[U-Boot] [PATCH 3/3] mx6: synchronize SPL to u-boot offset

[Max Krummenacher]

Hi Marek

>>>>  #if defined(CONFIG_SPL_MMC_SUPPORT)
>>>>  #define CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR    138 /*
>>>> offset 69KB */
>>>> +#define CONFIG_SPL_PAD_TO                  0x11000 /* offset
>>>> 68KB */
>>>
>>> Does this mess up boards which can boot from both SD and other boot
>>> media (NAND, SPI NOR, PNOR...) ?
>>
>> Good point.
>> CONFIG_SPL_PAD_TO is used to create the combined SPL/U-Boot binary.
>> While I have not found any use of this by any config which includes
>> imx6_spl.h it might hinder future boards.
>> So it's probably best to define CONFIG_SPL_PAD_TO in the individual
>> board configs and skip this patch.
>
> So how did you come up with this patch ? What was the thought process?
>
I'm preparing patches for submission of new boards, Colibri iMX6, Apalis iMX6.
They rely on this patchset
https://www.mail-archive.com/u-boot@lists.denx.de/msg227944.html, so
the board patches are not yet ready for submission.

I forward ported from a downstream 2015.04 U-Boot where 'make
u-boot-with-spl.imx' used an offset of 68KB between SPL and U-Boot
binary matching the SPL code which later loads U-Boot.
With the current master it used an offset of 64KB resulting in an SPL
not loading U-Boot.
Probably the 4KB stem from now counting SPL_PAD_TO from the start of
the IVT/DCD region and earlier counting from the start of SPL.

Max