pexpert/ppc/pe_init.c

   1 /*
   2  * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * file: pe_init.c
  24  *    PPC platform expert initialization.
  25  */
  26 #include <mach/time_value.h>
  27 #include <pexpert/protos.h>
  28 #include <pexpert/pexpert.h>
  29 #include <pexpert/ppc/interrupts.h>
  30 #include <pexpert/device_tree.h>
  31 #include <pexpert/pe_images.h>
  32 #include <kern/debug.h>
  33 #include <kern/sched_prim.h>
  34 #include <vm/pmap.h>
  35
  36
  37 /* extern references */
  38 void pe_identify_machine(void);
  39
  40 /* private globals */
  41 PE_state_t PE_state;
  42
  43 /* Clock Frequency Info */
  44 clock_frequency_info_t gPEClockFrequencyInfo;
  45
  46 static int PE_stub_read_write_time_of_day(unsigned int options, long * secs)
  47 {
  48     // believe it or, BSD crashes if invalid time returned. FIXME.
  49     if( options == kPEReadTOD)
  50         *secs = 0xb2383c72;
  51
  52     return 0;
  53 }
  54
  55 static int PE_stub_poll_input(unsigned int options, char * c)
  56 {
  57     *c = 0xff;
  58
  59     return 1;
  60 }
  61
  62 static int PE_stub_write_IIC(unsigned char addr, unsigned char reg,
  63                                 unsigned char data)
  64 {
  65     return 1;
  66 }
  67
  68 int (*PE_read_write_time_of_day)(unsigned int options, long * secs)
  69         = PE_stub_read_write_time_of_day;
  70 int (*PE_poll_input)(unsigned int options, char * c)
  71         = PE_stub_poll_input;
  72
  73 int (*PE_write_IIC)(unsigned char addr, unsigned char reg,
  74                                 unsigned char data)
  75         = PE_stub_write_IIC;
  76
  77
  78 int PE_initialize_console( PE_Video * info, int op )
  79 {
  80     static int          last_console = -1;
  81     Boot_Video          bootInfo;
  82     Boot_Video  *       bInfo;
  83
  84     if( info) {
  85         bootInfo.v_baseAddr             = info->v_baseAddr;
  86         bootInfo.v_rowBytes             = info->v_rowBytes;
  87         bootInfo.v_width                = info->v_width;
  88         bootInfo.v_height               = info->v_height;
  89         bootInfo.v_depth                = info->v_depth;
  90         bootInfo.v_display              = 0;
  91         bInfo = &bootInfo;
  92     } else
  93         bInfo = 0;
  94
  95     switch( op ) {
  96
  97         case kPEDisableScreen:
  98             initialize_screen((void *) bInfo, op);
  99             last_console = switch_to_serial_console();
 100             kprintf("kPEDisableScreen %d\n",last_console);
 101             break;
 102
 103         case kPEEnableScreen:
 104             initialize_screen((void *) bInfo, op);
 105             kprintf("kPEEnableScreen %d\n",last_console);
 106             if( last_console != -1)
 107                 switch_to_old_console( last_console);
 108             break;
 109
 110         default:
 111             initialize_screen((void *) bInfo, op);
 112             break;
 113     }
 114
 115     return 0;
 116 }
 117
 118 void PE_init_iokit(void)
 119 {
 120     kern_return_t       ret;
 121     DTEntry             entry;
 122     int                 size;
 123     void **             map;
 124
 125     PE_init_kprintf(TRUE);
 126     PE_init_printf(TRUE);
 127
 128     if( kSuccess == DTLookupEntry(0, "/chosen/memory-map", &entry)) {
 129
 130         boot_progress_element * bootPict;
 131
 132         if( kSuccess == DTGetProperty(entry, "BootCLUT", (void **) &map, &size))
 133             bcopy( map[0], appleClut8, sizeof(appleClut8) );
 134
 135         if( kSuccess == DTGetProperty(entry, "Pict-FailedBoot", (void **) &map, &size)) {
 136
 137             bootPict = (boot_progress_element *) map[0];
 138             default_noroot.width  = bootPict->width;
 139             default_noroot.height = bootPict->height;
 140             default_noroot.dx     = 0;
 141             default_noroot.dy     = bootPict->yOffset;
 142             default_noroot_data   = &bootPict->data[0];
 143         }
 144     }
 145     panic_ui_initialize( (unsigned char *) appleClut8 );
 146     vc_progress_initialize( &default_progress, default_progress_data, (unsigned char *) appleClut8 );
 147
 148     ret = StartIOKit( PE_state.deviceTreeHead, PE_state.bootArgs, (void *)0, (void *)0);
 149 }
 150
 151 void PE_init_platform(boolean_t vm_initialized, void *_args)
 152 {
 153         DTEntry dsouth, dnorth, root, dcpu;
 154         char *model;
 155         int msize, size;
 156         uint32_t *south, *north, *pdata, *ddata;
 157         int i;
 158
 159         boot_args *args = (boot_args *)_args;
 160
 161         if (PE_state.initialized == FALSE)
 162         {
 163           PE_state.initialized          = TRUE;
 164           PE_state.bootArgs             = _args;
 165           PE_state.deviceTreeHead       = args->deviceTreeP;
 166           PE_state.video.v_baseAddr     = args->Video.v_baseAddr;
 167           PE_state.video.v_rowBytes     = args->Video.v_rowBytes;
 168           PE_state.video.v_width        = args->Video.v_width;
 169           PE_state.video.v_height       = args->Video.v_height;
 170           PE_state.video.v_depth        = args->Video.v_depth;
 171           PE_state.video.v_display      = args->Video.v_display;
 172           strcpy( PE_state.video.v_pixelFormat, "PPPPPPPP");
 173         }
 174
 175         if (!vm_initialized)
 176         {
 177             /*
 178              * Setup the OpenFirmware Device Tree routines
 179              * so the console can be found and the right I/O space
 180              * can be used..
 181              */
 182             DTInit(PE_state.deviceTreeHead);
 183
 184             /* Setup gPEClockFrequencyInfo */
 185             pe_identify_machine();
 186         }
 187         else
 188         {
 189             pe_init_debug();
 190
 191         }
 192 }
 193
 194 void PE_create_console( void )
 195 {
 196     if ( PE_state.video.v_display )
 197         PE_initialize_console( &PE_state.video, kPEGraphicsMode );
 198     else
 199         PE_initialize_console( &PE_state.video, kPETextMode );
 200 }
 201
 202 int PE_current_console( PE_Video * info )
 203 {
 204     *info = PE_state.video;
 205     info->v_baseAddr = 0;
 206     return( 0);
 207 }
 208
 209 void PE_display_icon(   unsigned int flags,
 210                         const char * name )
 211 {
 212     if( default_noroot_data)
 213         vc_display_icon( &default_noroot, default_noroot_data );
 214 }
 215
 216 extern boolean_t PE_get_hotkey(
 217         unsigned char   key)
 218 {
 219     unsigned char * adbKeymap;
 220     int         size;
 221     DTEntry     entry;
 222
 223     if( (kSuccess != DTLookupEntry( 0, "/", &entry))
 224     ||  (kSuccess != DTGetProperty( entry, "AAPL,adb-keymap",
 225             (void **)&adbKeymap, &size))
 226     || (size != 16))
 227
 228         return( FALSE);
 229
 230     if( key > 127)
 231         return( FALSE);
 232
 233     return( adbKeymap[ key / 8 ] & (0x80 >> (key & 7)));
 234 }
 235
 236 static timebase_callback_func gTimebaseCallback;
 237
 238 void PE_register_timebase_callback(timebase_callback_func callback)
 239 {
 240   gTimebaseCallback = callback;
 241
 242   PE_call_timebase_callback();
 243 }
 244
 245 void PE_call_timebase_callback(void)
 246 {
 247   struct timebase_freq_t timebase_freq;
 248   unsigned long          num, den, cnt;
 249
 250   num = gPEClockFrequencyInfo.timebase_frequency_num;
 251   den = gPEClockFrequencyInfo.timebase_frequency_den;
 252
 253   cnt = 2;
 254   while (cnt <= den) {
 255     if ((num % cnt) || (den % cnt)) {
 256       cnt++;
 257       continue;
 258     }
 259
 260     num /= cnt;
 261     den /= cnt;
 262   }
 263
 264   timebase_freq.timebase_num = num;
 265   timebase_freq.timebase_den = den;
 266
 267   if (gTimebaseCallback) gTimebaseCallback(&timebase_freq);
 268 }