%{ /* sconfig, coreboot device tree compiler */ /* SPDX-License-Identifier: GPL-2.0-only */ #include <stdint.h> #include "sconfig.h" int yylex(); void yyerror(const char *s); static struct bus *cur_parent; static struct chip_instance *cur_chip_instance; static struct fw_config_field *cur_field; static struct fw_config_field_bits *cur_bits; %} %union { struct device *dev; struct chip_instance *chip_instance; char *string; uint64_t number; } %token CHIP DEVICE REGISTER ALIAS REFERENCE ASSOCIATION BOOL STATUS MANDATORY BUS RESOURCE END EQUALS HEX STRING PCI PNP I2C CPU_CLUSTER CPU DOMAIN IRQ DRQ SLOT_DESC SMBIOS_DEV_INFO IO NUMBER SUBSYSTEMID INHERIT PCIINT GENERIC SPI USB MMIO GPIO MDIO FW_CONFIG_TABLE FW_CONFIG_FIELD FW_CONFIG_OPTION FW_CONFIG_PROBE PIPE OPS %% devtree: { cur_parent = root_parent; } | devtree chip | devtree fw_config_table; /* Ensure at least one `device` below each `chip`. */ chipchild_nondev: chip | registers | reference; chipchild: device | chipchild_nondev; chipchildren: chipchildren chipchild | /* empty */ ; chipchildren_dev: device chipchildren | chipchild_nondev chipchildren_dev; devicechildren: devicechildren device | devicechildren chip | devicechildren resource | devicechildren subsystemid | devicechildren smbios_slot_desc | devicechildren smbios_dev_info | devicechildren registers | devicechildren fw_config_probe | devicechildren ops | /* empty */ ; chip: CHIP STRING /* == path */ { $<chip_instance>$ = new_chip_instance($<string>2); chip_enqueue_tail(cur_chip_instance); cur_chip_instance = $<chip_instance>$; } chipchildren_dev END { cur_chip_instance = chip_dequeue_tail(); }; device: DEVICE BUS NUMBER /* == devnum */ alias status { $<dev>$ = new_device_raw(cur_parent, cur_chip_instance, $<number>2, $<string>3, $<string>4, $<number>5); cur_parent = $<dev>$->bus; } devicechildren END { cur_parent = $<dev>6->parent; }; device: DEVICE REFERENCE STRING status { $<dev>$ = new_device_reference(cur_parent, cur_chip_instance, $<string>3, $<number>4); cur_parent = $<dev>$->bus; } devicechildren END { cur_parent = $<dev>5->parent; }; alias: /* empty */ { $<string>$ = NULL; } | ALIAS STRING { $<string>$ = $<string>2; }; status: BOOL | STATUS ; resource: RESOURCE NUMBER /* == resnum */ EQUALS NUMBER /* == resval */ { add_resource(cur_parent, $<number>1, strtol($<string>2, NULL, 0), strtol($<string>4, NULL, 0)); } ; reference: REFERENCE STRING /* == alias */ ASSOCIATION STRING /* == field in chip config */ { add_reference(cur_chip_instance, $<string>4, $<string>2); } ; registers: REGISTER STRING /* == regname */ EQUALS STRING /* == regval */ { add_register(cur_chip_instance, $<string>2, $<string>4); } ; subsystemid: SUBSYSTEMID NUMBER NUMBER { add_pci_subsystem_ids(cur_parent, strtol($<string>2, NULL, 16), strtol($<string>3, NULL, 16), 0); }; subsystemid: SUBSYSTEMID NUMBER NUMBER INHERIT { add_pci_subsystem_ids(cur_parent, strtol($<string>2, NULL, 16), strtol($<string>3, NULL, 16), 1); }; smbios_slot_desc: SLOT_DESC STRING STRING STRING STRING { add_slot_desc(cur_parent, $<string>2, $<string>3, $<string>4, $<string>5); }; smbios_slot_desc: SLOT_DESC STRING STRING STRING { add_slot_desc(cur_parent, $<string>2, $<string>3, $<string>4, NULL); }; smbios_slot_desc: SLOT_DESC STRING STRING { add_slot_desc(cur_parent, $<string>2, $<string>3, NULL, NULL); }; smbios_dev_info: SMBIOS_DEV_INFO NUMBER STRING { add_smbios_dev_info(cur_parent, strtol($<string>2, NULL, 0), $<string>3); }; smbios_dev_info: SMBIOS_DEV_INFO NUMBER { add_smbios_dev_info(cur_parent, strtol($<string>2, NULL, 0), NULL); }; /* fw_config: firmware configuration table */ fw_config_table: FW_CONFIG_TABLE fw_config_table_children END { }; /* fw_config -> field */ fw_config_table_children: fw_config_table_children fw_config_field | /* empty */ ; /* field -> option */ fw_config_field_children: fw_config_field_children fw_config_option | /* empty */ ; /* <start-bit> <end-bit> */ fw_config_field_bits: NUMBER /* == start bit */ NUMBER /* == end bit */ { append_fw_config_bits(&cur_bits, strtoul($<string>1, NULL, 0), strtoul($<string>2, NULL, 0)); }; /* field <start-bit> <end-bit>(| <start-bit> <end-bit>)* */ fw_config_field_bits_repeating: PIPE fw_config_field_bits fw_config_field_bits_repeating | /* empty */ ; fw_config_field: FW_CONFIG_FIELD STRING fw_config_field_bits fw_config_field_bits_repeating { cur_field = new_fw_config_field($<string>2, cur_bits); } fw_config_field_children END { cur_bits = NULL; }; /* field <bit> (for single-bit fields) */ fw_config_field: FW_CONFIG_FIELD STRING NUMBER /* == bit */ { cur_bits = NULL; append_fw_config_bits(&cur_bits, strtoul($<string>3, NULL, 0), strtoul($<string>3, NULL, 0)); cur_field = new_fw_config_field($<string>2, cur_bits); } fw_config_field_children END { cur_bits = NULL; }; /* field (for adding options to an existing field) */ fw_config_field: FW_CONFIG_FIELD STRING { cur_field = get_fw_config_field($<string>2); } fw_config_field_children END { cur_bits = NULL; }; /* option <value> */ fw_config_option: FW_CONFIG_OPTION STRING NUMBER /* == field value */ { add_fw_config_option(cur_field, $<string>2, strtoull($<string>3, NULL, 0)); }; /* probe <field> <option> */ fw_config_probe: FW_CONFIG_PROBE STRING /* == field */ STRING /* == option */ { add_fw_config_probe(cur_parent, $<string>2, $<string>3); } ops: OPS STRING /* == global identifier */ { add_device_ops(cur_parent, $<string>2); } %%