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));
62 dev->subsystem_vendor = -1;
63 dev->subsystem_device = -1;
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))
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;
84 child = child->next_sibling;
92 void yyerror (char const *str)
95 fprintf (stderr, "line %d: %s: %s\n", linenum + 1, yytext, str);
99 void postprocess_devtree(void) {
100 root.next_sibling = root.children;
101 root.next_sibling->next_sibling = root.next_sibling->children;
103 struct device *dev = &root;
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;
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;
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);
125 for (c = new_chip->name_underscore; *c; c++) {
126 if (*c == '/') *c = '_';
127 if (*c == '-') *c = '_';
129 new_chip->type = chip;
130 new_chip->chip = new_chip;
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;
138 if (parent->latestchild) {
139 parent->latestchild->next_sibling = new_chip;
140 parent->latestchild->sibling = new_chip;
142 parent->latestchild = new_chip;
143 if (!parent->children)
144 parent->children = new_chip;
148 void add_header(struct device *dev) {
149 if (dev->chiph_exists) {
150 int include_exists = 0;
151 struct header *h = &headers;
153 int result = strcmp(dev->name, h->next->name);
158 if (result < 0) break;
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;
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;
176 new_d->path_a = strtol(strdup(devnum), &tmp, 16);
179 new_d->path_b = strtol(tmp, NULL, 16);
182 char *name = malloc(10);
183 sprintf(name, "_dev%d", new_d->id);
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;
190 if (parent->latestchild) {
191 parent->latestchild->next_sibling = new_d;
192 parent->latestchild->sibling = new_d;
194 parent->latestchild = new_d;
195 if (!parent->children)
196 parent->children = new_d;
198 lastdev->nextdev = new_d;
201 new_d->path = ".type=DEVICE_PATH_PCI,{.pci={ .devfn = PCI_DEVFN(0x%x,%d)}}";
204 new_d->path = ".type=DEVICE_PATH_PNP,{.pnp={ .port = 0x%x, .device = 0x%x }}";
207 new_d->path = ".type=DEVICE_PATH_I2C,{.i2c={ .device = 0x%x }}";
210 new_d->path = ".type=DEVICE_PATH_APIC,{.apic={ .apic_id = 0x%x }}";
212 if (bus == APIC_CLUSTER) {
213 new_d->path = ".type=DEVICE_PATH_APIC_CLUSTER,{.apic_cluster={ .cluster = 0x%x }}";
215 if (bus == PCI_DOMAIN) {
216 new_d->path = ".type=DEVICE_PATH_PCI_DOMAIN,{.pci_domain={ .domain = 0x%x }}";
221 void alias_siblings(struct device *d) {
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)) {
236 cmp = cmp->next_sibling;
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));
249 struct resource *head = dev->res;
250 while (head->next) head = head->next;
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));
264 struct reg *head = dev->reg;
265 // sorting to be equal to sconfig's behaviour
266 int sort = strcmp(r->key, head->key);
268 printf("ERROR: duplicate 'register' key.\n");
275 while ((head->next) && (strcmp(head->next->key, r->key)<0)) head = head->next;
276 r->next = head->next;
284 void add_pci_subsystem_ids(struct device *dev, int vendor, int device, int inherit)
286 if (dev->bustype != PCI && dev->bustype != PCI_DOMAIN) {
287 printf("ERROR: 'subsystem' only allowed for PCI devices\n");
291 dev->subsystem_vendor = vendor;
292 dev->subsystem_device = device;
293 dev->inherit_subsystem = inherit;
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);
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);
308 static void pass1(FILE *fil, struct device *ptr) {
309 if (!ptr->used && (ptr->type == device)) {
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);
323 if (ptr->subsystem_device > 0)
324 fprintf(fil, "\t.subsystem_device = 0x%04x,\n", ptr->subsystem_device);
326 if (ptr->rescnt > 0) {
327 fprintf(fil, "\t.resource_list = &%s_res[0],\n", ptr->name);
330 if (ptr->children || ptr->multidev)
331 fprintf(fil, "\t.link_list = &%s_links[0],\n", ptr->name);
333 fprintf(fil, "\t.link_list = NULL,\n", ptr->name);
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);
341 fprintf(fil, "\t.next=&%s\n", ptr->nextdev->name);
342 fprintf(fil, "};\n");
344 if (ptr->rescnt > 0) {
346 fprintf(fil, "struct resource %s_res[] = {\n", ptr->name);
347 struct resource *r = ptr->res;
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);
355 fprintf(fil, ".next=&%s_res[%d]},\n", ptr->name, i++);
357 fprintf(fil, ".next=NULL },\n");
360 fprintf(fil, "\t };\n");
362 if (!ptr->used && ptr->type == device && (ptr->children || ptr->multidev)) {
363 fprintf(fil, "struct bus %s_links[] = {\n", ptr->name);
365 struct device *d = ptr;
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);
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);
376 fprintf(fil, "\t\t\t.next = NULL,\n");
377 fprintf(fil, "\t\t},\n");
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");
391 fprintf(fil, "\t};\n");
393 if ((ptr->type == chip) && (ptr->chiph_exists)) {
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;
398 fprintf(fil, "\t.%s = %s,\n", r->key, r->value);
401 fprintf(fil, "};\n\n");
403 fprintf(fil, "struct %s_config %s_info_%d;\n", ptr->name_underscore, ptr->name_underscore, ptr->id);
408 static void walk_device_tree(FILE *fil, struct device *ptr, void (*func)(FILE *, struct device*), struct device *chips) {
411 ptr = ptr->next_sibling;
415 static void inherit_subsystem_ids(FILE *file, struct device *dev)
419 if (dev->subsystem_vendor != -1 && dev->subsystem_device != -1) {
420 /* user already gave us a subsystem vendor/device */
424 for(p = dev; p && p != p->parent; p = p->parent) {
426 if (p->bustype != PCI && p->bustype != PCI_DOMAIN)
429 if (p->inherit_subsystem) {
430 dev->subsystem_vendor = p->subsystem_vendor;
431 dev->subsystem_device = p->subsystem_device;
437 int main(int argc, char** argv) {
439 printf("usage: sconfig vendor/mainboard outputdir\n");
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);
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);
454 FILE *filec = fopen(devtree, "r");
456 fprintf(stderr, "Could not open file '%s' for reading: ", devtree);
463 lastdev = head = &root;
469 if ((head->type == chip) && (!head->chiph_exists)) {
470 struct device *tmp = head;
472 while (head->next != tmp) head = head->next;
475 FILE *staticc = fopen(outputc, "w");
477 fprintf(stderr, "Could not open file '%s' for writing: ", outputc);
482 fprintf(staticc, "#include <device/device.h>\n");
483 fprintf(staticc, "#include <device/pci.h>\n");
484 struct header *h = &headers;
487 fprintf(staticc, "#include \"%s/chip.h\"\n", h->name);
490 walk_device_tree(staticc, &root, inherit_subsystem_ids, NULL);
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);