src/ecosboard.c

   1 /***************************************************************************
   2  *   Copyright (C) 2007-2010 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/util.h>
  28 #include <helper/configuration.h>
  29
  30 #include <server/server.h>
  31 #include <server/telnet_server.h>
  32 #include <server/gdb_server.h>
  33 #include <openocd.h>
  34
  35 #include <helper/time_support.h>
  36
  37 #include <sys/time.h>
  38 #include <stdio.h>
  39 #include <stdlib.h>
  40 #include <string.h>
  41 #include <unistd.h>
  42 #include <errno.h>
  43
  44 #include <cyg/io/flash.h>
  45 #include <pkgconf/fs_jffs2.h>   // Address of JFFS2
  46 #include <network.h>
  47
  48 #include <fcntl.h>
  49 #include <sys/stat.h>
  50 #include <cyg/fileio/fileio.h>
  51 #include <dirent.h>
  52 #include <cyg/athttpd/http.h>
  53 #include <cyg/athttpd/socket.h>
  54 #include <cyg/athttpd/handler.h>
  55 #include <cyg/athttpd/cgi.h>
  56 #include <cyg/athttpd/forms.h>
  57 #include <cyg/discover/discover.h>
  58 #include <cyg/io/io.h>
  59 #include <cyg/io/serialio.h>
  60 #include <netinet/tcp.h>
  61 #include <cyg/hal/hal_diag.h>
  62
  63 #include "rom.h"
  64
  65 #ifdef CYGPKG_HAL_NIOS2
  66 #include <cyg/hal/io.h>
  67 #define ZY1000_SER_DEV "/dev/uart_0"
  68 #else
  69 #define ZY1000_SER_DEV "/dev/ser0"
  70
  71 #endif
  72
  73
  74 #define MAX_IFS 64
  75 #if defined(CYGPKG_NET_FREEBSD_STACK)
  76 #include <tftp_support.h>
  77 /* posix compatibility broken*/
  78 struct tftpd_fileops fileops =
  79 {
  80         (int (*)(const char *, int))open,
  81         close,
  82         (int (*)(int, const void *, int))write,
  83         (int (*)(int, void *, int))read
  84 };
  85
  86 #endif
  87
  88
  89 void diag_write(char *buf, int len)
  90 {
  91         int j;
  92         for (j = 0; j < len; j++)
  93         {
  94                 diag_printf("%c", buf[j]);
  95         }
  96 }
  97
  98 static bool serialLog = true;
  99 static bool writeLog = true;
 100
 101 char hwaddr[512];
 102
 103 #ifdef CYGPKG_PROFILE_GPROF
 104 #include <cyg/profile/profile.h>
 105
 106 extern char _stext, _etext; // Defined by the linker
 107
 108 static char *start_of_code=&_stext;
 109 static char *end_of_code=&_etext;
 110
 111 void start_profile(void)
 112 {
 113         // This starts up the system-wide profiling, gathering
 114         // profile information on all of the code, with a 16 byte
 115         // "bucket" size, at a rate of 100us/profile hit.
 116         // Note: a bucket size of 16 will give pretty good function
 117         //       resolution.  Much smaller and the buffer becomes
 118         //       much too large for very little gain.
 119         // Note: a timer period of 100us is also a reasonable
 120         //       compromise.  Any smaller and the overhead of
 121         //       handling the timter (profile) interrupt could
 122         //       swamp the system.  A fast processor might get
 123         //       by with a smaller value, but a slow one could
 124         //       even be swamped by this value.  If the value is
 125         //       too large, the usefulness of the profile is reduced.
 126
 127         // no more interrupts than 1/10ms.
 128         //profile_on((void *)0, (void *)0x40000, 16, 10000); // SRAM
 129         //      profile_on(0, &_etext, 16, 10000); // SRAM & DRAM
 130         profile_on(start_of_code, end_of_code, 16, 10000); // Nios DRAM
 131 }
 132 #endif
 133
 134 static FILE *log;
 135
 136 static char reboot_stack[2048];
 137
 138 static void zylinjtag_reboot(cyg_addrword_t data)
 139 {
 140         serialLog = true;
 141         diag_printf("Rebooting in 500 ticks..\n");
 142         cyg_thread_delay(500);
 143         diag_printf("Unmounting /config..\n");
 144         umount("/config");
 145         diag_printf("Rebooting..\n");
 146 #ifdef CYGPKG_HAL_NIOS2
 147         /* This will reboot & reconfigure the FPGA from the bootloader
 148          * and on.
 149          */
 150         IOWR(REMOTE_UPDATE_BASE, 0x20, 0x1);
 151 #else
 152         HAL_PLATFORM_RESET();
 153 #endif
 154 }
 155 static cyg_thread zylinjtag_thread_object;
 156 static cyg_handle_t zylinjtag_thread_handle;
 157
 158 void reboot(void)
 159 {
 160         cyg_thread_create(1, zylinjtag_reboot, (cyg_addrword_t) 0, "reboot Thread",
 161                         (void *) reboot_stack, sizeof(reboot_stack),
 162                         &zylinjtag_thread_handle, &zylinjtag_thread_object);
 163         cyg_thread_resume(zylinjtag_thread_handle);
 164 }
 165
 166 static char zylinjtag_reboot_port_stack[2048];
 167 static cyg_thread zylinjtag_reboot_port_thread_object;
 168 static cyg_handle_t zylinjtag_reboot_port_thread_handle;
 169
 170 static void zylinjtag_reboot_port_task(cyg_addrword_t data)
 171 {
 172         int so_reuseaddr_option = 1;
 173
 174         int fd;
 175         if ((fd = socket(AF_INET, SOCK_STREAM, 0)) == -1)
 176         {
 177                 LOG_ERROR("error creating socket: %s", strerror(errno));
 178                 exit(-1);
 179         }
 180
 181         setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (void*) &so_reuseaddr_option,
 182                         sizeof(int));
 183
 184         struct sockaddr_in sin;
 185         unsigned int address_size;
 186         address_size = sizeof(sin);
 187         memset(&sin, 0, sizeof(sin));
 188         sin.sin_family = AF_INET;
 189         sin.sin_addr.s_addr = INADDR_ANY;
 190         sin.sin_port = htons(1234);
 191
 192         if (bind(fd, (struct sockaddr *) &sin, sizeof(sin)) == -1)
 193         {
 194                 LOG_ERROR("couldn't bind to socket: %s", strerror(errno));
 195                 exit(-1);
 196         }
 197
 198         if (listen(fd, 1) == -1)
 199         {
 200                 LOG_ERROR("couldn't listen on socket: %s", strerror(errno));
 201                 exit(-1);
 202         }
 203         //      socket_nonblock(fd);
 204
 205
 206         accept(fd, (struct sockaddr *) &sin, &address_size);
 207
 208         diag_printf("Got reboot signal on port 1234");
 209
 210         reboot();
 211
 212 }
 213
 214 void reboot_port(void)
 215 {
 216         cyg_thread_create(1, zylinjtag_reboot_port_task, (cyg_addrword_t) 0, "wait for reboot signal on port 1234",
 217                         (void *) zylinjtag_reboot_port_stack, sizeof(zylinjtag_reboot_port_stack),
 218                         &zylinjtag_reboot_port_thread_handle, &zylinjtag_reboot_port_thread_object);
 219         cyg_thread_resume(zylinjtag_reboot_port_thread_handle);
 220 }
 221
 222 int configuration_output_handler(struct command_context *context,
 223                 const char* line)
 224 {
 225         diag_printf("%s", line);
 226
 227         return ERROR_OK;
 228 }
 229
 230 int zy1000_configuration_output_handler_log(struct command_context *context,
 231                 const char* line)
 232 {
 233         LOG_USER_N("%s", line);
 234
 235         return ERROR_OK;
 236 }
 237
 238 #ifdef CYGPKG_PROFILE_GPROF
 239 //extern int64_t totaltime;
 240
 241 static int zylinjtag_Jim_Command_profile(Jim_Interp *interp, int argc,
 242                 Jim_Obj * const *argv)
 243 {
 244         if ((argc == 2) && (strcmp(Jim_GetString(argv[1], NULL), "stats")==0))
 245         {
 246 //              profile_off();
 247                 //LOG_USER("Stats %dms sleeping in select()", (int)totaltime);
 248         } else
 249         {
 250                 LOG_USER("Profiling started");
 251                 start_profile();
 252                 //totaltime = 0;
 253         }
 254         return ERROR_OK;
 255 }
 256
 257 #endif
 258
 259 externC void phi_init_all_network_interfaces(void);
 260
 261 struct command_context *cmd_ctx;
 262
 263 static bool webRunning = false;
 264
 265 void keep_webserver(void)
 266 {
 267         // Target initialisation is only attempted at startup, so we sleep forever and
 268         // let the http server bail us out(i.e. get config files set up).
 269         diag_printf("OpenOCD has invoked exit().\n"
 270                 "Use web server to correct any configuration settings and reboot.\n");
 271         if (!webRunning)
 272                 reboot();
 273
 274         // exit() will terminate the current thread and we we'll then sleep eternally or
 275         // we'll have a reboot scheduled.
 276 }
 277
 278 extern void printDccChar(char c);
 279
 280 static char logBuffer[128 * 1024];
 281 static const int logSize = sizeof(logBuffer);
 282 int writePtr = 0;
 283 int logCount = 0;
 284
 285 void _zylinjtag_diag_write_char(char c, void **param)
 286 {
 287         if (writeLog)
 288         {
 289                 logBuffer[writePtr] = c;
 290                 writePtr = (writePtr + 1) % logSize;
 291                 logCount++;
 292         }
 293         if (serialLog)
 294         {
 295                 if (c == '\n')
 296                 {
 297                         HAL_DIAG_WRITE_CHAR('\r');
 298                 }
 299                 HAL_DIAG_WRITE_CHAR(c);
 300         }
 301
 302 #ifdef CYGPKG_HAL_ZYLIN_PHI
 303         printDccChar(c);
 304 #endif
 305 }
 306
 307 void copyfile(char *name2, char *name1);
 308
 309 void copydir(char *name, char *destdir);
 310
 311 #if 0
 312 MTAB_ENTRY(romfs_mte1,
 313                 "/rom",
 314                 "romfs",
 315                 "",
 316                 (CYG_ADDRWORD) &filedata[0]);
 317 #endif
 318
 319 void openocd_sleep_prelude(void)
 320 {
 321         cyg_mutex_unlock(&httpstate.jim_lock);
 322 }
 323
 324 void openocd_sleep_postlude(void)
 325 {
 326         cyg_mutex_lock(&httpstate.jim_lock);
 327 }
 328
 329 void format(void)
 330 {
 331 #ifdef CYGDAT_IO_FLASH_BLOCK_DEVICE_NAME_1
 332         diag_printf("Formatting JFFS2...\n");
 333
 334         cyg_io_handle_t handle;
 335
 336         Cyg_ErrNo err;
 337         err = cyg_io_lookup(CYGDAT_IO_FLASH_BLOCK_DEVICE_NAME_1, &handle);
 338         if (err != ENOERR)
 339         {
 340                 diag_printf("Flash Error cyg_io_lookup: %d\n", err);
 341                 reboot();
 342         }
 343
 344         cyg_uint32 len;
 345         cyg_io_flash_getconfig_devsize_t ds;
 346         len = sizeof(ds);
 347         err = cyg_io_get_config(handle, CYG_IO_GET_CONFIG_FLASH_DEVSIZE, &ds, &len);
 348         if (err != ENOERR)
 349         {
 350                 diag_printf("Flash error cyg_io_get_config %d\n", err);
 351                 reboot();
 352         }
 353
 354         cyg_io_flash_getconfig_erase_t e;
 355         len = sizeof(e);
 356
 357         e.offset = 0;
 358         e.len = ds.dev_size;
 359
 360         diag_printf("Formatting 0x%08x bytes\n", (int)ds.dev_size);
 361         err = cyg_io_get_config(handle, CYG_IO_GET_CONFIG_FLASH_ERASE, &e, &len);
 362         if (err != ENOERR)
 363         {
 364                 diag_printf("Flash erase error %d offset 0x%08x\n", err, e.err_address);
 365                 reboot();
 366         }
 367
 368         diag_printf("Flash formatted successfully\n");
 369 #endif
 370
 371         reboot();
 372 }
 373
 374 static int zylinjtag_Jim_Command_format_jffs2(Jim_Interp *interp, int argc,
 375                 Jim_Obj * const *argv)
 376 {
 377         if (argc != 1)
 378         {
 379                 return JIM_ERR;
 380         }
 381
 382         format();
 383         for (;;)
 384                 ;
 385 }
 386
 387 static int zylinjtag_Jim_Command_threads(Jim_Interp *interp, int argc,
 388                 Jim_Obj * const *argv)
 389 {
 390         cyg_handle_t thread = 0;
 391         cyg_uint16 id = 0;
 392         Jim_Obj *threads = Jim_NewListObj(interp, NULL, 0);
 393
 394         /* Loop over the threads, and generate a table row for
 395          * each.
 396          */
 397         while (cyg_thread_get_next(&thread, &id))
 398         {
 399                 Jim_Obj *threadObj = Jim_NewListObj(interp, NULL, 0);
 400
 401                 cyg_thread_info info;
 402                 char *state_string;
 403
 404                 cyg_thread_get_info(thread, id, &info);
 405
 406                 if (info.name == NULL)
 407                         info.name = "<no name>";
 408
 409                 Jim_ListAppendElement(interp, threadObj, Jim_NewStringObj(interp,
 410                                 info.name, strlen(info.name)));
 411
 412                 /* Translate the state into a string.
 413                  */
 414                 if (info.state == 0)
 415                         state_string = "RUN";
 416                 else if (info.state & 0x04)
 417                         state_string = "SUSP";
 418                 else
 419                         switch (info.state & 0x1b)
 420                         {
 421                         case 0x01:
 422                                 state_string = "SLEEP";
 423                                 break;
 424                         case 0x02:
 425                                 state_string = "CNTSLEEP";
 426                                 break;
 427                         case 0x08:
 428                                 state_string = "CREATE";
 429                                 break;
 430                         case 0x10:
 431                                 state_string = "EXIT";
 432                                 break;
 433                         default:
 434                                 state_string = "????";
 435                                 break;
 436                         }
 437
 438                 Jim_ListAppendElement(interp, threadObj, Jim_NewStringObj(interp,
 439                                 state_string, strlen(state_string)));
 440
 441                 Jim_ListAppendElement(interp, threadObj, Jim_NewIntObj(interp, id));
 442                 Jim_ListAppendElement(interp, threadObj, Jim_NewIntObj(interp,
 443                                 info.set_pri));
 444                 Jim_ListAppendElement(interp, threadObj, Jim_NewIntObj(interp,
 445                                 info.cur_pri));
 446
 447                 Jim_ListAppendElement(interp, threads, threadObj);
 448         }
 449         Jim_SetResult(interp, threads);
 450
 451         return JIM_OK;
 452 }
 453
 454 static int zylinjtag_Jim_Command_log(Jim_Interp *interp, int argc,
 455                 Jim_Obj * const *argv)
 456 {
 457         Jim_Obj *tclOutput = Jim_NewStringObj(interp, "", 0);
 458
 459         if (logCount >= logSize)
 460         {
 461                 Jim_AppendString(httpstate.jim_interp, tclOutput, logBuffer + logCount
 462                                 % logSize, logSize - logCount % logSize);
 463         }
 464         Jim_AppendString(httpstate.jim_interp, tclOutput, logBuffer, writePtr);
 465
 466         Jim_SetResult(interp, tclOutput);
 467         return JIM_OK;
 468 }
 469
 470 static int zylinjtag_Jim_Command_reboot(Jim_Interp *interp, int argc,
 471                 Jim_Obj * const *argv)
 472 {
 473         reboot();
 474         return JIM_OK;
 475 }
 476
 477 static void zylinjtag_startNetwork(void)
 478 {
 479         // Bring TCP/IP up immediately before we're ready to accept commands.
 480         //
 481         // That is as soon as a PING responds, we're accepting telnet sessions.
 482 #if defined(CYGPKG_NET_FREEBSD_STACK)
 483         phi_init_all_network_interfaces();
 484 #else
 485         lwip_init();
 486 #endif
 487         if (!eth0_up)
 488         {
 489                 diag_printf("Network not up and running\n");
 490                 exit(-1);
 491         }
 492
 493         /* very first thing we want is a reboot capability */
 494         reboot_port();
 495
 496 #if defined(CYGPKG_NET_FREEBSD_STACK)
 497         /*start TFTP*/
 498         tftpd_start(69, &fileops);
 499 #endif
 500
 501         cyg_httpd_init_tcl_interpreter();
 502
 503         // Kludge! Why can't I do this from httpd.c??? I get linker errors...
 504         // some of that --start/end-group stuff?
 505     Jim_InitStaticExtensions(httpstate.jim_interp);
 506
 507         Jim_CreateCommand(httpstate.jim_interp, "log", zylinjtag_Jim_Command_log,
 508                         NULL, NULL);
 509         Jim_CreateCommand(httpstate.jim_interp, "zy1000_reboot",
 510                         zylinjtag_Jim_Command_reboot, NULL, NULL);
 511         Jim_CreateCommand(httpstate.jim_interp, "threads",
 512                         zylinjtag_Jim_Command_threads, NULL, NULL);
 513         Jim_CreateCommand(httpstate.jim_interp, "format_jffs2",
 514                         zylinjtag_Jim_Command_format_jffs2, NULL, NULL);
 515
 516         cyg_httpd_start();
 517
 518         webRunning = true;
 519
 520         diag_printf("Web server running\n");
 521
 522         int s;
 523         struct ifreq ifr;
 524         s = socket(AF_INET, SOCK_DGRAM, 0);
 525         if (s >= 0)
 526         {
 527                 strcpy(ifr.ifr_name, "eth0");
 528                 int res;
 529                 res = ioctl(s, SIOCGIFHWADDR, &ifr);
 530                 close(s);
 531
 532                 if (res < 0)
 533                 {
 534                         diag_printf("Can't obtain MAC address\n");
 535                         reboot();
 536                 }
 537         }
 538
 539         sprintf(hwaddr, "%02x:%02x:%02x:%02x:%02x:%02x",
 540                         (int) ((unsigned char *) &ifr.ifr_hwaddr.sa_data)[0],
 541                         (int) ((unsigned char *) &ifr.ifr_hwaddr.sa_data)[1],
 542                         (int) ((unsigned char *) &ifr.ifr_hwaddr.sa_data)[2],
 543                         (int) ((unsigned char *) &ifr.ifr_hwaddr.sa_data)[3],
 544                         (int) ((unsigned char *) &ifr.ifr_hwaddr.sa_data)[4],
 545                         (int) ((unsigned char *) &ifr.ifr_hwaddr.sa_data)[5]);
 546
 547         discover_message
 548                         = alloc_printf("ZY1000 Zylin JTAG debugger MAC %s", hwaddr);
 549
 550         discover_launch();
 551 }
 552
 553 static void print_exception_handler(cyg_addrword_t data, cyg_code_t exception,
 554                 cyg_addrword_t info)
 555 {
 556         writeLog = false;
 557         serialLog = true;
 558         char *infoStr = "unknown";
 559         switch (exception)
 560         {
 561 #ifdef CYGNUM_HAL_VECTOR_UNDEF_INSTRUCTION
 562         case CYGNUM_HAL_VECTOR_UNDEF_INSTRUCTION:
 563         infoStr = "undefined instruction";
 564         break;
 565         case CYGNUM_HAL_VECTOR_SOFTWARE_INTERRUPT:
 566         infoStr = "software interrupt";
 567         break;
 568         case CYGNUM_HAL_VECTOR_ABORT_PREFETCH:
 569         infoStr = "abort prefetch";
 570         break;
 571         case CYGNUM_HAL_VECTOR_ABORT_DATA:
 572         infoStr = "abort data";
 573         break;
 574 #endif
 575         default:
 576                 break;
 577         }
 578
 579         diag_printf("Exception: %08x(%s) %08x\n", exception, infoStr, info);
 580
 581         diag_printf("Dumping log\n---\n");
 582         if (logCount >= logSize)
 583         {
 584                 diag_write(logBuffer + logCount % logSize, logSize - logCount % logSize);
 585         }
 586         diag_write(logBuffer, writePtr);
 587
 588         diag_printf("---\nLogdump complete.\n");
 589         diag_printf("Exception: %08x(%s) %08x\n", exception, infoStr, info);
 590         diag_printf("\n---\nRebooting\n");
 591         HAL_PLATFORM_RESET();
 592
 593 }
 594
 595 #ifdef CYGNUM_HAL_VECTOR_UNDEF_INSTRUCTION
 596 static void setHandler(cyg_code_t exception)
 597 {
 598         cyg_exception_handler_t *old_handler;
 599         cyg_addrword_t old_data;
 600
 601         cyg_exception_set_handler(exception, print_exception_handler, 0,
 602                         &old_handler, &old_data);
 603 }
 604 #endif
 605
 606 static cyg_thread zylinjtag_uart_thread_object;
 607 static cyg_handle_t zylinjtag_uart_thread_handle;
 608 static char uart_stack[4096];
 609
 610 static char forwardBuffer[1024]; // NB! must be smaller than a TCP/IP packet!!!!!
 611 static char backwardBuffer[1024];
 612
 613 void setNoDelay(int session, int flag)
 614 {
 615 #if 1
 616         // This decreases latency dramatically for e.g. GDB load which
 617         // does not have a sliding window protocol
 618         //
 619         // Can cause *lots* of TCP/IP packets to be sent and it would have
 620         // to be enabled/disabled on the fly to avoid the CPU being
 621         // overloaded...
 622         setsockopt(session, /* socket affected */
 623         IPPROTO_TCP, /* set option at TCP level */
 624         TCP_NODELAY, /* name of option */
 625         (char *) &flag, /* the cast is historical
 626          cruft */
 627         sizeof(int)); /* length of option value */
 628 #endif
 629 }
 630
 631 #define TEST_TCPIP() 0
 632
 633 #if TEST_TCPIP
 634 struct
 635 {
 636         int req;
 637         int actual;
 638         int req2;
 639         int actual2;
 640 } tcpipSent[512 * 1024];
 641 int cur;
 642 #endif
 643
 644 static void zylinjtag_uart(cyg_addrword_t data)
 645 {
 646         int so_reuseaddr_option = 1;
 647
 648         int fd;
 649         if ((fd = socket(AF_INET, SOCK_STREAM, 0)) == -1)
 650         {
 651                 LOG_ERROR("error creating socket: %s", strerror(errno));
 652                 exit(-1);
 653         }
 654
 655         setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (void*) &so_reuseaddr_option,
 656                         sizeof(int));
 657
 658         struct sockaddr_in sin;
 659         unsigned int address_size;
 660         address_size = sizeof(sin);
 661         memset(&sin, 0, sizeof(sin));
 662         sin.sin_family = AF_INET;
 663         sin.sin_addr.s_addr = INADDR_ANY;
 664         sin.sin_port = htons(5555);
 665
 666         if (bind(fd, (struct sockaddr *) &sin, sizeof(sin)) == -1)
 667         {
 668                 LOG_ERROR("couldn't bind to socket: %s", strerror(errno));
 669                 exit(-1);
 670         }
 671
 672         if (listen(fd, 1) == -1)
 673         {
 674                 LOG_ERROR("couldn't listen on socket: %s", strerror(errno));
 675                 exit(-1);
 676         }
 677         //      socket_nonblock(fd);
 678
 679
 680         for (;;)
 681         {
 682                 int session = accept(fd, (struct sockaddr *) &sin, &address_size);
 683                 if (session < 0)
 684                 {
 685                         continue;
 686                 }
 687
 688                 setNoDelay(session, 1);
 689                 int oldopts = fcntl(session, F_GETFL, 0);
 690                 fcntl(session, F_SETFL, oldopts | O_NONBLOCK); //
 691
 692                 int serHandle = open(ZY1000_SER_DEV, O_RDWR | O_NONBLOCK);
 693                 if (serHandle < 0)
 694                 {
 695                         close(session);
 696                         continue;
 697                 }
 698
 699 #ifdef CYGPKG_PROFILE_GPROF
 700                 start_profile();
 701 #endif
 702                 size_t actual = 0;
 703                 size_t actual2 = 0;
 704                 size_t pos, pos2;
 705                 pos = 0;
 706                 pos2 = 0;
 707 #if TEST_TCPIP
 708                 cur = 0;
 709 #endif
 710                 for (;;)
 711                 {
 712                         fd_set write_fds;
 713                         fd_set read_fds;
 714                         FD_ZERO(&write_fds);
 715                         FD_ZERO(&read_fds);
 716                         int fd_max = -1;
 717                         FD_SET(session, &read_fds);
 718                         fd_max = session;
 719                         FD_SET(serHandle, &read_fds);
 720                         if (serHandle > fd_max)
 721                         {
 722                                 fd_max = serHandle;
 723                         }
 724                         /* Wait... */
 725
 726                         cyg_thread_delay(5); // 50ms fixed delay to wait for data to be sent/received
 727                         if ((actual == 0) && (actual2 == 0))
 728                         {
 729                                 int retval = select(fd_max + 1, &read_fds, NULL, NULL, NULL);
 730                                 if (retval <= 0)
 731                                 {
 732                                         break;
 733                                 }
 734                         }
 735
 736                         if (actual2 <= 0)
 737                         {
 738                                 memset(backwardBuffer, 's', sizeof(backwardBuffer));
 739                                 int t;
 740                                 t = read(serHandle, backwardBuffer,
 741                                                 sizeof(backwardBuffer));
 742                                 actual2 = t;
 743                                 if (t < 0)
 744                                 {
 745                                         if (errno != EAGAIN)
 746                                         {
 747                                                 goto closeSession;
 748                                         }
 749                                         actual2 = 0;
 750                                 }
 751                                 pos2 = 0;
 752                         }
 753
 754                         size_t y = 0;
 755                         if (actual2 > 0)
 756                         {
 757                                 int written = write(session, backwardBuffer + pos2, actual2);
 758                                 if (written <= 0)
 759                                         goto closeSession;
 760                                 actual2 -= written;
 761                                 pos2 += written;
 762                                 y = written;
 763                         }
 764
 765                         if (FD_ISSET(session, &read_fds)
 766                                         && (sizeof(forwardBuffer) > actual))
 767                         {
 768                                 // NB! Here it is important that we empty the TCP/IP read buffer
 769                                 // to make transmission tick right
 770                                 memmove(forwardBuffer, forwardBuffer + pos, actual);
 771                                 pos = 0;
 772                                 int t;
 773                                 // this will block if there is no data at all
 774                                 t = read_socket(session, forwardBuffer + actual,
 775                                                 sizeof(forwardBuffer) - actual);
 776                                 if (t <= 0)
 777                                 {
 778                                         goto closeSession;
 779                                 }
 780                                 actual += t;
 781                         }
 782
 783                         int y2 = 0;
 784                         if (actual > 0)
 785                         {
 786                                 /* Do not put things into the serial buffer if it has something to send
 787                                  * as that can cause a single byte to be sent at the time.
 788                                  *
 789                                  *
 790                                  */
 791                                 int written = write(serHandle, forwardBuffer + pos, actual);
 792                                 if (written < 0)
 793                                 {
 794                                         if (errno != EAGAIN)
 795                                         {
 796                                                 goto closeSession;
 797                                         }
 798                                         // The serial buffer is full
 799                                         written = 0;
 800                                 }
 801                                 else
 802                                 {
 803                                         actual -= written;
 804                                         pos += written;
 805                                 }
 806                                 y2 = written;
 807                         }
 808 #if TEST_TCPIP
 809                         if (cur < 1024)
 810                         {
 811                                 tcpipSent[cur].req = x;
 812                                 tcpipSent[cur].actual = y;
 813                                 tcpipSent[cur].req2 = x2;
 814                                 tcpipSent[cur].actual2 = y2;
 815                                 cur++;
 816                         }
 817 #endif
 818                 }
 819                 closeSession: close(session);
 820                 close(serHandle);
 821
 822 #if TEST_TCPIP
 823                 int i;
 824                 for (i = 0; i < 1024; i++)
 825                 {
 826                         diag_printf("%d %d %d %d\n", tcpipSent[i].req, tcpipSent[i].actual,
 827                                         tcpipSent[i].req2, tcpipSent[i].actual2);
 828
 829                 }
 830 #endif
 831         }
 832         close(fd);
 833
 834 }
 835
 836 void startUart(void)
 837 {
 838         cyg_thread_create(1, zylinjtag_uart, (cyg_addrword_t) 0, "uart thread",
 839                         (void *) uart_stack, sizeof(uart_stack),
 840                         &zylinjtag_uart_thread_handle, &zylinjtag_uart_thread_object);
 841         cyg_thread_set_priority(zylinjtag_uart_thread_handle, 1); // low priority as it sits in a busy loop
 842         cyg_thread_resume(zylinjtag_uart_thread_handle);
 843 }
 844
 845 static int zylinjtag_Jim_Command_uart(Jim_Interp *interp, int argc,
 846                 Jim_Obj * const *argv)
 847 {
 848         static int current_baud = 38400;
 849         if (argc == 1)
 850         {
 851                 Jim_SetResult(interp, Jim_NewIntObj(interp, current_baud));
 852                 return JIM_OK;
 853         }
 854         else if (argc != 2)
 855         {
 856                 return JIM_ERR;
 857         }
 858
 859         long new_baudrate;
 860         if (Jim_GetLong(interp, argv[1], &new_baudrate) != JIM_OK)
 861                 return JIM_ERR;
 862
 863         current_baud = new_baudrate;
 864
 865         int baud;
 866         switch (current_baud)
 867         {
 868         case 9600:
 869                 baud = CYGNUM_SERIAL_BAUD_9600;
 870                 break;
 871         case 19200:
 872                 baud = CYGNUM_SERIAL_BAUD_19200;
 873                 break;
 874         case 38400:
 875                 baud = CYGNUM_SERIAL_BAUD_38400;
 876                 break;
 877         case 57600:
 878                 baud = CYGNUM_SERIAL_BAUD_57600;
 879                 break;
 880         case 115200:
 881                 baud = CYGNUM_SERIAL_BAUD_115200;
 882                 break;
 883         case 230400:
 884                 baud = CYGNUM_SERIAL_BAUD_230400;
 885                 break;
 886         default:
 887                 Jim_SetResult(interp, Jim_NewStringObj(interp, "unsupported baudrate", -1));
 888                 return JIM_ERR;
 889         }
 890
 891         cyg_serial_info_t buf;
 892         cyg_uint32 len = 1;
 893         //get existing serial configuration
 894         len = sizeof(cyg_serial_info_t);
 895         int err;
 896         cyg_io_handle_t serial_handle;
 897
 898         err = cyg_io_lookup(ZY1000_SER_DEV, &serial_handle);
 899         if (err != ENOERR)
 900         {
 901                 Jim_SetResult(interp, Jim_NewStringObj(interp, "Could not open serial port", -1));
 902                 return JIM_ERR;
 903         }
 904
 905         err = cyg_io_get_config(serial_handle,
 906                         CYG_IO_GET_CONFIG_SERIAL_OUTPUT_DRAIN, &buf, &len);
 907         err = cyg_io_get_config(serial_handle, CYG_IO_GET_CONFIG_SERIAL_INFO, &buf,
 908                         &len);
 909         if (err != ENOERR)
 910         {
 911                 Jim_SetResult(interp, Jim_NewStringObj(interp, "Failed to get serial port settings", -1));
 912                 return JIM_ERR;
 913         }
 914         buf.baud = baud;
 915
 916         err = cyg_io_set_config(serial_handle, CYG_IO_SET_CONFIG_SERIAL_INFO, &buf,
 917                         &len);
 918         if (err != ENOERR)
 919         {
 920                 Jim_SetResult(interp, Jim_NewStringObj(interp, "Failed to set serial port settings", -1));
 921                 return JIM_ERR;
 922         }
 923
 924         return JIM_OK;
 925 }
 926
 927 bool logAllToSerial = false;
 928
 929
 930 int boolParam(char *var);
 931
 932
 933 static const char *zylin_config_dir="/config/settings";
 934
 935 static int add_default_dirs(void)
 936 {
 937         add_script_search_dir(zylin_config_dir);
 938         add_script_search_dir("/rom/lib/openocd");
 939         add_script_search_dir("/rom");
 940         return ERROR_OK;
 941 }
 942
 943 int main(int argc, char *argv[])
 944 {
 945         /* ramblockdevice will be the same address every time. The deflate app uses a buffer 16mBytes out, so we
 946          * need to allocate towards the end of the heap.  */
 947
 948 #ifdef CYGNUM_HAL_VECTOR_UNDEF_INSTRUCTION
 949         setHandler(CYGNUM_HAL_VECTOR_UNDEF_INSTRUCTION);
 950         setHandler(CYGNUM_HAL_VECTOR_ABORT_PREFETCH);
 951         setHandler(CYGNUM_HAL_VECTOR_ABORT_DATA);
 952 #endif
 953
 954         int err;
 955
 956         atexit(keep_webserver);
 957
 958         diag_init_putc(_zylinjtag_diag_write_char);
 959         // We want this in the log.
 960 #ifdef CYGPKG_HAL_NIOS2
 961         diag_printf("Zylin ZY1000 PCB revc.\n");
 962 #else
 963         diag_printf("Zylin ZY1000 PCB revb.\n");
 964 #endif
 965
 966         err = mount("", "/ram", "ramfs");
 967         if (err < 0)
 968         {
 969                 diag_printf("unable to mount ramfs\n");
 970         }
 971         chdir("/ram");
 972
 973         char address[16];
 974         sprintf(address, "%p", &filedata[0]);
 975         err = mount(address, "/rom", "romfs");
 976         if (err < 0)
 977         {
 978                 diag_printf("unable to mount /rom\n");
 979         }
 980
 981         err = mount("", "/log", "logfs");
 982         if (err < 0)
 983         {
 984                 diag_printf("unable to mount logfs\n");
 985         }
 986
 987         err = mount("", "/tftp", "tftpfs");
 988         if (err < 0)
 989         {
 990                 diag_printf("unable to mount logfs\n");
 991         }
 992
 993         log = fopen("/log/log", "w");
 994         if (log == NULL)
 995         {
 996                 diag_printf("Could not open log file /ram/log\n");
 997                 exit(-1);
 998         }
 999
1000
1001         copydir("/rom", "/ram/cgi");
1002
1003 #ifdef CYGPKG_HAL_NIOS2
1004         cyg_flashaddr_t err_address;
1005 #define UNCACHED_EXT_FLASH_BASE (0x80000000 + EXT_FLASH_BASE)
1006         /* The revc flash is locked upon reset, unlock it */
1007 #ifdef CYGHWR_IO_FLASH_BLOCK_LOCKING
1008         if ((err = flash_unlock((void *) UNCACHED_EXT_FLASH_BASE, EXT_FLASH_SPAN,
1009                         (void **) &err_address)) != 0)
1010         {
1011                 diag_printf("Error: could not unlock flash\n");
1012         }
1013 #endif
1014 #endif
1015
1016
1017         err = mount("/dev/flash1", "/config", "jffs2");
1018         if (err < 0)
1019         {
1020                 diag_printf("unable to mount jffs2, falling back to ram disk..\n");
1021                 err = mount("", "/config", "ramfs");
1022                 if (err < 0)
1023                 {
1024                         diag_printf("unable to mount /config as ramdisk.\n");
1025                         reboot();
1026                 }
1027         }
1028         else
1029         {
1030                 /* are we using a ram disk instead of a flash disk? This is used
1031                  * for ZY1000 live demo...
1032                  *
1033                  * copy over flash disk to ram block device
1034                  */
1035                 if (boolParam("ramdisk"))
1036                 {
1037                         diag_printf("Unmounting /config from flash and using ram instead\n");
1038                         err = umount("/config");
1039                         if (err < 0)
1040                         {
1041                                 diag_printf("unable to unmount jffs\n");
1042                                 reboot();
1043                         }
1044
1045                         err = mount("/dev/flash1", "/config2", "jffs2");
1046                         if (err < 0)
1047                         {
1048                                 diag_printf("unable to mount jffs\n");
1049                                 reboot();
1050                         }
1051
1052                         err = mount("", "/config", "ramfs");
1053                         if (err < 0)
1054                         {
1055                                 diag_printf("unable to mount ram block device\n");
1056                                 reboot();
1057                         }
1058
1059                         //              copydir("/config2", "/config");
1060                         copyfile("/config2/ip", "/config/ip");
1061                         copydir("/config2/settings", "/config/settings");
1062
1063                         umount("/config2");
1064                 }
1065         }
1066
1067         mkdir(zylin_config_dir, 0777);
1068         char *dirname = alloc_printf("%s/target", zylin_config_dir);
1069         mkdir(dirname, 0777);
1070         free(dirname);
1071         dirname = alloc_printf("%s/board", zylin_config_dir);
1072         mkdir(dirname, 0777);
1073         free(dirname);
1074         dirname = alloc_printf("%s/event", zylin_config_dir);
1075         mkdir(dirname, 0777);
1076         free(dirname);
1077
1078         logAllToSerial = boolParam("logserial");
1079
1080         // We need the network & web server in case there is something wrong with
1081         // the config files that invoke exit()
1082         zylinjtag_startNetwork();
1083
1084         /* we're going to access the jim interpreter from here on... */
1085         openocd_sleep_postlude();
1086         startUart();
1087
1088         add_default_dirs();
1089
1090         /* initialize commandline interface */
1091         struct command_context * cmd_ctx;
1092         struct command_context *setup_command_handler(Jim_Interp *interp);
1093         cmd_ctx = setup_command_handler(httpstate.jim_interp);
1094         command_set_output_handler(cmd_ctx, configuration_output_handler, NULL);
1095         command_context_mode(cmd_ctx, COMMAND_CONFIG);
1096
1097         if (util_init(cmd_ctx) != ERROR_OK)
1098                 return EXIT_FAILURE;
1099
1100         if (ioutil_init(cmd_ctx) != ERROR_OK)
1101                 return EXIT_FAILURE;
1102
1103 #ifdef CYGPKG_PROFILE_GPROF
1104         Jim_CreateCommand(httpstate.jim_interp, "zy1000_profile", zylinjtag_Jim_Command_profile,
1105                         NULL, NULL);
1106 #endif
1107
1108         Jim_CreateCommand(httpstate.jim_interp, "zy1000_uart", zylinjtag_Jim_Command_uart, NULL, NULL);
1109
1110
1111         log_init();
1112
1113         set_log_output(cmd_ctx, log);
1114
1115         LOG_DEBUG("log init complete");
1116
1117         //      diag_printf("Executing config files\n");
1118
1119         if (logAllToSerial)
1120         {
1121                 diag_printf(
1122                                  "%s/logserial = 1 => sending log output to serial port using \"debug_level 3\" as default.\n", zylin_config_dir);
1123                 command_run_line(cmd_ctx, "debug_level 3");
1124         }
1125
1126         command_run_linef(cmd_ctx, "script /rom/openocd.cfg");
1127
1128         int ret;
1129         ret = server_init(cmd_ctx);
1130         if (ERROR_OK != ret)
1131                 return EXIT_FAILURE;
1132
1133         /* we MUST always run the init command as it will launch telnet sessions */
1134         command_run_line(cmd_ctx, "init");
1135
1136         // FIX!!!  Yuk!
1137         // diag_printf() is really invoked from many more places than we trust it
1138         // not to cause instabilities(e.g. invoking fputc() from an interrupt is *BAD*).
1139         //
1140         // Disabling it here is safe and gives us enough logged debug output for now. Crossing
1141         // fingers that it doesn't cause any crashes.
1142         diag_printf("Init complete, GDB & telnet servers launched.\n");
1143         command_set_output_handler(cmd_ctx,
1144                         zy1000_configuration_output_handler_log, NULL);
1145         if (!logAllToSerial)
1146         {
1147                 serialLog = false;
1148         }
1149
1150         /* handle network connections */
1151         server_loop(cmd_ctx);
1152         openocd_sleep_prelude();
1153
1154         /* shut server down */
1155         server_quit();
1156
1157         /* free commandline interface */
1158         command_done(cmd_ctx);
1159         umount("/config");
1160
1161         exit(0);
1162         for (;;)
1163                 ;
1164 }
1165
1166 cyg_int32 cyg_httpd_exec_cgi_tcl(char *file_name);
1167 cyg_int32 homeForm(CYG_HTTPD_STATE *p)
1168 {
1169         cyg_httpd_exec_cgi_tcl("/ram/cgi/index.tcl");
1170         return 0;
1171 }
1172
1173 CYG_HTTPD_HANDLER_TABLE_ENTRY(root_label, "/", homeForm);
1174
1175 CYG_HTTPD_MIME_TABLE_ENTRY(text_mime_label, "text", "text/plain");
1176 CYG_HTTPD_MIME_TABLE_ENTRY(bin_mime_label, "bin", "application/octet-stream");
1177
1178 #include <pkgconf/system.h>
1179 #include <pkgconf/hal.h>
1180 #include <pkgconf/kernel.h>
1181 #include <pkgconf/io_fileio.h>
1182 #include <pkgconf/fs_rom.h>
1183
1184 #include <cyg/kernel/ktypes.h>         // base kernel types
1185 #include <cyg/infra/cyg_trac.h>        // tracing macros
1186 #include <cyg/infra/cyg_ass.h>         // assertion macros
1187 #include <cyg/fileio/fileio.h>
1188 #include <cyg/kernel/kapi.h>
1189 #include <cyg/infra/diag.h>
1190
1191 //==========================================================================
1192 // Eventually we want to eXecute In Place from the ROM in a protected
1193 // environment, so we'll need executables to be aligned to a boundary
1194 // suitable for MMU protection. A suitable boundary would be the 4k
1195 // boundary in all the CPU architectures I am currently aware of.
1196
1197 // Forward definitions
1198
1199 // Filesystem operations
1200 static int tftpfs_mount(cyg_fstab_entry *fste, cyg_mtab_entry *mte);
1201 static int tftpfs_umount(cyg_mtab_entry *mte);
1202 static int tftpfs_open(cyg_mtab_entry *mte, cyg_dir dir, const char *name,
1203                 int mode, cyg_file *fte);
1204 static int tftpfs_fo_read(struct CYG_FILE_TAG *fp, struct CYG_UIO_TAG *uio);
1205 static int tftpfs_fo_write(struct CYG_FILE_TAG *fp, struct CYG_UIO_TAG *uio);
1206
1207 // File operations
1208 static int tftpfs_fo_fsync(struct CYG_FILE_TAG *fp, int mode);
1209 static int tftpfs_fo_close(struct CYG_FILE_TAG *fp);
1210 static int tftpfs_fo_lseek(struct CYG_FILE_TAG *fp, off_t *apos, int whence);
1211
1212 //==========================================================================
1213 // Filesystem table entries
1214
1215 // -------------------------------------------------------------------------
1216 // Fstab entry.
1217 // This defines the entry in the filesystem table.
1218 // For simplicity we use _FILESYSTEM synchronization for all accesses since
1219 // we should never block in any filesystem operations.
1220 #if 1
1221 FSTAB_ENTRY(tftpfs_fste, "tftpfs", 0,
1222                 CYG_SYNCMODE_NONE,
1223                 tftpfs_mount,
1224                 tftpfs_umount,
1225                 tftpfs_open,
1226                 (cyg_fsop_unlink *)cyg_fileio_erofs,
1227                 (cyg_fsop_mkdir *)cyg_fileio_erofs,
1228                 (cyg_fsop_rmdir *)cyg_fileio_erofs,
1229                 (cyg_fsop_rename *)cyg_fileio_erofs,
1230                 (cyg_fsop_link *)cyg_fileio_erofs,
1231                 (cyg_fsop_opendir *)cyg_fileio_erofs,
1232                 (cyg_fsop_chdir *)cyg_fileio_erofs,
1233                 (cyg_fsop_stat *)cyg_fileio_erofs,
1234                 (cyg_fsop_getinfo *)cyg_fileio_erofs,
1235                 (cyg_fsop_setinfo *)cyg_fileio_erofs);
1236 #endif
1237
1238 // -------------------------------------------------------------------------
1239 // mtab entry.
1240 // This defines a single ROMFS loaded into ROM at the configured address
1241 //
1242 // MTAB_ENTRY(rom_mte,  // structure name
1243 //              "/rom",         // mount point
1244 //              "romfs",        // FIlesystem type
1245 //              "",             // hardware device
1246 //  (CYG_ADDRWORD) CYGNUM_FS_ROM_BASE_ADDRESS   // Address in ROM
1247 //);
1248
1249
1250 // -------------------------------------------------------------------------
1251 // File operations.
1252 // This set of file operations are used for normal open files.
1253
1254 static cyg_fileops tftpfs_fileops =
1255 { tftpfs_fo_read, tftpfs_fo_write, tftpfs_fo_lseek,
1256                 (cyg_fileop_ioctl *) cyg_fileio_erofs, cyg_fileio_seltrue,
1257                 tftpfs_fo_fsync, tftpfs_fo_close,
1258                 (cyg_fileop_fstat *) cyg_fileio_erofs,
1259                 (cyg_fileop_getinfo *) cyg_fileio_erofs,
1260                 (cyg_fileop_setinfo *) cyg_fileio_erofs, };
1261
1262 // -------------------------------------------------------------------------
1263 // tftpfs_mount()
1264 // Process a mount request. This mainly finds root for the
1265 // filesystem.
1266
1267 static int tftpfs_mount(cyg_fstab_entry *fste, cyg_mtab_entry *mte)
1268 {
1269         return ENOERR;
1270 }
1271
1272 static int tftpfs_umount(cyg_mtab_entry *mte)
1273 {
1274         return ENOERR;
1275 }
1276
1277 struct Tftp
1278 {
1279         int write;
1280         int readFile;
1281         cyg_uint8 *mem;
1282         int actual;
1283         char *server;
1284         int port;
1285         char *file;
1286 };
1287
1288 static void freeTftp(struct Tftp *t)
1289 {
1290         if (t == NULL)
1291                 return;
1292         if (t->mem)
1293                 free(t->mem);
1294         if (t->server)
1295                 free(t->server);
1296         if (t->file)
1297                 free(t->file);
1298         free(t);
1299 }
1300
1301 static const int tftpMaxSize = 8192 * 1024;
1302 static int tftpfs_open(cyg_mtab_entry *mte, cyg_dir dir, const char *name,
1303                 int mode, cyg_file *file)
1304 {
1305         struct Tftp *tftp;
1306         tftp = malloc(sizeof(struct Tftp));
1307         if (tftp == NULL)
1308                 return EMFILE;
1309         memset(tftp, 0, sizeof(struct Tftp));
1310
1311         file->f_flag |= mode & CYG_FILE_MODE_MASK;
1312         file->f_type = CYG_FILE_TYPE_FILE;
1313         file->f_ops = &tftpfs_fileops;
1314         file->f_offset = 0;
1315         file->f_data = 0;
1316         file->f_xops = 0;
1317
1318         tftp->mem = malloc(tftpMaxSize);
1319         if (tftp->mem == NULL)
1320         {
1321                 freeTftp(tftp);
1322                 return EMFILE;
1323         }
1324
1325         char *server = strchr(name, '/');
1326         if (server == NULL)
1327         {
1328                 freeTftp(tftp);
1329                 return EMFILE;
1330         }
1331
1332         tftp->server = malloc(server - name + 1);
1333         if (tftp->server == NULL)
1334         {
1335                 freeTftp(tftp);
1336                 return EMFILE;
1337         }
1338         strncpy(tftp->server, name, server - name);
1339         tftp->server[server - name] = 0;
1340
1341         tftp->port = 0; /* default port 69 */
1342         char *port;
1343         port = strchr(tftp->server, ':');
1344         if (port != NULL)
1345         {
1346                 tftp->port = atoi(port + 1);
1347                 *port = 0;
1348         }
1349
1350         tftp->file = strdup(server + 1);
1351         if (tftp->file == NULL)
1352         {
1353                 freeTftp(tftp);
1354                 return EMFILE;
1355         }
1356
1357         file->f_data = (CYG_ADDRWORD) tftp;
1358
1359         return ENOERR;
1360 }
1361
1362 static int fetchTftp(struct Tftp *tftp)
1363 {
1364         if (!tftp->readFile)
1365         {
1366                 int err;
1367                 tftp->actual = tftp_client_get(tftp->file, tftp->server, tftp->port, tftp->mem,
1368                                 tftpMaxSize, TFTP_OCTET, &err);
1369
1370                 if (tftp->actual < 0)
1371                 {
1372                         return EMFILE;
1373                 }
1374                 tftp->readFile = 1;
1375         }
1376         return ENOERR;
1377 }
1378
1379 // -------------------------------------------------------------------------
1380 // tftpfs_fo_write()
1381 // Read data from file.
1382
1383 static int tftpfs_fo_read(struct CYG_FILE_TAG *fp, struct CYG_UIO_TAG *uio)
1384 {
1385         struct Tftp *tftp = (struct Tftp *) fp->f_data;
1386
1387         if (fetchTftp(tftp) != ENOERR)
1388                 return EMFILE;
1389
1390         int i;
1391         off_t pos = fp->f_offset;
1392         int resid = 0;
1393         for (i = 0; i < uio->uio_iovcnt; i++)
1394         {
1395                 cyg_iovec *iov = &uio->uio_iov[i];
1396                 char *buf = (char *) iov->iov_base;
1397                 off_t len = iov->iov_len;
1398
1399                 if (len + pos > tftp->actual)
1400                 {
1401                         len = tftp->actual - pos;
1402                 }
1403                 resid += iov->iov_len - len;
1404
1405                 memcpy(buf, tftp->mem + pos, len);
1406                 pos += len;
1407
1408         }
1409         uio->uio_resid = resid;
1410         fp->f_offset = pos;
1411
1412         return ENOERR;
1413 }
1414
1415 static int tftpfs_fo_write(struct CYG_FILE_TAG *fp, struct CYG_UIO_TAG *uio)
1416 {
1417         struct Tftp *tftp = (struct Tftp *) fp->f_data;
1418
1419         int i;
1420         off_t pos = fp->f_offset;
1421         int resid = 0;
1422         for (i = 0; i < uio->uio_iovcnt; i++)
1423         {
1424                 cyg_iovec *iov = &uio->uio_iov[i];
1425                 char *buf = (char *) iov->iov_base;
1426                 off_t len = iov->iov_len;
1427
1428                 if (len + pos > tftpMaxSize)
1429                 {
1430                         len = tftpMaxSize - pos;
1431                 }
1432                 resid += iov->iov_len - len;
1433
1434                 memcpy(tftp->mem + pos, buf, len);
1435                 pos += len;
1436
1437         }
1438         uio->uio_resid = resid;
1439         fp->f_offset = pos;
1440
1441         tftp->write = 1;
1442
1443         return ENOERR;
1444 }
1445
1446 static int tftpfs_fo_fsync(struct CYG_FILE_TAG *fp, int mode)
1447 {
1448         int error = ENOERR;
1449         return error;
1450 }
1451
1452 // -------------------------------------------------------------------------
1453 // romfs_fo_close()
1454 // Close a file. We just clear out the data pointer.
1455
1456 static int tftpfs_fo_close(struct CYG_FILE_TAG *fp)
1457 {
1458         struct Tftp *tftp = (struct Tftp *) fp->f_data;
1459         int error = ENOERR;
1460
1461         if (tftp->write)
1462         {
1463                 tftp_client_put(tftp->file, tftp->server, 0, tftp->mem, fp->f_offset,
1464                                 TFTP_OCTET, &error);
1465         }
1466
1467         freeTftp(tftp);
1468         fp->f_data = 0;
1469         return error;
1470 }
1471
1472 // -------------------------------------------------------------------------
1473 // romfs_fo_lseek()
1474 // Seek to a new file position.
1475
1476 static int tftpfs_fo_lseek(struct CYG_FILE_TAG *fp, off_t *apos, int whence)
1477 {
1478         struct Tftp *tftp = (struct Tftp *) fp->f_data;
1479         off_t pos = *apos;
1480
1481         if (fetchTftp(tftp) != ENOERR)
1482                 return EMFILE;
1483
1484         switch (whence)
1485         {
1486         case SEEK_SET:
1487                 // Pos is already where we want to be.
1488                 break;
1489
1490         case SEEK_CUR:
1491                 // Add pos to current offset.
1492                 pos += fp->f_offset;
1493                 break;
1494
1495         case SEEK_END:
1496                 // Add pos to file size.
1497                 pos += tftp->actual;
1498                 break;
1499
1500         default:
1501                 return EINVAL;
1502         }
1503
1504         // Check that pos is still within current file size, or at the
1505         // very end.
1506         if (pos < 0 || pos > tftp->actual)
1507                 return EINVAL;
1508
1509         // All OK, set fp offset and return new position.
1510         *apos = fp->f_offset = pos;
1511
1512         return ENOERR;
1513 }
1514
1515 void usleep(int us)
1516 {
1517         if (us > 10000)
1518                 cyg_thread_delay(us / 10000 + 1);
1519         else
1520                 HAL_DELAY_US(us);
1521 }
1522
1523 // Chunked version.
1524 cyg_int32 show_log_entry(CYG_HTTPD_STATE *phttpstate)
1525 {
1526         cyg_httpd_start_chunked("text");
1527         if (logCount >= logSize)
1528         {
1529                 cyg_httpd_write_chunked(logBuffer + logCount % logSize, logSize
1530                                 - logCount % logSize);
1531         }
1532         cyg_httpd_write_chunked(logBuffer, writePtr);
1533         cyg_httpd_end_chunked();
1534         return -1;
1535 }
1536
1537 CYG_HTTPD_HANDLER_TABLE_ENTRY(show_log, "/ram/log", show_log_entry);
1538
1539 // Filesystem operations
1540 static int logfs_mount(cyg_fstab_entry *fste, cyg_mtab_entry *mte);
1541 static int logfs_umount(cyg_mtab_entry *mte);
1542 static int logfs_open(cyg_mtab_entry *mte, cyg_dir dir, const char *name,
1543                 int mode, cyg_file *fte);
1544 static int logfs_fo_write(struct CYG_FILE_TAG *fp, struct CYG_UIO_TAG *uio);
1545
1546 // File operations
1547 static int logfs_fo_fsync(struct CYG_FILE_TAG *fp, int mode);
1548 static int logfs_fo_close(struct CYG_FILE_TAG *fp);
1549
1550 #include <cyg/io/devtab.h>
1551
1552 //==========================================================================
1553 // Filesystem table entries
1554
1555 // -------------------------------------------------------------------------
1556 // Fstab entry.
1557 // This defines the entry in the filesystem table.
1558 // For simplicity we use _FILESYSTEM synchronization for all accesses since
1559 // we should never block in any filesystem operations.
1560 FSTAB_ENTRY(logfs_fste, "logfs", 0,
1561                 CYG_SYNCMODE_FILE_FILESYSTEM | CYG_SYNCMODE_IO_FILESYSTEM,
1562                 logfs_mount,
1563                 logfs_umount,
1564                 logfs_open,
1565                 (cyg_fsop_unlink *)cyg_fileio_erofs,
1566                 (cyg_fsop_mkdir *)cyg_fileio_erofs,
1567                 (cyg_fsop_rmdir *)cyg_fileio_erofs,
1568                 (cyg_fsop_rename *)cyg_fileio_erofs,
1569                 (cyg_fsop_link *)cyg_fileio_erofs,
1570                 (cyg_fsop_opendir *)cyg_fileio_erofs,
1571                 (cyg_fsop_chdir *)cyg_fileio_erofs,
1572                 (cyg_fsop_stat *)cyg_fileio_erofs,
1573                 (cyg_fsop_getinfo *)cyg_fileio_erofs,
1574                 (cyg_fsop_setinfo *)cyg_fileio_erofs);
1575
1576 // -------------------------------------------------------------------------
1577 // File operations.
1578 // This set of file operations are used for normal open files.
1579
1580 static cyg_fileops logfs_fileops =
1581 { (cyg_fileop_read *) cyg_fileio_erofs, (cyg_fileop_write *) logfs_fo_write,
1582                 (cyg_fileop_lseek *) cyg_fileio_erofs,
1583                 (cyg_fileop_ioctl *) cyg_fileio_erofs, cyg_fileio_seltrue,
1584                 logfs_fo_fsync, logfs_fo_close, (cyg_fileop_fstat *) cyg_fileio_erofs,
1585                 (cyg_fileop_getinfo *) cyg_fileio_erofs,
1586                 (cyg_fileop_setinfo *) cyg_fileio_erofs, };
1587
1588 // -------------------------------------------------------------------------
1589 // logfs_mount()
1590 // Process a mount request. This mainly finds root for the
1591 // filesystem.
1592
1593 static int logfs_mount(cyg_fstab_entry *fste, cyg_mtab_entry *mte)
1594 {
1595         return ENOERR;
1596 }
1597
1598 static int logfs_umount(cyg_mtab_entry *mte)
1599 {
1600         return ENOERR;
1601 }
1602
1603 static int logfs_open(cyg_mtab_entry *mte, cyg_dir dir, const char *name,
1604                 int mode, cyg_file *file)
1605 {
1606         file->f_flag |= mode & CYG_FILE_MODE_MASK;
1607         file->f_type = CYG_FILE_TYPE_FILE;
1608         file->f_ops = &logfs_fileops;
1609         file->f_offset = 0;
1610         file->f_data = 0;
1611         file->f_xops = 0;
1612         return ENOERR;
1613 }
1614
1615 // -------------------------------------------------------------------------
1616 // logfs_fo_write()
1617 // Write data to file.
1618
1619 static int logfs_fo_write(struct CYG_FILE_TAG *fp, struct CYG_UIO_TAG *uio)
1620 {
1621         int i;
1622         for (i = 0; i < uio->uio_iovcnt; i++)
1623         {
1624                 cyg_iovec *iov = &uio->uio_iov[i];
1625                 char *buf = (char *) iov->iov_base;
1626                 off_t len = iov->iov_len;
1627
1628                 diag_write(buf, len);
1629         }
1630         uio->uio_resid = 0;
1631
1632         return ENOERR;
1633 }
1634 static int logfs_fo_fsync(struct CYG_FILE_TAG *fp, int mode)
1635 {
1636         return ENOERR;
1637 }
1638
1639 // -------------------------------------------------------------------------
1640 // romfs_fo_close()
1641 // Close a file. We just clear out the data pointer.
1642
1643 static int logfs_fo_close(struct CYG_FILE_TAG *fp)
1644 {
1645         return ENOERR;
1646 }
1647
1648 int loadFile(const char *fileName, void **data, int *len);
1649
1650 /* boolean parameter stored on config */
1651 int boolParam(char *var)
1652 {
1653         bool result = false;
1654         char *name = alloc_printf("%s/%s", zylin_config_dir, var);
1655         if (name == NULL)
1656                 return result;
1657
1658         void *data;
1659         int len;
1660         if (loadFile(name, &data, &len) == ERROR_OK)
1661         {
1662                 if (len > 1)
1663                         len = 1;
1664                 result = strncmp((char *) data, "1", len) == 0;
1665                 free(data);
1666         }
1667         free(name);
1668         return result;
1669 }
1670