From: Stephen Warren <swarren@wwwdotorg.org>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 2/3] cmd_partuuid: add command to retrieve a partition's UUID
Date: Fri, 17 Aug 2012 09:08:16 -0600 [thread overview]
Message-ID: <502E5E60.7070708@wwwdotorg.org> (raw)
In-Reply-To: <20120817084658.3ea31f2a@amdc308.digital.local>
On 08/17/2012 12:46 AM, Lukasz Majewski wrote:
> Hi Stephen,
>
>> On 08/16/2012 05:15 PM, Stephen Warren wrote:
>>> This implements the following:
>>>
>>> partuuid mmc 0:1
>>> -> prints the partition's UUID.
>>> partuuic mmc 0:1 uuid
>>> -> sets environment variable "uuid" to the partition's UUID.
>>>
>>> This can be useful when writing a bootcmd which searches all known
>>> devices for something bootable, and then wants the kernel to use the
>>> same partition as the root device, e.g.:
>>>
>>> partuuid ${devtype} ${devnum}:${rootpart} uuid
>>> setenv bootargs root=PARTUUID=${uuid} ...
>>
>> I guess one thing I might mention here:
>>
>> I can imagine other partition-oriented commands existing, e.g. a
>> command to find the bootable partition on a particular storage
>> device. I'm not sure if we should create a single "part" command with
>> various sub-options for this, e.g.:
>>
>> part uuid mmc 0:1
>> part get-bootable mmc 0
>
> I'm now working at restoring the GPT (GUID Partition Table) at MMC in
> u-boot.
>
> I plan to implement a separate command - gptrestore
> However, I think that one single command would be more suitable for
> this purpose.
What will gptrestore do?
next prev parent reply other threads:[~2012-08-17 15:08 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-16 23:15 [U-Boot] [PATCH 1/3] disk: part_efi: parse and store partition UUID Stephen Warren
2012-08-16 23:15 ` [U-Boot] [PATCH 2/3] cmd_partuuid: add command to retrieve a partition's UUID Stephen Warren
2012-08-16 23:21 ` Stephen Warren
2012-08-17 6:46 ` Lukasz Majewski
2012-08-17 15:08 ` Stephen Warren [this message]
2012-08-17 15:21 ` Lukasz Majewski
2012-08-16 23:15 ` [U-Boot] [PATCH 3/3] tegra: enable CONFIG_CMD_PARTUUID Stephen Warren
2012-10-02 6:39 ` Simon Glass
2012-09-02 17:45 ` [U-Boot] [PATCH 1/3] disk: part_efi: parse and store partition UUID Wolfgang Denk
2012-09-03 2:06 ` Stephen Warren
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