Re: [PATCH 0/3] Add boot_enable attribute to eMMC device for boot mode operation selection

[Neil Armstrong <narmstrong@neotion.com>]

On 04/22/2013 06:55 AM, Namjae Jeon wrote:
> 2013/4/19, Neil Armstrong <narmstrong@neotion.com>:
>> Since eMMC 4.3 a special boot mode operation was introduced to retrieve
>> data from the eMMC device with a very simple procedure. Since the Linux
>> kernel exports these device boot partitions, it may be useful to select
>> the boot partition from the user space.
>>
>> The patch has been tested on a Toshiba eMMC conforming with eMMC 4.5
>> specifications.
> Hi Neil.
> We can be enable boot partition using mmc-utils.
> See this address.
> https://git.kernel.org/cgit/linux/kernel/git/cjb/mmc-utils.git/commit/?id=7bd1320b2cb38f040ab5cf017d17e283496690bf
> 
> So, I don't think this patch is useful.
> If you consider to be disable boot partition, you can try to update
> mmc-utils base on the address I shared.
> 
> Thanks.
>>
>> Neil Armstrong (3):
>>   Add BOOT_PARTITION_ENABLE definition to MMC EXT_CSD PART_CONFIG
>>   Add boot_enable sysfs attribute to select MMC boot operation
>>     partition
>>   Add Documentation for MMC boot_enable attribute
>>
>>  Documentation/mmc/mmc-dev-parts.txt |    6 +++
>>  drivers/mmc/card/block.c            |   72
>> ++++++++++++++++++++++++++++++++++-
>>  include/linux/mmc/mmc.h             |    1 +
>>  3 files changed, 78 insertions(+), 1 deletions(-)
>>
>>
>>
> 

Hi,
Thanks for the reply, I was not aware of the mmc-utils tools. I think
the tool and the MMC_IOC_CMD interface should be documented in the kernel.

Please ignore my patch.

Regards,
Neil