util/sconfig/main.c

   1 /*
   2  * sconfig, coreboot device tree compiler
   3  *
   4  * Copyright (C) 2010 coresystems GmbH
   5  *                 written by Patrick Georgi <patrick.georgi@coresystems.de>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; version 2 of the License.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
  19  */
  20
  21 #include "sconfig.h"
  22 #include "sconfig.tab.h"
  23
  24 extern int linenum;
  25
  26 struct device *head, *lastdev;
  27
  28 struct header headers;
  29
  30 static int devcount = 0;
  31
  32 static struct device root;
  33 static struct device mainboard = {
  34         .name = "mainboard",
  35         .name_underscore = "mainboard",
  36         .id = 0,
  37         .chip = &mainboard,
  38         .type = chip,
  39         .chiph_exists = 1,
  40         .children = &root
  41 };
  42
  43 static struct device root = {
  44         .name = "dev_root",
  45         .name_underscore = "dev_root",
  46         .id = 0,
  47         .chip = &mainboard,
  48         .type = device,
  49         .path = " .type = DEVICE_PATH_ROOT ",
  50         .ops = "&default_dev_ops_root",
  51         .parent = &root,
  52         .bus = &root,
  53         .enabled = 1
  54 };
  55
  56 static struct device *new_dev(struct device *parent, struct device *bus) {
  57         struct device *dev = malloc(sizeof(struct device));
  58         memset(dev, 0, sizeof(struct device));
  59         dev->id = ++devcount;
  60         dev->parent = parent;
  61         dev->bus = bus;
  62         dev->subsystem_vendor = -1;
  63         dev->subsystem_device = -1;
  64         head->next = dev;
  65         head = dev;
  66         return dev;
  67 }
  68
  69 static int device_match(struct device *a, struct device *b) {
  70         if ((a->bustype == b->bustype) && (a->bus == b->bus) && (a->path_a == b->path_a) && (a->path_b == b->path_b))
  71                 return 1;
  72         return 0;
  73 }
  74
  75 void fold_in(struct device *parent) {
  76         struct device *child = parent->children;
  77         struct device *latest = 0;
  78         while (child != latest) {
  79                 if (child->children) {
  80                         if (!latest) latest = child->children;
  81                         parent->latestchild->next_sibling = child->children;
  82                         parent->latestchild = child->latestchild;
  83                 }
  84                 child = child->next_sibling;
  85         }
  86 }
  87
  88 int yywrap(void) {
  89         return 1;
  90 }
  91
  92 void yyerror (char const *str)
  93 {
  94         extern char *yytext;
  95         fprintf (stderr, "line %d: %s: %s\n", linenum + 1, yytext, str);
  96         exit(1);
  97 }
  98
  99 void postprocess_devtree(void) {
 100         root.next_sibling = root.children;
 101         root.next_sibling->next_sibling = root.next_sibling->children;
 102
 103         struct device *dev = &root;
 104         while (dev) {
 105                 /* skip "chip" elements in children chain */
 106                 while (dev->children && (dev->children->type == chip)) dev->children = dev->children->children;
 107                 /* skip "chip" elements and functions of the same device in sibling chain */
 108                 while (dev->sibling && dev->sibling->used) dev->sibling = dev->sibling->sibling;
 109                 /* If end of chain, and parent is a chip, move on */
 110                 if (!dev->sibling && (dev->parent->type == chip)) dev->sibling = dev->parent->sibling;
 111                 /* skip chips */
 112                 while (dev->sibling && dev->sibling->type == chip) dev->sibling = dev->sibling->children;
 113                 /* skip duplicate function elements in nextdev chain */
 114                 while (dev->nextdev && dev->nextdev->used) dev->nextdev = dev->nextdev->nextdev;
 115                 dev = dev->next_sibling;
 116         }
 117 }
 118
 119 struct device *new_chip(struct device *parent, struct device *bus, char *path) {
 120         struct device *new_chip = new_dev(parent, bus);
 121         new_chip->chiph_exists = 1;
 122         new_chip->name = path;
 123         new_chip->name_underscore = strdup(new_chip->name);
 124         char *c;
 125         for (c = new_chip->name_underscore; *c; c++) {
 126                 if (*c == '/') *c = '_';
 127                 if (*c == '-') *c = '_';
 128         }
 129         new_chip->type = chip;
 130         new_chip->chip = new_chip;
 131
 132         struct stat st;
 133         char *chip_h = malloc(strlen(path)+12);
 134         sprintf(chip_h, "src/%s", path);
 135         if ((stat(chip_h, &st) == -1) && (errno == ENOENT)) {
 136                 fprintf(stderr, "ERROR: Chip component %s does not exist.\n",
 137                                 path);
 138                 exit(1);
 139         }
 140
 141         sprintf(chip_h, "src/%s/chip.h", path);
 142         if ((stat(chip_h, &st) == -1) && (errno == ENOENT))
 143                 new_chip->chiph_exists = 0;
 144
 145         if (parent->latestchild) {
 146                 parent->latestchild->next_sibling = new_chip;
 147                 parent->latestchild->sibling = new_chip;
 148         }
 149         parent->latestchild = new_chip;
 150         if (!parent->children)
 151                 parent->children = new_chip;
 152         return new_chip;
 153 }
 154
 155 void add_header(struct device *dev) {
 156         if (dev->chiph_exists) {
 157                 int include_exists = 0;
 158                 struct header *h = &headers;
 159                 while (h->next) {
 160                         int result = strcmp(dev->name, h->next->name);
 161                         if (result == 0) {
 162                                 include_exists = 1;
 163                                 break;
 164                         }
 165                         if (result < 0) break;
 166                         h = h->next;
 167                 }
 168                 if (!include_exists) {
 169                         struct header *tmp = h->next;
 170                         h->next = malloc(sizeof(struct header));
 171                         memset(h->next, 0, sizeof(struct header));
 172                         h->next->name = dev->name;
 173                         h->next->next = tmp;
 174                 }
 175         }
 176 }
 177
 178 struct device *new_device(struct device *parent, struct device *busdev, const int bus, const char *devnum, int enabled) {
 179         struct device *new_d = new_dev(parent, busdev);
 180         new_d->bustype = bus;
 181
 182         char *tmp;
 183         new_d->path_a = strtol(strdup(devnum), &tmp, 16);
 184         if (*tmp == '.') {
 185                 tmp++;
 186                 new_d->path_b = strtol(tmp, NULL, 16);
 187         }
 188
 189         char *name = malloc(10);
 190         sprintf(name, "_dev%d", new_d->id);
 191         new_d->name = name;
 192         new_d->name_underscore = name; // shouldn't be necessary, but avoid 0-ptr
 193         new_d->type = device;
 194         new_d->enabled = enabled;
 195         new_d->chip = new_d->parent->chip;
 196
 197         if (parent->latestchild) {
 198                 parent->latestchild->next_sibling = new_d;
 199                 parent->latestchild->sibling = new_d;
 200         }
 201         parent->latestchild = new_d;
 202         if (!parent->children)
 203                 parent->children = new_d;
 204
 205         lastdev->nextdev = new_d;
 206         lastdev = new_d;
 207         if (bus == PCI) {
 208                 new_d->path = ".type=DEVICE_PATH_PCI,{.pci={ .devfn = PCI_DEVFN(0x%x,%d)}}";
 209         }
 210         if (bus == PNP) {
 211                 new_d->path = ".type=DEVICE_PATH_PNP,{.pnp={ .port = 0x%x, .device = 0x%x }}";
 212         }
 213         if (bus == I2C) {
 214                 new_d->path = ".type=DEVICE_PATH_I2C,{.i2c={ .device = 0x%x }}";
 215         }
 216         if (bus == APIC) {
 217                 new_d->path = ".type=DEVICE_PATH_APIC,{.apic={ .apic_id = 0x%x }}";
 218         }
 219         if (bus == APIC_CLUSTER) {
 220                 new_d->path = ".type=DEVICE_PATH_APIC_CLUSTER,{.apic_cluster={ .cluster = 0x%x }}";
 221         }
 222         if (bus == PCI_DOMAIN) {
 223                 new_d->path = ".type=DEVICE_PATH_PCI_DOMAIN,{.pci_domain={ .domain = 0x%x }}";
 224         }
 225         return new_d;
 226 }
 227
 228 void alias_siblings(struct device *d) {
 229         while (d) {
 230                 int link = 0;
 231                 struct device *cmp = d->next_sibling;
 232                 while (cmp && (cmp->bus == d->bus) && (cmp->path_a == d->path_a) && (cmp->path_b == d->path_b)) {
 233                         if (cmp->type==device && !cmp->used) {
 234                                 if (device_match(d, cmp)) {
 235                                         d->multidev = 1;
 236
 237                                         cmp->id = d->id;
 238                                         cmp->name = d->name;
 239                                         cmp->used = 1;
 240                                         cmp->link = ++link;
 241                                 }
 242                         }
 243                         cmp = cmp->next_sibling;
 244                 }
 245                 d = d->next_sibling;
 246         }
 247 }
 248
 249 void add_resource(struct device *dev, int type, int index, int base) {
 250         struct resource *r = malloc(sizeof(struct resource));
 251         memset (r, 0, sizeof(struct resource));
 252         r->type = type;
 253         r->index = index;
 254         r->base = base;
 255         if (dev->res) {
 256                 struct resource *head = dev->res;
 257                 while (head->next) head = head->next;
 258                 head->next = r;
 259         } else {
 260                 dev->res = r;
 261         }
 262         dev->rescnt++;
 263 }
 264
 265 void add_register(struct device *dev, char *name, char *val) {
 266         struct reg *r = malloc(sizeof(struct reg));
 267         memset (r, 0, sizeof(struct reg));
 268         r->key = name;
 269         r->value = val;
 270         if (dev->reg) {
 271                 struct reg *head = dev->reg;
 272                 // sorting to be equal to sconfig's behaviour
 273                 int sort = strcmp(r->key, head->key);
 274                 if (sort == 0) {
 275                         printf("ERROR: duplicate 'register' key.\n");
 276                         exit(1);
 277                 }
 278                 if (sort<0) {
 279                         r->next = head;
 280                         dev->reg = r;
 281                 } else {
 282                         while ((head->next) && (strcmp(head->next->key, r->key)<0)) head = head->next;
 283                         r->next = head->next;
 284                         head->next = r;
 285                 }
 286         } else {
 287                 dev->reg = r;
 288         }
 289 }
 290
 291 void add_pci_subsystem_ids(struct device *dev, int vendor, int device, int inherit)
 292 {
 293         if (dev->bustype != PCI && dev->bustype != PCI_DOMAIN) {
 294                 printf("ERROR: 'subsystem' only allowed for PCI devices\n");
 295                 exit(1);
 296         }
 297
 298         dev->subsystem_vendor = vendor;
 299         dev->subsystem_device = device;
 300         dev->inherit_subsystem = inherit;
 301 }
 302
 303 static void pass0(FILE *fil, struct device *ptr) {
 304         if (ptr->type == device && ptr->id == 0)
 305                 fprintf(fil, "struct bus %s_links[];\n", ptr->name);
 306         if ((ptr->type == device) && (ptr->id != 0) && (!ptr->used)) {
 307                 fprintf(fil, "static struct device %s;\n", ptr->name);
 308                 if (ptr->rescnt > 0)
 309                         fprintf(fil, "struct resource %s_res[];\n", ptr->name);
 310                 if (ptr->children || ptr->multidev)
 311                         fprintf(fil, "struct bus %s_links[];\n", ptr->name);
 312         }
 313 }
 314
 315 static void pass1(FILE *fil, struct device *ptr) {
 316         if (!ptr->used && (ptr->type == device)) {
 317                 if (ptr->id != 0)
 318                         fprintf(fil, "static ", ptr->name);
 319                 fprintf(fil, "struct device %s = {\n", ptr->name);
 320                 fprintf(fil, "\t.ops = %s,\n", (ptr->ops)?(ptr->ops):"0");
 321                 fprintf(fil, "\t.bus = &%s_links[%d],\n", ptr->bus->name, ptr->bus->link);
 322                 fprintf(fil, "\t.path = {");
 323                 fprintf(fil, ptr->path, ptr->path_a, ptr->path_b);
 324                 fprintf(fil, "},\n");
 325                 fprintf(fil, "\t.enabled = %d,\n", ptr->enabled);
 326                 fprintf(fil, "\t.on_mainboard = 1,\n");
 327                 if (ptr->subsystem_vendor > 0)
 328                         fprintf(fil, "\t.subsystem_vendor = 0x%04x,\n", ptr->subsystem_vendor);
 329
 330                 if (ptr->subsystem_device > 0)
 331                         fprintf(fil, "\t.subsystem_device = 0x%04x,\n", ptr->subsystem_device);
 332
 333                 if (ptr->rescnt > 0) {
 334                         fprintf(fil, "\t.resource_list = &%s_res[0],\n", ptr->name);
 335                 }
 336                 int link = 0;
 337                 if (ptr->children || ptr->multidev)
 338                         fprintf(fil, "\t.link_list = &%s_links[0],\n", ptr->name);
 339                 else
 340                         fprintf(fil, "\t.link_list = NULL,\n", ptr->name);
 341                 if (ptr->sibling)
 342                         fprintf(fil, "\t.sibling = &%s,\n", ptr->sibling->name);
 343                 if (ptr->chip->chiph_exists) {
 344                         fprintf(fil, "\t.chip_ops = &%s_ops,\n", ptr->chip->name_underscore);
 345                         fprintf(fil, "\t.chip_info = &%s_info_%d,\n", ptr->chip->name_underscore, ptr->chip->id);
 346                 }
 347                 if (ptr->nextdev)
 348                         fprintf(fil, "\t.next=&%s\n", ptr->nextdev->name);
 349                 fprintf(fil, "};\n");
 350         }
 351         if (ptr->rescnt > 0) {
 352                 int i=1;
 353                 fprintf(fil, "struct resource %s_res[] = {\n", ptr->name);
 354                 struct resource *r = ptr->res;
 355                 while (r) {
 356                         fprintf(fil, "\t\t{ .flags=IORESOURCE_FIXED | IORESOURCE_ASSIGNED | IORESOURCE_");
 357                         if (r->type == IRQ) fprintf(fil, "IRQ");
 358                         if (r->type == DRQ) fprintf(fil, "DRQ");
 359                         if (r->type == IO) fprintf(fil, "IO");
 360                         fprintf(fil, ", .index=0x%x, .base=0x%x,", r->index, r->base);
 361                         if (r->next)
 362                                 fprintf(fil, ".next=&%s_res[%d]},\n", ptr->name, i++);
 363                         else
 364                                 fprintf(fil, ".next=NULL },\n");
 365                         r = r->next;
 366                 }
 367                 fprintf(fil, "\t };\n");
 368         }
 369         if (!ptr->used && ptr->type == device && (ptr->children || ptr->multidev)) {
 370                 fprintf(fil, "struct bus %s_links[] = {\n", ptr->name);
 371                 if (ptr->multidev) {
 372                         struct device *d = ptr;
 373                         while (d) {
 374                                 if (device_match(d, ptr)) {
 375                                         fprintf(fil, "\t\t[%d] = {\n", d->link);
 376                                         fprintf(fil, "\t\t\t.link_num = %d,\n", d->link);
 377                                         fprintf(fil, "\t\t\t.dev = &%s,\n", d->name);
 378                                         if (d->children)
 379                                                 fprintf(fil, "\t\t\t.children = &%s,\n", d->children->name);
 380                                         if (d->next_sibling && device_match(d->next_sibling, ptr))
 381                                                 fprintf(fil, "\t\t\t.next=&%s_links[%d],\n", d->name, d->link+1);
 382                                         else
 383                                                 fprintf(fil, "\t\t\t.next = NULL,\n");
 384                                         fprintf(fil, "\t\t},\n");
 385                                 }
 386                                 d = d->next_sibling;
 387                         }
 388                 } else {
 389                         if (ptr->children) {
 390                                 fprintf(fil, "\t\t[0] = {\n");
 391                                 fprintf(fil, "\t\t\t.link_num = 0,\n");
 392                                 fprintf(fil, "\t\t\t.dev = &%s,\n", ptr->name);
 393                                 fprintf(fil, "\t\t\t.children = &%s,\n", ptr->children->name);
 394                                 fprintf(fil, "\t\t\t.next = NULL,\n");
 395                                 fprintf(fil, "\t\t},\n");
 396                         }
 397                 }
 398                 fprintf(fil, "\t};\n");
 399         }
 400         if ((ptr->type == chip) && (ptr->chiph_exists)) {
 401                 if (ptr->reg) {
 402                         fprintf(fil, "struct %s_config %s_info_%d\t= {\n", ptr->name_underscore, ptr->name_underscore, ptr->id);
 403                         struct reg *r = ptr->reg;
 404                         while (r) {
 405                                 fprintf(fil, "\t.%s = %s,\n", r->key, r->value);
 406                                 r = r->next;
 407                         }
 408                         fprintf(fil, "};\n\n");
 409                 } else {
 410                         fprintf(fil, "struct %s_config %s_info_%d;\n", ptr->name_underscore, ptr->name_underscore, ptr->id);
 411                 }
 412         }
 413 }
 414
 415 static void walk_device_tree(FILE *fil, struct device *ptr, void (*func)(FILE *, struct device*), struct device *chips) {
 416         do {
 417                 func(fil, ptr);
 418                 ptr = ptr->next_sibling;
 419         } while (ptr);
 420 }
 421
 422 static void inherit_subsystem_ids(FILE *file, struct device *dev)
 423 {
 424         struct device *p;
 425
 426         if (dev->subsystem_vendor != -1 && dev->subsystem_device != -1) {
 427                 /* user already gave us a subsystem vendor/device */
 428                 return;
 429         }
 430
 431         for(p = dev; p && p != p->parent; p = p->parent) {
 432
 433                 if (p->bustype != PCI && p->bustype != PCI_DOMAIN)
 434                         continue;
 435
 436                 if (p->inherit_subsystem) {
 437                         dev->subsystem_vendor = p->subsystem_vendor;
 438                         dev->subsystem_device = p->subsystem_device;
 439                         break;
 440                 }
 441         }
 442 }
 443
 444 int main(int argc, char** argv) {
 445         if (argc != 3) {
 446                 printf("usage: sconfig vendor/mainboard outputdir\n");
 447                 return 1;
 448         }
 449         char *mainboard=argv[1];
 450         char *outputdir=argv[2];
 451         char *devtree=malloc(strlen(mainboard)+30);
 452         char *outputc=malloc(strlen(outputdir)+10);
 453         sprintf(devtree, "src/mainboard/%s/devicetree.cb", mainboard);
 454         sprintf(outputc, "%s/static.c", outputdir);
 455
 456         headers.next = malloc(sizeof(struct header));
 457         headers.next->name = malloc(strlen(mainboard)+12);
 458         headers.next->next = 0;
 459         sprintf(headers.next->name, "mainboard/%s", mainboard);
 460
 461         FILE *filec = fopen(devtree, "r");
 462         if (!filec) {
 463                 fprintf(stderr, "Could not open file '%s' for reading: ", devtree);
 464                 perror(NULL);
 465                 exit(1);
 466         }
 467
 468         yyrestart(filec);
 469
 470         lastdev = head = &root;
 471
 472         yyparse();
 473
 474         fclose(filec);
 475
 476         if ((head->type == chip) && (!head->chiph_exists)) {
 477                 struct device *tmp = head;
 478                 head = &root;
 479                 while (head->next != tmp) head = head->next;
 480         }
 481
 482         FILE *staticc = fopen(outputc, "w");
 483         if (!staticc) {
 484                 fprintf(stderr, "Could not open file '%s' for writing: ", outputc);
 485                 perror(NULL);
 486                 exit(1);
 487         }
 488
 489         fprintf(staticc, "#include <device/device.h>\n");
 490         fprintf(staticc, "#include <device/pci.h>\n");
 491         struct header *h = &headers;
 492         while (h->next) {
 493                 h = h->next;
 494                 fprintf(staticc, "#include \"%s/chip.h\"\n", h->name);
 495         }
 496
 497         walk_device_tree(staticc, &root, inherit_subsystem_ids, NULL);
 498
 499         fprintf(staticc, "\n/* pass 0 */\n");
 500         walk_device_tree(staticc, &root, pass0, NULL);
 501         fprintf(staticc, "\n/* pass 1 */\nstruct mainboard_config mainboard_info_0;\nstruct device *last_dev = &%s;\n", lastdev->name);
 502         walk_device_tree(staticc, &root, pass1, NULL);
 503
 504         fclose(staticc);
 505
 506         return 0;
 507 }