Hi Felix!
Am 19.10.2016 um 21:43 schrieb Felix Fietkau:
>>>> thanks for your comments. Please take a look:
>>>>
>>>> Am 18.10.2016 um 08:22 schrieb John Crispin:
>>>>
>>>>>> +++ b/target/linux/ipq806x/base-files/lib/preinit/04_set_mtd_ipq806x.sh
>>>>>> @@ -0,0 +1,21 @@
>>>>>> +#
>>>>>> +# Copyright (C) 2009 OpenWrt.org
>>>>>> +#
>>>>>> +
>>>>>> +. /lib/ipq806x.sh
>>>>>> +. /lib/functions/system.sh
>>>>>> +
>>>>>> +preinit_assign_mtd2block() {
>>>>>> + case $(ipq806x_board_name) in
>>>>>> + nbg6817)
>>>>>> + echo "/dev/mmcblk0p2,64KiB,romd" >
>>>>>> /sys/module/block2mtd/parameters/block2mtd
>>>>>> + echo "/dev/mmcblk0p3,64KiB,header" >
>>>>>> /sys/module/block2mtd/parameters/block2mtd
>>>>>> + echo "/dev/mmcblk0p4,64KiB,kernel" >
>>>>>> /sys/module/block2mtd/parameters/block2mtd
>>>>>> + echo "/dev/mmcblk0p6,64KiB,header_1" >
>>>>>> /sys/module/block2mtd/parameters/block2mtd
>>>>>> + echo "/dev/mmcblk0p7,64KiB,kernel_1" >
>>>>>> /sys/module/block2mtd/parameters/block2mtd
>>>>>> + echo "/dev/mmcblk0p8,64KiB,rootfs_1" >
>>>>>> /sys/module/block2mtd/parameters/block2mtd
>>>>>> + ;;
>>>>>> + esac
>>>>>> +}
>>>>>> +
>>>>>
>>>>> can this not go into the commandline inside the devicetree ?
>>>> I tried, but block2mtd accepts only one mapping in the command line.
>>>>
>>>> I will rework the patch the next days and send an update.
>>> Why do we need block2mtd at all for this target?
>>
>> The system uses an internal mmc for storage of root fs and other data. I saw
>> that the rb532 platform also uses block2mtd for this.
>> With ubi on top of it, everything including sysupgrade worked nearly out of
>> the box. That's why I preferred to use existing parts.
>> If you have another idea, please tell. For me it's my first mmc based
>> platform.
> MMC is just a block device like any other. Please take a look at octeon,
> mvebu or x86 as examples of how to do it without block2mtd.
I have switched rootfs now to squashfs, that ist working. But I have problems
with the overlayfs.
It is on /dev/mmcblk0p1, but I do not understand how to tell the system to use
this partition. I cannot find a matching example.
What I did:
1) Added an fstab to the squassh image:
config 'global'
option anon_swap '0'
option anon_mount '0'
option auto_swap '1'
option auto_mount '1'
option delay_root '5'
option check_fs '0'
config 'mount'
option device '/dev/mmcblk0p1'
option enabled '1'
option target '/overlay'
option fstype 'ext4'
option options 'rw,sync'
option enabled_fsck 0
option is_rootfs '1'
2) label the ext4fs rootfs_data
3) added rootfs_data=/dev/mmcblk0p1 on kernel commandline.
But fstools does not mount it.
Please help.
Kind regards,
André
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