pexpert/ppc/pe_init.c

   1 /*
   2  * Copyright (c) 2000 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
  35 /* extern references */
  36 void pe_identify_machine(void);
  37
  38 /* private globals */
  39 PE_state_t PE_state;
  40
  41 /* Clock Frequency Info */
  42 clock_frequency_info_t gPEClockFrequencyInfo;
  43
  44 static int PE_stub_read_write_time_of_day(unsigned int options, long * secs)
  45 {
  46     // believe it or, BSD crashes if invalid time returned. FIXME.
  47     if( options == kPEReadTOD)
  48         *secs = 0xb2383c72;
  49
  50     return 0;
  51 }
  52
  53 static int PE_stub_poll_input(unsigned int options, char * c)
  54 {
  55     *c = 0xff;
  56
  57     return 1;
  58 }
  59
  60 static int PE_stub_write_IIC(unsigned char addr, unsigned char reg,
  61                                 unsigned char data)
  62 {
  63     return 1;
  64 }
  65
  66 int (*PE_read_write_time_of_day)(unsigned int options, long * secs)
  67         = PE_stub_read_write_time_of_day;
  68 int (*PE_poll_input)(unsigned int options, char * c)
  69         = PE_stub_poll_input;
  70
  71 int (*PE_write_IIC)(unsigned char addr, unsigned char reg,
  72                                 unsigned char data)
  73         = PE_stub_write_IIC;
  74
  75
  76 int PE_initialize_console( PE_Video * info, int op )
  77 {
  78     static int          last_console = -1;
  79     Boot_Video          bootInfo;
  80     Boot_Video  *       bInfo;
  81
  82     if( info) {
  83         bootInfo.v_baseAddr             = info->v_baseAddr;
  84         bootInfo.v_rowBytes             = info->v_rowBytes;
  85         bootInfo.v_width                = info->v_width;
  86         bootInfo.v_height               = info->v_height;
  87         bootInfo.v_depth                = info->v_depth;
  88         bootInfo.v_display              = 0;
  89         bInfo = &bootInfo;
  90     } else
  91         bInfo = 0;
  92
  93     switch( op ) {
  94
  95         case kPEDisableScreen:
  96             initialize_screen((void *) bInfo, op);
  97             last_console = switch_to_serial_console();
  98             kprintf("kPEDisableScreen %d\n",last_console);
  99             break;
 100
 101         case kPEEnableScreen:
 102             initialize_screen((void *) bInfo, op);
 103             kprintf("kPEEnableScreen %d\n",last_console);
 104             if( last_console != -1)
 105                 switch_to_old_console( last_console);
 106             break;
 107
 108         default:
 109             initialize_screen((void *) bInfo, op);
 110             break;
 111     }
 112
 113     return 0;
 114 }
 115
 116 void PE_init_iokit(void)
 117 {
 118     kern_return_t       ret;
 119     DTEntry             entry;
 120     int                 size;
 121     void **             map;
 122
 123     PE_init_kprintf(TRUE);
 124     PE_init_printf(TRUE);
 125
 126     if( kSuccess == DTLookupEntry(0, "/chosen/memory-map", &entry)) {
 127
 128         boot_progress_element * bootPict;
 129
 130         if( kSuccess == DTGetProperty(entry, "BootCLUT", (void **) &map, &size))
 131             bcopy( map[0], appleClut8, sizeof(appleClut8) );
 132
 133         if( kSuccess == DTGetProperty(entry, "Pict-FailedBoot", (void **) &map, &size)) {
 134
 135             bootPict = (boot_progress_element *) map[0];
 136             default_noroot.width  = bootPict->width;
 137             default_noroot.height = bootPict->height;
 138             default_noroot.dx     = 0;
 139             default_noroot.dy     = bootPict->yOffset;
 140             default_noroot_data   = &bootPict->data[0];
 141         }
 142     }
 143     panic_ui_initialize( (unsigned char *) appleClut8 );
 144     vc_progress_initialize( &default_progress, default_progress_data, (unsigned char *) appleClut8 );
 145
 146     ret = StartIOKit( PE_state.deviceTreeHead, PE_state.bootArgs, (void *)0, (void *)0);
 147 }
 148
 149 void PE_init_platform(boolean_t vm_initialized, void *_args)
 150 {
 151         boot_args *args = (boot_args *)_args;
 152
 153         if (PE_state.initialized == FALSE)
 154         {
 155           PE_state.initialized          = TRUE;
 156           PE_state.bootArgs             = _args;
 157           PE_state.deviceTreeHead       = args->deviceTreeP;
 158           PE_state.video.v_baseAddr     = args->Video.v_baseAddr;
 159           PE_state.video.v_rowBytes     = args->Video.v_rowBytes;
 160           PE_state.video.v_width        = args->Video.v_width;
 161           PE_state.video.v_height       = args->Video.v_height;
 162           PE_state.video.v_depth        = args->Video.v_depth;
 163           PE_state.video.v_display      = args->Video.v_display;
 164           strcpy( PE_state.video.v_pixelFormat, "PPPPPPPP");
 165         }
 166
 167         if (!vm_initialized)
 168         {
 169             /*
 170              * Setup the OpenFirmware Device Tree routines
 171              * so the console can be found and the right I/O space
 172              * can be used..
 173              */
 174             DTInit(PE_state.deviceTreeHead);
 175
 176             /* Setup gPEClockFrequencyInfo */
 177             pe_identify_machine();
 178         }
 179         else
 180         {
 181             pe_init_debug();
 182         }
 183 }
 184
 185 void PE_create_console( void )
 186 {
 187     if ( PE_state.video.v_display )
 188         PE_initialize_console( &PE_state.video, kPEGraphicsMode );
 189     else
 190         PE_initialize_console( &PE_state.video, kPETextMode );
 191 }
 192
 193 int PE_current_console( PE_Video * info )
 194 {
 195     *info = PE_state.video;
 196     info->v_baseAddr = 0;
 197     return( 0);
 198 }
 199
 200 void PE_display_icon(   unsigned int flags,
 201                         const char * name )
 202 {
 203     if( default_noroot_data)
 204         vc_display_icon( &default_noroot, default_noroot_data );
 205 }
 206
 207 extern boolean_t PE_get_hotkey(
 208         unsigned char   key)
 209 {
 210     unsigned char * adbKeymap;
 211     int         size;
 212     DTEntry     entry;
 213
 214     if( (kSuccess != DTLookupEntry( 0, "/", &entry))
 215     ||  (kSuccess != DTGetProperty( entry, "AAPL,adb-keymap",
 216             (void **)&adbKeymap, &size))
 217     || (size != 16))
 218
 219         return( FALSE);
 220
 221     if( key > 127)
 222         return( FALSE);
 223
 224     return( adbKeymap[ key / 8 ] & (0x80 >> (key & 7)));
 225 }
 226
 227 static timebase_callback_func gTimebaseCallback;
 228
 229 void PE_register_timebase_callback(timebase_callback_func callback)
 230 {
 231   gTimebaseCallback = callback;
 232
 233   PE_call_timebase_callback();
 234 }
 235
 236 void PE_call_timebase_callback(void)
 237 {
 238   struct timebase_freq_t timebase_freq;
 239   unsigned long          num, den, cnt;
 240
 241   num = gPEClockFrequencyInfo.timebase_frequency_num;
 242   den = gPEClockFrequencyInfo.timebase_frequency_den;
 243
 244   cnt = 2;
 245   while (cnt <= den) {
 246     if ((num % cnt) || (den % cnt)) {
 247       cnt++;
 248       continue;
 249     }
 250
 251     num /= cnt;
 252     den /= cnt;
 253   }
 254
 255   timebase_freq.timebase_num = num;
 256   timebase_freq.timebase_den = den;
 257
 258   if (gTimebaseCallback) gTimebaseCallback(&timebase_freq);
 259 }