Difference between revisions of "i.MX53 SODIMM PC Debian"
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=== Download installation files === | === Download installation files === | ||
| + | As the official Debian server does not contain these important files anymore, an alternate source can be used instead: | ||
<syntaxhighlight lang="bash"> | <syntaxhighlight lang="bash"> | ||
| − | wget | + | wget https://github.com/PhilipDeegan/qemu/raw/master/arm/os/debian/initrd.gz |
| − | wget | + | wget https://github.com/PhilipDeegan/qemu/raw/master/arm/os/debian/vmlinuz-3.2.0-4-vexpress |
</syntaxhighlight> | </syntaxhighlight> | ||
| − | + | The original path where these files were located on Debian server: | |
<syntaxhighlight lang="bash"> | <syntaxhighlight lang="bash"> | ||
| − | wget | + | # wget http://ftp.debian.org/debian/dists/stable/main/installer-armhf/current/images/vexpress/netboot/initrd.gz |
| − | wget | + | # wget http://ftp.debian.org/debian/dists/stable/main/installer-armhf/current/images/vexpress/netboot/vmlinuz-3.2.0-4-vexpress |
</syntaxhighlight> | </syntaxhighlight> | ||
Latest revision as of 13:08, 24 April 2022
Altering and building Debian filesytem suitable for i.MX53 SODIMM PC - Development Kit is shown in this section. Debian is a free operating system and an excellent choice for embedded solutions. More information about Debian project can be found on the official website.
Initial steps
Create working directory
mkdir -pv ~/workdir/vmx53/rootfs/debian7 cd ~/workdir/vmx53/rootfs/debian7
Download installation files
As the official Debian server does not contain these important files anymore, an alternate source can be used instead:
wget https://github.com/PhilipDeegan/qemu/raw/master/arm/os/debian/initrd.gz wget https://github.com/PhilipDeegan/qemu/raw/master/arm/os/debian/vmlinuz-3.2.0-4-vexpress
The original path where these files were located on Debian server:
# wget http://ftp.debian.org/debian/dists/stable/main/installer-armhf/current/images/vexpress/netboot/initrd.gz # wget http://ftp.debian.org/debian/dists/stable/main/installer-armhf/current/images/vexpress/netboot/vmlinuz-3.2.0-4-vexpress
Install Debian into emulated machine
Create virtual HDD
qemu-img create -f raw ramdisk.img 2G
Install Debian
qemu-system-arm -m 256 -machine vexpress-a9 \
-kernel vmlinuz-3.2.0-4-vexpress \
-initrd initrd.gz \
-sd ramdisk.img -append "root=/dev/ram"
Extract installed filesystem
Find partition start offset
hexdump -C ramdisk.img | less 00000000 fa b8 00 10 8e d0 bc 00 b0 b8 00 00 8e d8 8e c0 |................| 00000010 fb be 00 7c bf 00 06 b9 00 02 f3 a4 ea 21 06 00 |...|.........!..| 00000020 00 be be 07 38 04 75 0b 83 c6 10 81 fe fe 07 75 |....8.u........u| 00000030 f3 eb 16 b4 02 b0 01 bb 00 7c b2 80 8a 74 01 8b |.........|...t..| 00000040 4c 02 cd 13 ea 00 7c 00 00 eb fe 00 00 00 00 00 |L.....|.........| 00000050 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| * 000001b0 00 00 00 00 00 00 00 00 d2 63 00 00 00 00 80 20 |.........c..... | 000001c0 21 00 83 f3 6f 04 00 08 00 00 00 f0 3f 00 00 00 |!...o.......?...| 000001d0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| * 000001f0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 55 aa |..............U.| 00000200 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| * 00100000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| << here starts first partition * 00100400 00 00 02 00 00 fe 07 00 4c 66 00 00 70 e9 05 00 |........Lf..p...| 00100410 fb 98 01 00 00 00 00 00 02 00 00 00 02 00 00 00 |................|
Copy the filesystem
mkdir -pv mount mkdir -pv rootfs-debian7 sudo chown root:root rootfs-debian7 sudo mount -t ext4 -o loop,offset=1048576 ramdisk.img mount/ sudo cp -arvpf mount/* rootfs-debian7/ sudo umount mount/
Modifications
Remove persistent rules
#sudo rm rootfs-debian7/etc/udev/rules.d/70-persistent* sudo sed -i '/^#/!d' rootfs-debian7/etc/fstab #sudo sed -i 's/iface eth0/#iface eth0/g' rootfs-debian7/etc/network/interfaces
Enable serial console
sudo su cat >> rootfs-debian7/etc/inittab << EOF # VMX53 serial console T0:2345:respawn:/sbin/getty -L ttymxc0 115200 vt100 EOF exit
Add valid nameservers
sudo su cat > rootfs-debian7/etc/resolv.conf << EOF domain example.org search example.org nameserver 8.8.8.8 nameserver 8.8.4.4 EOF exit
Disable some services
sudo su #sed -i 's/^test -x \/usr\/lib\/exim4\/exim4/test ! -x \/usr\/lib\/exim4\/exim4/' rootfs-debian7/etc/init.d/exim4 exit
Add Voipac logo
cat << EOF > rootfs-debian7/etc/logo.sh
sudo su
#!/bin/sh
NORMAL="
\\033[0;39m" # Standard console grey
SUCCESS="
\\033[1;32m" # Success is green
WARNING="
\\033[1;33m" # Warnings are yellow
FAILURE="
\\033[1;31m" # Failures are red
INFO="
\\033[1;36m" # Information is light cyan
BRACKET="
\\033[1;34m" # Brackets are blue
ramt=\$(cat /proc/meminfo | grep MemTotal | awk '{print \$2}')
ramt=\$((ramt/1024))
ramf=\$(cat /proc/meminfo | grep MemFree | awk '{print \$2}')
ramf=\$((ramf/1024))
romt=\$(df -h | grep root | head -n1 | awk '{print \$2"B"}')
romf=\$(df -h | grep root | head -n1 | awk '{print \$4"B"}')
root=\$(mount | grep -v '^rootfs' | grep root | awk '{print \$5}')
ipaddr=\$(ifconfig eth0 | grep "inet addr" | cut -d ":" -f2 | cut -d " " -f1)
echo " _ "
echo -n " :_; "
echo " \$(cat /proc/cpuinfo | grep -i 'Hardware' | awk '{print \$1": "\$3" "\$4}')"
echo ".-..-. .--. .-..---. .--. .--. "
echo -n ":
\`; :' .; :: :: .;
\`' .; ; ' ..'"
printf " RAM:%06sMB FREE:%06sMB\n" \${ramt} \${ramf}
echo -n "
\`.__.'
\`.__.':_;: ._.'
\`.__,_;
\`.__.'"
printf " ROM:%08s FREE:%08s\n" \${romt} \${romf}
echo -n " : : "
echo " ROOT: \${SUCCESS}\${root}\${NORMAL}"
echo -n " :_; "
echo " IP: \${ipaddr}"
EOF
chmod a+x rootfs-debian7/etc/logo.sh
sed -i '/^exit/d' rootfs-debian7/etc/rc.local cat << EOF >> rootfs-debian7/etc/rc.local # Voipac logo . /etc/logo.sh exit 0 EOF exit
Strip down filesystem even more
sudo apt-get install qemu-user-static sudo cp -arvp rootfs-debian7 rootfs-debian7-tiny sudo apt-get install qemu-user-static sudo cp /usr/bin/qemu-arm-static rootfs-debian7-tiny/usr/bin sudo chroot rootfs-debian7-tiny apt-get install localepurge sudo chroot rootfs-debian7-tiny localepurge #sudo chroot rootfs-debian7-tiny dpkg --get-selections sudo chroot rootfs-debian7-tiny apt-get purge linux-image-vexpress sudo chroot rootfs-debian7-tiny apt-get purge linux-image-3.2.0-4-vexpress
Final filesystem packages
NFS
sudo cp -arvpf rootfs-debian7/ /srv/nfs/rootfs-debian7-vmx53 /srv/nfs/rootfs-debian7-vmx53 *(rw,no_root_squash,no_all_squash,no_subtree_check,sync) sudo exportfs -ra
TAR
cd rootfs-debian7-tiny/ sudo tar cvJpf ../rootfs-debian7-nfs_vmx53_$(date "+%Y%m%d").tar.xz *
UBIFS
NAND Flash up to 512MB
export fs_direcotry=/home/marek/workdir/vmx53/rootfs/debian7/rootfs-debian7-tiny/
export fs_ubifs_image=rootfs-debian7-ubifs-m2k-e128k-512M_vmx53_$(date "+%Y%m%d").bin
sudo mkfs.ubifs -m 2048 -e 129024 -c 4080 -r ${fs_direcotry} -o ${fs_ubifs_image}
cp -av ${fs_ubifs_image} /srv/tftp/vmx53/
NAND Flash 1GB
export fs_direcotry=/home/marek/workdir/vmx53/rootfs/debian7/rootfs-debian7-tiny/
export fs_ubifs_image=rootfs-debian7-ubifs-m4k-e512k-1G_vmx53_$(date "+%Y%m%d").bin
sudo mkfs.ubifs -m 4096 -e 520192 -c 2000 -r ${fs_direcotry} -o ${fs_ubifs_image}
cp -av ${fs_ubifs_image} /srv/tftp/vmx53/
NAND Flash 4GB
export fs_direcotry=/home/marek/workdir/vmx53/rootfs/debian7/rootfs-debian7-tiny/
export fs_ubifs_image=rootfs-debian7-ubifs-m4k-e1M-4G_vmx53_$(date "+%Y%m%d").bin
sudo mkfs.ubifs -m 4096 -e 1040384 -c 4080 -r ${fs_direcotry} -o ${fs_ubifs_image}
cp -av ${fs_ubifs_image} /srv/tftp/vmx53/