On Dienstag, 29. November 2016 10:50:45 CET you wrote:
> Hello,
>
> I am working on a i.MX6UL based board with a 4GB eMMC partitioned as
> following:
>
> Device Boot Start End Sectors Size Id Type
> /dev/sdb1 2048 264191 262144 128M 83 Linux
> /dev/sdb2 264192 4458495 4194304 2G 83 Linux
> /dev/sdb3 4458496 7634943 3176448 1.5G 83 Linux
>
> On the 2nd partition, I write this ext4 filesystem file generated by
> Buildroot:
> Filesystem volume name: "ROOTFS"
> Last mounted on: <not available>
> Filesystem UUID: b9833a36-e89d-429a-b120-c3b00bcb7785
> Filesystem magic number: 0xEF53
> Filesystem revision #: 1 (dynamic)
> Filesystem features: has_journal dir_index filetype extent
> sparse_super uninit_bg
> Filesystem flags: signed_directory_hash
> Default mount options: (none)
> Filesystem state: clean
> Errors behavior: Unknown (continue)
> Filesystem OS type: Linux
> Inode count: 3456
> Block count: 91756
91756 blocks ...
> Reserved block count: 4587
> Free blocks: 13458
> Free inodes: 488
> First block: 1
> Block size: 1024
1k each -> 91 MByte filesystem
> Fragment size: 1024
> Blocks per group: 7648
> Fragments per group: 7648
> Inodes per group: 288
> Inode blocks per group: 36
> Last mount time: n/a
> Last write time: Tue Nov 29 09:44:52 2016
> Mount count: 0
> Maximum mount count: -1
> Last checked: Tue Nov 29 09:44:52 2016
> Check interval: 0 (<none>)
> Reserved blocks uid: 0 (user root)
> Reserved blocks gid: 0 (group root)
> First inode: 11
> Inode size: 128
> Journal inode: 8
> Default directory hash: half_md4
> Directory Hash Seed: a583a07f-6b59-442d-8e08-9be305f78d17
> Journal backup: inode blocks
>
> This filesystem is written with the following commands:
>
> BIOS> setexpr nbblocks ${filesize} / 0x200
> BIOS> setexpr nbblocks ${nbblocks} + 1
> BIOS> mmc write ${loadaddr} 0x40800 ${nbblocks}
> MMC write: dev # 0, block # 264192, count 183513 ... 183513 blocks
> written: OK
>
> I can boot Linux with it without any issues, however if I try to write a
> file in it I get the following crash:
>
> BIOS> ext4write mmc 0:2 ${loadaddr} /boot/${kernelimg} ${filesize}
What are you trying to achieve here? What is the value of $filesize?
Btw, which u-boot version are you using?
Regards,
Stefan
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