2 * sconfig, coreboot device tree compiler
4 * Copyright (C) 2010 coresystems GmbH
5 * written by Patrick Georgi <patrick.georgi@coresystems.de>
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.
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.
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
22 #include "sconfig.tab.h"
26 struct device *head, *lastdev;
28 struct header headers;
30 static int devcount = 0;
32 static struct device root;
33 static struct device mainboard = {
35 .name_underscore = "mainboard",
43 static struct device root = {
45 .name_underscore = "dev_root",
49 .path = " .type = DEVICE_PATH_ROOT ",
50 .ops = "&default_dev_ops_root",
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));
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))
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;
82 child = child->next_sibling;
90 void yyerror (char const *str)
92 fprintf (stderr, "line %d: %s\n", linenum, str);
95 void postprocess_devtree(void) {
96 root.next_sibling = root.children;
97 root.next_sibling->next_sibling = root.next_sibling->children;
99 struct device *dev = &root;
101 /* skip "chip" elements in children chain */
102 while (dev->children && (dev->children->type == chip)) dev->children = dev->children->children;
103 /* skip "chip" elements and functions of the same device in sibling chain */
104 while (dev->sibling && dev->sibling->used) dev->sibling = dev->sibling->sibling;
105 /* If end of chain, and parent is a chip, move on */
106 if (!dev->sibling && (dev->parent->type == chip)) dev->sibling = dev->parent->sibling;
108 while (dev->sibling && dev->sibling->type == chip) dev->sibling = dev->sibling->children;
109 /* skip duplicate function elements in nextdev chain */
110 while (dev->nextdev && dev->nextdev->used) dev->nextdev = dev->nextdev->nextdev;
111 dev = dev->next_sibling;
115 struct device *new_chip(struct device *parent, struct device *bus, char *path) {
116 struct device *new_chip = new_dev(parent, bus);
117 new_chip->chiph_exists = 1;
118 new_chip->name = path;
119 new_chip->name_underscore = strdup(new_chip->name);
121 for (c = new_chip->name_underscore; *c; c++) {
122 if (*c == '/') *c = '_';
123 if (*c == '-') *c = '_';
125 new_chip->type = chip;
126 new_chip->chip = new_chip;
129 char *chip_h = malloc(strlen(path)+12);
130 sprintf(chip_h, "src/%s/chip.h", path);
131 if ((stat(chip_h, &st) == -1) && (errno == ENOENT))
132 new_chip->chiph_exists = 0;
134 if (parent->latestchild) {
135 parent->latestchild->next_sibling = new_chip;
136 parent->latestchild->sibling = new_chip;
138 parent->latestchild = new_chip;
139 if (!parent->children)
140 parent->children = new_chip;
144 void add_header(struct device *dev) {
145 if (dev->chiph_exists) {
146 int include_exists = 0;
147 struct header *h = &headers;
149 int result = strcmp(dev->name, h->next->name);
154 if (result < 0) break;
157 if (!include_exists) {
158 struct header *tmp = h->next;
159 h->next = malloc(sizeof(struct header));
160 memset(h->next, 0, sizeof(struct header));
161 h->next->name = dev->name;
167 struct device *new_device(struct device *parent, struct device *busdev, const int bus, const char *devnum, int enabled) {
168 struct device *new_d = new_dev(parent, busdev);
169 new_d->bustype = bus;
172 new_d->path_a = strtol(strdup(devnum), &tmp, 16);
175 new_d->path_b = strtol(tmp, NULL, 16);
178 char *name = malloc(10);
179 sprintf(name, "_dev%d", new_d->id);
181 new_d->name_underscore = name; // shouldn't be necessary, but avoid 0-ptr
182 new_d->type = device;
183 new_d->enabled = enabled;
184 new_d->chip = new_d->parent->chip;
186 if (parent->latestchild) {
187 parent->latestchild->next_sibling = new_d;
188 parent->latestchild->sibling = new_d;
190 parent->latestchild = new_d;
191 if (!parent->children)
192 parent->children = new_d;
194 lastdev->nextdev = new_d;
197 new_d->path = ".type=DEVICE_PATH_PCI,{.pci={ .devfn = PCI_DEVFN(0x%x,%d)}}";
200 new_d->path = ".type=DEVICE_PATH_PNP,{.pnp={ .port = 0x%x, .device = 0x%x }}";
203 new_d->path = ".type=DEVICE_PATH_I2C,{.i2c={ .device = 0x%x }}";
206 new_d->path = ".type=DEVICE_PATH_APIC,{.apic={ .apic_id = 0x%x }}";
208 if (bus == APIC_CLUSTER) {
209 new_d->path = ".type=DEVICE_PATH_APIC_CLUSTER,{.apic_cluster={ .cluster = 0x%x }}";
211 if (bus == PCI_DOMAIN) {
212 new_d->path = ".type=DEVICE_PATH_PCI_DOMAIN,{.pci_domain={ .domain = 0x%x }}";
217 void alias_siblings(struct device *d) {
220 struct device *cmp = d->next_sibling;
221 while (cmp && (cmp->bus == d->bus) && (cmp->path_a == d->path_a) && (cmp->path_b == d->path_b)) {
222 if (cmp->type==device && !cmp->used) {
223 if (device_match(d, cmp)) {
226 cmp->aliased_name = malloc(12);
227 sprintf(cmp->aliased_name, "_dev%d", cmp->id);
234 cmp = cmp->next_sibling;
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));
247 struct resource *head = dev->res;
248 while (head->next) head = head->next;
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));
262 struct reg *head = dev->reg;
263 // sorting to be equal to sconfig's behaviour
264 int sort = strcmp(r->key, head->key);
266 printf("ERROR: duplicate 'register' key.\n");
273 while ((head->next) && (strcmp(head->next->key, r->key)<0)) head = head->next;
274 r->next = head->next;
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, "struct device %s;\n", ptr->name);
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);
292 if ((ptr->type == device) && (ptr->id != 0) && ptr->used)
293 fprintf(fil, "struct device %s;\n", ptr->aliased_name);
296 static void pass1(FILE *fil, struct device *ptr) {
297 if (!ptr->used && (ptr->type == device)) {
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);
310 if (ptr->children || ptr->multidev)
311 fprintf(fil, "\t.link_list = &%s_links[0],\n", ptr->name);
313 fprintf(fil, "\t.link_list = NULL,\n", ptr->name);
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);
321 fprintf(fil, "\t.next=&%s\n", ptr->nextdev->name);
322 fprintf(fil, "};\n");
324 if (ptr->rescnt > 0) {
326 fprintf(fil, "struct resource %s_res[] = {\n", ptr->name);
327 struct resource *r = ptr->res;
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);
335 fprintf(fil, ".next=&%s_res[%d]},\n", ptr->name, i++);
337 fprintf(fil, ".next=NULL },\n");
340 fprintf(fil, "\t };\n");
342 if (!ptr->used && ptr->type == device && (ptr->children || ptr->multidev)) {
343 fprintf(fil, "struct bus %s_links[] = {\n", ptr->name);
345 struct device *d = ptr;
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);
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);
356 fprintf(fil, "\t\t\t.next = NULL,\n");
357 fprintf(fil, "\t\t},\n");
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");
371 fprintf(fil, "\t};\n");
373 if ((ptr->type == chip) && (ptr->chiph_exists)) {
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;
378 fprintf(fil, "\t.%s = %s,\n", r->key, r->value);
381 fprintf(fil, "};\n\n");
383 fprintf(fil, "struct %s_config %s_info_%d;\n", ptr->name_underscore, ptr->name_underscore, ptr->id);
388 static void walk_device_tree(FILE *fil, struct device *ptr, void (*func)(FILE *, struct device*), struct device *chips) {
391 ptr = ptr->next_sibling;
395 int main(int argc, char** argv) {
397 printf("usage: sconfig vendor/mainboard outputdir\n");
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);
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);
412 FILE *filec = fopen(devtree, "r");
415 FILE *staticc = fopen(outputc, "w");
417 lastdev = head = &root;
421 if ((head->type == chip) && (!head->chiph_exists)) {
422 struct device *tmp = head;
424 while (head->next != tmp) head = head->next;
427 fprintf(staticc, "#include <device/device.h>\n");
428 fprintf(staticc, "#include <device/pci.h>\n");
429 struct header *h = &headers;
432 fprintf(staticc, "#include \"%s/chip.h\"\n", h->name);
434 fprintf(staticc, "\n/* pass 0 */\n");
435 walk_device_tree(staticc, &root, pass0, NULL);
436 fprintf(staticc, "\n/* pass 1 */\nstruct mainboard_config mainboard_info_0;\nstruct device **last_dev_p = &%s.next;\n", lastdev->name);
437 walk_device_tree(staticc, &root, pass1, NULL);