pexpert/ppc/pe_init.c

   1 /*
   2  * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 /*
  29  * file: pe_init.c
  30  *    PPC platform expert initialization.
  31  */
  32 #include <mach/time_value.h>
  33 #include <pexpert/protos.h>
  34 #include <pexpert/pexpert.h>
  35 #include <pexpert/ppc/interrupts.h>
  36 #include <pexpert/device_tree.h>
  37 #include <pexpert/pe_images.h>
  38 #include <kern/debug.h>
  39 #include <kern/sched_prim.h>
  40 #include <vm/pmap.h>
  41
  42
  43 /* extern references */
  44 void pe_identify_machine(void);
  45
  46 /* private globals */
  47 PE_state_t PE_state;
  48
  49 /* Clock Frequency Info */
  50 clock_frequency_info_t gPEClockFrequencyInfo;
  51
  52 static int PE_stub_read_write_time_of_day(unsigned int options, long * secs)
  53 {
  54     // believe it or, BSD crashes if invalid time returned. FIXME.
  55     if( options == kPEReadTOD)
  56         *secs = 0xb2383c72;
  57
  58     return 0;
  59 }
  60
  61 static int PE_stub_poll_input(__unused unsigned int options, char * c)
  62 {
  63     *c = 0xff;
  64
  65     return 1;
  66 }
  67
  68 static int PE_stub_write_IIC(__unused unsigned char addr, __unused unsigned char reg,
  69                                 __unused unsigned char data)
  70 {
  71     return 1;
  72 }
  73
  74 int (*PE_read_write_time_of_day)(unsigned int options, long * secs)
  75         = PE_stub_read_write_time_of_day;
  76 int (*PE_poll_input)(unsigned int options, char * c)
  77         = PE_stub_poll_input;
  78
  79 int (*PE_write_IIC)(unsigned char addr, unsigned char reg,
  80                                 unsigned char data)
  81         = PE_stub_write_IIC;
  82
  83
  84 int PE_initialize_console( PE_Video * info, int op )
  85 {
  86     static int          last_console = -1;
  87
  88     if (info) {
  89         info->v_offset  = 0;
  90         info->v_length  = 0;
  91         info->v_display = 0;
  92     }
  93
  94     switch( op ) {
  95
  96         case kPEDisableScreen:
  97             initialize_screen(info, op);
  98             last_console = switch_to_serial_console();
  99             kprintf("kPEDisableScreen %d\n",last_console);
 100             break;
 101
 102         case kPEEnableScreen:
 103             initialize_screen(info, op);
 104             if (info) PE_state.video = *info;
 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(info, 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     unsigned int        size;
 123     void **                     map;
 124
 125     PE_init_kprintf(TRUE);
 126     PE_init_printf(TRUE);
 127
 128     if( kSuccess == DTLookupEntry(NULL, "/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         unsigned 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           strlcpy(PE_state.video.v_pixelFormat, "PPPPPPPP",
 173                   sizeof(PE_state.video.v_pixelFormat));
 174         }
 175
 176         if (!vm_initialized)
 177         {
 178             /*
 179              * Setup the OpenFirmware Device Tree routines
 180              * so the console can be found and the right I/O space
 181              * can be used..
 182              */
 183             DTInit(PE_state.deviceTreeHead);
 184
 185             /* Setup gPEClockFrequencyInfo */
 186             pe_identify_machine();
 187         }
 188         else
 189         {
 190             pe_init_debug();
 191
 192         }
 193 }
 194
 195 void PE_create_console( void )
 196 {
 197     if ( PE_state.video.v_display )
 198         PE_initialize_console( &PE_state.video, kPEGraphicsMode );
 199     else
 200         PE_initialize_console( &PE_state.video, kPETextMode );
 201 }
 202
 203 int PE_current_console( PE_Video * info )
 204 {
 205     *info = PE_state.video;
 206
 207     return( 0);
 208 }
 209
 210 void PE_display_icon(   __unused unsigned int flags,
 211                         __unused const char * name )
 212 {
 213     if( default_noroot_data)
 214         vc_display_icon( &default_noroot, default_noroot_data );
 215 }
 216
 217 boolean_t
 218 PE_get_hotkey(unsigned char key)
 219 {
 220     unsigned char * adbKeymap;
 221     unsigned int        size;
 222     DTEntry                     entry;
 223
 224     if( (kSuccess != DTLookupEntry(NULL, "/", &entry))
 225     ||  (kSuccess != DTGetProperty( entry, "AAPL,adb-keymap",
 226             (void **)&adbKeymap, &size))
 227     || (size != 16))
 228
 229         return( FALSE);
 230
 231     if( key > 127)
 232         return( FALSE);
 233
 234     return( adbKeymap[ key / 8 ] & (0x80 >> (key & 7)));
 235 }
 236
 237 static timebase_callback_func gTimebaseCallback;
 238
 239 void PE_register_timebase_callback(timebase_callback_func callback)
 240 {
 241   gTimebaseCallback = callback;
 242
 243   PE_call_timebase_callback();
 244 }
 245
 246 void PE_call_timebase_callback(void)
 247 {
 248   struct timebase_freq_t timebase_freq;
 249   unsigned long          num, den, cnt;
 250
 251   num = gPEClockFrequencyInfo.timebase_frequency_num;
 252   den = gPEClockFrequencyInfo.timebase_frequency_den;
 253
 254   cnt = 2;
 255   while (cnt <= den) {
 256     if ((num % cnt) || (den % cnt)) {
 257       cnt++;
 258       continue;
 259     }
 260
 261     num /= cnt;
 262     den /= cnt;
 263   }
 264
 265   timebase_freq.timebase_num = num;
 266   timebase_freq.timebase_den = den;
 267
 268   if (gTimebaseCallback) gTimebaseCallback(&timebase_freq);
 269 }