Re: [patchv3 4/4] MMC: MMC boot partitions support.

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Chris,

I have also seen this on mmc-next.  

>> [    2.489403]  mmcblk0boot1: unknown partition table
>> [    2.495921]  mmcblk0boot0: unknown partition table


Aren't these the "hidden" partitions ?  Only available at boot time?

I need to apply my patch to reset the boot partition --  or is that now in mmc-next to see
if the problem still happens.


Philip

On Apr 20, 2011, at 6:30 PM, Chris Ball wrote:

> Hi,
> 
> On Wed, Apr 20 2011, Chris Ball wrote:
>> On Mon, Apr 11 2011, Andrei Warkentin wrote:
>>> Allows device MMC boot partitions to be accessed. MMC partitions
>>> are treated effectively as separate block devices on the same
>>> MMC card.
>> 
>> Booted this with a Sandisk SEM04G eMMC:
>> 
>> [    2.469921] mmcblk0boot0: mmc2:0001 SEM04G partition 1 1.00 MiB
>> [    2.475905] mmcblk0boot1: mmc2:0001 SEM04G partition 2 1.00 MiB
>> [    2.489403]  mmcblk0boot1: unknown partition table
>> [    2.495921]  mmcblk0boot0: unknown partition table
>> 
>> I haven't set up any boot partitions explicitly, so I guess the two 1MiB
>> boot partitions might be the factory-default setting.  Out of curiosity,
>> does that match your experience with Sandisk eMMCs? 
> 
> Also, on inserting an external SD card I see:
> 
> [    2.485079] mmcblk0: mmc2:0001 SEM04G 3.68 GiB 
> [    2.489681] mmcblk0boot0: mmc2:0001 SEM04G partition 1 1.00 MiB
> [    2.495681] mmcblk0boot1: mmc2:0001 SEM04G partition 2 1.00 MiB
> [    2.503756]  mmcblk0: p1 p2
> [    2.509303]  mmcblk0boot1: unknown partition table
> [    2.515343]  mmcblk0boot0: unknown partition table
> [    4.828326] EXT3-fs (mmcblk0p2): warning: maximal mount count reached, running e2fsc
> k is recommended
> [    4.845214] EXT3-fs (mmcblk0p2): using internal journal
> [    4.845223] EXT3-fs (mmcblk0p2): recovery complete
> [    4.857131] EXT3-fs (mmcblk0p2): mounted filesystem with ordered data mode
> [   20.886514] mmc0: new high speed SDHC card at address d555
> [   20.904282] mmcblk3: mmc0:d555 SD04G 3.79 GiB 
> [   20.906926]  mmcblk3: p1
> 
> But I would have expected this to be mmcblk1 -- might the boot partitions
> be using up mmcblk1/2 somehow?
> 
> Thanks,
> 
> - Chris.
> -- 
> Chris Ball   <cjb@xxxxxxxxxx>   <http://printf.net/>
> One Laptop Per Child
> --
> To unsubscribe from this list: send the line "unsubscribe linux-mmc" in
> the body of a message to majordomo@xxxxxxxxxxxxxxx
> More majordomo info at  http://vger.kernel.org/majordomo-info.html

--
To unsubscribe from this list: send the line "unsubscribe linux-mmc" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[Index of Archives]     [Linux USB Devel]     [Linux Media]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux