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/chip.h", path);
 135         if ((stat(chip_h, &st) == -1) && (errno == ENOENT))
 136                 new_chip->chiph_exists = 0;
 137
 138         if (parent->latestchild) {
 139                 parent->latestchild->next_sibling = new_chip;
 140                 parent->latestchild->sibling = new_chip;
 141         }
 142         parent->latestchild = new_chip;
 143         if (!parent->children)
 144                 parent->children = new_chip;
 145         return new_chip;
 146 }
 147
 148 void add_header(struct device *dev) {
 149         if (dev->chiph_exists) {
 150                 int include_exists = 0;
 151                 struct header *h = &headers;
 152                 while (h->next) {
 153                         int result = strcmp(dev->name, h->next->name);
 154                         if (result == 0) {
 155                                 include_exists = 1;
 156                                 break;
 157                         }
 158                         if (result < 0) break;
 159                         h = h->next;
 160                 }
 161                 if (!include_exists) {
 162                         struct header *tmp = h->next;
 163                         h->next = malloc(sizeof(struct header));
 164                         memset(h->next, 0, sizeof(struct header));
 165                         h->next->name = dev->name;
 166                         h->next->next = tmp;
 167                 }
 168         }
 169 }
 170
 171 struct device *new_device(struct device *parent, struct device *busdev, const int bus, const char *devnum, int enabled) {
 172         struct device *new_d = new_dev(parent, busdev);
 173         new_d->bustype = bus;
 174
 175         char *tmp;
 176         new_d->path_a = strtol(strdup(devnum), &tmp, 16);
 177         if (*tmp == '.') {
 178                 tmp++;
 179                 new_d->path_b = strtol(tmp, NULL, 16);
 180         }
 181
 182         char *name = malloc(10);
 183         sprintf(name, "_dev%d", new_d->id);
 184         new_d->name = name;
 185         new_d->name_underscore = name; // shouldn't be necessary, but avoid 0-ptr
 186         new_d->type = device;
 187         new_d->enabled = enabled;
 188         new_d->chip = new_d->parent->chip;
 189
 190         if (parent->latestchild) {
 191                 parent->latestchild->next_sibling = new_d;
 192                 parent->latestchild->sibling = new_d;
 193         }
 194         parent->latestchild = new_d;
 195         if (!parent->children)
 196                 parent->children = new_d;
 197
 198         lastdev->nextdev = new_d;
 199         lastdev = new_d;
 200         if (bus == PCI) {
 201                 new_d->path = ".type=DEVICE_PATH_PCI,{.pci={ .devfn = PCI_DEVFN(0x%x,%d)}}";
 202         }
 203         if (bus == PNP) {
 204                 new_d->path = ".type=DEVICE_PATH_PNP,{.pnp={ .port = 0x%x, .device = 0x%x }}";
 205         }
 206         if (bus == I2C) {
 207                 new_d->path = ".type=DEVICE_PATH_I2C,{.i2c={ .device = 0x%x }}";
 208         }
 209         if (bus == APIC) {
 210                 new_d->path = ".type=DEVICE_PATH_APIC,{.apic={ .apic_id = 0x%x }}";
 211         }
 212         if (bus == APIC_CLUSTER) {
 213                 new_d->path = ".type=DEVICE_PATH_APIC_CLUSTER,{.apic_cluster={ .cluster = 0x%x }}";
 214         }
 215         if (bus == PCI_DOMAIN) {
 216                 new_d->path = ".type=DEVICE_PATH_PCI_DOMAIN,{.pci_domain={ .domain = 0x%x }}";
 217         }
 218         return new_d;
 219 }
 220
 221 void alias_siblings(struct device *d) {
 222         while (d) {
 223                 int link = 0;
 224                 struct device *cmp = d->next_sibling;
 225                 while (cmp && (cmp->bus == d->bus) && (cmp->path_a == d->path_a) && (cmp->path_b == d->path_b)) {
 226                         if (cmp->type==device && !cmp->used) {
 227                                 if (device_match(d, cmp)) {
 228                                         d->multidev = 1;
 229
 230                                         cmp->id = d->id;
 231                                         cmp->name = d->name;
 232                                         cmp->used = 1;
 233                                         cmp->link = ++link;
 234                                 }
 235                         }
 236                         cmp = cmp->next_sibling;
 237                 }
 238                 d = d->next_sibling;
 239         }
 240 }
 241
 242 void add_resource(struct device *dev, int type, int index, int base) {
 243         struct resource *r = malloc(sizeof(struct resource));
 244         memset (r, 0, sizeof(struct resource));
 245         r->type = type;
 246         r->index = index;
 247         r->base = base;
 248         if (dev->res) {
 249                 struct resource *head = dev->res;
 250                 while (head->next) head = head->next;
 251                 head->next = r;
 252         } else {
 253                 dev->res = r;
 254         }
 255         dev->rescnt++;
 256 }
 257
 258 void add_register(struct device *dev, char *name, char *val) {
 259         struct reg *r = malloc(sizeof(struct reg));
 260         memset (r, 0, sizeof(struct reg));
 261         r->key = name;
 262         r->value = val;
 263         if (dev->reg) {
 264                 struct reg *head = dev->reg;
 265                 // sorting to be equal to sconfig's behaviour
 266                 int sort = strcmp(r->key, head->key);
 267                 if (sort == 0) {
 268                         printf("ERROR: duplicate 'register' key.\n");
 269                         exit(1);
 270                 }
 271                 if (sort<0) {
 272                         r->next = head;
 273                         dev->reg = r;
 274                 } else {
 275                         while ((head->next) && (strcmp(head->next->key, r->key)<0)) head = head->next;
 276                         r->next = head->next;
 277                         head->next = r;
 278                 }
 279         } else {
 280                 dev->reg = r;
 281         }
 282 }
 283
 284 void add_pci_subsystem_ids(struct device *dev, int vendor, int device, int inherit)
 285 {
 286         if (dev->bustype != PCI && dev->bustype != PCI_DOMAIN) {
 287                 printf("ERROR: 'subsystem' only allowed for PCI devices\n");
 288                 exit(1);
 289         }
 290
 291         dev->subsystem_vendor = vendor;
 292         dev->subsystem_device = device;
 293         dev->inherit_subsystem = inherit;
 294 }
 295
 296 static void pass0(FILE *fil, struct device *ptr) {
 297         if (ptr->type == device && ptr->id == 0)
 298                 fprintf(fil, "struct bus %s_links[];\n", ptr->name);
 299         if ((ptr->type == device) && (ptr->id != 0) && (!ptr->used)) {
 300                 fprintf(fil, "static struct device %s;\n", ptr->name);
 301                 if (ptr->rescnt > 0)
 302                         fprintf(fil, "struct resource %s_res[];\n", ptr->name);
 303                 if (ptr->children || ptr->multidev)
 304                         fprintf(fil, "struct bus %s_links[];\n", ptr->name);
 305         }
 306 }
 307
 308 static void pass1(FILE *fil, struct device *ptr) {
 309         if (!ptr->used && (ptr->type == device)) {
 310                 if (ptr->id != 0)
 311                         fprintf(fil, "static ", ptr->name);
 312                 fprintf(fil, "struct device %s = {\n", ptr->name);
 313                 fprintf(fil, "\t.ops = %s,\n", (ptr->ops)?(ptr->ops):"0");
 314                 fprintf(fil, "\t.bus = &%s_links[%d],\n", ptr->bus->name, ptr->bus->link);
 315                 fprintf(fil, "\t.path = {");
 316                 fprintf(fil, ptr->path, ptr->path_a, ptr->path_b);
 317                 fprintf(fil, "},\n");
 318                 fprintf(fil, "\t.enabled = %d,\n", ptr->enabled);
 319                 fprintf(fil, "\t.on_mainboard = 1,\n");
 320                 if (ptr->subsystem_vendor > 0)
 321                         fprintf(fil, "\t.subsystem_vendor = 0x%04x,\n", ptr->subsystem_vendor);
 322
 323                 if (ptr->subsystem_device > 0)
 324                         fprintf(fil, "\t.subsystem_device = 0x%04x,\n", ptr->subsystem_device);
 325
 326                 if (ptr->rescnt > 0) {
 327                         fprintf(fil, "\t.resource_list = &%s_res[0],\n", ptr->name);
 328                 }
 329                 int link = 0;
 330                 if (ptr->children || ptr->multidev)
 331                         fprintf(fil, "\t.link_list = &%s_links[0],\n", ptr->name);
 332                 else
 333                         fprintf(fil, "\t.link_list = NULL,\n", ptr->name);
 334                 if (ptr->sibling)
 335                         fprintf(fil, "\t.sibling = &%s,\n", ptr->sibling->name);
 336                 if (ptr->chip->chiph_exists) {
 337                         fprintf(fil, "\t.chip_ops = &%s_ops,\n", ptr->chip->name_underscore);
 338                         fprintf(fil, "\t.chip_info = &%s_info_%d,\n", ptr->chip->name_underscore, ptr->chip->id);
 339                 }
 340                 if (ptr->nextdev)
 341                         fprintf(fil, "\t.next=&%s\n", ptr->nextdev->name);
 342                 fprintf(fil, "};\n");
 343         }
 344         if (ptr->rescnt > 0) {
 345                 int i=1;
 346                 fprintf(fil, "struct resource %s_res[] = {\n", ptr->name);
 347                 struct resource *r = ptr->res;
 348                 while (r) {
 349                         fprintf(fil, "\t\t{ .flags=IORESOURCE_FIXED | IORESOURCE_ASSIGNED | IORESOURCE_");
 350                         if (r->type == IRQ) fprintf(fil, "IRQ");
 351                         if (r->type == DRQ) fprintf(fil, "DRQ");
 352                         if (r->type == IO) fprintf(fil, "IO");
 353                         fprintf(fil, ", .index=0x%x, .base=0x%x,", r->index, r->base);
 354                         if (r->next)
 355                                 fprintf(fil, ".next=&%s_res[%d]},\n", ptr->name, i++);
 356                         else
 357                                 fprintf(fil, ".next=NULL },\n");
 358                         r = r->next;
 359                 }
 360                 fprintf(fil, "\t };\n");
 361         }
 362         if (!ptr->used && ptr->type == device && (ptr->children || ptr->multidev)) {
 363                 fprintf(fil, "struct bus %s_links[] = {\n", ptr->name);
 364                 if (ptr->multidev) {
 365                         struct device *d = ptr;
 366                         while (d) {
 367                                 if (device_match(d, ptr)) {
 368                                         fprintf(fil, "\t\t[%d] = {\n", d->link);
 369                                         fprintf(fil, "\t\t\t.link_num = %d,\n", d->link);
 370                                         fprintf(fil, "\t\t\t.dev = &%s,\n", d->name);
 371                                         if (d->children)
 372                                                 fprintf(fil, "\t\t\t.children = &%s,\n", d->children->name);
 373                                         if (d->next_sibling && device_match(d->next_sibling, ptr))
 374                                                 fprintf(fil, "\t\t\t.next=&%s_links[%d],\n", d->name, d->link+1);
 375                                         else
 376                                                 fprintf(fil, "\t\t\t.next = NULL,\n");
 377                                         fprintf(fil, "\t\t},\n");
 378                                 }
 379                                 d = d->next_sibling;
 380                         }
 381                 } else {
 382                         if (ptr->children) {
 383                                 fprintf(fil, "\t\t[0] = {\n");
 384                                 fprintf(fil, "\t\t\t.link_num = 0,\n");
 385                                 fprintf(fil, "\t\t\t.dev = &%s,\n", ptr->name);
 386                                 fprintf(fil, "\t\t\t.children = &%s,\n", ptr->children->name);
 387                                 fprintf(fil, "\t\t\t.next = NULL,\n");
 388                                 fprintf(fil, "\t\t},\n");
 389                         }
 390                 }
 391                 fprintf(fil, "\t};\n");
 392         }
 393         if ((ptr->type == chip) && (ptr->chiph_exists)) {
 394                 if (ptr->reg) {
 395                         fprintf(fil, "struct %s_config %s_info_%d\t= {\n", ptr->name_underscore, ptr->name_underscore, ptr->id);
 396                         struct reg *r = ptr->reg;
 397                         while (r) {
 398                                 fprintf(fil, "\t.%s = %s,\n", r->key, r->value);
 399                                 r = r->next;
 400                         }
 401                         fprintf(fil, "};\n\n");
 402                 } else {
 403                         fprintf(fil, "struct %s_config %s_info_%d;\n", ptr->name_underscore, ptr->name_underscore, ptr->id);
 404                 }
 405         }
 406 }
 407
 408 static void walk_device_tree(FILE *fil, struct device *ptr, void (*func)(FILE *, struct device*), struct device *chips) {
 409         do {
 410                 func(fil, ptr);
 411                 ptr = ptr->next_sibling;
 412         } while (ptr);
 413 }
 414
 415 static void inherit_subsystem_ids(FILE *file, struct device *dev)
 416 {
 417         struct device *p;
 418
 419         if (dev->subsystem_vendor != -1 && dev->subsystem_device != -1) {
 420                 /* user already gave us a subsystem vendor/device */
 421                 return;
 422         }
 423
 424         for(p = dev; p && p != p->parent; p = p->parent) {
 425
 426                 if (p->bustype != PCI && p->bustype != PCI_DOMAIN)
 427                         continue;
 428
 429                 if (p->inherit_subsystem) {
 430                         dev->subsystem_vendor = p->subsystem_vendor;
 431                         dev->subsystem_device = p->subsystem_device;
 432                         break;
 433                 }
 434         }
 435 }
 436
 437 int main(int argc, char** argv) {
 438         if (argc != 3) {
 439                 printf("usage: sconfig vendor/mainboard outputdir\n");
 440                 return 1;
 441         }
 442         char *mainboard=argv[1];
 443         char *outputdir=argv[2];
 444         char *devtree=malloc(strlen(mainboard)+30);
 445         char *outputc=malloc(strlen(outputdir)+10);
 446         sprintf(devtree, "src/mainboard/%s/devicetree.cb", mainboard);
 447         sprintf(outputc, "%s/static.c", outputdir);
 448
 449         headers.next = malloc(sizeof(struct header));
 450         headers.next->name = malloc(strlen(mainboard)+12);
 451         headers.next->next = 0;
 452         sprintf(headers.next->name, "mainboard/%s", mainboard);
 453
 454         FILE *filec = fopen(devtree, "r");
 455         if (!filec) {
 456                 fprintf(stderr, "Could not open file '%s' for reading: ", devtree);
 457                 perror(NULL);
 458                 exit(1);
 459         }
 460
 461         yyrestart(filec);
 462
 463         lastdev = head = &root;
 464
 465         yyparse();
 466
 467         fclose(filec);
 468
 469         if ((head->type == chip) && (!head->chiph_exists)) {
 470                 struct device *tmp = head;
 471                 head = &root;
 472                 while (head->next != tmp) head = head->next;
 473         }
 474
 475         FILE *staticc = fopen(outputc, "w");
 476         if (!staticc) {
 477                 fprintf(stderr, "Could not open file '%s' for writing: ", outputc);
 478                 perror(NULL);
 479                 exit(1);
 480         }
 481
 482         fprintf(staticc, "#include <device/device.h>\n");
 483         fprintf(staticc, "#include <device/pci.h>\n");
 484         struct header *h = &headers;
 485         while (h->next) {
 486                 h = h->next;
 487                 fprintf(staticc, "#include \"%s/chip.h\"\n", h->name);
 488         }
 489
 490         walk_device_tree(staticc, &root, inherit_subsystem_ids, NULL);
 491
 492         fprintf(staticc, "\n/* pass 0 */\n");
 493         walk_device_tree(staticc, &root, pass0, NULL);
 494         fprintf(staticc, "\n/* pass 1 */\nstruct mainboard_config mainboard_info_0;\nstruct device *last_dev = &%s;\n", lastdev->name);
 495         walk_device_tree(staticc, &root, pass1, NULL);
 496
 497         fclose(staticc);
 498
 499         return 0;
 500 }