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本帖最后由 kshaojun 于 2017-9-3 16:59 编辑
你好,TQ工程师:
我是按照提供教材烧写失败,如下uboot log,请帮忙分析下,谢谢!
U-Boot 2015.04 (Aug 19 2016 - 14:21:13)
CPU: Freescale i.MX6Q rev1.5 at 792 MHz
CPU: Temperature 34 C
Reset cause: POR
Board: MX6-SabreSD
I2C: ready
DRAM: 2 GiB
MMC: FSL_SDHC: 0, FSL_SDHC: 1, FSL_SDHC: 2
*** Warning - bad CRC, using default environment
Display: CLAA-WVGA (800x480)
In: serial
Out: serial
Err: serial
switch to partitions #0, OK
mmc0 is current device
Net: FEC [PRIME]
Normal Boot
Hit any key to stop autoboot: 0
reading download.img
Error reading cluster
** Unable to read file download.img **
** Can't read partition table on 0:0 **
** Invalid partition 2 **
Kernel image @ 0x12000000 [ 0x000000 - 0x1ffb960 ]
ERROR: Did not find a cmdline Flattened Device Tree
Could not find a valid device tree
=================================================================
create_sdcard.sh
#!/bin/bash
# partition size in MB
BOOTLOAD_RESERVE=8
BOOT_ROM_SIZE=50
SYSTEM_ROM_SIZE=512
CACHE_SIZE=512
RECOVERY_ROM_SIZE=8
VENDER_SIZE=8
MISC_SIZE=8
boot_partition=2
images_partition=1
help() {
bn=`basename $0`
cat << EOF
usage $bn <option> device_node
options:
-h displays this help message
-s only get partition size
-np not partition.
-f flash android image.
EOF
}
# check the if root?
userid=`id -u`
if [ $userid -ne "0" ]; then
echo "you're not root?"
exit
fi
# parse command line
moreoptions=1
node="na"
cal_only=0
flash_images=0
not_partition=0
cp_images=0
not_format_fs=0
while [ "$moreoptions" = 1 -a $# -gt 0 ]; do
case $1 in
-h) help; exit ;;
-s) cal_only=1 ;;
-f) flash_images=1 ;;
-c) cp_images=1 ;;
-np) not_partition=1 ;;
-nf) not_format_fs=1 ;;
*) moreoptions=0; node=$1 ;;
esac
[ "$moreoptions" = 0 ] && [ $# -gt 1 ] && help && exit
[ "$moreoptions" = 1 ] && shift
done
if [ ! -e ${node} ]; then
help
exit
fi
# call sfdisk to create partition table
# get total card size
seprate=40
total_size=`sfdisk -s ${node}`
total_size=`expr ${total_size} / 1024`
image_rom_sizeb=`expr ${total_size} - ${BOOT_ROM_SIZE} - ${BOOTLOAD_RESERVE}`
# create partitions
if [ "${cal_only}" -eq "1" ]; then
cat << EOF
total : ${total_size}MB
image_rom_sizeb: ${image_rom_sizeb}MB
EOF
exit
fi
function format_android
{
echo "formating android images"
umount ${node}${images_partition}
umount ${node}${boot_partition}
mkfs.vfat ${node}${images_partition}
mkfs.vfat ${node}${boot_partition}
}
function copy_images
{
echo "cp images..."
mkdir mountpoint
# dd if=/dev/zero of=${node}${boot_partition} bs=512 count=2
# sync
mount -t vfat ${node}${boot_partition} mountpoint
rm -rf mountpoint/*
sync
cp imx6q-sabresd.dtb mountpoint/.
cp download.img mountpoint/.
# cp u-boot.bin mountpoint/.
# cp boot.img mountpoint/.
# cp system.img mountpoint/.
# cp recovery.img mountpoint/.
sync
umount mountpoint
rm -rf mountpoint
}
function flash_android
{
if [ "${flash_images}" -eq "1" ]; then
echo "flashing android images..."
#dd if=/dev/zero of=${node} bs=512 seek=1536 count=16
dd if=/dev/zero of=${node} bs=512 seek=1024 count=16
dd if=u-boot_for_download.bin of=${node} bs=512 seek=2
# dd if=imx6q-sabresd.dtb of=${node}${boot_partition} bs=512 seek=2
# dd if=download.img of=${node}${boot_partition} bs=512 seek=2048
# dd if=download.img of=${node}${boot_partition}
sync
fi
}
if [ "${cp_images}" -eq "1" ]; then
umount ${node}${images_partition}
umount ${node}${boot_partition}
copy_images
exit
fi
if [[ "${not_partition}" -eq "1" && "${flash_images}" -eq "1" ]] ; then
flash_android
exit
fi
# destroy the partition table
dd if=/dev/zero of=${node} bs=512 count=2
sync
partprobe
fdisk ${node} << EOF
n
p
1
+${image_rom_sizeb}M
n
p
2
w
EOF
# adjust the partition reserve for bootloader.
# if you don't put the uboot on same device, you can remove the BOOTLOADER_ERSERVE
# to have 8M space.
# the minimal sylinder for some card is 4M, maybe some was 8M
# just 8M for some big eMMC 's sylinder
# format the SDCARD/DATA/CACHE partition
part=""
echo ${node} | grep mmcblk > /dev/null
if [ "$?" -eq "0" ]; then
part="p"
fi
format_android
copy_images
flash_android
# For MFGTool Notes:
# MFGTool use mksdcard-android.tar store this script
# if you want change it.
# do following:
# tar xf mksdcard-android.sh.tar
# vi mksdcard-android.sh
# [ edit want you want to change ]
# rm mksdcard-android.sh.tar; tar cf mksdcard-android.sh.tar mksdcard-android.sh
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