pexpert/i386/pe_init.c

   1 /*
   2  * Copyright (c) 2000 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  *    i386 platform expert initialization.
  31  */
  32 #include <sys/types.h>
  33 #include <mach/vm_param.h>
  34 #include <pexpert/protos.h>
  35 #include <pexpert/pexpert.h>
  36 #include <pexpert/boot.h>
  37 #include <pexpert/device_tree.h>
  38 #include <pexpert/pe_images.h>
  39 #include <kern/sched_prim.h>
  40
  41 #include "fakePPCStructs.h"
  42 #include "fakePPCDeviceTree.h"
  43 #include "boot_images.h"
  44
  45 /* extern references */
  46 extern void pe_identify_machine(void * args);
  47 extern void initialize_screen(void *, unsigned int);
  48
  49 /* Local references */
  50 static int         PE_fb_mode  = TEXT_MODE;
  51
  52 /* private globals */
  53 PE_state_t  PE_state;
  54 dt_data     gMemoryMapNode;
  55 dt_data     gDriversProp;
  56 dt_data     gRootpathProp;
  57 dt_data     gCompatibleProp;
  58
  59 /* Clock Frequency Info */
  60 clock_frequency_info_t gPEClockFrequencyInfo;
  61
  62 int PE_initialize_console( PE_Video * info, int op )
  63 {
  64     static int   last_console = -1;
  65     Boot_Video   bootInfo;
  66     Boot_Video * bInfo;
  67
  68     /*
  69      * Refuse changes from outside pexpert.
  70      * The video mode setup by the booter cannot be changed.
  71      */
  72     if ( info )
  73     {
  74         bootInfo.v_baseAddr = info->v_baseAddr;
  75         bootInfo.v_rowBytes      = info->v_rowBytes;
  76         bootInfo.v_width     = info->v_width;
  77         bootInfo.v_height    = info->v_height;
  78         bootInfo.v_depth     = info->v_depth;
  79         bInfo = &bootInfo;
  80         if (info == &PE_state.video) {
  81             bootInfo.v_display  = PE_fb_mode;
  82         } else {
  83             bootInfo.v_display  = GRAPHICS_MODE;
  84         }
  85     }
  86     else
  87         bInfo = 0;
  88
  89     switch ( op ) {
  90
  91         case kPEDisableScreen:
  92             initialize_screen((void *) bInfo, op);
  93 #ifdef FIXME
  94             last_console = switch_to_serial_console();
  95 #endif
  96             kprintf("kPEDisableScreen %d\n", last_console);
  97             break;
  98
  99         case kPEEnableScreen:
 100             initialize_screen((void *) bInfo, op);
 101             kprintf("kPEEnableScreen %d\n", last_console);
 102 #ifdef FIXME
 103             if( last_console != -1)
 104                 switch_to_old_console( last_console);
 105 #endif
 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     long * dt;
 119     int    i;
 120     KernelBootArgs_t *kap = (KernelBootArgs_t *)PE_state.bootArgs;
 121     enum { kMaxBootVar = 128 };
 122     char *rdValue, *platformValue;
 123
 124     typedef struct {
 125         char            name[32];
 126         unsigned long   length;
 127         unsigned long   value[2];
 128     } DriversPackageProp;
 129
 130     PE_init_kprintf(TRUE);
 131     PE_init_printf(TRUE);
 132
 133     /*
 134      * Update the fake device tree with the driver information provided by
 135      * the booter.
 136      */
 137
 138     gDriversProp.length   = kap->numBootDrivers * sizeof(DriversPackageProp);
 139     gMemoryMapNode.length = 2 * sizeof(long);
 140
 141     rdValue = kalloc(kMaxBootVar);
 142     if ( PE_parse_boot_arg("rd", rdValue) ) {
 143         if (*rdValue == '*') {
 144             gRootpathProp.address = (rdValue + 1);
 145         } else {
 146             gRootpathProp.address = rdValue;
 147         }
 148         strcat(rdValue, ",");
 149     } else {
 150         gRootpathProp.address = rdValue;
 151         rdValue[0] = '\0';
 152     }
 153     strcat(rdValue, kap->bootFile);
 154     gRootpathProp.length = strlen(rdValue) + 1;
 155
 156     platformValue = kalloc(kMaxBootVar);
 157     if ( ! PE_parse_boot_arg("platform", platformValue) ) {
 158         strcpy(platformValue, kDefaultPlatformName);
 159     }
 160     gCompatibleProp.address = platformValue;
 161     gCompatibleProp.length = strlen(platformValue) + 1;
 162
 163     dt = (long *) createdt( fakePPCDeviceTree,
 164                   &((boot_args*)PE_state.fakePPCBootArgs)->deviceTreeLength );
 165
 166     kfree(rdValue, kMaxBootVar);
 167     kfree(platformValue, kMaxBootVar);
 168
 169
 170     if ( dt )
 171     {
 172         DriversPackageProp * prop = (DriversPackageProp *) gDriversProp.address;
 173
 174         /* Copy driver info in kernBootStruct to fake device tree */
 175
 176         for ( i = 0; i < kap->numBootDrivers; i++, prop++ )
 177         {
 178             switch ( kap->driverConfig[i].type )
 179             {
 180                 case kBootDriverTypeKEXT:
 181                     sprintf(prop->name, "Driver-%lx", kap->driverConfig[i].address);
 182                     break;
 183
 184                  case kBootDriverTypeMKEXT:
 185                     sprintf(prop->name, "DriversPackage-%lx", kap->driverConfig[i].address);
 186                     break;
 187
 188                 default:
 189                     sprintf(prop->name, "DriverBogus-%lx", kap->driverConfig[i].address);
 190                     break;
 191             }
 192             prop->length   = sizeof(prop->value);
 193             prop->value[0] = kap->driverConfig[i].address;
 194             prop->value[1] = kap->driverConfig[i].size;
 195         }
 196
 197         *((long *)gMemoryMapNode.address) = kap->numBootDrivers + 1;
 198     }
 199
 200     /* Setup powermac_info and powermac_machine_info structures */
 201
 202     ((boot_args*)PE_state.fakePPCBootArgs)->deviceTreeP = (unsigned long *) dt;
 203     ((boot_args*)PE_state.fakePPCBootArgs)->topOfKernelData = (unsigned long) kalloc(0x2000);
 204
 205     /*
 206      * Setup the OpenFirmware Device Tree routines
 207      * so the console can be found and the right I/O space
 208      * can be used..
 209      */
 210     DTInit(dt);
 211
 212     /*
 213      * Fetch the CLUT and the noroot image.
 214      */
 215     bcopy( (void *) (uintptr_t) bootClut, (void *) appleClut8, sizeof(appleClut8) );
 216
 217     default_noroot.width  = kFailedBootWidth;
 218     default_noroot.height = kFailedBootHeight;
 219     default_noroot.dx     = 0;
 220     default_noroot.dy     = kFailedBootOffset;
 221     default_noroot_data   = failedBootPict;
 222
 223     /*
 224      * Initialize the panic UI
 225      */
 226     panic_ui_initialize( (unsigned char *) appleClut8 );
 227
 228     /*
 229      * Initialize the spinning wheel (progress indicator).
 230      */
 231     vc_progress_initialize( &default_progress, default_progress_data,
 232                             (unsigned char *) appleClut8 );
 233
 234     (void) StartIOKit( (void*)dt, PE_state.bootArgs, 0, 0);
 235 }
 236
 237 void PE_init_platform(boolean_t vm_initialized, void * args)
 238 {
 239         if (PE_state.initialized == FALSE)
 240         {
 241             KernelBootArgs_t *kap = (KernelBootArgs_t *) args;
 242
 243             PE_state.initialized        = TRUE;
 244             PE_state.bootArgs           = args;
 245             PE_state.video.v_baseAddr   = kap->video.v_baseAddr;
 246             PE_state.video.v_rowBytes   = kap->video.v_rowBytes;
 247             PE_state.video.v_height     = kap->video.v_height;
 248             PE_state.video.v_width      = kap->video.v_width;
 249             PE_state.video.v_depth      = kap->video.v_depth;
 250             PE_state.video.v_display    = kap->video.v_display;
 251             PE_fb_mode                  = kap->graphicsMode;
 252             PE_state.fakePPCBootArgs    = (boot_args *)&fakePPCBootArgs;
 253             ((boot_args *)PE_state.fakePPCBootArgs)->machineType        = 386;
 254
 255         if (PE_fb_mode == TEXT_MODE)
 256         {
 257             /* Force a text display if the booter did not setup a
 258              * VESA frame buffer.
 259              */
 260             PE_state.video.v_display = 0;
 261         }
 262     }
 263
 264     if (!vm_initialized)
 265     {
 266                 /* Hack! FIXME.. */
 267         outb(0x21, 0xff);   /* Maskout all interrupts Pic1 */
 268         outb(0xa1, 0xff);   /* Maskout all interrupts Pic2 */
 269
 270         pe_identify_machine(args);
 271     }
 272     else
 273     {
 274         pe_init_debug();
 275     }
 276 }
 277
 278 void PE_create_console( void )
 279 {
 280     if ( PE_state.video.v_display )
 281         PE_initialize_console( &PE_state.video, kPEGraphicsMode );
 282     else
 283         PE_initialize_console( &PE_state.video, kPETextMode );
 284 }
 285
 286 int PE_current_console( PE_Video * info )
 287 {
 288     *info = PE_state.video;
 289
 290     if ( PE_fb_mode == TEXT_MODE )
 291     {
 292         /*
 293          * FIXME: Prevent the IOBootFrameBuffer from starting up
 294          * when we are in Text mode.
 295          */
 296         info->v_baseAddr = 0;
 297
 298         /*
 299          * Scale the size of the text screen from characters
 300          * to pixels.
 301          */
 302         info->v_width  *= 8;   // CHARWIDTH
 303         info->v_height *= 16;  // CHARHEIGHT
 304     }
 305
 306     return (0);
 307 }
 308
 309 void PE_display_icon( __unused unsigned int flags, __unused const char * name )
 310 {
 311     if ( default_noroot_data )
 312         vc_display_icon( &default_noroot, default_noroot_data );
 313 }
 314
 315 extern boolean_t PE_get_hotkey( __unused unsigned char key )
 316 {
 317     return (FALSE);
 318 }
 319
 320 static timebase_callback_func gTimebaseCallback;
 321
 322 void PE_register_timebase_callback(timebase_callback_func callback)
 323 {
 324     gTimebaseCallback = callback;
 325
 326     PE_call_timebase_callback();
 327 }
 328
 329 void PE_call_timebase_callback(void)
 330 {
 331   struct timebase_freq_t timebase_freq;
 332   unsigned long          num, den, cnt;
 333
 334   num = gPEClockFrequencyInfo.bus_clock_rate_num * gPEClockFrequencyInfo.bus_to_dec_rate_num;
 335   den = gPEClockFrequencyInfo.bus_clock_rate_den * gPEClockFrequencyInfo.bus_to_dec_rate_den;
 336
 337   cnt = 2;
 338   while (cnt <= den) {
 339     if ((num % cnt) || (den % cnt)) {
 340       cnt++;
 341       continue;
 342     }
 343
 344     num /= cnt;
 345     den /= cnt;
 346   }
 347
 348   timebase_freq.timebase_num = num;
 349   timebase_freq.timebase_den = den;
 350
 351   if (gTimebaseCallback) gTimebaseCallback(&timebase_freq);
 352 }
 353
 354 /*
 355  * The default (non-functional) PE_poll_input handler.
 356  */
 357 static int
 358 PE_stub_poll_input(__unused unsigned int options, char * c)
 359 {
 360     *c = 0xff;
 361     return 1;  /* 0 for success, 1 for unsupported */
 362 }
 363
 364 /*
 365  * Called by the kernel debugger to poll for keyboard input.
 366  * Keyboard drivers may replace the default stub function
 367  * with their polled-mode input function.
 368  */
 369 int (*PE_poll_input)(unsigned int options, char * c)
 370         = PE_stub_poll_input;
 371
 372
 373