fix warnings when building for eCos

[openocd.git] / src / ecosboard.c

/***************************************************************************
 *   Copyright (C) 2007-2008 by Øyvind Harboe                              *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "log.h"
#include "types.h"
#include "jtag.h"
#include "configuration.h"
#include "xsvf.h"
#include "target.h"
#include "flash.h"
#include "nand.h"
#include "pld.h"

#include "command.h"
#include "server.h"
#include "telnet_server.h"
#include "gdb_server.h"

#include <time_support.h>
#include <sys/time.h>
#include <sys/types.h>
#include <strings.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>

#include <cyg/io/flash.h>
#include <pkgconf/fs_jffs2.h>   // Address of JFFS2
#include <network.h>

#include <fcntl.h>
#include <sys/stat.h>
#include <cyg/fileio/fileio.h>
#include <dirent.h>
#include <cyg/athttpd/http.h>
#include <cyg/athttpd/socket.h>
#include <cyg/athttpd/handler.h>
#include <cyg/athttpd/cgi.h>
#include <cyg/athttpd/forms.h>
#include <cyg/hal/hal_diag.h>
#include <cyg/kernel/kapi.h>
#include <cyg/io/serialio.h>
#include <cyg/io/io.h>
#include <netinet/tcp.h>
#include "rom.h"
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <net/if.h>
#include <arpa/inet.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <netinet/in.h>
#include <unistd.h>
#include <arpa/inet.h>
#include <stdio.h>
#include <ifaddrs.h>
#include <string.h>

#include <unistd.h>
#include <stdio.h>
#define MAX_IFS 64
#if defined(CYGPKG_NET_FREEBSD_STACK)
#include <tftp_support.h>
/* posix compatibility broken*/
struct tftpd_fileops fileops =
{
        (int (*)(const char *, int))open,
        close,
        (int (*)(int, const void *, int))write,
        ( int (*)(int, void *, int))read
};

#endif

#define ZYLIN_VERSION "1.45"
#define ZYLIN_DATE __DATE__
#define ZYLIN_TIME __TIME__
/* hmmm....  we can't pick up the right # during build if we've checked this out
 * in Eclipse... arrggghh...*/
#define ZYLIN_OPENOCD $Revision$
#define ZYLIN_OPENOCD_VERSION "Zylin JTAG ZY1000 " ZYLIN_VERSION " " ZYLIN_DATE " " ZYLIN_TIME
#define ZYLIN_CONFIG_DIR "/config/settings"

void diag_write(char *buf, int len)
{
        int j;
        for (j = 0; j < len; j++)
        {
                diag_printf("%c", buf[j]);
        }
}

static bool serialLog = true;
static bool writeLog = true;


struct FastLoad
{
        u32 address;
        u8 *data;
        int length;

};

static int fastload_num;
static struct FastLoad *fastload;

static void free_fastload()
{
        if (fastload!=NULL)
        {
                int i;
                for (i=0; i<fastload_num; i++)
                {
                        if (fastload[i].data)
                                free(fastload[i].data);
                }
                free(fastload);
                fastload=NULL;
        }
}


int handle_fast_load_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
        u8 *buffer;
        u32 buf_cnt;
        u32 image_size;
        u32 min_address=0;
        u32 max_address=0xffffffff;
        int i;
        int retval;

        image_t image;

        duration_t duration;
        char *duration_text;

        if ((argc < 1)||(argc > 5))
        {
                return ERROR_COMMAND_SYNTAX_ERROR;
        }

        /* a base address isn't always necessary, default to 0x0 (i.e. don't relocate) */
        if (argc >= 2)
        {
                image.base_address_set = 1;
                image.base_address = strtoul(args[1], NULL, 0);
        }
        else
        {
                image.base_address_set = 0;
        }


        image.start_address_set = 0;

        if (argc>=4)
        {
                min_address=strtoul(args[3], NULL, 0);
        }
        if (argc>=5)
        {
                max_address=strtoul(args[4], NULL, 0)+min_address;
        }

        if (min_address>max_address)
        {
                return ERROR_COMMAND_SYNTAX_ERROR;
        }

        duration_start_measure(&duration);

        if (image_open(&image, args[0], (argc >= 3) ? args[2] : NULL) != ERROR_OK)
        {
                return ERROR_OK;
        }

        image_size = 0x0;
        retval = ERROR_OK;
        fastload_num=image.num_sections;
        fastload=(struct FastLoad *)malloc(sizeof(struct FastLoad)*image.num_sections);
        if (fastload==NULL)
        {
                image_close(&image);
                return ERROR_FAIL;
        }
        memset(fastload, 0, sizeof(struct FastLoad)*image.num_sections);
        for (i = 0; i < image.num_sections; i++)
        {
                buffer = malloc(image.sections[i].size);
                if (buffer == NULL)
                {
                        command_print(cmd_ctx, "error allocating buffer for section (%d bytes)", image.sections[i].size);
                        break;
                }

                if ((retval = image_read_section(&image, i, 0x0, image.sections[i].size, buffer, &buf_cnt)) != ERROR_OK)
                {
                        free(buffer);
                        break;
                }

                u32 offset=0;
                u32 length=buf_cnt;


                /* DANGER!!! beware of unsigned comparision here!!! */

                if ((image.sections[i].base_address+buf_cnt>=min_address)&&
                                (image.sections[i].base_address<max_address))
                {
                        if (image.sections[i].base_address<min_address)
                        {
                                /* clip addresses below */
                                offset+=min_address-image.sections[i].base_address;
                                length-=offset;
                        }

                        if (image.sections[i].base_address+buf_cnt>max_address)
                        {
                                length-=(image.sections[i].base_address+buf_cnt)-max_address;
                        }

                        fastload[i].address=image.sections[i].base_address+offset;
                        fastload[i].data=malloc(length);
                        if (fastload[i].data==NULL)
                        {
                                free(buffer);
                                break;
                        }
                        memcpy(fastload[i].data, buffer+offset, length);
                        fastload[i].length=length;

                        image_size += length;
                        command_print(cmd_ctx, "%u byte written at address 0x%8.8x", length, image.sections[i].base_address+offset);
                }

                free(buffer);
        }

        duration_stop_measure(&duration, &duration_text);
        if (retval==ERROR_OK)
        {
                command_print(cmd_ctx, "downloaded %u byte in %s", image_size, duration_text);
        }
        free(duration_text);

        image_close(&image);

        if (retval!=ERROR_OK)
        {
                free_fastload();
        }

        return retval;
}

int handle_fast_load_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
        if (argc>0)
                return ERROR_COMMAND_SYNTAX_ERROR;
        if (fastload==NULL)
        {
                LOG_ERROR("No image in memory");
                return ERROR_FAIL;
        }
        int i;
        int ms=timeval_ms();
        int size=0;
        for (i=0; i<fastload_num;i++)
        {
                int retval;
                target_t *target = get_current_target(cmd_ctx);
                if ((retval = target_write_buffer(target, fastload[i].address, fastload[i].length, fastload[i].data)) != ERROR_OK)
                {
                        return retval;
                }
                size+=fastload[i].length;
        }
        int after=timeval_ms();
        command_print(cmd_ctx, "Loaded image %f kBytes/s", (float)(size/1024.0)/((float)(after-ms)/1000.0));
        return ERROR_OK;
}


/* Give TELNET a way to find out what version this is */
int handle_zy1000_version_command(struct command_context_s *cmd_ctx, char *cmd,
                char **args, int argc)
{
        if (argc > 1)
        {
                return ERROR_COMMAND_SYNTAX_ERROR;
        }
        if (argc == 0)
        {
                command_print(cmd_ctx, ZYLIN_OPENOCD_VERSION);
        } else if (strcmp("openocd", args[0])==0)
        {
                command_print(cmd_ctx, "%d", ZYLIN_OPENOCD);
        } else if (strcmp("zy1000", args[0])==0)
        {
                command_print(cmd_ctx, "%s", ZYLIN_VERSION);
        } else if (strcmp("date", args[0])==0)
        {
                command_print(cmd_ctx, "%s", ZYLIN_DATE);
        } else
        {
                return ERROR_COMMAND_SYNTAX_ERROR;
        }

        return ERROR_OK;
}

extern flash_driver_t *flash_drivers[];
extern target_type_t *target_types[];

#ifdef CYGPKG_PROFILE_GPROF
#include <cyg/profile/profile.h>

extern char _stext, _etext; // Defined by the linker

void start_profile(void)
{
        // This starts up the system-wide profiling, gathering
        // profile information on all of the code, with a 16 byte
        // "bucket" size, at a rate of 100us/profile hit.
        // Note: a bucket size of 16 will give pretty good function
        //       resolution.  Much smaller and the buffer becomes
        //       much too large for very little gain.
        // Note: a timer period of 100us is also a reasonable
        //       compromise.  Any smaller and the overhead of
        //       handling the timter (profile) interrupt could
        //       swamp the system.  A fast processor might get
        //       by with a smaller value, but a slow one could
        //       even be swamped by this value.  If the value is
        //       too large, the usefulness of the profile is reduced.

        // no more interrupts than 1/10ms.
        //    profile_on(&_stext, &_etext, 16, 10000); // DRAM
        //profile_on((void *)0, (void *)0x40000, 16, 10000); // SRAM
        profile_on(0, &_etext, 16, 10000); // SRAM & DRAM
}
#endif

// launch GDB server if a config file exists
bool zylinjtag_parse_config_file(struct command_context_s *cmd_ctx, const char *config_file_name)
{
        bool foundFile = false;
        FILE *config_file = NULL;
        command_print(cmd_ctx, "executing config file %s", config_file_name);
        config_file = fopen(config_file_name, "r");
        if (config_file)
        {
                fclose(config_file);
                int retval;
                retval = command_run_linef(cmd_ctx, "script %s", config_file_name);
                if (retval == ERROR_OK)
                {
                        foundFile = true;
                }
                else
                {
                        command_print(cmd_ctx, "Failed executing %s %d", config_file_name, retval);
                }
        }
        else
        {
                command_print(cmd_ctx, "No %s found", config_file_name);
        }

        return foundFile;
}

extern int eth0_up;
static FILE *log;

static char reboot_stack[2048];


static void
zylinjtag_reboot(cyg_addrword_t data)
{
        serialLog = true;
        diag_printf("Rebooting in 100 ticks..\n");
        cyg_thread_delay(100);
        diag_printf("Unmounting /config..\n");
        umount("/config");
        diag_printf("Rebooting..\n");
        HAL_PLATFORM_RESET();
}
static cyg_thread zylinjtag_thread_object;
static cyg_handle_t zylinjtag_thread_handle;

void reboot(void)
{
    cyg_thread_create(1,
                      zylinjtag_reboot,
                      (cyg_addrword_t)0,
                      "reboot Thread",
                      (void *)reboot_stack,
                      sizeof(reboot_stack),
                      &zylinjtag_thread_handle,
                      &zylinjtag_thread_object);
        cyg_thread_resume(zylinjtag_thread_handle);
}

int configuration_output_handler(struct command_context_s *context, const char* line)
{
        diag_printf("%s", line);

        return ERROR_OK;
}

int zy1000_configuration_output_handler_log(struct command_context_s *context, const char* line)
{
        LOG_USER_N("%s", line);

        return ERROR_OK;
}

int handle_rm_command(struct command_context_s *cmd_ctx, char *cmd,
                char **args, int argc)
{
        if (argc != 1)
        {
                command_print(cmd_ctx, "rm <filename>");
                return ERROR_INVALID_ARGUMENTS;
        }

        if (unlink(args[0]) != 0)
        {
                command_print(cmd_ctx, "failed: %d", errno);
        }

        return ERROR_OK;
}

int loadFile(const char *fileName, void **data, int *len);

int handle_cat_command(struct command_context_s *cmd_ctx, char *cmd,
                char **args, int argc)
{
        if (argc != 1)
        {
                command_print(cmd_ctx, "cat <filename>");
                return ERROR_INVALID_ARGUMENTS;
        }

        // NOTE!!! we only have line printing capability so we print the entire file as a single line.
        void *data;
        int len;

        int retval = loadFile(args[0], &data, &len);
        if (retval == ERROR_OK)
        {
                command_print(cmd_ctx, "%s", data);
                free(data);
        }
        else
        {
                command_print(cmd_ctx, "%s not found %d", args[0], retval);
        }

        return ERROR_OK;
}
int handle_trunc_command(struct command_context_s *cmd_ctx, char *cmd,
                char **args, int argc)
{
        if (argc != 1)
        {
                command_print(cmd_ctx, "trunc <filename>");
                return ERROR_INVALID_ARGUMENTS;
        }

        FILE *config_file = NULL;
        config_file = fopen(args[0], "w");
        if (config_file != NULL)
                fclose(config_file);

        return ERROR_OK;
}


int handle_meminfo_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
        static int prev = 0;
        struct mallinfo info;

        if (argc != 0)
        {
                command_print(cmd_ctx, "meminfo");
                return ERROR_INVALID_ARGUMENTS;
        }

        info = mallinfo();

        if (prev > 0)
        {
                command_print(cmd_ctx, "Diff:            %d", prev - info.fordblks);
        }
        prev = info.fordblks;

        command_print(cmd_ctx, "Available ram:   %d", info.fordblks );

        return ERROR_OK;
}

static bool savePower;

static void setPower(bool power)
{
        savePower = power;
        if (power)
        {
                HAL_WRITE_UINT32(0x08000014, 0x8);
        } else
        {
                HAL_WRITE_UINT32(0x08000010, 0x8);
        }
}

int handle_power_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
        if (argc > 1)
        {
                return ERROR_INVALID_ARGUMENTS;
        }

        if (argc == 1)
        {
                if (strcmp(args[0], "on") == 0)
                {
                        setPower(1);
                }
                else if (strcmp(args[0], "off") == 0)
                {
                        setPower(0);
                } else
                {
                        command_print(cmd_ctx, "arg is \"on\" or \"off\"");
                        return ERROR_INVALID_ARGUMENTS;
                }
        }

        command_print(cmd_ctx, "Target power %s", savePower ? "on" : "off");

        return ERROR_OK;
}

int handle_append_command(struct command_context_s *cmd_ctx, char *cmd,
                char **args, int argc)
{
        if (argc < 1)
        {
                command_print(cmd_ctx,
                                "append <filename> [<string1>, [<string2>, ...]]");
                return ERROR_INVALID_ARGUMENTS;
        }

        FILE *config_file = NULL;
        config_file = fopen(args[0], "a");
        if (config_file != NULL)
        {
                int i;
                fseek(config_file, 0, SEEK_END);

                for (i = 1; i < argc; i++)
                {
                        fwrite(args[i], strlen(args[i]), 1, config_file);
                        if (i != argc - 1)
                        {
                                fwrite(" ", 1, 1, config_file);
                        }
                }
                fwrite("\n", 1, 1, config_file);
                fclose(config_file);
        }

        return ERROR_OK;
}

extern int telnet_socket;

int readMore(int fd, void *data, int length)
{
        /* used in select() */
        fd_set read_fds;

        /* monitor sockets for acitvity */
        int fd_max = 1;
        FD_ZERO(&read_fds);
        /* listen for new connections */
        FD_SET(fd, &read_fds);

        // Maximum 5 seconds.
        struct timeval tv;
        tv.tv_sec = 5;
        tv.tv_usec = 0;

        int retval = select(fd_max + 1, &read_fds, NULL, NULL, &tv);
        if (retval == 0)
        {
                diag_printf("Timed out waiting for binary payload\n");
                return -1;
        }
        if (retval != 1)
                return -1;

        return read_socket(fd, data, length);
}

int readAll(int fd, void *data, int length)
{
        int pos = 0;
        for (;;)
        {
                int actual = readMore(fd, ((char *) data) + pos, length - pos);
                //              diag_printf("Read %d bytes(pos=%d, length=%d)\n", actual, pos, length);
                if (actual <= 0)
                        return -1;
                pos += actual;
                if (pos == length)
                        break;
        }
        return length;
}

int handle_peek_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
        cyg_uint32 value;
        if (argc != 1)
        {
                return ERROR_INVALID_ARGUMENTS;
        }
        HAL_READ_UINT32(strtoul(args[0], NULL, 0), value);
        command_print(cmd_ctx, "0x%x : 0x%x", strtoul(args[0], NULL, 0), value);
        return ERROR_OK;
}

int handle_poke_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
        if (argc != 2)
        {
                return ERROR_INVALID_ARGUMENTS;
        }
        HAL_WRITE_UINT32(strtoul(args[0], NULL, 0), strtoul(args[1], NULL, 0));
        return ERROR_OK;
}

int handle_cp_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
        if (argc != 2)
        {
                return ERROR_INVALID_ARGUMENTS;
        }

        // NOTE!!! we only have line printing capability so we print the entire file as a single line.
        void *data;
        int len;

        int retval = loadFile(args[0], &data, &len);
        if (retval != ERROR_OK)
                return retval;

        FILE *f = fopen(args[1], "wb");
        if (f == NULL)
                retval = ERROR_INVALID_ARGUMENTS;

        int pos = 0;
        for (;;)
        {
                int chunk = len - pos;
                static const int maxChunk = 512 * 1024; // ~1/sec
                if (chunk > maxChunk)
                {
                        chunk = maxChunk;
                }

                if ((retval==ERROR_OK)&&(fwrite(((char *)data)+pos, 1, chunk, f)!=chunk))
                        retval = ERROR_INVALID_ARGUMENTS;

                if (retval != ERROR_OK)
                {
                        break;
                }

                command_print(cmd_ctx, "%d", len - pos);

                pos += chunk;

                if (pos == len)
                        break;
        }

        if (retval == ERROR_OK)
        {
                command_print(cmd_ctx, "Copied %s to %s", args[0], args[1]);
        } else
        {
                command_print(cmd_ctx, "Failed: %d", retval);
        }

        if (data != NULL)
                free(data);
        if (f != NULL)
                fclose(f);

        if (retval != ERROR_OK)
                unlink(args[1]);

        return retval;
}

#ifdef CYGPKG_PROFILE_GPROF
extern void start_profile();

int eCosBoard_handle_eCosBoard_profile_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
        command_print(cmd_ctx, "Profiling started");
        start_profile();
        return ERROR_OK;
}

#endif

externC void phi_init_all_network_interfaces();

command_context_t *cmd_ctx;

static bool webRunning = false;

void keep_webserver()
{
        // Target initialisation is only attempted at startup, so we sleep forever and
        // let the http server bail us out(i.e. get config files set up).
        diag_printf("OpenOCD has invoked exit().\n"
                "Use web server to correct any configuration settings and reboot.\n");
        if (!webRunning)
                reboot();

        // exit() will terminate the current thread and we we'll then sleep eternally or
        // we'll have a reboot scheduled.
}

extern void printDccChar(char c);

static char logBuffer[128 * 1024];
static const int logSize = sizeof(logBuffer);
int writePtr = 0;
int logCount = 0;

void _zylinjtag_diag_write_char(char c, void **param)
{
        if (writeLog)
        {
                logBuffer[writePtr] = c;
                writePtr = (writePtr + 1) % logSize;
                logCount++;
        }
        if (serialLog)
        {
                if (c == '\n')
                {
                        HAL_DIAG_WRITE_CHAR('\r');
                }
                HAL_DIAG_WRITE_CHAR(c);
        }

        printDccChar(c);
}

#define SHOW_RESULT(a, b) diag_printf(#a " failed %d\n", (int)b)

#define IOSIZE 512
static void copyfile(char *name2, char *name1)
{

        int err;
        char buf[IOSIZE];
        int fd1, fd2;
        ssize_t done, wrote;

        fd1 = open(name1, O_WRONLY | O_CREAT);
        if (fd1 < 0)
                SHOW_RESULT( open, fd1 );

        fd2 = open(name2, O_RDONLY);
        if (fd2 < 0)
                SHOW_RESULT( open, fd2 );

        for (;;)
        {
                done = read(fd2, buf, IOSIZE );
                if (done < 0)
                {
                        SHOW_RESULT( read, done );
                        break;
                }

        if( done == 0 ) break;

                wrote = write(fd1, buf, done);
        if( wrote != done ) SHOW_RESULT( write, wrote );

        if( wrote != done ) break;
        }

        err = close(fd1);
    if( err < 0 ) SHOW_RESULT( close, err );

        err = close(fd2);
    if( err < 0 ) SHOW_RESULT( close, err );

}
static void copydir(char *name)
{
        int err;
        DIR *dirp;

        mkdir("/ram/cgi", 0777);

        dirp = opendir(name);
    if( dirp == NULL ) SHOW_RESULT( opendir, -1 );

        for (;;)
        {
                struct dirent *entry = readdir(dirp);

                if (entry == NULL)
                        break;

                if (strcmp(entry->d_name, ".") == 0)
                        continue;
                if (strcmp(entry->d_name, "..") == 0)
                        continue;

                bool isDir = false;
                struct stat buf;
                char fullPath[PATH_MAX];
                strncpy(fullPath, name, PATH_MAX);
                strcat(fullPath, "/");
                strncat(fullPath, entry->d_name, PATH_MAX - strlen(fullPath));

                if (stat(fullPath, &buf) == -1)
                {
                        diag_printf("unable to read status from %s", fullPath);
                        break;
                }
                isDir = S_ISDIR(buf.st_mode) != 0;

                if (isDir)
                        continue;

                //        diag_printf("<INFO>: entry %14s",entry->d_name);
                char fullname[PATH_MAX];
                char fullname2[PATH_MAX];

                strcpy(fullname, name);
                strcat(fullname, entry->d_name);

                strcpy(fullname2, "/ram/cgi/");
                strcat(fullname2, entry->d_name);
                //        diag_printf("from %s to %s\n", fullname, fullname2);
                copyfile(fullname, fullname2);

                //       diag_printf("\n");
        }

        err = closedir(dirp);
    if( err < 0 ) SHOW_RESULT( stat, err );
}

#if 0
MTAB_ENTRY( romfs_mte1,
                "/rom",
                "romfs",
                "",
                (CYG_ADDRWORD) &filedata[0] );
#endif

void openocd_sleep_prelude()
{
        cyg_mutex_unlock(&httpstate.jim_lock);
}

void openocd_sleep_postlude()
{
        cyg_mutex_lock(&httpstate.jim_lock);
}

static int
zylinjtag_Jim_Command_rm(Jim_Interp *interp,
                                   int argc,
                Jim_Obj * const *argv)
{
        int del;
        if (argc != 2)
        {
                Jim_WrongNumArgs(interp, 1, argv, "rm ?dirorfile?");
                return JIM_ERR;
        }

        del = 0;
        if (unlink(Jim_GetString(argv[1], NULL)) == 0)
                del = 1;
        if (rmdir(Jim_GetString(argv[1], NULL)) == 0)
                del = 1;

        return del ? JIM_OK : JIM_ERR;
}

static int zylinjtag_Jim_Command_threads(Jim_Interp *interp, int argc,
                Jim_Obj * const *argv)
{
        cyg_handle_t thread = 0;
        cyg_uint16 id = 0;
        Jim_Obj *threads = Jim_NewListObj(interp, NULL, 0);

        /* Loop over the threads, and generate a table row for
         * each.
         */
        while (cyg_thread_get_next(&thread, &id))
        {
                Jim_Obj *threadObj = Jim_NewListObj(interp, NULL, 0);

                cyg_thread_info info;
                char *state_string;

                cyg_thread_get_info(thread, id, &info);

                if (info.name == NULL)
                        info.name = "<no name>";

                Jim_ListAppendElement(interp, threadObj, Jim_NewStringObj(interp,
                                info.name, strlen(info.name)));

                /* Translate the state into a string.
                 */
                if (info.state == 0)
                        state_string = "RUN";
                else if (info.state & 0x04)
                        state_string = "SUSP";
                else
                        switch (info.state & 0x1b)
                        {
                        case 0x01:
                                state_string = "SLEEP";
                                break;
                        case 0x02:
                                state_string = "CNTSLEEP";
                                break;
                        case 0x08:
                                state_string = "CREATE";
                                break;
                        case 0x10:
                                state_string = "EXIT";
                                break;
                        default:
                                state_string = "????";
                                break;
                        }

                Jim_ListAppendElement(interp, threadObj, Jim_NewStringObj(interp,
                                state_string, strlen(state_string)));

                Jim_ListAppendElement   (interp, threadObj, Jim_NewIntObj(interp, id));
                Jim_ListAppendElement(interp, threadObj, Jim_NewIntObj(interp, info.set_pri));
                Jim_ListAppendElement(interp, threadObj, Jim_NewIntObj(interp, info.cur_pri));

                Jim_ListAppendElement(interp, threads, threadObj);
        }
        Jim_SetResult( interp, threads);

        return JIM_OK;
}


static int
zylinjtag_Jim_Command_ls(Jim_Interp *interp,
                                   int argc,
                Jim_Obj * const *argv)
{
        if (argc != 2)
        {
                Jim_WrongNumArgs(interp, 1, argv, "ls ?dir?");
                return JIM_ERR;
        }

        char *name = (char*) Jim_GetString(argv[1], NULL);

        DIR *dirp = NULL;
        dirp = opendir(name);
        if (dirp == NULL)
        {
                return JIM_ERR;
        }
        Jim_Obj *objPtr = Jim_NewListObj(interp, NULL, 0);

        for (;;)
        {
                struct dirent *entry = NULL;
                entry = readdir(dirp);
                if (entry == NULL)
                        break;

                if ((strcmp(".", entry->d_name)==0)||(strcmp("..", entry->d_name)==0))
                        continue;

        Jim_ListAppendElement(interp, objPtr, Jim_NewStringObj(interp, entry->d_name, strlen(entry->d_name)));
        }
        closedir(dirp);

        Jim_SetResult(interp, objPtr);

        return JIM_OK;
}


static int
zylinjtag_Jim_Command_getmem(Jim_Interp *interp,
                                   int argc,
                Jim_Obj * const *argv)
{
        if (argc != 3)
        {
                Jim_WrongNumArgs(interp, 1, argv, "ls ?dir?");
                return JIM_ERR;
        }

        long address;
        long length;
        if (Jim_GetLong(interp, argv[1], &address) != JIM_OK)
                return JIM_ERR;
        if (Jim_GetLong(interp, argv[2], &length) != JIM_OK)
                return JIM_ERR;

        if (length < 0 && length > (4096 * 1024))
        {
                Jim_WrongNumArgs(interp, 1, argv, "getmem ?dir?");
                return JIM_ERR;
        }

        void *mem = malloc(length);
        if (mem == NULL)
                return JIM_ERR;

        target_t *target = get_current_target(cmd_ctx);

        int retval;
        int size = 1;
        int count = length;
        if ((address % 4 == 0) && (count % 4 == 0))
        {
                size = 4;
                count /= 4;
        }

        if ((retval  = target->type->read_memory(target, address, size, count, mem)) != ERROR_OK)
        {
                free(mem);
                return JIM_ERR;
        }

        Jim_Obj *objPtr = Jim_NewStringObj(interp, mem, length);
        Jim_SetResult(interp, objPtr);

        free(mem);

        return JIM_OK;
}

static int
zylinjtag_Jim_Command_peek(Jim_Interp *interp,
                                   int argc,
                Jim_Obj * const *argv)
{
        if (argc != 2)
        {
                Jim_WrongNumArgs(interp, 1, argv, "peek ?address?");
                return JIM_ERR;
        }

        long address;
        if (Jim_GetLong(interp, argv[1], &address) != JIM_OK)
                return JIM_ERR;

        int value = *((volatile int *) address);

        Jim_SetResult(interp, Jim_NewIntObj(interp, value));

        return JIM_OK;
}

static int
zylinjtag_Jim_Command_poke(Jim_Interp *interp,
                                   int argc,
                Jim_Obj * const *argv)
{
        if (argc != 3)
        {
                Jim_WrongNumArgs(interp, 1, argv, "poke ?address? ?value?");
                return JIM_ERR;
        }

        long address;
        if (Jim_GetLong(interp, argv[1], &address) != JIM_OK)
                return JIM_ERR;
        long value;
        if (Jim_GetLong(interp, argv[2], &value) != JIM_OK)
                return JIM_ERR;

        *((volatile int *) address) = value;

        return JIM_OK;
}



static int
zylinjtag_Jim_Command_flash(Jim_Interp *interp,
                                   int argc,
                Jim_Obj * const *argv)
{
        int retval;
        u32 base = 0;
        flash_bank_t *t = get_flash_bank_by_num_noprobe(0);
        if (t != NULL)
        {
                base = t->base;
                retval = JIM_OK;
    } else
        {
                retval = JIM_ERR;
        }

        if (retval == JIM_OK)
        {
                Jim_SetResult(interp, Jim_NewIntObj(interp, base));
        }

        return retval;
}





static int
zylinjtag_Jim_Command_log(Jim_Interp *interp,
                                   int argc,
                Jim_Obj * const *argv)
{
        Jim_Obj *tclOutput = Jim_NewStringObj(interp, "", 0);

        if (logCount >= logSize)
        {
        Jim_AppendString(httpstate.jim_interp, tclOutput, logBuffer+logCount%logSize, logSize-logCount%logSize);
        }
        Jim_AppendString(httpstate.jim_interp, tclOutput, logBuffer, writePtr);

        Jim_SetResult(interp, tclOutput);
        return JIM_OK;
}

static int
zylinjtag_Jim_Command_reboot(Jim_Interp *interp,
                                   int argc,
                Jim_Obj * const *argv)
{
        reboot();
        return JIM_OK;
}

static int
zylinjtag_Jim_Command_mac(Jim_Interp *interp,
                                   int argc,
                Jim_Obj * const *argv)
{
        int s;
        struct ifreq ifr;
        s = socket(AF_INET, SOCK_DGRAM, 0);
        if (s >= 0)
        {
                strcpy(ifr.ifr_name, "eth0");
                int res;
                res = ioctl(s, SIOCGIFHWADDR, &ifr);
                close(s);

                if (res < 0)
                {
                        return JIM_OK;
                }
        }

        Jim_Obj *tclOutput = Jim_NewStringObj(interp, "", 0);

        char hwaddr[512];
        sprintf(hwaddr, "%02x:%02x:%02x:%02x:%02x:%02x",
                        (int) ((unsigned char *) &ifr.ifr_hwaddr.sa_data)[0],
                        (int) ((unsigned char *) &ifr.ifr_hwaddr.sa_data)[1],
                        (int) ((unsigned char *) &ifr.ifr_hwaddr.sa_data)[2],
                        (int) ((unsigned char *) &ifr.ifr_hwaddr.sa_data)[3],
                        (int) ((unsigned char *) &ifr.ifr_hwaddr.sa_data)[4],
                        (int) ((unsigned char *) &ifr.ifr_hwaddr.sa_data)[5]);

        Jim_AppendString(httpstate.jim_interp, tclOutput, hwaddr, strlen(hwaddr));

        Jim_SetResult(interp, tclOutput);

        return JIM_OK;
}

static int
zylinjtag_Jim_Command_ip(Jim_Interp *interp,
                                   int argc,
                Jim_Obj * const *argv)
{
        Jim_Obj *tclOutput = Jim_NewStringObj(interp, "", 0);

        struct ifaddrs *ifa = NULL, *ifp = NULL;

        if (getifaddrs(&ifp) < 0)
        {
                return JIM_ERR;
        }

        for (ifa = ifp; ifa; ifa = ifa->ifa_next)
        {
                char ip[200];
                socklen_t salen;

                if (ifa->ifa_addr->sa_family == AF_INET)
                        salen = sizeof(struct sockaddr_in);
                else if (ifa->ifa_addr->sa_family == AF_INET6)
                        salen = sizeof(struct sockaddr_in6);
                else
                        continue;

                if (getnameinfo(ifa->ifa_addr, salen, ip, sizeof(ip), NULL, 0,
                                NI_NUMERICHOST) < 0)
                {
                        continue;
                }

                Jim_AppendString(httpstate.jim_interp, tclOutput, ip, strlen(ip));
                break;

        }

        freeifaddrs(ifp);

        Jim_SetResult(interp, tclOutput);

        return JIM_OK;
}

extern Jim_Interp *interp;

static void zylinjtag_startNetwork()
{
        // Bring TCP/IP up immediately before we're ready to accept commands.
        //
        // That is as soon as a PING responds, we're accepting telnet sessions.
#if defined(CYGPKG_NET_FREEBSD_STACK)
        phi_init_all_network_interfaces();
#else
        lwip_init();
#endif
        if (!eth0_up)
        {
                diag_printf("Network not up and running\n");
                exit(-1);
        }
#if defined(CYGPKG_NET_FREEBSD_STACK)
        /*start TFTP*/
        tftpd_start(69, &fileops);
#endif

        cyg_httpd_init_tcl_interpreter();

        interp = httpstate.jim_interp;

    Jim_CreateCommand(httpstate.jim_interp, "log", zylinjtag_Jim_Command_log, NULL, NULL);
    Jim_CreateCommand(httpstate.jim_interp, "reboot", zylinjtag_Jim_Command_reboot, NULL, NULL);
    Jim_CreateCommand(httpstate.jim_interp, "peek", zylinjtag_Jim_Command_peek, NULL, NULL);
    Jim_CreateCommand(httpstate.jim_interp, "zy1000_flash", zylinjtag_Jim_Command_flash, NULL, NULL);
    Jim_CreateCommand(httpstate.jim_interp, "poke", zylinjtag_Jim_Command_poke, NULL, NULL);
    Jim_CreateCommand(httpstate.jim_interp, "ls", zylinjtag_Jim_Command_ls, NULL, NULL);
    Jim_CreateCommand(httpstate.jim_interp, "threads", zylinjtag_Jim_Command_threads, NULL, NULL);
    Jim_CreateCommand(httpstate.jim_interp, "getmem", zylinjtag_Jim_Command_getmem, NULL, NULL);
    Jim_CreateCommand(httpstate.jim_interp, "mac", zylinjtag_Jim_Command_mac, NULL, NULL);
    Jim_CreateCommand(httpstate.jim_interp, "ip", zylinjtag_Jim_Command_ip, NULL, NULL);
    Jim_CreateCommand(httpstate.jim_interp, "rm", zylinjtag_Jim_Command_rm, NULL, NULL);

        cyg_httpd_start();

        webRunning = true;

        diag_printf("Web server running\n");
}

static bool readPowerDropout()
{
        cyg_uint32 state;
        // sample and clear power dropout
        HAL_WRITE_UINT32(0x08000010, 0x80);
        HAL_READ_UINT32(0x08000010, state);
        bool powerDropout;
        powerDropout = (state & 0x80) != 0;
        return powerDropout;
}

bool readSRST()
{
        cyg_uint32 state;
        // sample and clear SRST sensing
        HAL_WRITE_UINT32(0x08000010, 0x00000040);
        HAL_READ_UINT32(0x08000010, state);
        bool srstAsserted;
        srstAsserted = (state & 0x40) != 0;
        return srstAsserted;
}

// every 300ms we check for reset & powerdropout and issue a "reset halt" if
// so.


static int sense_handler(void *priv)
{
        struct command_context_s *cmd_ctx;
        cmd_ctx = (struct command_context_s *) priv;

        static bool prevSrstAsserted = false;
        static bool prevPowerdropout = false;

        bool powerDropout;
        powerDropout = readPowerDropout();

        bool powerRestored;
        powerRestored = prevPowerdropout && !powerDropout;
        if (powerRestored)
        {
                LOG_USER("Sensed power restore.");
        }

        cyg_tick_count_t current = cyg_current_time();
        static cyg_tick_count_t lastPower = 0;
        bool waitMore = lastPower + 200 > current;
        if (powerDropout && !waitMore)
        {
                LOG_USER("Sensed power dropout.");
                lastPower = current;
        }

        bool srstAsserted = readSRST();

        bool srstDeasserted;
        srstDeasserted = prevSrstAsserted && !srstAsserted;

        static cyg_tick_count_t lastSrst = 0;
        waitMore = lastSrst + 200 > current;
        if (srstDeasserted && !waitMore)
        {
                LOG_USER("Sensed nSRST deasserted");
                lastSrst = current;
        }

        if (!prevSrstAsserted && srstAsserted)
        {
                LOG_USER("Sensed nSRST asserted");
        }

        prevSrstAsserted = srstAsserted;
        prevPowerdropout = powerDropout;

        if (srstDeasserted || powerRestored)
        {
                /* Other than logging the event we can't do anything here.
                 * Issuing a reset is a particularly bad idea as we might
                 * be inside a reset already.
                 */
        }

        return ERROR_OK;
}



static void
print_exception_handler(cyg_addrword_t data, cyg_code_t exception, cyg_addrword_t info)
{
        writeLog = false;
        serialLog = true;
        char *infoStr = "unknown";
        switch (exception)
        {
        case CYGNUM_HAL_VECTOR_UNDEF_INSTRUCTION:
                infoStr = "undefined instruction";
                break;
        case CYGNUM_HAL_VECTOR_SOFTWARE_INTERRUPT:
                infoStr = "software interrupt";
                break;
        case CYGNUM_HAL_VECTOR_ABORT_PREFETCH:
                infoStr = "abort prefetch";
                break;
        case CYGNUM_HAL_VECTOR_ABORT_DATA:
                infoStr = "abort data";
                break;
        default:
                break;
        }

        diag_printf("Exception: %08x(%s) %08x\n", exception, infoStr, info);

        diag_printf("Dumping log\n---\n");
        if (logCount >= logSize)
        {
                diag_write(logBuffer + logCount % logSize, logSize - logCount % logSize);
        }
        diag_write(logBuffer, writePtr);

        diag_printf("---\nLogdump complete.\n");
        diag_printf("Exception: %08x(%s) %08x\n", exception, infoStr, info);
        diag_printf("\n---\nRebooting\n");
        HAL_PLATFORM_RESET();

}

static void setHandler(cyg_code_t exception)
{
        cyg_exception_handler_t *old_handler;
        cyg_addrword_t old_data;

        cyg_exception_set_handler(exception,
        print_exception_handler,
        0,
        &old_handler,
        &old_data);
}

static cyg_thread zylinjtag_uart_thread_object;
static cyg_handle_t zylinjtag_uart_thread_handle;
static char uart_stack[4096];

static char forwardBuffer[1024]; // NB! must be smaller than a TCP/IP packet!!!!!
static char backwardBuffer[1024];

static cyg_io_handle_t serial_handle;

void setNoDelay(int session, int flag)
{
#if 1
        // This decreases latency dramatically for e.g. GDB load which
        // does not have a sliding window protocol
        //
        // Can cause *lots* of TCP/IP packets to be sent and it would have
        // to be enabled/disabled on the fly to avoid the CPU being
        // overloaded...
        setsockopt(session, /* socket affected */
        IPPROTO_TCP, /* set option at TCP level */
        TCP_NODELAY, /* name of option */
        (char *) &flag, /* the cast is historical
         cruft */
        sizeof(int)); /* length of option value */
#endif
}

struct
{
        int req;
        int actual;
        int req2;
        int actual2;
} tcpipSent[512 * 1024];
int cur;

static void
zylinjtag_uart(cyg_addrword_t data)
{
        int so_reuseaddr_option = 1;

        int fd;
        if ((fd = socket(AF_INET, SOCK_STREAM, 0)) == -1)
        {
                LOG_ERROR("error creating socket: %s", strerror(errno));
                exit(-1);
        }

        setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (void*)&so_reuseaddr_option, sizeof(int));

        struct sockaddr_in sin;
        unsigned int address_size;
        address_size = sizeof(sin);
        memset(&sin, 0, sizeof(sin));
        sin.sin_family = AF_INET;
        sin.sin_addr.s_addr = INADDR_ANY;
        sin.sin_port = htons(5555);

        if (bind(fd, (struct sockaddr *) &sin, sizeof(sin)) == -1)
        {
                LOG_ERROR("couldn't bind to socket: %s", strerror(errno));
                exit(-1);
        }

        if (listen(fd, 1) == -1)
        {
                LOG_ERROR("couldn't listen on socket: %s", strerror(errno));
                exit(-1);
        }
        //      socket_nonblock(fd);


        for (;;)
        {
                int session = accept(fd, (struct sockaddr *) &sin, &address_size);
                if (session < 0)
                {
                        continue;
                }

                setNoDelay(session, 1);
                int oldopts = fcntl(session, F_GETFL, 0);
                fcntl(session, F_SETFL, oldopts | O_NONBLOCK); //

                int serHandle = open("/dev/ser0", O_RDWR | O_NONBLOCK);
                if (serHandle < 0)
                {
                        close(session);
                        continue;
                }

                start_profile();
                int actual = 0;
                int actual2 = 0;
                int pos, pos2;
                pos = 0;
                pos2 = 0;
                cur = 0;
                for (;;)
                {
                        fd_set write_fds;
                        fd_set read_fds;
                        FD_ZERO(&write_fds);
                        FD_ZERO(&read_fds);
                        int fd_max = -1;
                        FD_SET(session, &read_fds);
                        fd_max = session;
                        FD_SET(serHandle, &read_fds);
                        if (serHandle > fd_max)
                        {
                                fd_max = serHandle;
                        }
                        /* Wait... */

                        cyg_thread_delay(5); // 50ms fixed delay to wait for data to be sent/received
                        if ((actual == 0) && (actual2 == 0))
                        {
                                int retval = select(fd_max + 1, &read_fds, NULL, NULL, NULL);
                                if (retval <= 0)
                                {
                                        break;
                                }
                        }

                        if (actual2 <= 0)
                        {
                                memset(backwardBuffer, 's', sizeof(backwardBuffer));
                                actual2=read(serHandle, backwardBuffer, sizeof(backwardBuffer));
                                if (actual2 < 0)
                                {
                                        if (errno != EAGAIN)
                                        {
                                                goto closeSession;
                                        }
                                        actual2 = 0;
                                }
                                pos2 = 0;
                        }

                        int x = actual2;
                        int y = 0;
                        if (actual2 > 0)
                        {
                                int written = write(session, backwardBuffer + pos2, actual2);
                                if (written <= 0)
                                        goto closeSession;
                                actual2 -= written;
                                pos2 += written;
                                y = written;
                        }

                        if (FD_ISSET(session, &read_fds)&&(sizeof(forwardBuffer)>actual))
                        {
                                // NB! Here it is important that we empty the TCP/IP read buffer
                                // to make transmission tick right
                                memmove(forwardBuffer, forwardBuffer + pos, actual);
                                pos = 0;
                                int t;
                                // this will block if there is no data at all
                                t=read_socket(session, forwardBuffer+actual, sizeof(forwardBuffer)-actual);
                                if (t <= 0)
                                {
                                        goto closeSession;
                                }
                                actual += t;
                        }

                        int x2 = actual;
                        int y2 = 0;
                        if (actual > 0)
                        {
                                /* Do not put things into the serial buffer if it has something to send
                                 * as that can cause a single byte to be sent at the time.
                                 *
                                 *
                                 */
                                int written = write(serHandle, forwardBuffer + pos, actual);
                                if (written < 0)
                                {
                                        if (errno != EAGAIN)
                                        {
                                                goto closeSession;
                                        }
                                        // The serial buffer is full
                                        written = 0;
                                } else
                                {
                                        actual -= written;
                                        pos += written;
                                }
                                y2 = written;
                        }
                        if (cur < 1024)
                        {
                                tcpipSent[cur].req = x;
                                tcpipSent[cur].actual = y;
                                tcpipSent[cur].req2 = x2;
                                tcpipSent[cur].actual2 = y2;
                                cur++;
                        }

                }
            closeSession:
            close(session);
                close(serHandle);

                int i;
                for (i = 0; i < 1024; i++)
                {
                diag_printf("%d %d %d %d\n", tcpipSent[i].req, tcpipSent[i].actual, tcpipSent[i].req2, tcpipSent[i].actual2);

                }
        }
        close(fd);

}

void startUart(void)
{
    cyg_thread_create(1,
                      zylinjtag_uart,
                      (cyg_addrword_t)0,
                      "uart thread",
                      (void *)uart_stack,
                      sizeof(uart_stack),
                      &zylinjtag_uart_thread_handle,
                      &zylinjtag_uart_thread_object);
        cyg_thread_set_priority(zylinjtag_uart_thread_handle, 1); // low priority as it sits in a busy loop
        cyg_thread_resume(zylinjtag_uart_thread_handle);
}



int handle_uart_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
        if (argc != 1)
        {
                command_print(cmd_ctx, "usage: uart <baudrate>");
                return ERROR_INVALID_ARGUMENTS;
        }

        int baud = atol(args[0]);

        switch (baud)
        {
        case 9600:
                baud = CYGNUM_SERIAL_BAUD_9600;
                break;
        case 19200:
                baud = CYGNUM_SERIAL_BAUD_19200;
                break;
        case 38400:
                baud = CYGNUM_SERIAL_BAUD_38400;
                break;
        case 57600:
                baud = CYGNUM_SERIAL_BAUD_57600;
                break;
        case 115200:
                baud = CYGNUM_SERIAL_BAUD_115200;
                break;
        case 230400:
                baud = CYGNUM_SERIAL_BAUD_230400;
                break;
        default:
                command_print(cmd_ctx, "unsupported baudrate");
                return ERROR_INVALID_ARGUMENTS;
        }

        cyg_serial_info_t buf;
        cyg_uint32 len = 1;
        //get existing serial configuration
        len = sizeof(cyg_serial_info_t);
        int err;
        err = cyg_io_get_config(serial_handle, CYG_IO_GET_CONFIG_SERIAL_OUTPUT_DRAIN, &buf, &len);
        err = cyg_io_get_config(serial_handle, CYG_IO_GET_CONFIG_SERIAL_INFO, &buf, &len);
        if (err != ENOERR)
        {
                command_print(cmd_ctx, "Failed to get serial port settings %d", err);
                return ERROR_OK;
        }
        buf.baud = baud;

        err = cyg_io_set_config(serial_handle, CYG_IO_SET_CONFIG_SERIAL_INFO, &buf, &len);
        if (err != ENOERR)
        {
                command_print(cmd_ctx, "Failed to set serial port settings %d", err);
                return ERROR_OK;
        }

        return ERROR_OK;
}

bool logAllToSerial = false;

/* boolean parameter stored on config */
bool boolParam(char *var)
{
        bool result = false;
        char *name = alloc_printf(ZYLIN_CONFIG_DIR "/%s", var);
        if (name == NULL)
                return result;

        void *data;
        int len;
        if (loadFile(name, &data, &len) == ERROR_OK)
        {
                if (len > 1)
                        len = 1;
                result = strncmp((char *) data, "1", len) == 0;
                free(data);
        }
        free(name);
        return result;
}

command_context_t *setup_command_handler();

int add_default_dirs(void)
{
        add_script_search_dir(ZYLIN_CONFIG_DIR);
        add_script_search_dir("/rom/lib/openocd");
        add_script_search_dir("/rom");
        return ERROR_OK;
}

int main(int argc, char *argv[])
{
        setHandler(CYGNUM_HAL_VECTOR_UNDEF_INSTRUCTION);
        setHandler(CYGNUM_HAL_VECTOR_ABORT_PREFETCH);
        setHandler(CYGNUM_HAL_VECTOR_ABORT_DATA);

        int err;
        err = cyg_io_lookup("/dev/ser0", &serial_handle);
        if (err != ENOERR)
        {
                diag_printf("/dev/ser0 not found\n");
                reboot();
        }

        setPower(true); // on by default

        atexit(keep_webserver);

        err = mount("", "/ram", "ramfs");
        if (err < 0)
        {
                diag_printf("unable to mount ramfs\n");
        }
        chdir("/ram");

        char address[16];
        sprintf(address, "%p", &filedata[0]);
        err = mount(address, "/rom", "romfs");
        if (err < 0)
        {
                diag_printf("unable to mount /rom\n");
        }

        err = mount("", "/log", "logfs");
        if (err < 0)
        {
                diag_printf("unable to mount logfs\n");
        }

        err = mount("", "/tftp", "tftpfs");
        if (err < 0)
        {
                diag_printf("unable to mount logfs\n");
        }

        log = fopen("/log/log", "w");
        if (log == NULL)
        {
                diag_printf("Could not open log file /ram/log\n");
                exit(-1);
        }

        diag_init_putc(_zylinjtag_diag_write_char);

        // We want this in the log.
        diag_printf("Zylin ZY1000. Copyright Zylin AS 2007-2008.\n");
        diag_printf("%s\n", ZYLIN_OPENOCD_VERSION);

        copydir("/rom/");

        err = mount("/dev/flash1", "/config", "jffs2");
        if (err < 0)
        {
                diag_printf("unable to mount jffs\n");
        }


        mkdir(ZYLIN_CONFIG_DIR, 0777);
        mkdir(ZYLIN_CONFIG_DIR "/target", 0777);
        mkdir(ZYLIN_CONFIG_DIR "/event", 0777);

        logAllToSerial = boolParam("logserial");

        // We need the network & web server in case there is something wrong with
        // the config files that invoke exit()
        zylinjtag_startNetwork();

        /* we're going to access the jim interpreter from here on... */
        openocd_sleep_postlude();
        startUart();

        add_default_dirs();

        /* initialize commandline interface */
        command_context_t *cmd_ctx;
        cmd_ctx = setup_command_handler();
        command_set_output_handler(cmd_ctx, configuration_output_handler, NULL);
        command_context_mode(cmd_ctx, COMMAND_CONFIG);


        register_command(cmd_ctx, NULL, "zy1000_version", handle_zy1000_version_command,
                        COMMAND_EXEC, "show zy1000 version numbers");

        register_command(cmd_ctx, NULL, "rm", handle_rm_command, COMMAND_ANY,
                        "rm <filname>");

        register_command(cmd_ctx, NULL, "fast_load_image", handle_fast_load_image_command, COMMAND_ANY,
                        "same args as load_image, image stored in memory");

        register_command(cmd_ctx, NULL, "fast_load", handle_fast_load_command, COMMAND_ANY,
                        "loads active fast load image to current target");

        register_command(cmd_ctx, NULL, "cat", handle_cat_command, COMMAND_ANY,
                        "cat <filname>");

        register_command(cmd_ctx, NULL, "trunc", handle_trunc_command, COMMAND_ANY,
                        "trunc <filname>");

        register_command(cmd_ctx, NULL, "append_file", handle_append_command,
                        COMMAND_ANY, "append <filname>");

        register_command(cmd_ctx, NULL, "power", handle_power_command, COMMAND_ANY,
                        "power <on/off> - turn power switch to target on/off. No arguments - print status.");

        register_command(cmd_ctx, NULL, "meminfo", handle_meminfo_command,
                        COMMAND_ANY, "meminfo");

        register_command(cmd_ctx, NULL, "cp", handle_cp_command,
                                         COMMAND_ANY, "cp <from> <to>");

#ifdef CYGPKG_PROFILE_GPROF
        register_command(cmd_ctx, NULL, "ecosboard_profile", eCosBoard_handle_eCosBoard_profile_command,
                        COMMAND_ANY, NULL);
#endif
        register_command(cmd_ctx, NULL, "uart", handle_uart_command,
                                         COMMAND_ANY, "uart <baud>  - forward uart on port 5555");


        int errVal;
        errVal = log_init(cmd_ctx);
        if (errVal != ERROR_OK)
        {
                diag_printf("log_init() failed %d\n", errVal);
                exit(-1);
        }

        set_log_output(cmd_ctx, log);

        LOG_DEBUG("log init complete");

        //      diag_printf("Executing config files\n");

        if (logAllToSerial)
        {
                diag_printf(ZYLIN_CONFIG_DIR "/logserial=1 => sending log output to serial port using \"debug_level 3\" as default.\n");
                command_run_line(cmd_ctx, "debug_level 3");
        }

        zylinjtag_parse_config_file(cmd_ctx, "/rom/openocd.cfg");

        target_register_timer_callback(sense_handler, 200, 1, cmd_ctx);

        // FIX!!!  Yuk!
        // diag_printf() is really invoked from many more places than we trust it
        // not to cause instabilities(e.g. invoking fputc() from an interrupt is *BAD*).
        //
        // Disabling it here is safe and gives us enough logged debug output for now. Crossing
        // fingers that it doesn't cause any crashes.
        diag_printf("Init complete, GDB & telnet servers launched.\n");
        command_set_output_handler(cmd_ctx, zy1000_configuration_output_handler_log, NULL);
        if (!logAllToSerial)
        {
                serialLog = false;
        }

        /* handle network connections */
        server_loop(cmd_ctx);
        openocd_sleep_prelude();

        /* shut server down */
        server_quit();

        /* free commandline interface */
        command_done(cmd_ctx);
        umount("/config");

        exit(0);
        for (;;);
}



cyg_int32
cyg_httpd_exec_cgi_tcl(char *file_name);
cyg_int32 homeForm(CYG_HTTPD_STATE *p)
{
        cyg_httpd_exec_cgi_tcl("/ram/cgi/index.tcl");
        return 0;
}

CYG_HTTPD_HANDLER_TABLE_ENTRY(root_label, "/", homeForm);

CYG_HTTPD_MIME_TABLE_ENTRY(text_mime_label, "text", "text/plain");
CYG_HTTPD_MIME_TABLE_ENTRY(bin_mime_label, "bin", "application/octet-stream");

#include <pkgconf/system.h>
#include <pkgconf/hal.h>
#include <pkgconf/kernel.h>
#include <pkgconf/io_fileio.h>
#include <pkgconf/fs_rom.h>

#include <cyg/kernel/ktypes.h>         // base kernel types
#include <cyg/infra/cyg_trac.h>        // tracing macros
#include <cyg/infra/cyg_ass.h>         // assertion macros
#include <unistd.h>
#include <sys/types.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <errno.h>
#include <dirent.h>

#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include <cyg/fileio/fileio.h>

#include <cyg/kernel/kapi.h>
#include <cyg/infra/diag.h>

//==========================================================================
// Eventually we want to eXecute In Place from the ROM in a protected
// environment, so we'll need executables to be aligned to a boundary
// suitable for MMU protection. A suitable boundary would be the 4k
// boundary in all the CPU architectures I am currently aware of.

// Forward definitions

// Filesystem operations
static int tftpfs_mount(cyg_fstab_entry *fste, cyg_mtab_entry *mte);
static int tftpfs_umount(cyg_mtab_entry *mte);
static int tftpfs_open(cyg_mtab_entry *mte, cyg_dir dir, const char *name,
                int mode, cyg_file *fte);
static int tftpfs_fo_read(struct CYG_FILE_TAG *fp, struct CYG_UIO_TAG *uio);
static int tftpfs_fo_write(struct CYG_FILE_TAG *fp, struct CYG_UIO_TAG *uio);

// File operations
static int tftpfs_fo_fsync(struct CYG_FILE_TAG *fp, int mode);
static int tftpfs_fo_close(struct CYG_FILE_TAG *fp);
static int tftpfs_fo_lseek(struct CYG_FILE_TAG *fp, off_t *apos, int whence);

//==========================================================================
// Filesystem table entries

// -------------------------------------------------------------------------
// Fstab entry.
// This defines the entry in the filesystem table.
// For simplicity we use _FILESYSTEM synchronization for all accesses since
// we should never block in any filesystem operations.
#if 1
FSTAB_ENTRY( tftpfs_fste, "tftpfs", 0,
                CYG_SYNCMODE_NONE,
                tftpfs_mount,
                tftpfs_umount,
                tftpfs_open,
                (cyg_fsop_unlink *)cyg_fileio_erofs,
                (cyg_fsop_mkdir *)cyg_fileio_erofs,
                (cyg_fsop_rmdir *)cyg_fileio_erofs,
                (cyg_fsop_rename *)cyg_fileio_erofs,
                (cyg_fsop_link *)cyg_fileio_erofs,
                (cyg_fsop_opendir *)cyg_fileio_erofs,
                (cyg_fsop_chdir *)cyg_fileio_erofs,
                (cyg_fsop_stat *)cyg_fileio_erofs,
                (cyg_fsop_getinfo *)cyg_fileio_erofs,
                (cyg_fsop_setinfo *)cyg_fileio_erofs);
#endif

// -------------------------------------------------------------------------
// mtab entry.
// This defines a single ROMFS loaded into ROM at the configured address
//
// MTAB_ENTRY(  rom_mte,        // structure name
//              "/rom",         // mount point
//              "romfs",        // FIlesystem type
//              "",             // hardware device
//  (CYG_ADDRWORD) CYGNUM_FS_ROM_BASE_ADDRESS   // Address in ROM
//           );


// -------------------------------------------------------------------------
// File operations.
// This set of file operations are used for normal open files.

static cyg_fileops tftpfs_fileops =
{
        tftpfs_fo_read,
        tftpfs_fo_write,
        tftpfs_fo_lseek,
        (cyg_fileop_ioctl *)cyg_fileio_erofs,
    cyg_fileio_seltrue,
    tftpfs_fo_fsync,
    tftpfs_fo_close,
                (cyg_fileop_fstat *) cyg_fileio_erofs,
                (cyg_fileop_getinfo *) cyg_fileio_erofs,
        (cyg_fileop_setinfo *)cyg_fileio_erofs,
};

// -------------------------------------------------------------------------
// tftpfs_mount()
// Process a mount request. This mainly finds root for the
// filesystem.

static int tftpfs_mount(cyg_fstab_entry *fste, cyg_mtab_entry *mte)
{
        return ENOERR;
}

static int tftpfs_umount(cyg_mtab_entry *mte)
{
        return ENOERR;
}

struct Tftp
{
        int write;
        int readFile;
        cyg_uint8 *mem;
        int actual;
        char *server;
        char *file;
};

static void freeTftp(struct Tftp *t)
{
        if (t == NULL)
                return;
        if (t->mem)
                free(t->mem);
        if (t->server)
                free(t->server);
        if (t->file)
                free(t->file);
        free(t);
}

static const int tftpMaxSize = 8192 * 1024;
static int tftpfs_open(cyg_mtab_entry *mte, cyg_dir dir, const char *name,
                int mode, cyg_file *file)
{
        struct Tftp *tftp;
        tftp = malloc(sizeof(struct Tftp));
        if (tftp == NULL)
                return EMFILE;
        memset(tftp, 0, sizeof(struct Tftp));

        file->f_flag |= mode & CYG_FILE_MODE_MASK;
        file->f_type = CYG_FILE_TYPE_FILE;
        file->f_ops = &tftpfs_fileops;
        file->f_offset = 0;
        file->f_data = 0;
        file->f_xops = 0;

        tftp->mem = malloc(tftpMaxSize);
        if (tftp->mem == NULL)
        {
                freeTftp(tftp);
                return EMFILE;
        }

        char *server = strchr(name, '/');
        if (server == NULL)
        {
                freeTftp(tftp);
                return EMFILE;
        }

        tftp->server = malloc(server - name + 1);
        if (tftp->server == NULL)
        {
                freeTftp(tftp);
                return EMFILE;
        }
        strncpy(tftp->server, name, server - name);
        tftp->server[server - name] = 0;

        tftp->file = strdup(server + 1);
        if (tftp->file == NULL)
        {
                freeTftp(tftp);
                return EMFILE;
        }

        file->f_data = (CYG_ADDRWORD) tftp;

        return ENOERR;
}

static int fetchTftp(struct Tftp *tftp)
{
        if (!tftp->readFile)
        {
                int err;
            tftp->actual = tftp_client_get( tftp->file, tftp->server, 0, tftp->mem, tftpMaxSize,   TFTP_OCTET, &err);

                if (tftp->actual < 0)
                {
                        return EMFILE;
                }
                tftp->readFile = 1;
        }
        return ENOERR;
}

// -------------------------------------------------------------------------
// tftpfs_fo_write()
// Read data from file.

static int
tftpfs_fo_read(struct CYG_FILE_TAG *fp, struct CYG_UIO_TAG *uio)
{
        struct Tftp *tftp = (struct Tftp *) fp->f_data;

        if (fetchTftp(tftp) != ENOERR)
                return EMFILE;

        int i;
        off_t pos = fp->f_offset;
        int resid = 0;
        for (i = 0; i < uio->uio_iovcnt; i++)
        {
                cyg_iovec *iov = &uio->uio_iov[i];
                char *buf = (char *) iov->iov_base;
                off_t len = iov->iov_len;

                if (len + pos > tftp->actual)
                {
                        len = tftp->actual - pos;
                }
                resid += iov->iov_len - len;

                memcpy(buf, tftp->mem + pos, len);
                pos += len;

        }
        uio->uio_resid = resid;
        fp->f_offset = pos;

        return ENOERR;
}


static int
tftpfs_fo_write(struct CYG_FILE_TAG *fp, struct CYG_UIO_TAG *uio)
{
        struct Tftp *tftp = (struct Tftp *) fp->f_data;

        int i;
        off_t pos = fp->f_offset;
        int resid = 0;
        for (i = 0; i < uio->uio_iovcnt; i++)
        {
                cyg_iovec *iov = &uio->uio_iov[i];
                char *buf = (char *) iov->iov_base;
                off_t len = iov->iov_len;

                if (len + pos > tftpMaxSize)
                {
                        len = tftpMaxSize - pos;
                }
                resid += iov->iov_len - len;

                memcpy(tftp->mem + pos, buf, len);
                pos += len;

        }
        uio->uio_resid = resid;
        fp->f_offset = pos;

        tftp->write = 1;

        return ENOERR;
}

static int
tftpfs_fo_fsync(struct CYG_FILE_TAG *fp, int mode)
{
        int error = ENOERR;
        return error;
}

// -------------------------------------------------------------------------
// romfs_fo_close()
// Close a file. We just clear out the data pointer.

static int tftpfs_fo_close(struct CYG_FILE_TAG *fp)
{
        struct Tftp *tftp = (struct Tftp *) fp->f_data;
        int error = ENOERR;

        if (tftp->write)
        {
            tftp_client_put( tftp->file, tftp->server, 0, tftp->mem, fp->f_offset,   TFTP_OCTET, &error);
        }

        freeTftp(tftp);
        fp->f_data = 0;
        return error;
}

// -------------------------------------------------------------------------
// romfs_fo_lseek()
// Seek to a new file position.

static int tftpfs_fo_lseek(struct CYG_FILE_TAG *fp, off_t *apos, int whence)
{
        struct Tftp *tftp = (struct Tftp *) fp->f_data;
        off_t pos = *apos;

        if (fetchTftp(tftp) != ENOERR)
                return EMFILE;

        switch (whence)
        {
        case SEEK_SET:
                // Pos is already where we want to be.
                break;

        case SEEK_CUR:
                // Add pos to current offset.
                pos += fp->f_offset;
                break;

        case SEEK_END:
                // Add pos to file size.
                pos += tftp->actual;
                break;

        default:
                return EINVAL;
        }

        // Check that pos is still within current file size, or at the
        // very end.
        if (pos < 0 || pos > tftp->actual)
                return EINVAL;

        // All OK, set fp offset and return new position.
        *apos = fp->f_offset = pos;

        return ENOERR;
}

void usleep(int us)
{
        if (us > 10000)
                cyg_thread_delay(us / 10000 + 1);
        else
                HAL_DELAY_US(us);
}

// Chunked version.
cyg_int32
show_log_entry(CYG_HTTPD_STATE *phttpstate)
{
        cyg_httpd_start_chunked("text");
        if (logCount >= logSize)
        {
        cyg_httpd_write_chunked(logBuffer+logCount%logSize, logSize-logCount%logSize);
        }
        cyg_httpd_write_chunked(logBuffer, writePtr);
        cyg_httpd_end_chunked();
        return -1;
}

CYG_HTTPD_HANDLER_TABLE_ENTRY(show_log, "/ram/log", show_log_entry);

// Filesystem operations
static int logfs_mount(cyg_fstab_entry *fste, cyg_mtab_entry *mte);
static int logfs_umount(cyg_mtab_entry *mte);
static int logfs_open(cyg_mtab_entry *mte, cyg_dir dir, const char *name,
                int mode, cyg_file *fte);
static int
logfs_fo_write(struct CYG_FILE_TAG *fp, struct CYG_UIO_TAG *uio);

// File operations
static int logfs_fo_fsync(struct CYG_FILE_TAG *fp, int mode);
static int logfs_fo_close(struct CYG_FILE_TAG *fp);

//==========================================================================
// Filesystem table entries

// -------------------------------------------------------------------------
// Fstab entry.
// This defines the entry in the filesystem table.
// For simplicity we use _FILESYSTEM synchronization for all accesses since
// we should never block in any filesystem operations.
FSTAB_ENTRY( logfs_fste, "logfs", 0,
                CYG_SYNCMODE_FILE_FILESYSTEM|CYG_SYNCMODE_IO_FILESYSTEM,
                logfs_mount,
                logfs_umount,
                logfs_open,
                (cyg_fsop_unlink *)cyg_fileio_erofs,
                (cyg_fsop_mkdir *)cyg_fileio_erofs,
                (cyg_fsop_rmdir *)cyg_fileio_erofs,
                (cyg_fsop_rename *)cyg_fileio_erofs,
                (cyg_fsop_link *)cyg_fileio_erofs,
                (cyg_fsop_opendir *)cyg_fileio_erofs,
                (cyg_fsop_chdir *)cyg_fileio_erofs,
                (cyg_fsop_stat *)cyg_fileio_erofs,
                (cyg_fsop_getinfo *)cyg_fileio_erofs,
                (cyg_fsop_setinfo *)cyg_fileio_erofs);

// -------------------------------------------------------------------------
// File operations.
// This set of file operations are used for normal open files.

static cyg_fileops logfs_fileops =
{
        (cyg_fileop_read *)cyg_fileio_erofs,
    (cyg_fileop_write *)logfs_fo_write,
                (cyg_fileop_lseek *) cyg_fileio_erofs,
        (cyg_fileop_ioctl *)cyg_fileio_erofs,
    cyg_fileio_seltrue,
    logfs_fo_fsync,
    logfs_fo_close,
        (cyg_fileop_fstat *)cyg_fileio_erofs,
                (cyg_fileop_getinfo *) cyg_fileio_erofs,
        (cyg_fileop_setinfo *)cyg_fileio_erofs,
};

// -------------------------------------------------------------------------
// logfs_mount()
// Process a mount request. This mainly finds root for the
// filesystem.

static int logfs_mount(cyg_fstab_entry *fste, cyg_mtab_entry *mte)
{
        return ENOERR;
}

static int logfs_umount(cyg_mtab_entry *mte)
{
        return ENOERR;
}

static int logfs_open(cyg_mtab_entry *mte, cyg_dir dir, const char *name,
                int mode, cyg_file *file)
{
        file->f_flag |= mode & CYG_FILE_MODE_MASK;
        file->f_type = CYG_FILE_TYPE_FILE;
        file->f_ops = &logfs_fileops;
        file->f_offset = 0;
        file->f_data = 0;
        file->f_xops = 0;
        return ENOERR;
}

// -------------------------------------------------------------------------
// logfs_fo_write()
// Write data to file.

static int
logfs_fo_write(struct CYG_FILE_TAG *fp, struct CYG_UIO_TAG *uio)
{
        int i;
        for (i = 0; i < uio->uio_iovcnt; i++)
        {
                cyg_iovec *iov = &uio->uio_iov[i];
                char *buf = (char *) iov->iov_base;
                off_t len = iov->iov_len;

                diag_write(buf, len);
        }
        uio->uio_resid = 0;

        return ENOERR;
}
static int
logfs_fo_fsync(struct CYG_FILE_TAG *fp, int mode)
{
        return ENOERR;
}

// -------------------------------------------------------------------------
// romfs_fo_close()
// Close a file. We just clear out the data pointer.

static int logfs_fo_close(struct CYG_FILE_TAG *fp)
{
        return ENOERR;
}