500 lines
13 KiB
Plaintext
Executable File
500 lines
13 KiB
Plaintext
Executable File
%{
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/*
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* sconfig, coreboot device tree compiler
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*
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* Copyright (C) 2010 coresystems GmbH
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* written by Patrick Georgi <patrick.georgi@coresystems.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <errno.h>
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enum devtype { chip, device };
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struct resource;
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struct resource {
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int type;
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int index;
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int base;
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struct resource *next;
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};
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struct reg;
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struct reg {
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char *key;
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char *value;
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struct reg *next;
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};
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struct device;
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struct device {
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int id;
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int enabled;
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int used;
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int multidev;
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int link;
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int rescnt;
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int chiph_exists;
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char *ops;
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char *name;
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char *aliased_name;
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char *name_underscore;
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char *path;
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int path_a;
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int path_b;
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int bustype;
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enum devtype type;
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struct device *parent;
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struct device *bus;
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struct device *next;
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struct device *nextdev;
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struct device *children;
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struct device *latestchild;
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struct device *next_sibling;
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struct device *sibling;
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struct device *chip;
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struct resource *res;
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struct reg *reg;
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} *head, *lastdev, *cur_parent, *cur_bus, root;
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struct header;
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struct header {
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char *name;
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struct header *next;
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} headers;
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int devcount = 0;
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struct device *new_dev() {
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struct device *dev = malloc(sizeof(struct device));
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memset(dev, 0, sizeof(struct device));
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dev->id = ++devcount;
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dev->parent = cur_parent;
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dev->bus = cur_bus;
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head->next = dev;
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head = dev;
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return dev;
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}
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int device_match(struct device *a, struct device *b) {
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if ((a->bustype == b->bustype) && (a->bus == b->bus) && (a->path_a == b->path_a) && (a->path_b == b->path_b))
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return 1;
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return 0;
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}
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void fold_in(struct device *parent) {
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struct device *child = parent->children;
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struct device *latest = 0;
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while (child != latest) {
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if (child->children) {
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if (!latest) latest = child->children;
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parent->latestchild->next_sibling = child->children;
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parent->latestchild = child->latestchild;
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}
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child = child->next_sibling;
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}
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}
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int yywrap(void) {
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return 1;
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}
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void yyerror (char const *str)
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{
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fprintf (stderr, "%s\n", str);
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}
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%}
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%union {
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struct device *device;
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char *string;
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int number;
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}
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%token CHIP DEVICE REGISTER BOOL BUS RESOURCE END EQUALS HEX STRING PCI PNP I2C APIC APIC_CLUSTER PCI_DOMAIN IRQ DRQ IO NUMBER
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%%
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devtree: devchip {
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root.next_sibling = root.children;
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root.next_sibling->next_sibling = root.next_sibling->children;
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struct device *dev = &root;
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while (dev) {
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/* skip "chip" elements in children chain */
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while (dev->children && (dev->children->type == chip)) dev->children = dev->children->children;
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/* skip "chip" elements and functions of the same device in sibling chain */
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while (dev->sibling && dev->sibling->used) dev->sibling = dev->sibling->sibling;
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/* If end of chain, and parent is a chip, move on */
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if (!dev->sibling && (dev->parent->type == chip)) dev->sibling = dev->parent->sibling;
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/* skip chips */
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while (dev->sibling && dev->sibling->type == chip) dev->sibling = dev->sibling->children;
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/* skip duplicate function elements in nextdev chain */
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while (dev->nextdev && dev->nextdev->used) dev->nextdev = dev->nextdev->nextdev;
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dev = dev->next_sibling;
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}
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};
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devchip: chip | device ;
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devices: devices devchip | devices registers | ;
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devicesorresources: devicesorresources devchip | devicesorresources resource | ;
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chip: CHIP STRING /* == path */ {
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$<device>$ = new_dev();
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$<device>$->chiph_exists = 1;
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$<device>$->name = $<string>2;
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$<device>$->name_underscore = strdup($<device>$->name);
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char *c;
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for (c = $<device>$->name_underscore; *c; c++) {
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if (*c == '/') *c = '_';
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}
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$<device>$->type = chip;
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$<device>$->chip = $<device>$;
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struct stat st;
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char *chip_h = malloc(strlen($<string>2)+12);
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sprintf(chip_h, "src/%s/chip.h", $<string>2);
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if ((stat(chip_h, &st) == -1) && (errno == ENOENT))
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$<device>$->chiph_exists = 0;
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if (cur_parent->latestchild) {
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cur_parent->latestchild->next_sibling = $<device>$;
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cur_parent->latestchild->sibling = $<device>$;
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}
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cur_parent->latestchild = $<device>$;
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if (!cur_parent->children)
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cur_parent->children = $<device>$;
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cur_parent = $<device>$;
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}
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devices END {
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cur_parent = $<device>3->parent;
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fold_in($<device>3);
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if ($<device>3->chiph_exists) {
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int include_exists = 0;
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struct header *h = &headers;
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while (h->next) {
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int result = strcmp($<device>3->name, h->next->name);
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if (result == 0) {
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include_exists = 1;
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break;
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}
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if (result < 0) break;
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h = h->next;
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}
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if (!include_exists) {
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struct header *tmp = h->next;
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h->next = malloc(sizeof(struct header));
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memset(h->next, 0, sizeof(struct header));
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h->next->name = $<device>3->name;
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h->next->next = tmp;
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break;
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}
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}
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};
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device: DEVICE BUS NUMBER /* == devnum */ BOOL {
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$<device>$ = new_dev();
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$<device>$->bustype = $<number>2;
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char *tmp;
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$<device>$->path_a = strtol(strdup($<string>3), &tmp, 16);
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if (*tmp == '.') {
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tmp++;
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$<device>$->path_b = strtol(tmp, NULL, 16);
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}
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char *name = malloc(10);
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sprintf(name, "_dev%d", $<device>$->id);
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$<device>$->name = name;
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$<device>$->name_underscore = name; // shouldn't be necessary, but avoid 0-ptr
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$<device>$->type = device;
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$<device>$->enabled = $<number>4;
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$<device>$->chip = $<device>$->parent->chip;
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if (cur_parent->latestchild) {
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cur_parent->latestchild->next_sibling = $<device>$;
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cur_parent->latestchild->sibling = $<device>$;
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}
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cur_parent->latestchild = $<device>$;
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if (!cur_parent->children)
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cur_parent->children = $<device>$;
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lastdev->nextdev = $<device>$;
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lastdev = $<device>$;
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if ($<number>2 == PCI) {
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$<device>$->path = ".type=DEVICE_PATH_PCI,{.pci={ .devfn = PCI_DEVFN(0x%x,%d)}}";
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}
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if ($<number>2 == PNP) {
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$<device>$->path = ".type=DEVICE_PATH_PNP,{.pnp={ .port = 0x%x, .device = 0x%x }}";
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}
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if ($<number>2 == I2C) {
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$<device>$->path = ".type=DEVICE_PATH_I2C,{.i2c={ .device = 0x%x }}";
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}
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if ($<number>2 == APIC) {
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$<device>$->path = ".type=DEVICE_PATH_APIC,{.apic={ .apic_id = 0x%x }}";
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}
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if ($<number>2 == APIC_CLUSTER) {
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$<device>$->path = ".type=DEVICE_PATH_APIC_CLUSTER,{.apic_cluster={ .cluster = 0x%x }}";
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}
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if ($<number>2 == PCI_DOMAIN) {
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$<device>$->path = ".type=DEVICE_PATH_PCI_DOMAIN,{.pci_domain={ .domain = 0x%x }}";
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}
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cur_parent = $<device>$;
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cur_bus = $<device>$;
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}
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devicesorresources END {
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cur_parent = $<device>5->parent;
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cur_bus = $<device>5->bus;
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fold_in($<device>5);
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struct device *d = $<device>5->children;
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while (d) {
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int link = 0;
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struct device *cmp = d->next_sibling;
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while (cmp && (cmp->bus == d->bus) && (cmp->path_a == d->path_a) && (cmp->path_b == d->path_b)) {
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if (cmp->type==device && !cmp->used) {
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if (device_match(d, cmp)) {
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d->multidev = 1;
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cmp->aliased_name = malloc(12);
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sprintf(cmp->aliased_name, "_dev%d", cmp->id);
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cmp->id = d->id;
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cmp->name = d->name;
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cmp->used = 1;
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cmp->link = ++link;
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}
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}
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cmp = cmp->next_sibling;
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}
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d = d->next_sibling;
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}
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};
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resource: RESOURCE NUMBER /* == resnum */ EQUALS NUMBER /* == resval */
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{
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struct resource *r = malloc(sizeof(struct resource));
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memset (r, 0, sizeof(struct resource));
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r->type = $<number>1;
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r->index = strtol($<string>2, NULL, 0);
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r->base = strtol($<string>4, NULL, 0);
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if (cur_parent->res) {
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struct resource *head = cur_parent->res;
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while (head->next) head = head->next;
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head->next = r;
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} else {
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cur_parent->res = r;
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}
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cur_parent->rescnt++;
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}
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;
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registers: REGISTER STRING /* == regname */ EQUALS STRING /* == regval */
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{
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struct reg *r = malloc(sizeof(struct reg));
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memset (r, 0, sizeof(struct reg));
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r->key = $<string>2;
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r->value = $<string>4;
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if (cur_parent->reg) {
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struct reg *head = cur_parent->reg;
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// sorting to be equal to sconfig's behaviour
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int sort = strcmp(r->key, head->key);
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if (sort == 0) {
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printf("ERROR: duplicate 'register' key.\n");
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exit(1);
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}
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if (sort<0) {
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r->next = head;
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cur_parent->reg = r;
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} else {
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while ((head->next) && (strcmp(head->next->key, r->key)<0)) head = head->next;
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r->next = head->next;
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head->next = r;
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}
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} else {
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cur_parent->reg = r;
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}
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}
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;
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%%
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void pass0(FILE *fil, struct device *ptr) {
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if ((ptr->type == device) && (ptr->id != 0) && (!ptr->used))
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fprintf(fil, "struct device %s;\n", ptr->name);
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if ((ptr->type == device) && (ptr->id != 0) && ptr->used)
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fprintf(fil, "struct device %s;\n", ptr->aliased_name);
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}
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void pass1(FILE *fil, struct device *ptr) {
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if (!ptr->used && (ptr->type == device)) {
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fprintf(fil, "struct device %s = {\n", ptr->name);
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fprintf(fil, "\t.ops = %s,\n", (ptr->ops)?(ptr->ops):"0");
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fprintf(fil, "\t.bus = &%s.link[%d],\n", ptr->bus->name, ptr->bus->link);
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fprintf(fil, "\t.path = {");
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fprintf(fil, ptr->path, ptr->path_a, ptr->path_b);
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fprintf(fil, "},\n");
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fprintf(fil, "\t.enabled = %d,\n", ptr->enabled);
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fprintf(fil, "\t.on_mainboard = 1,\n");
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if (ptr->rescnt > 0) {
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fprintf(fil, "\t.resources = %d,\n", ptr->rescnt);
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fprintf(fil, "\t.resource = {\n");
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struct resource *r = ptr->res;
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while (r) {
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fprintf(fil, "\t\t{ .flags=IORESOURCE_FIXED | IORESOURCE_ASSIGNED | IORESOURCE_");
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if (r->type == IRQ) fprintf(fil, "IRQ");
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if (r->type == DRQ) fprintf(fil, "DRQ");
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if (r->type == IO) fprintf(fil, "IO");
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fprintf(fil, ", .index=0x%x, .base=0x%x},\n", r->index, r->base);
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r = r->next;
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}
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fprintf(fil, "\t },\n");
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}
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int link = 0;
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fprintf(fil, "\t.link = {\n");
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if (ptr->multidev) {
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struct device *d = ptr;
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while (d) {
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if (device_match(d, ptr)) {
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fprintf(fil, "\t\t[%d] = {\n", d->link);
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fprintf(fil, "\t\t\t.link = %d,\n", d->link);
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fprintf(fil, "\t\t\t.dev = &%s,\n", d->name);
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if (d->children)
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fprintf(fil, "\t\t\t.children = &%s,\n", d->children->name);
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fprintf(fil, "\t\t},\n");
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link++;
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}
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d = d->next_sibling;
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}
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} else {
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if (ptr->children) {
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fprintf(fil, "\t\t[0] = {\n");
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fprintf(fil, "\t\t\t.link = 0,\n");
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fprintf(fil, "\t\t\t.dev = &%s,\n", ptr->name);
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fprintf(fil, "\t\t\t.children = &%s,\n", ptr->children->name);
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fprintf(fil, "\t\t},\n");
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link++;
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}
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}
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fprintf(fil, "\t},\n");
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fprintf(fil, "\t.links = %d,\n", link);
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if (ptr->sibling)
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fprintf(fil, "\t.sibling = &%s,\n", ptr->sibling->name);
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if (ptr->chip->chiph_exists) {
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fprintf(fil, "\t.chip_ops = &%s_ops,\n", ptr->chip->name_underscore);
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fprintf(fil, "\t.chip_info = &%s_info_%d,\n", ptr->chip->name_underscore, ptr->chip->id);
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}
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if (ptr->nextdev)
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fprintf(fil, "\t.next=&%s\n", ptr->nextdev->name);
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fprintf(fil, "};\n");
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}
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if ((ptr->type == chip) && (ptr->chiph_exists)) {
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if (ptr->reg) {
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fprintf(fil, "struct %s_config %s_info_%d\t= {\n", ptr->name_underscore, ptr->name_underscore, ptr->id);
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struct reg *r = ptr->reg;
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while (r) {
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fprintf(fil, "\t.%s = %s,\n", r->key, r->value);
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r = r->next;
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}
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fprintf(fil, "};\n\n");
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} else {
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fprintf(fil, "struct %s_config %s_info_%d;\n", ptr->name_underscore, ptr->name_underscore, ptr->id);
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}
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}
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}
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void walk_device_tree(FILE *fil, struct device *ptr, void (*func)(FILE *, struct device*), struct device *chips) {
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do {
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func(fil, ptr);
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ptr = ptr->next_sibling;
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} while (ptr);
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}
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struct device mainboard = {
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.name = "mainboard",
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.name_underscore = "mainboard",
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.id = 0,
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.chip = &mainboard,
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.type = chip,
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.chiph_exists = 1,
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.children = &root
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};
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struct device root = {
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.name = "dev_root",
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.name_underscore = "dev_root",
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.id = 0,
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.chip = &mainboard,
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.type = device,
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.path = " .type = DEVICE_PATH_ROOT ",
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.ops = "&default_dev_ops_root",
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.parent = &root,
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.bus = &root,
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.enabled = 1
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};
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int main(int argc, char** argv) {
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if (argc != 3) {
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printf("usage: sconfig vendor/mainboard outputdir\n");
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return 1;
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}
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char *mainboard=argv[1];
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char *outputdir=argv[2];
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char *devtree=malloc(strlen(mainboard)+30);
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char *outputc=malloc(strlen(outputdir)+10);
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sprintf(devtree, "src/mainboard/%s/devicetree.cb", mainboard);
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sprintf(outputc, "%s/static.c", outputdir);
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headers.next = malloc(sizeof(struct header));
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headers.next->name = malloc(strlen(mainboard)+12);
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headers.next->next = 0;
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sprintf(headers.next->name, "mainboard/%s", mainboard);
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FILE *filec = fopen(devtree, "r");
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yyrestart(filec);
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FILE *staticc = fopen(outputc, "w");
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cur_bus = cur_parent = lastdev = head = &root;
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yyparse();
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fclose(filec);
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if ((head->type == chip) && (!head->chiph_exists)) {
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struct device *tmp = head;
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head = &root;
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while (head->next != tmp) head = head->next;
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}
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fprintf(staticc, "#include <device/device.h>\n");
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fprintf(staticc, "#include <device/pci.h>\n");
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|
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);
|
|
}
|