859ecdf517
Even though `device` entries are children of `chip` entries in the devicetree source format, the chips in the translated C structures are only hooked up to device nodes. Hence, any chip with all its settings will be silently dropped by sconfig if there is no device node below it. Let's adapt the parser to ensure that there is at least one `device` entry. The intermediate `chipchildren_dev` rule applies until the first `device` entry is found, then everything continues as before with the `chipchildren` rule. Change-Id: I54830bc1fc7d00a0605f3fe4d36a83ef57ef3312 Signed-off-by: Nico Huber <nico.h@gmx.de> Reviewed-on: https://review.coreboot.org/c/coreboot/+/51119 Reviewed-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-by: Angel Pons <th3fanbus@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
139 lines
5.2 KiB
Text
Executable file
139 lines
5.2 KiB
Text
Executable file
%{
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/* sconfig, coreboot device tree compiler */
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/* SPDX-License-Identifier: GPL-2.0-only */
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#include <stdint.h>
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#include "sconfig.h"
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int yylex();
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void yyerror(const char *s);
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static struct bus *cur_parent;
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static struct chip_instance *cur_chip_instance;
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static struct fw_config_field *cur_field;
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static struct fw_config_field_bits *cur_bits;
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%}
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%union {
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struct device *dev;
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struct chip_instance *chip_instance;
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char *string;
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uint64_t number;
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}
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%token CHIP DEVICE REGISTER ALIAS REFERENCE ASSOCIATION BOOL STATUS MANDATORY BUS RESOURCE END EQUALS HEX STRING PCI PNP I2C APIC CPU_CLUSTER CPU DOMAIN IRQ DRQ SLOT_DESC IO NUMBER SUBSYSTEMID INHERIT IOAPIC_IRQ IOAPIC PCIINT GENERIC SPI USB MMIO GPIO FW_CONFIG_TABLE FW_CONFIG_FIELD FW_CONFIG_OPTION FW_CONFIG_PROBE PIPE
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%%
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devtree: { cur_parent = root_parent; } | devtree chip | devtree fw_config_table;
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/* Ensure at least one `device` below each `chip`. */
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chipchild_nondev: chip | registers | reference;
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chipchild: device | chipchild_nondev;
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chipchildren: chipchildren chipchild | /* empty */ ;
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chipchildren_dev: device chipchildren | chipchild_nondev chipchildren_dev;
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devicechildren: devicechildren device | devicechildren chip | devicechildren resource | devicechildren subsystemid | devicechildren ioapic_irq | devicechildren smbios_slot_desc | devicechildren registers | devicechildren fw_config_probe | /* empty */ ;
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chip: CHIP STRING /* == path */ {
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$<chip_instance>$ = new_chip_instance($<string>2);
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chip_enqueue_tail(cur_chip_instance);
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cur_chip_instance = $<chip_instance>$;
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}
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chipchildren_dev END {
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cur_chip_instance = chip_dequeue_tail();
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};
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device: DEVICE BUS NUMBER /* == devnum */ alias status {
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$<dev>$ = new_device_raw(cur_parent, cur_chip_instance, $<number>2, $<string>3, $<string>4, $<number>5);
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cur_parent = $<dev>$->last_bus;
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}
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devicechildren END {
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cur_parent = $<dev>6->parent;
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};
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device: DEVICE REFERENCE STRING status {
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$<dev>$ = new_device_reference(cur_parent, cur_chip_instance, $<string>3, $<number>4);
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cur_parent = $<dev>$->last_bus;
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}
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devicechildren END {
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cur_parent = $<dev>5->parent;
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};
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alias: /* empty */ {
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$<string>$ = NULL;
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} | ALIAS STRING {
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$<string>$ = $<string>2;
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};
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status: BOOL | STATUS ;
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resource: RESOURCE NUMBER /* == resnum */ EQUALS NUMBER /* == resval */
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{ add_resource(cur_parent, $<number>1, strtol($<string>2, NULL, 0), strtol($<string>4, NULL, 0)); } ;
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reference: REFERENCE STRING /* == alias */ ASSOCIATION STRING /* == field in chip config */
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{ add_reference(cur_chip_instance, $<string>4, $<string>2); } ;
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registers: REGISTER STRING /* == regname */ EQUALS STRING /* == regval */
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{ add_register(cur_chip_instance, $<string>2, $<string>4); } ;
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subsystemid: SUBSYSTEMID NUMBER NUMBER
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{ add_pci_subsystem_ids(cur_parent, strtol($<string>2, NULL, 16), strtol($<string>3, NULL, 16), 0); };
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subsystemid: SUBSYSTEMID NUMBER NUMBER INHERIT
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{ add_pci_subsystem_ids(cur_parent, strtol($<string>2, NULL, 16), strtol($<string>3, NULL, 16), 1); };
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ioapic_irq: IOAPIC_IRQ NUMBER PCIINT NUMBER
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{ add_ioapic_info(cur_parent, strtol($<string>2, NULL, 16), $<string>3, strtol($<string>4, NULL, 16)); };
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smbios_slot_desc: SLOT_DESC STRING STRING STRING STRING
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{ add_slot_desc(cur_parent, $<string>2, $<string>3, $<string>4, $<string>5); };
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smbios_slot_desc: SLOT_DESC STRING STRING STRING
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{ add_slot_desc(cur_parent, $<string>2, $<string>3, $<string>4, NULL); };
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smbios_slot_desc: SLOT_DESC STRING STRING
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{ add_slot_desc(cur_parent, $<string>2, $<string>3, NULL, NULL); };
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/* fw_config: firmware configuration table */
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fw_config_table: FW_CONFIG_TABLE fw_config_table_children END { };
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/* fw_config -> field */
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fw_config_table_children: fw_config_table_children fw_config_field | /* empty */ ;
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/* field -> option */
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fw_config_field_children: fw_config_field_children fw_config_option | /* empty */ ;
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/* <start-bit> <end-bit> */
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fw_config_field_bits: NUMBER /* == start bit */ NUMBER /* == end bit */
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{
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append_fw_config_bits(&cur_bits, strtoul($<string>1, NULL, 0), strtoul($<string>2, NULL, 0));
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};
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/* field <start-bit> <end-bit>(| <start-bit> <end-bit>)* */
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fw_config_field_bits_repeating: PIPE fw_config_field_bits fw_config_field_bits_repeating | /* empty */ ;
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fw_config_field: FW_CONFIG_FIELD STRING fw_config_field_bits fw_config_field_bits_repeating
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{ cur_field = new_fw_config_field($<string>2, cur_bits); }
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fw_config_field_children END { cur_bits = NULL; };
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/* field <bit> (for single-bit fields) */
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fw_config_field: FW_CONFIG_FIELD STRING NUMBER /* == bit */ {
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cur_bits = NULL;
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append_fw_config_bits(&cur_bits, strtoul($<string>3, NULL, 0), strtoul($<string>3, NULL, 0));
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cur_field = new_fw_config_field($<string>2, cur_bits);
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}
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fw_config_field_children END { cur_bits = NULL; };
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/* field (for adding options to an existing field) */
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fw_config_field: FW_CONFIG_FIELD STRING {
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cur_field = get_fw_config_field($<string>2);
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}
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fw_config_field_children END { cur_bits = NULL; };
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/* option <value> */
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fw_config_option: FW_CONFIG_OPTION STRING NUMBER /* == field value */
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{ add_fw_config_option(cur_field, $<string>2, strtoull($<string>3, NULL, 0)); };
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/* probe <field> <option> */
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fw_config_probe: FW_CONFIG_PROBE STRING /* == field */ STRING /* == option */
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{ add_fw_config_probe(cur_parent, $<string>2, $<string>3); }
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%%
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