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1655 giacomo 1
/*
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 * Project: HARTIK (HA-rd R-eal TI-me K-ernel)
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 *
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 * Coordinators: Giorgio Buttazzo <giorgio@sssup.it>
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 *               Gerardo Lamastra <gerardo@sssup.it>
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 *
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 * Authors     : Massimiliano Giorgi <massy@hartik.sssup.it>
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 * (see authors.txt for full list of hartik's authors)
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 *
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 * ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy)
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 *
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 * http://www.sssup.it
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 * http://retis.sssup.it
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 * http://hartik.sssup.it
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 */
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/*
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 * Copyright (C) 2000 Massimiliano Giorgi
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 *
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 * This program is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation; either version 2 of the License, or
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 * (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program; if not, write to the Free Software
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 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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 *
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 */
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/*
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 * CVS :        $Id: hello.c,v 1.1.1.1 2004-05-24 18:03:44 giacomo Exp $
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 *
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 * File:        $File$
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 * Revision:    $Revision: 1.1.1.1 $
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 * Last update: $Date: 2004-05-24 18:03:44 $
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 */
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/*
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 * Example of tracer initialization.
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 */
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#include <ll/i386/cons.h>
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#include <kernel/func.h>
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#include <tracer.h>
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#include <fs/bdevinit.h>
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#include <fs/fsinit.h>
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#include <fs/bdev.h>
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#include <drivers/keyb.h>
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#include <trace.h>
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#include <queues.h>
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#include <sys/mount.h>
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#include <stddef.h>
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/*
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  this example use initfs.c to initialize the system; this file define
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  the following two function.
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  __kernel_register_levels__(), must initialize all kernel modules,
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  it has this structure:
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  {
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    __register_sub_init_prologue();
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    ... modules initialization....
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    __register_sub_init();
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  }
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  __init__(void *arg) is called when the first task is created
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  and must call the main():
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  {
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    ... drivers initialization ....
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    __bdev_sub_init();
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    __fs_sub_init();
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    call_main()
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  }
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 */
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/*
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 * This function is called before all other modules initialization because
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 * all modules that need the tracer must follow tracer initialization.
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 */
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int __register_sub_init_prologue(void)
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{
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  /* the first functions to call... parameters can be passed */
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  TRC_init_phase1(NULL);
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  /* all the tracer queues must be registrated (in this case only */
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  /* a dummy queue is initialized) */
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  trc_register_dummy_queue();
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  /* the queues must be created (only one in this example) */
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  trc_create_queue(TRC_DUMMY_QUEUE,NULL);
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  /* events can be dispatch to a queue (nothing in this case) */
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  return 0;
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}
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/*
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 * This function is called after all other modules initialization
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 * functions... notjing to do.
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 */
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int __register_sub_init(void)
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{
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  return 0;
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}
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__dev_t root_device;
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__dev_t temp_device;
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/*
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 * Now the system is running... we have to initialize the block device
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 * drivers
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 */
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int __bdev_sub_init(void)
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{
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  BDEV_PARMS bdev=BASE_BDEV;
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  /* This to initialize the block device drivers... a NULL can be passed */
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  /* to the bdev_init() functions */
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  bdev_def_showinfo(bdev,FALSE);
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  bdev_init(&bdev);
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  /* The following phase ca be made in several way: we must decide the  */
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  /* device that we want mount as root... we use the bdev_find_byname() */
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  /* functions to find a specific device */
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  root_device=bdev_find_byname("ide/hda1");
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  if (root_device<0) {
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    cprintf("can't find root device to mount on /!!!\n");
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    sys_end();
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    return -1;
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  }
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  /* Well, we want a device to mount into /TEMP */
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  temp_device=bdev_find_byname("ide/hdb3");
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  if (temp_device<0) {
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    cprintf("can't find a filesystem to mount on /TEMP!!!\n");
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    sys_end();
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    return -1;
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  }
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  return 0;
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}
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/*
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 * This is the real filesystem initialization!
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 */
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int __fs_sub_init(void)
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{
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  FILESYSTEM_PARMS fs=BASE_FILESYSTEM;
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  extern int libc_initialize(void);
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  int res;
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  struct mount_opts opts;
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  /* We set the root device and call the filesystem_init() function */
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  filesystem_def_rootdevice(fs,root_device);
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  filesystem_def_fs(fs,FS_MSDOS);
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  filesystem_def_showinfo(fs,FALSE);
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  filesystem_init(&fs);
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  /* We must initialize the libC if we use it */
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  libc_initialize();
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  /* We have choose to mount the second partiotion into the /TEMP */
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  /* directory with read/write privilegies (this step is not required) */
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  if (temp_device>=0) {
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    memset(&opts,0,sizeof(struct mount_opts));
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    opts.flags=MOUNT_FLAG_RW;
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    res=mount(temp_device,FS_MSDOS,"/TEMP",&opts);
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    if (res!=0) {
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      cprintf("can't mount XXX on /TEMP (errno: %i)\n",errno);
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    }
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  }
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  /* NOW we call the tracer initialization phase 2!!! */
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  /* It must FOLLOW the filesystem initialization... (this function */
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  /* can be called after the call to filesystem_init() functions but */
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  /* we do it here because we want be able to write into the /TEMP */
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  /* directory! */
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  TRC_init_phase2();
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  return 0;
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}
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void ctrlc_exit(KEY_EVT *k)
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{
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  sys_end();
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}
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int main(int argc,char *argv[])
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{
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  cprintf("\nHello, world!\n");
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  return 0;
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}