Difference between revisions of "Debian-10-sdcard-20200417"

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== Yocto Linux SD card image ==
 
== Yocto Linux SD card image ==
 
e.g.
 
 
 
 
<syntaxhighlight lang="bash">
 
<syntaxhighlight lang="bash">
 
SDIMAGE=5720A1AIM20LIV90100_iMX8M_2020-04-03.img # i.MX8 ROM-5720
 
SDIMAGE=5720A1AIM20LIV90100_iMX8M_2020-04-03.img # i.MX8 ROM-5720
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== duplicate from Yocto SDcard image ==
 
== duplicate from Yocto SDcard image ==
 
 
 
<syntaxhighlight lang="bash">
 
<syntaxhighlight lang="bash">
 
DEBIMAGE=`sed "s/AIM20//; s/LIV/DIV/" <<< ${SDIMAGE%%_*}`_Debian10_base.img
 
DEBIMAGE=`sed "s/AIM20//; s/LIV/DIV/" <<< ${SDIMAGE%%_*}`_Debian10_base.img
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</syntaxhighlight>
 
</syntaxhighlight>
 
== restore rootfs ==
 
== restore rootfs ==
 
 
 
<syntaxhighlight lang="bash">
 
<syntaxhighlight lang="bash">
 
sudo mount -o offset=$((PL*512)) $DEBIMAGE $MNT
 
sudo mount -o offset=$((PL*512)) $DEBIMAGE $MNT
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</syntaxhighlight>
 
</syntaxhighlight>
 
== set hostname ==
 
== set hostname ==
 
 
<syntaxhighlight lang="bash">
 
<syntaxhighlight lang="bash">
 
HOST=RSB-3430 # for RSB-3430
 
HOST=RSB-3430 # for RSB-3430
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</syntaxhighlight>
 
</syntaxhighlight>
 
== restore modules & firmware ==
 
== restore modules & firmware ==
 
 
 
<syntaxhighlight lang="bash">
 
<syntaxhighlight lang="bash">
 
sudo tar zxvf $BACKUPDIR/lib_modules.tgz -C $MNT
 
sudo tar zxvf $BACKUPDIR/lib_modules.tgz -C $MNT
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== write to SD card ==
 
== write to SD card ==
 
 
 
<syntaxhighlight lang="bash">
 
<syntaxhighlight lang="bash">
 
sudo dd if=$DEBIMAGE of=${SD_DEVICE} bs=1M conv=fsync status=progress
 
sudo dd if=$DEBIMAGE of=${SD_DEVICE} bs=1M conv=fsync status=progress
 
</syntaxhighlight>
 
</syntaxhighlight>

Revision as of 07:47, 17 April 2020


Host Prerequisites

Debian 10 rootfs tarball

Ref. keep the rootfs for future use


Yocto Linux SD card image

SDIMAGE=5720A1AIM20LIV90100_iMX8M_2020-04-03.img # i.MX8 ROM-5720
SDIMAGE=3430A1LIV8940_DualQuad_2019-04-29.img # i.MX6 RSB-3430

backup modules and firmware

BACKUPDIR=~/${SDIMAGE%%_*}
mkdir $BACKUPDIR
MNT=~/mnt
mkdir -p $MNT
PL=`fdisk -lu $SDIMAGE | grep "${SDIMAGE}2" | awk '{print $2}'`
sudo mount -o ro,offset=$((PL*512)) $SDIMAGE $MNT
sudo tar zcvf $BACKUPDIR/lib_modules.tgz -C $MNT lib/modules
sudo tar zcvf $BACKUPDIR/lib_firmware.tgz -C $MNT lib/firmware
sudo umount $MNT

Building Procedures

duplicate from Yocto SDcard image

DEBIMAGE=`sed "s/AIM20//; s/LIV/DIV/" <<< ${SDIMAGE%%_*}`_Debian10_base.img
cp $SDIMAGE $DEBIMAGE
mkfs.ext4 -F -E offset=$((PL*512)) $DEBIMAGE

restore rootfs

sudo mount -o offset=$((PL*512)) $DEBIMAGE $MNT
sudo tar zxvf $ROOTFS.tgz -C $MNT/

set hostname

HOST=RSB-3430 # for RSB-3430
HOST=ROM-5720 # for ROM-5720
sudo su -c "echo $HOST > $MNT/etc/hostname"
sudo su -c "echo -e \"127.0.0.1\tlocalhost\n127.0.1.1\t$HOST\n\" > $MNT/etc/hostname"

restore modules & firmware

sudo tar zxvf $BACKUPDIR/lib_modules.tgz -C $MNT
sudo tar zxvf $BACKUPDIR/lib_firmware.tgz -C $MNT
sudo umount $MNT

SDcard image is ready

write to SD card

sudo dd if=$DEBIMAGE of=${SD_DEVICE} bs=1M conv=fsync status=progress