pexpert/i386/pe_init.c

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_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. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23 /*
  24  * file: pe_init.c
  25  *    i386 platform expert initialization.
  26  */
  27 #include <sys/types.h>
  28 #include <mach/vm_param.h>
  29 #include <pexpert/protos.h>
  30 #include <pexpert/pexpert.h>
  31 #include <pexpert/boot.h>
  32 #include <pexpert/device_tree.h>
  33 #include <pexpert/pe_images.h>
  34 #include <kern/sched_prim.h>
  35
  36 #include "fakePPCStructs.h"
  37 #include "fakePPCDeviceTree.h"
  38 #include "boot_images.h"
  39
  40 /* extern references */
  41 extern void pe_identify_machine(void * args);
  42 extern void initialize_screen(void *, unsigned int);
  43
  44 /* Local references */
  45 static int         PE_fb_mode  = TEXT_MODE;
  46
  47 /* private globals */
  48 PE_state_t  PE_state;
  49 dt_data     gMemoryMapNode;
  50 dt_data     gDriversProp;
  51 dt_data     gRootpathProp;
  52 dt_data     gCompatibleProp;
  53
  54 /* Clock Frequency Info */
  55 clock_frequency_info_t gPEClockFrequencyInfo;
  56
  57 int PE_initialize_console( PE_Video * info, int op )
  58 {
  59     static int   last_console = -1;
  60     Boot_Video   bootInfo;
  61     Boot_Video * bInfo;
  62
  63     /*
  64      * Refuse changes from outside pexpert.
  65      * The video mode setup by the booter cannot be changed.
  66      */
  67     if ( info )
  68     {
  69         bootInfo.v_baseAddr = info->v_baseAddr;
  70         bootInfo.v_rowBytes      = info->v_rowBytes;
  71         bootInfo.v_width     = info->v_width;
  72         bootInfo.v_height    = info->v_height;
  73         bootInfo.v_depth     = info->v_depth;
  74         bInfo = &bootInfo;
  75         if (info == &PE_state.video) {
  76             bootInfo.v_display  = PE_fb_mode;
  77         } else {
  78             bootInfo.v_display  = GRAPHICS_MODE;
  79         }
  80     }
  81     else
  82         bInfo = 0;
  83
  84     switch ( op ) {
  85
  86         case kPEDisableScreen:
  87             initialize_screen((void *) bInfo, op);
  88 #ifdef FIXME
  89             last_console = switch_to_serial_console();
  90 #endif
  91             kprintf("kPEDisableScreen %d\n", last_console);
  92             break;
  93
  94         case kPEEnableScreen:
  95             initialize_screen((void *) bInfo, op);
  96             kprintf("kPEEnableScreen %d\n", last_console);
  97 #ifdef FIXME
  98             if( last_console != -1)
  99                 switch_to_old_console( last_console);
 100 #endif
 101             break;
 102
 103         default:
 104             initialize_screen((void *) bInfo, op);
 105             break;
 106     }
 107
 108     return 0;
 109 }
 110
 111 void PE_init_iokit(void)
 112 {
 113     long * dt;
 114     int    i;
 115     KernelBootArgs_t *kap = (KernelBootArgs_t *)PE_state.bootArgs;
 116     enum { kMaxBootVar = 128 };
 117     char *rdValue, *platformValue;
 118
 119     typedef struct {
 120         char            name[32];
 121         unsigned long   length;
 122         unsigned long   value[2];
 123     } DriversPackageProp;
 124
 125     PE_init_kprintf(TRUE);
 126     PE_init_printf(TRUE);
 127
 128     /*
 129      * Update the fake device tree with the driver information provided by
 130      * the booter.
 131      */
 132
 133     gDriversProp.length   = kap->numBootDrivers * sizeof(DriversPackageProp);
 134     gMemoryMapNode.length = 2 * sizeof(long);
 135
 136     rdValue = kalloc(kMaxBootVar);
 137     if ( PE_parse_boot_arg("rd", rdValue) ) {
 138         if (*rdValue == '*') {
 139             gRootpathProp.address = (rdValue + 1);
 140         } else {
 141             gRootpathProp.address = rdValue;
 142         }
 143         strcat(rdValue, ",");
 144     } else {
 145         gRootpathProp.address = rdValue;
 146         rdValue[0] = '\0';
 147     }
 148     strcat(rdValue, kap->bootFile);
 149     gRootpathProp.length = strlen(rdValue) + 1;
 150
 151     platformValue = kalloc(kMaxBootVar);
 152     if ( ! PE_parse_boot_arg("platform", platformValue) ) {
 153         strcpy(platformValue, kDefaultPlatformName);
 154     }
 155     gCompatibleProp.address = platformValue;
 156     gCompatibleProp.length = strlen(platformValue) + 1;
 157
 158     dt = (long *) createdt( fakePPCDeviceTree,
 159                   &((boot_args*)PE_state.fakePPCBootArgs)->deviceTreeLength );
 160
 161     kfree(rdValue, kMaxBootVar);
 162     kfree(platformValue, kMaxBootVar);
 163
 164
 165     if ( dt )
 166     {
 167         DriversPackageProp * prop = (DriversPackageProp *) gDriversProp.address;
 168
 169         /* Copy driver info in kernBootStruct to fake device tree */
 170
 171         for ( i = 0; i < kap->numBootDrivers; i++, prop++ )
 172         {
 173             switch ( kap->driverConfig[i].type )
 174             {
 175                 case kBootDriverTypeKEXT:
 176                     sprintf(prop->name, "Driver-%lx", kap->driverConfig[i].address);
 177                     break;
 178
 179                  case kBootDriverTypeMKEXT:
 180                     sprintf(prop->name, "DriversPackage-%lx", kap->driverConfig[i].address);
 181                     break;
 182
 183                 default:
 184                     sprintf(prop->name, "DriverBogus-%lx", kap->driverConfig[i].address);
 185                     break;
 186             }
 187             prop->length   = sizeof(prop->value);
 188             prop->value[0] = kap->driverConfig[i].address;
 189             prop->value[1] = kap->driverConfig[i].size;
 190         }
 191
 192         *((long *)gMemoryMapNode.address) = kap->numBootDrivers + 1;
 193     }
 194
 195     /* Setup powermac_info and powermac_machine_info structures */
 196
 197     ((boot_args*)PE_state.fakePPCBootArgs)->deviceTreeP = (unsigned long *) dt;
 198     ((boot_args*)PE_state.fakePPCBootArgs)->topOfKernelData = (unsigned long) kalloc(0x2000);
 199
 200     /*
 201      * Setup the OpenFirmware Device Tree routines
 202      * so the console can be found and the right I/O space
 203      * can be used..
 204      */
 205     DTInit(dt);
 206
 207     /*
 208      * Fetch the CLUT and the noroot image.
 209      */
 210     bcopy( (void *) (uintptr_t) bootClut, (void *) appleClut8, sizeof(appleClut8) );
 211
 212     default_noroot.width  = kFailedBootWidth;
 213     default_noroot.height = kFailedBootHeight;
 214     default_noroot.dx     = 0;
 215     default_noroot.dy     = kFailedBootOffset;
 216     default_noroot_data   = failedBootPict;
 217
 218     /*
 219      * Initialize the panic UI
 220      */
 221     panic_ui_initialize( (unsigned char *) appleClut8 );
 222
 223     /*
 224      * Initialize the spinning wheel (progress indicator).
 225      */
 226     vc_progress_initialize( &default_progress, default_progress_data,
 227                             (unsigned char *) appleClut8 );
 228
 229     (void) StartIOKit( (void*)dt, PE_state.bootArgs, 0, 0);
 230 }
 231
 232 void PE_init_platform(boolean_t vm_initialized, void * args)
 233 {
 234         if (PE_state.initialized == FALSE)
 235         {
 236             KernelBootArgs_t *kap = (KernelBootArgs_t *) args;
 237
 238             PE_state.initialized        = TRUE;
 239             PE_state.bootArgs           = args;
 240             PE_state.video.v_baseAddr   = kap->video.v_baseAddr;
 241             PE_state.video.v_rowBytes   = kap->video.v_rowBytes;
 242             PE_state.video.v_height     = kap->video.v_height;
 243             PE_state.video.v_width      = kap->video.v_width;
 244             PE_state.video.v_depth      = kap->video.v_depth;
 245             PE_state.video.v_display    = kap->video.v_display;
 246             PE_fb_mode                  = kap->graphicsMode;
 247             PE_state.fakePPCBootArgs    = (boot_args *)&fakePPCBootArgs;
 248             ((boot_args *)PE_state.fakePPCBootArgs)->machineType        = 386;
 249
 250         if (PE_fb_mode == TEXT_MODE)
 251         {
 252             /* Force a text display if the booter did not setup a
 253              * VESA frame buffer.
 254              */
 255             PE_state.video.v_display = 0;
 256         }
 257     }
 258
 259     if (!vm_initialized)
 260     {
 261                 /* Hack! FIXME.. */
 262         outb(0x21, 0xff);   /* Maskout all interrupts Pic1 */
 263         outb(0xa1, 0xff);   /* Maskout all interrupts Pic2 */
 264
 265         pe_identify_machine(args);
 266     }
 267     else
 268     {
 269         pe_init_debug();
 270     }
 271 }
 272
 273 void PE_create_console( void )
 274 {
 275     if ( PE_state.video.v_display )
 276         PE_initialize_console( &PE_state.video, kPEGraphicsMode );
 277     else
 278         PE_initialize_console( &PE_state.video, kPETextMode );
 279 }
 280
 281 int PE_current_console( PE_Video * info )
 282 {
 283     *info = PE_state.video;
 284
 285     if ( PE_fb_mode == TEXT_MODE )
 286     {
 287         /*
 288          * FIXME: Prevent the IOBootFrameBuffer from starting up
 289          * when we are in Text mode.
 290          */
 291         info->v_baseAddr = 0;
 292
 293         /*
 294          * Scale the size of the text screen from characters
 295          * to pixels.
 296          */
 297         info->v_width  *= 8;   // CHARWIDTH
 298         info->v_height *= 16;  // CHARHEIGHT
 299     }
 300
 301     return (0);
 302 }
 303
 304 void PE_display_icon( __unused unsigned int flags, __unused const char * name )
 305 {
 306     if ( default_noroot_data )
 307         vc_display_icon( &default_noroot, default_noroot_data );
 308 }
 309
 310 extern boolean_t PE_get_hotkey( __unused unsigned char key )
 311 {
 312     return (FALSE);
 313 }
 314
 315 static timebase_callback_func gTimebaseCallback;
 316
 317 void PE_register_timebase_callback(timebase_callback_func callback)
 318 {
 319     gTimebaseCallback = callback;
 320
 321     PE_call_timebase_callback();
 322 }
 323
 324 void PE_call_timebase_callback(void)
 325 {
 326   struct timebase_freq_t timebase_freq;
 327   unsigned long          num, den, cnt;
 328
 329   num = gPEClockFrequencyInfo.bus_clock_rate_num * gPEClockFrequencyInfo.bus_to_dec_rate_num;
 330   den = gPEClockFrequencyInfo.bus_clock_rate_den * gPEClockFrequencyInfo.bus_to_dec_rate_den;
 331
 332   cnt = 2;
 333   while (cnt <= den) {
 334     if ((num % cnt) || (den % cnt)) {
 335       cnt++;
 336       continue;
 337     }
 338
 339     num /= cnt;
 340     den /= cnt;
 341   }
 342
 343   timebase_freq.timebase_num = num;
 344   timebase_freq.timebase_den = den;
 345
 346   if (gTimebaseCallback) gTimebaseCallback(&timebase_freq);
 347 }
 348
 349 /*
 350  * The default (non-functional) PE_poll_input handler.
 351  */
 352 static int
 353 PE_stub_poll_input(__unused unsigned int options, char * c)
 354 {
 355     *c = 0xff;
 356     return 1;  /* 0 for success, 1 for unsupported */
 357 }
 358
 359 /*
 360  * Called by the kernel debugger to poll for keyboard input.
 361  * Keyboard drivers may replace the default stub function
 362  * with their polled-mode input function.
 363  */
 364 int (*PE_poll_input)(unsigned int options, char * c)
 365         = PE_stub_poll_input;
 366
 367
 368