linux系统串口支持

在/boot/grub/grub.conf中添加console=ttyS0,9600n8

centos6.4修改后的grub.conf文件如下：

# grub.conf generated by anaconda

#

# Note that you do not have to rerun grub after making changes to this file

# NOTICE:  You have a /boot partition.  This means that

#          all kernel and initrd paths are relative to /boot/, eg.

#          root (hd0,0)

#          kernel /vmlinuz-version ro root=/dev/mapper/VolGroup-lv_root

#          initrd /initrd-[generic-]version.img

#boot=/dev/md127

default=0

timeout=5

splashimage=(hd0,0)/grub/splash.xpm.gz

hiddenmenu

title CentOS (2.6.32-358.el6.x86_64)

        root (hd0,0)

        kernel /vmlinuz-2.6.32-358.el6.x86_64 ro root=/dev/mapper/VolGroup-lv_root rd_NO_LUKS rd_LVM_LV=VolGroup/lv_swap crashkernel

=auto LANG=zh_CN.UTF-8 rd_MD_UUID=2a5ceb12:c94cb93a:be77ebd2:596edd7d rd_LVM_LV=VolGroup/lv_root rd_MD_UUID=ea9ec9d6:fa1e54e1:b50997

d2:0783075a  KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM rhgb quiet console=ttyS0,9600n8

        initrd /initramfs-2.6.32-358.el6.x86_64.img