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 #include <kern/sched_prim.h>
  35
  36 /* extern references */
  37 void pe_identify_machine(void);
  38
  39 /* private globals */
  40 PE_state_t PE_state;
  41
  42 /* Clock Frequency Info */
  43 clock_frequency_info_t gPEClockFrequencyInfo;
  44
  45 static int PE_stub_read_write_time_of_day(unsigned int options, long * secs)
  46 {
  47     // believe it or, BSD crashes if invalid time returned. FIXME.
  48     if( options == kPEReadTOD)
  49         *secs = 0xb2383c72;
  50
  51     return 0;
  52 }
  53
  54 static int PE_stub_poll_input(unsigned int options, char * c)
  55 {
  56     *c = 0xff;
  57
  58     return 1;
  59 }
  60
  61 static int PE_stub_write_IIC(unsigned char addr, unsigned char reg,
  62                                 unsigned char data)
  63 {
  64     return 1;
  65 }
  66
  67 int (*PE_read_write_time_of_day)(unsigned int options, long * secs)
  68         = PE_stub_read_write_time_of_day;
  69 int (*PE_poll_input)(unsigned int options, char * c)
  70         = PE_stub_poll_input;
  71
  72 int (*PE_write_IIC)(unsigned char addr, unsigned char reg,
  73                                 unsigned char data)
  74         = PE_stub_write_IIC;
  75
  76
  77 int PE_initialize_console( PE_Video * info, int op )
  78 {
  79     static int          last_console = -1;
  80     Boot_Video          bootInfo;
  81     Boot_Video  *       bInfo;
  82
  83     if( info) {
  84         bootInfo.v_baseAddr             = info->v_baseAddr;
  85         bootInfo.v_rowBytes             = info->v_rowBytes;
  86         bootInfo.v_width                = info->v_width;
  87         bootInfo.v_height               = info->v_height;
  88         bootInfo.v_depth                = info->v_depth;
  89         bootInfo.v_display              = 0;
  90         bInfo = &bootInfo;
  91     } else
  92         bInfo = 0;
  93
  94     switch( op ) {
  95
  96         case kPEDisableScreen:
  97             initialize_screen((void *) bInfo, op);
  98             last_console = switch_to_serial_console();
  99             kprintf("kPEDisableScreen %d\n",last_console);
 100             break;
 101
 102         case kPEEnableScreen:
 103             initialize_screen((void *) bInfo, op);
 104             kprintf("kPEEnableScreen %d\n",last_console);
 105             if( last_console != -1)
 106                 switch_to_old_console( last_console);
 107             break;
 108
 109         default:
 110             initialize_screen((void *) bInfo, op);
 111             break;
 112     }
 113
 114     return 0;
 115 }
 116
 117 void PE_init_iokit(void)
 118 {
 119     kern_return_t       ret;
 120     DTEntry             entry;
 121     int                 size;
 122     int                 i;
 123     void **             map;
 124
 125     PE_init_kprintf(TRUE);
 126     PE_init_printf(TRUE);
 127
 128     // init this now to get mace debugger for iokit startup
 129     PE_init_ethernet_debugger();
 130
 131
 132     if( kSuccess == DTLookupEntry(0, "/chosen/memory-map", &entry)) {
 133
 134         boot_progress_element * bootPict;
 135
 136         if( kSuccess == DTGetProperty(entry, "BootCLUT", (void **) &map, &size))
 137             bcopy( map[0], appleClut8, sizeof(appleClut8) );
 138
 139         if( kSuccess == DTGetProperty(entry, "Pict-FailedBoot", (void **) &map, &size)) {
 140
 141             bootPict = (boot_progress_element *) map[0];
 142             default_noroot.width  = bootPict->width;
 143             default_noroot.height = bootPict->height;
 144             default_noroot.dx     = 0;
 145             default_noroot.dy     = bootPict->yOffset;
 146             default_noroot_data   = &bootPict->data[0];
 147         }
 148     }
 149     vc_progress_initialize( &default_progress, default_progress_data, (unsigned char *) appleClut8 );
 150
 151     PE_initialize_console( (PE_Video *) 0, kPEAcquireScreen );
 152
 153     ret = StartIOKit( PE_state.deviceTreeHead, PE_state.bootArgs,
 154                         (void *)0, (void *)0);
 155 }
 156
 157 void PE_init_platform(boolean_t vm_initialized, void *_args)
 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 void PE_create_console( void )
 194 {
 195   if (PE_state.video.v_display)
 196     PE_initialize_console( &PE_state.video, kPEGraphicsMode );
 197   else
 198     PE_initialize_console( &PE_state.video, kPETextMode );
 199 }
 200
 201 int PE_current_console( PE_Video * info )
 202 {
 203     *info = PE_state.video;
 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.bus_clock_rate_num * gPEClockFrequencyInfo.bus_to_dec_rate_num;
 249   den = gPEClockFrequencyInfo.bus_clock_rate_den * gPEClockFrequencyInfo.bus_to_dec_rate_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 }