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 struct device *head, *lastdev;
  25
  26 struct header headers;
  27
  28 static int devcount = 0;
  29
  30 static struct device root;
  31 static struct device mainboard = {
  32         .name = "mainboard",
  33         .name_underscore = "mainboard",
  34         .id = 0,
  35         .chip = &mainboard,
  36         .type = chip,
  37         .chiph_exists = 1,
  38         .children = &root
  39 };
  40
  41 static struct device root = {
  42         .name = "dev_root",
  43         .name_underscore = "dev_root",
  44         .id = 0,
  45         .chip = &mainboard,
  46         .type = device,
  47         .path = " .type = DEVICE_PATH_ROOT ",
  48         .ops = "&default_dev_ops_root",
  49         .parent = &root,
  50         .bus = &root,
  51         .enabled = 1
  52 };
  53
  54 static struct device *new_dev(struct device *parent, struct device *bus) {
  55         struct device *dev = malloc(sizeof(struct device));
  56         memset(dev, 0, sizeof(struct device));
  57         dev->id = ++devcount;
  58         dev->parent = parent;
  59         dev->bus = bus;
  60         head->next = dev;
  61         head = dev;
  62         return dev;
  63 }
  64
  65 static int device_match(struct device *a, struct device *b) {
  66         if ((a->bustype == b->bustype) && (a->bus == b->bus) && (a->path_a == b->path_a) && (a->path_b == b->path_b))
  67                 return 1;
  68         return 0;
  69 }
  70
  71 void fold_in(struct device *parent) {
  72         struct device *child = parent->children;
  73         struct device *latest = 0;
  74         while (child != latest) {
  75                 if (child->children) {
  76                         if (!latest) latest = child->children;
  77                         parent->latestchild->next_sibling = child->children;
  78                         parent->latestchild = child->latestchild;
  79                 }
  80                 child = child->next_sibling;
  81         }
  82 }
  83
  84 int yywrap(void) {
  85         return 1;
  86 }
  87
  88 void yyerror (char const *str)
  89 {
  90         fprintf (stderr, "%s\n", str);
  91 }
  92
  93 void postprocess_devtree(void) {
  94         root.next_sibling = root.children;
  95         root.next_sibling->next_sibling = root.next_sibling->children;
  96
  97         struct device *dev = &root;
  98         while (dev) {
  99                 /* skip "chip" elements in children chain */
 100                 while (dev->children && (dev->children->type == chip)) dev->children = dev->children->children;
 101                 /* skip "chip" elements and functions of the same device in sibling chain */
 102                 while (dev->sibling && dev->sibling->used) dev->sibling = dev->sibling->sibling;
 103                 /* If end of chain, and parent is a chip, move on */
 104                 if (!dev->sibling && (dev->parent->type == chip)) dev->sibling = dev->parent->sibling;
 105                 /* skip chips */
 106                 while (dev->sibling && dev->sibling->type == chip) dev->sibling = dev->sibling->children;
 107                 /* skip duplicate function elements in nextdev chain */
 108                 while (dev->nextdev && dev->nextdev->used) dev->nextdev = dev->nextdev->nextdev;
 109                 dev = dev->next_sibling;
 110         }
 111 }
 112
 113 struct device *new_chip(struct device *parent, struct device *bus, char *path) {
 114         struct device *new_chip = new_dev(parent, bus);
 115         new_chip->chiph_exists = 1;
 116         new_chip->name = path;
 117         new_chip->name_underscore = strdup(new_chip->name);
 118         char *c;
 119         for (c = new_chip->name_underscore; *c; c++) {
 120                 if (*c == '/') *c = '_';
 121                 if (*c == '-') *c = '_';
 122         }
 123         new_chip->type = chip;
 124         new_chip->chip = new_chip;
 125
 126         struct stat st;
 127         char *chip_h = malloc(strlen(path)+12);
 128         sprintf(chip_h, "src/%s/chip.h", path);
 129         if ((stat(chip_h, &st) == -1) && (errno == ENOENT))
 130                 new_chip->chiph_exists = 0;
 131
 132         if (parent->latestchild) {
 133                 parent->latestchild->next_sibling = new_chip;
 134                 parent->latestchild->sibling = new_chip;
 135         }
 136         parent->latestchild = new_chip;
 137         if (!parent->children)
 138                 parent->children = new_chip;
 139         return new_chip;
 140 }
 141
 142 void add_header(struct device *dev) {
 143         if (dev->chiph_exists) {
 144                 int include_exists = 0;
 145                 struct header *h = &headers;
 146                 while (h->next) {
 147                         int result = strcmp(dev->name, h->next->name);
 148                         if (result == 0) {
 149                                 include_exists = 1;
 150                                 break;
 151                         }
 152                         if (result < 0) break;
 153                         h = h->next;
 154                 }
 155                 if (!include_exists) {
 156                         struct header *tmp = h->next;
 157                         h->next = malloc(sizeof(struct header));
 158                         memset(h->next, 0, sizeof(struct header));
 159                         h->next->name = dev->name;
 160                         h->next->next = tmp;
 161                 }
 162         }
 163 }
 164
 165 struct device *new_device(struct device *parent, struct device *busdev, const int bus, const char *devnum, int enabled) {
 166         struct device *new_d = new_dev(parent, busdev);
 167         new_d->bustype = bus;
 168
 169         char *tmp;
 170         new_d->path_a = strtol(strdup(devnum), &tmp, 16);
 171         if (*tmp == '.') {
 172                 tmp++;
 173                 new_d->path_b = strtol(tmp, NULL, 16);
 174         }
 175
 176         char *name = malloc(10);
 177         sprintf(name, "_dev%d", new_d->id);
 178         new_d->name = name;
 179         new_d->name_underscore = name; // shouldn't be necessary, but avoid 0-ptr
 180         new_d->type = device;
 181         new_d->enabled = enabled;
 182         new_d->chip = new_d->parent->chip;
 183
 184         if (parent->latestchild) {
 185                 parent->latestchild->next_sibling = new_d;
 186                 parent->latestchild->sibling = new_d;
 187         }
 188         parent->latestchild = new_d;
 189         if (!parent->children)
 190                 parent->children = new_d;
 191
 192         lastdev->nextdev = new_d;
 193         lastdev = new_d;
 194         if (bus == PCI) {
 195                 new_d->path = ".type=DEVICE_PATH_PCI,{.pci={ .devfn = PCI_DEVFN(0x%x,%d)}}";
 196         }
 197         if (bus == PNP) {
 198                 new_d->path = ".type=DEVICE_PATH_PNP,{.pnp={ .port = 0x%x, .device = 0x%x }}";
 199         }
 200         if (bus == I2C) {
 201                 new_d->path = ".type=DEVICE_PATH_I2C,{.i2c={ .device = 0x%x }}";
 202         }
 203         if (bus == APIC) {
 204                 new_d->path = ".type=DEVICE_PATH_APIC,{.apic={ .apic_id = 0x%x }}";
 205         }
 206         if (bus == APIC_CLUSTER) {
 207                 new_d->path = ".type=DEVICE_PATH_APIC_CLUSTER,{.apic_cluster={ .cluster = 0x%x }}";
 208         }
 209         if (bus == PCI_DOMAIN) {
 210                 new_d->path = ".type=DEVICE_PATH_PCI_DOMAIN,{.pci_domain={ .domain = 0x%x }}";
 211         }
 212         return new_d;
 213 }
 214
 215 void alias_siblings(struct device *d) {
 216         while (d) {
 217                 int link = 0;
 218                 struct device *cmp = d->next_sibling;
 219                 while (cmp && (cmp->bus == d->bus) && (cmp->path_a == d->path_a) && (cmp->path_b == d->path_b)) {
 220                         if (cmp->type==device && !cmp->used) {
 221                                 if (device_match(d, cmp)) {
 222                                         d->multidev = 1;
 223
 224                                         cmp->aliased_name = malloc(12);
 225                                         sprintf(cmp->aliased_name, "_dev%d", cmp->id);
 226                                         cmp->id = d->id;
 227                                         cmp->name = d->name;
 228                                         cmp->used = 1;
 229                                         cmp->link = ++link;
 230                                 }
 231                         }
 232                         cmp = cmp->next_sibling;
 233                 }
 234                 d = d->next_sibling;
 235         }
 236 }
 237
 238 void add_resource(struct device *dev, int type, int index, int base) {
 239         struct resource *r = malloc(sizeof(struct resource));
 240         memset (r, 0, sizeof(struct resource));
 241         r->type = type;
 242         r->index = index;
 243         r->base = base;
 244         if (dev->res) {
 245                 struct resource *head = dev->res;
 246                 while (head->next) head = head->next;
 247                 head->next = r;
 248         } else {
 249                 dev->res = r;
 250         }
 251         dev->rescnt++;
 252 }
 253
 254 void add_register(struct device *dev, char *name, char *val) {
 255         struct reg *r = malloc(sizeof(struct reg));
 256         memset (r, 0, sizeof(struct reg));
 257         r->key = name;
 258         r->value = val;
 259         if (dev->reg) {
 260                 struct reg *head = dev->reg;
 261                 // sorting to be equal to sconfig's behaviour
 262                 int sort = strcmp(r->key, head->key);
 263                 if (sort == 0) {
 264                         printf("ERROR: duplicate 'register' key.\n");
 265                         exit(1);
 266                 }
 267                 if (sort<0) {
 268                         r->next = head;
 269                         dev->reg = r;
 270                 } else {
 271                         while ((head->next) && (strcmp(head->next->key, r->key)<0)) head = head->next;
 272                         r->next = head->next;
 273                         head->next = r;
 274                 }
 275         } else {
 276                 dev->reg = r;
 277         }
 278 }
 279
 280 static void pass0(FILE *fil, struct device *ptr) {
 281         if (ptr->type == device && ptr->id == 0)
 282                 fprintf(fil, "struct bus %s_links[];\n", ptr->name);
 283         if ((ptr->type == device) && (ptr->id != 0) && (!ptr->used)) {
 284                 fprintf(fil, "struct device %s;\n", ptr->name);
 285                 if (ptr->rescnt > 0)
 286                         fprintf(fil, "struct resource %s_res[];\n", ptr->name);
 287                 if (ptr->children || ptr->multidev)
 288                         fprintf(fil, "struct bus %s_links[];\n", ptr->name);
 289         }
 290         if ((ptr->type == device) && (ptr->id != 0) && ptr->used)
 291                 fprintf(fil, "struct device %s;\n", ptr->aliased_name);
 292 }
 293
 294 static void pass1(FILE *fil, struct device *ptr) {
 295         if (!ptr->used && (ptr->type == device)) {
 296                 fprintf(fil, "struct device %s = {\n", ptr->name);
 297                 fprintf(fil, "\t.ops = %s,\n", (ptr->ops)?(ptr->ops):"0");
 298                 fprintf(fil, "\t.bus = &%s_links[%d],\n", ptr->bus->name, ptr->bus->link);
 299                 fprintf(fil, "\t.path = {");
 300                 fprintf(fil, ptr->path, ptr->path_a, ptr->path_b);
 301                 fprintf(fil, "},\n");
 302                 fprintf(fil, "\t.enabled = %d,\n", ptr->enabled);
 303                 fprintf(fil, "\t.on_mainboard = 1,\n");
 304                 if (ptr->rescnt > 0) {
 305                         fprintf(fil, "\t.resource_list = &%s_res[0],\n", ptr->name);
 306                 }
 307                 int link = 0;
 308                 if (ptr->children || ptr->multidev)
 309                         fprintf(fil, "\t.link_list = &%s_links[0],\n", ptr->name);
 310                 else
 311                         fprintf(fil, "\t.link_list = NULL,\n", ptr->name);
 312                 if (ptr->sibling)
 313                         fprintf(fil, "\t.sibling = &%s,\n", ptr->sibling->name);
 314                 if (ptr->chip->chiph_exists) {
 315                         fprintf(fil, "\t.chip_ops = &%s_ops,\n", ptr->chip->name_underscore);
 316                         fprintf(fil, "\t.chip_info = &%s_info_%d,\n", ptr->chip->name_underscore, ptr->chip->id);
 317                 }
 318                 if (ptr->nextdev)
 319                         fprintf(fil, "\t.next=&%s\n", ptr->nextdev->name);
 320                 fprintf(fil, "};\n");
 321         }
 322         if (ptr->rescnt > 0) {
 323                 int i=1;
 324                 fprintf(fil, "struct resource %s_res[] = {\n", ptr->name);
 325                 struct resource *r = ptr->res;
 326                 while (r) {
 327                         fprintf(fil, "\t\t{ .flags=IORESOURCE_FIXED | IORESOURCE_ASSIGNED | IORESOURCE_");
 328                         if (r->type == IRQ) fprintf(fil, "IRQ");
 329                         if (r->type == DRQ) fprintf(fil, "DRQ");
 330                         if (r->type == IO) fprintf(fil, "IO");
 331                         fprintf(fil, ", .index=0x%x, .base=0x%x,", r->index, r->base);
 332                         if (r->next)
 333                                 fprintf(fil, ".next=&%s_res[%d]},\n", ptr->name, i++);
 334                         else
 335                                 fprintf(fil, ".next=NULL },\n");
 336                         r = r->next;
 337                 }
 338                 fprintf(fil, "\t };\n");
 339         }
 340         if (!ptr->used && ptr->type == device && (ptr->children || ptr->multidev)) {
 341                 fprintf(fil, "struct bus %s_links[] = {\n", ptr->name);
 342                 if (ptr->multidev) {
 343                         struct device *d = ptr;
 344                         while (d) {
 345                                 if (device_match(d, ptr)) {
 346                                         fprintf(fil, "\t\t[%d] = {\n", d->link);
 347                                         fprintf(fil, "\t\t\t.link_num = %d,\n", d->link);
 348                                         fprintf(fil, "\t\t\t.dev = &%s,\n", d->name);
 349                                         if (d->children)
 350                                                 fprintf(fil, "\t\t\t.children = &%s,\n", d->children->name);
 351                                         if (d->next_sibling && device_match(d->next_sibling, ptr))
 352                                                 fprintf(fil, "\t\t\t.next=&%s_links[%d],\n", d->name, d->link+1);
 353                                         else
 354                                                 fprintf(fil, "\t\t\t.next = NULL,\n");
 355                                         fprintf(fil, "\t\t},\n");
 356                                 }
 357                                 d = d->next_sibling;
 358                         }
 359                 } else {
 360                         if (ptr->children) {
 361                                 fprintf(fil, "\t\t[0] = {\n");
 362                                 fprintf(fil, "\t\t\t.link_num = 0,\n");
 363                                 fprintf(fil, "\t\t\t.dev = &%s,\n", ptr->name);
 364                                 fprintf(fil, "\t\t\t.children = &%s,\n", ptr->children->name);
 365                                 fprintf(fil, "\t\t\t.next = NULL,\n");
 366                                 fprintf(fil, "\t\t},\n");
 367                         }
 368                 }
 369                 fprintf(fil, "\t};\n");
 370         }
 371         if ((ptr->type == chip) && (ptr->chiph_exists)) {
 372                 if (ptr->reg) {
 373                         fprintf(fil, "struct %s_config %s_info_%d\t= {\n", ptr->name_underscore, ptr->name_underscore, ptr->id);
 374                         struct reg *r = ptr->reg;
 375                         while (r) {
 376                                 fprintf(fil, "\t.%s = %s,\n", r->key, r->value);
 377                                 r = r->next;
 378                         }
 379                         fprintf(fil, "};\n\n");
 380                 } else {
 381                         fprintf(fil, "struct %s_config %s_info_%d;\n", ptr->name_underscore, ptr->name_underscore, ptr->id);
 382                 }
 383         }
 384 }
 385
 386 static void walk_device_tree(FILE *fil, struct device *ptr, void (*func)(FILE *, struct device*), struct device *chips) {
 387         do {
 388                 func(fil, ptr);
 389                 ptr = ptr->next_sibling;
 390         } while (ptr);
 391 }
 392
 393 int main(int argc, char** argv) {
 394         if (argc != 3) {
 395                 printf("usage: sconfig vendor/mainboard outputdir\n");
 396                 return 1;
 397         }
 398         char *mainboard=argv[1];
 399         char *outputdir=argv[2];
 400         char *devtree=malloc(strlen(mainboard)+30);
 401         char *outputc=malloc(strlen(outputdir)+10);
 402         sprintf(devtree, "src/mainboard/%s/devicetree.cb", mainboard);
 403         sprintf(outputc, "%s/static.c", outputdir);
 404
 405         headers.next = malloc(sizeof(struct header));
 406         headers.next->name = malloc(strlen(mainboard)+12);
 407         headers.next->next = 0;
 408         sprintf(headers.next->name, "mainboard/%s", mainboard);
 409
 410         FILE *filec = fopen(devtree, "r");
 411         yyrestart(filec);
 412
 413         FILE *staticc = fopen(outputc, "w");
 414
 415         lastdev = head = &root;
 416         yyparse();
 417         fclose(filec);
 418
 419         if ((head->type == chip) && (!head->chiph_exists)) {
 420                 struct device *tmp = head;
 421                 head = &root;
 422                 while (head->next != tmp) head = head->next;
 423         }
 424
 425         fprintf(staticc, "#include <device/device.h>\n");
 426         fprintf(staticc, "#include <device/pci.h>\n");
 427         struct header *h = &headers;
 428         while (h->next) {
 429                 h = h->next;
 430                 fprintf(staticc, "#include \"%s/chip.h\"\n", h->name);
 431         }
 432         fprintf(staticc, "\n/* pass 0 */\n");
 433         walk_device_tree(staticc, &root, pass0, NULL);
 434         fprintf(staticc, "\n/* pass 1 */\nstruct mainboard_config mainboard_info_0;\nstruct device **last_dev_p = &%s.next;\n", lastdev->name);
 435         walk_device_tree(staticc, &root, pass1, NULL);
 436
 437         fclose(staticc);
 438         return 0;
 439 }