[U-Boot] [PATCH] ARM: mx6: Enable MMC FS boot support

Marek Vasut
2016-04-28T13:40:45Z

On 04/28/2016 03:36 PM, Stefano Babic wrote:
> Hi Marek,
>
> On 28/04/2016 13:03, Marek Vasut wrote:
>> On 04/28/2016 07:59 AM, Stefano Babic wrote:
>>> Hi Marek,
>>>
>>> On 28/04/2016 04:24, Peng Fan wrote:
>>>> Hi Marek,
>>>>
>>>> On Thu, Apr 28, 2016 at 01:06:07AM +0200, Marek Vasut wrote:
>>>>> Enable support for booting U-Boot image from filesystem instead of some
>>>>> random offset on the SD card. This makes the board usable by putting the
>>>>> u-boot.img to first partition of the SD card and writing the SPL this way:
>>>>> $ dd if=u-boot-with-spl.imx of=/dev/sdX seek=2 bs=512
>>>>
>>>> I once want to enable this for i.MX6UL, but was rejected.
>>>> Anyway I prefer load u-boot.img from filesystem.
>>>>
>>>
>>> Right - we have this discussion some times ago. The agreement we reach
>>> was to maintain SPL loading only from a raw image.
>>>
>>> https://www.mail-archive.com/u-boot at lists.denx.de/msg185432.html
>>
>> The feeling I get from the discussion you linked above and the
>> discussion here is that because user can be an idiot and delete
>> files at random, we should move back to the 80s
>
> No U-Boot in the 80s.
>
>> and store files
>> like on the casette tapes, at random offset. User can also delete
>> kernel image and yet, we store it on the filesystem. Maybe we should
>> also store the kernel image at another raw offset ... and hey, maybe
>> we should ditch filesystem altogether, just tar everything up and
>> store it at yet another offset, since user might delete files at
>> random, just imaging he'd delete libc ...
>
> wandboard has a market quite similar to the Raspi and yes, there is a
> lot of inexperienced people using it.

Shall I prepare a patch which places kernel to yet another ad-hoc
location on the SD card then and tweak bootargs to use cramfs then?

--
Best regards,
Marek Vasut