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