4650f5baff
Add support for a basic generic device in the devicetree to bind to a device that does not have a specific bus, but may need to be described in tables for the operating system. For instance some chips may have various GPIO connections that need described but do not fall under any other device. In order to support this export the basic 'scan_static_bus()' that can be used in a device_operations->scan_bus() method to scan for the generic devices. It has been possible to get a semi-generic device by using a fake PNP device, but that isn't really appropriate for many devices. Also Re-generate the shipped files for sconfig. Use flex 2.6.0 to avoid everything being rewritten. Clean up the local paths that leak into the generated configs. Change-Id: If45a5b18825bdb2cf1e4ba4297ee426cbd1678e3 Signed-off-by: Duncan Laurie <dlaurie@chromium.org> Reviewed-on: https://review.coreboot.org/14789 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Leroy P Leahy <leroy.p.leahy@intel.com>
76 lines
2.6 KiB
Text
Executable file
76 lines
2.6 KiB
Text
Executable file
%{
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/*
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* sconfig, coreboot device tree compiler
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*
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* Copyright (C) 2010 coresystems GmbH
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* written by Patrick Georgi <patrick@georgi-clan.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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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 device *cur_parent, *cur_bus;
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%}
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%union {
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struct device *device;
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char *string;
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int number;
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}
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%token CHIP DEVICE REGISTER BOOL BUS RESOURCE END EQUALS HEX STRING PCI PNP I2C APIC CPU_CLUSTER CPU DOMAIN IRQ DRQ IO NUMBER SUBSYSTEMID INHERIT IOAPIC_IRQ IOAPIC PCIINT GENERIC
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%%
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devtree: { cur_parent = cur_bus = head; } chip { postprocess_devtree(); } ;
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chipchildren: chipchildren device | chipchildren chip | chipchildren registers | /* empty */ ;
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devicechildren: devicechildren device | devicechildren chip | devicechildren resource | devicechildren subsystemid | devicechildren ioapic_irq | /* empty */ ;
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chip: CHIP STRING /* == path */ {
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$<device>$ = new_chip(cur_parent, cur_bus, $<string>2);
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cur_parent = $<device>$;
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}
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chipchildren END {
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cur_parent = $<device>3->parent;
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fold_in($<device>3);
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add_header($<device>3);
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};
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device: DEVICE BUS NUMBER /* == devnum */ BOOL {
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$<device>$ = new_device(cur_parent, cur_bus, $<number>2, $<string>3, $<number>4);
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cur_parent = $<device>$;
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cur_bus = $<device>$;
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}
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devicechildren END {
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cur_parent = $<device>5->parent;
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cur_bus = $<device>5->bus;
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fold_in($<device>5);
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alias_siblings($<device>5->children);
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};
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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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registers: REGISTER STRING /* == regname */ EQUALS STRING /* == regval */
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{ add_register(cur_parent, $<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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%%
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