osfmk/ppc/FirmwareC.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  *      This file contains firmware code.
  30  *
  31  */
  32
  33 #include <debug.h>
  34 #include <mach_vm_debug.h>
  35 #include <db_machine_commands.h>
  36
  37 #include <kern/thread.h>
  38 #include <mach/vm_attributes.h>
  39 #include <mach/vm_param.h>
  40 #include <kern/spl.h>
  41
  42 #include <kern/misc_protos.h>
  43 #include <ppc/misc_protos.h>
  44 #include <ppc/proc_reg.h>
  45 #include <ppc/mem.h>
  46 #include <ppc/pmap.h>
  47 #include <ppc/new_screen.h>
  48 #include <ppc/Firmware.h>
  49 #include <ppc/mappings.h>
  50 #include <pexpert/pexpert.h>
  51 #include <ddb/db_output.h>
  52
  53 Boot_Video dgVideo;
  54 extern GDWorkArea GratefulDebWork[];
  55
  56 struct RuptCtr {                /* Counts hardware interrupts */
  57         struct GDpos {          /* Screen position for Grateful Deb display */
  58                 unsigned short col;     /* Column  (-1 means no display) */
  59                 unsigned short row;     /* Row */
  60         } GDpos;
  61         unsigned int count;     /* Count of interrupt */
  62         unsigned int timed;     /* If set, count updates at timed rate  */
  63         unsigned int lasttime;  /* Low of timebase when last updated */
  64 };
  65
  66 /* Window layout for Grateful Deb:
  67  *
  68  *      0                               9
  69  *
  70  *      0       Total                   Decrimenter
  71  *      1       DSI                             ISI
  72  *      2       System call             External
  73  *      3       SIGP                    Floating point
  74  *      4       Program                 Alignment
  75  */
  76
  77 struct RuptCtr RuptCtrs[96] = {
  78         {       /* Total interruptions */
  79                 .GDpos = {
  80                         .col = 0,
  81                         .row = 0,
  82                 },
  83                 .count = 0,
  84                 .timed = 1,
  85         },
  86         {       /* Reset */
  87                 .GDpos = {
  88                         .col = -1,
  89                         .row = -1,
  90                 },
  91                 .count = 0,
  92                 .timed = 0,
  93         },
  94         {       /* Machine check */
  95                 .GDpos = {
  96                         .col = -1,
  97                         .row = -1,
  98                 },
  99                 .count = 0,
 100                 .timed = 0,
 101         },
 102         {       /* DSIs */
 103                 .GDpos = {
 104                         .col = 0,
 105                         .row = 1,
 106                 },
 107                 .count = 0,
 108                 .timed = 1},
 109         {       /* ISIs */
 110                 .GDpos = {
 111                         .col = 1,
 112                         .row = 1,
 113                 },
 114                 .count = 0,
 115                 .timed = 1,
 116         },
 117         {       /* Externals */
 118                 .GDpos = {
 119                         .col = 1,
 120                         .row = 2,
 121                 },
 122                 .count = 0,
 123                 .timed = 1,
 124         },
 125         {       /* Alignment */
 126                 .GDpos = {
 127                         .col = 1,
 128                         .row = 4,
 129                 },
 130                 .count = 0,
 131                 .timed = 0,
 132         },
 133         {.GDpos = {.col = 0,.row = 4},.count = 0,.timed = 0},   /* Program */
 134         {.GDpos = {.col = 1,.row = 3},.count = 0,.timed = 0},   /* Floating point */
 135         {.GDpos = {.col = 1,.row = 0},.count = 0,.timed = 1},   /* Decrementer */
 136         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* I/O error */
 137         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 138         {.GDpos = {.col = 0,.row = 2},.count = 0,.timed = 1},   /* System call */
 139         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Trace */
 140         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Floating point assist */
 141         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Performance monitor */
 142         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* VMX */
 143         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 144         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 145         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 146         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Instruction breakpoint */
 147         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* System management */
 148         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 149         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 150         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 151         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 152         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 153         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 154         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 155         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 156         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 157         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 158         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 159         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Trace */
 160         {.GDpos = {.col = 0,.row = 3},.count = 0,.timed = 0},   /* SIGP */
 161         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Preemption */
 162         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Context switch */
 163         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 164         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 165         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 166         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 167         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 168         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 169         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 170         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 171         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 172         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 173         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Special, update frequency controls */
 174
 175         /*Start of second processor counts */
 176
 177         {.GDpos = {.col = 0,.row = 0},.count = 0,.timed = 1},   /* Total interruptions */
 178         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reset */
 179         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Machine check */
 180         {.GDpos = {.col = 0,.row = 1},.count = 0,.timed = 1},   /* DSIs */
 181         {.GDpos = {.col = 1,.row = 1},.count = 0,.timed = 1},   /* ISIs */
 182         {.GDpos = {.col = 1,.row = 2},.count = 0,.timed = 1},   /* Externals */
 183         {.GDpos = {.col = 1,.row = 4},.count = 0,.timed = 0},   /* Alignment */
 184         {.GDpos = {.col = 0,.row = 4},.count = 0,.timed = 0},   /* Program */
 185         {.GDpos = {.col = 1,.row = 3},.count = 0,.timed = 0},   /* Floating point */
 186         {.GDpos = {.col = 1,.row = 0},.count = 0,.timed = 1},   /* Decrementer */
 187         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* I/O error */
 188         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 189         {.GDpos = {.col = 0,.row = 2},.count = 0,.timed = 1},   /* System call */
 190         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Trace */
 191         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Floating point assist */
 192         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Performance monitor */
 193         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* VMX */
 194         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 195         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 196         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 197         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Instruction breakpoint */
 198         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* System management */
 199         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 200         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 201         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 202         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 203         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 204         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 205         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 206         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 207         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 208         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 209         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 210         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Trace */
 211         {.GDpos = {.col = 0,.row = 3},.count = 0,.timed = 0},   /* SIGP */
 212         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Preemption */
 213         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Context switch */
 214         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 215         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 216         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 217         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 218         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 219         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 220         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 221         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 222         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 223         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Reserved */
 224         {.GDpos = {.col = -1,.row = -1},.count = 0,.timed = 0}, /* Special, update frequency controls */
 225 };
 226
 227 void
 228 GratefulDebInit(bootBumbleC *boot_video_info)
 229 {                               /* Initialize the video debugger */
 230
 231         unsigned int fillframe[256];
 232         unsigned int startpos, startbyte, windowleft, newwidth, i, j, startword,
 233             oldwidth, nrmlgn;
 234         unsigned int nwords, *byteleft, lstlgn, pixlgn, bytelgn;
 235
 236         if (!boot_video_info) { /* Are we disabling it? */
 237                 GratefulDebWork[0].GDready = 0; /* Disable output */
 238                 return;
 239         }
 240
 241         nrmlgn = (9 * GDfontsize) * (boot_video_info->v_depth / 8);     /* Get the normal column size in bytes */
 242         lstlgn = (((8 * GDfontsize) + (GDfontsize >> 1)) * boot_video_info->v_depth) / 8;       /* Same as normal, but with 1/2 character space */
 243         nrmlgn = (nrmlgn + 31) & -32;   /* Round to a line */
 244
 245         bytelgn = (nrmlgn * (GDdispcols - 1)) + lstlgn; /* Length in bytes */
 246         pixlgn = bytelgn / (boot_video_info->v_depth / 8);      /* Number of pixels wide */
 247
 248         startbyte = (boot_video_info->v_width * (boot_video_info->v_depth / 8)) - bytelgn;      /* Get the starting byte unaligned */
 249         startpos = boot_video_info->v_width - pixlgn;   /* Starting pixel position */
 250
 251         startbyte += (unsigned int)boot_video_info->v_baseAddr & 31;    /* Add the extra to cache boundary in frame buffer */
 252         startbyte &= -32;       /* Make sure it's on a cache line for speed */
 253         startbyte += (unsigned int)boot_video_info->v_baseAddr & 31;    /* Subtract the extra to cache boundary in frame buffer */
 254
 255         windowleft = startbyte - (((GDfontsize / 2) * boot_video_info->v_depth) / 8);   /* Back up a half character */
 256         windowleft &= -4;       /* Make sure it is on a word boundary */
 257         newwidth = windowleft / (boot_video_info->v_depth / 8); /* Get the new pixel width of screen */
 258
 259         oldwidth = boot_video_info->v_width;    /* Save the old width */
 260 //      boot_video_info->v_width = newwidth;                                    /* Set the new width */
 261
 262         nwords = oldwidth - newwidth;   /* See how much to fill in pixels */
 263         nwords = nwords / (32 / boot_video_info->v_depth);      /* Get that in bytes */
 264
 265         startword = (newwidth + 3) / 4; /* Where does it start? */
 266
 267         byteleft = (unsigned int *)(boot_video_info->v_baseAddr + windowleft);  /* Starting place */
 268         for (i = 0; i < nwords; i++)
 269                 byteleft[i] = 0;        /* Set the row to all black */
 270
 271         byteleft = (unsigned int *)(boot_video_info->v_baseAddr + windowleft + (boot_video_info->v_rowBytes * 1));      /* Starting place */
 272         for (i = 0; i < nwords; i++)
 273                 byteleft[i] = 0;        /* Set the row to all black */
 274
 275         byteleft = (unsigned int *)(boot_video_info->v_baseAddr + windowleft + (boot_video_info->v_rowBytes * (boot_video_info->v_height - 2)));        /* Starting place */
 276         for (i = 0; i < nwords; i++)
 277                 byteleft[i] = 0;        /* Set the row to all black */
 278
 279         byteleft = (unsigned int *)(boot_video_info->v_baseAddr + windowleft + (boot_video_info->v_rowBytes * (boot_video_info->v_height - 1)));        /* Starting place */
 280         for (i = 0; i < nwords; i++)
 281                 byteleft[i] = 0;        /* Set the row to all black */
 282
 283         for (i = 0; i < nwords; i++)
 284                 fillframe[i] = 0xFFFFFFFF;      /* Set the row to all white */
 285
 286         if (boot_video_info->v_depth == 8) {    /* See if 8 bits a pixel */
 287                 fillframe[0] = 0x0000FFFF;      /* Make left border */
 288                 fillframe[nwords - 1] = 0xFFFF0000;     /* Make right border */
 289         } else if (boot_video_info->v_depth == 16) {    /* See if 16 bits a pixel */
 290                 fillframe[0] = 0x00000000;      /* Make left border */
 291                 fillframe[nwords - 1] = 0x00000000;     /* Make right border */
 292         } else {
 293                 fillframe[0] = 0x00000000;      /* Make left border */
 294                 fillframe[1] = 0x00000000;      /* Make left border */
 295                 fillframe[nwords - 1] = 0x00000000;     /* Make right border */
 296                 fillframe[nwords - 2] = 0x00000000;     /* Make right border */
 297         }
 298
 299         byteleft = (unsigned int *)(boot_video_info->v_baseAddr + windowleft + (boot_video_info->v_rowBytes * 2));      /* Place to start filling */
 300
 301         for (i = 2; i < (boot_video_info->v_height - 2); i++) { /* Fill the rest */
 302                 for (j = 0; j < nwords; j++)
 303                         byteleft[j] = fillframe[j];     /* Fill the row */
 304                 byteleft = (unsigned int *)((unsigned int)byteleft + boot_video_info->v_rowBytes);      /* Next row */
 305         }
 306
 307         for (i = 0; i < 2; i++) {       /* Initialize both (for now) processor areas */
 308
 309                 GratefulDebWork[i].GDtop =
 310                     2 + (GDfontsize / 2) + (i * 18 * GDfontsize);
 311                 GratefulDebWork[i].GDleft = 2 + startpos + (GDfontsize / 2);
 312                 GratefulDebWork[i].GDtopleft =
 313                     boot_video_info->v_baseAddr + startbyte +
 314                     (GratefulDebWork[i].GDtop * boot_video_info->v_rowBytes);
 315                 GratefulDebWork[i].GDrowbytes = boot_video_info->v_rowBytes;
 316                 GratefulDebWork[i].GDrowchar =
 317                     boot_video_info->v_rowBytes * (GDfontsize +
 318                                                    (GDfontsize / 4));
 319                 GratefulDebWork[i].GDdepth = boot_video_info->v_depth;
 320                 GratefulDebWork[i].GDcollgn = nrmlgn;
 321
 322 //              RuptCtrs[(48*i)+47].timed = gPEClockFrequencyInfo.timebase_frequency_hz >> 4;   /* (Update every 16th of a second (16 fps) */
 323                 RuptCtrs[(48 * i) + 47].timed = gPEClockFrequencyInfo.timebase_frequency_hz >> 3;       /* (Update every 8th of a second (8 fps) */
 324 //              RuptCtrs[(48*i)+47].timed = gPEClockFrequencyInfo.timebase_frequency_hz >> 2;   /* (Update every 4th of a second (4 fps) */
 325 //              RuptCtrs[(48*i)+47].timed = gPEClockFrequencyInfo.timebase_frequency_hz >> 1;   /* (Update every 2th of a second (2 fps) */
 326 //              RuptCtrs[(48*i)+47].timed = gPEClockFrequencyInfo.timebase_frequency_hz >> 0;   /* (Update every 1 second (1 fps) */
 327
 328                 sync();
 329
 330                 GratefulDebWork[i].GDready = 1; /* This one's all ready */
 331         }
 332 }
 333
 334 void debugNoop(void);
 335 void
 336 debugNoop(void)
 337 {                               /* This does absolutely nothing */
 338 }