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qi-add-6410-bootable-sdcard-generator.patch

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This patch adds a small script that knows how to partition, format and
prepare with a bootloader image an SD Card for usage with SD Card boot
on 6410.

You use it like this:

./6410-partition-sd.sh sde sdhc ./image/qi-s3c6410-andy_495294c60f2f1432

This will prepare your card with three partitions and put the bootloader
images at the end as required by 6410 iROM.

If you put anything on the fourth parameter, it skips the fdisk and the
formatting stages and just updates the bootloader.

Signed-off-by: Andy Green <andy@openmoko.com>
This commit is contained in:
Andy Green 2008-11-28 10:16:40 +00:00 committed by Andy Green
parent cd9d23c6ec
commit f82d4861e6
1 changed files with 125 additions and 0 deletions
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125
qiboot/6410-partition-sd.sh Executable file
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#!/bin/sh
# 6410 SD Boot formatter
# (C) 2008 Openmoko, Inc
# Author: Andy Green <andy@openmoko.com>
# LAYOUT
# Partition table, then
# VFAT takes up remaining space here
# then...
#
EXT3_ROOTFS_SECTORS=$(( 64 * 1024 * 2 ))
EXT3_BACKUP_FS_SECTORS=$(( 8 * 1024 * 2 ))
QI_ALLOCATION=$(( 256 * 2 ))
#
# lastly fixed stuff: 8KByte initial boot, sig, padding
# ----------------------
echo "s3c6410 bootable SD partitioning utility"
echo "(C) Openmoko, Inc Andy Green <andy@openmoko.com>"
echo
# these are fixed in iROM
QI_INITIAL=$(( 8 * 2 ))
SIG=1
FDISK_SCRIPT=/tmp/_fds
if [ -z $1 -o -z $2 -o -z $3 ] ; then
echo "This formats a SD card for usage on SD Card boot"
echo " on 6410 based systems"
echo
echo "Usage:"
echo
echo "$0 <device for SD, eg, sde> <sd|sdhc> <bootloader>"
exit 1
fi
if [ $2 = "sdhc" ] ; then
PADDING=1025
else
PADDING=1
fi
EXT3_TOTAL_SECTORS=$(( $EXT3_ROOTFS_SECTORS + $EXT3_BACKUP_FS_SECTORS ))
REARSECTORS=$(( $QI_ALLOCATION + $QI_INITIAL + $SIG + $PADDING ))
if [ ! -z "`grep $1 /proc/mounts`" ] ; then
echo "ERROR $1 seems to be mounted, that ain't right"
exit 2
fi
SECTORS=`dmesg | grep $1 | grep "512-byte hardware" | tail -n 1 | cut -d' ' -f4`
if [ $SECTORS -le 0 ] ; then
echo "problem finding size for /dev/$1"
exit 3
fi
if [ -z "$4" ] ; then
echo "$1 is $SECTORS 512-byte blocks"
FATSECTORS=$(( $SECTORS - $EXT3_TOTAL_SECTORS + $REARSECTORS ))
FATMB=$(( $FATSECTORS / 2048 - 16 ))
echo "Creating VFAT section $FATMB MB"
# create the script for fdisk
# clear the existing partition table
echo "o" >$FDISK_SCRIPT
# add main VFAT storage partition
echo "n" >>$FDISK_SCRIPT
echo "p" >>$FDISK_SCRIPT
echo "1" >>$FDISK_SCRIPT
# first partition == 1
echo "1" >>$FDISK_SCRIPT
echo "+$FATMB"M >>$FDISK_SCRIPT
# add the normal EXT3 rootfs
echo "n" >>$FDISK_SCRIPT
echo "p" >>$FDISK_SCRIPT
echo "2" >>$FDISK_SCRIPT
# continue after last
echo "" >>$FDISK_SCRIPT
echo "+$(( $EXT3_ROOTFS_SECTORS / 2048 ))"M >>$FDISK_SCRIPT
# add the backup EXT3 rootfs
echo "n" >>$FDISK_SCRIPT
echo "p" >>$FDISK_SCRIPT
echo "3" >>$FDISK_SCRIPT
# continue after last
echo "" >>$FDISK_SCRIPT
echo "+$(( $EXT3_BACKUP_FS_SECTORS / 2048 ))"M >>$FDISK_SCRIPT
# commit it and exit
echo "w" >>$FDISK_SCRIPT
echo "q" >>$FDISK_SCRIPT
# do the partitioning action
fdisk /dev/$1 <$FDISK_SCRIPT
# prep the filesystems
mkfs.vfat "/dev/$1"1 -n main-vfat
mkfs.ext3 "/dev/$1"2 -L rootfs
mkfs.ext3 "/dev/$1"3 -L backupfs
fi # if -z $4
# copy the full bootloader image to the right place after the
# partitioned area
dd if=$3 of=/dev/$1 bs=512 count=512 \
seek=$(( $SECTORS - $REARSECTORS ))
dd if=$3 of=/dev/$1 bs=512 \
seek=$(( $SECTORS - $REARSECTORS + $QI_ALLOCATION )) \
count=$QI_INITIAL
dd if=/dev/zero of=/dev/$1 bs=512 \
seek=$(( $SECTORS - $REARSECTORS + $QI_ALLOCATION + $QI_INITIAL )) \
count=$(( $SIG + $PADDING ))
# done
echo
echo "**** completed"