mirror of
https://github.com/freebsd/freebsd-src.git
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Created new section `CPU OPTIONS'. CPU classes and math emulator are
moved to there. Options for CPU feature is also described there.
This commit is contained in:
KATO Takenori
parent
6617929964
commit
56be183376
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=24138
111
sys/conf/NOTES
111
sys/conf/NOTES
@ -2,7 +2,7 @@
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# LINT -- config file for checking all the sources, tries to pull in
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# as much of the source tree as it can.
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#
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# $Id: LINT,v 1.318 1997/03/19 02:59:02 obrien Exp $
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# $Id: LINT,v 1.319 1997/03/20 16:33:15 mpp Exp $
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#
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# NB: You probably don't want to try running a kernel built from this
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# file. Instead, you should start from GENERIC, and add options from
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@ -11,16 +11,10 @@
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#
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# This directive is mandatory; it defines the architecture to be
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# configured for; in this case, the 386 family. You must also specify
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# at least one CPU (the one you intend to run on); deleting the
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# specification for CPUs you don't need to use may make parts of the
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# system run faster. This is especially true removing I386_CPU.
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# configured for; in this case, the 386 family based IBM-PC and
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# compatibles.
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#
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machine "i386"
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cpu "I386_CPU"
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cpu "I486_CPU"
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cpu "I586_CPU" # aka Pentium(tm)
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cpu "I686_CPU" # aka Pentium Pro(tm)
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#
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# This is the ``identification'' of the kernel. Usually this should
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@ -47,17 +41,6 @@ maxusers 10
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options "MAXDSIZ=(256*1024*1024)"
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options "DFLDSIZ=(256*1024*1024)"
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#
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# A math emulator is mandatory if you wish to run on hardware which
|
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# does not have a floating-point processor. Pick either the original,
|
||||
# bogus (but freely-distributable) math emulator, or a much more
|
||||
# fully-featured but GPL-licensed emulator taken from Linux.
|
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#
|
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options MATH_EMULATE #Support for x87 emulation
|
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# Don't enable both of these in a real config.
|
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options GPL_MATH_EMULATE #Support for x87 emulation via
|
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#new math emulator
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# When this is set, be extra conservative in various parts of the kernel
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# and choose functionality over speed (on the widest variety of systems).
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options FAILSAFE
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@ -77,6 +60,94 @@ options INCLUDE_CONFIG_FILE # Include this file in kernel
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#
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config kernel root on wd0 dumps on wd0
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#####################################################################
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# CPU OPTIONS
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#
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# You must specify at least one CPU (the one you intend to run on);
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# deleting the specification for CPUs you don't need to use may make
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# parts of the system run faster. This is especially true removing
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# I386_CPU.
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#
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cpu "I386_CPU"
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cpu "I486_CPU"
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cpu "I586_CPU" # aka Pentium(tm)
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cpu "I686_CPU" # aka Pentium Pro(tm)
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#
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# Options for CPU features.
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#
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# CPU_BLUELIGHTNING_FPU_OP_CACHE enables FPU operand cache on IBM
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# BlueLightning CPU. It works only with Cyrix FPU, and this option
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# should not be used with Intel FPU.
|
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#
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# CPU_BLUELIGHTNING_3X enables triple-clock mode on IBM Blue Lightning
|
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# CPU if CPU supports it. The default is double-clock mode on
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# BlueLightning CPU box.
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#
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# CPU_BTB_EN enables branch target buffer on Cyrix 5x86 (NOTE 1).
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#
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# CPU_DISABLE_5X86_LSSER disables load store serialize (i.e. enables
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# reorder). This option should not be used if you use memory mapped
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# I/O device(s).
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#
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# CPU_FASTER_5X86_FPU enables faster FPU exception handler.
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#
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# CPU_I486_ON_386 enables CPU cache on i486 based CPU upgrade products
|
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# for i386 machines.
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# CPU_IORT defines I/O clock delay time (NOTE 1). Default vaules of
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# I/O clock delay time on Cyrix 5x86 and 6x86 are 0 and 7,respectively
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# (no clock delay).
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#
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# CPU_LOOP_EN prevents flushing the prefetch buffer if the destination
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# of a jump is already present in the prefetch buffer on Cyrix 5x86(NOTE
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# 1).
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#
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# CPU_RSTK_EN enables return stack on Cyrix 5x86 (NOTE 1).
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#
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# CPU_SUSP_HLT enables suspend on HALT. If this option is set, CPU
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# enters suspend mode following execution of HALT instruction.
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#
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# CYRIX_CACHE_WORKS enables CPU cache on Cyrix 486 CPUs with cache
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# flush at hold state.
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#
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# CYRIX_CACHE_REALLY_WORKS enables (1) CPU cache on Cyrix 486 CPUs
|
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# without cache flush at hold state, and (2) write-back CPU cache on
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# Cyrix 6x86 whose revision < 2.7 (NOTE 2).
|
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#
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# NOTE 1: The options, CPU_BTB_EN, CPU_LOOP_EN, CPU_IORT,
|
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# CPU_LOOP_ENand CPU_RSTK_EN should no be used becasue of CPU bugs.
|
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# These options may crash your system.
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#
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# NOTE 2: If CYRIX_CACHE_REALLY_WORKS is not set, CPU cache is enabled
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# in write-through mode when revision < 2.7. If revision of Cyrix
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# 6x86 >= 2.7, CPU cache is always enabled in write-back mode.
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#
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options "CPU_BLUELIGHTNING_FPU_OP_CACHE"
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options "CPU_BLUELIGHTNING_3X"
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options "CPU_BTB_EN"
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options "CPU_DISABLE_5X86_LSSER"
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options "CPU_FASTER_5X86_FPU"
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options "CPU_I486_ON_386"
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options "CPU_IORT"
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options "CPU_LOOP_EN"
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options "CPU_RSTK_EN"
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options "CPU_SUSP_HLT"
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options "CYRIX_CACHE_WORKS"
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options "CYRIX_CACHE_REALLY_WORKS"
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#
|
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# A math emulator is mandatory if you wish to run on hardware which
|
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# does not have a floating-point processor. Pick either the original,
|
||||
# bogus (but freely-distributable) math emulator, or a much more
|
||||
# fully-featured but GPL-licensed emulator taken from Linux.
|
||||
#
|
||||
options MATH_EMULATE #Support for x87 emulation
|
||||
# Don't enable both of these in a real config.
|
||||
options GPL_MATH_EMULATE #Support for x87 emulation via
|
||||
#new math emulator
|
||||
|
||||
|
||||
#####################################################################
|
||||
# COMPATIBILITY OPTIONS
|
||||
|
||||
@ -2,7 +2,7 @@
|
||||
# LINT -- config file for checking all the sources, tries to pull in
|
||||
# as much of the source tree as it can.
|
||||
#
|
||||
# $Id: LINT,v 1.318 1997/03/19 02:59:02 obrien Exp $
|
||||
# $Id: LINT,v 1.319 1997/03/20 16:33:15 mpp Exp $
|
||||
#
|
||||
# NB: You probably don't want to try running a kernel built from this
|
||||
# file. Instead, you should start from GENERIC, and add options from
|
||||
@ -11,16 +11,10 @@
|
||||
|
||||
#
|
||||
# This directive is mandatory; it defines the architecture to be
|
||||
# configured for; in this case, the 386 family. You must also specify
|
||||
# at least one CPU (the one you intend to run on); deleting the
|
||||
# specification for CPUs you don't need to use may make parts of the
|
||||
# system run faster. This is especially true removing I386_CPU.
|
||||
# configured for; in this case, the 386 family based IBM-PC and
|
||||
# compatibles.
|
||||
#
|
||||
machine "i386"
|
||||
cpu "I386_CPU"
|
||||
cpu "I486_CPU"
|
||||
cpu "I586_CPU" # aka Pentium(tm)
|
||||
cpu "I686_CPU" # aka Pentium Pro(tm)
|
||||
|
||||
#
|
||||
# This is the ``identification'' of the kernel. Usually this should
|
||||
@ -47,17 +41,6 @@ maxusers 10
|
||||
options "MAXDSIZ=(256*1024*1024)"
|
||||
options "DFLDSIZ=(256*1024*1024)"
|
||||
|
||||
#
|
||||
# A math emulator is mandatory if you wish to run on hardware which
|
||||
# does not have a floating-point processor. Pick either the original,
|
||||
# bogus (but freely-distributable) math emulator, or a much more
|
||||
# fully-featured but GPL-licensed emulator taken from Linux.
|
||||
#
|
||||
options MATH_EMULATE #Support for x87 emulation
|
||||
# Don't enable both of these in a real config.
|
||||
options GPL_MATH_EMULATE #Support for x87 emulation via
|
||||
#new math emulator
|
||||
|
||||
# When this is set, be extra conservative in various parts of the kernel
|
||||
# and choose functionality over speed (on the widest variety of systems).
|
||||
options FAILSAFE
|
||||
@ -77,6 +60,94 @@ options INCLUDE_CONFIG_FILE # Include this file in kernel
|
||||
#
|
||||
config kernel root on wd0 dumps on wd0
|
||||
|
||||
|
||||
#####################################################################
|
||||
# CPU OPTIONS
|
||||
|
||||
#
|
||||
# You must specify at least one CPU (the one you intend to run on);
|
||||
# deleting the specification for CPUs you don't need to use may make
|
||||
# parts of the system run faster. This is especially true removing
|
||||
# I386_CPU.
|
||||
#
|
||||
cpu "I386_CPU"
|
||||
cpu "I486_CPU"
|
||||
cpu "I586_CPU" # aka Pentium(tm)
|
||||
cpu "I686_CPU" # aka Pentium Pro(tm)
|
||||
|
||||
#
|
||||
# Options for CPU features.
|
||||
#
|
||||
# CPU_BLUELIGHTNING_FPU_OP_CACHE enables FPU operand cache on IBM
|
||||
# BlueLightning CPU. It works only with Cyrix FPU, and this option
|
||||
# should not be used with Intel FPU.
|
||||
#
|
||||
# CPU_BLUELIGHTNING_3X enables triple-clock mode on IBM Blue Lightning
|
||||
# CPU if CPU supports it. The default is double-clock mode on
|
||||
# BlueLightning CPU box.
|
||||
#
|
||||
# CPU_BTB_EN enables branch target buffer on Cyrix 5x86 (NOTE 1).
|
||||
#
|
||||
# CPU_DISABLE_5X86_LSSER disables load store serialize (i.e. enables
|
||||
# reorder). This option should not be used if you use memory mapped
|
||||
# I/O device(s).
|
||||
#
|
||||
# CPU_FASTER_5X86_FPU enables faster FPU exception handler.
|
||||
#
|
||||
# CPU_I486_ON_386 enables CPU cache on i486 based CPU upgrade products
|
||||
# for i386 machines.
|
||||
# CPU_IORT defines I/O clock delay time (NOTE 1). Default vaules of
|
||||
# I/O clock delay time on Cyrix 5x86 and 6x86 are 0 and 7,respectively
|
||||
# (no clock delay).
|
||||
#
|
||||
# CPU_LOOP_EN prevents flushing the prefetch buffer if the destination
|
||||
# of a jump is already present in the prefetch buffer on Cyrix 5x86(NOTE
|
||||
# 1).
|
||||
#
|
||||
# CPU_RSTK_EN enables return stack on Cyrix 5x86 (NOTE 1).
|
||||
#
|
||||
# CPU_SUSP_HLT enables suspend on HALT. If this option is set, CPU
|
||||
# enters suspend mode following execution of HALT instruction.
|
||||
#
|
||||
# CYRIX_CACHE_WORKS enables CPU cache on Cyrix 486 CPUs with cache
|
||||
# flush at hold state.
|
||||
#
|
||||
# CYRIX_CACHE_REALLY_WORKS enables (1) CPU cache on Cyrix 486 CPUs
|
||||
# without cache flush at hold state, and (2) write-back CPU cache on
|
||||
# Cyrix 6x86 whose revision < 2.7 (NOTE 2).
|
||||
#
|
||||
# NOTE 1: The options, CPU_BTB_EN, CPU_LOOP_EN, CPU_IORT,
|
||||
# CPU_LOOP_ENand CPU_RSTK_EN should no be used becasue of CPU bugs.
|
||||
# These options may crash your system.
|
||||
#
|
||||
# NOTE 2: If CYRIX_CACHE_REALLY_WORKS is not set, CPU cache is enabled
|
||||
# in write-through mode when revision < 2.7. If revision of Cyrix
|
||||
# 6x86 >= 2.7, CPU cache is always enabled in write-back mode.
|
||||
#
|
||||
options "CPU_BLUELIGHTNING_FPU_OP_CACHE"
|
||||
options "CPU_BLUELIGHTNING_3X"
|
||||
options "CPU_BTB_EN"
|
||||
options "CPU_DISABLE_5X86_LSSER"
|
||||
options "CPU_FASTER_5X86_FPU"
|
||||
options "CPU_I486_ON_386"
|
||||
options "CPU_IORT"
|
||||
options "CPU_LOOP_EN"
|
||||
options "CPU_RSTK_EN"
|
||||
options "CPU_SUSP_HLT"
|
||||
options "CYRIX_CACHE_WORKS"
|
||||
options "CYRIX_CACHE_REALLY_WORKS"
|
||||
|
||||
#
|
||||
# A math emulator is mandatory if you wish to run on hardware which
|
||||
# does not have a floating-point processor. Pick either the original,
|
||||
# bogus (but freely-distributable) math emulator, or a much more
|
||||
# fully-featured but GPL-licensed emulator taken from Linux.
|
||||
#
|
||||
options MATH_EMULATE #Support for x87 emulation
|
||||
# Don't enable both of these in a real config.
|
||||
options GPL_MATH_EMULATE #Support for x87 emulation via
|
||||
#new math emulator
|
||||
|
||||
|
||||
#####################################################################
|
||||
# COMPATIBILITY OPTIONS
|
||||
|
||||
@ -2,7 +2,7 @@
|
||||
# LINT -- config file for checking all the sources, tries to pull in
|
||||
# as much of the source tree as it can.
|
||||
#
|
||||
# $Id: LINT,v 1.318 1997/03/19 02:59:02 obrien Exp $
|
||||
# $Id: LINT,v 1.319 1997/03/20 16:33:15 mpp Exp $
|
||||
#
|
||||
# NB: You probably don't want to try running a kernel built from this
|
||||
# file. Instead, you should start from GENERIC, and add options from
|
||||
@ -11,16 +11,10 @@
|
||||
|
||||
#
|
||||
# This directive is mandatory; it defines the architecture to be
|
||||
# configured for; in this case, the 386 family. You must also specify
|
||||
# at least one CPU (the one you intend to run on); deleting the
|
||||
# specification for CPUs you don't need to use may make parts of the
|
||||
# system run faster. This is especially true removing I386_CPU.
|
||||
# configured for; in this case, the 386 family based IBM-PC and
|
||||
# compatibles.
|
||||
#
|
||||
machine "i386"
|
||||
cpu "I386_CPU"
|
||||
cpu "I486_CPU"
|
||||
cpu "I586_CPU" # aka Pentium(tm)
|
||||
cpu "I686_CPU" # aka Pentium Pro(tm)
|
||||
|
||||
#
|
||||
# This is the ``identification'' of the kernel. Usually this should
|
||||
@ -47,17 +41,6 @@ maxusers 10
|
||||
options "MAXDSIZ=(256*1024*1024)"
|
||||
options "DFLDSIZ=(256*1024*1024)"
|
||||
|
||||
#
|
||||
# A math emulator is mandatory if you wish to run on hardware which
|
||||
# does not have a floating-point processor. Pick either the original,
|
||||
# bogus (but freely-distributable) math emulator, or a much more
|
||||
# fully-featured but GPL-licensed emulator taken from Linux.
|
||||
#
|
||||
options MATH_EMULATE #Support for x87 emulation
|
||||
# Don't enable both of these in a real config.
|
||||
options GPL_MATH_EMULATE #Support for x87 emulation via
|
||||
#new math emulator
|
||||
|
||||
# When this is set, be extra conservative in various parts of the kernel
|
||||
# and choose functionality over speed (on the widest variety of systems).
|
||||
options FAILSAFE
|
||||
@ -77,6 +60,94 @@ options INCLUDE_CONFIG_FILE # Include this file in kernel
|
||||
#
|
||||
config kernel root on wd0 dumps on wd0
|
||||
|
||||
|
||||
#####################################################################
|
||||
# CPU OPTIONS
|
||||
|
||||
#
|
||||
# You must specify at least one CPU (the one you intend to run on);
|
||||
# deleting the specification for CPUs you don't need to use may make
|
||||
# parts of the system run faster. This is especially true removing
|
||||
# I386_CPU.
|
||||
#
|
||||
cpu "I386_CPU"
|
||||
cpu "I486_CPU"
|
||||
cpu "I586_CPU" # aka Pentium(tm)
|
||||
cpu "I686_CPU" # aka Pentium Pro(tm)
|
||||
|
||||
#
|
||||
# Options for CPU features.
|
||||
#
|
||||
# CPU_BLUELIGHTNING_FPU_OP_CACHE enables FPU operand cache on IBM
|
||||
# BlueLightning CPU. It works only with Cyrix FPU, and this option
|
||||
# should not be used with Intel FPU.
|
||||
#
|
||||
# CPU_BLUELIGHTNING_3X enables triple-clock mode on IBM Blue Lightning
|
||||
# CPU if CPU supports it. The default is double-clock mode on
|
||||
# BlueLightning CPU box.
|
||||
#
|
||||
# CPU_BTB_EN enables branch target buffer on Cyrix 5x86 (NOTE 1).
|
||||
#
|
||||
# CPU_DISABLE_5X86_LSSER disables load store serialize (i.e. enables
|
||||
# reorder). This option should not be used if you use memory mapped
|
||||
# I/O device(s).
|
||||
#
|
||||
# CPU_FASTER_5X86_FPU enables faster FPU exception handler.
|
||||
#
|
||||
# CPU_I486_ON_386 enables CPU cache on i486 based CPU upgrade products
|
||||
# for i386 machines.
|
||||
# CPU_IORT defines I/O clock delay time (NOTE 1). Default vaules of
|
||||
# I/O clock delay time on Cyrix 5x86 and 6x86 are 0 and 7,respectively
|
||||
# (no clock delay).
|
||||
#
|
||||
# CPU_LOOP_EN prevents flushing the prefetch buffer if the destination
|
||||
# of a jump is already present in the prefetch buffer on Cyrix 5x86(NOTE
|
||||
# 1).
|
||||
#
|
||||
# CPU_RSTK_EN enables return stack on Cyrix 5x86 (NOTE 1).
|
||||
#
|
||||
# CPU_SUSP_HLT enables suspend on HALT. If this option is set, CPU
|
||||
# enters suspend mode following execution of HALT instruction.
|
||||
#
|
||||
# CYRIX_CACHE_WORKS enables CPU cache on Cyrix 486 CPUs with cache
|
||||
# flush at hold state.
|
||||
#
|
||||
# CYRIX_CACHE_REALLY_WORKS enables (1) CPU cache on Cyrix 486 CPUs
|
||||
# without cache flush at hold state, and (2) write-back CPU cache on
|
||||
# Cyrix 6x86 whose revision < 2.7 (NOTE 2).
|
||||
#
|
||||
# NOTE 1: The options, CPU_BTB_EN, CPU_LOOP_EN, CPU_IORT,
|
||||
# CPU_LOOP_ENand CPU_RSTK_EN should no be used becasue of CPU bugs.
|
||||
# These options may crash your system.
|
||||
#
|
||||
# NOTE 2: If CYRIX_CACHE_REALLY_WORKS is not set, CPU cache is enabled
|
||||
# in write-through mode when revision < 2.7. If revision of Cyrix
|
||||
# 6x86 >= 2.7, CPU cache is always enabled in write-back mode.
|
||||
#
|
||||
options "CPU_BLUELIGHTNING_FPU_OP_CACHE"
|
||||
options "CPU_BLUELIGHTNING_3X"
|
||||
options "CPU_BTB_EN"
|
||||
options "CPU_DISABLE_5X86_LSSER"
|
||||
options "CPU_FASTER_5X86_FPU"
|
||||
options "CPU_I486_ON_386"
|
||||
options "CPU_IORT"
|
||||
options "CPU_LOOP_EN"
|
||||
options "CPU_RSTK_EN"
|
||||
options "CPU_SUSP_HLT"
|
||||
options "CYRIX_CACHE_WORKS"
|
||||
options "CYRIX_CACHE_REALLY_WORKS"
|
||||
|
||||
#
|
||||
# A math emulator is mandatory if you wish to run on hardware which
|
||||
# does not have a floating-point processor. Pick either the original,
|
||||
# bogus (but freely-distributable) math emulator, or a much more
|
||||
# fully-featured but GPL-licensed emulator taken from Linux.
|
||||
#
|
||||
options MATH_EMULATE #Support for x87 emulation
|
||||
# Don't enable both of these in a real config.
|
||||
options GPL_MATH_EMULATE #Support for x87 emulation via
|
||||
#new math emulator
|
||||
|
||||
|
||||
#####################################################################
|
||||
# COMPATIBILITY OPTIONS
|
||||
|
||||
Loading…
Reference in New Issue
Block a user