1 /* $NetBSD: prompatch.c,v 1.12 2005/12/11 12:19:08 christos Exp $ */ 2 3 /* 4 * Copyright (c) 2001 Valeriy E. Ushakov 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #include <sys/param.h> 31 #include <lib/libsa/stand.h> 32 #include <lib/libkern/libkern.h> 33 #include <machine/promlib.h> 34 35 36 void prom_patch(void); 37 38 static const char *match_c5ip(void); 39 40 41 /* 42 * Each patch entry is processed by: 43 * printf(message); prom_interpret(patch); printf("\n"); 44 */ 45 struct patch_entry { 46 const char *message; 47 const char *patch; 48 }; 49 50 51 /* 52 * PROM patches to apply to machine matching name/promvers. 53 */ 54 struct prom_patch { 55 const char *name; /* "name" of the root node */ 56 int promvers; /* prom_version() */ 57 const char *(*submatch)(void); /* Additional matches to test */ 58 const struct patch_entry *patches; /* The patches themselves */ 59 }; 60 61 62 /* 63 * Patches for JavaStation 1 with OBP 2.30. 64 * NB: its romvec is version 3, so this is PROM_OBP_V3. 65 */ 66 static const struct patch_entry patch_js1_obp[] = { 67 68 /* 69 * Can not remove a node, so just rename bogus /obio/zs so that it 70 * does not get matched. 71 */ 72 { "zs: renaming out of the way", 73 "\" /obio/zs@0,0\" find-device \" fakezs\" name" 74 " \" /obio/zs@0,100000\" find-device \" fakezs\" name " 75 " device-end" 76 }, 77 78 /* 79 * Give "su" (com port) "interrupts" property. 80 */ 81 { "su: adding \"interrupts\"", 82 "\" /obio/su\" find-device" 83 " d# 13 \" interrupts\" integer-attribute" 84 " device-end" 85 }, 86 87 /* 88 * Create a bare-bones "8042" (pckbc) node - just enough to attach it. 89 */ 90 { "8042: creating node", 91 "0 0 0 0 \" /obio\" begin-package" 92 " \" 8042\" name" 93 " 300060 0 8 reg" 94 " d# 13 \" interrupts\" integer-attribute" 95 " end-package" 96 }, 97 98 { NULL, NULL } 99 }; /* patch_js1_obp */ 100 101 102 /* 103 * Patches for JavaStation 1 with OpenFirmware. 104 * PROM in these machines is crippled in many ways. 105 */ 106 static const struct patch_entry patch_js1_ofw[] = { 107 108 /* 109 * JS1/OFW has no CPU node in the device tree. Create one to save us a 110 * _lot_ of headache in cpu.c and mainbus_attach. Mostly copied from 111 * OBP2. While clock-frequency is usually at the root node, add it 112 * here for brevity as kernel checks CPU node for this property anyway. 113 */ 114 { "cpu: creating node ", /* NB: space at the end is intentional */ 115 "0 0 0 0 \" /\" begin-package" 116 " \" FMI,MB86904\" device-name" /* NB: will print the name */ 117 " \" cpu\" device-type" 118 " 0 \" mid\" integer-property" 119 120 " 8 \" sparc-version\" integer-property" 121 " 4 \" version\" integer-property" 122 " 0 \" implementation\" integer-property" 123 " 4 \" psr-version\" integer-property" 124 " 0 \" psr-implementation\" integer-property" 125 126 " d# 100000000 \" clock-frequency\" integer-property" 127 128 " d# 4096 \" page-size\" integer-property" 129 " d# 256 \" mmu-nctx\" integer-property" 130 131 " 2 \" ncaches\" integer-property" 132 133 " d# 512 \" icache-nlines\" integer-property" 134 " d# 32 \" icache-line-size\" integer-property" 135 " 1 \" icache-associativity\" integer-property" 136 137 " d# 512 \" dcache-nlines\" integer-property" 138 " d# 16 \" dcache-line-size\" integer-property" 139 " 1 \" dcache-associativity\" integer-property" 140 141 " 0 0 \" cache-physical?\" property" 142 " 0 0 \" cache-coherence?\" property" 143 144 " end-package" 145 }, 146 147 /* 148 * mk48txx_attach needs a model name, spare clockattach from guesswork. 149 */ 150 { "eeprom: adding \"model\"", 151 "dev /obio/eeprom \" mk48t08\" model device-end" 152 }, 153 154 /* 155 * "interrupts" property is bogusly zero, delete it and let 156 * sbus_get_intr fallback to correct "intr" property. 157 */ 158 { "le: deleting bogus \"interrupts\"", 159 "dev /sbus/ledma/le \" interrupts\" delete-property device-end" 160 }, 161 162 /* 163 * Give "su" (com port) "interrupts" property. 164 */ 165 { "su: adding \"interrupts\"", 166 "dev /obio/su d# 13 \" interrupts\" integer-property device-end" 167 }, 168 169 /* 170 * Give "8042" (pckbc) "interrupts" property. 171 */ 172 { "8042: adding \"interrupts\"", 173 "dev /obio/8042 d# 13 \" interrupts\" integer-property device-end" 174 }, 175 176 { NULL, NULL } 177 }; /* patch_js1_ofw */ 178 179 180 /* 181 * Patches for Cycle 5 IP. 182 */ 183 static const struct patch_entry patch_c5ip[] = { 184 185 /* 186 * Can not remove a node, so just rename bogus /iommu/sbus/SUNW,CS4231 187 * so that it does not get matched. 188 */ 189 { "SUNW,CS4231: renaming out of the way", 190 "\" /iommu/sbus/SUNW,CS4231@3,c000000\" find-device \" fakeCS4231\" name" 191 " device-end" 192 }, 193 194 { NULL, NULL } 195 }; /* patch_c5ip */ 196 197 198 /* 199 * Patches for JavaStation NC, aka Krups. 200 */ 201 static const struct patch_entry patch_krups[] = { 202 203 /* 204 * Check if there's a node for the audio chip, if not create it. 205 */ 206 { "sound device node: ", 207 "\" /pci/ebus/sound\" ' find-device catch" 208 " 0= if" 209 " device-end" 210 " \" ok\"" 211 " else" 212 " 0 0 0 0 \" /pci/ebus\" begin-package" 213 " \" sound\" name" 214 " 200000 1 600 reg" 215 " end-package" 216 " \" created\"" 217 " then type" 218 }, 219 220 { NULL, NULL } 221 }; /* patch_krups */ 222 223 224 static const struct prom_patch prom_patch_tab[] = { 225 { "SUNW,JavaStation-1", PROM_OBP_V3, NULL, patch_js1_obp }, 226 { "SUNW,JDM1", PROM_OPENFIRM, NULL, patch_js1_ofw }, 227 { "SUNW,SPARCstation-5", PROM_OBP_V3, match_c5ip, patch_c5ip }, 228 { "SUNW,JSIIep", PROM_OPENFIRM, NULL, patch_krups }, 229 { NULL, 0, NULL } 230 }; 231 232 233 /* 234 * Additional match routine for Cycle 5 IP. 235 * This uses the SPARCstation 5 PROM almost unchanged, so we check the 236 * "banner-name" attribute of the root node. 237 */ 238 static const char * 239 match_c5ip(void) 240 { 241 if (strcmp(prom_getpropstring(prom_findroot(), "banner-name"), 242 "Cycle Computer Corporation") == 0) 243 return "Cycle 5 IP"; 244 245 return NULL; 246 } 247 248 249 /* 250 * Check if this machine needs tweaks to its PROM. It's simpler to fix 251 * the PROM than to invent workarounds in the kernel code. We do this 252 * patching in the secondary boot to avoid wasting space in the kernel. 253 */ 254 void 255 prom_patch(void) 256 { 257 char namebuf[32]; 258 char *propval; 259 const struct prom_patch *p; 260 261 if (prom_version() == PROM_OLDMON) 262 return; /* don't bother - no forth in this */ 263 264 propval = prom_getpropstringA(prom_findroot(), "name", 265 namebuf, sizeof(namebuf)); 266 if (propval == NULL) 267 return; 268 269 for (p = prom_patch_tab; p->name != NULL; ++p) { 270 if (p->promvers == prom_version() 271 && strcmp(p->name, namebuf) == 0) { 272 const struct patch_entry *e; 273 const char *promstr = "???"; 274 const char *submatch_info = NULL; 275 276 switch (prom_version()) { 277 case PROM_OBP_V0: 278 promstr = "OBP0"; 279 break; 280 case PROM_OBP_V2: 281 promstr = "OBP2"; 282 break; 283 case PROM_OBP_V3: 284 promstr = "OBP3"; 285 break; 286 case PROM_OPENFIRM: 287 promstr = "OFW"; 288 break; 289 } 290 291 292 if (p->submatch != NULL) { 293 submatch_info = (*p->submatch)(); 294 if (submatch_info == NULL) 295 continue; 296 } 297 298 if (submatch_info != NULL) 299 printf("Patching %s for %s (%s)\n", 300 promstr, p->name, submatch_info); 301 else 302 printf("Patching %s for %s\n", 303 promstr, p->name); 304 for (e = p->patches; e->message != NULL; ++e) { 305 printf("%s", e->message); 306 prom_interpret(e->patch); 307 printf("\n"); 308 } 309 return; 310 } 311 } 312 } 313