arch/ppc/pearpc/init.c

   1 /*
   2  *   Creation Date: <2004/08/28 18:38:22 greg>
   3  *   Time-stamp: <2004/08/28 18:38:22 greg>
   4  *
   5  *      <init.c>
   6  *
   7  *      Initialization for pearpc
   8  *
   9  *   Copyright (C) 2004 Greg Watson
  10  *   Copyright (C) 2005 Stefan Reinauer
  11  *
  12  *   based on mol/init.c:
  13  *
  14  *   Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004 Samuel & David Rydh
  15  *      (samuel@ibrium.se, dary@lindesign.se)
  16  *
  17  *   This program is free software; you can redistribute it and/or
  18  *   modify it under the terms of the GNU General Public License
  19  *   as published by the Free Software Foundation
  20  *
  21  */
  22
  23 #include "config.h"
  24 #include "libopenbios/openbios.h"
  25 #include "libopenbios/bindings.h"
  26 #include "arch/common/nvram.h"
  27 #include "pearpc/pearpc.h"
  28 #include "libopenbios/ofmem.h"
  29 #include "openbios-version.h"
  30
  31 extern void unexpected_excep( int vector );
  32 extern void ob_pci_init( void );
  33 extern void ob_adb_init( void );
  34 extern void setup_timers( void );
  35
  36 #if 0
  37 int
  38 get_bool_res( const char *res )
  39 {
  40         char buf[8], *p;
  41
  42         p = BootHGetStrRes( res, buf, sizeof(buf) );
  43         if( !p )
  44                 return -1;
  45         if( !strcasecmp(p,"true") || !strcasecmp(p,"yes") || !strcasecmp(p,"1") )
  46                 return 1;
  47         return 0;
  48 }
  49 #endif
  50
  51 void
  52 unexpected_excep( int vector )
  53 {
  54         printk("openbios panic: Unexpected exception %x\n", vector );
  55         for( ;; )
  56                 ;
  57 }
  58
  59 unsigned long isa_io_base;
  60
  61 void
  62 entry( void )
  63 {
  64         isa_io_base = 0x80000000;
  65
  66         printk("\n");
  67         printk("=============================================================\n");
  68         printk(PROGRAM_NAME " " OPENBIOS_VERSION_STR " [%s]\n",
  69                OPENBIOS_BUILD_DATE);
  70
  71         ofmem_init();
  72         initialize_forth();
  73         /* won't return */
  74
  75         printk("of_startup returned!\n");
  76         for( ;; )
  77                 ;
  78 }
  79
  80 static void
  81 setenv( char *env, char *value )
  82 {
  83         push_str( value );
  84         push_str( env );
  85         fword("$setenv");
  86 }
  87
  88 void
  89 arch_of_init( void )
  90 {
  91 #if CONFIG_RTAS
  92         phandle_t ph;
  93 #endif
  94         int autoboot;
  95
  96         devtree_init();
  97         nvram_init("/pci/mac-io/nvram");
  98         openbios_init();
  99         modules_init();
 100         setup_timers();
 101 #ifdef CONFIG_DRIVER_PCI
 102         ob_pci_init();
 103 #endif
 104         node_methods_init();
 105         init_video();
 106
 107 #if CONFIG_RTAS
 108         if( !(ph=find_dev("/rtas")) )
 109                 printk("Warning: No /rtas node\n");
 110         else {
 111                 unsigned long size = 0x1000;
 112                 while( size < (unsigned long)of_rtas_end - (unsigned long)of_rtas_start )
 113                         size *= 2;
 114                 set_property( ph, "rtas-size", (char*)&size, sizeof(size) );
 115         }
 116 #endif
 117
 118 #if 0
 119         /* tweak boot settings */
 120         autoboot = !!get_bool_res("autoboot");
 121 #endif
 122         autoboot = 0;
 123         if( !autoboot )
 124                 printk("Autobooting disabled - dropping into OpenFirmware\n");
 125         setenv("auto-boot?", autoboot ? "true" : "false" );
 126         setenv("boot-command", "pearpcboot");
 127
 128 #if 0
 129         if( get_bool_res("tty-interface") == 1 )
 130 #endif
 131                 fword("activate-tty-interface");
 132
 133         /* hack */
 134         device_end();
 135         bind_func("pearpcboot", boot );
 136 }