/* * sconfig, coreboot device tree compiler * * Copyright (C) 2010 coresystems GmbH * written by Patrick Georgi <patrick@georgi-clan.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. */ #include <ctype.h> #include "sconfig.h" #include "sconfig.tab.h" extern int linenum; struct device *head, *lastdev; struct header headers; static int devcount = 0; typedef enum { UNSLASH, SPLIT_1ST, TO_LOWER, TO_UPPER, } translate_t; static struct device root; static struct device mainboard = { .name = "mainboard", .name_underscore = "mainboard", .id = 0, .chip = &mainboard, .type = chip, .chiph_exists = 0, .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; dev->subsystem_vendor = -1; dev->subsystem_device = -1; 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) { extern char *yytext; fprintf(stderr, "line %d: %s: %s\n", linenum + 1, yytext, str); exit(1); } 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; } } char *translate_name(const char *str, translate_t mode) { char *b, *c; b = c = strdup(str); while (c && *c) { if ((mode == SPLIT_1ST) && (*c == '/')) { *c = 0; break; } if (*c == '/') *c = '_'; if (*c == '-') *c = '_'; if (mode == TO_UPPER) *c = toupper(*c); if (mode == TO_LOWER) *c = tolower(*c); c++; } return b; } 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 = translate_name(new_chip->name, UNSLASH); new_chip->type = chip; new_chip->chip = new_chip; struct stat st; char *chip_h = malloc(strlen(path) + 18); sprintf(chip_h, "src/%s", path); if ((stat(chip_h, &st) == -1) && (errno == ENOENT)) { /* root_complex gets away without a separate directory, but * exists on on pretty much all AMD chipsets. */ if (!strstr(path, "/root_complex")) { fprintf(stderr, "ERROR: Chip component %s does not exist.\n", path); exit(1); } } 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; free(chip_h); return new_chip; } void add_header(struct device *dev) { 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->chiph_exists = dev->chiph_exists; 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(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; switch (bus) { case PCI: new_d->path = ".type=DEVICE_PATH_PCI,{.pci={ .devfn = PCI_DEVFN(0x%x,%d)}}"; break; case PNP: new_d->path = ".type=DEVICE_PATH_PNP,{.pnp={ .port = 0x%x, .device = 0x%x }}"; break; case I2C: new_d->path = ".type=DEVICE_PATH_I2C,{.i2c={ .device = 0x%x, .mode_10bit = %d }}"; break; case APIC: new_d->path = ".type=DEVICE_PATH_APIC,{.apic={ .apic_id = 0x%x }}"; break; case CPU_CLUSTER: new_d->path = ".type=DEVICE_PATH_CPU_CLUSTER,{.cpu_cluster={ .cluster = 0x%x }}"; break; case CPU: new_d->path = ".type=DEVICE_PATH_CPU,{.cpu={ .id = 0x%x }}"; break; case DOMAIN: new_d->path = ".type=DEVICE_PATH_DOMAIN,{.domain={ .domain = 0x%x }}"; break; case IOAPIC: new_d->path = ".type=DEVICE_PATH_IOAPIC,{.ioapic={ .ioapic_id = 0x%x }}"; break; case GENERIC: new_d->path = ".type=DEVICE_PATH_GENERIC,{.generic={ .id = 0x%x, .subid = 0x%x }}"; break; case SPI: new_d->path = ".type=DEVICE_PATH_SPI,{.spi={ .cs = 0x%x }}"; break; } 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; } } void add_pci_subsystem_ids(struct device *dev, int vendor, int device, int inherit) { if (dev->bustype != PCI && dev->bustype != DOMAIN) { printf("ERROR: 'subsystem' only allowed for PCI devices\n"); exit(1); } dev->subsystem_vendor = vendor; dev->subsystem_device = device; dev->inherit_subsystem = inherit; } void add_ioapic_info(struct device *dev, int apicid, const char *_srcpin, int irqpin) { int srcpin; if (!_srcpin || strlen(_srcpin) < 4 || strncasecmp(_srcpin, "INT", 3) || _srcpin[3] < 'A' || _srcpin[3] > 'D') { printf("ERROR: malformed ioapic_irq args: %s\n", _srcpin); exit(1); } srcpin = _srcpin[3] - 'A'; if (dev->bustype != PCI && dev->bustype != DOMAIN) { printf("ERROR: ioapic config only allowed for PCI devices\n"); exit(1); } if (srcpin > 3) { printf("ERROR: srcpin '%d' invalid\n", srcpin); exit(1); } dev->pci_irq_info[srcpin].ioapic_irq_pin = irqpin; dev->pci_irq_info[srcpin].ioapic_dst_id = apicid; } static void pass0(FILE * fil, struct device *ptr) { if (ptr->type == device && ptr->id == 0) fprintf(fil, "ROMSTAGE_CONST struct bus %s_links[];\n", ptr->name); if ((ptr->type == device) && (ptr->id != 0) && (!ptr->used)) { fprintf(fil, "ROMSTAGE_CONST static struct device %s;\n", ptr->name); if (ptr->rescnt > 0) fprintf(fil, "ROMSTAGE_CONST struct resource %s_res[];\n", ptr->name); if (ptr->children || ptr->multidev) fprintf(fil, "ROMSTAGE_CONST struct bus %s_links[];\n", ptr->name); } } static void pass1(FILE * fil, struct device *ptr) { int pin; if (!ptr->used && (ptr->type == device)) { if (ptr->id != 0) fprintf(fil, "static "); fprintf(fil, "ROMSTAGE_CONST struct device %s = {\n", ptr->name); fprintf(fil, "#ifndef __PRE_RAM__\n"); fprintf(fil, "\t.ops = %s,\n", (ptr->ops) ? (ptr->ops) : "0"); fprintf(fil, "#endif\n"); 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->subsystem_vendor > 0) fprintf(fil, "\t.subsystem_vendor = 0x%04x,\n", ptr->subsystem_vendor); for (pin = 0; pin < 4; pin++) { if (ptr->pci_irq_info[pin].ioapic_irq_pin > 0) fprintf(fil, "\t.pci_irq_info[%d].ioapic_irq_pin = %d,\n", pin, ptr->pci_irq_info[pin].ioapic_irq_pin); if (ptr->pci_irq_info[pin].ioapic_dst_id > 0) fprintf(fil, "\t.pci_irq_info[%d].ioapic_dst_id = %d,\n", pin, ptr->pci_irq_info[pin].ioapic_dst_id); } if (ptr->subsystem_device > 0) fprintf(fil, "\t.subsystem_device = 0x%04x,\n", ptr->subsystem_device); if (ptr->rescnt > 0) { fprintf(fil, "\t.resource_list = &%s_res[0],\n", ptr->name); } if (ptr->children || ptr->multidev) fprintf(fil, "\t.link_list = &%s_links[0],\n", ptr->name); else fprintf(fil, "\t.link_list = NULL,\n"); if (ptr->sibling) fprintf(fil, "\t.sibling = &%s,\n", ptr->sibling->name); fprintf(fil, "#ifndef __PRE_RAM__\n"); fprintf(fil, "\t.chip_ops = &%s_ops,\n", ptr->chip->name_underscore); if (ptr->chip->chip == &mainboard) fprintf(fil, "\t.name = mainboard_name,\n"); fprintf(fil, "#endif\n"); if (ptr->chip->chiph_exists) 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, "ROMSTAGE_CONST 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, "ROMSTAGE_CONST 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, "ROMSTAGE_CONST struct %s_config %s_info_%d = {\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, "ROMSTAGE_CONST 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); } static void inherit_subsystem_ids(FILE * file, struct device *dev) { struct device *p; if (dev->subsystem_vendor != -1 && dev->subsystem_device != -1) { /* user already gave us a subsystem vendor/device */ return; } for (p = dev; p && p != p->parent; p = p->parent) { if (p->bustype != PCI && p->bustype != DOMAIN) continue; if (p->inherit_subsystem) { dev->subsystem_vendor = p->subsystem_vendor; dev->subsystem_device = p->subsystem_device; break; } } } static void usage(void) { printf("usage: sconfig devicetree_file output_file\n"); exit(1); } enum { DEVICEFILE_ARG = 1, OUTPUTFILE_ARG }; #define ARG_COUNT 3 int main(int argc, char **argv) { if (argc != ARG_COUNT) usage(); char *devtree = argv[DEVICEFILE_ARG]; char *outputc = argv[OUTPUTFILE_ARG]; headers.next = 0; FILE *filec = fopen(devtree, "r"); if (!filec) { perror(NULL); exit(1); } yyrestart(filec); 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; } FILE *autogen = fopen(outputc, "w"); if (!autogen) { fprintf(stderr, "Could not open file '%s' for writing: ", outputc); perror(NULL); exit(1); } struct header *h; fprintf(autogen, "#include <device/device.h>\n"); fprintf(autogen, "#include <device/pci.h>\n"); h = &headers; while (h->next) { h = h->next; if (h->chiph_exists) fprintf(autogen, "#include \"%s/chip.h\"\n", h->name); } fprintf(autogen, "\n#ifndef __PRE_RAM__\n"); fprintf(autogen, "__attribute__((weak)) struct chip_operations mainboard_ops = {};\n"); h = &headers; while (h->next) { h = h->next; char *name_underscore = translate_name(h->name, UNSLASH); fprintf(autogen, "__attribute__((weak)) struct chip_operations %s_ops = {};\n", name_underscore); free(name_underscore); } fprintf(autogen, "#endif\n"); walk_device_tree(autogen, &root, inherit_subsystem_ids, NULL); fprintf(autogen, "\n/* pass 0 */\n"); walk_device_tree(autogen, &root, pass0, NULL); fprintf(autogen, "\n/* pass 1 */\n" "ROMSTAGE_CONST struct device * ROMSTAGE_CONST last_dev = &%s;\n", lastdev->name); walk_device_tree(autogen, &root, pass1, NULL); fclose(autogen); return 0; }