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Code Issues Releases Activity

Add kernel option ACPI_NO_RESET_VIDEO as workaround for problems

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(e.g. LCD white-out after resume) on some machine cased by
re-initialize video BIOS code in acpi_wakecode.
This commit is contained in:
Mitsuru IWASAKI 2003-10-29 03:30:45 +00:00
parent 7921179035
commit 92781c3567
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=121641
4 changed files with 8 additions and 0 deletions
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1
sys/conf/options
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@ -599,6 +599,7 @@ WITNESS_SKIPSPIN opt_witness.h
ACPI_DEBUG opt_acpi.h
ACPI_MAX_THREADS opt_acpi.h
ACPI_NO_SEMAPHORES opt_acpi.h
ACPI_NO_RESET_VIDEO opt_acpi.h
ACPICA_PEDANTIC opt_acpi.h
# options for DEVFS, see sys/fs/devfs/devfs.h

4
sys/i386/acpica/Makefile
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@ -11,6 +11,10 @@ CLEANFILES= acpi_wakecode.h acpi_wakecode.bin acpi_wakecode.o
.endif
CFLAGS+= -I.
.ifdef ACPI_NO_RESET_VIDEO
CFLAGS+= -DACPI_NO_RESET_VIDEO
.endif
all: acpi_wakecode.h
acpi_wakecode.o: acpi_wakecode.S

2
sys/i386/acpica/acpi_wakecode.S
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@ -43,6 +43,7 @@ wakeup_16:
movw %ax,%ds
movw %ax,%ss
#ifndef ACPI_NO_RESET_VIDEO
/*
* Re-initialize video BIOS. Restore DS and SS from CS in
* case the BIOS modified them.
@ -51,6 +52,7 @@ wakeup_16:
movw %cs, %ax
movw %ax, %ds
movw %ax, %ss
#endif
/* Load GDT for real mode */
lgdt physical_gdt

1
sys/i386/conf/NOTES
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@ -425,6 +425,7 @@ device acpi
options ACPI_DEBUG
options ACPI_MAX_THREADS=1
#!options ACPI_NO_SEMAPHORES
#!options ACPI_NO_RESET_VIDEO
#!options ACPICA_PEDANTIC
# DRM options: