Re: [RFC] mmc_test: how use mmc_test on only eMMC board

Jaehoon Chung
2011-05-20T01:39:15Z

Hi,

Chris Ball wrote:
> Hi,
>
> On Thu, May 19 2011, Jaehoon Chung wrote:
>> Hi mailing..
>>
>> I want to know how use mmc_test..
>>
>> In my case, i used only eMMC board.
>> So i didn't use unbind/bind for mmc_test.
>>
>> echo mmc0:0001 > /sys/bus/mmc/drivers/mmcblk/unbind
>> then rootfs of my board has be broken
>
> mmc_test destroys the data on the card being tested, so there is no way
> to use it on your active rootfs.
>
> You would have to boot from external SD (or USB, or network, or
> something else) in order to run it on your internal eMMC. If you do
> this, first make sure your eMMC doesn't contain any data needed to boot
> your system far enough to be able to boot a kernel from another device.
>
Thanks for your comment. i know that i can use SD-boot in order to use mmc_test.
but if there is other method, i want to know them.
I try to boot with SD-card..

Thanks Chris. :)

Regards,
Jaehoon Chung