kexec support in LinuxSH の変更点

追加された行はこの色です。
削除された行はこの色です。
kexec support in LinuxSH へ行く。
*Kexec support in LinuxSH [#b2f38d58]
-kexec kernel support patch for linux-2.6.13-sh~
--apply this patch~
--- %%&ref(linux-2.6.13-sh-kexec.patch);%%~
&color(red){This patch was merged into sh--stable--2.6 in LinuxSH.};~
~
--set kernel config option 
---Kernel features -> kexec system call
~
~

-kexec-tools
--binary and source
---[[kexec-tools_1.101-sh.tgz:http://eggplant.ddo.jp/www/download/debian26/source/kexec-tools/kexec-tools_1.101-sh.tgz]]~
~
--linux-zImage kernel boot support
---append option support.
---When the append option is not specified, 
/proc/cmdline is used.
~
--NetBSD-elf Kernel boot support from Linux's kexec.
---howto option support.
---miniroot (ramdisk root file system) support.
~
~
-debian binary package installation
#pre{{
landisk:~# apt-get install kernel-image-2.6.13-sh kexec-tools
}}
-kexec command help
#pre{{
landisk:~# kexec 
No kernel specified
kexec 1.99 released 21 December 2004
Usage: kexec [OPTION]... [kernel]
Directly reboot into a new kernel

 -h, --help           Print this help.
 -v, --version        Print the version of kexec.
 -f, --force          Force an immediate kexec, don't call shutdown.
 -x, --no-ifdown      Don't bring down network interfaces.
                      (if used, must be last option specified)
 -l, --load           Load the new kernel into the current kernel.
 -p, --load-panic     Load the new kernel for use on panic.
 -u, --unload         Unload the current kexec target kernel.
 -e, --exec           Execute a currently loaded kernel.
 -t, --type=TYPE      Specify the new kernel is of this type.
     --mem-min=<addr> Specify the lowest memory addres to load code into.
     --mem-max=<addr> Specify the highest memory addres to load code into.

Supported kernel file types and options: 
zImage-sh
 --append=STRING      Set the kernel command line to STRING.
 &color(red){--empty-zero=ADDRESS Set the kernel top ADDRESS.}; 

netbsd-sh
 --howto=VALUE        NetBSD kernel boot option.
 --miniroot=FILE      NetBSD miniroot ramdisk.

Architecture options: 
 none

Default options:
 --append="ro root=303 mem=64M console=ttySC1,9600"
 --empty-zero=0x0c001000

 STRING of --appned is set form /proc/cmdline as default.
 ADDRESS of --empty-zero can be set SHELL environment variable
 &color(red){KEXEC_EMPTY_ZERO}; as default.

 ADDRESS can be get in the following method in your system. 
 1) "grep empty_zero /proc/kallsyms". 
 2) "grep empty_zero System.map". 
 3) CONFIG_MEMORY_START + CONFIG_ZERO_PAGE_OFFSET in your kernel
    config file.

}}
-example1 -- kexec linux kernel
#pre{{
landisk:~# kexec --append="mem=64M console=ttySC1,9600 root=/dev/hda3 ro" /boot/zImage
}}
-example2 -- kexec NetBSD kernel ([[sample kernel of LANDISK and ramdisk image:http://eggplant.ddo.jp/www/download/SH-Linux_Kernel_Switcher/netbsd-otameshi.tgz]])
#pre{{
landisk:~# kexec --miniroot=miniroot.img netbsd-RAMDISK
}}
-note~
shutdown command is called from kexec command automatically. Therefore, it is safe.
~
~
-Appendix~
[[linux and tools for LANDISK(SH4)]]
~
~
CENTER:
&color(red){My English is very poor. Please edit it freely. };~
~
*kexec support in linux-2.4.21-iodata [#b719ff0a]
-kexec kernel support patch for linux-2.4.21-iodata~
--apply this patch~
--- &ref(linux-2.4.21-iodata-kexec.patch);~
~
--set kernel config option 
---Kernel hacking -> kexec system call
~
~