| /* sconfig, coreboot device tree compiler */ |
| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <assert.h> |
| #include <ctype.h> |
| #include <getopt.h> |
| #include <inttypes.h> |
| #include <libgen.h> |
| /* stat.h needs to be included before commonlib/helpers.h to avoid errors.*/ |
| #include <sys/stat.h> |
| #include <commonlib/helpers.h> |
| #include <stdint.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; |
| |
| 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 chipset tree. */ |
| static struct device chipset_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", |
| .chip_instance = &mainboard_instance, |
| .path = " .type = DEVICE_PATH_ROOT ", |
| .parent = &base_root_bus, |
| .enabled = 1, |
| .bus = &base_root_bus, |
| }; |
| |
| static struct bus chipset_root_bus = { |
| .id = 0, |
| .dev = &chipset_root_dev, |
| }; |
| |
| static struct device chipset_root_dev = { |
| .name = "chipset_root", |
| .chip_instance = &mainboard_instance, |
| .path = " .type = DEVICE_PATH_ROOT ", |
| .parent = &chipset_root_bus, |
| .enabled = 1, |
| .bus = &chipset_root_bus, |
| }; |
| |
| static struct bus override_root_bus = { |
| .id = 0, |
| .dev = &override_root_dev, |
| }; |
| |
| static struct device override_root_dev = { |
| .name = "override_root", |
| /* |
| * 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, |
| }; |
| |
| /* 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->chip = chip; |
| instance->next = chip->instance; |
| chip->instance = instance; |
| |
| return instance; |
| } |
| |
| /* List of fw_config fields added during parsing. */ |
| static struct fw_config_field *fw_config_fields; |
| |
| static struct fw_config_option *find_fw_config_option(struct fw_config_field *field, |
| const char *name) |
| { |
| struct fw_config_option *option = field->options; |
| |
| while (option && option->name) { |
| if (!strcmp(option->name, name)) |
| return option; |
| option = option->next; |
| } |
| return NULL; |
| } |
| |
| static struct fw_config_field *find_fw_config_field(const char *name) |
| { |
| struct fw_config_field *field = fw_config_fields; |
| |
| while (field && field->name) { |
| if (!strcmp(field->name, name)) |
| return field; |
| field = field->next; |
| } |
| return NULL; |
| } |
| |
| struct fw_config_field *get_fw_config_field(const char *name) |
| { |
| struct fw_config_field *field = find_fw_config_field(name); |
| |
| /* Fail if the field does not exist, new fields must be added with a mask. */ |
| if (!field) { |
| printf("ERROR: fw_config field not found: %s\n", name); |
| exit(1); |
| } |
| return field; |
| } |
| |
| static void append_fw_config_field(struct fw_config_field *add) |
| { |
| struct fw_config_field *field = fw_config_fields; |
| |
| if (!fw_config_fields) { |
| fw_config_fields = add; |
| } else { |
| while (field && field->next) |
| field = field->next; |
| field->next = add; |
| } |
| } |
| |
| void append_fw_config_bits(struct fw_config_field_bits **bits, |
| unsigned int start_bit, unsigned int end_bit) |
| { |
| struct fw_config_field_bits *new_bits = S_ALLOC(sizeof(*new_bits)); |
| new_bits->start_bit = start_bit; |
| new_bits->end_bit = end_bit; |
| new_bits->next = NULL; |
| |
| if (*bits == NULL) { |
| *bits = new_bits; |
| return; |
| } |
| |
| struct fw_config_field_bits *tmp = *bits; |
| while (tmp->next) |
| tmp = tmp->next; |
| |
| tmp->next = new_bits; |
| } |
| |
| int fw_config_masks_overlap(struct fw_config_field *existing, |
| unsigned int start_bit, unsigned int end_bit) |
| { |
| struct fw_config_field_bits *bits = existing->bits; |
| while (bits) { |
| if (start_bit <= bits->end_bit && end_bit >= bits->start_bit) { |
| printf("ERROR: fw_config field [%u-%u] overlaps %s[%u-%u]\n", |
| start_bit, end_bit, |
| existing->name, bits->start_bit, bits->end_bit); |
| return 1; |
| } |
| bits = bits->next; |
| } |
| |
| return 0; |
| } |
| |
| struct fw_config_field *new_fw_config_field(const char *name, struct fw_config_field_bits *bits) |
| { |
| struct fw_config_field *field = find_fw_config_field(name); |
| struct fw_config_field_bits *tmp; |
| |
| /* Don't allow re-defining a field, only adding new fields. */ |
| if (field) { |
| printf("ERROR: fw_config field %s already exists\n", name); |
| exit(1); |
| } |
| |
| /* Check that each field is within 64 bits. */ |
| tmp = bits; |
| while (tmp) { |
| if (tmp->start_bit > tmp->end_bit || tmp->end_bit > 63) { |
| printf("ERROR: fw_config field %s has invalid range %u-%u\n", name, |
| tmp->start_bit, tmp->end_bit); |
| exit(1); |
| } |
| |
| /* Check for overlap with an existing field. */ |
| struct fw_config_field *existing = fw_config_fields; |
| while (existing) { |
| if (fw_config_masks_overlap(existing, tmp->start_bit, tmp->end_bit)) |
| exit(1); |
| existing = existing->next; |
| } |
| |
| tmp = tmp->next; |
| } |
| |
| field = S_ALLOC(sizeof(*field)); |
| field->name = name; |
| field->bits = bits; |
| append_fw_config_field(field); |
| |
| return field; |
| } |
| |
| static void append_fw_config_option_to_field(struct fw_config_field *field, |
| struct fw_config_option *add) |
| { |
| struct fw_config_option *option = field->options; |
| |
| if (!option) { |
| field->options = add; |
| } else { |
| while (option && option->next) |
| option = option->next; |
| option->next = add; |
| } |
| } |
| |
| static uint64_t calc_max_field_value(const struct fw_config_field *field) |
| { |
| unsigned int bit_count = 0; |
| |
| const struct fw_config_field_bits *bits = field->bits; |
| while (bits) { |
| bit_count += 1 + bits->end_bit - bits->start_bit; |
| bits = bits->next; |
| }; |
| |
| return (1ull << bit_count) - 1ull; |
| } |
| |
| void add_fw_config_option(struct fw_config_field *field, const char *name, uint64_t value) |
| { |
| struct fw_config_option *option; |
| |
| /* Check that option value fits within field mask. */ |
| uint64_t field_max_value = calc_max_field_value(field); |
| if (value > field_max_value) { |
| printf("ERROR: fw_config option %s:%s value %" PRIx64 " larger than field max %" |
| PRIx64 "\n", |
| field->name, name, value, field_max_value); |
| exit(1); |
| } |
| |
| /* Check for existing option with this name or value. */ |
| option = field->options; |
| while (option) { |
| if (!strcmp(option->name, name)) { |
| printf("ERROR: fw_config option name %s:%s already exists\n", |
| field->name, name); |
| exit(1); |
| } |
| /* Compare values. */ |
| if (value == option->value) { |
| printf("ERROR: fw_config option %s:%s[%" PRIx64 "] redefined as %s\n", |
| field->name, option->name, value, name); |
| exit(1); |
| } |
| option = option->next; |
| } |
| |
| option = S_ALLOC(sizeof(*option)); |
| option->name = name; |
| option->value = value; |
| |
| /* Add option to the current field. */ |
| append_fw_config_option_to_field(field, option); |
| } |
| |
| static void append_fw_config_probe_to_dev(struct device *dev, struct fw_config_probe *add) |
| { |
| struct fw_config_probe *probe = dev->probe; |
| |
| if (!probe) { |
| dev->probe = add; |
| } else { |
| while (probe && probe->next) |
| probe = probe->next; |
| probe->next = add; |
| } |
| } |
| |
| static int check_probe_exists(struct fw_config_probe *probe, const char *field, |
| const char *option) |
| { |
| while (probe) { |
| if (!strcmp(probe->field, field) && !strcmp(probe->option, option)) { |
| return 1; |
| } |
| probe = probe->next; |
| } |
| |
| return 0; |
| } |
| |
| void add_fw_config_probe(struct bus *bus, const char *field, const char *option) |
| { |
| struct fw_config_probe *probe; |
| |
| if (check_probe_exists(bus->dev->probe, field, option)) { |
| printf("ERROR: fw_config probe %s:%s already exists\n", field, option); |
| exit(1); |
| } |
| |
| probe = S_ALLOC(sizeof(*probe)); |
| probe->field = field; |
| probe->option = option; |
| |
| append_fw_config_probe_to_dev(bus->dev, probe); |
| } |
| |
| static uint64_t compute_fw_config_mask(const struct fw_config_field_bits *bits) |
| { |
| uint64_t mask = 0; |
| |
| while (bits) { |
| /* Compute mask from start and end bit. */ |
| uint64_t tmp = ((1ull << (1ull + bits->end_bit - bits->start_bit)) - 1ull); |
| tmp <<= bits->start_bit; |
| mask |= tmp; |
| bits = bits->next; |
| } |
| |
| return mask; |
| } |
| |
| static unsigned int bits_width(const struct fw_config_field_bits *bits) |
| { |
| return 1 + bits->end_bit - bits->start_bit; |
| } |
| |
| static uint64_t calc_option_value(const struct fw_config_field *field, |
| const struct fw_config_option *option) |
| { |
| uint64_t value = 0; |
| uint64_t original = option->value; |
| |
| struct fw_config_field_bits *bits = field->bits; |
| while (bits) { |
| const unsigned int width = bits_width(bits); |
| const uint64_t orig_mask = (1ull << width) - 1ull; |
| const uint64_t orig = (original & orig_mask); |
| value |= (orig << bits->start_bit); |
| |
| original >>= width; |
| bits = bits->next; |
| } |
| |
| return value; |
| } |
| |
| static void emit_fw_config(FILE *fil) |
| { |
| struct fw_config_field *field = fw_config_fields; |
| |
| if (!field) |
| return; |
| |
| while (field) { |
| struct fw_config_option *option = field->options; |
| uint64_t mask; |
| |
| fprintf(fil, "#define FW_CONFIG_FIELD_%s_NAME \"%s\"\n", |
| field->name, field->name); |
| |
| mask = compute_fw_config_mask(field->bits); |
| fprintf(fil, "#define FW_CONFIG_FIELD_%s_MASK 0x%" PRIx64 "\n", |
| field->name, mask); |
| |
| while (option) { |
| const uint64_t value = calc_option_value(field, option); |
| fprintf(fil, "#define FW_CONFIG_FIELD_%s_OPTION_%s_NAME \"%s\"\n", |
| field->name, option->name, option->name); |
| fprintf(fil, "#define FW_CONFIG_FIELD_%s_OPTION_%s_VALUE 0x%" |
| PRIx64 "\n", field->name, option->name, value); |
| option = option->next; |
| } |
| |
| field = field->next; |
| } |
| |
| fprintf(fil, "\n"); |
| } |
| |
| static int emit_fw_config_probe(FILE *fil, struct device *dev) |
| { |
| struct fw_config_probe *probe = dev->probe; |
| |
| fprintf(fil, "STORAGE struct fw_config %s_probe_list[] = {\n", dev->name); |
| |
| while (probe) { |
| /* Find matching field. */ |
| struct fw_config_field *field; |
| struct fw_config_option *option; |
| uint64_t mask, value; |
| |
| field = find_fw_config_field(probe->field); |
| if (!field) { |
| printf("ERROR: fw_config_probe field %s not found\n", probe->field); |
| return -1; |
| } |
| option = find_fw_config_option(field, probe->option); |
| if (!option) { |
| printf("ERROR: fw_config_probe field %s option %s not found\n", |
| probe->field, probe->option); |
| return -1; |
| } |
| |
| /* Fill out the probe structure with values from emit_fw_config(). */ |
| fprintf(fil, "\t{\n"); |
| fprintf(fil, "\t\t.field_name = FW_CONFIG_FIELD_%s_NAME,\n", probe->field); |
| fprintf(fil, "\t\t.option_name = FW_CONFIG_FIELD_%s_OPTION_%s_NAME,\n", |
| probe->field, probe->option); |
| fprintf(fil, "\t\t.mask = FW_CONFIG_FIELD_%s_MASK,\n", probe->field); |
| fprintf(fil, "\t\t.value = FW_CONFIG_FIELD_%s_OPTION_%s_VALUE,\n", |
| probe->field, probe->option); |
| fprintf(fil, "\t},\n"); |
| |
| probe = probe->next; |
| } |
| |
| /* Add empty entry to mark end of list. */ |
| fprintf(fil, "\t{ }\n};\n"); |
| return 0; |
| } |
| |
| /* |
| * 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->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; |
| } |
| |
| static const struct device *find_alias(const struct device *const parent, |
| const char *const alias) |
| { |
| if (parent->alias && !strcmp(parent->alias, alias)) |
| return parent; |
| |
| const struct bus *bus; |
| for (bus = parent->bus; bus; bus = bus->next_bus) { |
| const struct device *child; |
| for (child = bus->children; child; child = child->sibling) { |
| const struct device *const ret = find_alias(child, alias); |
| if (ret) |
| return ret; |
| } |
| } |
| |
| return NULL; |
| } |
| |
| static struct device *new_device_with_path(struct bus *parent, |
| struct chip_instance *chip_instance, |
| const int bustype, int path_a, int path_b, |
| char *alias, int status) |
| { |
| struct device *new_d; |
| |
| /* 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; |
| new_d->alias = alias; |
| |
| new_d->enabled = status & 0x01; |
| new_d->hidden = (status >> 1) & 0x01; |
| new_d->mandatory = (status >> 2) & 0x01; |
| new_d->chip_instance = chip_instance; |
| |
| 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; |
| |
| case GPIO: |
| new_d->path = ".type=DEVICE_PATH_GPIO,{.gpio={ .id = 0x%x }}"; |
| break; |
| } |
| |
| return new_d; |
| } |
| |
| struct device *new_device_reference(struct bus *parent, |
| struct chip_instance *chip_instance, |
| const char *reference, int status) |
| { |
| const struct device *dev = find_alias(&base_root_dev, reference); |
| |
| if (!dev) { |
| printf("ERROR: Unable to find device reference %s\n", reference); |
| exit(1); |
| } |
| |
| return new_device_with_path(parent, chip_instance, dev->bustype, dev->path_a, |
| dev->path_b, NULL, status); |
| } |
| |
| struct device *new_device_raw(struct bus *parent, |
| struct chip_instance *chip_instance, |
| const int bustype, const char *devnum, |
| char *alias, int status) |
| { |
| char *tmp; |
| int path_a; |
| int path_b = 0; |
| |
| /* Check for alias name conflicts. */ |
| if (alias && find_alias(root_parent->dev, alias)) { |
| printf("ERROR: Alias already exists: %s\n", alias); |
| exit(1); |
| } |
| |
| path_a = strtol(devnum, &tmp, 16); |
| if (*tmp == '.') { |
| tmp++; |
| path_b = strtol(tmp, NULL, 16); |
| } |
| |
| return new_device_with_path(parent, chip_instance, bustype, path_a, path_b, alias, |
| status); |
| } |
| |
| 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); |
| } |
| |
| static void add_reg(struct reg **const head, char *const name, char *const val) |
| { |
| struct reg *const r = S_ALLOC(sizeof(struct reg)); |
| struct reg *prev = NULL; |
| struct reg *cur; |
| |
| r->key = name; |
| r->value = val; |
| |
| for (cur = *head; cur != NULL; prev = cur, cur = cur->next) { |
| const int sort = strcmp(r->key, cur->key); |
| if (sort == 0) { |
| printf("ERROR: duplicate 'register' key '%s'.\n", r->key); |
| exit(1); |
| } |
| if (sort < 0) |
| break; |
| } |
| r->next = cur; |
| if (prev) |
| prev->next = r; |
| else |
| *head = r; |
| } |
| |
| void add_register(struct chip_instance *chip_instance, char *name, char *val) |
| { |
| add_reg(&chip_instance->reg, name, val); |
| } |
| |
| void add_reference(struct chip_instance *const chip_instance, |
| char *const name, char *const alias) |
| { |
| add_reg(&chip_instance->ref, name, alias); |
| } |
| |
| static void set_reference(struct chip_instance *const chip_instance, |
| char *const name, char *const alias) |
| { |
| const struct device *const dev = find_alias(&base_root_dev, alias); |
| if (!dev) { |
| printf("ERROR: Cannot find device alias '%s'.\n", alias); |
| exit(1); |
| } |
| |
| char *const ref_name = S_ALLOC(strlen(dev->name) + 2); |
| sprintf(ref_name, "&%s", dev->name); |
| add_register(chip_instance, name, ref_name); |
| } |
| |
| static void update_references(FILE *file, FILE *head, struct device *dev, |
| struct device *next) |
| { |
| struct reg *ref; |
| |
| for (ref = dev->chip_instance->ref; ref; ref = ref->next) |
| set_reference(dev->chip_instance, ref->key, ref->value); |
| } |
| |
| 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, FILE *head, struct device *ptr, struct device *next) |
| { |
| static int dev_id; |
| |
| if (ptr == &base_root_dev) { |
| fprintf(fil, "STORAGE struct bus %s_links[];\n", |
| ptr->name); |
| return; |
| } |
| |
| char *name = S_ALLOC(10); |
| sprintf(name, "_dev%d", dev_id++); |
| ptr->name = name; |
| |
| 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 struct chip_instance *get_chip_instance(const struct device *dev) |
| { |
| struct chip_instance *chip_ins = dev->chip_instance; |
| /* |
| * If the chip instance of device has base_chip_instance pointer set, then follow that |
| * to update the chip instance for current device. |
| */ |
| if (chip_ins->base_chip_instance) |
| chip_ins = chip_ins->base_chip_instance; |
| |
| return chip_ins; |
| } |
| |
| static void pass1(FILE *fil, FILE *head, struct device *ptr, struct device *next) |
| { |
| int pin; |
| struct chip_instance *chip_ins = get_chip_instance(ptr); |
| int has_children = dev_has_children(ptr); |
| |
| /* Emit probe structures. */ |
| if (ptr->probe && (emit_fw_config_probe(fil, ptr) < 0)) { |
| if (head) |
| fclose(head); |
| fclose(fil); |
| exit(1); |
| } |
| |
| 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.mandatory = %d,\n", ptr->mandatory); |
| 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); |
| else |
| fprintf(fil, "\t.sibling = NULL,\n"); |
| if (ptr->probe) |
| fprintf(fil, "\t.probe_list = %s_probe_list,\n", ptr->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, FILE *head, struct device *ptr, struct device *next) |
| { |
| struct chip_instance *chip_ins = get_chip_instance(ptr); |
| |
| /* Only devices on root bus here. */ |
| if (ptr->bustype == PCI && ptr->parent->dev->bustype == DOMAIN) { |
| fprintf(head, "extern DEVTREE_CONST struct device *const __pci_0_%02x_%d;\n", |
| ptr->path_a, ptr->path_b); |
| fprintf(fil, "DEVTREE_CONST struct device *const __pci_0_%02x_%d = &%s;\n", |
| ptr->path_a, ptr->path_b, ptr->name); |
| |
| if (chip_ins->chip->chiph_exists) { |
| fprintf(head, "extern DEVTREE_CONST void *const __pci_0_%02x_%d_config;\n", |
| ptr->path_a, ptr->path_b); |
| fprintf(fil, "DEVTREE_CONST void *const __pci_0_%02x_%d_config = &%s_info_%d;\n", |
| ptr->path_a, ptr->path_b, chip_ins->chip->name_underscore, chip_ins->id); |
| } |
| } |
| |
| if (ptr->bustype == PNP) { |
| fprintf(head, "extern DEVTREE_CONST struct device *const __pnp_%04x_%02x;\n", |
| ptr->path_a, ptr->path_b); |
| fprintf(fil, "DEVTREE_CONST struct device *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, FILE *head, struct device *ptr, |
| void (*func)(FILE *, 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, head, ptr, peek_queue_head(bfs_q_head)); |
| } |
| } |
| |
| static void emit_chip_headers(FILE *fil, struct chip *chip) |
| { |
| struct chip *tmp = chip; |
| |
| 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) { |
| /* A lot of cpus do not define chip_operations at all, and the ones |
| that do only initialise .name. */ |
| if (strstr(chip->name_underscore, "cpu_") == chip->name_underscore) { |
| fprintf(fil, |
| "__attribute__((weak)) struct chip_operations %s_ops = {};\n", |
| chip->name_underscore); |
| } else { |
| fprintf(fil, "extern 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_chip_configs(FILE *fil) |
| { |
| struct chip *chip = chip_header.next; |
| struct chip_instance *instance; |
| int chip_id; |
| |
| for (; chip; chip = chip->next) { |
| if (!chip->chiph_exists) |
| continue; |
| |
| chip_id = 1; |
| instance = chip->instance; |
| while (instance) { |
| /* |
| * Emit this chip instance only if there is no forwarding pointer to the |
| * base tree chip instance. |
| */ |
| if (instance->base_chip_instance == NULL) { |
| instance->id = chip_id++; |
| emit_chip_instance(fil, instance); |
| } |
| instance = instance->next; |
| } |
| } |
| } |
| |
| static void inherit_subsystem_ids(FILE *file, FILE *head, 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 <options>\n"); |
| printf(" -c | --output_c : Path to output static.c file (required)\n"); |
| printf(" -r | --output_h : Path to header static.h file (required)\n"); |
| printf(" -d | --output_d : Path to header static_devices.h file (required)\n"); |
| printf(" -f | --output_f : Path to header static_fw_config.h file (required)\n"); |
| printf(" -m | --mainboard_devtree : Path to mainboard devicetree file (required)\n"); |
| printf(" -o | --override_devtree : Path to override devicetree file (optional)\n"); |
| printf(" -p | --chipset_devtree : Path to chipset/SOC devicetree file (optional)\n"); |
| |
| exit(1); |
| } |
| |
| 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); |
| } |
| |
| static int device_probe_count(struct fw_config_probe *probe) |
| { |
| int count = 0; |
| while (probe) { |
| probe = probe->next; |
| count++; |
| } |
| |
| return count; |
| } |
| |
| /* |
| * When overriding devices, use the following rules: |
| * 1. If probe count matches and: |
| * a. Entire probe list matches for both devices -> Same device, override. |
| * b. No probe entries match -> Different devices, do not override. |
| * c. Partial list matches -> Bad device tree entries, fail build. |
| * |
| * 2. If probe counts do not match and: |
| * a. No probe entries match -> Different devices, do not override. |
| * b. Partial list matches -> Bad device tree entries, fail build. |
| */ |
| static int device_probes_match(struct device *a, struct device *b) |
| { |
| struct fw_config_probe *a_probe = a->probe; |
| struct fw_config_probe *b_probe = b->probe; |
| int a_probe_count = device_probe_count(a_probe); |
| int b_probe_count = device_probe_count(b_probe); |
| int match_count = 0; |
| |
| while (a_probe) { |
| if (check_probe_exists(b_probe, a_probe->field, a_probe->option)) |
| match_count++; |
| a_probe = a_probe->next; |
| } |
| |
| if ((a_probe_count == b_probe_count) && (a_probe_count == match_count)) |
| return 1; |
| |
| if (match_count) { |
| printf("ERROR: devices with overlapping probes: "); |
| printf(a->path, a->path_a, a->path_b); |
| printf(b->path, b->path_a, b->path_b); |
| printf("\n"); |
| exit(1); |
| } |
| |
| return 0; |
| } |
| |
| /* |
| * 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)); |
| } |
| |
| /* |
| * Match resource nodes from base and override tree to see if they are the same |
| * node. |
| */ |
| static int res_match(struct resource *a, struct resource *b) |
| { |
| return ((a->type == b->type) && |
| (a->index == b->index)); |
| } |
| |
| /* |
| * 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 (res_match(base_res, res)) { |
| 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 reg **const head, struct reg *reg) |
| { |
| struct reg *base_reg = *head; |
| |
| while (base_reg) { |
| if (!strcmp(base_reg->key, reg->key)) { |
| base_reg->value = reg->value; |
| return; |
| } |
| base_reg = base_reg->next; |
| } |
| |
| add_reg(head, 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 and index is | |
| * | | present in base device, then 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. | |
| * | | | |
| * +-----------------------------------------------------------------+ |
| * | | | |
| * | ref | Each reference that is present in override | |
| * | | device is copied over to base device with | |
| * | | the same rules as registers. | |
| * | | | |
| * +-----------------------------------------------------------------+ |
| * | | | |
| * | alias | Base device alias is copied to override. | |
| * | | Override devices cannot change/remove an | |
| * | | existing alias, but they can add an alias | |
| * | | if one does not exist. | |
| * | | | |
| * +-----------------------------------------------------------------+ |
| * | | | |
| * | smbios_slot info | Copy SMBIOS slot information from override.| |
| * | | This allows variants to override PCI(e) | |
| * | | slot information in SMBIOS tables. | |
| * | | | |
| * +-----------------------------------------------------------------+ |
| * | | | |
| * | 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 the hidden state of override device to base device. This allows |
| * override tree to hide or unhide a particular device. |
| */ |
| base_dev->hidden = override_dev->hidden; |
| |
| /* |
| * 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 = reg->next; |
| } |
| |
| /* Copy references just as with registers. */ |
| reg = override_dev->chip_instance->ref; |
| while (reg) { |
| update_register(&base_dev->chip_instance->ref, reg); |
| reg = reg->next; |
| } |
| |
| /* Check for alias name conflicts. */ |
| if (override_dev->alias && find_alias(&base_root_dev, override_dev->alias)) { |
| printf("ERROR: alias already exists: %s\n", override_dev->alias); |
| exit(1); |
| } |
| |
| /* |
| * Copy alias from base device. |
| * |
| * Override devices cannot change/remove an existing alias, |
| * but they can add an alias to a device if one does not exist yet. |
| */ |
| if (base_dev->alias) |
| override_dev->alias = base_dev->alias; |
| else |
| base_dev->alias = override_dev->alias; |
| |
| /* |
| * Use probe list from override device in place of base device, in order |
| * to allow an override to remove a probe from the base device. |
| */ |
| base_dev->probe = override_dev->probe; |
| |
| /* Copy SMBIOS slot information from base device */ |
| base_dev->smbios_slot_type = override_dev->smbios_slot_type; |
| base_dev->smbios_slot_length = override_dev->smbios_slot_length; |
| base_dev->smbios_slot_data_width = override_dev->smbios_slot_data_width; |
| base_dev->smbios_slot_designation = override_dev->smbios_slot_designation; |
| |
| /* |
| * Update base_chip_instance member in chip instance of override tree to forward it to |
| * the chip instance in base tree. |
| */ |
| override_dev->chip_instance->base_chip_instance = get_chip_instance(base_dev); |
| |
| /* |
| * 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; |
| } |
| } |
| |
| /* |
| * 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)) |
| continue; |
| /* If base device has no probe statement, nothing else to compare. */ |
| if (base_child->probe == NULL) |
| break; |
| /* |
| * If base device has probe statements, ensure that all probe conditions |
| * match for base and override device. |
| */ |
| if (device_probes_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); |
| } |
| |
| override_child = next_child; |
| } |
| } |
| |
| static void parse_override_devicetree(const char *file, struct device *dev) |
| { |
| parse_devicetree(file, dev->bus); |
| |
| if (!dev_has_children(dev)) { |
| fprintf(stderr, "ERROR: Override tree needs at least one device!\n"); |
| exit(1); |
| } |
| |
| override_devicetree(&base_root_bus, dev->bus); |
| } |
| |
| static void generate_outputh(FILE *f, const char *fw_conf_header, const char *device_header) |
| { |
| fprintf(f, "#ifndef __STATIC_DEVICE_TREE_H\n"); |
| fprintf(f, "#define __STATIC_DEVICE_TREE_H\n\n"); |
| |
| fprintf(f, "#include <%s>\n", fw_conf_header); |
| fprintf(f, "#include <%s>\n\n", device_header); |
| |
| fprintf(f, "\n#endif /* __STATIC_DEVICE_TREE_H */\n"); |
| } |
| |
| static void generate_outputc(FILE *f, const char *static_header) |
| { |
| fprintf(f, "#include <device/device.h>\n"); |
| fprintf(f, "#include <device/pci.h>\n"); |
| fprintf(f, "#include <fw_config.h>\n"); |
| fprintf(f, "#include <%s>\n", static_header); |
| emit_chip_headers(f, chip_header.next); |
| fprintf(f, "\n#define STORAGE static __unused DEVTREE_CONST\n\n"); |
| |
| walk_device_tree(NULL, NULL, &base_root_dev, inherit_subsystem_ids); |
| fprintf(f, "\n/* pass 0 */\n"); |
| walk_device_tree(f, NULL, &base_root_dev, pass0); |
| walk_device_tree(NULL, NULL, &base_root_dev, update_references); |
| fprintf(f, "\n/* chip configs */\n"); |
| emit_chip_configs(f); |
| fprintf(f, "\n/* pass 1 */\n"); |
| walk_device_tree(f, NULL, &base_root_dev, pass1); |
| } |
| |
| static void generate_outputd(FILE *gen, FILE *dev) |
| { |
| fprintf(dev, "#ifndef __STATIC_DEVICES_H\n"); |
| fprintf(dev, "#define __STATIC_DEVICES_H\n\n"); |
| fprintf(dev, "#include <device/device.h>\n\n"); |
| fprintf(dev, "/* expose_device_names */\n"); |
| walk_device_tree(gen, dev, &base_root_dev, expose_device_names); |
| fprintf(dev, "\n#endif /* __STATIC_DEVICE_NAMES_H */\n"); |
| } |
| |
| static void generate_outputf(FILE *f) |
| { |
| fprintf(f, "#ifndef __STATIC_FW_CONFIG_H\n"); |
| fprintf(f, "#define __STATIC_FW_CONFIG_H\n\n"); |
| emit_fw_config(f); |
| fprintf(f, "\n#endif /* __STATIC_FW_CONFIG_H */\n"); |
| } |
| |
| int main(int argc, char **argv) |
| { |
| static const struct option long_options[] = { |
| { "mainboard_devtree", 1, NULL, 'm' }, |
| { "override_devtree", 1, NULL, 'o' }, |
| { "chipset_devtree", 1, NULL, 'p' }, |
| { "output_c", 1, NULL, 'c' }, |
| { "output_h", 1, NULL, 'r' }, |
| { "output_d", 1, NULL, 'd' }, |
| { "output_f", 1, NULL, 'f' }, |
| { "help", 1, NULL, 'h' }, |
| { } |
| }; |
| const char *override_devtree = NULL; |
| const char *base_devtree = NULL; |
| const char *chipset_devtree = NULL; |
| const char *outputc = NULL; |
| const char *outputh = NULL; |
| const char *outputd = NULL; |
| const char *outputf = NULL; |
| int opt, option_index; |
| |
| while ((opt = getopt_long(argc, argv, "m:o:p:c:r:d:f:h", long_options, |
| &option_index)) != EOF) { |
| switch (opt) { |
| case 'm': |
| base_devtree = strdup(optarg); |
| break; |
| case 'o': |
| override_devtree = strdup(optarg); |
| break; |
| case 'p': |
| chipset_devtree = strdup(optarg); |
| break; |
| case 'c': |
| outputc = strdup(optarg); |
| break; |
| case 'r': |
| outputh = strdup(optarg); |
| break; |
| case 'd': |
| outputd = strdup(optarg); |
| break; |
| case 'f': |
| outputf = strdup(optarg); |
| break; |
| case 'h': |
| default: |
| usage(); |
| } |
| } |
| |
| if (!base_devtree || !outputc || !outputh || !outputd || !outputf) |
| usage(); |
| |
| if (chipset_devtree) { |
| /* Use the chipset devicetree as the base, then override |
| with the mainboard "base" devicetree. */ |
| parse_devicetree(chipset_devtree, &base_root_bus); |
| parse_override_devicetree(base_devtree, &chipset_root_dev); |
| } else { |
| parse_devicetree(base_devtree, &base_root_bus); |
| } |
| |
| if (override_devtree) |
| parse_override_devicetree(override_devtree, &override_root_dev); |
| |
| |
| FILE *autogen = fopen(outputc, "w"); |
| if (!autogen) { |
| fprintf(stderr, "Could not open file '%s' for writing: ", |
| outputc); |
| perror(NULL); |
| exit(1); |
| } |
| |
| FILE *autohead = fopen(outputh, "w"); |
| if (!autohead) { |
| fprintf(stderr, "Could not open file '%s' for writing: ", outputh); |
| perror(NULL); |
| fclose(autogen); |
| exit(1); |
| } |
| |
| FILE *autodev = fopen(outputd, "w"); |
| if (!autodev) { |
| fprintf(stderr, "Could not open file '%s' for writing: ", outputd); |
| perror(NULL); |
| fclose(autogen); |
| fclose(autohead); |
| exit(1); |
| } |
| |
| FILE *autofwconf = fopen(outputf, "w"); |
| if (!autofwconf) { |
| fprintf(stderr, "Could not open file '%s' for writing: ", outputf); |
| perror(NULL); |
| fclose(autogen); |
| fclose(autohead); |
| fclose(autodev); |
| exit(1); |
| } |
| |
| char *f = strdup(outputf); |
| assert(f); |
| char *d = strdup(outputd); |
| assert(d); |
| char *h = strdup(outputh); |
| assert(h); |
| |
| const char *fw_conf_header = basename(f); |
| const char *device_header = basename(d); |
| const char *static_header = basename(h); |
| |
| generate_outputh(autohead, fw_conf_header, device_header); |
| generate_outputc(autogen, static_header); |
| generate_outputd(autogen, autodev); |
| generate_outputf(autofwconf); |
| |
| fclose(autohead); |
| fclose(autogen); |
| fclose(autodev); |
| fclose(autofwconf); |
| free(f); |
| free(d); |
| free(h); |
| |
| return 0; |
| } |