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         head->next = dev;
  63         head = dev;
  64         return dev;
  65 }
  66
  67 static int device_match(struct device *a, struct device *b) {
  68         if ((a->bustype == b->bustype) && (a->bus == b->bus) && (a->path_a == b->path_a) && (a->path_b == b->path_b))
  69                 return 1;
  70         return 0;
  71 }
  72
  73 void fold_in(struct device *parent) {
  74         struct device *child = parent->children;
  75         struct device *latest = 0;
  76         while (child != latest) {
  77                 if (child->children) {
  78                         if (!latest) latest = child->children;
  79                         parent->latestchild->next_sibling = child->children;
  80                         parent->latestchild = child->latestchild;
  81                 }
  82                 child = child->next_sibling;
  83         }
  84 }
  85
  86 int yywrap(void) {
  87         return 1;
  88 }
  89
  90 void yyerror (char const *str)
  91 {
  92         extern char *yytext;
  93         fprintf (stderr, "line %d: %s: %s\n", linenum + 1, yytext, str);
  94         exit(1);
  95 }
  96
  97 void postprocess_devtree(void) {
  98         root.next_sibling = root.children;
  99         root.next_sibling->next_sibling = root.next_sibling->children;
 100
 101         struct device *dev = &root;
 102         while (dev) {
 103                 /* skip "chip" elements in children chain */
 104                 while (dev->children && (dev->children->type == chip)) dev->children = dev->children->children;
 105                 /* skip "chip" elements and functions of the same device in sibling chain */
 106                 while (dev->sibling && dev->sibling->used) dev->sibling = dev->sibling->sibling;
 107                 /* If end of chain, and parent is a chip, move on */
 108                 if (!dev->sibling && (dev->parent->type == chip)) dev->sibling = dev->parent->sibling;
 109                 /* skip chips */
 110                 while (dev->sibling && dev->sibling->type == chip) dev->sibling = dev->sibling->children;
 111                 /* skip duplicate function elements in nextdev chain */
 112                 while (dev->nextdev && dev->nextdev->used) dev->nextdev = dev->nextdev->nextdev;
 113                 dev = dev->next_sibling;
 114         }
 115 }
 116
 117 struct device *new_chip(struct device *parent, struct device *bus, char *path) {
 118         struct device *new_chip = new_dev(parent, bus);
 119         new_chip->chiph_exists = 1;
 120         new_chip->name = path;
 121         new_chip->name_underscore = strdup(new_chip->name);
 122         char *c;
 123         for (c = new_chip->name_underscore; *c; c++) {
 124                 if (*c == '/') *c = '_';
 125                 if (*c == '-') *c = '_';
 126         }
 127         new_chip->type = chip;
 128         new_chip->chip = new_chip;
 129
 130         struct stat st;
 131         char *chip_h = malloc(strlen(path)+12);
 132         sprintf(chip_h, "src/%s/chip.h", path);
 133         if ((stat(chip_h, &st) == -1) && (errno == ENOENT))
 134                 new_chip->chiph_exists = 0;
 135
 136         if (parent->latestchild) {
 137                 parent->latestchild->next_sibling = new_chip;
 138                 parent->latestchild->sibling = new_chip;
 139         }
 140         parent->latestchild = new_chip;
 141         if (!parent->children)
 142                 parent->children = new_chip;
 143         return new_chip;
 144 }
 145
 146 void add_header(struct device *dev) {
 147         if (dev->chiph_exists) {
 148                 int include_exists = 0;
 149                 struct header *h = &headers;
 150                 while (h->next) {
 151                         int result = strcmp(dev->name, h->next->name);
 152                         if (result == 0) {
 153                                 include_exists = 1;
 154                                 break;
 155                         }
 156                         if (result < 0) break;
 157                         h = h->next;
 158                 }
 159                 if (!include_exists) {
 160                         struct header *tmp = h->next;
 161                         h->next = malloc(sizeof(struct header));
 162                         memset(h->next, 0, sizeof(struct header));
 163                         h->next->name = dev->name;
 164                         h->next->next = tmp;
 165                 }
 166         }
 167 }
 168
 169 struct device *new_device(struct device *parent, struct device *busdev, const int bus, const char *devnum, int enabled) {
 170         struct device *new_d = new_dev(parent, busdev);
 171         new_d->bustype = bus;
 172
 173         char *tmp;
 174         new_d->path_a = strtol(strdup(devnum), &tmp, 16);
 175         if (*tmp == '.') {
 176                 tmp++;
 177                 new_d->path_b = strtol(tmp, NULL, 16);
 178         }
 179
 180         char *name = malloc(10);
 181         sprintf(name, "_dev%d", new_d->id);
 182         new_d->name = name;
 183         new_d->name_underscore = name; // shouldn't be necessary, but avoid 0-ptr
 184         new_d->type = device;
 185         new_d->enabled = enabled;
 186         new_d->chip = new_d->parent->chip;
 187
 188         if (parent->latestchild) {
 189                 parent->latestchild->next_sibling = new_d;
 190                 parent->latestchild->sibling = new_d;
 191         }
 192         parent->latestchild = new_d;
 193         if (!parent->children)
 194                 parent->children = new_d;
 195
 196         lastdev->nextdev = new_d;
 197         lastdev = new_d;
 198         if (bus == PCI) {
 199                 new_d->path = ".type=DEVICE_PATH_PCI,{.pci={ .devfn = PCI_DEVFN(0x%x,%d)}}";
 200         }
 201         if (bus == PNP) {
 202                 new_d->path = ".type=DEVICE_PATH_PNP,{.pnp={ .port = 0x%x, .device = 0x%x }}";
 203         }
 204         if (bus == I2C) {
 205                 new_d->path = ".type=DEVICE_PATH_I2C,{.i2c={ .device = 0x%x }}";
 206         }
 207         if (bus == APIC) {
 208                 new_d->path = ".type=DEVICE_PATH_APIC,{.apic={ .apic_id = 0x%x }}";
 209         }
 210         if (bus == APIC_CLUSTER) {
 211                 new_d->path = ".type=DEVICE_PATH_APIC_CLUSTER,{.apic_cluster={ .cluster = 0x%x }}";
 212         }
 213         if (bus == PCI_DOMAIN) {
 214                 new_d->path = ".type=DEVICE_PATH_PCI_DOMAIN,{.pci_domain={ .domain = 0x%x }}";
 215         }
 216         return new_d;
 217 }
 218
 219 void alias_siblings(struct device *d) {
 220         while (d) {
 221                 int link = 0;
 222                 struct device *cmp = d->next_sibling;
 223                 while (cmp && (cmp->bus == d->bus) && (cmp->path_a == d->path_a) && (cmp->path_b == d->path_b)) {
 224                         if (cmp->type==device && !cmp->used) {
 225                                 if (device_match(d, cmp)) {
 226                                         d->multidev = 1;
 227
 228                                         cmp->id = d->id;
 229                                         cmp->name = d->name;
 230                                         cmp->used = 1;
 231                                         cmp->link = ++link;
 232                                 }
 233                         }
 234                         cmp = cmp->next_sibling;
 235                 }
 236                 d = d->next_sibling;
 237         }
 238 }
 239
 240 void add_resource(struct device *dev, int type, int index, int base) {
 241         struct resource *r = malloc(sizeof(struct resource));
 242         memset (r, 0, sizeof(struct resource));
 243         r->type = type;
 244         r->index = index;
 245         r->base = base;
 246         if (dev->res) {
 247                 struct resource *head = dev->res;
 248                 while (head->next) head = head->next;
 249                 head->next = r;
 250         } else {
 251                 dev->res = r;
 252         }
 253         dev->rescnt++;
 254 }
 255
 256 void add_register(struct device *dev, char *name, char *val) {
 257         struct reg *r = malloc(sizeof(struct reg));
 258         memset (r, 0, sizeof(struct reg));
 259         r->key = name;
 260         r->value = val;
 261         if (dev->reg) {
 262                 struct reg *head = dev->reg;
 263                 // sorting to be equal to sconfig's behaviour
 264                 int sort = strcmp(r->key, head->key);
 265                 if (sort == 0) {
 266                         printf("ERROR: duplicate 'register' key.\n");
 267                         exit(1);
 268                 }
 269                 if (sort<0) {
 270                         r->next = head;
 271                         dev->reg = r;
 272                 } else {
 273                         while ((head->next) && (strcmp(head->next->key, r->key)<0)) head = head->next;
 274                         r->next = head->next;
 275                         head->next = r;
 276                 }
 277         } else {
 278                 dev->reg = r;
 279         }
 280 }
 281
 282 static void pass0(FILE *fil, struct device *ptr) {
 283         if (ptr->type == device && ptr->id == 0)
 284                 fprintf(fil, "struct bus %s_links[];\n", ptr->name);
 285         if ((ptr->type == device) && (ptr->id != 0) && (!ptr->used)) {
 286                 fprintf(fil, "static struct device %s;\n", ptr->name);
 287                 if (ptr->rescnt > 0)
 288                         fprintf(fil, "struct resource %s_res[];\n", ptr->name);
 289                 if (ptr->children || ptr->multidev)
 290                         fprintf(fil, "struct bus %s_links[];\n", ptr->name);
 291         }
 292 }
 293
 294 static void pass1(FILE *fil, struct device *ptr) {
 295         if (!ptr->used && (ptr->type == device)) {
 296                 if (ptr->id != 0)
 297                         fprintf(fil, "static ", ptr->name);
 298                 fprintf(fil, "struct device %s = {\n", ptr->name);
 299                 fprintf(fil, "\t.ops = %s,\n", (ptr->ops)?(ptr->ops):"0");
 300                 fprintf(fil, "\t.bus = &%s_links[%d],\n", ptr->bus->name, ptr->bus->link);
 301                 fprintf(fil, "\t.path = {");
 302                 fprintf(fil, ptr->path, ptr->path_a, ptr->path_b);
 303                 fprintf(fil, "},\n");
 304                 fprintf(fil, "\t.enabled = %d,\n", ptr->enabled);
 305                 fprintf(fil, "\t.on_mainboard = 1,\n");
 306                 if (ptr->rescnt > 0) {
 307                         fprintf(fil, "\t.resource_list = &%s_res[0],\n", ptr->name);
 308                 }
 309                 int link = 0;
 310                 if (ptr->children || ptr->multidev)
 311                         fprintf(fil, "\t.link_list = &%s_links[0],\n", ptr->name);
 312                 else
 313                         fprintf(fil, "\t.link_list = NULL,\n", ptr->name);
 314                 if (ptr->sibling)
 315                         fprintf(fil, "\t.sibling = &%s,\n", ptr->sibling->name);
 316                 if (ptr->chip->chiph_exists) {
 317                         fprintf(fil, "\t.chip_ops = &%s_ops,\n", ptr->chip->name_underscore);
 318                         fprintf(fil, "\t.chip_info = &%s_info_%d,\n", ptr->chip->name_underscore, ptr->chip->id);
 319                 }
 320                 if (ptr->nextdev)
 321                         fprintf(fil, "\t.next=&%s\n", ptr->nextdev->name);
 322                 fprintf(fil, "};\n");
 323         }
 324         if (ptr->rescnt > 0) {
 325                 int i=1;
 326                 fprintf(fil, "struct resource %s_res[] = {\n", ptr->name);
 327                 struct resource *r = ptr->res;
 328                 while (r) {
 329                         fprintf(fil, "\t\t{ .flags=IORESOURCE_FIXED | IORESOURCE_ASSIGNED | IORESOURCE_");
 330                         if (r->type == IRQ) fprintf(fil, "IRQ");
 331                         if (r->type == DRQ) fprintf(fil, "DRQ");
 332                         if (r->type == IO) fprintf(fil, "IO");
 333                         fprintf(fil, ", .index=0x%x, .base=0x%x,", r->index, r->base);
 334                         if (r->next)
 335                                 fprintf(fil, ".next=&%s_res[%d]},\n", ptr->name, i++);
 336                         else
 337                                 fprintf(fil, ".next=NULL },\n");
 338                         r = r->next;
 339                 }
 340                 fprintf(fil, "\t };\n");
 341         }
 342         if (!ptr->used && ptr->type == device && (ptr->children || ptr->multidev)) {
 343                 fprintf(fil, "struct bus %s_links[] = {\n", ptr->name);
 344                 if (ptr->multidev) {
 345                         struct device *d = ptr;
 346                         while (d) {
 347                                 if (device_match(d, ptr)) {
 348                                         fprintf(fil, "\t\t[%d] = {\n", d->link);
 349                                         fprintf(fil, "\t\t\t.link_num = %d,\n", d->link);
 350                                         fprintf(fil, "\t\t\t.dev = &%s,\n", d->name);
 351                                         if (d->children)
 352                                                 fprintf(fil, "\t\t\t.children = &%s,\n", d->children->name);
 353                                         if (d->next_sibling && device_match(d->next_sibling, ptr))
 354                                                 fprintf(fil, "\t\t\t.next=&%s_links[%d],\n", d->name, d->link+1);
 355                                         else
 356                                                 fprintf(fil, "\t\t\t.next = NULL,\n");
 357                                         fprintf(fil, "\t\t},\n");
 358                                 }
 359                                 d = d->next_sibling;
 360                         }
 361                 } else {
 362                         if (ptr->children) {
 363                                 fprintf(fil, "\t\t[0] = {\n");
 364                                 fprintf(fil, "\t\t\t.link_num = 0,\n");
 365                                 fprintf(fil, "\t\t\t.dev = &%s,\n", ptr->name);
 366                                 fprintf(fil, "\t\t\t.children = &%s,\n", ptr->children->name);
 367                                 fprintf(fil, "\t\t\t.next = NULL,\n");
 368                                 fprintf(fil, "\t\t},\n");
 369                         }
 370                 }
 371                 fprintf(fil, "\t};\n");
 372         }
 373         if ((ptr->type == chip) && (ptr->chiph_exists)) {
 374                 if (ptr->reg) {
 375                         fprintf(fil, "struct %s_config %s_info_%d\t= {\n", ptr->name_underscore, ptr->name_underscore, ptr->id);
 376                         struct reg *r = ptr->reg;
 377                         while (r) {
 378                                 fprintf(fil, "\t.%s = %s,\n", r->key, r->value);
 379                                 r = r->next;
 380                         }
 381                         fprintf(fil, "};\n\n");
 382                 } else {
 383                         fprintf(fil, "struct %s_config %s_info_%d;\n", ptr->name_underscore, ptr->name_underscore, ptr->id);
 384                 }
 385         }
 386 }
 387
 388 static void walk_device_tree(FILE *fil, struct device *ptr, void (*func)(FILE *, struct device*), struct device *chips) {
 389         do {
 390                 func(fil, ptr);
 391                 ptr = ptr->next_sibling;
 392         } while (ptr);
 393 }
 394
 395 int main(int argc, char** argv) {
 396         if (argc != 3) {
 397                 printf("usage: sconfig vendor/mainboard outputdir\n");
 398                 return 1;
 399         }
 400         char *mainboard=argv[1];
 401         char *outputdir=argv[2];
 402         char *devtree=malloc(strlen(mainboard)+30);
 403         char *outputc=malloc(strlen(outputdir)+10);
 404         sprintf(devtree, "src/mainboard/%s/devicetree.cb", mainboard);
 405         sprintf(outputc, "%s/static.c", outputdir);
 406
 407         headers.next = malloc(sizeof(struct header));
 408         headers.next->name = malloc(strlen(mainboard)+12);
 409         headers.next->next = 0;
 410         sprintf(headers.next->name, "mainboard/%s", mainboard);
 411
 412         FILE *filec = fopen(devtree, "r");
 413         if (!filec) {
 414                 fprintf(stderr, "Could not open file '%s' for reading: ", devtree);
 415                 perror(NULL);
 416                 exit(1);
 417         }
 418
 419         yyrestart(filec);
 420
 421         lastdev = head = &root;
 422
 423         yyparse();
 424
 425         fclose(filec);
 426
 427         if ((head->type == chip) && (!head->chiph_exists)) {
 428                 struct device *tmp = head;
 429                 head = &root;
 430                 while (head->next != tmp) head = head->next;
 431         }
 432
 433         FILE *staticc = fopen(outputc, "w");
 434         if (!staticc) {
 435                 fprintf(stderr, "Could not open file '%s' for writing: ", outputc);
 436                 perror(NULL);
 437                 exit(1);
 438         }
 439
 440         fprintf(staticc, "#include <device/device.h>\n");
 441         fprintf(staticc, "#include <device/pci.h>\n");
 442         struct header *h = &headers;
 443         while (h->next) {
 444                 h = h->next;
 445                 fprintf(staticc, "#include \"%s/chip.h\"\n", h->name);
 446         }
 447         fprintf(staticc, "\n/* pass 0 */\n");
 448         walk_device_tree(staticc, &root, pass0, NULL);
 449         fprintf(staticc, "\n/* pass 1 */\nstruct mainboard_config mainboard_info_0;\nstruct device **last_dev_p = &%s.next;\n", lastdev->name);
 450         walk_device_tree(staticc, &root, pass1, NULL);
 451
 452         fclose(staticc);
 453
 454         return 0;
 455 }