#!/bin/sh # # ti processor sdk linux am335x evm /bin/setup-uboot-env.sh hacking # 说明： # 本文主要对TI的sdk中的setup-uboot-env.sh脚本进行解读，是为了了解 # 其工作机制，另外了解到minicom原来是可以用脚本来和开发板进行交互的。 # # 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 do_expect() { echo "expect {" >> $3 check_status echo " $1" >> $3 check_status echo "}" >> $3 check_status echo $2 >> $3 check_status echo >> $3 } echo echo "--------------------------------------------------------------------------------" echo "This step will set up the U-Boot variables for booting the EVM." echo # # Qt@aplex:~/ti-processor-sdk-linux-am335x-evm-01.00.00.00$ ifconfig | grep 'inet addr:'| grep -v '127.0.0.1' | cut -d: -f2 | awk '{ print $1 }' # 192.168.236.130 # Qt@aplex:~/ti-processor-sdk-linux-am335x-evm-01.00.00.00$ ifconfig | grep 'inet addr:' # inet addr:192.168.236.130 Bcast:192.168.236.255 Mask:255.255.255.0 # inet addr:127.0.0.1 Mask:255.0.0.0 # Qt@aplex:~/ti-processor-sdk-linux-am335x-evm-01.00.00.00$ ifconfig # eth0 Link encap:Ethernet HWaddr 00:0c:29:52:ca:98 # inet addr:192.168.236.130 Bcast:192.168.236.255 Mask:255.255.255.0 # inet6 addr: fe80::20c:29ff:fe52:ca98/64 Scope:Link # UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 # RX packets:4726 errors:0 dropped:0 overruns:0 frame:0 # TX packets:2321 errors:0 dropped:0 overruns:0 carrier:0 # collisions:0 txqueuelen:1000 # RX bytes:6424263 (6.4 MB) TX bytes:164155 (164.1 KB) # Interrupt:19 Base address:0x2024 # # lo Link encap:Local Loopback # inet addr:127.0.0.1 Mask:255.0.0.0 # inet6 addr: ::1/128 Scope:Host # UP LOOPBACK RUNNING MTU:16436 Metric:1 # RX packets:88 errors:0 dropped:0 overruns:0 frame:0 # TX packets:88 errors:0 dropped:0 overruns:0 carrier:0 # collisions:0 txqueuelen:0 # RX bytes:7092 (7.0 KB) TX bytes:7092 (7.0 KB) # # Qt@aplex:~/ti-processor-sdk-linux-am335x-evm-01.00.00.00$ ifconfig | grep 'inet addr:' # inet addr:192.168.236.130 Bcast:192.168.236.255 Mask:255.255.255.0 # inet addr:127.0.0.1 Mask:255.0.0.0 # Qt@aplex:~/ti-processor-sdk-linux-am335x-evm-01.00.00.00$ ifconfig | grep 'inet addr:'| grep -v '127.0.0.1' # inet addr:192.168.236.130 Bcast:192.168.236.255 Mask:255.255.255.0 # Qt@aplex:~/ti-processor-sdk-linux-am335x-evm-01.00.00.00$ ifconfig | grep 'inet addr:'| grep -v '127.0.0.1' | cut -d: -f2 # 192.168.236.130 Bcast # Qt@aplex:~/ti-processor-sdk-linux-am335x-evm-01.00.00.00$ ifconfig | grep 'inet addr:'| grep -v '127.0.0.1' | cut -d: -f2 | awk '{ print $1 }' # 192.168.236.130 # Qt@aplex:~/ti-processor-sdk-linux-am335x-evm-01.00.00.00$ # ipdefault=`ifconfig | grep 'inet addr:'| grep -v '127.0.0.1' | cut -d: -f2 | awk '{ print $1 }'` # platform=am335x-evm platform=`grep PLATFORM= $cwd/../Rules.make | cut -d= -f2` echo "Autodetected the following ip address of your host, correct it if necessary" # 采用自动获取的IP还是手动设置的IP read -p "[ $ipdefault ] " ip echo if [ ! -n "$ip" ]; then ip=$ipdefault fi # 设置NFS根文件目录 if [ -f $cwd/../.targetfs ]; then rootpath=`cat $cwd/../.targetfs` else echo "Where is your target filesystem extracted?" read -p "[ ${HOME}/targetNFS ]" rootpath if [ ! -n "$rootpath" ]; then rootpath="${HOME}/targetNFS" fi echo fi # 设置kernel相关的变量 kernelimage="zImage-""$platform"".bin" kernelimagesrc=`ls -1 $cwd/../board-support/prebuilt-images/$kernelimage` kernelimagedefault=`basename $kernelimagesrc` # 设置Linux kernel位置，TFTP还是SD card中 echo "Select Linux kernel location:" echo " 1: TFTP" echo " 2: SD card" echo read -p "[ 1 ] " kernel if [ ! -n "$kernel" ]; then kernel="1" fi # 设置文件系统路径，NFS还是SD card中 echo echo "Select root file system location:" echo " 1: NFS" echo " 2: SD card" echo read -p "[ 1 ] " fs if [ ! -n "$fs" ]; then fs="1" fi if [ "$kernel" -eq "1" ]; then echo echo "Available kernel images in /tftproot:" for file in /tftpboot/*; do basefile=`basename $file` echo " $basefile" done echo echo "Which kernel image do you want to boot from TFTP?" read -p "[ $kernelimagedefault ] " kernelimage if [ ! -n "$kernelimage" ]; then kernelimage=$kernelimagedefault fi fi isBB="n" isBBBlack="n" isBBrevA3="n" configBB="n" # 个人认为这里是Ubuntu PC机已经和开发板通过USB连接了，然后这里就可以自动检测出开发板的类型。 check_for_beaglebone() { # First check if there is a rev A3 board which uses the custom VID/PID # combination lsusb -d 0403:a6d0 > /dev/null if [ "$?" = "0" ] then # We found a beaglebone isBB="y" isBBrevA3="y" return fi # Now let's check for a standard VID/PID like newer BeagleBones have sudo lsusb -vv -d 0403:6010 | grep "Product" | grep "BeagleBone" > /dev/null if [ "$?" = "0" ] then isBB="y" return fi # Now let's check for EVM-SK sudo lsusb -vv -d 0403:6010 | grep "Product" | grep "EVM-SK" > /dev/null if [ "$?" = "0" ] then isBB="y" return fi # Now let's check for BeagleBone Black sudo lsusb -vv -d 0403:6001 > /dev/null if [ "$?" = "0" ] then isBB="y" isBBBlack="y" return fi } # # Qt@aplex:~/ti-processor-sdk-linux-am335x-evm-01.00.00.00/bin$ ls -al setupBoard.minicom # -rw-rw-r-- 1 Qt Qt 601 Aug 14 2015 setupBoard.minicom # Qt@aplex:~/ti-processor-sdk-linux-am335x-evm-01.00.00.00/bin$ cat setupBoard.minicom # timeout 300 # verbose on # expect { # "stop autoboot:" # } # send " " # # expect { # "U-Boot#" # } # send "env default -f -a" # # expect { # "U-Boot#" # } # send "saveenv" # # expect { # "U-Boot#" # } # send "reset" # # expect { # "stop autoboot:" # } # send " " # # expect { # "U-Boot#" # } # send "setenv ip_method none" # # expect { # "U-Boot#" # } # send "setenv bootfile zImage" # # expect { # "U-Boot#" # } # send setenv bootcmd 'mmc rescan; run loadimage; run findfdt; run loadfdt; run mmcargs; bootz ${loadaddr} - ${fdtaddr}' # # expect { # "U-Boot#" # } # send "saveenv" # # expect { # "U-Boot#" # } # send "boot" # # ! killall -s SIGHUP minicom # Qt@aplex:~/ti-processor-sdk-linux-am335x-evm-01.00.00.00/bin$ echo "timeout 300" > $cwd/setupBoard.minicom echo "verbose on" >> $cwd/setupBoard.minicom do_expect ""stop autoboot:"" "send " "" $cwd/setupBoard.minicom do_expect ""U-Boot#"" "send "env default -f -a"" $cwd/setupBoard.minicom do_expect ""U-Boot#"" "send "saveenv"" $cwd/setupBoard.minicom do_expect ""U-Boot#"" "send "reset"" $cwd/setupBoard.minicom do_expect ""stop autoboot:"" "send " "" $cwd/setupBoard.minicom # 根据前面的配置，将相关参数设置到setupBoard.minicom对应的文件里。 if [ "$kernel" -eq "1" ]; then if [ "$fs" -eq "1" ]; then #TFTP and NFS Boot do_expect ""U-Boot#"" "send "setenv serverip $ip"" $cwd/setupBoard.minicom do_expect ""U-Boot#"" "send setenv rootpath '$rootpath'" $cwd/setupBoard.minicom do_expect ""U-Boot#"" "send "setenv bootfile $kernelimage"" $cwd/setupBoard.minicom do_expect ""U-Boot#"" "send "setenv ip_method dhcp"" $cwd/setupBoard.minicom do_expect ""U-Boot#"" "send setenv bootcmd 'run findfdt; setenv autoload no;dhcp ;tftp ${loadaddr} $kernelimage; tftp ${fdtaddr} ${fdtfile}; run netargs; bootz ${loadaddr} - ${fdtaddr}'" $cwd/setupBoard.minicom do_expect ""U-Boot#"" "send "saveenv"" $cwd/setupBoard.minicom do_expect ""U-Boot#"" "send "boot"" $cwd/setupBoard.minicom else #TFTP and SD Boot do_expect ""U-Boot#"" "send "setenv serverip $ip"" $cwd/setupBoard.minicom do_expect ""U-Boot#"" "send "setenv bootfile $kernelimage"" $cwd/setupBoard.minicom do_expect ""U-Boot#"" "send "setenv ip_method none"" $cwd/setupBoard.minicom do_expect ""U-Boot#"" "send setenv bootcmd 'run findfdt; setenv autoload no; dhcp ; tftp ${loadaddr} $kernelimage; tftp ${fdtaddr} ${fdtfile}; run mmcargs; bootz ${loadaddr} - ${fdtaddr}'" $cwd/setupBoard.minicom do_expect ""U-Boot#"" "send "saveenv"" $cwd/setupBoard.minicom do_expect ""U-Boot#"" "send "boot"" $cwd/setupBoard.minicom fi else if [ "$fs" -eq "1" ]; then #SD and NFS Boot do_expect ""U-Boot#"" "send "setenv serverip $ip"" $cwd/setupBoard.minicom do_expect ""U-Boot#"" "send setenv rootpath '$rootpath'" $cwd/setupBoard.minicom do_expect ""U-Boot#"" "send "setenv bootfile zImage"" $cwd/setupBoard.minicom do_expect ""U-Boot#"" "send "setenv ip_method dhcp"" $cwd/setupBoard.minicom do_expect ""U-Boot#"" "send setenv bootcmd 'setenv autoload no; mmc rescan; run loadimage; run findfdt; run loadfdt; run netargs; bootz ${loadaddr} - ${fdtaddr}'" $cwd/setupBoard.minicom do_expect ""U-Boot#"" "send "saveenv"" $cwd/setupBoard.minicom do_expect ""U-Boot#"" "send "boot"" $cwd/setupBoard.minicom else #SD and SD boot. do_expect ""U-Boot#"" "send "setenv ip_method none"" $cwd/setupBoard.minicom do_expect ""U-Boot#"" "send "setenv bootfile zImage"" $cwd/setupBoard.minicom do_expect ""U-Boot#"" "send setenv bootcmd 'mmc rescan; run loadimage; run findfdt; run loadfdt; run mmcargs; bootz ${loadaddr} - ${fdtaddr}'" $cwd/setupBoard.minicom do_expect ""U-Boot#"" "send "saveenv"" $cwd/setupBoard.minicom do_expect ""U-Boot#"" "send "boot"" $cwd/setupBoard.minicom fi fi echo "! killall -s SIGHUP minicom" >> $cwd/setupBoard.minicom echo "--------------------------------------------------------------------------------" echo "Would you like to create a minicom script with the above parameters (y/n)?" read -p "[ y ] " minicom echo if [ ! -n "$minicom" ]; then minicom="y" fi if [ "$minicom" = "y" ]; then echo -n "Successfully wrote " # readlink是linux系统中一个常用工具，主要用来找出符号链接所指向的位置 readlink -m $cwd/setupBoard.minicom fi # 检查是否有设备已经连接上来了，如果有设备已经连接，那么设置对应的配置。 while [ yes ] do # 检查开发板类型 check_for_beaglebone if [ "$isBB" = "y" ] then echo "" echo "A BeagleBone (Black) or StarterKit board has been detected" echo "Do you want to configure U-Boot for one of the boards mentioned" echo "above? An answer of 'n' will configure U-Boot for the" echo "General Purpose EVM instead" read -p "(y/n) " configBB echo if [ "$configBB" = "y" ] || [ "$configBB" = "n" ] then break else echo "Invalid response" echo continue fi else echo "" echo "No BeagleBone (Black) or StarterKit detected. Assuming" echo "general purpose evm is being used. Is this correct?" read -p "(y/n) " validevm echo "" if [ "$validevm" = "y" ] then configBB="n" break else if [ "$validevm" != "n" ] then echo "Invalid response" echo continue fi echo "Please connect the Beaglebone (Black) or StarterKit to the PC" echo "If your using the StarterKit board make sure it is turned on" read -p "Press any key to try checking again." temp fi fi done # 如果插入的是BB开发板 if [ "$configBB" = "y" ] then ftdiInstalled=`lsmod | grep ftdi_sio` if [ -z "$ftdiInstalled" ]; then #Add the ability to regconize the BeagleBone as two serial ports if [ "$isBBrevA3" = "y" ] then echo "Finishing install by adding drivers for Beagle Bone..." # 添加Beagle Bone USB驱动 sudo modprobe -q ftdi_sio vendor=0x0403 product=0xa6d0 #Create uDev rule # 添加Beagle Bone udev规则 echo "# Load ftdi_sio driver including support for XDS100v2." > $cwd/99-custom.rules echo "SYSFS{idVendor}=="0403", SYSFS{idProduct}=="a6d0", \" >> $cwd/99-custom.rules echo "RUN+="/sbin/modprobe -q ftdi_sio vendor=0x0403 product=0xa6d0"" >> $cwd/99-custom.rules sudo cp $cwd/99-custom.rules /etc/udev/rules.d/ rm $cwd/99-custom.rules else sudo modprobe -q ftdi_sio fi fi #infinite loop to look for board unless user asks to stop # 循环检查开发板是否连接上PC while [ yes ] do echo "Detecting connection to board..." loopCount=0 port=`dmesg | grep FTDI | grep "tty" | tail -1 | grep "attached" | awk '{ print $NF }'` while [ -z "$port" ] && [ "$loopCount" -ne "10" ] do #count to 10 and timeout if no connection is found loopCount=$((loopCount+1)) sleep 1 port=`dmesg | grep FTDI | grep "tty" | tail -1 | grep "attached" | awk '{ print $NF }'` done #check to see if we actually found a port if [ -n "$port" ]; then break; fi #if we didn't find a port and reached the timeout limit then ask to reconnect if [ -z "$port" ] && [ "$loopCount" = "10" ]; then echo "" echo "Unable to detect which port the board is connected to." echo "Please reconnect your board." echo "Press 'y' to attempt to detect your board again or press 'n' to continue..." read -p "(y/n)" retryBoardDetection fi #if they choose not to retry, ask user to reboot manually and exit if [ "$retryBoardDetection" = "n" ]; then echo "" echo "Please reboot your board manually and connect using minicom." exit; fi done #Change minicom to accurately reflect the bone # 重新配饰minicom参数 minicomcfg=${HOME}/.minirc.dfl echo "pu port /dev/$port pu baudrate 115200 pu bits 8 pu parity N pu stopbits 1 pu minit pu mreset pu mdialpre pu mdialsuf pu mdialpre2 pu mdialsuf2 pu mdialpre3 pu mdialsuf3 pu mconnect pu mnocon1 NO CARRIER pu mnocon2 BUSY pu mnocon3 NO DIALTONE pu mnocon4 VOICE pu rtscts No" | tee $minicomcfg > /dev/null check_status fi echo "Would you like to run the setup script now (y/n)? For the general purpose evm " echo "you must now connect the RS-232 cable to your evm now. For the Beaglebone (Black)" echo "or StarterKit this step should of already have been done. Also connect the ethernet" echo "cable as described in the Quick Start Guide." echo "**Important**" echo "Once answering 'y' on the prompt below you will have 300 seconds to turn on the" echo "board or if it was already on reboot the board before the setup times out" echo echo "After successfully executing this script, your board will be set up. You will be " echo "able to connect to it by executing 'minicom -w' or if you prefer a windows host" echo "you can set up Tera Term as explained in the Software Developer's Guide." echo "If you connect minicom or Tera Term and power cycle the board Linux will boot." echo read -p "[ y ] " minicomsetup if [ ! -n "$minicomsetup" ]; then minicomsetup="y" fi if [ "$minicomsetup" = "y" ]; then cd $cwd # 这里相当于用minicom运行minicom脚本 sudo minicom -w -S setupBoard.minicom cd - fi echo "You can manually run minicom in the future with this setup script using: minicom -S $cwd/setupBoard.minicom" echo "--------------------------------------------------------------------------------"