arch/.unmaintained/arm-all/dos/boot.c

   1 /*
   2     Copyright © 1995-2001, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc: Boot your operating system.
   6     Lang: english
   7 */
   8
   9 #include <exec/types.h>
  10 #include <exec/alerts.h>
  11 #include <exec/libraries.h>
  12 #include <exec/devices.h>
  13 #include <exec/execbase.h>
  14 #include <aros/libcall.h>
  15 #include <aros/asmcall.h>
  16 #include <dos/dosextens.h>
  17 #include <utility/tagitem.h>
  18 #include <aros/arossupportbase.h>
  19 #include <aros/debug.h>
  20
  21 #include <proto/exec.h>
  22 #include <proto/dos.h>
  23
  24 /* Require this for the stdout defn */
  25 #include <stdio.h>
  26
  27 extern void AROSSupportBase_SetStdOut (void *);
  28 extern int submain(struct ExecBase *, struct DosLibrary *);
  29
  30 struct emulbase
  31 {
  32     struct Device eb_device;
  33     struct Unit *eb_stdin;
  34     struct Unit *eb_stdout;
  35     struct Unit *eb_stderr;
  36 };
  37
  38 AROS_UFH3(void, boot,
  39     AROS_UFHA(STRPTR, argString, A0),
  40     AROS_UFHA(ULONG, argSize, D0),
  41     AROS_UFHA(struct ExecBase *, SysBase, A6)
  42 )
  43 {
  44     /*  We have been created as a process by DOS, we should now
  45         try and boot the system. We do this by calling the submain()
  46         function in arosshell.c
  47
  48         DOS has created our process, but it has not given us
  49         the correct I/O Streams yet. What we have to do is
  50         to (conditionally) close the old streams, and set
  51         our own, which we get from emul.handler.
  52
  53         This is really only necessary if
  54         a) We want to use the XTerm as our boot shell
  55         b) Don't have a working console.device/CON: handler.
  56     */
  57
  58     struct DosLibrary *DOSBase;
  59 //    struct emulbase *emulbase;
  60 //    struct TagItem fhtags[]= { { TAG_END, 0 } };
  61 //    struct FileHandle *fh_stdin, *fh_stdout;
  62
  63     DOSBase = (struct DosLibrary *)OpenLibrary("dos.library", 0);
  64     if( DOSBase == NULL )
  65     {
  66         /* BootStrap couldn't open dos.library */
  67         Alert(AT_DeadEnd | AN_BootStrap | AG_OpenLib | AO_DOSLib );
  68     }
  69
  70     /*
  71         This is quite naughty, but I know what I'm doing here, since
  72         emul.handler ALWAYS exists under Unix, and it won't go away.
  73     */
  74
  75 /*
  76     Forbid();
  77     emulbase = (struct emulbase *)FindName(&SysBase->DeviceList, "emul.handler");
  78     Permit();
  79
  80     if( emulbase == NULL )
  81     {
  82 */
  83         /* BootStrap couldn't open unknown */
  84 /*
  85         Alert(AT_DeadEnd | AN_BootStrap | AG_OpenDev | AO_Unknown );
  86     }
  87
  88     fh_stdin = AllocDosObject(DOS_FILEHANDLE, fhtags);
  89     fh_stdout = AllocDosObject(DOS_FILEHANDLE, fhtags);
  90
  91     if(fh_stdin == NULL || fh_stdout == NULL)
  92     {
  93 */
  94         /* We have got some problems here. */
  95 /*      Alert(AT_DeadEnd | AN_BootStrap | AG_NoMemory);
  96     }
  97
  98     fh_stdin->fh_Device  =&emulbase->eb_device;
  99     fh_stdin->fh_Unit    =emulbase->eb_stdin;
 100     fh_stdout->fh_Device =&emulbase->eb_device;
 101     fh_stdout->fh_Unit   =emulbase->eb_stdout;
 102
 103     if(Input())
 104         Close(Input());
 105     if(Output())
 106         Close(Output());
 107
 108     SelectInput(MKBADDR(fh_stdin));
 109     SelectOutput(MKBADDR(fh_stdout));
 110     ((struct Process *)FindTask(NULL))->pr_CES = MKBADDR(fh_stdout);
 111
 112     AROSSupportBase_SetStdOut (stderr);
 113 */
 114     submain(SysBase, DOSBase);
 115
 116     /* submain() returns, when the Boot Shell Window is left with EndShell/EndCli */
 117
 118     /* To avoid that the input/output/error handles of emul.handler
 119        are closed when the Boot Process dies, we set the in/out/err
 120        handles of this process to 0.
 121     */
 122
 123 /*
 124     SelectInput(0);
 125     SelectOutput(0);
 126     ((struct Process *)FindTask(NULL))->pr_CES = 0;
 127 */
 128
 129     /* No RemTask() here, otherwise the process cleanup routines
 130        are not called. And that would for example mean, that the
 131        Boot Process (having a CLI) is not removed from the rootnode.
 132        --> Dead stuff in there -> Crash
 133     */
 134 }