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 * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved. 7 * 8 * This file contains Original Code and/or Modifications of Original Code 9 * as defined in and that are subject to the Apple Public Source License 10 * Version 2.0 (the 'License'). You may not use this file except in 11 * compliance with the License. Please obtain a copy of the License at 12 * http://www.opensource.apple.com/apsl/ and read it before using this 13 * file. 14 * 15 * The Original Code and all software distributed under the License are 16 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 17 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 18 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 20 * Please see the License for the specific language governing rights and 21 * limitations under the License. 22 * 23 * @APPLE_LICENSE_HEADER_END@ 24 */ 25 /* 26 * This file contains firmware code. 27 * 28 */ 29 30 #include <cpus.h> 31 #include <debug.h> 32 #include <mach_vm_debug.h> 33 #include <db_machine_commands.h> 34 35 #include <kern/thread.h> 36 #include <mach/vm_attributes.h> 37 #include <mach/vm_param.h> 38 #include <kern/spl.h> 39 40 #include <kern/misc_protos.h> 41 #include <ppc/misc_protos.h> 42 #include <ppc/proc_reg.h> 43 #include <ppc/mem.h> 44 #include <ppc/pmap.h> 45 #include <ppc/new_screen.h> 46 #include <ppc/Firmware.h> 47 #include <ppc/mappings.h> 48 #include <pexpert/pexpert.h> 49 #include <ddb/db_output.h> 50 51 extern Boot_Video boot_video_info; 52 Boot_Video dgVideo; 53 extern GDWorkArea GratefulDebWork[]; 54 55 typedef struct RuptCtr { /* Counts hardware interrupts */ 56 struct GDpos { /* Screen position for Grateful Deb display */ 57 unsigned short col; /* Column (-1 means no display) */ 58 unsigned short row; /* Row */ 59 } GDpos; 60 unsigned int count; /* Count of interrupt */ 61 unsigned int timed; /* If set, count updates at timed rate */ 62 unsigned int lasttime; /* Low of timebase when last updated */ 63 } RuptCtr; 64 65 /* Window layout for Grateful Deb: 66 * 67 * 0 9 68 * 69 * 0 Total Decrimenter 70 * 1 DSI ISI 71 * 2 System call External 72 * 3 SIGP Floating point 73 * 4 Program Alignment 74 */ 75 76 77 78 79 80 RuptCtr RuptCtrs[96] = { 81 { { 0, 0}, 0, 1 }, /* Total interruptions */ 82 { {-1, -1}, 0, 0 }, /* Reset */ 83 { {-1, -1}, 0, 0 }, /* Machine check */ 84 { { 0, 1}, 0, 1 }, /* DSIs */ 85 { { 1, 1}, 0, 1 }, /* ISIs */ 86 { { 1, 2}, 0, 1 }, /* Externals */ 87 { { 1, 4}, 0, 0 }, /* Alignment */ 88 { { 0, 4}, 0, 0 }, /* Program */ 89 { { 1, 3}, 0, 0 }, /* Floating point */ 90 { { 1, 0}, 0, 1 }, /* Decrementer */ 91 { {-1, -1}, 0, 0 }, /* I/O error */ 92 { {-1, -1}, 0, 0 }, /* Reserved */ 93 { { 0, 2}, 0, 1 }, /* System call */ 94 { {-1, -1}, 0, 0 }, /* Trace */ 95 { {-1, -1}, 0, 0 }, /* Floating point assist */ 96 { {-1, -1}, 0, 0 }, /* Performance monitor */ 97 { {-1, -1}, 0, 0 }, /* VMX */ 98 { {-1, -1}, 0, 0 }, /* Reserved */ 99 { {-1, -1}, 0, 0 }, /* Reserved */ 100 { {-1, -1}, 0, 0 }, /* Reserved */ 101 { {-1, -1}, 0, 0 }, /* Instruction breakpoint */ 102 { {-1, -1}, 0, 0 }, /* System management */ 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 }, /* Reserved */ 111 { {-1, -1}, 0, 0 }, /* Reserved */ 112 { {-1, -1}, 0, 0 }, /* Reserved */ 113 { {-1, -1}, 0, 0 }, /* Reserved */ 114 { {-1, -1}, 0, 0 }, /* Trace */ 115 { { 0, 3}, 0, 0 }, /* SIGP */ 116 { {-1, -1}, 0, 0 }, /* Preemption */ 117 { {-1, -1}, 0, 0 }, /* Context switch */ 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 }, /* Reserved */ 125 { {-1, -1}, 0, 0 }, /* Reserved */ 126 { {-1, -1}, 0, 0 }, /* Reserved */ 127 { {-1, -1}, 0, 0 }, /* Reserved */ 128 { {-1, -1}, 0, 0 }, /* Special, update frequency controls */ 129 130 /* Start of second processor counts */ 131 132 { { 0, 0}, 0, 1 }, /* Total interruptions */ 133 { {-1, -1}, 0, 0 }, /* Reset */ 134 { {-1, -1}, 0, 0 }, /* Machine check */ 135 { { 0, 1}, 0, 1 }, /* DSIs */ 136 { { 1, 1}, 0, 1 }, /* ISIs */ 137 { { 1, 2}, 0, 1 }, /* Externals */ 138 { { 1, 4}, 0, 0 }, /* Alignment */ 139 { { 0, 4}, 0, 0 }, /* Program */ 140 { { 1, 3}, 0, 0 }, /* Floating point */ 141 { { 1, 0}, 0, 1 }, /* Decrementer */ 142 { {-1, -1}, 0, 0 }, /* I/O error */ 143 { {-1, -1}, 0, 0 }, /* Reserved */ 144 { { 0, 2}, 0, 1 }, /* System call */ 145 { {-1, -1}, 0, 0 }, /* Trace */ 146 { {-1, -1}, 0, 0 }, /* Floating point assist */ 147 { {-1, -1}, 0, 0 }, /* Performance monitor */ 148 { {-1, -1}, 0, 0 }, /* VMX */ 149 { {-1, -1}, 0, 0 }, /* Reserved */ 150 { {-1, -1}, 0, 0 }, /* Reserved */ 151 { {-1, -1}, 0, 0 }, /* Reserved */ 152 { {-1, -1}, 0, 0 }, /* Instruction breakpoint */ 153 { {-1, -1}, 0, 0 }, /* System management */ 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 }, /* Reserved */ 162 { {-1, -1}, 0, 0 }, /* Reserved */ 163 { {-1, -1}, 0, 0 }, /* Reserved */ 164 { {-1, -1}, 0, 0 }, /* Reserved */ 165 { {-1, -1}, 0, 0 }, /* Trace */ 166 { { 0, 3}, 0, 0 }, /* SIGP */ 167 { {-1, -1}, 0, 0 }, /* Preemption */ 168 { {-1, -1}, 0, 0 }, /* Context switch */ 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 }, /* Reserved */ 176 { {-1, -1}, 0, 0 }, /* Reserved */ 177 { {-1, -1}, 0, 0 }, /* Reserved */ 178 { {-1, -1}, 0, 0 }, /* Reserved */ 179 { {-1, -1}, 0, 0 } /* Special, update frequency controls */ 180 }; 181 182 void GratefulDebInit(bootBumbleC *boot_video_info) { /* Initialize the video debugger */ 183 184 unsigned int fillframe[256]; 185 unsigned int startpos, startbyte, windowleft, newwidth, i, j, startword, oldwidth, nrmlgn; 186 unsigned int nwords, *byteleft, lstlgn, pixlgn, bytelgn; 187 188 if(!boot_video_info) { /* Are we disabling it? 189 GratefulDebWork[0].GDready = 0; /* Disable output */ 190 return; 191 } 192 193 nrmlgn = (9 * GDfontsize) * (boot_video_info->v_depth / 8); /* Get the normal column size in bytes */ 194 lstlgn = (((8 * GDfontsize) + (GDfontsize >> 1)) * boot_video_info->v_depth) / 8; /* Same as normal, but with 1/2 character space */ 195 nrmlgn = (nrmlgn + 31) & -32; /* Round to a line */ 196 197 bytelgn = (nrmlgn * (GDdispcols - 1)) + lstlgn; /* Length in bytes */ 198 pixlgn = bytelgn / (boot_video_info->v_depth / 8); /* Number of pixels wide */ 199 200 startbyte = (boot_video_info->v_width * (boot_video_info->v_depth / 8)) - bytelgn; /* Get the starting byte unaligned */ 201 startpos = boot_video_info->v_width - pixlgn; /* Starting pixel position */ 202 203 startbyte += (unsigned int)boot_video_info->v_baseAddr & 31; /* Add the extra to cache boundary in frame buffer */ 204 startbyte &= -32; /* Make sure it's on a cache line for speed */ 205 startbyte += (unsigned int)boot_video_info->v_baseAddr & 31; /* Subtract the extra to cache boundary in frame buffer */ 206 207 windowleft = startbyte - (((GDfontsize / 2) * boot_video_info->v_depth) / 8); /* Back up a half character */ 208 windowleft &= -4; /* Make sure it is on a word boundary */ 209 newwidth = windowleft / (boot_video_info->v_depth / 8); /* Get the new pixel width of screen */ 210 211 oldwidth = boot_video_info->v_width; /* Save the old width */ 212 // boot_video_info->v_width = newwidth; /* Set the new width */ 213 214 nwords = oldwidth - newwidth; /* See how much to fill in pixels */ 215 nwords = nwords / (32 / boot_video_info->v_depth); /* Get that in bytes */ 216 217 startword = (newwidth + 3) / 4; /* Where does it start? */ 218 219 220 byteleft = (unsigned int *)(boot_video_info->v_baseAddr + windowleft); /* Starting place */ 221 for (i=0; i < nwords; i++) byteleft[i] = 0; /* Set the row to all black */ 222 223 byteleft = (unsigned int *)(boot_video_info->v_baseAddr + windowleft + (boot_video_info->v_rowBytes * 1)); /* 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 - 2))); /* Starting place */ 228 for (i=0; i < nwords; i++) byteleft[i] = 0; /* Set the row to all black */ 229 230 byteleft = (unsigned int *)(boot_video_info->v_baseAddr + windowleft + 231 (boot_video_info->v_rowBytes * (boot_video_info->v_height - 1))); /* Starting place */ 232 for (i=0; i < nwords; i++) byteleft[i] = 0; /* Set the row to all black */ 233 234 for (i=0; i < nwords; i++) fillframe[i] = 0xFFFFFFFF; /* Set the row to all white */ 235 236 if(boot_video_info->v_depth == 8) { /* See if 8 bits a pixel */ 237 fillframe[0] = 0x0000FFFF; /* Make left border */ 238 fillframe[nwords - 1] = 0xFFFF0000; /* Make right border */ 239 } 240 else if(boot_video_info->v_depth == 16) { /* See if 16 bits a pixel */ 241 fillframe[0] = 0x00000000; /* Make left border */ 242 fillframe[nwords - 1] = 0x00000000; /* Make right border */ 243 } 244 else { 245 fillframe[0] = 0x00000000; /* Make left border */ 246 fillframe[1] = 0x00000000; /* Make left border */ 247 fillframe[nwords - 1] = 0x00000000; /* Make right border */ 248 fillframe[nwords - 2] = 0x00000000; /* Make right border */ 249 } 250 251 byteleft = (unsigned int *)(boot_video_info->v_baseAddr + windowleft + (boot_video_info->v_rowBytes * 2)); /* Place to start filling */ 252 253 for(i=2; i < (boot_video_info->v_height - 2); i++) { /* Fill the rest */ 254 for(j=0; j<nwords; j++) byteleft[j] = fillframe[j]; /* Fill the row */ 255 byteleft = (unsigned int *)((unsigned int)byteleft + boot_video_info->v_rowBytes); /* Next row */ 256 } 257 258 for(i=0; i<2; i++) { /* Initialize both (for now) processor areas */ 259 260 GratefulDebWork[i].GDtop = 2 + (GDfontsize / 2) + (i * 18 * GDfontsize); 261 GratefulDebWork[i].GDleft = 2 + startpos + (GDfontsize / 2); 262 GratefulDebWork[i].GDtopleft = boot_video_info->v_baseAddr + startbyte + 263 (GratefulDebWork[i].GDtop * boot_video_info->v_rowBytes); 264 GratefulDebWork[i].GDrowbytes = boot_video_info->v_rowBytes; 265 GratefulDebWork[i].GDrowchar = boot_video_info->v_rowBytes * (GDfontsize + (GDfontsize / 4)); 266 GratefulDebWork[i].GDdepth = boot_video_info->v_depth; 267 GratefulDebWork[i].GDcollgn = nrmlgn; 268 269 // RuptCtrs[(48*i)+47].timed = gPEClockFrequencyInfo.timebase_frequency_hz >> 4; /* (Update every 16th of a second (16 fps) */ 270 RuptCtrs[(48*i)+47].timed = gPEClockFrequencyInfo.timebase_frequency_hz >> 3; /* (Update every 8th of a second (8 fps) */ 271 // RuptCtrs[(48*i)+47].timed = gPEClockFrequencyInfo.timebase_frequency_hz >> 2; /* (Update every 4th of a second (4 fps) */ 272 // RuptCtrs[(48*i)+47].timed = gPEClockFrequencyInfo.timebase_frequency_hz >> 1; /* (Update every 2th of a second (2 fps) */ 273 // RuptCtrs[(48*i)+47].timed = gPEClockFrequencyInfo.timebase_frequency_hz >> 0; /* (Update every 1 second (1 fps) */ 274 275 sync(); 276 277 GratefulDebWork[i].GDready = 1; /* This one's all ready */ 278 } 279 280 } 281 282 void debugNoop(void); 283 void debugNoop(void) { /* This does absolutely nothing */ 284 return; 285 }
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