[PATCH]: cmd: part: add part block command

[razvan becheriu]

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setexpr can compute the divide/multiply part, but we still need to get the
partition block size somehow.

I know that this is 0x200 by default, but we can not hardcode that in the
scripts. we should read that from the partition info.

On 2020-06-02 at 17:55, trini at konsulko.com wrote:
> On Mon, Jun 01, 2020 at 01:20:25PM +0300, razvan.becheriu at gmail.com
wrote:
> >
> >     The Intel Edison OTA process requires a conversion of data size
> >     from bytes to number of blocks. The following functions are used:
> >
> >     # function ota_conv_sizes
> >     # Convert a bytes size to a block size
> >     # input  bytesize : size in bytes to convert
> >     # input  blksize  : size of a block in bytes
> >     # output num_blk  : converted size in blocks
> >
> >     # function ota_mmc_write
> >     # Write a memory buffer to mmc drive
> >     # input floadaddr    : address of buffer to write
> >     # input u_part_start : block start in mmc
> >     # input num_blk      : number of block to write
> >
> >     This patch adds the cmd part sub-command 'block' which returns
> >     the partition block size in bytes.
>
> This is usually done with the setexpr command today, thanks!
>
> --
> Tom
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