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3b3f2857a9
Hello Andy, I am in the process of making a modified 6410-partition.sh and I wonder if there is a mistake in the VFAT partition size: Shouldn't the "+ $REARSECTORS" in the FATSECTORS calculation be a subtraction, otherwise the backupfs will overlap the space reserved for Qi at the end of the SD Card. Please look at this dif to see what I mean:
135 lines
3.0 KiB
Bash
Executable File
135 lines
3.0 KiB
Bash
Executable File
#!/bin/sh
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# 6410 SD Boot formatter
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# (C) 2008 Openmoko, Inc
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# Author: Andy Green <andy@openmoko.com>
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# LAYOUT
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# Partition table, then
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# VFAT takes up remaining space here
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# then...
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#
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EXT3_ROOTFS_SECTORS=$(( 256 * 1024 * 2 ))
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EXT3_BACKUP_FS_SECTORS=$(( 8 * 1024 * 2 ))
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QI_ALLOCATION=$(( 256 * 2 ))
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#
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# lastly fixed stuff: 8KByte initial boot, sig, padding
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# ----------------------
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echo "s3c6410 bootable SD partitioning utility"
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echo "(C) Openmoko, Inc Andy Green <andy@openmoko.com>"
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echo
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# these are fixed in iROM
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QI_INITIAL=$(( 8 * 2 ))
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SIG=1
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FDISK_SCRIPT=/tmp/_fds
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if [ -z "$1" -o -z "$2" -o -z "$3" ] ; then
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echo "This formats a SD card for usage on SD Card boot"
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echo " on 6410 based systems"
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echo
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echo "Usage:"
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echo
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echo "$0 <device for SD, eg, sde> <sd|sdhc> <bootloader>"
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exit 1
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fi
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if [ $2 = "sdhc" ] ; then
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PADDING=1025
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else
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PADDING=1
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fi
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EXT3_TOTAL_SECTORS=$(( $EXT3_ROOTFS_SECTORS + $EXT3_BACKUP_FS_SECTORS ))
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REARSECTORS=$(( $QI_ALLOCATION + $QI_INITIAL + $SIG + $PADDING ))
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if [ ! -z "`grep $1 /proc/mounts`" ] ; then
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echo "ERROR $1 seems to be mounted, that ain't right"
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exit 2
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fi
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bytes=`echo p | fdisk /dev/$1 2>&1 | sed '/^Disk.*, \([0-9]*\) bytes/s//\1/p;d'`
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echo bytes = $bytes
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SECTORS=`expr $bytes / 512`
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if [ -z "$SECTORS" ] ; then
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echo "problem finding size for /dev/$1"
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exit 4
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fi
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if [ "$SECTORS" -le 0 ] ; then
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echo "problem finding size for /dev/$1"
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exit 3
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fi
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echo "$1 is $SECTORS 512-byte blocks"
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if [ -z "$4" ] ; then
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FATSECTORS=$(( $SECTORS - $EXT3_TOTAL_SECTORS - $REARSECTORS ))
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FATMB=$(( $FATSECTORS / 2048 ))
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echo "Creating VFAT section $FATMB MB"
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# create the script for fdisk
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# clear the existing partition table
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echo "o" >$FDISK_SCRIPT
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# add main VFAT storage partition
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echo "n" >>$FDISK_SCRIPT
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echo "p" >>$FDISK_SCRIPT
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echo "1" >>$FDISK_SCRIPT
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# first partition == 1
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echo "" >>$FDISK_SCRIPT
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echo "+$FATMB"M >>$FDISK_SCRIPT
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# add the normal EXT3 rootfs
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echo "n" >>$FDISK_SCRIPT
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echo "p" >>$FDISK_SCRIPT
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echo "2" >>$FDISK_SCRIPT
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# continue after last
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echo "" >>$FDISK_SCRIPT
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echo "+$(( $EXT3_ROOTFS_SECTORS / 2048 ))"M >>$FDISK_SCRIPT
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# add the backup EXT3 rootfs
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echo "n" >>$FDISK_SCRIPT
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echo "p" >>$FDISK_SCRIPT
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echo "3" >>$FDISK_SCRIPT
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# continue after last
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echo "" >>$FDISK_SCRIPT
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echo "+$(( $EXT3_BACKUP_FS_SECTORS / 2048 ))"M >>$FDISK_SCRIPT
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# commit it and exit
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echo "w" >>$FDISK_SCRIPT
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echo "q" >>$FDISK_SCRIPT
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# do the partitioning action
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fdisk /dev/$1 <$FDISK_SCRIPT
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# prep the filesystems
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mkfs.vfat "/dev/$1"1 -n main-vfat
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mkfs.ext3 "/dev/$1"2 -L rootfs
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mkfs.ext3 "/dev/$1"3 -L backupfs
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fi # if -z $4
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# copy the full bootloader image to the right place after the
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# partitioned area
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dd if=$3 of=/dev/$1 bs=512 count=512 \
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seek=$(( $SECTORS - $REARSECTORS ))
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dd if=$3 of=/dev/$1 bs=512 \
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seek=$(( $SECTORS - $REARSECTORS + $QI_ALLOCATION )) \
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count=$QI_INITIAL
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dd if=/dev/zero of=/dev/$1 bs=512 \
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seek=$(( $SECTORS - $REARSECTORS + $QI_ALLOCATION + $QI_INITIAL )) \
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count=$(( $SIG + $PADDING ))
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# done
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echo
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echo "**** completed"
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