coreboot-kgpe-d16/util/sconfig/main.c

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/*
* sconfig, coreboot device tree compiler
*
* Copyright (C) 2010 coresystems GmbH
* written by Patrick Georgi <patrick.georgi@coresystems.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
*/
#include "sconfig.h"
#include "sconfig.tab.h"
extern int linenum;
struct device *head, *lastdev;
struct header headers;
static int devcount = 0;
static struct device root;
static struct device mainboard = {
.name = "mainboard",
.name_underscore = "mainboard",
.id = 0,
.chip = &mainboard,
.type = chip,
.chiph_exists = 1,
.children = &root
};
static struct device root = {
.name = "dev_root",
.name_underscore = "dev_root",
.id = 0,
.chip = &mainboard,
.type = device,
.path = " .type = DEVICE_PATH_ROOT ",
.ops = "&default_dev_ops_root",
.parent = &root,
.bus = &root,
.enabled = 1
};
static struct device *new_dev(struct device *parent, struct device *bus) {
struct device *dev = malloc(sizeof(struct device));
memset(dev, 0, sizeof(struct device));
dev->id = ++devcount;
dev->parent = parent;
dev->bus = bus;
head->next = dev;
head = dev;
return dev;
}
static int device_match(struct device *a, struct device *b) {
if ((a->bustype == b->bustype) && (a->bus == b->bus) && (a->path_a == b->path_a) && (a->path_b == b->path_b))
return 1;
return 0;
}
void fold_in(struct device *parent) {
struct device *child = parent->children;
struct device *latest = 0;
while (child != latest) {
if (child->children) {
if (!latest) latest = child->children;
parent->latestchild->next_sibling = child->children;
parent->latestchild = child->latestchild;
}
child = child->next_sibling;
}
}
int yywrap(void) {
return 1;
}
void yyerror (char const *str)
{
fprintf (stderr, "line %d: %s\n", linenum, str);
}
void postprocess_devtree(void) {
root.next_sibling = root.children;
root.next_sibling->next_sibling = root.next_sibling->children;
struct device *dev = &root;
while (dev) {
/* skip "chip" elements in children chain */
while (dev->children && (dev->children->type == chip)) dev->children = dev->children->children;
/* skip "chip" elements and functions of the same device in sibling chain */
while (dev->sibling && dev->sibling->used) dev->sibling = dev->sibling->sibling;
/* If end of chain, and parent is a chip, move on */
if (!dev->sibling && (dev->parent->type == chip)) dev->sibling = dev->parent->sibling;
/* skip chips */
while (dev->sibling && dev->sibling->type == chip) dev->sibling = dev->sibling->children;
/* skip duplicate function elements in nextdev chain */
while (dev->nextdev && dev->nextdev->used) dev->nextdev = dev->nextdev->nextdev;
dev = dev->next_sibling;
}
}
struct device *new_chip(struct device *parent, struct device *bus, char *path) {
struct device *new_chip = new_dev(parent, bus);
new_chip->chiph_exists = 1;
new_chip->name = path;
new_chip->name_underscore = strdup(new_chip->name);
char *c;
for (c = new_chip->name_underscore; *c; c++) {
if (*c == '/') *c = '_';
if (*c == '-') *c = '_';
}
new_chip->type = chip;
new_chip->chip = new_chip;
struct stat st;
char *chip_h = malloc(strlen(path)+12);
sprintf(chip_h, "src/%s/chip.h", path);
if ((stat(chip_h, &st) == -1) && (errno == ENOENT))
new_chip->chiph_exists = 0;
if (parent->latestchild) {
parent->latestchild->next_sibling = new_chip;
parent->latestchild->sibling = new_chip;
}
parent->latestchild = new_chip;
if (!parent->children)
parent->children = new_chip;
return new_chip;
}
void add_header(struct device *dev) {
if (dev->chiph_exists) {
int include_exists = 0;
struct header *h = &headers;
while (h->next) {
int result = strcmp(dev->name, h->next->name);
if (result == 0) {
include_exists = 1;
break;
}
if (result < 0) break;
h = h->next;
}
if (!include_exists) {
struct header *tmp = h->next;
h->next = malloc(sizeof(struct header));
memset(h->next, 0, sizeof(struct header));
h->next->name = dev->name;
h->next->next = tmp;
}
}
}
struct device *new_device(struct device *parent, struct device *busdev, const int bus, const char *devnum, int enabled) {
struct device *new_d = new_dev(parent, busdev);
new_d->bustype = bus;
char *tmp;
new_d->path_a = strtol(strdup(devnum), &tmp, 16);
if (*tmp == '.') {
tmp++;
new_d->path_b = strtol(tmp, NULL, 16);
}
char *name = malloc(10);
sprintf(name, "_dev%d", new_d->id);
new_d->name = name;
new_d->name_underscore = name; // shouldn't be necessary, but avoid 0-ptr
new_d->type = device;
new_d->enabled = enabled;
new_d->chip = new_d->parent->chip;
if (parent->latestchild) {
parent->latestchild->next_sibling = new_d;
parent->latestchild->sibling = new_d;
}
parent->latestchild = new_d;
if (!parent->children)
parent->children = new_d;
lastdev->nextdev = new_d;
lastdev = new_d;
if (bus == PCI) {
new_d->path = ".type=DEVICE_PATH_PCI,{.pci={ .devfn = PCI_DEVFN(0x%x,%d)}}";
}
if (bus == PNP) {
new_d->path = ".type=DEVICE_PATH_PNP,{.pnp={ .port = 0x%x, .device = 0x%x }}";
}
if (bus == I2C) {
new_d->path = ".type=DEVICE_PATH_I2C,{.i2c={ .device = 0x%x }}";
}
if (bus == APIC) {
new_d->path = ".type=DEVICE_PATH_APIC,{.apic={ .apic_id = 0x%x }}";
}
if (bus == APIC_CLUSTER) {
new_d->path = ".type=DEVICE_PATH_APIC_CLUSTER,{.apic_cluster={ .cluster = 0x%x }}";
}
if (bus == PCI_DOMAIN) {
new_d->path = ".type=DEVICE_PATH_PCI_DOMAIN,{.pci_domain={ .domain = 0x%x }}";
}
return new_d;
}
void alias_siblings(struct device *d) {
while (d) {
int link = 0;
struct device *cmp = d->next_sibling;
while (cmp && (cmp->bus == d->bus) && (cmp->path_a == d->path_a) && (cmp->path_b == d->path_b)) {
if (cmp->type==device && !cmp->used) {
if (device_match(d, cmp)) {
d->multidev = 1;
cmp->id = d->id;
cmp->name = d->name;
cmp->used = 1;
cmp->link = ++link;
}
}
cmp = cmp->next_sibling;
}
d = d->next_sibling;
}
}
void add_resource(struct device *dev, int type, int index, int base) {
struct resource *r = malloc(sizeof(struct resource));
memset (r, 0, sizeof(struct resource));
r->type = type;
r->index = index;
r->base = base;
if (dev->res) {
struct resource *head = dev->res;
while (head->next) head = head->next;
head->next = r;
} else {
dev->res = r;
}
dev->rescnt++;
}
void add_register(struct device *dev, char *name, char *val) {
struct reg *r = malloc(sizeof(struct reg));
memset (r, 0, sizeof(struct reg));
r->key = name;
r->value = val;
if (dev->reg) {
struct reg *head = dev->reg;
// sorting to be equal to sconfig's behaviour
int sort = strcmp(r->key, head->key);
if (sort == 0) {
printf("ERROR: duplicate 'register' key.\n");
exit(1);
}
if (sort<0) {
r->next = head;
dev->reg = r;
} else {
while ((head->next) && (strcmp(head->next->key, r->key)<0)) head = head->next;
r->next = head->next;
head->next = r;
}
} else {
dev->reg = r;
}
}
static void pass0(FILE *fil, struct device *ptr) {
if (ptr->type == device && ptr->id == 0)
fprintf(fil, "struct bus %s_links[];\n", ptr->name);
if ((ptr->type == device) && (ptr->id != 0) && (!ptr->used)) {
fprintf(fil, "static struct device %s;\n", ptr->name);
if (ptr->rescnt > 0)
fprintf(fil, "struct resource %s_res[];\n", ptr->name);
if (ptr->children || ptr->multidev)
fprintf(fil, "struct bus %s_links[];\n", ptr->name);
}
}
static void pass1(FILE *fil, struct device *ptr) {
if (!ptr->used && (ptr->type == device)) {
if (ptr->id != 0)
fprintf(fil, "static ", ptr->name);
fprintf(fil, "struct device %s = {\n", ptr->name);
fprintf(fil, "\t.ops = %s,\n", (ptr->ops)?(ptr->ops):"0");
fprintf(fil, "\t.bus = &%s_links[%d],\n", ptr->bus->name, ptr->bus->link);
fprintf(fil, "\t.path = {");
fprintf(fil, ptr->path, ptr->path_a, ptr->path_b);
fprintf(fil, "},\n");
fprintf(fil, "\t.enabled = %d,\n", ptr->enabled);
fprintf(fil, "\t.on_mainboard = 1,\n");
if (ptr->rescnt > 0) {
fprintf(fil, "\t.resource_list = &%s_res[0],\n", ptr->name);
}
int link = 0;
if (ptr->children || ptr->multidev)
fprintf(fil, "\t.link_list = &%s_links[0],\n", ptr->name);
else
fprintf(fil, "\t.link_list = NULL,\n", ptr->name);
if (ptr->sibling)
fprintf(fil, "\t.sibling = &%s,\n", ptr->sibling->name);
if (ptr->chip->chiph_exists) {
fprintf(fil, "\t.chip_ops = &%s_ops,\n", ptr->chip->name_underscore);
fprintf(fil, "\t.chip_info = &%s_info_%d,\n", ptr->chip->name_underscore, ptr->chip->id);
}
if (ptr->nextdev)
fprintf(fil, "\t.next=&%s\n", ptr->nextdev->name);
fprintf(fil, "};\n");
}
if (ptr->rescnt > 0) {
int i=1;
fprintf(fil, "struct resource %s_res[] = {\n", ptr->name);
struct resource *r = ptr->res;
while (r) {
fprintf(fil, "\t\t{ .flags=IORESOURCE_FIXED | IORESOURCE_ASSIGNED | IORESOURCE_");
if (r->type == IRQ) fprintf(fil, "IRQ");
if (r->type == DRQ) fprintf(fil, "DRQ");
if (r->type == IO) fprintf(fil, "IO");
fprintf(fil, ", .index=0x%x, .base=0x%x,", r->index, r->base);
if (r->next)
fprintf(fil, ".next=&%s_res[%d]},\n", ptr->name, i++);
else
fprintf(fil, ".next=NULL },\n");
r = r->next;
}
fprintf(fil, "\t };\n");
}
if (!ptr->used && ptr->type == device && (ptr->children || ptr->multidev)) {
fprintf(fil, "struct bus %s_links[] = {\n", ptr->name);
if (ptr->multidev) {
struct device *d = ptr;
while (d) {
if (device_match(d, ptr)) {
fprintf(fil, "\t\t[%d] = {\n", d->link);
fprintf(fil, "\t\t\t.link_num = %d,\n", d->link);
fprintf(fil, "\t\t\t.dev = &%s,\n", d->name);
if (d->children)
fprintf(fil, "\t\t\t.children = &%s,\n", d->children->name);
if (d->next_sibling && device_match(d->next_sibling, ptr))
fprintf(fil, "\t\t\t.next=&%s_links[%d],\n", d->name, d->link+1);
else
fprintf(fil, "\t\t\t.next = NULL,\n");
fprintf(fil, "\t\t},\n");
}
d = d->next_sibling;
}
} else {
if (ptr->children) {
fprintf(fil, "\t\t[0] = {\n");
fprintf(fil, "\t\t\t.link_num = 0,\n");
fprintf(fil, "\t\t\t.dev = &%s,\n", ptr->name);
fprintf(fil, "\t\t\t.children = &%s,\n", ptr->children->name);
fprintf(fil, "\t\t\t.next = NULL,\n");
fprintf(fil, "\t\t},\n");
}
}
fprintf(fil, "\t};\n");
}
if ((ptr->type == chip) && (ptr->chiph_exists)) {
if (ptr->reg) {
fprintf(fil, "struct %s_config %s_info_%d\t= {\n", ptr->name_underscore, ptr->name_underscore, ptr->id);
struct reg *r = ptr->reg;
while (r) {
fprintf(fil, "\t.%s = %s,\n", r->key, r->value);
r = r->next;
}
fprintf(fil, "};\n\n");
} else {
fprintf(fil, "struct %s_config %s_info_%d;\n", ptr->name_underscore, ptr->name_underscore, ptr->id);
}
}
}
static void walk_device_tree(FILE *fil, struct device *ptr, void (*func)(FILE *, struct device*), struct device *chips) {
do {
func(fil, ptr);
ptr = ptr->next_sibling;
} while (ptr);
}
int main(int argc, char** argv) {
if (argc != 3) {
printf("usage: sconfig vendor/mainboard outputdir\n");
return 1;
}
char *mainboard=argv[1];
char *outputdir=argv[2];
char *devtree=malloc(strlen(mainboard)+30);
char *outputc=malloc(strlen(outputdir)+10);
sprintf(devtree, "src/mainboard/%s/devicetree.cb", mainboard);
sprintf(outputc, "%s/static.c", outputdir);
headers.next = malloc(sizeof(struct header));
headers.next->name = malloc(strlen(mainboard)+12);
headers.next->next = 0;
sprintf(headers.next->name, "mainboard/%s", mainboard);
FILE *filec = fopen(devtree, "r");
yyrestart(filec);
FILE *staticc = fopen(outputc, "w");
lastdev = head = &root;
yyparse();
fclose(filec);
if ((head->type == chip) && (!head->chiph_exists)) {
struct device *tmp = head;
head = &root;
while (head->next != tmp) head = head->next;
}
fprintf(staticc, "#include <device/device.h>\n");
fprintf(staticc, "#include <device/pci.h>\n");
struct header *h = &headers;
while (h->next) {
h = h->next;
fprintf(staticc, "#include \"%s/chip.h\"\n", h->name);
}
fprintf(staticc, "\n/* pass 0 */\n");
walk_device_tree(staticc, &root, pass0, NULL);
fprintf(staticc, "\n/* pass 1 */\nstruct mainboard_config mainboard_info_0;\nstruct device **last_dev_p = &%s.next;\n", lastdev->name);
walk_device_tree(staticc, &root, pass1, NULL);
fclose(staticc);
return 0;
}