Dear Lei Wen,
In message <banlktinfvydiat9d+epadat2f_0qtqa...@mail.gmail.com> you wrote:
>
> > I'm not really sure I understand what this command was supposed to do.
> > What I want to see is consistency with other drivers, i. e. you should
> > be able to use "mmc dev" to select a device and optionally a partition
> > on it as current device, so the remaining "mmc" commands do not need
> > any device arguments any more.
>
> Like this mmc dev[:part], could it be acceptable?
The command should work similar to what we see with other storage
devices, i. e.
mmc dev 3
will select device "3" as current device, so that
mmc dev
will print something like "mmc device 3: Model ... Type ... Capacity
..." etc., and that
mmc read 80800000 0 100
would read the first 256 blocks of device 3 into RAM starting at
address 80800000.
Similar after
mmc dev 2:3
but now for device 2, partition 3.
For example, here is how it works on IDE:
=> help ide
ide - IDE sub-system
Usage:
ide reset - reset IDE controller
ide info - show available IDE devices
ide device [dev] - show or set current device
ide part [dev] - print partition table of one or all IDE devices
ide read addr blk# cnt
ide write addr blk# cnt - read/write `cnt' blocks starting at block `blk#'
to/from memory address `addr'
=> ide dev
IDE device 0: Model: ST920813AM Firm: 3.02 Ser#: 5QA015N2
Type: Hard Disk
Capacity: 19077.1 MB = 18.6 GB (39070080 x 512)
=> ide dev 1
IDE device 1: not available
> > I want to get rid of the device argument in all these calls.
>
> So the the mmc read would becomes "mmc read [ram address] [mmc sector
> start] [sector num]"?
Right. That's what we use on other storage devices, too.
Best regards,
Wolfgang Denk
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: w...@denx.de
You can only live once, but if you do it right, once is enough.
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