| /* |
| * 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> |
| /* stat.h needs to be included before commonlib/helpers.h to avoid errors.*/ |
| #include <sys/stat.h> |
| #include <commonlib/helpers.h> |
| #include "sconfig.h" |
| #include "sconfig.tab.h" |
| |
| extern int linenum; |
| |
| /* |
| * Maintains list of all the unique chip structures for the board. |
| * This is shared across base and override device trees since we need to |
| * generate headers for all chips added by both the trees. |
| */ |
| static struct chip chip_header; |
| |
| /* |
| * This is intentionally shared between chip and device structure ids because it |
| * is easier to track the order of parsing for chip and device. |
| */ |
| static int count = 0; |
| |
| typedef enum { |
| UNSLASH, |
| SPLIT_1ST, |
| TO_LOWER, |
| TO_UPPER, |
| } translate_t; |
| |
| /* |
| * Mainboard is assumed to have a root device whose bus is the parent of all the |
| * devices that are added by parsing the devicetree file. This device has a |
| * mainboard chip instance associated with it. |
| * |
| * |
| * |
| * +------------------------+ +----------------------+ |
| * | Root device | | Mainboard | |
| * +---------+ (base_root_dev) +--------------->+ instance + |
| * | | | chip_instance | (mainboard_instance)| |
| * | +------------------------+ | | |
| * | | +----------------------+ |
| * | | bus | |
| * | parent v | |
| * | +-------------------+ | |
| * | | Root bus | | |
| * +----------->+ (base_root_bus) | | |
| * | | | |
| * +-------------------+ | |
| * | | |
| * | children | chip |
| * v | |
| * X | |
| * (new devices will | |
| * be added here as | |
| * children) | |
| * | |
| * | |
| * | |
| * +-------+----------+ |
| * | | |
| * | Mainboard chip +----------->X (new chips will be |
| * | (mainboard_chip) | added here) |
| * | | |
| * +------------------+ |
| * |
| * |
| */ |
| |
| /* Root device of primary tree. */ |
| static struct device base_root_dev; |
| |
| /* Root device of override tree (if applicable). */ |
| static struct device override_root_dev; |
| |
| static struct chip_instance mainboard_instance; |
| |
| static struct bus base_root_bus = { |
| .id = 0, |
| .dev = &base_root_dev, |
| }; |
| |
| static struct device base_root_dev = { |
| .name = "dev_root", |
| .id = 0, |
| .chip_instance = &mainboard_instance, |
| .path = " .type = DEVICE_PATH_ROOT ", |
| .parent = &base_root_bus, |
| .enabled = 1, |
| .bus = &base_root_bus, |
| }; |
| |
| static struct bus override_root_bus = { |
| .id = 0, |
| .dev = &override_root_dev, |
| }; |
| |
| static struct device override_root_dev = { |
| .name = "override_root", |
| .id = 0, |
| /* |
| * Override tree root device points to the same mainboard chip instance |
| * as the base tree root device. It should not cause any side-effects |
| * since the mainboard chip instance pointer in override tree will just |
| * be ignored. |
| */ |
| .chip_instance = &mainboard_instance, |
| .path = " .type = DEVICE_PATH_ROOT ", |
| .parent = &override_root_bus, |
| .enabled = 1, |
| .bus = &override_root_bus, |
| }; |
| |
| static struct chip mainboard_chip = { |
| .name = "mainboard", |
| .name_underscore = "mainboard", |
| .instance = &mainboard_instance, |
| }; |
| |
| static struct chip_instance mainboard_instance = { |
| .id = 0, |
| .chip = &mainboard_chip, |
| .ref_count = 2, |
| }; |
| |
| /* This is the parent of all devices added by parsing the devicetree file. */ |
| struct bus *root_parent; |
| |
| struct queue_entry { |
| void *data; |
| struct queue_entry *next; |
| struct queue_entry *prev; |
| }; |
| |
| #define S_ALLOC(_s) s_alloc(__func__, _s) |
| |
| static void *s_alloc(const char *f, size_t s) |
| { |
| void *data = calloc(1, s); |
| if (!data) { |
| fprintf(stderr, "%s: Failed to alloc mem!\n", f); |
| exit(1); |
| } |
| return data; |
| } |
| |
| static struct queue_entry *new_queue_entry(void *data) |
| { |
| struct queue_entry *e = S_ALLOC(sizeof(*e)); |
| |
| e->data = data; |
| e->next = e->prev = e; |
| return e; |
| } |
| |
| static void enqueue_tail(struct queue_entry **q_head, void *data) |
| { |
| struct queue_entry *tmp = new_queue_entry(data); |
| struct queue_entry *q = *q_head; |
| |
| if (!q) { |
| *q_head = tmp; |
| return; |
| } |
| |
| q->prev->next = tmp; |
| tmp->prev = q->prev; |
| q->prev = tmp; |
| tmp->next = q; |
| } |
| |
| static void *dequeue_tail(struct queue_entry **q_head) |
| { |
| struct queue_entry *q = *q_head; |
| struct queue_entry *tmp; |
| void *data; |
| |
| if (!q) |
| return NULL; |
| |
| tmp = q->prev; |
| |
| if (tmp == q) |
| *q_head = NULL; |
| else { |
| tmp->prev->next = q; |
| q->prev = tmp->prev; |
| } |
| |
| data = tmp->data; |
| free(tmp); |
| |
| return data; |
| } |
| |
| static void *dequeue_head(struct queue_entry **q_head) |
| { |
| struct queue_entry *q = *q_head; |
| struct queue_entry *tmp = q; |
| void *data; |
| |
| if (!q) |
| return NULL; |
| |
| if (q->next == q) |
| *q_head = NULL; |
| else { |
| q->next->prev = q->prev; |
| q->prev->next = q->next; |
| *q_head = q->next; |
| } |
| |
| data = tmp->data; |
| free(tmp); |
| |
| return data; |
| } |
| |
| static void *peek_queue_head(struct queue_entry *q_head) |
| { |
| if (!q_head) |
| return NULL; |
| |
| return q_head->data; |
| } |
| |
| static struct queue_entry *chip_q_head; |
| |
| void chip_enqueue_tail(void *data) |
| { |
| enqueue_tail(&chip_q_head, data); |
| } |
| |
| void *chip_dequeue_tail(void) |
| { |
| return dequeue_tail(&chip_q_head); |
| } |
| |
| 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); |
| } |
| |
| 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; |
| } |
| |
| static struct chip *get_chip(char *path) |
| { |
| struct chip *h = &chip_header; |
| |
| while (h->next) { |
| int result = strcmp(path, h->next->name); |
| if (result == 0) |
| return h->next; |
| |
| if (result < 0) |
| break; |
| |
| h = h->next; |
| } |
| |
| struct chip *new_chip = S_ALLOC(sizeof(struct chip)); |
| new_chip->next = h->next; |
| h->next = new_chip; |
| |
| new_chip->chiph_exists = 1; |
| new_chip->name = path; |
| new_chip->name_underscore = translate_name(path, UNSLASH); |
| |
| struct stat st; |
| char *chip_h = S_ALLOC(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; |
| |
| free(chip_h); |
| |
| return new_chip; |
| } |
| |
| struct chip_instance *new_chip_instance(char *path) |
| { |
| struct chip *chip = get_chip(path); |
| struct chip_instance *instance = S_ALLOC(sizeof(*instance)); |
| |
| instance->id = ++count; |
| instance->chip = chip; |
| instance->next = chip->instance; |
| chip->instance = instance; |
| |
| return instance; |
| } |
| |
| static void delete_chip_instance(struct chip_instance *ins) |
| { |
| |
| if (ins->ref_count == 0) { |
| printf("ERROR: ref count for chip instance is zero!!\n"); |
| exit(1); |
| } |
| |
| if (--ins->ref_count) |
| return; |
| |
| struct chip *c = ins->chip; |
| |
| /* Get pointer to first instance of the chip. */ |
| struct chip_instance *i = c->instance; |
| |
| /* |
| * If chip instance to be deleted is the first instance, then update |
| * instance pointer of the chip as well. |
| */ |
| if (i == ins) { |
| c->instance = ins->next; |
| free(ins); |
| return; |
| } |
| |
| /* |
| * Loop through the instances list of the chip to find and remove the |
| * given instance. |
| */ |
| while (1) { |
| if (i == NULL) { |
| printf("ERROR: chip instance not found!\n"); |
| exit(1); |
| } |
| |
| if (i->next != ins) { |
| i = i->next; |
| continue; |
| } |
| |
| i->next = ins->next; |
| break; |
| } |
| |
| free(ins); |
| } |
| |
| /* |
| * Allocate a new bus for the provided device. |
| * - If this is the first bus being allocated under this device, then its id |
| * is set to 0 and bus and last_bus are pointed to the newly allocated bus. |
| * - If this is not the first bus under this device, then its id is set to 1 |
| * plus the id of last bus and newly allocated bus is added to the list of |
| * buses under the device. last_bus is updated to point to the newly |
| * allocated bus. |
| */ |
| static void alloc_bus(struct device *dev) |
| { |
| struct bus *bus = S_ALLOC(sizeof(*bus)); |
| |
| bus->dev = dev; |
| |
| if (dev->last_bus == NULL) { |
| bus->id = 0; |
| dev->bus = bus; |
| } else { |
| bus->id = dev->last_bus->id + 1; |
| dev->last_bus->next_bus = bus; |
| } |
| |
| dev->last_bus = bus; |
| } |
| |
| /* |
| * Allocate a new device under the given parent. This function allocates a new |
| * device structure under the provided parent bus and allocates a bus structure |
| * under the newly allocated device. |
| */ |
| static struct device *alloc_dev(struct bus *parent) |
| { |
| struct device *dev = S_ALLOC(sizeof(*dev)); |
| |
| dev->id = ++count; |
| dev->parent = parent; |
| dev->subsystem_vendor = -1; |
| dev->subsystem_device = -1; |
| |
| alloc_bus(dev); |
| |
| return dev; |
| } |
| |
| /* |
| * This function scans the children of given bus to see if any device matches |
| * the new device that is requested. |
| * |
| * Returns pointer to the node if found, else NULL. |
| */ |
| static struct device *get_dev(struct bus *parent, int path_a, int path_b, |
| int bustype, struct chip_instance *chip_instance) |
| { |
| struct device *child = parent->children; |
| |
| while (child) { |
| if ((child->path_a == path_a) && (child->path_b == path_b) && |
| (child->bustype == bustype) && |
| (child->chip_instance == chip_instance)) |
| return child; |
| |
| child = child->sibling; |
| } |
| |
| return NULL; |
| } |
| |
| /* |
| * Add given node as child of the provided parent. If this is the first child of |
| * the parent, update parent->children pointer as well. |
| */ |
| static void set_new_child(struct bus *parent, struct device *child) |
| { |
| struct device *c = parent->children; |
| if (c) { |
| while (c->sibling) |
| c = c->sibling; |
| c->sibling = child; |
| } else |
| parent->children = child; |
| |
| child->sibling = NULL; |
| child->parent = parent; |
| } |
| |
| struct device *new_device(struct bus *parent, |
| struct chip_instance *chip_instance, |
| const int bustype, const char *devnum, |
| int status) |
| { |
| char *tmp; |
| int path_a; |
| int path_b = 0; |
| struct device *new_d; |
| |
| path_a = strtol(devnum, &tmp, 16); |
| if (*tmp == '.') { |
| tmp++; |
| path_b = strtol(tmp, NULL, 16); |
| } |
| |
| /* If device is found under parent, no need to allocate new device. */ |
| new_d = get_dev(parent, path_a, path_b, bustype, chip_instance); |
| if (new_d) { |
| alloc_bus(new_d); |
| return new_d; |
| } |
| |
| new_d = alloc_dev(parent); |
| |
| new_d->bustype = bustype; |
| |
| new_d->path_a = path_a; |
| new_d->path_b = path_b; |
| |
| char *name = S_ALLOC(10); |
| sprintf(name, "_dev%d", new_d->id); |
| new_d->name = name; |
| |
| new_d->enabled = status & 0x01; |
| new_d->hidden = (status >> 1) & 0x01; |
| new_d->chip_instance = chip_instance; |
| chip_instance->ref_count++; |
| |
| set_new_child(parent, new_d); |
| |
| switch (bustype) { |
| 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; |
| |
| case USB: |
| new_d->path = ".type=DEVICE_PATH_USB,{.usb={ .port_type = %d, .port_id = %d }}"; |
| break; |
| |
| case MMIO: |
| new_d->path = ".type=DEVICE_PATH_MMIO,{.mmio={ .addr = 0x%x }}"; |
| break; |
| } |
| |
| return new_d; |
| } |
| |
| static void new_resource(struct device *dev, int type, int index, int base) |
| { |
| struct resource *r = S_ALLOC(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; |
| } |
| } |
| |
| void add_resource(struct bus *bus, int type, int index, int base) |
| { |
| new_resource(bus->dev, type, index, base); |
| } |
| |
| void add_register(struct chip_instance *chip_instance, char *name, char *val) |
| { |
| struct reg *r = S_ALLOC(sizeof(struct reg)); |
| |
| r->key = name; |
| r->value = val; |
| if (chip_instance->reg) { |
| struct reg *head = chip_instance->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; |
| chip_instance->reg = r; |
| } else { |
| while ((head->next) |
| && (strcmp(head->next->key, r->key) < 0)) |
| head = head->next; |
| r->next = head->next; |
| head->next = r; |
| } |
| } else { |
| chip_instance->reg = r; |
| } |
| } |
| |
| void add_slot_desc(struct bus *bus, char *type, char *length, char *designation, |
| char *data_width) |
| { |
| struct device *dev = bus->dev; |
| |
| if (dev->bustype != PCI && dev->bustype != DOMAIN) { |
| printf("ERROR: 'slot_type' only allowed for PCI devices\n"); |
| exit(1); |
| } |
| |
| dev->smbios_slot_type = type; |
| dev->smbios_slot_length = length; |
| dev->smbios_slot_data_width = data_width; |
| dev->smbios_slot_designation = designation; |
| } |
| |
| void add_pci_subsystem_ids(struct bus *bus, int vendor, int device, |
| int inherit) |
| { |
| struct device *dev = bus->dev; |
| |
| 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 bus *bus, int apicid, const char *_srcpin, |
| int irqpin) |
| { |
| int srcpin; |
| struct device *dev = bus->dev; |
| |
| 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 int dev_has_children(struct device *dev) |
| { |
| struct bus *bus = dev->bus; |
| |
| while (bus) { |
| if (bus->children) |
| return 1; |
| bus = bus->next_bus; |
| } |
| |
| return 0; |
| } |
| |
| static void pass0(FILE *fil, struct device *ptr, struct device *next) |
| { |
| if (ptr == &base_root_dev) { |
| fprintf(fil, "STORAGE struct bus %s_links[];\n", |
| ptr->name); |
| return; |
| } |
| |
| fprintf(fil, "STORAGE struct device %s;\n", ptr->name); |
| if (ptr->res) |
| fprintf(fil, "STORAGE struct resource %s_res[];\n", |
| ptr->name); |
| if (dev_has_children(ptr)) |
| fprintf(fil, "STORAGE struct bus %s_links[];\n", |
| ptr->name); |
| |
| if (next) |
| return; |
| |
| fprintf(fil, |
| "DEVTREE_CONST struct device * DEVTREE_CONST last_dev = &%s;\n", |
| ptr->name); |
| } |
| |
| static void emit_resources(FILE *fil, struct device *ptr) |
| { |
| if (ptr->res == NULL) |
| return; |
| |
| int i = 1; |
| fprintf(fil, "STORAGE 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"); |
| } |
| |
| static void emit_bus(FILE *fil, struct bus *bus) |
| { |
| fprintf(fil, "\t\t[%d] = {\n", bus->id); |
| fprintf(fil, "\t\t\t.link_num = %d,\n", bus->id); |
| fprintf(fil, "\t\t\t.dev = &%s,\n", bus->dev->name); |
| if (bus->children) |
| fprintf(fil, "\t\t\t.children = &%s,\n", bus->children->name); |
| |
| if (bus->next_bus) |
| fprintf(fil, "\t\t\t.next=&%s_links[%d],\n", bus->dev->name, |
| bus->id + 1); |
| else |
| fprintf(fil, "\t\t\t.next = NULL,\n"); |
| fprintf(fil, "\t\t},\n"); |
| } |
| |
| static void emit_dev_links(FILE *fil, struct device *ptr) |
| { |
| fprintf(fil, "STORAGE struct bus %s_links[] = {\n", |
| ptr->name); |
| |
| struct bus *bus = ptr->bus; |
| |
| while (bus) { |
| emit_bus(fil, bus); |
| bus = bus->next_bus; |
| } |
| |
| fprintf(fil, "\t};\n"); |
| } |
| |
| static void pass1(FILE *fil, struct device *ptr, struct device *next) |
| { |
| int pin; |
| struct chip_instance *chip_ins = ptr->chip_instance; |
| int has_children = dev_has_children(ptr); |
| |
| if (ptr == &base_root_dev) |
| fprintf(fil, "DEVTREE_CONST struct device %s = {\n", ptr->name); |
| else |
| fprintf(fil, "STORAGE struct device %s = {\n", ptr->name); |
| |
| fprintf(fil, "#if !DEVTREE_EARLY\n"); |
| |
| /* |
| * ops field is set to default_dev_ops_root only for the root |
| * device. For all other devices, it is set by the driver at runtime. |
| */ |
| if (ptr == &base_root_dev) |
| fprintf(fil, "\t.ops = &default_dev_ops_root,\n"); |
| else |
| fprintf(fil, "\t.ops = NULL,\n"); |
| fprintf(fil, "#endif\n"); |
| fprintf(fil, "\t.bus = &%s_links[%d],\n", ptr->parent->dev->name, |
| ptr->parent->id); |
| 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.hidden = %d,\n", ptr->hidden); |
| fprintf(fil, "\t.on_mainboard = 1,\n"); |
| if (ptr->subsystem_vendor > 0) |
| fprintf(fil, "\t.subsystem_vendor = 0x%04x,\n", |
| ptr->subsystem_vendor); |
| |
| if (ptr->subsystem_device > 0) |
| fprintf(fil, "\t.subsystem_device = 0x%04x,\n", |
| ptr->subsystem_device); |
| |
| if (ptr->res) { |
| fprintf(fil, "\t.resource_list = &%s_res[0],\n", |
| ptr->name); |
| } |
| if (has_children) |
| 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, "#if !DEVTREE_EARLY\n"); |
| 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); |
| } |
| fprintf(fil, "\t.chip_ops = &%s_ops,\n", |
| chip_ins->chip->name_underscore); |
| if (chip_ins == &mainboard_instance) |
| fprintf(fil, "\t.name = mainboard_name,\n"); |
| fprintf(fil, "#endif\n"); |
| if (chip_ins->chip->chiph_exists) |
| fprintf(fil, "\t.chip_info = &%s_info_%d,\n", |
| chip_ins->chip->name_underscore, chip_ins->id); |
| if (next) |
| fprintf(fil, "\t.next=&%s,\n", next->name); |
| if (ptr->smbios_slot_type || ptr->smbios_slot_data_width || |
| ptr->smbios_slot_designation || ptr->smbios_slot_length) { |
| fprintf(fil, "#if !DEVTREE_EARLY\n"); |
| fprintf(fil, "#if CONFIG(GENERATE_SMBIOS_TABLES)\n"); |
| } |
| /* SMBIOS types start at 1, if zero it hasn't been set */ |
| if (ptr->smbios_slot_type) |
| fprintf(fil, "\t.smbios_slot_type = %s,\n", |
| ptr->smbios_slot_type); |
| if (ptr->smbios_slot_data_width) |
| fprintf(fil, "\t.smbios_slot_data_width = %s,\n", |
| ptr->smbios_slot_data_width); |
| if (ptr->smbios_slot_designation) |
| fprintf(fil, "\t.smbios_slot_designation = \"%s\",\n", |
| ptr->smbios_slot_designation); |
| if (ptr->smbios_slot_length) |
| fprintf(fil, "\t.smbios_slot_length = %s,\n", |
| ptr->smbios_slot_length); |
| if (ptr->smbios_slot_type || ptr->smbios_slot_data_width || |
| ptr->smbios_slot_designation || ptr->smbios_slot_length) { |
| fprintf(fil, "#endif\n"); |
| fprintf(fil, "#endif\n"); |
| } |
| fprintf(fil, "};\n"); |
| |
| emit_resources(fil, ptr); |
| |
| if (has_children) |
| emit_dev_links(fil, ptr); |
| } |
| |
| static void expose_device_names(FILE *fil, struct device *ptr, struct device *next) |
| { |
| /* Only devices on root bus here. */ |
| if (ptr->bustype == PCI && ptr->parent->dev->bustype == DOMAIN) |
| fprintf(fil, "DEVTREE_CONST struct device *DEVTREE_CONST __pci_0_%02x_%d = &%s;\n", |
| ptr->path_a, ptr->path_b, ptr->name); |
| |
| if (ptr->bustype == PNP) |
| fprintf(fil, "DEVTREE_CONST struct device *DEVTREE_CONST __pnp_%04x_%02x = &%s;\n", |
| ptr->path_a, ptr->path_b, ptr->name); |
| } |
| |
| static void add_siblings_to_queue(struct queue_entry **bfs_q_head, |
| struct device *d) |
| { |
| while (d) { |
| enqueue_tail(bfs_q_head, d); |
| d = d->sibling; |
| } |
| } |
| |
| static void add_children_to_queue(struct queue_entry **bfs_q_head, |
| struct device *d) |
| { |
| struct bus *bus = d->bus; |
| |
| while (bus) { |
| if (bus->children) |
| add_siblings_to_queue(bfs_q_head, bus->children); |
| bus = bus->next_bus; |
| } |
| } |
| |
| static void walk_device_tree(FILE *fil, struct device *ptr, |
| void (*func)(FILE *, struct device *, |
| struct device *)) |
| { |
| struct queue_entry *bfs_q_head = NULL; |
| |
| enqueue_tail(&bfs_q_head, ptr); |
| |
| while ((ptr = dequeue_head(&bfs_q_head))) { |
| add_children_to_queue(&bfs_q_head, ptr); |
| func(fil, ptr, peek_queue_head(bfs_q_head)); |
| } |
| } |
| |
| static void emit_chip_headers(FILE *fil, struct chip *chip) |
| { |
| struct chip *tmp = chip; |
| |
| fprintf(fil, "#include <device/device.h>\n"); |
| fprintf(fil, "#include <device/pci.h>\n"); |
| |
| while (chip) { |
| if (chip->chiph_exists) |
| fprintf(fil, "#include \"%s/chip.h\"\n", chip->name); |
| chip = chip->next; |
| } |
| fprintf(fil, "\n#if !DEVTREE_EARLY\n"); |
| fprintf(fil, |
| "__attribute__((weak)) struct chip_operations mainboard_ops = {};\n"); |
| |
| chip = tmp; |
| while (chip) { |
| fprintf(fil, |
| "__attribute__((weak)) struct chip_operations %s_ops = {};\n", |
| chip->name_underscore); |
| chip = chip->next; |
| } |
| fprintf(fil, "#endif\n"); |
| } |
| |
| static void emit_chip_instance(FILE *fil, struct chip_instance *instance) |
| { |
| fprintf(fil, "STORAGE struct %s_config %s_info_%d = {", |
| instance->chip->name_underscore, |
| instance->chip->name_underscore, |
| instance->id); |
| |
| if (instance->reg) { |
| fprintf(fil, "\n"); |
| struct reg *r = instance->reg; |
| while (r) { |
| fprintf(fil, "\t.%s = %s,\n", r->key, r->value); |
| r = r->next; |
| } |
| } |
| fprintf(fil, "};\n\n"); |
| } |
| |
| static void emit_chips(FILE *fil) |
| { |
| struct chip *chip = chip_header.next; |
| struct chip_instance *instance; |
| |
| emit_chip_headers(fil, chip); |
| |
| fprintf(fil, "\n#define STORAGE static __unused DEVTREE_CONST\n\n"); |
| |
| for (; chip; chip = chip->next) { |
| if (!chip->chiph_exists) |
| continue; |
| |
| instance = chip->instance; |
| while (instance) { |
| emit_chip_instance(fil, instance); |
| instance = instance->next; |
| } |
| } |
| } |
| |
| static void inherit_subsystem_ids(FILE *file, struct device *dev, |
| struct device *next) |
| { |
| 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->parent->dev != p; p = p->parent->dev) { |
| |
| 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 [override_devicetree_file]\n"); |
| exit(1); |
| } |
| |
| enum { |
| DEVICEFILE_ARG = 1, |
| OUTPUTFILE_ARG, |
| OVERRIDE_DEVICEFILE_ARG, |
| }; |
| |
| #define MANDATORY_ARG_COUNT 3 |
| #define OPTIONAL_ARG_COUNT 1 |
| #define TOTAL_ARG_COUNT (MANDATORY_ARG_COUNT + OPTIONAL_ARG_COUNT) |
| |
| static void parse_devicetree(const char *file, struct bus *parent) |
| { |
| FILE *filec = fopen(file, "r"); |
| if (!filec) { |
| perror(NULL); |
| exit(1); |
| } |
| |
| yyrestart(filec); |
| |
| root_parent = parent; |
| linenum = 0; |
| |
| yyparse(); |
| |
| fclose(filec); |
| } |
| |
| /* |
| * Match device nodes from base and override tree to see if they are the same |
| * node. |
| */ |
| static int device_match(struct device *a, struct device *b) |
| { |
| return ((a->path_a == b->path_a) && |
| (a->path_b == b->path_b) && |
| (a->bustype == b->bustype) && |
| (a->chip_instance->chip == |
| b->chip_instance->chip)); |
| } |
| |
| /* |
| * Walk through the override subtree in breadth-first manner starting at node to |
| * see if chip_instance pointer of the node is same as chip_instance pointer of |
| * override parent that is passed into the function. If yes, then update the |
| * chip_instance pointer of the node to chip_instance pointer of the base |
| * parent. |
| */ |
| static void update_chip_pointers(struct device *node, |
| struct chip_instance *base_parent_ci, |
| struct chip_instance *override_parent_ci) |
| { |
| struct queue_entry *q_head = NULL; |
| |
| enqueue_tail(&q_head, node); |
| |
| while ((node = dequeue_head(&q_head))) { |
| if (node->chip_instance != override_parent_ci) |
| continue; |
| node->chip_instance = base_parent_ci; |
| add_children_to_queue(&q_head, node); |
| } |
| } |
| |
| /* |
| * Add resource to device. If resource is already present, then update its base |
| * and index. If not, then add a new resource to the device. |
| */ |
| static void update_resource(struct device *dev, struct resource *res) |
| { |
| struct resource *base_res = dev->res; |
| |
| while (base_res) { |
| if (base_res->type == res->type) { |
| base_res->index = res->index; |
| base_res->base = res->base; |
| return; |
| } |
| base_res = base_res->next; |
| } |
| |
| new_resource(dev, res->type, res->index, res->base); |
| } |
| |
| /* |
| * Add register to chip instance. If register is already present, then update |
| * its value. If not, then add a new register to the chip instance. |
| */ |
| static void update_register(struct chip_instance *c, struct reg *reg) |
| { |
| struct reg *base_reg = c->reg; |
| |
| while (base_reg) { |
| if (!strcmp(base_reg->key, reg->key)) { |
| base_reg->value = reg->value; |
| return; |
| } |
| base_reg = base_reg->next; |
| } |
| |
| add_register(c, reg->key, reg->value); |
| } |
| |
| static void override_devicetree(struct bus *base_parent, |
| struct bus *override_parent); |
| |
| /* |
| * Update the base device properties using the properties of override device. In |
| * addition to that, call override_devicetree for all the buses under the |
| * override device. |
| * |
| * Override Rules: |
| * +--------------------+--------------------------------------------+ |
| * | | | |
| * |struct device member| Rule | |
| * | | | |
| * +-----------------------------------------------------------------+ |
| * | | | |
| * | id | Unchanged. This is used to generate device | |
| * | | structure name in static.c. So, no need to | |
| * | | override. | |
| * | | | |
| * +-----------------------------------------------------------------+ |
| * | | | |
| * | enabled | Copy enabled state from override device. | |
| * | | This allows variants to override device | |
| * | | state. | |
| * | | | |
| * +-----------------------------------------------------------------+ |
| * | | | |
| * | subsystem_vendor | Copy from override device only if any one | |
| * | subsystem_device | of the ids is non-zero. | |
| * | | | |
| * +-----------------------------------------------------------------+ |
| * | | | |
| * | inherit_subsystem | Copy from override device only if it is | |
| * | | non-zero. This allows variant to only | |
| * | | enable inherit flag for a device. | |
| * | | | |
| * +-----------------------------------------------------------------+ |
| * | | | |
| * | path | Unchanged since these are same for both | |
| * | path_a | base and override device (Used for | |
| * | path_b | matching devices). | |
| * | | | |
| * +-----------------------------------------------------------------+ |
| * | | | |
| * | bustype | Unchanged since this is same for both base | |
| * | | and override device (User for matching | |
| * | | devices). | |
| * | | | |
| * +-----------------------------------------------------------------+ |
| * | | | |
| * | pci_irq_info | Unchanged. | |
| * | | | |
| * +-----------------------------------------------------------------+ |
| * | | | |
| * | parent | Unchanged. This is meaningful only within | |
| * | sibling | the parse tree, hence not being copied. | |
| * | | | |
| * +-----------------------------------------------------------------+ |
| * | | | |
| * | res | Each resource that is present in override | |
| * | | device is copied over to base device: | |
| * | | 1. If resource of same type is present in | |
| * | | base device, then index and base of the | |
| * | | resource is copied. | |
| * | | 2. If not, then a new resource is allocated| |
| * | | under the base device using type, index | |
| * | | and base from override res. | |
| * | | | |
| * +-----------------------------------------------------------------+ |
| * | | | |
| * | chip_instance | Each register of chip_instance is copied | |
| * | | over from override device to base device: | |
| * | | 1. If register with same key is present in | |
| * | | base device, then value of the register | |
| * | | is copied. | |
| * | | 2. If not, then a new register is allocated| |
| * | | under the base chip_instance using key | |
| * | | and value from override register. | |
| * | | | |
| * +-----------------------------------------------------------------+ |
| * | | | |
| * | bus | Recursively call override_devicetree on | |
| * | last_bus | each bus of override device. It is assumed | |
| * | | that bus with id X under base device | |
| * | | to bus with id X under override device. If | |
| * | | override device has more buses than base | |
| * | | device, then new buses are allocated under | |
| * | | base device. | |
| * | | | |
| * +-----------------------------------------------------------------+ |
| */ |
| static void update_device(struct device *base_dev, struct device *override_dev) |
| { |
| /* |
| * Copy the enabled state of override device to base device. This allows |
| * override tree to enable or disable a particular device. |
| */ |
| base_dev->enabled = override_dev->enabled; |
| |
| /* |
| * Copy subsystem vendor and device ids from override device to base |
| * device only if the ids are non-zero in override device. Else, honor |
| * the values in base device. |
| */ |
| if (override_dev->subsystem_vendor || |
| override_dev->subsystem_device) { |
| base_dev->subsystem_vendor = override_dev->subsystem_vendor; |
| base_dev->subsystem_device = override_dev->subsystem_device; |
| } |
| |
| /* |
| * Copy value of inherity_subsystem from override device to base device |
| * only if it is non-zero in override device. This allows override |
| * tree to only enable inhert flag for a device. |
| */ |
| if (override_dev->inherit_subsystem) |
| base_dev->inherit_subsystem = override_dev->inherit_subsystem; |
| |
| /* |
| * Copy resources of override device to base device. |
| * 1. If resource is already present in base device, then index and base |
| * of the resource will be copied over. |
| * 2. If resource is not already present in base device, a new resource |
| * will be allocated. |
| */ |
| struct resource *res = override_dev->res; |
| while (res) { |
| update_resource(base_dev, res); |
| res = res->next; |
| } |
| |
| /* |
| * Copy registers of override chip instance to base chip instance. |
| * 1. If register key is already present in base chip instance, then |
| * value for the register is copied over. |
| * 2. If register key is not already present in base chip instance, then |
| * a new register will be allocated. |
| */ |
| struct reg *reg = override_dev->chip_instance->reg; |
| while (reg) { |
| update_register(base_dev->chip_instance, reg); |
| reg = reg->next; |
| } |
| |
| /* |
| * Now that the device properties are all copied over, look at each bus |
| * of the override device and run override_devicetree in a recursive |
| * manner. The assumption here is that first bus of override device |
| * corresponds to first bus of base device and so on. If base device has |
| * lesser buses than override tree, then new buses are allocated for it. |
| */ |
| struct bus *override_bus = override_dev->bus; |
| struct bus *base_bus = base_dev->bus; |
| |
| while (override_bus) { |
| |
| /* |
| * If we have more buses in override tree device, then allocate |
| * a new bus for the base tree device as well. |
| */ |
| if (!base_bus) { |
| alloc_bus(base_dev); |
| base_bus = base_dev->last_bus; |
| } |
| |
| override_devicetree(base_dev->bus, override_dev->bus); |
| |
| override_bus = override_bus->next_bus; |
| base_bus = base_bus->next_bus; |
| } |
| |
| delete_chip_instance(override_dev->chip_instance); |
| override_dev->chip_instance = NULL; |
| } |
| |
| /* |
| * Perform copy of device and properties from override parent to base parent. |
| * This function walks through the override tree in a depth-first manner |
| * performing following actions: |
| * 1. If matching device is found in base tree, then copy the properties of |
| * override device to base tree device. Call override_devicetree recursively on |
| * the bus of override device. |
| * 2. If matching device is not found in base tree, then set override tree |
| * device as new child of base_parent and update the chip pointers in override |
| * device subtree to ensure the nodes do not point to override tree chip |
| * instance. |
| */ |
| static void override_devicetree(struct bus *base_parent, |
| struct bus *override_parent) |
| { |
| struct device *base_child; |
| struct device *override_child = override_parent->children; |
| struct device *next_child; |
| |
| while (override_child) { |
| |
| /* Look for a matching device in base tree. */ |
| for (base_child = base_parent->children; |
| base_child; base_child = base_child->sibling) { |
| if (device_match(base_child, override_child)) |
| break; |
| } |
| |
| next_child = override_child->sibling; |
| |
| /* |
| * If matching device is found, copy properties of |
| * override_child to base_child. |
| */ |
| if (base_child) |
| update_device(base_child, override_child); |
| else { |
| /* |
| * If matching device is not found, set override_child |
| * as a new child of base_parent. |
| */ |
| set_new_child(base_parent, override_child); |
| /* |
| * Ensure all nodes in override tree pointing to |
| * override parent chip_instance now point to base |
| * parent chip_instance. |
| */ |
| update_chip_pointers(override_child, |
| base_parent->dev->chip_instance, |
| override_parent->dev->chip_instance); |
| } |
| |
| override_child = next_child; |
| } |
| } |
| |
| int main(int argc, char **argv) |
| { |
| if ((argc < MANDATORY_ARG_COUNT) || (argc > TOTAL_ARG_COUNT)) |
| usage(); |
| |
| const char *base_devtree = argv[DEVICEFILE_ARG]; |
| const char *outputc = argv[OUTPUTFILE_ARG]; |
| const char *override_devtree; |
| |
| parse_devicetree(base_devtree, &base_root_bus); |
| |
| if (argc == TOTAL_ARG_COUNT) { |
| override_devtree = argv[OVERRIDE_DEVICEFILE_ARG]; |
| parse_devicetree(override_devtree, &override_root_bus); |
| |
| if (!dev_has_children(&override_root_dev)) { |
| fprintf(stderr, "ERROR: Override tree needs at least one device!\n"); |
| exit(1); |
| } |
| |
| override_devicetree(&base_root_bus, &override_root_bus); |
| } |
| |
| FILE *autogen = fopen(outputc, "w"); |
| if (!autogen) { |
| fprintf(stderr, "Could not open file '%s' for writing: ", |
| outputc); |
| perror(NULL); |
| exit(1); |
| } |
| |
| emit_chips(autogen); |
| |
| walk_device_tree(autogen, &base_root_dev, inherit_subsystem_ids); |
| fprintf(autogen, "\n/* pass 0 */\n"); |
| walk_device_tree(autogen, &base_root_dev, pass0); |
| fprintf(autogen, "\n/* pass 1 */\n"); |
| walk_device_tree(autogen, &base_root_dev, pass1); |
| |
| /* Expose static devicenames to global namespace. */ |
| fprintf(autogen, "\n/* expose_device_names */\n"); |
| walk_device_tree(autogen, &base_root_dev, expose_device_names); |
| |
| fclose(autogen); |
| |
| return 0; |
| } |