machdep.c revision 1.101
1 /* $NetBSD: machdep.c,v 1.101 2007/12/27 17:49:36 garbled Exp $ */ 2 /*- 3 * Copyright (c) 2007 The NetBSD Foundation, Inc. 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to The NetBSD Foundation 7 * by Tim Rightnour 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by the NetBSD 20 * Foundation, Inc. and its contributors. 21 * 4. Neither the name of The NetBSD Foundation nor the names of its 22 * contributors may be used to endorse or promote products derived 23 * from this software without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 26 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 #include <sys/cdefs.h> 39 __KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.101 2007/12/27 17:49:36 garbled Exp $"); 40 41 #include <sys/param.h> 42 #include <sys/buf.h> 43 #include <sys/boot_flag.h> 44 #include <sys/mount.h> 45 #include <sys/kernel.h> 46 47 #include <uvm/uvm_extern.h> 48 49 #include <dev/ofw/openfirm.h> 50 #include <dev/cons.h> 51 52 #include <machine/autoconf.h> 53 #include <machine/pmap.h> 54 #include <machine/powerpc.h> 55 #include <machine/trap.h> 56 #include <machine/bus.h> 57 #include <machine/isa_machdep.h> 58 #include <machine/spr.h> 59 60 #include <powerpc/oea/bat.h> 61 #include <powerpc/ofw_cons.h> 62 63 #include "com.h" 64 #if (NCOM > 0) 65 #include <sys/termios.h> 66 #include <dev/ic/comreg.h> 67 #include <dev/ic/comvar.h> 68 #endif 69 70 struct pmap ofw_pmap; 71 char bootpath[256]; 72 73 void ofwppc_batinit(void); 74 void ofppc_bootstrap_console(void); 75 76 extern u_int l2cr_config; 77 78 79 void 80 initppc(u_int startkernel, u_int endkernel, char *args) 81 { 82 ofwoea_initppc(startkernel, endkernel, args); 83 } 84 85 /* perform model-specific actions at initppc() */ 86 void 87 model_init(void) 88 { 89 int qhandle, phandle; 90 91 /* Pegasos1, Pegasos2 */ 92 if (strncmp(model_name, "Pegasos", 7) == 0) { 93 static uint16_t modew[] = { 640, 800, 1024, 1280, 0 }; 94 static uint16_t modeh[] = { 480, 600, 768, 1024, 0 }; 95 uint32_t width, height, mode, fbaddr; 96 char buf[32]; 97 int i; 98 99 /* the pegasos doesn't bother to set the L2 cache up*/ 100 l2cr_config = L2CR_L2PE; 101 102 /* fix the device_type property of a graphics card */ 103 for (qhandle = OF_peer(0); qhandle; qhandle = phandle) { 104 if (OF_getprop(qhandle, "name", buf, sizeof buf) > 0 105 && strncmp(buf, "display", 7) == 0) { 106 OF_setprop(qhandle, "device_type", "display", 8); 107 break; 108 } 109 if ((phandle = OF_child(qhandle))) 110 continue; 111 while (qhandle) { 112 if ((phandle = OF_peer(qhandle))) 113 break; 114 qhandle = OF_parent(qhandle); 115 } 116 } 117 118 /* 119 * Get screen width/height and switch to framebuffer mode. 120 * The default dimensions are: 800 x 600 121 */ 122 OF_interpret("screen-width", 0, 1, &width); 123 if (width == 0) 124 width = 800; 125 126 OF_interpret("screen-height", 0, 1, &height); 127 if (height == 0) 128 height = 600; 129 130 /* find VESA mode */ 131 for (i = 0, mode = 0; modew[i] != 0; i++) { 132 if (modew[i] == width && modeh[i] == height) { 133 mode = 0x101 + 2 * i; 134 break; 135 } 136 } 137 if (!mode) { 138 mode = 0x102; 139 width = 800; 140 height = 600; 141 } 142 143 /* init frame buffer mode */ 144 sprintf(buf, "%x vesa-set-mode", mode); 145 OF_interpret(buf, 0, 0); 146 147 /* set dimensions and frame buffer address in OFW */ 148 sprintf(buf, "%x to screen-width", width); 149 OF_interpret(buf, 0, 0); 150 sprintf(buf, "%x to screen-height", height); 151 OF_interpret(buf, 0, 0); 152 OF_interpret("vesa-frame-buffer-adr", 0, 1, &fbaddr); 153 if (fbaddr != 0) { 154 sprintf(buf, "%x to frame-buffer-adr", fbaddr); 155 OF_interpret(buf, 0, 0); 156 } 157 } 158 } 159 160 void 161 cpu_startup(void) 162 { 163 oea_startup(model_name[0] ? model_name : NULL); 164 } 165 166 167 void 168 consinit(void) 169 { 170 ofwoea_consinit(); 171 } 172 173 174 void 175 dumpsys(void) 176 { 177 aprint_normal("dumpsys: TBD\n"); 178 } 179 180 /* 181 * Halt or reboot the machine after syncing/dumping according to howto. 182 */ 183 void rtas_reboot(void); 184 185 void 186 cpu_reboot(int howto, char *what) 187 { 188 static int syncing; 189 static char str[256]; 190 char *ap = str, *ap1 = ap; 191 192 boothowto = howto; 193 if (!cold && !(howto & RB_NOSYNC) && !syncing) { 194 syncing = 1; 195 vfs_shutdown(); /* sync */ 196 resettodr(); /* set wall clock */ 197 } 198 splhigh(); 199 if (howto & RB_HALT) { 200 doshutdownhooks(); 201 aprint_normal("halted\n\n"); 202 ppc_exit(); 203 } 204 if (!cold && (howto & RB_DUMP)) 205 oea_dumpsys(); 206 doshutdownhooks(); 207 aprint_normal("rebooting\n\n"); 208 209 rtas_reboot(); 210 for(;;); 211 212 if (what && *what) { 213 if (strlen(what) > sizeof str - 5) 214 aprint_normal("boot string too large, ignored\n"); 215 else { 216 strcpy(str, what); 217 ap1 = ap = str + strlen(str); 218 *ap++ = ' '; 219 } 220 } 221 *ap++ = '-'; 222 if (howto & RB_SINGLE) 223 *ap++ = 's'; 224 if (howto & RB_KDB) 225 *ap++ = 'd'; 226 *ap++ = 0; 227 if (ap[-2] == '-') 228 *ap1 = 0; 229 ppc_boot(str); 230 } 231 232 /* 233 */ 234 235 #define divrnd(n, q) (((n)*2/(q)+1)/2) 236 237 void 238 ofppc_init_comcons(int isa_node) 239 { 240 #if (NCOM > 0) 241 char name[64]; 242 uint32_t reg[2], comfreq; 243 uint8_t dll, dlm; 244 int speed, rate, err, com_node, child; 245 246 /* if we have a serial cons, we have work to do */ 247 memset(name, 0, sizeof(name)); 248 OF_getprop(console_node, "device_type", name, sizeof(name)); 249 if (strcmp(name, "serial") != 0) 250 return; 251 252 /* scan ISA children for serial devices to match our console */ 253 com_node = -1; 254 for (child = OF_child(isa_node); child; child = OF_peer(child)) { 255 memset(name, 0, sizeof(name)); 256 OF_getprop(child, "device_type", name, sizeof(name)); 257 if (strcmp(name, "serial") == 0) { 258 /* 259 * Serial device even matches our console_node? 260 * Then we're done! 261 */ 262 if (child == console_node) { 263 com_node = child; 264 break; 265 } 266 /* remember first serial device found */ 267 if (com_node == -1) 268 com_node = child; 269 } 270 } 271 272 if (com_node == -1) 273 return; 274 275 if (OF_getprop(com_node, "reg", reg, sizeof(reg)) == -1) 276 return; 277 278 if (OF_getprop(com_node, "clock-frequency", &comfreq, 4) == -1) 279 comfreq = 0; 280 281 if (comfreq == 0) 282 comfreq = COM_FREQ; 283 284 isa_outb(reg[1] + com_cfcr, LCR_DLAB); 285 dll = isa_inb(reg[1] + com_dlbl); 286 dlm = isa_inb(reg[1] + com_dlbh); 287 rate = dll | (dlm << 8); 288 isa_outb(reg[1] + com_cfcr, LCR_8BITS); 289 speed = divrnd((comfreq / 16), rate); 290 err = speed - (speed + 150)/300 * 300; 291 speed -= err; 292 if (err < 0) 293 err = -err; 294 if (err > 50) 295 speed = 9600; 296 297 /* Now we can attach the comcons */ 298 aprint_verbose("Switching to COM console at speed %d", speed); 299 if (comcnattach(&genppc_isa_io_space_tag, reg[1], 300 speed, comfreq, COM_TYPE_NORMAL, 301 ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8))) 302 panic("Can't init serial console"); 303 aprint_verbose("\n"); 304 #endif /*NCOM*/ 305 } 306 307 void 308 copy_disp_props(struct device *dev, int node, prop_dictionary_t dict) 309 { 310 uint32_t temp; 311 char typestr[32]; 312 313 memset(typestr, 0, sizeof(typestr)); 314 OF_getprop(console_node, "device_type", typestr, sizeof(typestr)); 315 if (strcmp(typestr, "serial") != 0) { 316 /* this is our console, when we don't have a serial console */ 317 prop_dictionary_set_bool(dict, "is_console", 1); 318 } 319 320 if (!of_to_uint32_prop(dict, node, "width", "width")) { 321 322 OF_interpret("screen-width", 0, 1, &temp); 323 prop_dictionary_set_uint32(dict, "width", temp); 324 } 325 if (!of_to_uint32_prop(dict, node, "height", "height")) { 326 327 OF_interpret("screen-height", 0, 1, &temp); 328 prop_dictionary_set_uint32(dict, "height", temp); 329 } 330 of_to_uint32_prop(dict, node, "linebytes", "linebytes"); 331 if (!of_to_uint32_prop(dict, node, "depth", "depth")) { 332 /* 333 * XXX we should check linebytes vs. width but those 334 * FBs that don't have a depth property ( /chaos/control... ) 335 * won't have linebytes either 336 */ 337 prop_dictionary_set_uint32(dict, "depth", 8); 338 } 339 if (!of_to_uint32_prop(dict, node, "address", "address")) { 340 uint32_t fbaddr = 0; 341 OF_interpret("frame-buffer-adr", 0, 1, &fbaddr); 342 if (fbaddr != 0) 343 prop_dictionary_set_uint32(dict, "address", fbaddr); 344 } 345 } 346
Indexes created Fri Oct 03 17:10:05 GMT 2025