[U-Boot] i.MX8M layout, rephrased

[Sergey Kubushyn]

On Mon, 17 Dec 2018, Sergey Kubushyn wrote:

Yet another thought -- maybe it's time to move all 64-bit ARM stuff to its
own arch/arm64 as it is in Linux kernel since I don't remember when? There
are quite a few SoCs out there to justify such a move...

> I'm looking at U-Boot master tree and u-boot-imx repository. What we have
> now is quite a mess for i.MX8M.
>
> In master we have the following directories:
>
> 	 arch/arm/mach-imx/imx8
> 	 arch/arm/mach-imx/mx8m
>
> 	 arch/arm/include/asm/arch-imx8
> 	 arch/arm/include/asm/arch-mx8m
>
> In u-boot-imx it is different:
>
> 	 arch/arm/mach-imx/imx8
> 	 arch/arm/mach-imx/imx8m (vs ../mx8m in master)
>
> 	 arch/arm/include/asm/arch/arch-imx8
> 	 arch/arm/include/asm/arch/arch-imx8m (vs ../mx8m in master)
>
> The question is which one is going to make it in the master tree?
>
> The problem here is that files from those directories are referenced in
> multiple places and the "imx8m"/"mx8m" is all over in the header files and
> sources so once we decided on either naming one tree would have to make a
> lot of changes either adding or removing that 'i' before "mx8m".
>
> Can anybody responsible tell _WHICH_ one is going to make it into the main
> source tree? Would it be better if we decide on it sooner than later (i.e.
> _NOW_) so we won't have to hunt it all over the tree later on?
>
> I assume it should be "mx8m" as it is in master tree following suit for
> other flavors so it is u-boot-imx tree that has to be fixed.
>
>
> Another issue is that ARCH_IMX8 and ARCH_IMX8M are treated as different
> ARCHITECTURES in u-boot-imx unlike e.g. IMX6 that is treated as one ARCH
> with different flavors (SX/DL/Q/whatever). That makes a lot of unnecessary
> confusion and, IMHO, should be somehow cleaned up to make it consistent.
>
>
> Can anybody tell something on this? Any thoughts, ideas, recomendations?

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