[U-Boot] Refactoring of U-Boot directory structure

[Masahiro Yamada]

Hi Stephen,


On Thu, 12 Jun 2014 09:16:14 -0600
Stephen Warren <swarren at wwwdotorg.org> wrote:

> On 06/11/2014 10:10 PM, Masahiro Yamada wrote:
> ...
> > Tegra uses different CPU  for SPL and Normal U-boot.
> > That's why Tegra directories are sprinkled under arch/arm/:
> > 
> > arch/arm/cpu/arm720t/tegra-common/
> > arch/arm/cpu/arm720t/tegra20/
> > arch/arm/cpu/arm720t/tegra30/
> > arch/arm/cpu/arm720t/tegra114/
> > arch/arm/cpu/arm720t/tegra124/
> > arch/arm/cpu/armv7/tegra-common/
> > arch/arm/cpu/armv7/tegra20/
> > arch/arm/cpu/armv7/tegra30/
> > arch/arm/cpu/armv7/tegra114/
> > arch/arm/cpu/armv7/tegra124/
> > arch/arm/include/asm/arch-tegra/
> > arch/asm/include/asm/arch-tegra20/
> > arch/asm/include/asm/arch-tegra30/
> > arch/asm/include/asm/arch-tegra114/
> > arch/asm/include/asm/arch-tegra124/
> 
> This is a deliberate split so that we can control the code/data size of
> the arm720t (SPL) parts of the code.
> 
> > They can be refactored
> > 
> > arch/arm/mach-tegra/                      : tegra common part
> > arch/arm/mach-tegra/tegra20/         : tegra20-specific
> > arch/arm/mach-tegra/tegra30/         : tegra30-specific
> > arch/arm/mach-tegra/tegra114/       : tegra114-specific
> > arch/arm/mach-tegra/tegra124/       : tegra124-specific
> > 
> > or  maybe
> > 
> > arch/arm/plat-tegra/               : tegra common part
> > arch/arm/mach-tegra20/         : tegra20-specific
> > arch/arm/mach-tegra30/         : tegra30-specific
> > arch/arm/mach-tegra114/       : tegra114-specific
> > arch/arm/mach-tegra124/       : tegra124-specific
> 
> If we refactor into that structure, the SPL/non-SPL separation will be
> much less clear.

In that case, you can create a subdirectory under mach-tegra/
to separate SPL code from the others.

Best Regards
Masahiro Yamada