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1 /***************************************************************************
2  *   Copyright (C) 2007-2008 by Ã˜yvind Harboe                              *
3  *                                                                         *
4  *   This program is free software; you can redistribute it and/or modify  *
5  *   it under the terms of the GNU General Public License as published by  *
6  *   the Free Software Foundation; either version 2 of the License, or     *
7  *   (at your option) any later version.                                   *
8  *                                                                         *
9  *   This program is distributed in the hope that it will be useful,       *
10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
12  *   GNU General Public License for more details.                          *
13  *                                                                         *
14  *   You should have received a copy of the GNU General Public License     *
15  *   along with this program; if not, write to the                         *
16  *   Free Software Foundation, Inc.,                                       *
17  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
18  ***************************************************************************/
19
20 #ifdef HAVE_CONFIG_H
21 #include "config.h"
22 #endif
23
24 #include "log.h"
25 #include "types.h"
26 #include "jtag.h"
27 #include "configuration.h"
28 #include "xsvf.h"
29 #include "svf.h"
30 #include "target.h"
31 #include "flash.h"
32 #include "nand.h"
33 #include "pld.h"
34
35 #include "command.h"
36 #include "server.h"
37 #include "telnet_server.h"
38 #include "gdb_server.h"
39
40 #include <time_support.h>
41 #include <sys/time.h>
42 #include <stdio.h>
43 #include <stdlib.h>
44 #include <string.h>
45 #include <unistd.h>
46 #include <errno.h>
47
48 #include <cyg/io/flash.h>
49 #include <pkgconf/fs_jffs2.h>   // Address of JFFS2
50 #include <network.h>
51
52 #include <fcntl.h>
53 #include <sys/stat.h>
54 #include <cyg/fileio/fileio.h>
55 #include <dirent.h>
56 #include <cyg/athttpd/http.h>
57 #include <cyg/athttpd/socket.h>
58 #include <cyg/athttpd/handler.h>
59 #include <cyg/athttpd/cgi.h>
60 #include <cyg/athttpd/forms.h>
61 #include <cyg/discover/discover.h>
62 #include <cyg/hal/hal_diag.h>
63 #include <cyg/kernel/kapi.h>
64 #include <cyg/io/serialio.h>
65 #include <cyg/io/io.h>
66 #include <netinet/tcp.h>
67 #include "rom.h"
68 #include <sys/ioctl.h>
69 #include <sys/socket.h>
70 #include <netinet/in.h>
71 #include <net/if.h>
72 #include <arpa/inet.h>
73 #include <sys/types.h>
74 #include <sys/socket.h>
75 #include <netdb.h>
76 #include <netinet/in.h>
77 #include <unistd.h>
78 #include <arpa/inet.h>
79 #include <stdio.h>
80 #include <ifaddrs.h>
81 #include <string.h>
82
83 #include <unistd.h>
84 #include <stdio.h>
85
86
87 #define MAX_IFS 64
88 #if defined(CYGPKG_NET_FREEBSD_STACK)
89 #include <tftp_support.h>
90 /* posix compatibility broken*/
91 struct tftpd_fileops fileops =
92 {
93         (int (*)(const char *, int))open,
94         close,
95         (int (*)(int, const void *, int))write,
96         (int (*)(int, void *, int))read
97 };
98
99 #endif
100
101
102 void diag_write(char *buf, int len)
103 {
104         int j;
105         for (j = 0; j < len; j++)
106         {
107                 diag_printf("%c", buf[j]);
108         }
109 }
110
111 static bool serialLog = true;
112 static bool writeLog = true;
113
114 char hwaddr[512];
115
116
117 extern struct flash_driver *flash_drivers[];
118 extern target_type_t *target_types[];
119
120 #ifdef CYGPKG_PROFILE_GPROF
121 #include <cyg/profile/profile.h>
122
123 extern char _stext, _etext; // Defined by the linker
124
125 static char *start_of_code=&_stext;
126 static char *end_of_code=&_etext;
127
128 void start_profile(void)
129 {
130         // This starts up the system-wide profiling, gathering
131         // profile information on all of the code, with a 16 byte
132         // "bucket" size, at a rate of 100us/profile hit.
133         // Note: a bucket size of 16 will give pretty good function
134         //       resolution.  Much smaller and the buffer becomes
135         //       much too large for very little gain.
136         // Note: a timer period of 100us is also a reasonable
137         //       compromise.  Any smaller and the overhead of
138         //       handling the timter (profile) interrupt could
139         //       swamp the system.  A fast processor might get
140         //       by with a smaller value, but a slow one could
141         //       even be swamped by this value.  If the value is
142         //       too large, the usefulness of the profile is reduced.
143
144         // no more interrupts than 1/10ms.
145         //profile_on((void *)0, (void *)0x40000, 16, 10000); // SRAM
146         //      profile_on(0, &_etext, 16, 10000); // SRAM & DRAM
147         profile_on(start_of_code, end_of_code, 16, 10000); // Nios DRAM
148 }
149 #endif
150
151 static FILE *log;
152
153 static char reboot_stack[2048];
154
155 static void zylinjtag_reboot(cyg_addrword_t data)
156 {
157         serialLog = true;
158         diag_printf("Rebooting in 500 ticks..\n");
159         cyg_thread_delay(500);
160         diag_printf("Unmounting /config..\n");
161         umount("/config");
162         diag_printf("Rebooting..\n");
163         HAL_PLATFORM_RESET();
164 }
165 static cyg_thread zylinjtag_thread_object;
166 static cyg_handle_t zylinjtag_thread_handle;
167
168 void reboot(void)
169 {
170         cyg_thread_create(1, zylinjtag_reboot, (cyg_addrword_t) 0, "reboot Thread",
171                         (void *) reboot_stack, sizeof(reboot_stack),
172                         &zylinjtag_thread_handle, &zylinjtag_thread_object);
173         cyg_thread_resume(zylinjtag_thread_handle);
174 }
175
176 static char zylinjtag_reboot_port_stack[2048];
177 static cyg_thread zylinjtag_reboot_port_thread_object;
178 static cyg_handle_t zylinjtag_reboot_port_thread_handle;
179
180 static void zylinjtag_reboot_port_task(cyg_addrword_t data)
181 {
182         int so_reuseaddr_option = 1;
183
184         int fd;
185         if ((fd = socket(AF_INET, SOCK_STREAM, 0)) == -1)
186         {
187                 LOG_ERROR("error creating socket: %s", strerror(errno));
188                 exit(-1);
189         }
190
191         setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (void*) &so_reuseaddr_option,
192                         sizeof(int));
193
194         struct sockaddr_in sin;
195         unsigned int address_size;
196         address_size = sizeof(sin);
197         memset(&sin, 0, sizeof(sin));
198         sin.sin_family = AF_INET;
199         sin.sin_addr.s_addr = INADDR_ANY;
200         sin.sin_port = htons(1234);
201
202         if (bind(fd, (struct sockaddr *) &sin, sizeof(sin)) == -1)
203         {
204                 LOG_ERROR("couldn't bind to socket: %s", strerror(errno));
205                 exit(-1);
206         }
207
208         if (listen(fd, 1) == -1)
209         {
210                 LOG_ERROR("couldn't listen on socket: %s", strerror(errno));
211                 exit(-1);
212         }
213         //      socket_nonblock(fd);
214
215
216         accept(fd, (struct sockaddr *) &sin, &address_size);
217
218         diag_printf("Got reboot signal on port 1234");
219
220         reboot();
221
222 }
223
224 void reboot_port(void)
225 {
226         cyg_thread_create(1, zylinjtag_reboot_port_task, (cyg_addrword_t) 0, "wait for reboot signal on port 1234",
227                         (void *) zylinjtag_reboot_port_stack, sizeof(zylinjtag_reboot_port_stack),
228                         &zylinjtag_reboot_port_thread_handle, &zylinjtag_reboot_port_thread_object);
229         cyg_thread_resume(zylinjtag_reboot_port_thread_handle);
230 }
231
232 int configuration_output_handler(struct command_context_s *context,
233                 const char* line)
234 {
235         diag_printf("%s", line);
236
237         return ERROR_OK;
238 }
239
240 int zy1000_configuration_output_handler_log(struct command_context_s *context,
241                 const char* line)
242 {
243         LOG_USER_N("%s", line);
244
245         return ERROR_OK;
246 }
247
248 #ifdef CYGPKG_PROFILE_GPROF
249
250 int eCosBoard_handle_eCosBoard_profile_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
251 {
252         command_print(cmd_ctx, "Profiling started");
253         start_profile();
254         return ERROR_OK;
255 }
256
257 #endif
258
259 externC void phi_init_all_network_interfaces(void);
260
261 command_context_t *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         interp = httpstate.jim_interp;
504
505         Jim_CreateCommand(httpstate.jim_interp, "log", zylinjtag_Jim_Command_log,
506                         NULL, NULL);
507         Jim_CreateCommand(httpstate.jim_interp, "zy1000_reboot",
508                         zylinjtag_Jim_Command_reboot, NULL, NULL);
509         Jim_CreateCommand(httpstate.jim_interp, "threads",
510                         zylinjtag_Jim_Command_threads, NULL, NULL);
511         Jim_CreateCommand(httpstate.jim_interp, "format_jffs2",
512                         zylinjtag_Jim_Command_format_jffs2, NULL, NULL);
513
514         cyg_httpd_start();
515
516         webRunning = true;
517
518         diag_printf("Web server running\n");
519
520         int s;
521         struct ifreq ifr;
522         s = socket(AF_INET, SOCK_DGRAM, 0);
523         if (s >= 0)
524         {
525                 strcpy(ifr.ifr_name, "eth0");
526                 int res;
527                 res = ioctl(s, SIOCGIFHWADDR, &ifr);
528                 close(s);
529
530                 if (res < 0)
531                 {
532                         diag_printf("Can't obtain MAC address\n");
533                         reboot();
534                 }
535         }
536
537         sprintf(hwaddr, "%02x:%02x:%02x:%02x:%02x:%02x",
538                         (int) ((unsigned char *) &ifr.ifr_hwaddr.sa_data)[0],
539                         (int) ((unsigned char *) &ifr.ifr_hwaddr.sa_data)[1],
540                         (int) ((unsigned char *) &ifr.ifr_hwaddr.sa_data)[2],
541                         (int) ((unsigned char *) &ifr.ifr_hwaddr.sa_data)[3],
542                         (int) ((unsigned char *) &ifr.ifr_hwaddr.sa_data)[4],
543                         (int) ((unsigned char *) &ifr.ifr_hwaddr.sa_data)[5]);
544
545         discover_message
546                         = alloc_printf("ZY1000 Zylin JTAG debugger MAC %s", hwaddr);
547
548         discover_launch();
549 }
550
551 static void print_exception_handler(cyg_addrword_t data, cyg_code_t exception,
552                 cyg_addrword_t info)
553 {
554         writeLog = false;
555         serialLog = true;
556         char *infoStr = "unknown";
557         switch (exception)
558         {
559 #ifdef CYGNUM_HAL_VECTOR_UNDEF_INSTRUCTION
560         case CYGNUM_HAL_VECTOR_UNDEF_INSTRUCTION:
561         infoStr = "undefined instruction";
562         break;
563         case CYGNUM_HAL_VECTOR_SOFTWARE_INTERRUPT:
564         infoStr = "software interrupt";
565         break;
566         case CYGNUM_HAL_VECTOR_ABORT_PREFETCH:
567         infoStr = "abort prefetch";
568         break;
569         case CYGNUM_HAL_VECTOR_ABORT_DATA:
570         infoStr = "abort data";
571         break;
572 #endif
573         default:
574                 break;
575         }
576
577         diag_printf("Exception: %08x(%s) %08x\n", exception, infoStr, info);
578
579         diag_printf("Dumping log\n---\n");
580         if (logCount >= logSize)
581         {
582                 diag_write(logBuffer + logCount % logSize, logSize - logCount % logSize);
583         }
584         diag_write(logBuffer, writePtr);
585
586         diag_printf("---\nLogdump complete.\n");
587         diag_printf("Exception: %08x(%s) %08x\n", exception, infoStr, info);
588         diag_printf("\n---\nRebooting\n");
589         HAL_PLATFORM_RESET();
590
591 }
592
593 #ifdef CYGNUM_HAL_VECTOR_UNDEF_INSTRUCTION
594 static void setHandler(cyg_code_t exception)
595 {
596         cyg_exception_handler_t *old_handler;
597         cyg_addrword_t old_data;
598
599         cyg_exception_set_handler(exception, print_exception_handler, 0,
600                         &old_handler, &old_data);
601 }
602 #endif
603
604 static cyg_thread zylinjtag_uart_thread_object;
605 static cyg_handle_t zylinjtag_uart_thread_handle;
606 static char uart_stack[4096];
607
608 static char forwardBuffer[1024]; // NB! must be smaller than a TCP/IP packet!!!!!
609 static char backwardBuffer[1024];
610
611 void setNoDelay(int session, int flag)
612 {
613 #if 1
614         // This decreases latency dramatically for e.g. GDB load which
615         // does not have a sliding window protocol
616         //
617         // Can cause *lots* of TCP/IP packets to be sent and it would have
618         // to be enabled/disabled on the fly to avoid the CPU being
619         // overloaded...
620         setsockopt(session, /* socket affected */
621         IPPROTO_TCP, /* set option at TCP level */
622         TCP_NODELAY, /* name of option */
623         (char *) &flag, /* the cast is historical
624          cruft */
625         sizeof(int)); /* length of option value */
626 #endif
627 }
628
629 #define TEST_TCPIP() 0
630
631 #if TEST_TCPIP
632 struct
633 {
634         int req;
635         int actual;
636         int req2;
637         int actual2;
638 } tcpipSent[512 * 1024];
639 int cur;
640 #endif
641
642 static void zylinjtag_uart(cyg_addrword_t data)
643 {
644         int so_reuseaddr_option = 1;
645
646         int fd;
647         if ((fd = socket(AF_INET, SOCK_STREAM, 0)) == -1)
648         {
649                 LOG_ERROR("error creating socket: %s", strerror(errno));
650                 exit(-1);
651         }
652
653         setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (void*) &so_reuseaddr_option,
654                         sizeof(int));
655
656         struct sockaddr_in sin;
657         unsigned int address_size;
658         address_size = sizeof(sin);
659         memset(&sin, 0, sizeof(sin));
660         sin.sin_family = AF_INET;
661         sin.sin_addr.s_addr = INADDR_ANY;
662         sin.sin_port = htons(5555);
663
664         if (bind(fd, (struct sockaddr *) &sin, sizeof(sin)) == -1)
665         {
666                 LOG_ERROR("couldn't bind to socket: %s", strerror(errno));
667                 exit(-1);
668         }
669
670         if (listen(fd, 1) == -1)
671         {
672                 LOG_ERROR("couldn't listen on socket: %s", strerror(errno));
673                 exit(-1);
674         }
675         //      socket_nonblock(fd);
676
677
678         for (;;)
679         {
680                 int session = accept(fd, (struct sockaddr *) &sin, &address_size);
681                 if (session < 0)
682                 {
683                         continue;
684                 }
685
686                 setNoDelay(session, 1);
687                 int oldopts = fcntl(session, F_GETFL, 0);
688                 fcntl(session, F_SETFL, oldopts | O_NONBLOCK); //
689
690                 int serHandle = open("/dev/ser0", O_RDWR | O_NONBLOCK);
691                 if (serHandle < 0)
692                 {
693                         close(session);
694                         continue;
695                 }
696
697 #ifdef CYGPKG_PROFILE_GPROF
698                 start_profile();
699 #endif
700                 size_t actual = 0;
701                 size_t actual2 = 0;
702                 size_t pos, pos2;
703                 pos = 0;
704                 pos2 = 0;
705 #if TEST_TCPIP
706                 cur = 0;
707 #endif
708                 for (;;)
709                 {
710                         fd_set write_fds;
711                         fd_set read_fds;
712                         FD_ZERO(&write_fds);
713                         FD_ZERO(&read_fds);
714                         int fd_max = -1;
715                         FD_SET(session, &read_fds);
716                         fd_max = session;
717                         FD_SET(serHandle, &read_fds);
718                         if (serHandle > fd_max)
719                         {
720                                 fd_max = serHandle;
721                         }
722                         /* Wait... */
723
724                         cyg_thread_delay(5); // 50ms fixed delay to wait for data to be sent/received
725                         if ((actual == 0) && (actual2 == 0))
726                         {
727                                 int retval = select(fd_max + 1, &read_fds, NULL, NULL, NULL);
728                                 if (retval <= 0)
729                                 {
730                                         break;
731                                 }
732                         }
733
734                         if (actual2 <= 0)
735                         {
736                                 memset(backwardBuffer, 's', sizeof(backwardBuffer));
737                                 int t;
738                                 t = read(serHandle, backwardBuffer,
739                                                 sizeof(backwardBuffer));
740                                 actual2 = t;
741                                 if (t < 0)
742                                 {
743                                         if (errno != EAGAIN)
744                                         {
745                                                 goto closeSession;
746                                         }
747                                         actual2 = 0;
748                                 }
749                                 pos2 = 0;
750                         }
751
752                         size_t y = 0;
753                         if (actual2 > 0)
754                         {
755                                 int written = write(session, backwardBuffer + pos2, actual2);
756                                 if (written <= 0)
757                                         goto closeSession;
758                                 actual2 -= written;
759                                 pos2 += written;
760                                 y = written;
761                         }
762
763                         if (FD_ISSET(session, &read_fds)
764                                         && (sizeof(forwardBuffer) > actual))
765                         {
766                                 // NB! Here it is important that we empty the TCP/IP read buffer
767                                 // to make transmission tick right
768                                 memmove(forwardBuffer, forwardBuffer + pos, actual);
769                                 pos = 0;
770                                 int t;
771                                 // this will block if there is no data at all
772                                 t = read_socket(session, forwardBuffer + actual,
773                                                 sizeof(forwardBuffer) - actual);
774                                 if (t <= 0)
775                                 {
776                                         goto closeSession;
777                                 }
778                                 actual += t;
779                         }
780
781                         int y2 = 0;
782                         if (actual > 0)
783                         {
784                                 /* Do not put things into the serial buffer if it has something to send
785                                  * as that can cause a single byte to be sent at the time.
786                                  *
787                                  *
788                                  */
789                                 int written = write(serHandle, forwardBuffer + pos, actual);
790                                 if (written < 0)
791                                 {
792                                         if (errno != EAGAIN)
793                                         {
794                                                 goto closeSession;
795                                         }
796                                         // The serial buffer is full
797                                         written = 0;
798                                 }
799                                 else
800                                 {
801                                         actual -= written;
802                                         pos += written;
803                                 }
804                                 y2 = written;
805                         }
806 #if TEST_TCPIP
807                         if (cur < 1024)
808                         {
809                                 tcpipSent[cur].req = x;
810                                 tcpipSent[cur].actual = y;
811                                 tcpipSent[cur].req2 = x2;
812                                 tcpipSent[cur].actual2 = y2;
813                                 cur++;
814                         }
815 #endif
816                 }
817                 closeSession: close(session);
818                 close(serHandle);
819
820 #if TEST_TCPIP
821                 int i;
822                 for (i = 0; i < 1024; i++)
823                 {
824                         diag_printf("%d %d %d %d\n", tcpipSent[i].req, tcpipSent[i].actual,
825                                         tcpipSent[i].req2, tcpipSent[i].actual2);
826
827                 }
828 #endif
829         }
830         close(fd);
831
832 }
833
834 void startUart(void)
835 {
836         cyg_thread_create(1, zylinjtag_uart, (cyg_addrword_t) 0, "uart thread",
837                         (void *) uart_stack, sizeof(uart_stack),
838                         &zylinjtag_uart_thread_handle, &zylinjtag_uart_thread_object);
839         cyg_thread_set_priority(zylinjtag_uart_thread_handle, 1); // low priority as it sits in a busy loop
840         cyg_thread_resume(zylinjtag_uart_thread_handle);
841 }
842
843 int handle_uart_command(struct command_context_s *cmd_ctx, char *cmd,
844                 char **args, int argc)
845 {
846         static int current_baud = 38400;
847         if (argc == 0)
848         {
849                 command_print(cmd_ctx, "%d", current_baud);
850                 return ERROR_OK;
851         }
852         else if (argc != 1)
853         {
854                 return ERROR_INVALID_ARGUMENTS;
855         }
856
857         current_baud = atol(args[0]);
858
859         int baud;
860         switch (current_baud)
861         {
862         case 9600:
863                 baud = CYGNUM_SERIAL_BAUD_9600;
864                 break;
865         case 19200:
866                 baud = CYGNUM_SERIAL_BAUD_19200;
867                 break;
868         case 38400:
869                 baud = CYGNUM_SERIAL_BAUD_38400;
870                 break;
871         case 57600:
872                 baud = CYGNUM_SERIAL_BAUD_57600;
873                 break;
874         case 115200:
875                 baud = CYGNUM_SERIAL_BAUD_115200;
876                 break;
877         case 230400:
878                 baud = CYGNUM_SERIAL_BAUD_230400;
879                 break;
880         default:
881                 command_print(cmd_ctx, "unsupported baudrate");
882                 return ERROR_INVALID_ARGUMENTS;
883         }
884
885         cyg_serial_info_t buf;
886         cyg_uint32 len = 1;
887         //get existing serial configuration
888         len = sizeof(cyg_serial_info_t);
889         int err;
890         cyg_io_handle_t serial_handle;
891
892         err = cyg_io_lookup("/dev/ser0", &serial_handle);
893         if (err != ENOERR)
894         {
895                 LOG_ERROR("/dev/ser0 not found\n");
896                 return ERROR_FAIL;
897         }
898
899         err = cyg_io_get_config(serial_handle,
900                         CYG_IO_GET_CONFIG_SERIAL_OUTPUT_DRAIN, &buf, &len);
901         err = cyg_io_get_config(serial_handle, CYG_IO_GET_CONFIG_SERIAL_INFO, &buf,
902                         &len);
903         if (err != ENOERR)
904         {
905                 command_print(cmd_ctx, "Failed to get serial port settings %d", err);
906                 return ERROR_OK;
907         }
908         buf.baud = baud;
909
910         err = cyg_io_set_config(serial_handle, CYG_IO_SET_CONFIG_SERIAL_INFO, &buf,
911                         &len);
912         if (err != ENOERR)
913         {
914                 command_print(cmd_ctx, "Failed to set serial port settings %d", err);
915                 return ERROR_OK;
916         }
917
918         return ERROR_OK;
919 }
920
921 bool logAllToSerial = false;
922
923
924 int boolParam(char *var);
925
926
927 command_context_t *setup_command_handler(void);
928
929 static const char *zylin_config_dir="/config/settings";
930
931 static int add_default_dirs(void)
932 {
933         add_script_search_dir(zylin_config_dir);
934         add_script_search_dir("/rom/lib/openocd");
935         add_script_search_dir("/rom");
936         return ERROR_OK;
937 }
938
939 int ioutil_init(struct command_context_s *cmd_ctx);
940
941 int main(int argc, char *argv[])
942 {
943         /* ramblockdevice will be the same address every time. The deflate app uses a buffer 16mBytes out, so we
944          * need to allocate towards the end of the heap.  */
945
946 #ifdef CYGNUM_HAL_VECTOR_UNDEF_INSTRUCTION
947         setHandler(CYGNUM_HAL_VECTOR_UNDEF_INSTRUCTION);
948         setHandler(CYGNUM_HAL_VECTOR_ABORT_PREFETCH);
949         setHandler(CYGNUM_HAL_VECTOR_ABORT_DATA);
950 #endif
951
952         int err;
953
954         atexit(keep_webserver);
955
956         diag_init_putc(_zylinjtag_diag_write_char);
957         // We want this in the log.
958         diag_printf("Zylin ZY1000.\n");
959
960         err = mount("", "/ram", "ramfs");
961         if (err < 0)
962         {
963                 diag_printf("unable to mount ramfs\n");
964         }
965         chdir("/ram");
966
967         char address[16];
968         sprintf(address, "%p", &filedata[0]);
969         err = mount(address, "/rom", "romfs");
970         if (err < 0)
971         {
972                 diag_printf("unable to mount /rom\n");
973         }
974
975         err = mount("", "/log", "logfs");
976         if (err < 0)
977         {
978                 diag_printf("unable to mount logfs\n");
979         }
980
981         err = mount("", "/tftp", "tftpfs");
982         if (err < 0)
983         {
984                 diag_printf("unable to mount logfs\n");
985         }
986
987         log = fopen("/log/log", "w");
988         if (log == NULL)
989         {
990                 diag_printf("Could not open log file /ram/log\n");
991                 exit(-1);
992         }
993
994
995         copydir("/rom", "/ram/cgi");
996
997         err = mount("/dev/flash1", "/config", "jffs2");
998         if (err < 0)
999         {
1000                 diag_printf("unable to mount jffs2, falling back to ram disk..\n");
1001                 err = mount("", "/config", "ramfs");
1002                 if (err < 0)
1003                 {
1004                         diag_printf("unable to mount /config as ramdisk.\n");
1005                         reboot();
1006                 }
1007         }
1008         else
1009         {
1010                 /* are we using a ram disk instead of a flash disk? This is used
1011                  * for ZY1000 live demo...
1012                  *
1013                  * copy over flash disk to ram block device
1014                  */
1015                 if (boolParam("ramdisk"))
1016                 {
1017                         diag_printf("Unmounting /config from flash and using ram instead\n");
1018                         err = umount("/config");
1019                         if (err < 0)
1020                         {
1021                                 diag_printf("unable to unmount jffs\n");
1022                                 reboot();
1023                         }
1024
1025                         err = mount("/dev/flash1", "/config2", "jffs2");
1026                         if (err < 0)
1027                         {
1028                                 diag_printf("unable to mount jffs\n");
1029                                 reboot();
1030                         }
1031
1032                         err = mount("", "/config", "ramfs");
1033                         if (err < 0)
1034                         {
1035                                 diag_printf("unable to mount ram block device\n");
1036                                 reboot();
1037                         }
1038
1039                         //              copydir("/config2", "/config");
1040                         copyfile("/config2/ip", "/config/ip");
1041                         copydir("/config2/settings", "/config/settings");
1042
1043                         umount("/config2");
1044                 }
1045         }
1046
1047         mkdir(zylin_config_dir, 0777);
1048         char *dirname = alloc_printf("%s/target", zylin_config_dir);
1049         mkdir(dirname, 0777);
1050         free(dirname);
1051         dirname = alloc_printf("%s/board", zylin_config_dir);
1052         mkdir(dirname, 0777);
1053         free(dirname);
1054         dirname = alloc_printf("%s/event", zylin_config_dir);
1055         mkdir(dirname, 0777);
1056         free(dirname);
1057
1058         logAllToSerial = boolParam("logserial");
1059
1060         // We need the network & web server in case there is something wrong with
1061         // the config files that invoke exit()
1062         zylinjtag_startNetwork();
1063
1064         /* we're going to access the jim interpreter from here on... */
1065         openocd_sleep_postlude();
1066         startUart();
1067
1068         add_default_dirs();
1069
1070         /* initialize commandline interface */
1071         command_context_t * cmd_ctx;
1072         cmd_ctx = setup_command_handler();
1073         command_set_output_handler(cmd_ctx, configuration_output_handler, NULL);
1074         command_context_mode(cmd_ctx, COMMAND_CONFIG);
1075
1076 #if BUILD_IOUTIL
1077         if (ioutil_init(cmd_ctx) != ERROR_OK)
1078         {
1079                 return EXIT_FAILURE;
1080         }
1081 #endif
1082
1083
1084 #ifdef CYGPKG_PROFILE_GPROF
1085         register_command(cmd_ctx, NULL, "ecosboard_profile", eCosBoard_handle_eCosBoard_profile_command,
1086                         COMMAND_ANY, NULL);
1087 #endif
1088
1089         register_command(cmd_ctx, NULL, "uart", handle_uart_command, COMMAND_ANY,
1090                         "uart <baud>  - forward uart on port 5555");
1091
1092         int errVal;
1093         errVal = log_init(cmd_ctx);
1094         if (errVal != ERROR_OK)
1095         {
1096                 diag_printf("log_init() failed %d\n", errVal);
1097                 exit(-1);
1098         }
1099
1100         set_log_output(cmd_ctx, log);
1101
1102         LOG_DEBUG("log init complete");
1103
1104         //      diag_printf("Executing config files\n");
1105
1106         if (logAllToSerial)
1107         {
1108                 diag_printf(
1109                                  "%s/logserial = 1 => sending log output to serial port using \"debug_level 3\" as default.\n", zylin_config_dir);
1110                 command_run_line(cmd_ctx, "debug_level 3");
1111         }
1112
1113         command_run_linef(cmd_ctx, "script /rom/openocd.cfg");
1114
1115         /* we MUST always run the init command as it will launch telnet sessions */
1116         command_run_line(cmd_ctx, "init");
1117
1118         // FIX!!!  Yuk!
1119         // diag_printf() is really invoked from many more places than we trust it
1120         // not to cause instabilities(e.g. invoking fputc() from an interrupt is *BAD*).
1121         //
1122         // Disabling it here is safe and gives us enough logged debug output for now. Crossing
1123         // fingers that it doesn't cause any crashes.
1124         diag_printf("Init complete, GDB & telnet servers launched.\n");
1125         command_set_output_handler(cmd_ctx,
1126                         zy1000_configuration_output_handler_log, NULL);
1127         if (!logAllToSerial)
1128         {
1129                 serialLog = false;
1130         }
1131
1132         /* handle network connections */
1133         server_loop(cmd_ctx);
1134         openocd_sleep_prelude();
1135
1136         /* shut server down */
1137         server_quit();
1138
1139         /* free commandline interface */
1140         command_done(cmd_ctx);
1141         umount("/config");
1142
1143         exit(0);
1144         for (;;)
1145                 ;
1146 }
1147
1148 cyg_int32 cyg_httpd_exec_cgi_tcl(char *file_name);
1149 cyg_int32 homeForm(CYG_HTTPD_STATE *p)
1150 {
1151         cyg_httpd_exec_cgi_tcl("/ram/cgi/index.tcl");
1152         return 0;
1153 }
1154
1155 CYG_HTTPD_HANDLER_TABLE_ENTRY(root_label, "/", homeForm);
1156
1157 CYG_HTTPD_MIME_TABLE_ENTRY(text_mime_label, "text", "text/plain");
1158 CYG_HTTPD_MIME_TABLE_ENTRY(bin_mime_label, "bin", "application/octet-stream");
1159
1160 #include <pkgconf/system.h>
1161 #include <pkgconf/hal.h>
1162 #include <pkgconf/kernel.h>
1163 #include <pkgconf/io_fileio.h>
1164 #include <pkgconf/fs_rom.h>
1165
1166 #include <cyg/kernel/ktypes.h>         // base kernel types
1167 #include <cyg/infra/cyg_trac.h>        // tracing macros
1168 #include <cyg/infra/cyg_ass.h>         // assertion macros
1169 #include <cyg/fileio/fileio.h>
1170 #include <cyg/kernel/kapi.h>
1171 #include <cyg/infra/diag.h>
1172
1173 //==========================================================================
1174 // Eventually we want to eXecute In Place from the ROM in a protected
1175 // environment, so we'll need executables to be aligned to a boundary
1176 // suitable for MMU protection. A suitable boundary would be the 4k
1177 // boundary in all the CPU architectures I am currently aware of.
1178
1179 // Forward definitions
1180
1181 // Filesystem operations
1182 static int tftpfs_mount(cyg_fstab_entry *fste, cyg_mtab_entry *mte);
1183 static int tftpfs_umount(cyg_mtab_entry *mte);
1184 static int tftpfs_open(cyg_mtab_entry *mte, cyg_dir dir, const char *name,
1185                 int mode, cyg_file *fte);
1186 static int tftpfs_fo_read(struct CYG_FILE_TAG *fp, struct CYG_UIO_TAG *uio);
1187 static int tftpfs_fo_write(struct CYG_FILE_TAG *fp, struct CYG_UIO_TAG *uio);
1188
1189 // File operations
1190 static int tftpfs_fo_fsync(struct CYG_FILE_TAG *fp, int mode);
1191 static int tftpfs_fo_close(struct CYG_FILE_TAG *fp);
1192 static int tftpfs_fo_lseek(struct CYG_FILE_TAG *fp, off_t *apos, int whence);
1193
1194 //==========================================================================
1195 // Filesystem table entries
1196
1197 // -------------------------------------------------------------------------
1198 // Fstab entry.
1199 // This defines the entry in the filesystem table.
1200 // For simplicity we use _FILESYSTEM synchronization for all accesses since
1201 // we should never block in any filesystem operations.
1202 #if 1
1203 FSTAB_ENTRY(tftpfs_fste, "tftpfs", 0,
1204                 CYG_SYNCMODE_NONE,
1205                 tftpfs_mount,
1206                 tftpfs_umount,
1207                 tftpfs_open,
1208                 (cyg_fsop_unlink *)cyg_fileio_erofs,
1209                 (cyg_fsop_mkdir *)cyg_fileio_erofs,
1210                 (cyg_fsop_rmdir *)cyg_fileio_erofs,
1211                 (cyg_fsop_rename *)cyg_fileio_erofs,
1212                 (cyg_fsop_link *)cyg_fileio_erofs,
1213                 (cyg_fsop_opendir *)cyg_fileio_erofs,
1214                 (cyg_fsop_chdir *)cyg_fileio_erofs,
1215                 (cyg_fsop_stat *)cyg_fileio_erofs,
1216                 (cyg_fsop_getinfo *)cyg_fileio_erofs,
1217                 (cyg_fsop_setinfo *)cyg_fileio_erofs);
1218 #endif
1219
1220 // -------------------------------------------------------------------------
1221 // mtab entry.
1222 // This defines a single ROMFS loaded into ROM at the configured address
1223 //
1224 // MTAB_ENTRY(rom_mte,  // structure name
1225 //              "/rom",         // mount point
1226 //              "romfs",        // FIlesystem type
1227 //              "",             // hardware device
1228 //  (CYG_ADDRWORD) CYGNUM_FS_ROM_BASE_ADDRESS   // Address in ROM
1229 //);
1230
1231
1232 // -------------------------------------------------------------------------
1233 // File operations.
1234 // This set of file operations are used for normal open files.
1235
1236 static cyg_fileops tftpfs_fileops =
1237 { tftpfs_fo_read, tftpfs_fo_write, tftpfs_fo_lseek,
1238                 (cyg_fileop_ioctl *) cyg_fileio_erofs, cyg_fileio_seltrue,
1239                 tftpfs_fo_fsync, tftpfs_fo_close,
1240                 (cyg_fileop_fstat *) cyg_fileio_erofs,
1241                 (cyg_fileop_getinfo *) cyg_fileio_erofs,
1242                 (cyg_fileop_setinfo *) cyg_fileio_erofs, };
1243
1244 // -------------------------------------------------------------------------
1245 // tftpfs_mount()
1246 // Process a mount request. This mainly finds root for the
1247 // filesystem.
1248
1249 static int tftpfs_mount(cyg_fstab_entry *fste, cyg_mtab_entry *mte)
1250 {
1251         return ENOERR;
1252 }
1253
1254 static int tftpfs_umount(cyg_mtab_entry *mte)
1255 {
1256         return ENOERR;
1257 }
1258
1259 struct Tftp
1260 {
1261         int write;
1262         int readFile;
1263         cyg_uint8 *mem;
1264         int actual;
1265         char *server;
1266         char *file;
1267 };
1268
1269 static void freeTftp(struct Tftp *t)
1270 {
1271         if (t == NULL)
1272                 return;
1273         if (t->mem)
1274                 free(t->mem);
1275         if (t->server)
1276                 free(t->server);
1277         if (t->file)
1278                 free(t->file);
1279         free(t);
1280 }
1281
1282 static const int tftpMaxSize = 8192 * 1024;
1283 static int tftpfs_open(cyg_mtab_entry *mte, cyg_dir dir, const char *name,
1284                 int mode, cyg_file *file)
1285 {
1286         struct Tftp *tftp;
1287         tftp = malloc(sizeof(struct Tftp));
1288         if (tftp == NULL)
1289                 return EMFILE;
1290         memset(tftp, 0, sizeof(struct Tftp));
1291
1292         file->f_flag |= mode & CYG_FILE_MODE_MASK;
1293         file->f_type = CYG_FILE_TYPE_FILE;
1294         file->f_ops = &tftpfs_fileops;
1295         file->f_offset = 0;
1296         file->f_data = 0;
1297         file->f_xops = 0;
1298
1299         tftp->mem = malloc(tftpMaxSize);
1300         if (tftp->mem == NULL)
1301         {
1302                 freeTftp(tftp);
1303                 return EMFILE;
1304         }
1305
1306         char *server = strchr(name, '/');
1307         if (server == NULL)
1308         {
1309                 freeTftp(tftp);
1310                 return EMFILE;
1311         }
1312
1313         tftp->server = malloc(server - name + 1);
1314         if (tftp->server == NULL)
1315         {
1316                 freeTftp(tftp);
1317                 return EMFILE;
1318         }
1319         strncpy(tftp->server, name, server - name);
1320         tftp->server[server - name] = 0;
1321
1322         tftp->file = strdup(server + 1);
1323         if (tftp->file == NULL)
1324         {
1325                 freeTftp(tftp);
1326                 return EMFILE;
1327         }
1328
1329         file->f_data = (CYG_ADDRWORD) tftp;
1330
1331         return ENOERR;
1332 }
1333
1334 static int fetchTftp(struct Tftp *tftp)
1335 {
1336         if (!tftp->readFile)
1337         {
1338                 int err;
1339                 tftp->actual = tftp_client_get(tftp->file, tftp->server, 0, tftp->mem,
1340                                 tftpMaxSize, TFTP_OCTET, &err);
1341
1342                 if (tftp->actual < 0)
1343                 {
1344                         return EMFILE;
1345                 }
1346                 tftp->readFile = 1;
1347         }
1348         return ENOERR;
1349 }
1350
1351 // -------------------------------------------------------------------------
1352 // tftpfs_fo_write()
1353 // Read data from file.
1354
1355 static int tftpfs_fo_read(struct CYG_FILE_TAG *fp, struct CYG_UIO_TAG *uio)
1356 {
1357         struct Tftp *tftp = (struct Tftp *) fp->f_data;
1358
1359         if (fetchTftp(tftp) != ENOERR)
1360                 return EMFILE;
1361
1362         int i;
1363         off_t pos = fp->f_offset;
1364         int resid = 0;
1365         for (i = 0; i < uio->uio_iovcnt; i++)
1366         {
1367                 cyg_iovec *iov = &uio->uio_iov[i];
1368                 char *buf = (char *) iov->iov_base;
1369                 off_t len = iov->iov_len;
1370
1371                 if (len + pos > tftp->actual)
1372                 {
1373                         len = tftp->actual - pos;
1374                 }
1375                 resid += iov->iov_len - len;
1376
1377                 memcpy(buf, tftp->mem + pos, len);
1378                 pos += len;
1379
1380         }
1381         uio->uio_resid = resid;
1382         fp->f_offset = pos;
1383
1384         return ENOERR;
1385 }
1386
1387 static int tftpfs_fo_write(struct CYG_FILE_TAG *fp, struct CYG_UIO_TAG *uio)
1388 {
1389         struct Tftp *tftp = (struct Tftp *) fp->f_data;
1390
1391         int i;
1392         off_t pos = fp->f_offset;
1393         int resid = 0;
1394         for (i = 0; i < uio->uio_iovcnt; i++)
1395         {
1396                 cyg_iovec *iov = &uio->uio_iov[i];
1397                 char *buf = (char *) iov->iov_base;
1398                 off_t len = iov->iov_len;
1399
1400                 if (len + pos > tftpMaxSize)
1401                 {
1402                         len = tftpMaxSize - pos;
1403                 }
1404                 resid += iov->iov_len - len;
1405
1406                 memcpy(tftp->mem + pos, buf, len);
1407                 pos += len;
1408
1409         }
1410         uio->uio_resid = resid;
1411         fp->f_offset = pos;
1412
1413         tftp->write = 1;
1414
1415         return ENOERR;
1416 }
1417
1418 static int tftpfs_fo_fsync(struct CYG_FILE_TAG *fp, int mode)
1419 {
1420         int error = ENOERR;
1421         return error;
1422 }
1423
1424 // -------------------------------------------------------------------------
1425 // romfs_fo_close()
1426 // Close a file. We just clear out the data pointer.
1427
1428 static int tftpfs_fo_close(struct CYG_FILE_TAG *fp)
1429 {
1430         struct Tftp *tftp = (struct Tftp *) fp->f_data;
1431         int error = ENOERR;
1432
1433         if (tftp->write)
1434         {
1435                 tftp_client_put(tftp->file, tftp->server, 0, tftp->mem, fp->f_offset,
1436                                 TFTP_OCTET, &error);
1437         }
1438
1439         freeTftp(tftp);
1440         fp->f_data = 0;
1441         return error;
1442 }
1443
1444 // -------------------------------------------------------------------------
1445 // romfs_fo_lseek()
1446 // Seek to a new file position.
1447
1448 static int tftpfs_fo_lseek(struct CYG_FILE_TAG *fp, off_t *apos, int whence)
1449 {
1450         struct Tftp *tftp = (struct Tftp *) fp->f_data;
1451         off_t pos = *apos;
1452
1453         if (fetchTftp(tftp) != ENOERR)
1454                 return EMFILE;
1455
1456         switch (whence)
1457         {
1458         case SEEK_SET:
1459                 // Pos is already where we want to be.
1460                 break;
1461
1462         case SEEK_CUR:
1463                 // Add pos to current offset.
1464                 pos += fp->f_offset;
1465                 break;
1466
1467         case SEEK_END:
1468                 // Add pos to file size.
1469                 pos += tftp->actual;
1470                 break;
1471
1472         default:
1473                 return EINVAL;
1474         }
1475
1476         // Check that pos is still within current file size, or at the
1477         // very end.
1478         if (pos < 0 || pos > tftp->actual)
1479                 return EINVAL;
1480
1481         // All OK, set fp offset and return new position.
1482         *apos = fp->f_offset = pos;
1483
1484         return ENOERR;
1485 }
1486
1487 void usleep(int us)
1488 {
1489         if (us > 10000)
1490                 cyg_thread_delay(us / 10000 + 1);
1491         else
1492                 HAL_DELAY_US(us);
1493 }
1494
1495 // Chunked version.
1496 cyg_int32 show_log_entry(CYG_HTTPD_STATE *phttpstate)
1497 {
1498         cyg_httpd_start_chunked("text");
1499         if (logCount >= logSize)
1500         {
1501                 cyg_httpd_write_chunked(logBuffer + logCount % logSize, logSize
1502                                 - logCount % logSize);
1503         }
1504         cyg_httpd_write_chunked(logBuffer, writePtr);
1505         cyg_httpd_end_chunked();
1506         return -1;
1507 }
1508
1509 CYG_HTTPD_HANDLER_TABLE_ENTRY(show_log, "/ram/log", show_log_entry);
1510
1511 // Filesystem operations
1512 static int logfs_mount(cyg_fstab_entry *fste, cyg_mtab_entry *mte);
1513 static int logfs_umount(cyg_mtab_entry *mte);
1514 static int logfs_open(cyg_mtab_entry *mte, cyg_dir dir, const char *name,
1515                 int mode, cyg_file *fte);
1516 static int logfs_fo_write(struct CYG_FILE_TAG *fp, struct CYG_UIO_TAG *uio);
1517
1518 // File operations
1519 static int logfs_fo_fsync(struct CYG_FILE_TAG *fp, int mode);
1520 static int logfs_fo_close(struct CYG_FILE_TAG *fp);
1521
1522 #include <cyg/io/devtab.h>
1523
1524 //==========================================================================
1525 // Filesystem table entries
1526
1527 // -------------------------------------------------------------------------
1528 // Fstab entry.
1529 // This defines the entry in the filesystem table.
1530 // For simplicity we use _FILESYSTEM synchronization for all accesses since
1531 // we should never block in any filesystem operations.
1532 FSTAB_ENTRY(logfs_fste, "logfs", 0,
1533                 CYG_SYNCMODE_FILE_FILESYSTEM | CYG_SYNCMODE_IO_FILESYSTEM,
1534                 logfs_mount,
1535                 logfs_umount,
1536                 logfs_open,
1537                 (cyg_fsop_unlink *)cyg_fileio_erofs,
1538                 (cyg_fsop_mkdir *)cyg_fileio_erofs,
1539                 (cyg_fsop_rmdir *)cyg_fileio_erofs,
1540                 (cyg_fsop_rename *)cyg_fileio_erofs,
1541                 (cyg_fsop_link *)cyg_fileio_erofs,
1542                 (cyg_fsop_opendir *)cyg_fileio_erofs,
1543                 (cyg_fsop_chdir *)cyg_fileio_erofs,
1544                 (cyg_fsop_stat *)cyg_fileio_erofs,
1545                 (cyg_fsop_getinfo *)cyg_fileio_erofs,
1546                 (cyg_fsop_setinfo *)cyg_fileio_erofs);
1547
1548 // -------------------------------------------------------------------------
1549 // File operations.
1550 // This set of file operations are used for normal open files.
1551
1552 static cyg_fileops logfs_fileops =
1553 { (cyg_fileop_read *) cyg_fileio_erofs, (cyg_fileop_write *) logfs_fo_write,
1554                 (cyg_fileop_lseek *) cyg_fileio_erofs,
1555                 (cyg_fileop_ioctl *) cyg_fileio_erofs, cyg_fileio_seltrue,
1556                 logfs_fo_fsync, logfs_fo_close, (cyg_fileop_fstat *) cyg_fileio_erofs,
1557                 (cyg_fileop_getinfo *) cyg_fileio_erofs,
1558                 (cyg_fileop_setinfo *) cyg_fileio_erofs, };
1559
1560 // -------------------------------------------------------------------------
1561 // logfs_mount()
1562 // Process a mount request. This mainly finds root for the
1563 // filesystem.
1564
1565 static int logfs_mount(cyg_fstab_entry *fste, cyg_mtab_entry *mte)
1566 {
1567         return ENOERR;
1568 }
1569
1570 static int logfs_umount(cyg_mtab_entry *mte)
1571 {
1572         return ENOERR;
1573 }
1574
1575 static int logfs_open(cyg_mtab_entry *mte, cyg_dir dir, const char *name,
1576                 int mode, cyg_file *file)
1577 {
1578         file->f_flag |= mode & CYG_FILE_MODE_MASK;
1579         file->f_type = CYG_FILE_TYPE_FILE;
1580         file->f_ops = &logfs_fileops;
1581         file->f_offset = 0;
1582         file->f_data = 0;
1583         file->f_xops = 0;
1584         return ENOERR;
1585 }
1586
1587 // -------------------------------------------------------------------------
1588 // logfs_fo_write()
1589 // Write data to file.
1590
1591 static int logfs_fo_write(struct CYG_FILE_TAG *fp, struct CYG_UIO_TAG *uio)
1592 {
1593         int i;
1594         for (i = 0; i < uio->uio_iovcnt; i++)
1595         {
1596                 cyg_iovec *iov = &uio->uio_iov[i];
1597                 char *buf = (char *) iov->iov_base;
1598                 off_t len = iov->iov_len;
1599
1600                 diag_write(buf, len);
1601         }
1602         uio->uio_resid = 0;
1603
1604         return ENOERR;
1605 }
1606 static int logfs_fo_fsync(struct CYG_FILE_TAG *fp, int mode)
1607 {
1608         return ENOERR;
1609 }
1610
1611 // -------------------------------------------------------------------------
1612 // romfs_fo_close()
1613 // Close a file. We just clear out the data pointer.
1614
1615 static int logfs_fo_close(struct CYG_FILE_TAG *fp)
1616 {
1617         return ENOERR;
1618 }
1619
1620 int loadFile(const char *fileName, void **data, int *len);
1621
1622 /* boolean parameter stored on config */
1623 int boolParam(char *var)
1624 {
1625         bool result = false;
1626         char *name = alloc_printf("%s/%s", zylin_config_dir, var);
1627         if (name == NULL)
1628                 return result;
1629
1630         void *data;
1631         int len;
1632         if (loadFile(name, &data, &len) == ERROR_OK)
1633         {
1634                 if (len > 1)
1635                         len = 1;
1636                 result = strncmp((char *) data, "1", len) == 0;
1637                 free(data);
1638         }
1639         free(name);
1640         return result;
1641 }
1642