#!/bin/sh
#
# ti processor sdk linux am335x evm /bin/setup-targetfs-nfs.sh hacking
# 说明：
# 本文主要对TI的sdk中的setup-targetfs-nfs.sh脚本进行解读，是为了了解
# 其工作机制。
#
# 2016-4-16 深圳 南山平山村 曾剑锋
# This distribution contains contributions or derivatives under copyright
# as follows:
#
# Copyright (c) 2010, Texas Instruments Incorporated
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# - Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
# - Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# - Neither the name of Texas Instruments nor the names of its
# contributors may be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
# LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
cwd=`dirname $0`
. $cwd/common.sh
#
# #platform
# PLATFORM=am335x-evm
# #defconfig
# DEFCONFIG=singlecore-omap2plus_defconfig
# #Architecture
# ARCH=armv7-a
# #u-boot machine
# UBOOT_MACHINE=am335x_evm_config
# #Points to the root of the TI SDK
# export TI_SDK_PATH=/home/Qt/ti-processor-sdk-linux-am335x-evm-01.00.00.00
# #root of the target file system for installing applications
# DESTDIR=/home/Qt/ti-processor-sdk-linux-am335x-evm-01.00.00.00/targetNFS
# #Points to the root of the Linux libraries and headers matching the
# #demo file system.
# export LINUX_DEVKIT_PATH=$(TI_SDK_PATH)/linux-devkit
# #Cross compiler prefix
# export CROSS_COMPILE=$(LINUX_DEVKIT_PATH)/sysroots/i686-arago-linux/usr/bin/arm-linux-gnueabihf-
# #Default CC value to be used when cross compiling. This is so that the
# #GNU Make default of "cc" is not used to point to the host compiler
# export CC=$(CROSS_COMPILE)gcc
# #Location of environment-setup file
# export ENV_SETUP=$(LINUX_DEVKIT_PATH)/environment-setup
# #The directory that points to the SDK kernel source tree
# LINUXKERNEL_INSTALL_DIR=$(TI_SDK_PATH)/board-support/linux-3.14.26-g2489c02
# CFLAGS= -march=armv7-a -marm -mthumb-interwork -mfloat-abi=hard -mfpu=neon -mtune=cortex-a8
# SDK_PATH_TARGET=$(TI_SDK_PATH)/linux-devkit/sysroots/cortexa8t2hf-vfp-neon-linux-gnueabi/
# MAKE_JOBS=4
# TI_SDK_PATH=/home/Qt/ti-processor-sdk-linux-am335x-evm-01.00.00.00
SDKinstall=`grep TI_SDK_PATH= $cwd/../Rules.make | cut -d= -f2`
# dstdefault=/home/Qt/ti-processor-sdk-linux-am335x-evm-01.00.00.00/targetNFS
dstdefault=$SDKinstall/targetNFS
echo "--------------------------------------------------------------------------------"
# 配置NFS目录
echo "In which directory do you want to install the target filesystem?(if this directory does not exist it will be created)"
read -p "[ $dstdefault ] " dst
if [ ! -n "$dst" ]; then
dst=$dstdefault
fi
echo "--------------------------------------------------------------------------------"
echo
echo "--------------------------------------------------------------------------------"
echo "This step will extract the target filesystem to $dst"
echo
# 需要root权限
echo "Note! This command requires you to have administrator priviliges (sudo access) "
echo "on your host."
read -p "Press return to continue" REPLY
extract_fs() {
# 文件系统的tar包位置
fstar=`ls -1 $cwd/../filesystem/??sdk*rootfs*.tar.gz`
me=`whoami` # 获取用户名
sudo mkdir -p $1 # 创建指定目录
check_status
sudo tar xzf $fstar -C $1 # 将文件系统解压到指定的目录
check_status
sudo chown $me:$me $1 # 改变指定目录的用户和群组
check_status
sudo chown -R $me:$me $1/home $1/usr $1/etc $1/lib $1/boot # 改变指定目录下的属性
check_status
# Opt isn't a standard Linux directory. First make sure it exist.
if [ -d $1/opt ];
then
sudo chown -R $me:$me $1/opt
check_status
fi
echo
# 显示提取文件成功
echo "Successfully extracted `basename $fstar` to $1"
}
# 检查目录是否存在，根据是否存在做对应的事：备份、拷贝等。
if [ -d $dst ]; then
echo "$dst already exists"
echo "(r) rename existing filesystem (o) overwrite existing filesystem (s) skip filesystem extraction"
read -p "[r] " exists
case "$exists" in
s) echo "Skipping filesystem extraction"
echo "WARNING! Keeping the previous filesystem may cause compatibility problems if you are upgrading the SDK"
;;
o) sudo rm -rf $dst
echo "Old $dst removed"
extract_fs $dst
;;
*) dte="`date +%m%d%Y`_`date +%H`.`date +%M`"
echo "Path for old filesystem:"
read -p "[ $dst.$dte ]" old
if [ ! -n "$old" ]; then
old="$dst.$dte"
fi
sudo mv $dst $old
check_status
echo
echo "Successfully moved old $dst to $old"
extract_fs $dst
;;
esac
else
extract_fs $dst
fi
# 1. 查看
# Qt@aplex:~/ti-processor-sdk-linux-am335x-evm-01.00.00.00$ ls -al
# total 294792
# -rwxr-xr-x 1 Qt Qt 1260 Aug 14 2015 Rules.make
# -rwxr-xr-x 1 Qt Qt 4188 Apr 11 2015 setup.sh
# -rw-rw-r-- 1 Qt Qt 77 Aug 14 2015 .gdbinit
# -rw-rw-r-- 1 Qt Qt 65 Aug 14 2015 .targetfs
# drwxr-xr-x 19 root root 4096 Aug 14 2015 targetNFS
# Qt@aplex:~/ti-processor-sdk-linux-am335x-evm-01.00.00.00$ cat .targetfs
# /home/Qt/ti-processor-sdk-linux-am335x-evm-01.00.00.00/targetNFS
# Qt@aplex:~/ti-processor-sdk-linux-am335x-evm-01.00.00.00$
# Qt@aplex:~/ti-processor-sdk-linux-am335x-evm-01.00.00.00$ cat .gdbinit
# set sysroot /home/Qt/ti-processor-sdk-linux-am335x-evm-01.00.00.00/targetNFS
# 2. 如上可知，.targetfs确实生成了。
echo $dst > $cwd/../.targetfs
echo "set sysroot $dst" > $cwd/../.gdbinit
echo "--------------------------------------------------------------------------------"
# platform=am335x-evm
platform=`grep PLATFORM= $cwd/../Rules.make | cut -d= -f2`
echo
echo "--------------------------------------------------------------------------------"
echo "This step will set up the SDK to install binaries in to:"
echo " $dst/home/root/$platform"
echo
echo "The files will be available from /home/root/$platform on the target."
echo
echo "This setting can be changed later by editing Rules.make and changing the"
echo "EXEC_DIR or DESTDIR variable (depending on your SDK)."
echo
read -p "Press return to continue" REPLY
sed -i "s=EXEC_DIR\=.*$=EXEC_DIR\=$dst/home/root/$platform=g" $cwd/../Rules.make
check_status
# DESTDIR=/home/Qt/ti-processor-sdk-linux-am335x-evm-01.00.00.00/targetNFS
sed -i "s=DESTDIR\=.*$=DESTDIR\=$dst=g" $cwd/../Rules.make
check_status
echo "Rules.make edited successfully.."
echo "--------------------------------------------------------------------------------"
echo
echo "--------------------------------------------------------------------------------"
echo "This step will export your target filesystem for NFS access."
echo
echo "Note! This command requires you to have administrator priviliges (sudo access) "
echo "on your host."
read -p "Press return to continue" REPLY
# 检查NFS的路径是否已经设置了，如果设置了，那么就调过，如果没有设置，那么重新设置。
grep $dst /etc/exports > /dev/null
if [ "$?" -eq "0" ]; then
echo "$dst already NFS exported, skipping.."
else
sudo chmod 666 /etc/exports
check_status
sudo echo "$dst *(rw,nohide,insecure,no_subtree_check,async,no_root_squash)" >> /etc/exports
check_status
sudo chmod 644 /etc/exports
check_status
fi
echo
sudo /etc/init.d/nfs-kernel-server stop # 关闭nfs服务器
check_status
sleep 1
sudo /etc/init.d/nfs-kernel-server start # 打开nfs服务为，是配置有效
check_status
echo "--------------------------------------------------------------------------------"
