rom/dosboot/boot.c

   1 /*
   2     Copyright � 1995-2010, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc: Boot your operating system.
   6     Lang: english
   7 */
   8
   9 #define DEBUG 0
  10 #include <aros/debug.h>
  11
  12 #include <aros/bootloader.h>
  13 #include <exec/types.h>
  14 #include <exec/alerts.h>
  15 #include <exec/libraries.h>
  16 #include <exec/devices.h>
  17 #include <exec/execbase.h>
  18 #include <aros/libcall.h>
  19 #include <aros/asmcall.h>
  20 #include <dos/dosextens.h>
  21 #include <dos/filesystem.h>
  22 #include <utility/tagitem.h>
  23
  24 #include <proto/bootloader.h>
  25 #include <proto/exec.h>
  26 #include <proto/dos.h>
  27
  28 #include "dosboot_intern.h"
  29
  30 void __dosboot_Boot(APTR BootLoaderBase, struct DosLibrary *DOSBase, ULONG Flags)
  31 {
  32     LONG rc = RETURN_FAIL;
  33     BPTR cis = NULL;
  34
  35     /*  We have been created as a process by DOS, we should now
  36         try and boot the system. */
  37
  38
  39     D(bug("[DOSBoot] __dosboot_Boot()\n"));
  40
  41     cis = Open("CON:20/20///Boot Shell/AUTO", FMF_READ);
  42     if (cis)
  43     {
  44         BPTR sseq = NULL;
  45
  46         struct TagItem tags[] =
  47             {
  48                 { SYS_Asynch,      TRUE       }, /* 0 */
  49                 { SYS_Background,  FALSE      }, /* 1 */
  50                 { SYS_Input,       (IPTR)cis  }, /* 2 */
  51                 { SYS_Output,      (IPTR)NULL }, /* 3 */
  52                 { SYS_Error,       (IPTR)NULL }, /* 4 */
  53                 { SYS_ScriptInput, (IPTR)NULL }, /* 5 */
  54                 { TAG_DONE,       0           }
  55             };
  56
  57         D(bug("[DOSBoot] __dosboot_Boot: Open Startup Sequence = %d\n", opensseq));
  58
  59         if (!(Flags & BF_NO_STARTUP_SEQUENCE))
  60         {
  61             sseq = Open("S:Startup-Sequence", FMF_READ);
  62             tags[5].ti_Data = (IPTR)sseq;
  63         }
  64         else
  65         {
  66             /* If poseidon is enabled, ensure that ENV: exists to avoid missing volume requester.
  67              * You could think we should check for this in bootmenu.resource because there we
  68              * select to boot without startup sequence but there might be other places to do this
  69              * selection in the future.
  70              */
  71
  72             if (BootLoaderBase)
  73             {
  74                 /* TODO: create something like ExistsBootArg("enableusb") in bootloader.resource */
  75                 struct List *list = GetBootInfo(BL_Args);
  76                 BOOL enable = FALSE;
  77                 if (list)
  78                 {
  79                     struct Node *node;
  80                     ForeachNode(list, node)
  81                     {
  82                         if (stricmp(node->ln_Name, "enableusb") == 0)
  83                         {
  84                             enable = TRUE;
  85                         }
  86                     }
  87                 }
  88
  89                 if (enable)
  90                 {
  91                     BPTR lock = CreateDir("RAM:ENV");
  92                     if (lock)
  93                         AssignLock("ENV", lock);
  94                 }
  95             }
  96
  97             tags[5].ti_Tag = TAG_IGNORE;
  98         }
  99
 100         rc = SystemTagList("", tags);
 101         if (rc != -1)
 102         {
 103             cis  = NULL;
 104             sseq = NULL;
 105         }
 106         else
 107             rc = RETURN_FAIL;
 108         if (sseq != NULL)
 109             Close(sseq);
 110     } else
 111         kprintf("Cannot open boot console\n");
 112
 113     /* We get here when the Boot Shell Window is left with EndShell/EndCli.
 114        There's no RemTask() here, otherwise the process cleanup routines
 115        are not called. And that would for example mean, that the
 116        Boot Process (having a CLI) is not removed from the rootnode.
 117        --> Dead stuff in there -> Crash
 118     */
 119 }