[U-Boot] [U-BOOT] [PATCH] mmc: enable switch partition function

[Lei Wen]

Hi Wolfgang,

On Wed, Apr 13, 2011 at 1:35 PM, Wolfgang Denk <wd at denx.de> wrote:
> Dear Lei Wen,
>
> In message <BANLkTikWwbbuNyHppQQygZ3JDh4aXUg3NA at mail.gmail.com> you wrote:
>>
>> > Why don't you follow the existing examples from other storage devices,
>> > where we have a "dev" subcommand that allows to select one of the
>> > existing devices as "active" device? =A0Similarly, you could here select
>> > an active device/partition pair.
>>
>> dev subcommand to act as "sw_part" in my first patch?
>
> 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?

>
>> How about this solution?
>> Like if want to access the dev 0 and hardware partition 1, we could use the
>> command as "mmc read 0:1 ***".
>> If not pass the :[part] parameter to the dev number, like "mmc read 0 ***",
>> that would means the partition is 0 by default. For this case, if that device
>> has no capabilty of multi hardware partition, it would act like normal, or
>> switch to the default 0 before any further action.
>
> 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]"?

Best regards,
Lei