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/boot_info.h>
  27 #include <mach/time_value.h>
  28 #include <pexpert/protos.h>
  29 #include <pexpert/pexpert.h>
  30 #include <pexpert/ppc/interrupts.h>
  31 #include <pexpert/device_tree.h>
  32 #include <pexpert/pe_images.h>
  33 #include <kern/debug.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 static boolean_t find_image( const char * name,
 117                                 void ** desc,
 118                                 unsigned char ** data,
 119                                 unsigned char ** clut )
 120 {
 121     boolean_t   ok;
 122 #if 0
 123     DTEntry     entry;
 124     int         size;
 125
 126     // This is a little flawed now the device tree data
 127     // is freed.
 128     if( (kSuccess == DTLookupEntry(0, "/AAPL,images", &entry))
 129      && (kSuccess == DTLookupEntry(entry, name, &entry)) ) {
 130
 131         ok = ( (kSuccess == DTGetProperty(entry, "desc",
 132                                 desc, &size))
 133             && (kSuccess == DTGetProperty(entry, "data",
 134                                 (void **)data, &size)));
 135
 136         if( clut && (kSuccess != DTGetProperty(entry, "clut",
 137                                 (void **)clut, &size)))
 138             *clut = appleClut8;
 139     } else
 140 #endif
 141         ok = FALSE;
 142
 143     return( ok );
 144 }
 145
 146 void PE_init_iokit(void)
 147 {
 148     kern_return_t       ret;
 149     void *              desc;
 150     unsigned char *     data;
 151     unsigned char *     clut;
 152
 153     PE_init_kprintf(TRUE);
 154     PE_init_printf(TRUE);
 155
 156     // init this now to get mace debugger for iokit startup
 157     PE_init_ethernet_debugger();
 158
 159     if( !find_image( "progress", &desc, &data, &clut)) {
 160         clut = appleClut8;
 161         desc = &default_progress;
 162         data = default_progress_data;
 163     }
 164     vc_progress_initialize( desc, data, clut );
 165
 166     PE_initialize_console( (PE_Video *) 0, kPEAcquireScreen );
 167
 168     ret = StartIOKit( PE_state.deviceTreeHead, PE_state.bootArgs,
 169                         (void *)0, (void *)0);
 170 }
 171
 172 void PE_init_platform(boolean_t vm_initialized, void *_args)
 173 {
 174         boot_args *args = (boot_args *)_args;
 175
 176         if (PE_state.initialized == FALSE)
 177         {
 178           PE_state.initialized          = TRUE;
 179           PE_state.bootArgs             = _args;
 180           PE_state.deviceTreeHead       = args->deviceTreeP;
 181           PE_state.video.v_baseAddr     = args->Video.v_baseAddr;
 182           PE_state.video.v_rowBytes     = args->Video.v_rowBytes;
 183           PE_state.video.v_width        = args->Video.v_width;
 184           PE_state.video.v_height       = args->Video.v_height;
 185           PE_state.video.v_depth        = args->Video.v_depth;
 186           PE_state.video.v_display      = args->Video.v_display;
 187           strcpy( PE_state.video.v_pixelFormat, "PPPPPPPP");
 188         }
 189
 190         if (!vm_initialized)
 191         {
 192             /*
 193              * Setup the OpenFirmware Device Tree routines
 194              * so the console can be found and the right I/O space
 195              * can be used..
 196              */
 197             DTInit(PE_state.deviceTreeHead);
 198
 199             /* Setup gPEClockFrequencyInfo */
 200             pe_identify_machine();
 201         }
 202         else
 203         {
 204             pe_init_debug();
 205         }
 206 }
 207
 208 void PE_create_console( void )
 209 {
 210   if (PE_state.video.v_display)
 211     PE_initialize_console( &PE_state.video, kPEGraphicsMode );
 212   else
 213     PE_initialize_console( &PE_state.video, kPETextMode );
 214 }
 215
 216 int PE_current_console( PE_Video * info )
 217 {
 218     *info = PE_state.video;
 219     return( 0);
 220 }
 221
 222 void PE_display_icon(   unsigned int flags,
 223                         const char * name )
 224 {
 225     void *              desc;
 226     unsigned char *     data;
 227
 228     if( !find_image( name, &desc, &data, 0)) {
 229         desc = &default_roroot;
 230         data = default_noroot_data;
 231     }
 232     vc_display_icon( desc, data );
 233 }
 234
 235 extern boolean_t PE_get_hotkey(
 236         unsigned char   key)
 237 {
 238     unsigned char * adbKeymap;
 239     int         size;
 240     DTEntry     entry;
 241
 242     if( (kSuccess != DTLookupEntry( 0, "/", &entry))
 243     ||  (kSuccess != DTGetProperty( entry, "AAPL,adb-keymap",
 244             (void **)&adbKeymap, &size))
 245     || (size != 16))
 246
 247         return( FALSE);
 248
 249     if( key > 127)
 250         return( FALSE);
 251
 252     return( adbKeymap[ key / 8 ] & (0x80 >> (key & 7)));
 253 }
 254
 255 static timebase_callback_func gTimebaseCallback;
 256
 257 void PE_register_timebase_callback(timebase_callback_func callback)
 258 {
 259   gTimebaseCallback = callback;
 260
 261   PE_call_timebase_callback();
 262 }
 263
 264 void PE_call_timebase_callback(void)
 265 {
 266   struct timebase_freq_t timebase_freq;
 267   unsigned long          num, den, cnt;
 268
 269   num = gPEClockFrequencyInfo.bus_clock_rate_num * gPEClockFrequencyInfo.bus_to_dec_rate_num;
 270   den = gPEClockFrequencyInfo.bus_clock_rate_den * gPEClockFrequencyInfo.bus_to_dec_rate_den;
 271
 272   cnt = 2;
 273   while (cnt <= den) {
 274     if ((num % cnt) || (den % cnt)) {
 275       cnt++;
 276       continue;
 277     }
 278
 279     num /= cnt;
 280     den /= cnt;
 281   }
 282
 283   timebase_freq.timebase_num = num;
 284   timebase_freq.timebase_den = den;
 285
 286   if (gTimebaseCallback) gTimebaseCallback(&timebase_freq);
 287 }