_t pos = *apos;
1466
1467         if (fetchTftp(tftp) != ENOERR)
1468                 return EMFILE;
1469
1470         switch (whence)
1471         {
1472         case SEEK_SET:
1473                 // Pos is already where we want to be.
1474                 break;
1475
1476         case SEEK_CUR:
1477                 // Add pos to current offset.
1478                 pos += fp->f_offset;
1479                 break;
1480
1481         case SEEK_END:
1482                 // Add pos to file size.
1483                 pos += tftp->actual;
1484                 break;
1485
1486         default:
1487                 return EINVAL;
1488         }
1489
1490         // Check that pos is still within current file size, or at the
1491         // very end.
1492         if (pos < 0 || pos > tftp->actual)
1493                 return EINVAL;
1494
1495         // All OK, set fp offset and return new position.
1496         *apos = fp->f_offset = pos;
1497
1498         return ENOERR;
1499 }
1500
1501 void usleep(int us)
1502 {
1503         if (us > 10000)
1504                 cyg_thread_delay(us / 10000 + 1);
1505         else
1506                 HAL_DELAY_US(us);
1507 }
1508
1509 // Chunked version.
1510 cyg_int32 show_log_entry(CYG_HTTPD_STATE *phttpstate)
1511 {
1512         cyg_httpd_start_chunked("text");
1513         if (logCount >= logSize)
1514         {
1515                 cyg_httpd_write_chunked(logBuffer + logCount % logSize, logSize
1516                                 - logCount % logSize);
1517         }
1518         cyg_httpd_write_chunked(logBuffer, writePtr);
1519         cyg_httpd_end_chunked();
1520         return -1;
1521 }
1522
1523 CYG_HTTPD_HANDLER_TABLE_ENTRY(show_log, "/ram/log", show_log_entry);
1524
1525 // Filesystem operations
1526 static int logfs_mount(cyg_fstab_entry *fste, cyg_mtab_entry *mte);
1527 static int logfs_umount(cyg_mtab_entry *mte);
1528 static int logfs_open(cyg_mtab_entry *mte, cyg_dir dir, const char *name,
1529                 int mode, cyg_file *fte);
1530 static int logfs_fo_write(struct CYG_FILE_TAG *fp, struct CYG_UIO_TAG *uio);
1531
1532 // File operations
1533 static int logfs_fo_fsync(struct CYG_FILE_TAG *fp, int mode);
1534 static int logfs_fo_close(struct CYG_FILE_TAG *fp);
1535
1536 #include <cyg/io/devtab.h>
1537
1538 //==========================================================================
1539 // Filesystem table entries
1540
1541 // -------------------------------------------------------------------------
1542 // Fstab entry.
1543 // This defines the entry in the filesystem table.
1544 // For simplicity we use _FILESYSTEM synchronization for all accesses since
1545 // we should never block in any filesystem operations.
1546 FSTAB_ENTRY(logfs_fste, "logfs", 0,
1547                 CYG_SYNCMODE_FILE_FILESYSTEM | CYG_SYNCMODE_IO_FILESYSTEM,
1548                 logfs_mount,
1549                 logfs_umount,
1550                 logfs_open,
1551                 (cyg_fsop_unlink *)cyg_fileio_erofs,
1552                 (cyg_fsop_mkdir *)cyg_fileio_erofs,
1553                 (cyg_fsop_rmdir *)cyg_fileio_erofs,
1554                 (cyg_fsop_rename *)cyg_fileio_erofs,
1555                 (cyg_fsop_link *)cyg_fileio_erofs,
1556                 (cyg_fsop_opendir *)cyg_fileio_erofs,
1557                 (cyg_fsop_chdir *)cyg_fileio_erofs,
1558                 (cyg_fsop_stat *)cyg_fileio_erofs,
1559                 (cyg_fsop_getinfo *)cyg_fileio_erofs,
1560                 (cyg_fsop_setinfo *)cyg_fileio_erofs);
1561
1562 // -------------------------------------------------------------------------
1563 // File operations.
1564 // This set of file operations are used for normal open files.
1565
1566 static cyg_fileops logfs_fileops =
1567 { (cyg_fileop_read *) cyg_fileio_erofs, (cyg_fileop_write *) logfs_fo_write,
1568                 (cyg_fileop_lseek *) cyg_fileio_erofs,
1569                 (cyg_fileop_ioctl *) cyg_fileio_erofs, cyg_fileio_seltrue,
1570                 logfs_fo_fsync, logfs_fo_close, (cyg_fileop_fstat *) cyg_fileio_erofs,
1571                 (cyg_fileop_getinfo *) cyg_fileio_erofs,
1572                 (cyg_fileop_setinfo *) cyg_fileio_erofs, };
1573
1574 // -------------------------------------------------------------------------
1575 // logfs_mount()
1576 // Process a mount request. This mainly finds root for the
1577 // filesystem.
1578
1579 static int logfs_mount(cyg_fstab_entry *fste, cyg_mtab_entry *mte)
1580 {
1581         return ENOERR;
1582 }
1583
1584 static int logfs_umount(cyg_mtab_entry *mte)
1585 {
1586         return ENOERR;
1587 }
1588
1589 static int logfs_open(cyg_mtab_entry *mte, cyg_dir dir, const char *name,
1590                 int mode, cyg_file *file)
1591 {
1592         file->f_flag |= mode & CYG_FILE_MODE_MASK;
1593         file->f_type = CYG_FILE_TYPE_FILE;
1594         file->f_ops = &logfs_fileops;
1595         file->f_offset = 0;
1596         file->f_data = 0;
1597         file->f_xops = 0;
1598         return ENOERR;
1599 }
1600
1601 // -------------------------------------------------------------------------
1602 // logfs_fo_write()
1603 // Write data to file.
1604
1605 static int logfs_fo_write(struct CYG_FILE_TAG *fp, struct CYG_UIO_TAG *uio)
1606 {
1607         int i;
1608         for (i = 0; i < uio->uio_iovcnt; i++)
1609         {
1610                 cyg_iovec *iov = &uio->uio_iov[i];
1611                 char *buf = (char *) iov->iov_base;
1612                 off_t len = iov->iov_len;
1613
1614                 diag_write(buf, len);
1615         }
1616         uio->uio_resid = 0;
1617
1618         return ENOERR;
1619 }
1620 static int logfs_fo_fsync(struct CYG_FILE_TAG *fp, int mode)
1621 {
1622         return ENOERR;
1623 }
1624
1625 // -------------------------------------------------------------------------
1626 // romfs_fo_close()
1627 // Close a file. We just clear out the data pointer.
1628
1629 static int logfs_fo_close(struct CYG_FILE_TAG *fp)
1630 {
1631         return ENOERR;
1632 }
1633
1634 int loadFile(const char *fileName, void **data, int *len);
1635
1636 /* boolean parameter stored on config */
1637 int boolParam(char *var)
1638 {
1639         bool result = false;
1640         char *name = alloc_printf("%s/%s", zylin_config_dir, var);
1641         if (name == NULL)
1642                 return result;
1643
1644         void *data;
1645         int len;
1646         if (loadFile(name, &data, &len) == ERROR_OK)
1647         {
1648                 if (len > 1)
1649                         len = 1;
1650                 result = strncmp((char *) data, "1", len) == 0;
1651                 free(data);
1652         }
1653         free(name);
1654         return result;
1655 }
1656