Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/osfmk/ppc/FirmwareC.c
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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 * This file contains firmware code. 24 * 25 */ 26 27 #include <debug.h> 28 #include <mach_vm_debug.h> 29 #include <db_machine_commands.h> 30 31 #include <kern/thread.h> 32 #include <mach/vm_attributes.h> 33 #include <mach/vm_param.h> 34 #include <kern/spl.h> 35 36 #include <kern/misc_protos.h> 37 #include <ppc/misc_protos.h> 38 #include <ppc/proc_reg.h> 39 #include <ppc/mem.h> 40 #include <ppc/pmap.h> 41 #include <ppc/new_screen.h> 42 #include <ppc/Firmware.h> 43 #include <ppc/mappings.h> 44 #include <pexpert/pexpert.h> 45 #include <ddb/db_output.h> 46 47 extern Boot_Video boot_video_info; 48 Boot_Video dgVideo; 49 extern GDWorkArea GratefulDebWork[]; 50 51 typedef struct RuptCtr { /* Counts hardware interrupts */ 52 struct GDpos { /* Screen position for Grateful Deb display */ 53 unsigned short col; /* Column (-1 means no display) */ 54 unsigned short row; /* Row */ 55 } GDpos; 56 unsigned int count; /* Count of interrupt */ 57 unsigned int timed; /* If set, count updates at timed rate */ 58 unsigned int lasttime; /* Low of timebase when last updated */ 59 } RuptCtr; 60 61 /* Window layout for Grateful Deb: 62 * 63 * 0 9 64 * 65 * 0 Total Decrimenter 66 * 1 DSI ISI 67 * 2 System call External 68 * 3 SIGP Floating point 69 * 4 Program Alignment 70 */ 71 72 73 74 75 76 RuptCtr RuptCtrs[96] = { 77 { { 0, 0}, 0, 1 }, /* Total interruptions */ 78 { {-1, -1}, 0, 0 }, /* Reset */ 79 { {-1, -1}, 0, 0 }, /* Machine check */ 80 { { 0, 1}, 0, 1 }, /* DSIs */ 81 { { 1, 1}, 0, 1 }, /* ISIs */ 82 { { 1, 2}, 0, 1 }, /* Externals */ 83 { { 1, 4}, 0, 0 }, /* Alignment */ 84 { { 0, 4}, 0, 0 }, /* Program */ 85 { { 1, 3}, 0, 0 }, /* Floating point */ 86 { { 1, 0}, 0, 1 }, /* Decrementer */ 87 { {-1, -1}, 0, 0 }, /* I/O error */ 88 { {-1, -1}, 0, 0 }, /* Reserved */ 89 { { 0, 2}, 0, 1 }, /* System call */ 90 { {-1, -1}, 0, 0 }, /* Trace */ 91 { {-1, -1}, 0, 0 }, /* Floating point assist */ 92 { {-1, -1}, 0, 0 }, /* Performance monitor */ 93 { {-1, -1}, 0, 0 }, /* VMX */ 94 { {-1, -1}, 0, 0 }, /* Reserved */ 95 { {-1, -1}, 0, 0 }, /* Reserved */ 96 { {-1, -1}, 0, 0 }, /* Reserved */ 97 { {-1, -1}, 0, 0 }, /* Instruction breakpoint */ 98 { {-1, -1}, 0, 0 }, /* System management */ 99 { {-1, -1}, 0, 0 }, /* Reserved */ 100 { {-1, -1}, 0, 0 }, /* Reserved */ 101 { {-1, -1}, 0, 0 }, /* Reserved */ 102 { {-1, -1}, 0, 0 }, /* Reserved */ 103 { {-1, -1}, 0, 0 }, /* Reserved */ 104 { {-1, -1}, 0, 0 }, /* Reserved */ 105 { {-1, -1}, 0, 0 }, /* Reserved */ 106 { {-1, -1}, 0, 0 }, /* Reserved */ 107 { {-1, -1}, 0, 0 }, /* Reserved */ 108 { {-1, -1}, 0, 0 }, /* Reserved */ 109 { {-1, -1}, 0, 0 }, /* Reserved */ 110 { {-1, -1}, 0, 0 }, /* Trace */ 111 { { 0, 3}, 0, 0 }, /* SIGP */ 112 { {-1, -1}, 0, 0 }, /* Preemption */ 113 { {-1, -1}, 0, 0 }, /* Context switch */ 114 { {-1, -1}, 0, 0 }, /* Reserved */ 115 { {-1, -1}, 0, 0 }, /* Reserved */ 116 { {-1, -1}, 0, 0 }, /* Reserved */ 117 { {-1, -1}, 0, 0 }, /* Reserved */ 118 { {-1, -1}, 0, 0 }, /* Reserved */ 119 { {-1, -1}, 0, 0 }, /* Reserved */ 120 { {-1, -1}, 0, 0 }, /* Reserved */ 121 { {-1, -1}, 0, 0 }, /* Reserved */ 122 { {-1, -1}, 0, 0 }, /* Reserved */ 123 { {-1, -1}, 0, 0 }, /* Reserved */ 124 { {-1, -1}, 0, 0 }, /* Special, update frequency controls */ 125 126 /* Start of second processor counts */ 127 128 { { 0, 0}, 0, 1 }, /* Total interruptions */ 129 { {-1, -1}, 0, 0 }, /* Reset */ 130 { {-1, -1}, 0, 0 }, /* Machine check */ 131 { { 0, 1}, 0, 1 }, /* DSIs */ 132 { { 1, 1}, 0, 1 }, /* ISIs */ 133 { { 1, 2}, 0, 1 }, /* Externals */ 134 { { 1, 4}, 0, 0 }, /* Alignment */ 135 { { 0, 4}, 0, 0 }, /* Program */ 136 { { 1, 3}, 0, 0 }, /* Floating point */ 137 { { 1, 0}, 0, 1 }, /* Decrementer */ 138 { {-1, -1}, 0, 0 }, /* I/O error */ 139 { {-1, -1}, 0, 0 }, /* Reserved */ 140 { { 0, 2}, 0, 1 }, /* System call */ 141 { {-1, -1}, 0, 0 }, /* Trace */ 142 { {-1, -1}, 0, 0 }, /* Floating point assist */ 143 { {-1, -1}, 0, 0 }, /* Performance monitor */ 144 { {-1, -1}, 0, 0 }, /* VMX */ 145 { {-1, -1}, 0, 0 }, /* Reserved */ 146 { {-1, -1}, 0, 0 }, /* Reserved */ 147 { {-1, -1}, 0, 0 }, /* Reserved */ 148 { {-1, -1}, 0, 0 }, /* Instruction breakpoint */ 149 { {-1, -1}, 0, 0 }, /* System management */ 150 { {-1, -1}, 0, 0 }, /* Reserved */ 151 { {-1, -1}, 0, 0 }, /* Reserved */ 152 { {-1, -1}, 0, 0 }, /* Reserved */ 153 { {-1, -1}, 0, 0 }, /* Reserved */ 154 { {-1, -1}, 0, 0 }, /* Reserved */ 155 { {-1, -1}, 0, 0 }, /* Reserved */ 156 { {-1, -1}, 0, 0 }, /* Reserved */ 157 { {-1, -1}, 0, 0 }, /* Reserved */ 158 { {-1, -1}, 0, 0 }, /* Reserved */ 159 { {-1, -1}, 0, 0 }, /* Reserved */ 160 { {-1, -1}, 0, 0 }, /* Reserved */ 161 { {-1, -1}, 0, 0 }, /* Trace */ 162 { { 0, 3}, 0, 0 }, /* SIGP */ 163 { {-1, -1}, 0, 0 }, /* Preemption */ 164 { {-1, -1}, 0, 0 }, /* Context switch */ 165 { {-1, -1}, 0, 0 }, /* Reserved */ 166 { {-1, -1}, 0, 0 }, /* Reserved */ 167 { {-1, -1}, 0, 0 }, /* Reserved */ 168 { {-1, -1}, 0, 0 }, /* Reserved */ 169 { {-1, -1}, 0, 0 }, /* Reserved */ 170 { {-1, -1}, 0, 0 }, /* Reserved */ 171 { {-1, -1}, 0, 0 }, /* Reserved */ 172 { {-1, -1}, 0, 0 }, /* Reserved */ 173 { {-1, -1}, 0, 0 }, /* Reserved */ 174 { {-1, -1}, 0, 0 }, /* Reserved */ 175 { {-1, -1}, 0, 0 } /* Special, update frequency controls */ 176 }; 177 178 void GratefulDebInit(bootBumbleC *boot_video_info) { /* Initialize the video debugger */ 179 180 unsigned int fillframe[256]; 181 unsigned int startpos, startbyte, windowleft, newwidth, i, j, startword, oldwidth, nrmlgn; 182 unsigned int nwords, *byteleft, lstlgn, pixlgn, bytelgn; 183 184 if(!boot_video_info) { /* Are we disabling it? 185 GratefulDebWork[0].GDready = 0; /* Disable output */ 186 return; 187 } 188 189 nrmlgn = (9 * GDfontsize) * (boot_video_info->v_depth / 8); /* Get the normal column size in bytes */ 190 lstlgn = (((8 * GDfontsize) + (GDfontsize >> 1)) * boot_video_info->v_depth) / 8; /* Same as normal, but with 1/2 character space */ 191 nrmlgn = (nrmlgn + 31) & -32; /* Round to a line */ 192 193 bytelgn = (nrmlgn * (GDdispcols - 1)) + lstlgn; /* Length in bytes */ 194 pixlgn = bytelgn / (boot_video_info->v_depth / 8); /* Number of pixels wide */ 195 196 startbyte = (boot_video_info->v_width * (boot_video_info->v_depth / 8)) - bytelgn; /* Get the starting byte unaligned */ 197 startpos = boot_video_info->v_width - pixlgn; /* Starting pixel position */ 198 199 startbyte += (unsigned int)boot_video_info->v_baseAddr & 31; /* Add the extra to cache boundary in frame buffer */ 200 startbyte &= -32; /* Make sure it's on a cache line for speed */ 201 startbyte += (unsigned int)boot_video_info->v_baseAddr & 31; /* Subtract the extra to cache boundary in frame buffer */ 202 203 windowleft = startbyte - (((GDfontsize / 2) * boot_video_info->v_depth) / 8); /* Back up a half character */ 204 windowleft &= -4; /* Make sure it is on a word boundary */ 205 newwidth = windowleft / (boot_video_info->v_depth / 8); /* Get the new pixel width of screen */ 206 207 oldwidth = boot_video_info->v_width; /* Save the old width */ 208 // boot_video_info->v_width = newwidth; /* Set the new width */ 209 210 nwords = oldwidth - newwidth; /* See how much to fill in pixels */ 211 nwords = nwords / (32 / boot_video_info->v_depth); /* Get that in bytes */ 212 213 startword = (newwidth + 3) / 4; /* Where does it start? */ 214 215 216 byteleft = (unsigned int *)(boot_video_info->v_baseAddr + windowleft); /* Starting place */ 217 for (i=0; i < nwords; i++) byteleft[i] = 0; /* Set the row to all black */ 218 219 byteleft = (unsigned int *)(boot_video_info->v_baseAddr + windowleft + (boot_video_info->v_rowBytes * 1)); /* Starting place */ 220 for (i=0; i < nwords; i++) byteleft[i] = 0; /* Set the row to all black */ 221 222 byteleft = (unsigned int *)(boot_video_info->v_baseAddr + windowleft + 223 (boot_video_info->v_rowBytes * (boot_video_info->v_height - 2))); /* Starting place */ 224 for (i=0; i < nwords; i++) byteleft[i] = 0; /* Set the row to all black */ 225 226 byteleft = (unsigned int *)(boot_video_info->v_baseAddr + windowleft + 227 (boot_video_info->v_rowBytes * (boot_video_info->v_height - 1))); /* Starting place */ 228 for (i=0; i < nwords; i++) byteleft[i] = 0; /* Set the row to all black */ 229 230 for (i=0; i < nwords; i++) fillframe[i] = 0xFFFFFFFF; /* Set the row to all white */ 231 232 if(boot_video_info->v_depth == 8) { /* See if 8 bits a pixel */ 233 fillframe[0] = 0x0000FFFF; /* Make left border */ 234 fillframe[nwords - 1] = 0xFFFF0000; /* Make right border */ 235 } 236 else if(boot_video_info->v_depth == 16) { /* See if 16 bits a pixel */ 237 fillframe[0] = 0x00000000; /* Make left border */ 238 fillframe[nwords - 1] = 0x00000000; /* Make right border */ 239 } 240 else { 241 fillframe[0] = 0x00000000; /* Make left border */ 242 fillframe[1] = 0x00000000; /* Make left border */ 243 fillframe[nwords - 1] = 0x00000000; /* Make right border */ 244 fillframe[nwords - 2] = 0x00000000; /* Make right border */ 245 } 246 247 byteleft = (unsigned int *)(boot_video_info->v_baseAddr + windowleft + (boot_video_info->v_rowBytes * 2)); /* Place to start filling */ 248 249 for(i=2; i < (boot_video_info->v_height - 2); i++) { /* Fill the rest */ 250 for(j=0; j<nwords; j++) byteleft[j] = fillframe[j]; /* Fill the row */ 251 byteleft = (unsigned int *)((unsigned int)byteleft + boot_video_info->v_rowBytes); /* Next row */ 252 } 253 254 for(i=0; i<2; i++) { /* Initialize both (for now) processor areas */ 255 256 GratefulDebWork[i].GDtop = 2 + (GDfontsize / 2) + (i * 18 * GDfontsize); 257 GratefulDebWork[i].GDleft = 2 + startpos + (GDfontsize / 2); 258 GratefulDebWork[i].GDtopleft = boot_video_info->v_baseAddr + startbyte + 259 (GratefulDebWork[i].GDtop * boot_video_info->v_rowBytes); 260 GratefulDebWork[i].GDrowbytes = boot_video_info->v_rowBytes; 261 GratefulDebWork[i].GDrowchar = boot_video_info->v_rowBytes * (GDfontsize + (GDfontsize / 4)); 262 GratefulDebWork[i].GDdepth = boot_video_info->v_depth; 263 GratefulDebWork[i].GDcollgn = nrmlgn; 264 265 // RuptCtrs[(48*i)+47].timed = gPEClockFrequencyInfo.timebase_frequency_hz >> 4; /* (Update every 16th of a second (16 fps) */ 266 RuptCtrs[(48*i)+47].timed = gPEClockFrequencyInfo.timebase_frequency_hz >> 3; /* (Update every 8th of a second (8 fps) */ 267 // RuptCtrs[(48*i)+47].timed = gPEClockFrequencyInfo.timebase_frequency_hz >> 2; /* (Update every 4th of a second (4 fps) */ 268 // RuptCtrs[(48*i)+47].timed = gPEClockFrequencyInfo.timebase_frequency_hz >> 1; /* (Update every 2th of a second (2 fps) */ 269 // RuptCtrs[(48*i)+47].timed = gPEClockFrequencyInfo.timebase_frequency_hz >> 0; /* (Update every 1 second (1 fps) */ 270 271 sync(); 272 273 GratefulDebWork[i].GDready = 1; /* This one's all ready */ 274 } 275 276 } 277 278 void debugNoop(void); 279 void debugNoop(void) { /* This does absolutely nothing */ 280 return; 281 }
Cache object: b0991de19addea6b9103e210884992dd
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