-カーネル再構築-

   
 カーネル再構築 No.1

 このサーバも軌道に乗ってきたので( ̄ー ̄)ニヤリッ (ホント?)
 私仕様のカーネル構築に挑戦したいと思います。
 
 マシンは Intel Celeron800 ASUSTEK CUSL2 (i815E) 自作機です。


 インストールした時点のGENERICカーネルは、もっとも一般的で汎用性の高い構成となっているそうです。
 これって、とっても有難い事なんですが・・・

 インストールが上手くいった今 自分仕様のカーネルに構築しなおそうと思う訳で^^;
 そうする事によって 何がお徳か?と言うと・・・
 私に必要ないものが含まれちゃってると メモリを占有しちゃったり、とにかく 必要ないものは削ってスマートになりましょ(*^^)v
 って事です。(私自身の体重も、再構築で簡単にダイエット出来たらうれしいのになぁ・・・)

 再構築にあたって
  ◆ FreeBSDハンドブックさん 
  ◆ kozupon Dot Comさん の 「技術の部屋」FreeBSDカーネル再構築! を参考にさせて頂きました。
 どうもありがとうございましたm(__)m
 
 間違いを犯すと・・・起動しなくなるらしいので( ̄∇ ̄) 少々ビビリながら慎重に作業することにします。
 ※ 最悪(;一_一)起動出来なかった場合・・・boot loaderがkernelを読み込もうとしている時に 
 スペースキーを押して 
  unload
  load kernel.old
  boot

 そうすることによって 以前のkernelで起動が可能らしいです。
 古いkernelは kernel.old として残ってるんですね( ̄ー ̄) (ちょっと安心^^;)

 そんじゃ、再々構築、再々再構築した場合って??? どうなんだろ?

 最初に
 sub2# cd /usr/src/sys/i386/conf
 そこに、GENERIC と言う名前のソースがあるか確認します。
 在りました(^o^)丿

 次に・・・
 自分仕様のカーネルの名前を決めなければいけません。
 私は MYKERNEL310と命名する事にします。
 2003年10月に構築って事で310と付けてみました( ̄ー ̄)
 (慣習として, 名前はすべて大文字でつづられるそうです。)

 GENERIC コンフィグレーションファイルをMYKERNEL310にコピーします。
 sub2# cp GENERIC MYKERNEL310

 今から エディタでMYKERNEL310の編集作業に入ります。(もちろん rootでね♪)
 sub2# vi MYKERNEL310
 ↓下記が MYKERNEL310の編集結果です。
 必要ないモノを消してしまうと・・・間違っちゃったりなんかした場合、ややこしいので^^;
 #を入れて編集しました。
 赤い# 、赤い文字が私の編集した部分になります。

# GENERIC -- Generic kernel configuration file for FreeBSD/i386
#
# For more information on this file, please read the handbook section on
# Kernel Configuration Files:
#
# http://www.FreeBSD.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig-config.html
#
# The handbook is also available locally in /usr/share/doc/handbook
# if you've installed the doc distribution, otherwise always see the
# FreeBSD World Wide Web server (http://www.FreeBSD.org/) for the
# latest information.
#
# An exhaustive list of options and more detailed explanations of the
# device lines is also present in the ./LINT configuration file. If you are
# in doubt as to the purpose or necessity of a line, check first in LINT.
#
# $FreeBSD: src/sys/i386/conf/GENERIC,v 1.246.2.51.2.2 2003/03/25 23:35:15 jhb Exp $

machine i386
#cpu I386_CPU
#cpu I486_CPU
#cpu I586_CPU
cpu I686_CPU     ←私のマシンのCPU #外す。 その他のアーキテクチャーCPUには#付ける。
ident
MYKERNEL310 ←私の新カーネルの名前を入れる。
maxusers
32      ← FreeBSDノートブックを参考に(^^ゞ

#makeoptions DEBUG=-g #Build kernel with gdb(1) debug symbols

#
options MATH_EMULATE #Support for x87 emulation
options INET #InterNETworking
options INET6 #IPv6 communications protocols
options FFS #Berkeley Fast Filesystem
options FFS_ROOT #FFS usable as root device [keep this!]
options SOFTUPDATES #Enable FFS soft updates support
options UFS_DIRHASH #Improve performance on big directories
#options MFS #Memory Filesystem
options MD_ROOT #MD is a potential root device
#options NFS #Network Filesystem
#options NFS_ROOT #NFS usable as root device, NFS required
options MSDOSFS #MSDOS Filesystem
options CD9660 #ISO 9660 Filesystem
options CD9660_ROOT #CD-ROM usable as root, CD9660 required
options PROCFS #Process filesystem
options COMPAT_43 #Compatible with BSD 4.3 [KEEP THIS!]
#options SCSI_DELAY=15000 #Delay (in ms) before probing SCSI
options UCONSOLE #Allow users to grab the console
options USERCONFIG #boot -c editor
options VISUAL_USERCONFIG #visual boot -c editor
options KTRACE #ktrace(1) support
options SYSVSHM #SYSV-style shared memory
options SYSVMSG #SYSV-style message queues
options SYSVSEM #SYSV-style semaphores
options P1003_1B #Posix P1003_1B real-time extensions
options _KPOSIX_PRIORITY_SCHEDULING
options ICMP_BANDLIM #Rate limit bad replies
options KBD_INSTALL_CDEV # install a CDEV entry in /dev
options AHC_REG_PRETTY_PRINT # Print register bitfields in debug
# output. Adds ~128k to driver.
options AHD_REG_PRETTY_PRINT # Print register bitfields in debug
# output. Adds ~215k to driver.

# To make an SMP kernel, the next two are needed
#options SMP # Symmetric MultiProcessor Kernel
#options APIC_IO # Symmetric (APIC) I/O

# To support HyperThreading, HTT is needed in addition to SMP and APIC_IO
#options HTT # HyperThreading Technology

device isa
#device eisa
device pci

# Floppy drives
device fdc0 at isa? port IO_FD1 irq 6 drq 2
device fd0 at fdc0 drive 0
#device fd1 at fdc0 drive 1
#
# If you have a Toshiba Libretto with its Y-E Data PCMCIA floppy,
# don't use the above line for fdc0 but the following one:
#device fdc0

# ATA and ATAPI devices
device ata0 at isa? port IO_WD1 irq 14
device ata1 at isa? port IO_WD2 irq 15
device ata
device atadisk # ATA disk drives
device atapicd # ATAPI CDROM drives
#device atapifd # ATAPI floppy drives
#device atapist # ATAPI tape drives
options ATA_STATIC_ID #Static device numbering

# SCSI Controllers
#device ahb # EISA AHA1742 family    ←SCSIは使用しないので全てコメント
#device ahc # AHA2940 and onboard AIC7xxx devices
#device ahd # AHA39320/29320 and onboard AIC79xx devices
#device amd # AMD 53C974 (Tekram DC-390(T))
#device isp # Qlogic family
#device mpt # LSI-Logic MPT/Fusion
#device ncr # NCR/Symbios Logic
#device sym # NCR/Symbios Logic (newer chipsets)
#options SYM_SETUP_LP_PROBE_MAP=0x40
# Allow ncr to attach legacy NCR devices when
# both sym and ncr are configured

#
device adv0 at isa?
#device adw
#device bt0 at isa?
#device aha0 at isa?
#device aic0 at isa?

#
device ncv # NCR 53C500
#device nsp # Workbit Ninja SCSI-3
#device stg # TMC 18C30/18C50

# SCSI peripherals
#device scbus # SCSI bus (required)
#device da # Direct Access (disks)
#device sa # Sequential Access (tape etc)
#device cd # CD
#device pass # Passthrough device (direct SCSI access)

#
RAID controllers interfaced to the SCSI subsystem
#device asr # DPT SmartRAID V, VI and Adaptec SCSI RAID  ←Redundant Array of Independent Disksは使用しないので全てコメント
#device dpt # DPT Smartcache - See LINT for options!
#device iir # Intel Integrated RAID
#device mly # Mylex AcceleRAID/eXtremeRAID
#device ciss # Compaq SmartRAID 5* series

# RAID controllers
#device aac # Adaptec FSA RAID, Dell PERC2/PERC3
#device aacp # SCSI passthrough for aac (requires CAM)
#device ida # Compaq Smart RAID
#device amr # AMI MegaRAID
#device mlx # Mylex DAC960 family
#device twe # 3ware Escalade

# atkbdc0 controls both the keyboard and the PS/2 mouse
device atkbdc0 at isa? port IO_KBD
device atkbd0 at atkbdc? irq 1 flags 0x1
device psm0 at atkbdc? irq 12

device vga0 at isa?

# splash screen/screen saver
#pseudo-device splash  ←ビデオカードドライバ 私はXを使用しないのでコメント

# syscons is the default console driver, resembling an SCO console
device sc0 at isa? flags 0x100

# Enable this and PCVT_FREEBSD for pcvt vt220 compatible console driver
#device vt0 at isa?
#options XSERVER # support for X server on a vt console
#options FAT_CURSOR # start with block cursor
# If you have a ThinkPAD, uncomment this along with the rest of the PCVT lines
#options PCVT_SCANSET=2 # IBM keyboards are non-std

device agp # support several AGP chipsets

# Floating point support - do not disable.
device npx0 at nexus? port IO_NPX irq 13

# Power management support (see LINT for more options)
#device apm0 at nexus? disable flags 0x20 # Advanced Power Management

# PCCARD (PCMCIA) support
device card
device pcic0 at isa? irq 0 port 0x3e0 iomem 0xd0000
device pcic1 at isa? irq 0 port 0x3e2 iomem 0xd4000 disable

# Serial (COM) ports
device sio0 at isa? port IO_COM1 flags 0x10 irq 4
device sio1 at isa? port IO_COM2 irq 3
#device sio2 at isa? disable port IO_COM3 irq 5
#device sio3 at isa? disable port IO_COM4 irq 9

# Parallel port
device ppc0 at isa? irq 7
device ppbus # Parallel port bus (required)
device lpt # Printer
#device plip # TCP/IP over parallel
#device ppi # Parallel port interface device
#device vpo # Requires scbus and da


# PCI Ethernet NICs.
device de # DEC/Intel DC21x4x (``Tulip'')
device em # Intel PRO/1000 adapter Gigabit Ethernet Card (``Wiseman'')
device txp # 3Com 3cR990 (``Typhoon'')
device vx # 3Com 3c590, 3c595 (``Vortex'')

# PCI Ethernet NICs that use the common MII bus controller code.
# NOTE: Be sure to keep the 'device miibus' line in order to use these NICs!
device miibus # MII bus support
device dc # DEC/Intel 21143 and various workalikes
device fxp # Intel EtherExpress PRO/100B (82557, 82558)
device pcn # AMD Am79C97x PCI 10/100 NICs
device rl # RealTek 8129/8139
device sf # Adaptec AIC-6915 (``Starfire'')
device sis # Silicon Integrated Systems SiS 900/SiS 7016
device ste # Sundance ST201 (D-Link DFE-550TX)
device tl # Texas Instruments ThunderLAN
device tx # SMC EtherPower II (83c170 ``EPIC'')
device vr # VIA Rhine, Rhine II
device wb # Winbond W89C840F
device xl # 3Com 3c90x (``Boomerang'', ``Cyclone'')
device bge # Broadcom BCM570x (``Tigon III'')

# ISA Ethernet NICs.
# 'device ed' requires 'device miibus'
device ed0 at isa? disable port 0x280 irq 10 iomem 0xd8000
device ex
device ep
device fe0 at isa? disable port 0x300
# Xircom Ethernet
device xe
# PRISM I IEEE 802.11b wireless NIC.
device awi
# WaveLAN/IEEE 802.11 wireless NICs. Note: the WaveLAN/IEEE really
# exists only as a PCMCIA device, so there is no ISA attachment needed
# and resources will always be dynamically assigned by the pccard code.
device wi
# Aironet 4500/4800 802.11 wireless NICs. Note: the declaration below will
# work for PCMCIA and PCI cards, as well as ISA cards set to ISA PnP
# mode (the factory default). If you set the switches on your ISA
# card for a manually chosen I/O address and IRQ, you must specify
# those parameters here.
device an
# The probe order of these is presently determined by i386/isa/isa_compat.c.
device ie0 at isa? disable port 0x300 irq 10 iomem 0xd0000
#device le0 at isa? disable port 0x300 irq 5 iomem 0xd0000
device lnc0 at isa? disable port 0x280 irq 10 drq 0
device cs0 at isa? disable port 0x300
device sn0 at isa? disable port 0x300 irq 10

# Pseudo devices - the number indicates how many units to allocate.
pseudo-device loop # Network loopback
pseudo-device ether # Ethernet support
#pseudo-device sl 1 # Kernel SLIP
#pseudo-device ppp 1 # Kernel PPP
pseudo-device tun # Packet tunnel.
pseudo-device pty # Pseudo-ttys (telnet etc)
pseudo-device md # Memory "disks"
pseudo-device gif # IPv6 and IPv4 tunneling
pseudo-device faith 1 # IPv6-to-IPv4 relaying (translation)

# The `bpf' pseudo-device enables the Berkeley Packet Filter.
# Be aware of the administrative consequences of enabling this!
pseudo-device bpf #Berkeley packet filter

# USB support
#device uhci # UHCI PCI->USB interface  ←USBデバイスは一切使用していないので全てコメント
#device ohci # OHCI PCI->USB interface
#device usb # USB Bus (required)
#device ugen # Generic
#device uhid # "Human Interface Devices"
#device ukbd # Keyboard
#device ulpt # Printer
#device umass # Disks/Mass storage - Requires scbus and da
#device ums # Mouse
#device uscanner # Scanners
#device urio # Diamond Rio MP3 Player
# USB Ethernet, requires mii
#device aue # ADMtek USB ethernet
#device cue # CATC USB ethernet
#device kue # Kawasaki LSI USB ethernet