lkml.org 
[lkml]   [2013]   [Apr]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 0/3] Add boot_enable attribute to eMMC device for boot mode operation selection
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


\
 
 \ /
  Last update: 2013-04-22 10:01    [W:0.063 / U:0.092 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site