pexpert/i386/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  *    i386 platform expert initialization.
  31  */
  32 #include <sys/types.h>
  33 #include <mach/vm_param.h>
  34 #include <machine/machine_routines.h>
  35 #include <pexpert/protos.h>
  36 #include <pexpert/pexpert.h>
  37 #include <pexpert/boot.h>
  38 #include <pexpert/device_tree.h>
  39 #include <pexpert/pe_images.h>
  40 #include <kern/sched_prim.h>
  41 #include <kern/debug.h>
  42
  43 #include "boot_images.h"
  44
  45 /* extern references */
  46 extern void pe_identify_machine(void * args);
  47
  48 /* private globals */
  49 PE_state_t  PE_state;
  50
  51 /* Clock Frequency Info */
  52 clock_frequency_info_t gPEClockFrequencyInfo;
  53
  54 void *gPEEFISystemTable;
  55 void *gPEEFIRuntimeServices;
  56
  57 int PE_initialize_console( PE_Video * info, int op )
  58 {
  59     static int   last_console = -1;
  60
  61     if (info) {
  62         info->v_offset  = 0;
  63         info->v_length  = 0;
  64         info->v_display = GRAPHICS_MODE;
  65     }
  66
  67     switch ( op ) {
  68
  69         case kPEDisableScreen:
  70             initialize_screen(info, op);
  71             kprintf("kPEDisableScreen %d\n", last_console);
  72             if (!console_is_serial())
  73                 last_console = switch_to_serial_console();
  74             break;
  75
  76         case kPEEnableScreen:
  77             initialize_screen(info, op);
  78             if (info) PE_state.video = *info;
  79             kprintf("kPEEnableScreen %d\n", last_console);
  80             if( last_console != -1)
  81                 switch_to_old_console( last_console);
  82             break;
  83
  84         case kPEBaseAddressChange:
  85             if (info) PE_state.video = *info;
  86             /* fall thru */
  87
  88         default:
  89             initialize_screen(info, op);
  90             break;
  91     }
  92
  93     return 0;
  94 }
  95
  96 void PE_init_iokit(void)
  97 {
  98     enum { kMaxBootVar = 128 };
  99
 100     typedef struct {
 101         char            name[32];
 102         unsigned long   length;
 103         unsigned long   value[2];
 104     } DriversPackageProp;
 105
 106     boolean_t bootClutInitialized = FALSE;
 107     boolean_t norootInitialized = FALSE;
 108     DTEntry             entry;
 109     unsigned int        size;
 110     uint32_t            *map;
 111         boot_progress_element *bootPict;
 112
 113     PE_init_kprintf(TRUE);
 114     PE_init_printf(TRUE);
 115
 116     kprintf("Kernel boot args: '%s'\n", PE_boot_args());
 117
 118     /*
 119      * Fetch the CLUT and the noroot image.
 120      */
 121
 122     if( kSuccess == DTLookupEntry(NULL, "/chosen/memory-map", &entry)) {
 123         if( kSuccess == DTGetProperty(entry, "BootCLUT", (void **) &map, &size)) {
 124             if (sizeof(appleClut8) <= map[1]) {
 125                 bcopy( (void *)ml_static_ptovirt(map[0]), appleClut8, sizeof(appleClut8) );
 126                 bootClutInitialized = TRUE;
 127             }
 128         }
 129
 130         if( kSuccess == DTGetProperty(entry, "Pict-FailedBoot", (void **) &map, &size)) {
 131             bootPict = (boot_progress_element *) ml_static_ptovirt(map[0]);
 132             default_noroot.width  = bootPict->width;
 133             default_noroot.height = bootPict->height;
 134             default_noroot.dx     = 0;
 135             default_noroot.dy     = bootPict->yOffset;
 136             default_noroot_data   = &bootPict->data[0];
 137             norootInitialized = TRUE;
 138         }
 139     }
 140
 141     if (!bootClutInitialized) {
 142     bcopy( (void *) (uintptr_t) bootClut, (void *) appleClut8, sizeof(appleClut8) );
 143     }
 144
 145     if (!norootInitialized) {
 146     default_noroot.width  = kFailedBootWidth;
 147     default_noroot.height = kFailedBootHeight;
 148     default_noroot.dx     = 0;
 149     default_noroot.dy     = kFailedBootOffset;
 150     default_noroot_data   = failedBootPict;
 151     }
 152
 153     /*
 154      * Initialize the panic UI
 155      */
 156     panic_ui_initialize( (unsigned char *) appleClut8 );
 157
 158     /*
 159      * Initialize the spinning wheel (progress indicator).
 160      */
 161     vc_progress_initialize( &default_progress, default_progress_data,
 162                             (unsigned char *) appleClut8 );
 163
 164     (void) StartIOKit( PE_state.deviceTreeHead, PE_state.bootArgs, gPEEFIRuntimeServices, NULL);
 165 }
 166
 167 void PE_init_platform(boolean_t vm_initialized, void * _args)
 168 {
 169     boot_args *args = (boot_args *)_args;
 170
 171     if (PE_state.initialized == FALSE) {
 172             PE_state.initialized        = TRUE;
 173
 174         // New EFI-style
 175         PE_state.bootArgs           = _args;
 176         PE_state.deviceTreeHead     = (void *) ml_static_ptovirt(args->deviceTreeP);
 177         PE_state.video.v_baseAddr   = args->Video.v_baseAddr; // remains physical address
 178         PE_state.video.v_rowBytes   = args->Video.v_rowBytes;
 179         PE_state.video.v_width      = args->Video.v_width;
 180         PE_state.video.v_height     = args->Video.v_height;
 181         PE_state.video.v_depth      = args->Video.v_depth;
 182         PE_state.video.v_display    = args->Video.v_display;
 183         strlcpy(PE_state.video.v_pixelFormat, "PPPPPPPP",
 184                 sizeof(PE_state.video.v_pixelFormat));
 185     }
 186
 187     if (!vm_initialized) {
 188
 189         if (PE_state.deviceTreeHead) {
 190             DTInit(PE_state.deviceTreeHead);
 191         }
 192
 193         pe_identify_machine(args);
 194     } else {
 195         pe_init_debug();
 196     }
 197
 198 }
 199
 200 void PE_create_console( void )
 201 {
 202     if ( PE_state.video.v_display == GRAPHICS_MODE )
 203         PE_initialize_console( &PE_state.video, kPEGraphicsMode );
 204     else
 205         PE_initialize_console( &PE_state.video, kPETextMode );
 206 }
 207
 208 int PE_current_console( PE_Video * info )
 209 {
 210     *info = PE_state.video;
 211
 212     return (0);
 213 }
 214
 215 void PE_display_icon( __unused unsigned int flags, __unused const char * name )
 216 {
 217     if ( default_noroot_data )
 218         vc_display_icon( &default_noroot, default_noroot_data );
 219 }
 220
 221 boolean_t
 222 PE_get_hotkey(__unused unsigned char key)
 223 {
 224     return (FALSE);
 225 }
 226
 227 static timebase_callback_func gTimebaseCallback;
 228
 229 void PE_register_timebase_callback(timebase_callback_func callback)
 230 {
 231     gTimebaseCallback = callback;
 232
 233     PE_call_timebase_callback();
 234 }
 235
 236 void PE_call_timebase_callback(void)
 237 {
 238   struct timebase_freq_t timebase_freq;
 239   unsigned long          num, den, cnt;
 240
 241   num = gPEClockFrequencyInfo.bus_clock_rate_num * gPEClockFrequencyInfo.bus_to_dec_rate_num;
 242   den = gPEClockFrequencyInfo.bus_clock_rate_den * gPEClockFrequencyInfo.bus_to_dec_rate_den;
 243
 244   cnt = 2;
 245   while (cnt <= den) {
 246     if ((num % cnt) || (den % cnt)) {
 247       cnt++;
 248       continue;
 249     }
 250
 251     num /= cnt;
 252     den /= cnt;
 253   }
 254
 255   timebase_freq.timebase_num = num;
 256   timebase_freq.timebase_den = den;
 257
 258   if (gTimebaseCallback) gTimebaseCallback(&timebase_freq);
 259 }
 260
 261 /*
 262  * The default (non-functional) PE_poll_input handler.
 263  */
 264 static int
 265 PE_stub_poll_input(__unused unsigned int options, char * c)
 266 {
 267     *c = 0xff;
 268     return 1;  /* 0 for success, 1 for unsupported */
 269 }
 270
 271 /*
 272  * Called by the kernel debugger to poll for keyboard input.
 273  * Keyboard drivers may replace the default stub function
 274  * with their polled-mode input function.
 275  */
 276 int (*PE_poll_input)(unsigned int options, char * c)
 277         = PE_stub_poll_input;
 278
 279 boolean_t
 280 PE_reboot_on_panic(void)
 281 {
 282         return FALSE;
 283 }