2010-04-08 13:37:43 +02:00
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%{
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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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2016-05-07 10:11:14 +02:00
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* written by Patrick Georgi <patrick@georgi-clan.de>
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2010-04-08 13:37:43 +02:00
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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.tab.h"
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int linenum = 0;
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%}
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%option nodebug
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%%
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2019-04-12 14:42:17 +02:00
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[ \t]+ {}
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#.*\n {linenum++;}
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\r?\n {linenum++;}
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chip {return(CHIP);}
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device {return(DEVICE);}
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register {return(REGISTER);}
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on {yylval.number=1; return(BOOL);}
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off {yylval.number=0; return(BOOL);}
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Add configurable ramstage support for minimal PCI scanning
This CL has changes that allow us to enable a configurable
ramstage, and one change that allows us to minimize PCI
scanning. Minimal scanning is a frequently requested feature.
To enable it, we add two new variables to src/Kconfig
CONFIGURABLE_RAMSTAGE
is the overall variable controlling other options for minimizing the
ramstage.
MINIMAL_PCI_SCANNING is how we indicate we wish to enable minimal
PCI scanning.
Some devices must be scanned in all cases, such as 0:0.0.
To indicate which devices we must scan, we add a new mandatory
keyword to sconfig
It is used in place of on, off, or hidden, and indicates
a device is enabled and mandatory. Mandatory
devices are always scanned. When MINIMAL_PCI_SCANNING is enabled,
ONLY mandatory devices are scanned.
We further add support in src/device/pci_device.c to manage
both MINIMAL_PCI_SCANNING and mandatory devices.
Finally, to show how this works in practice, we add mandatory
keywords to 3 devices on the qemu-q35.
TEST=
1. This is tested and working on the qemu-q35 target.
2. On CML-Hatch
Before CL:
Total Boot time: ~685ms
After CL:
Total Boot time: ~615ms
Change-Id: I2073d9f8e9297c2b02530821ebb634ea2a5c758e
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36221
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jeremy Soller <jeremy@system76.com>
2019-10-22 04:02:24 +02:00
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hidden {yylval.number=3; return(STATUS);}
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mandatory {yylval.number=5; return(STATUS);}
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2019-04-12 14:42:17 +02:00
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pci {yylval.number=PCI; return(BUS);}
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ioapic {yylval.number=IOAPIC; return(BUS);}
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pnp {yylval.number=PNP; return(BUS);}
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i2c {yylval.number=I2C; return(BUS);}
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lapic {yylval.number=APIC; return(BUS);}
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cpu_cluster {yylval.number=CPU_CLUSTER; return(BUS);}
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cpu {yylval.number=CPU; return(BUS);}
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domain {yylval.number=DOMAIN; return(BUS);}
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generic {yylval.number=GENERIC; return(BUS);}
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mmio {yylval.number=MMIO; return(BUS);}
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spi {yylval.number=SPI; return(BUS);}
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usb {yylval.number=USB; return(BUS);}
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irq {yylval.number=IRQ; return(RESOURCE);}
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drq {yylval.number=DRQ; return(RESOURCE);}
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io {yylval.number=IO; return(RESOURCE);}
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ioapic_irq {return(IOAPIC_IRQ);}
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inherit {return(INHERIT);}
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subsystemid {return(SUBSYSTEMID);}
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end {return(END);}
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smbios_slot_desc {return(SLOT_DESC);}
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= {return(EQUALS);}
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0x[0-9a-fA-F.]+ {yylval.string = malloc(yyleng+1); strncpy(yylval.string, yytext, yyleng); yylval.string[yyleng]='\0'; return(NUMBER);}
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[0-9.]+ {yylval.string = malloc(yyleng+1); strncpy(yylval.string, yytext, yyleng); yylval.string[yyleng]='\0'; return(NUMBER);}
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[0-9a-fA-F.]+ {yylval.string = malloc(yyleng+1); strncpy(yylval.string, yytext, yyleng); yylval.string[yyleng]='\0'; return(NUMBER);}
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INT[A-D] {yylval.string = malloc(yyleng+1); strncpy(yylval.string, yytext, yyleng); yylval.string[yyleng]='\0'; return(PCIINT);}
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\"\"[^\"]+\"\" {yylval.string = malloc(yyleng-1); strncpy(yylval.string, yytext+1, yyleng-2); yylval.string[yyleng-2]='\0'; return(STRING);}
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\"[^\"]+\" {yylval.string = malloc(yyleng-1); strncpy(yylval.string, yytext+1, yyleng-2); yylval.string[yyleng-2]='\0'; return(STRING);}
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[^ \n\t]+ {yylval.string = malloc(yyleng+1); strncpy(yylval.string, yytext, yyleng); yylval.string[yyleng]='\0'; return(STRING);}
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2010-04-08 13:37:43 +02:00
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%%
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