[PATCH v2] arm: mvebu: Update docs for Allied Telesis x220
Stefan Roese
stefan.roese at mailbox.org
Mon Jul 6 08:33:26 CEST 2026
On 7/5/26 03:50, Chris Packham wrote:
> The current documentation doesn't work as-is for extracting the DDR
> training binary from the vendor bootloader. There are some seemingly
> undocumented alignment requirements that we need to meet by padding the
> binary file. Add some instructions on how to do this with objcopy. Also
> fix a minor spelling mistake while we're here.
>
> Signed-off-by: Chris Packham <judge.packham at gmail.com>
Reviewed-by: Stefan Roese <stefan.roese at mailbox.org>
Thanks,
Stefan
> ---
>
> Notes:
> Changes in v2:
> - Remove binary file accidentally included in v1
>
> doc/board/alliedtelesis/x220.rst | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/doc/board/alliedtelesis/x220.rst b/doc/board/alliedtelesis/x220.rst
> index 6ca5f61ec4e1..447867ac7d8a 100644
> --- a/doc/board/alliedtelesis/x220.rst
> +++ b/doc/board/alliedtelesis/x220.rst
> @@ -18,7 +18,7 @@ markets.
> - GS980M/52
> - x230-52
>
> -DDR Traning (binhdr)
> +DDR Training (binhdr)
> --------------------
>
> The AlleyCat3 uses a binary blob for it's DDR training. This is launched by
> @@ -37,3 +37,5 @@ image
> .. prompt:: bash $
>
> ./tools/dumpimage -T kwbimage -p 1 -o board/alliedtelesis/x220/binary.0 u-boot.kwb
> + arm-softfloat-linux-gnueabi-objcopy -I binary -O binary --pad-to=0x12fcc \
> + board/alliedtelesis/x220/binary.0 board/alliedtelesis/x220/binary.0
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