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 #include <kern/debug.h>
  41
  42 #include "fakePPCStructs.h"
  43 #include "fakePPCDeviceTree.h"
  44 #include "boot_images.h"
  45
  46 /* extern references */
  47 extern void pe_identify_machine(void * args);
  48 extern void initialize_screen(void *, unsigned int);
  49
  50 /* private globals */
  51 PE_state_t  PE_state;
  52 dt_data     gMemoryMapNode;
  53 dt_data     gDriversProp;
  54 dt_data     gRootpathProp;
  55 dt_data     gCompatibleProp;
  56
  57 /* Clock Frequency Info */
  58 clock_frequency_info_t gPEClockFrequencyInfo;
  59
  60 void *gPEEFISystemTable     = 0;
  61 void *gPEEFIRuntimeServices = 0;
  62
  63 int PE_initialize_console( PE_Video * info, int op )
  64 {
  65     static int   last_console = -1;
  66     Boot_Video   bootInfo;
  67     Boot_Video * bInfo;
  68
  69     /*
  70      * Refuse changes from outside pexpert.
  71      * The video mode setup by the booter cannot be changed.
  72      */
  73     if ( info )
  74     {
  75         bootInfo.v_baseAddr = info->v_baseAddr;
  76         bootInfo.v_rowBytes      = info->v_rowBytes;
  77         bootInfo.v_width     = info->v_width;
  78         bootInfo.v_height    = info->v_height;
  79         bootInfo.v_depth     = info->v_depth;
  80         bInfo = &bootInfo;
  81         if (info == &PE_state.video) {
  82             bootInfo.v_display   = info->v_display;
  83         } else {
  84             bootInfo.v_display  = GRAPHICS_MODE;
  85         }
  86     }
  87     else
  88         bInfo = 0;
  89
  90     switch ( op ) {
  91
  92         case kPEDisableScreen:
  93             initialize_screen((void *) bInfo, op);
  94             kprintf("kPEDisableScreen %d\n", last_console);
  95             if (!console_is_serial())
  96                 last_console = switch_to_serial_console();
  97             break;
  98
  99         case kPEEnableScreen:
 100             initialize_screen((void *) bInfo, op);
 101             kprintf("kPEEnableScreen %d\n", last_console);
 102             if( last_console != -1)
 103                 switch_to_old_console( last_console);
 104             break;
 105
 106         default:
 107             initialize_screen((void *) bInfo, op);
 108             break;
 109     }
 110
 111     return 0;
 112 }
 113
 114 void PE_init_iokit(void)
 115 {
 116     enum { kMaxBootVar = 128 };
 117
 118     typedef struct {
 119         char            name[32];
 120         unsigned long   length;
 121         unsigned long   value[2];
 122     } DriversPackageProp;
 123
 124     boolean_t bootClutInitialized = FALSE;
 125     boolean_t norootInitialized = FALSE;
 126     DTEntry             entry;
 127     int                 size;
 128     void **             map;
 129
 130     PE_init_kprintf(TRUE);
 131     PE_init_printf(TRUE);
 132
 133     kprintf("Kernel boot args: '%s'\n", PE_boot_args());
 134
 135     /*
 136      * Fetch the CLUT and the noroot image.
 137      */
 138         boot_progress_element * bootPict;
 139
 140     if( kSuccess == DTLookupEntry(0, "/chosen/memory-map", &entry)) {
 141         if( kSuccess == DTGetProperty(entry, "BootCLUT", (void **) &map, &size)) {
 142             bcopy( map[0], appleClut8, sizeof(appleClut8) );
 143             bootClutInitialized = TRUE;
 144         }
 145
 146         if( kSuccess == DTGetProperty(entry, "Pict-FailedBoot", (void **) &map, &size)) {
 147             bootPict = (boot_progress_element *) map[0];
 148             default_noroot.width  = bootPict->width;
 149             default_noroot.height = bootPict->height;
 150             default_noroot.dx     = 0;
 151             default_noroot.dy     = bootPict->yOffset;
 152             default_noroot_data   = &bootPict->data[0];
 153             norootInitialized = TRUE;
 154         }
 155     }
 156
 157     if (!bootClutInitialized) {
 158     bcopy( (void *) (uintptr_t) bootClut, (void *) appleClut8, sizeof(appleClut8) );
 159     }
 160
 161     if (!norootInitialized) {
 162     default_noroot.width  = kFailedBootWidth;
 163     default_noroot.height = kFailedBootHeight;
 164     default_noroot.dx     = 0;
 165     default_noroot.dy     = kFailedBootOffset;
 166     default_noroot_data   = failedBootPict;
 167     }
 168
 169     /*
 170      * Initialize the panic UI
 171      */
 172     panic_ui_initialize( (unsigned char *) appleClut8 );
 173
 174     /*
 175      * Initialize the spinning wheel (progress indicator).
 176      */
 177     vc_progress_initialize( &default_progress, default_progress_data,
 178                             (unsigned char *) appleClut8 );
 179
 180     (void) StartIOKit( PE_state.deviceTreeHead, PE_state.bootArgs, gPEEFIRuntimeServices, 0);
 181 }
 182
 183 void PE_init_platform(boolean_t vm_initialized, void * _args)
 184 {
 185     boot_args *args = (boot_args *)_args;
 186
 187     if (PE_state.initialized == FALSE) {
 188             PE_state.initialized        = TRUE;
 189
 190         // New EFI-style
 191         PE_state.bootArgs           = _args;
 192         PE_state.deviceTreeHead     = args->deviceTreeP;
 193         PE_state.video.v_baseAddr   = args->Video.v_baseAddr;
 194         PE_state.video.v_rowBytes   = args->Video.v_rowBytes;
 195         PE_state.video.v_width      = args->Video.v_width;
 196         PE_state.video.v_height     = args->Video.v_height;
 197         PE_state.video.v_depth      = args->Video.v_depth;
 198         PE_state.video.v_display    = args->Video.v_display;
 199         strcpy( PE_state.video.v_pixelFormat, "PPPPPPPP");
 200     }
 201
 202     if (!vm_initialized) {
 203                 /* Hack! FIXME.. */
 204         outb(0x21, 0xff);   /* Maskout all interrupts Pic1 */
 205         outb(0xa1, 0xff);   /* Maskout all interrupts Pic2 */
 206
 207         if (PE_state.deviceTreeHead) {
 208             DTInit(PE_state.deviceTreeHead);
 209     }
 210
 211         pe_identify_machine(args);
 212     } else {
 213         DTEntry entry;
 214         void *ptr;
 215         uint32_t size;
 216
 217         pe_init_debug();
 218     }
 219 }
 220
 221 void PE_create_console( void )
 222 {
 223     if ( PE_state.video.v_display == GRAPHICS_MODE )
 224         PE_initialize_console( &PE_state.video, kPEGraphicsMode );
 225     else
 226         PE_initialize_console( &PE_state.video, kPETextMode );
 227 }
 228
 229 int PE_current_console( PE_Video * info )
 230 {
 231     *info = PE_state.video;
 232
 233     return (0);
 234 }
 235
 236 void PE_display_icon( __unused unsigned int flags, __unused const char * name )
 237 {
 238     if ( default_noroot_data )
 239         vc_display_icon( &default_noroot, default_noroot_data );
 240 }
 241
 242 extern boolean_t PE_get_hotkey( __unused unsigned char key )
 243 {
 244     return (FALSE);
 245 }
 246
 247 static timebase_callback_func gTimebaseCallback;
 248
 249 void PE_register_timebase_callback(timebase_callback_func callback)
 250 {
 251     gTimebaseCallback = callback;
 252
 253     PE_call_timebase_callback();
 254 }
 255
 256 void PE_call_timebase_callback(void)
 257 {
 258   struct timebase_freq_t timebase_freq;
 259   unsigned long          num, den, cnt;
 260
 261   num = gPEClockFrequencyInfo.bus_clock_rate_num * gPEClockFrequencyInfo.bus_to_dec_rate_num;
 262   den = gPEClockFrequencyInfo.bus_clock_rate_den * gPEClockFrequencyInfo.bus_to_dec_rate_den;
 263
 264   cnt = 2;
 265   while (cnt <= den) {
 266     if ((num % cnt) || (den % cnt)) {
 267       cnt++;
 268       continue;
 269     }
 270
 271     num /= cnt;
 272     den /= cnt;
 273   }
 274
 275   timebase_freq.timebase_num = num;
 276   timebase_freq.timebase_den = den;
 277
 278   if (gTimebaseCallback) gTimebaseCallback(&timebase_freq);
 279 }
 280
 281 /*
 282  * The default (non-functional) PE_poll_input handler.
 283  */
 284 static int
 285 PE_stub_poll_input(__unused unsigned int options, char * c)
 286 {
 287     *c = 0xff;
 288     return 1;  /* 0 for success, 1 for unsupported */
 289 }
 290
 291 /*
 292  * Called by the kernel debugger to poll for keyboard input.
 293  * Keyboard drivers may replace the default stub function
 294  * with their polled-mode input function.
 295  */
 296 int (*PE_poll_input)(unsigned int options, char * c)
 297         = PE_stub_poll_input;
 298
 299
 300