kernel/core/init.c

   1 /*
   2  *  ZeX/OS
   3  *  Copyright (C) 2007  Tomas 'ZeXx86' Jedrzejek (zexx86@gmail.com)
   4  *  Copyright (C) 2008  Tomas 'ZeXx86' Jedrzejek (zexx86@gmail.com)
   5  *  Copyright (C) 2009  Tomas 'ZeXx86' Jedrzejek (zexx86@gmail.com)
   6  *
   7  *  This program is free software: you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation, either version 3 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21 #include <system.h>
  22 #include <string.h>
  23 #include <arch/io.h>
  24 #include <config.h>
  25 #include <env.h>
  26 #include <dev.h>
  27 #include <vfs.h>
  28 #include <user.h>
  29 #include <tty.h>
  30 #include <proc.h>
  31 #include <partition.h>
  32 #include <net/if.h>
  33 #include <net/socket.h>
  34 #include <net/packet.h>
  35 #include <sound/audio.h>
  36 #include <module.h>
  37 #include <commands.h>
  38 #include <console.h>
  39 #include <paging.h>
  40 #include <errno.h>
  41 #include <smp.h>
  42 #include <build.h>
  43 #include <its.h>
  44 #include <fs.h>
  45 #include <fd.h>
  46
  47 /* Command structure */
  48 typedef unsigned int (init_handler_t) ();
  49
  50 /* OS information stamp */
  51 void osinfo ()
  52 {
  53         video_color (14, 0);
  54         kprintf ("ZeX/OS");
  55         video_color (7, 0);
  56         kprintf (" v" ZEXOS_MAJOR "." ZEXOS_MINOR "." ZEXOS_REVISION " " ZEXOS_DATE " " ZEXOS_ARCH " " ZEXOS_COMPILER "\n");
  57 }
  58
  59 /* Bootloader command parse system */
  60 void oscmd (char *cmdline)
  61 {
  62         kernel_attr = 0;
  63
  64         char cmd[80];
  65
  66         int x = 0, y, l;
  67
  68         l = strlen (cmdline);
  69
  70         if (l >= 80)
  71                 l = 79;
  72
  73         while (x < l) {
  74                 if (cmdline[x] == ' ') {
  75                         x ++;
  76
  77                         if (!cstrcmp ("nolive", cmdline+x))     /* Disable Live form of the OS */
  78                                 kernel_attr |= KERNEL_NOLIVE;
  79                         if (!cstrcmp ("noata", cmdline+x))      /* Ignore ATA devices - cdrom, hdd */
  80                                 kernel_attr |= KERNEL_NOATA;
  81                         if (!cstrcmp ("18hz", cmdline+x))       /* Ticks on 18hz only - IBM default tickrate */
  82                                 kernel_attr |= KERNEL_18HZ;
  83                         if (!cstrcmp ("noeth", cmdline+x))      /* Ignore ethernet cards */
  84                                 kernel_attr |= KERNEL_NOETH;
  85                         if (!cstrcmp ("novesa", cmdline+x))     /* Disable vesa support when its available */
  86                                 kernel_attr |= KERNEL_NOVESA;
  87                 }
  88
  89                 x ++;
  90         }
  91 }
  92
  93 /* Eye-candy status */
  94 unsigned int checkinfo (char *msg, int ret)
  95 {
  96         if (msg == NULL)
  97                 return 2;
  98
  99         video_color (14, 0);
 100         kprintf (" * ");
 101         video_color (7, 0);
 102         kprintf (msg);
 103         video_color (1, 0);
 104         kprintf ("\t\t[ ");
 105         video_color (14, 0);
 106
 107         if (ret) {
 108                 video_color (14, 0);
 109                 kprintf ("OK");
 110         } else {
 111                 video_color (4, 0);
 112                 kprintf ("Fail");
 113         }
 114
 115         video_color (1, 0);
 116         kprintf (" ]\n");
 117
 118         video_color (15, 0);
 119
 120         return ret;
 121 }
 122
 123 /* Handler-caller */
 124 unsigned int _init (init_handler_t *handler, char *msg)
 125 {
 126         return checkinfo (msg, handler ());
 127 }
 128
 129 extern void calc_freqency ();
 130 extern task_t *_curr_task;
 131
 132 /* initialization of kernel */
 133 int init (char *cmdline)
 134 {
 135         debug = 0;
 136         _curr_task = 0;
 137
 138         _init (&init_arch, NULL);                       /* architecture dependent stuff */
 139
 140         oscmd (cmdline);                                /* bootloader command parsing */
 141
 142         _init (&init_video, NULL);                      /* video initialization */
 143
 144         osinfo ();                                      /* print OS information - kernel ver.; compiler; .. */
 145
 146         _init (&init_mm, "Initialize mm");              /* Memory management */
 147         _init (&init_smp, "Initialize SMP");            /* Symmetric multiprocessing */
 148         _init (&init_keyboard, "Initialize keyboard");  /* Keyboard should be accessible from here */
 149 #ifdef ARCH_i386
 150         _init (&init_paging, "Initialize paging");      /* Page covering, etc */
 151 #endif
 152         _init (&init_errno, "Initialize errno");        /* Errno global variable */
 153         _init (&init_env, "Initialize env vars");       /* Environment variables */
 154         _init (&init_fd, "Initialize file desc");       /* File descriptors - stdin, stdout, .. */
 155         _init (&init_tasks, "Initialize tasks");        /* Thread and scheduler stuff */
 156         _init (&init_vfs, "Initialize VFS");            /* Virtual filesystem */
 157         _init (&init_fs, "Initialize fs");              /* Device filesystem */
 158         _init (&init_partition, "Initialize parts");    /* Device partitions - hda0, hda1, .. */
 159         _init (&init_its, "Initialize ITS");            /* Interval Time Scheduler */
 160         _init (&init_netif, "Initialize net if");       /* Network interface */
 161         _init (&init_dev, "Initialize devices");        /* Devices (PCI, RS232, Ethernet, ..) */
 162         _init (&init_socket, "Initialize sockets");     /* Network socket API */
 163         _init (&init_packet, "Initialize netcore");     /* Network handler - traffic parser */
 164         _init (&init_audio, "Initialize audio");        /* Sound System */
 165         _init (&init_proc, "Initialize procs");         /* Program's (software) process */
 166         _init (&init_module, "Loading modules");        /* Kernel additional modules (device drivers) */
 167         _init (&init_commands, "Registering cmds");     /* Built-in shell command registration */
 168         _init (&init_console, "Initialize console");    /* Console (terminal) stuff */
 169
 170         calc_swtimer ();                                /* Calculate by software time unit */
 171         calc_freqency ();                               /* Calculate CPU clock */
 172
 173         _init (&init_tty, NULL);                        /* Start TTY console */
 174         _init (&init_user, NULL);                       /* Register default user accounts */
 175
 176         return 1;
 177 }
 178