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TCL: Add board file for EVALSPEAr300
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1 /***************************************************************************
2  *   Copyright (C) 2007-2010 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 <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