pexpert/ppc/pe_init.c

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26  * file: pe_init.c
  27  *    PPC platform expert initialization.
  28  */
  29 #include <mach/boot_info.h>
  30 #include <mach/time_value.h>
  31 #include <pexpert/protos.h>
  32 #include <pexpert/pexpert.h>
  33 #include <pexpert/ppc/interrupts.h>
  34 #include <pexpert/device_tree.h>
  35 #include <pexpert/pe_images.h>
  36 #include <kern/debug.h>
  37 #include <kern/sched_prim.h>
  38
  39 /* extern references */
  40 void pe_identify_machine(void);
  41
  42 /* private globals */
  43 PE_state_t PE_state;
  44
  45 /* Clock Frequency Info */
  46 clock_frequency_info_t gPEClockFrequencyInfo;
  47
  48 static int PE_stub_read_write_time_of_day(unsigned int options, long * secs)
  49 {
  50     // believe it or, BSD crashes if invalid time returned. FIXME.
  51     if( options == kPEReadTOD)
  52         *secs = 0xb2383c72;
  53
  54     return 0;
  55 }
  56
  57 static int PE_stub_poll_input(unsigned int options, char * c)
  58 {
  59     *c = 0xff;
  60
  61     return 1;
  62 }
  63
  64 static int PE_stub_write_IIC(unsigned char addr, unsigned char reg,
  65                                 unsigned char data)
  66 {
  67     return 1;
  68 }
  69
  70 int (*PE_read_write_time_of_day)(unsigned int options, long * secs)
  71         = PE_stub_read_write_time_of_day;
  72 int (*PE_poll_input)(unsigned int options, char * c)
  73         = PE_stub_poll_input;
  74
  75 int (*PE_write_IIC)(unsigned char addr, unsigned char reg,
  76                                 unsigned char data)
  77         = PE_stub_write_IIC;
  78
  79
  80 int PE_initialize_console( PE_Video * info, int op )
  81 {
  82     static int          last_console = -1;
  83     Boot_Video          bootInfo;
  84     Boot_Video  *       bInfo;
  85
  86     if( info) {
  87         bootInfo.v_baseAddr             = info->v_baseAddr;
  88         bootInfo.v_rowBytes             = info->v_rowBytes;
  89         bootInfo.v_width                = info->v_width;
  90         bootInfo.v_height               = info->v_height;
  91         bootInfo.v_depth                = info->v_depth;
  92         bootInfo.v_display              = 0;
  93         bInfo = &bootInfo;
  94     } else
  95         bInfo = 0;
  96
  97     switch( op ) {
  98
  99         case kPEDisableScreen:
 100             initialize_screen((void *) bInfo, op);
 101             last_console = switch_to_serial_console();
 102             kprintf("kPEDisableScreen %d\n",last_console);
 103             break;
 104
 105         case kPEEnableScreen:
 106             initialize_screen((void *) bInfo, op);
 107             kprintf("kPEEnableScreen %d\n",last_console);
 108             if( last_console != -1)
 109                 switch_to_old_console( last_console);
 110             break;
 111
 112         default:
 113             initialize_screen((void *) bInfo, op);
 114             break;
 115     }
 116
 117     return 0;
 118 }
 119
 120 void PE_init_iokit(void)
 121 {
 122     kern_return_t       ret;
 123     DTEntry             entry;
 124     int                 size;
 125     int                 i;
 126     void **             map;
 127
 128     PE_init_kprintf(TRUE);
 129     PE_init_printf(TRUE);
 130
 131     if( kSuccess == DTLookupEntry(0, "/chosen/memory-map", &entry)) {
 132
 133         boot_progress_element * bootPict;
 134
 135         if( kSuccess == DTGetProperty(entry, "BootCLUT", (void **) &map, &size))
 136             bcopy( map[0], appleClut8, sizeof(appleClut8) );
 137
 138         if( kSuccess == DTGetProperty(entry, "Pict-FailedBoot", (void **) &map, &size)) {
 139
 140             bootPict = (boot_progress_element *) map[0];
 141             default_noroot.width  = bootPict->width;
 142             default_noroot.height = bootPict->height;
 143             default_noroot.dx     = 0;
 144             default_noroot.dy     = bootPict->yOffset;
 145             default_noroot_data   = &bootPict->data[0];
 146         }
 147     }
 148     vc_progress_initialize( &default_progress, default_progress_data, (unsigned char *) appleClut8 );
 149
 150     PE_initialize_console( (PE_Video *) 0, kPEAcquireScreen );
 151
 152     ret = StartIOKit( PE_state.deviceTreeHead, PE_state.bootArgs,
 153                         (void *)0, (void *)0);
 154 }
 155
 156 void PE_init_platform(boolean_t vm_initialized, void *_args)
 157 {
 158         boot_args *args = (boot_args *)_args;
 159
 160         if (PE_state.initialized == FALSE)
 161         {
 162           PE_state.initialized          = TRUE;
 163           PE_state.bootArgs             = _args;
 164           PE_state.deviceTreeHead       = args->deviceTreeP;
 165           PE_state.video.v_baseAddr     = args->Video.v_baseAddr;
 166           PE_state.video.v_rowBytes     = args->Video.v_rowBytes;
 167           PE_state.video.v_width        = args->Video.v_width;
 168           PE_state.video.v_height       = args->Video.v_height;
 169           PE_state.video.v_depth        = args->Video.v_depth;
 170           PE_state.video.v_display      = args->Video.v_display;
 171           strcpy( PE_state.video.v_pixelFormat, "PPPPPPPP");
 172         }
 173
 174         if (!vm_initialized)
 175         {
 176             /*
 177              * Setup the OpenFirmware Device Tree routines
 178              * so the console can be found and the right I/O space
 179              * can be used..
 180              */
 181             DTInit(PE_state.deviceTreeHead);
 182
 183             /* Setup gPEClockFrequencyInfo */
 184             pe_identify_machine();
 185         }
 186         else
 187         {
 188             pe_init_debug();
 189         }
 190 }
 191
 192 void PE_create_console( void )
 193 {
 194   if (PE_state.video.v_display)
 195     PE_initialize_console( &PE_state.video, kPEGraphicsMode );
 196   else
 197     PE_initialize_console( &PE_state.video, kPETextMode );
 198 }
 199
 200 int PE_current_console( PE_Video * info )
 201 {
 202     *info = PE_state.video;
 203     info->v_baseAddr = 0;
 204     return( 0);
 205 }
 206
 207 void PE_display_icon(   unsigned int flags,
 208                         const char * name )
 209 {
 210     if( default_noroot_data)
 211         vc_display_icon( &default_noroot, default_noroot_data );
 212 }
 213
 214 extern boolean_t PE_get_hotkey(
 215         unsigned char   key)
 216 {
 217     unsigned char * adbKeymap;
 218     int         size;
 219     DTEntry     entry;
 220
 221     if( (kSuccess != DTLookupEntry( 0, "/", &entry))
 222     ||  (kSuccess != DTGetProperty( entry, "AAPL,adb-keymap",
 223             (void **)&adbKeymap, &size))
 224     || (size != 16))
 225
 226         return( FALSE);
 227
 228     if( key > 127)
 229         return( FALSE);
 230
 231     return( adbKeymap[ key / 8 ] & (0x80 >> (key & 7)));
 232 }
 233
 234 static timebase_callback_func gTimebaseCallback;
 235
 236 void PE_register_timebase_callback(timebase_callback_func callback)
 237 {
 238   gTimebaseCallback = callback;
 239
 240   PE_call_timebase_callback();
 241 }
 242
 243 void PE_call_timebase_callback(void)
 244 {
 245   struct timebase_freq_t timebase_freq;
 246   unsigned long          num, den, cnt;
 247
 248   num = gPEClockFrequencyInfo.timebase_frequency_num;
 249   den = gPEClockFrequencyInfo.timebase_frequency_den;
 250
 251   cnt = 2;
 252   while (cnt <= den) {
 253     if ((num % cnt) || (den % cnt)) {
 254       cnt++;
 255       continue;
 256     }
 257
 258     num /= cnt;
 259     den /= cnt;
 260   }
 261
 262   timebase_freq.timebase_num = num;
 263   timebase_freq.timebase_den = den;
 264
 265   if (gTimebaseCallback) gTimebaseCallback(&timebase_freq);
 266 }