pexpert/i386/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  *    i386 platform expert initialization.
  25  */
  26 #include <sys/types.h>
  27 #include <mach/vm_param.h>
  28 #include <pexpert/protos.h>
  29 #include <pexpert/pexpert.h>
  30 #include <pexpert/boot.h>
  31 #include <pexpert/device_tree.h>
  32 #include <pexpert/pe_images.h>
  33 #include <kern/sched_prim.h>
  34 #include <kern/debug.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 /* private globals */
  45 PE_state_t  PE_state;
  46 dt_data     gMemoryMapNode;
  47 dt_data     gDriversProp;
  48 dt_data     gRootpathProp;
  49 dt_data     gCompatibleProp;
  50
  51 /* Clock Frequency Info */
  52 clock_frequency_info_t gPEClockFrequencyInfo;
  53
  54 void *gPEEFISystemTable     = 0;
  55 void *gPEEFIRuntimeServices = 0;
  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   = info->v_display;
  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             kprintf("kPEDisableScreen %d\n", last_console);
  89             if (!console_is_serial())
  90                 last_console = switch_to_serial_console();
  91             break;
  92
  93         case kPEEnableScreen:
  94             initialize_screen((void *) bInfo, op);
  95             kprintf("kPEEnableScreen %d\n", last_console);
  96             if( last_console != -1)
  97                 switch_to_old_console( last_console);
  98             break;
  99
 100         default:
 101             initialize_screen((void *) bInfo, op);
 102             break;
 103     }
 104
 105     return 0;
 106 }
 107
 108 void PE_init_iokit(void)
 109 {
 110     enum { kMaxBootVar = 128 };
 111
 112     typedef struct {
 113         char            name[32];
 114         unsigned long   length;
 115         unsigned long   value[2];
 116     } DriversPackageProp;
 117
 118     boolean_t bootClutInitialized = FALSE;
 119     boolean_t norootInitialized = FALSE;
 120     DTEntry             entry;
 121     int                 size;
 122     void **             map;
 123
 124     PE_init_kprintf(TRUE);
 125     PE_init_printf(TRUE);
 126
 127     kprintf("Kernel boot args: '%s'\n", PE_boot_args());
 128
 129     /*
 130      * Fetch the CLUT and the noroot image.
 131      */
 132         boot_progress_element * bootPict;
 133
 134     if( kSuccess == DTLookupEntry(0, "/chosen/memory-map", &entry)) {
 135         if( kSuccess == DTGetProperty(entry, "BootCLUT", (void **) &map, &size)) {
 136             bcopy( map[0], appleClut8, sizeof(appleClut8) );
 137             bootClutInitialized = TRUE;
 138         }
 139
 140         if( kSuccess == DTGetProperty(entry, "Pict-FailedBoot", (void **) &map, &size)) {
 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             norootInitialized = TRUE;
 148         }
 149     }
 150
 151     if (!bootClutInitialized) {
 152     bcopy( (void *) (uintptr_t) bootClut, (void *) appleClut8, sizeof(appleClut8) );
 153     }
 154
 155     if (!norootInitialized) {
 156     default_noroot.width  = kFailedBootWidth;
 157     default_noroot.height = kFailedBootHeight;
 158     default_noroot.dx     = 0;
 159     default_noroot.dy     = kFailedBootOffset;
 160     default_noroot_data   = failedBootPict;
 161     }
 162
 163     /*
 164      * Initialize the panic UI
 165      */
 166     panic_ui_initialize( (unsigned char *) appleClut8 );
 167
 168     /*
 169      * Initialize the spinning wheel (progress indicator).
 170      */
 171     vc_progress_initialize( &default_progress, default_progress_data,
 172                             (unsigned char *) appleClut8 );
 173
 174     (void) StartIOKit( PE_state.deviceTreeHead, PE_state.bootArgs, gPEEFIRuntimeServices, 0);
 175 }
 176
 177 void PE_init_platform(boolean_t vm_initialized, void * _args)
 178 {
 179     boot_args *args = (boot_args *)_args;
 180
 181     if (PE_state.initialized == FALSE) {
 182             PE_state.initialized        = TRUE;
 183
 184         // New EFI-style
 185         PE_state.bootArgs           = _args;
 186         PE_state.deviceTreeHead     = args->deviceTreeP;
 187         PE_state.video.v_baseAddr   = args->Video.v_baseAddr;
 188         PE_state.video.v_rowBytes   = args->Video.v_rowBytes;
 189         PE_state.video.v_width      = args->Video.v_width;
 190         PE_state.video.v_height     = args->Video.v_height;
 191         PE_state.video.v_depth      = args->Video.v_depth;
 192         PE_state.video.v_display    = args->Video.v_display;
 193         strcpy( PE_state.video.v_pixelFormat, "PPPPPPPP");
 194     }
 195
 196     if (!vm_initialized) {
 197                 /* Hack! FIXME.. */
 198         outb(0x21, 0xff);   /* Maskout all interrupts Pic1 */
 199         outb(0xa1, 0xff);   /* Maskout all interrupts Pic2 */
 200
 201         if (PE_state.deviceTreeHead) {
 202             DTInit(PE_state.deviceTreeHead);
 203     }
 204
 205         pe_identify_machine(args);
 206     } else {
 207         DTEntry entry;
 208         void *ptr;
 209         uint32_t size;
 210
 211         pe_init_debug();
 212     }
 213 }
 214
 215 void PE_create_console( void )
 216 {
 217     if ( PE_state.video.v_display == GRAPHICS_MODE )
 218         PE_initialize_console( &PE_state.video, kPEGraphicsMode );
 219     else
 220         PE_initialize_console( &PE_state.video, kPETextMode );
 221 }
 222
 223 int PE_current_console( PE_Video * info )
 224 {
 225     *info = PE_state.video;
 226
 227     return (0);
 228 }
 229
 230 void PE_display_icon( __unused unsigned int flags, __unused const char * name )
 231 {
 232     if ( default_noroot_data )
 233         vc_display_icon( &default_noroot, default_noroot_data );
 234 }
 235
 236 extern boolean_t PE_get_hotkey( __unused unsigned char key )
 237 {
 238     return (FALSE);
 239 }
 240
 241 static timebase_callback_func gTimebaseCallback;
 242
 243 void PE_register_timebase_callback(timebase_callback_func callback)
 244 {
 245     gTimebaseCallback = callback;
 246
 247     PE_call_timebase_callback();
 248 }
 249
 250 void PE_call_timebase_callback(void)
 251 {
 252   struct timebase_freq_t timebase_freq;
 253   unsigned long          num, den, cnt;
 254
 255   num = gPEClockFrequencyInfo.bus_clock_rate_num * gPEClockFrequencyInfo.bus_to_dec_rate_num;
 256   den = gPEClockFrequencyInfo.bus_clock_rate_den * gPEClockFrequencyInfo.bus_to_dec_rate_den;
 257
 258   cnt = 2;
 259   while (cnt <= den) {
 260     if ((num % cnt) || (den % cnt)) {
 261       cnt++;
 262       continue;
 263     }
 264
 265     num /= cnt;
 266     den /= cnt;
 267   }
 268
 269   timebase_freq.timebase_num = num;
 270   timebase_freq.timebase_den = den;
 271
 272   if (gTimebaseCallback) gTimebaseCallback(&timebase_freq);
 273 }
 274
 275 /*
 276  * The default (non-functional) PE_poll_input handler.
 277  */
 278 static int
 279 PE_stub_poll_input(__unused unsigned int options, char * c)
 280 {
 281     *c = 0xff;
 282     return 1;  /* 0 for success, 1 for unsupported */
 283 }
 284
 285 /*
 286  * Called by the kernel debugger to poll for keyboard input.
 287  * Keyboard drivers may replace the default stub function
 288  * with their polled-mode input function.
 289  */
 290 int (*PE_poll_input)(unsigned int options, char * c)
 291         = PE_stub_poll_input;
 292
 293
 294