pexpert/i386/pe_init.c

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_OSREFERENCE_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
  10  * License may not be used to create, or enable the creation or
  11  * redistribution of, unlawful or unlicensed copies of an Apple operating
  12  * system, or to circumvent, violate, or enable the circumvention or
  13  * violation of, any terms of an Apple operating system software license
  14  * agreement.
  15  *
  16  * Please obtain a copy of the License at
  17  * http://www.opensource.apple.com/apsl/ and read it before using this
  18  * file.
  19  *
  20  * The Original Code and all software distributed under the License are
  21  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  22  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  23  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  24  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  25  * Please see the License for the specific language governing rights and
  26  * limitations under the License.
  27  *
  28  * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
  29  */
  30 /*
  31  * file: pe_init.c
  32  *    i386 platform expert initialization.
  33  */
  34 #include <sys/types.h>
  35 #include <mach/vm_param.h>
  36 #include <pexpert/protos.h>
  37 #include <pexpert/pexpert.h>
  38 #include <pexpert/boot.h>
  39 #include <pexpert/device_tree.h>
  40 #include <pexpert/pe_images.h>
  41 #include <kern/sched_prim.h>
  42 #include <kern/debug.h>
  43
  44 #include "fakePPCStructs.h"
  45 #include "fakePPCDeviceTree.h"
  46 #include "boot_images.h"
  47
  48 /* extern references */
  49 extern void pe_identify_machine(void * args);
  50 extern void initialize_screen(void *, unsigned int);
  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 void *gPEEFISystemTable     = 0;
  63 void *gPEEFIRuntimeServices = 0;
  64
  65 int PE_initialize_console( PE_Video * info, int op )
  66 {
  67     static int   last_console = -1;
  68     Boot_Video   bootInfo;
  69     Boot_Video * bInfo;
  70
  71     /*
  72      * Refuse changes from outside pexpert.
  73      * The video mode setup by the booter cannot be changed.
  74      */
  75     if ( info )
  76     {
  77         bootInfo.v_baseAddr = info->v_baseAddr;
  78         bootInfo.v_rowBytes      = info->v_rowBytes;
  79         bootInfo.v_width     = info->v_width;
  80         bootInfo.v_height    = info->v_height;
  81         bootInfo.v_depth     = info->v_depth;
  82         bInfo = &bootInfo;
  83         if (info == &PE_state.video) {
  84             bootInfo.v_display   = info->v_display;
  85         } else {
  86             bootInfo.v_display  = GRAPHICS_MODE;
  87         }
  88     }
  89     else
  90         bInfo = 0;
  91
  92     switch ( op ) {
  93
  94         case kPEDisableScreen:
  95             initialize_screen((void *) bInfo, op);
  96             kprintf("kPEDisableScreen %d\n", last_console);
  97             if (!console_is_serial())
  98                 last_console = switch_to_serial_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 void PE_init_iokit(void)
 117 {
 118     enum { kMaxBootVar = 128 };
 119
 120     typedef struct {
 121         char            name[32];
 122         unsigned long   length;
 123         unsigned long   value[2];
 124     } DriversPackageProp;
 125
 126     boolean_t bootClutInitialized = FALSE;
 127     boolean_t norootInitialized = FALSE;
 128     DTEntry             entry;
 129     int                 size;
 130     void **             map;
 131
 132     PE_init_kprintf(TRUE);
 133     PE_init_printf(TRUE);
 134
 135     kprintf("Kernel boot args: '%s'\n", PE_boot_args());
 136
 137     /*
 138      * Fetch the CLUT and the noroot image.
 139      */
 140         boot_progress_element * bootPict;
 141
 142     if( kSuccess == DTLookupEntry(0, "/chosen/memory-map", &entry)) {
 143         if( kSuccess == DTGetProperty(entry, "BootCLUT", (void **) &map, &size)) {
 144             bcopy( map[0], appleClut8, sizeof(appleClut8) );
 145             bootClutInitialized = TRUE;
 146         }
 147
 148         if( kSuccess == DTGetProperty(entry, "Pict-FailedBoot", (void **) &map, &size)) {
 149             bootPict = (boot_progress_element *) map[0];
 150             default_noroot.width  = bootPict->width;
 151             default_noroot.height = bootPict->height;
 152             default_noroot.dx     = 0;
 153             default_noroot.dy     = bootPict->yOffset;
 154             default_noroot_data   = &bootPict->data[0];
 155             norootInitialized = TRUE;
 156         }
 157     }
 158
 159     if (!bootClutInitialized) {
 160     bcopy( (void *) (uintptr_t) bootClut, (void *) appleClut8, sizeof(appleClut8) );
 161     }
 162
 163     if (!norootInitialized) {
 164     default_noroot.width  = kFailedBootWidth;
 165     default_noroot.height = kFailedBootHeight;
 166     default_noroot.dx     = 0;
 167     default_noroot.dy     = kFailedBootOffset;
 168     default_noroot_data   = failedBootPict;
 169     }
 170
 171     /*
 172      * Initialize the panic UI
 173      */
 174     panic_ui_initialize( (unsigned char *) appleClut8 );
 175
 176     /*
 177      * Initialize the spinning wheel (progress indicator).
 178      */
 179     vc_progress_initialize( &default_progress, default_progress_data,
 180                             (unsigned char *) appleClut8 );
 181
 182     (void) StartIOKit( PE_state.deviceTreeHead, PE_state.bootArgs, gPEEFIRuntimeServices, 0);
 183 }
 184
 185 void PE_init_platform(boolean_t vm_initialized, void * _args)
 186 {
 187     boot_args *args = (boot_args *)_args;
 188
 189     if (PE_state.initialized == FALSE) {
 190             PE_state.initialized        = TRUE;
 191
 192         // New EFI-style
 193         PE_state.bootArgs           = _args;
 194         PE_state.deviceTreeHead     = args->deviceTreeP;
 195         PE_state.video.v_baseAddr   = args->Video.v_baseAddr;
 196         PE_state.video.v_rowBytes   = args->Video.v_rowBytes;
 197         PE_state.video.v_width      = args->Video.v_width;
 198         PE_state.video.v_height     = args->Video.v_height;
 199         PE_state.video.v_depth      = args->Video.v_depth;
 200         PE_state.video.v_display    = args->Video.v_display;
 201         strcpy( PE_state.video.v_pixelFormat, "PPPPPPPP");
 202     }
 203
 204     if (!vm_initialized) {
 205                 /* Hack! FIXME.. */
 206         outb(0x21, 0xff);   /* Maskout all interrupts Pic1 */
 207         outb(0xa1, 0xff);   /* Maskout all interrupts Pic2 */
 208
 209         if (PE_state.deviceTreeHead) {
 210             DTInit(PE_state.deviceTreeHead);
 211     }
 212
 213         pe_identify_machine(args);
 214     } else {
 215         DTEntry entry;
 216         void *ptr;
 217         uint32_t size;
 218
 219         pe_init_debug();
 220     }
 221 }
 222
 223 void PE_create_console( void )
 224 {
 225     if ( PE_state.video.v_display == GRAPHICS_MODE )
 226         PE_initialize_console( &PE_state.video, kPEGraphicsMode );
 227     else
 228         PE_initialize_console( &PE_state.video, kPETextMode );
 229 }
 230
 231 int PE_current_console( PE_Video * info )
 232 {
 233     *info = PE_state.video;
 234
 235     return (0);
 236 }
 237
 238 void PE_display_icon( __unused unsigned int flags, __unused const char * name )
 239 {
 240     if ( default_noroot_data )
 241         vc_display_icon( &default_noroot, default_noroot_data );
 242 }
 243
 244 extern boolean_t PE_get_hotkey( __unused unsigned char key )
 245 {
 246     return (FALSE);
 247 }
 248
 249 static timebase_callback_func gTimebaseCallback;
 250
 251 void PE_register_timebase_callback(timebase_callback_func callback)
 252 {
 253     gTimebaseCallback = callback;
 254
 255     PE_call_timebase_callback();
 256 }
 257
 258 void PE_call_timebase_callback(void)
 259 {
 260   struct timebase_freq_t timebase_freq;
 261   unsigned long          num, den, cnt;
 262
 263   num = gPEClockFrequencyInfo.bus_clock_rate_num * gPEClockFrequencyInfo.bus_to_dec_rate_num;
 264   den = gPEClockFrequencyInfo.bus_clock_rate_den * gPEClockFrequencyInfo.bus_to_dec_rate_den;
 265
 266   cnt = 2;
 267   while (cnt <= den) {
 268     if ((num % cnt) || (den % cnt)) {
 269       cnt++;
 270       continue;
 271     }
 272
 273     num /= cnt;
 274     den /= cnt;
 275   }
 276
 277   timebase_freq.timebase_num = num;
 278   timebase_freq.timebase_den = den;
 279
 280   if (gTimebaseCallback) gTimebaseCallback(&timebase_freq);
 281 }
 282
 283 /*
 284  * The default (non-functional) PE_poll_input handler.
 285  */
 286 static int
 287 PE_stub_poll_input(__unused unsigned int options, char * c)
 288 {
 289     *c = 0xff;
 290     return 1;  /* 0 for success, 1 for unsupported */
 291 }
 292
 293 /*
 294  * Called by the kernel debugger to poll for keyboard input.
 295  * Keyboard drivers may replace the default stub function
 296  * with their polled-mode input function.
 297  */
 298 int (*PE_poll_input)(unsigned int options, char * c)
 299         = PE_stub_poll_input;
 300
 301
 302