[U-Boot] [PATCH 01/22] mkimage: Add OMAP boot image support

Aneesh V
2011-03-04T08:49:50Z

Hi Vaibhav,

On Friday 04 March 2011 10:57 AM, Bedia, Vaibhav wrote:
> Aneesh,
>
> On Tuesday, March 01, 2011 8:34 PM, Bedia, Vaibhav wrote:
>> On Tuesday, March 01, 2011 8:20 PM, V, Aneesh wrote:
>>>
>>> For OMAP4:
>>> 1. An 8 byte GP header is enough for booting from external
>>> MMC FAT partition
>>> 2. A dummy CH with a dummy CHSETTINGS is essential for booting
>>> from the RAW partition of eMMC or external MMC. This
>>> works for FAT booting too.
>>> 3. A full configuration with proper CHSETTINGS and CHRAM will
>>> help us in directly booting from SDRAM avoiding the SPL,
>>> but this is not supported on all revisions of OMAP3/4
>>>
>>> IMHO, let's have one image type(what John has created now) for
>>> (1) and (2). It doesn't really harm to have 512 bytes of
>>> additional header attached to your image when it makes it
>>> suitable for different types of booting.
>>>
>>> For 3, if that is supported in U-Boot in future, we will need
>>> a new image type, maybe something like omapchimage.
>>>
>>> Let me know if you had any special considerations for your
>>> SoC.
>>
>> I will have to check if the additional 512 bytes will cause a
>> problem for TI81XX GP devices. We haven't tried with the extra
>> 512 bytes yet.
>>
>
> I checked the image with the additional 512bytes on TI81XX. It does not work.
>
> If its fine with you I'll work on using a version flag for attaching the 512byte.
> How about something on the lines of what was done for imximage did recently?

I really don't know what this scheme is. But if it works it will be
really great.

Best regards,
Aneesh