[U-Boot] [PATCH 1/2] armv8: add hooks for all cache-wide operations

[Simon Glass]

Hi Stephen,

On 17 October 2016 at 15:35, Stephen Warren <swarren at wwwdotorg.org> wrote:
> From: Stephen Warren <swarren at nvidia.com>
>
> SoC-specific logic may be required for all forms of cache-wide
> operations; invalidate and flush of both dcache and icache (note that
> only 3 of the 4 possible combinations make sense, since the icache never
> contains dirty lines). This patch adds an optional hook for all
> implemented cache-wide operations, and renames the one existing hook to
> better represent exactly which operation it is implementing. A dummy
> no-op implementation of each hook is provided. These dummy
> implementations are moved into C code, since there's no need to
> implement them in assembly.
>
> Signed-off-by: Stephen Warren <swarren at nvidia.com>
> ---
>  arch/arm/cpu/armv8/cache.S                   |  6 ------
>  arch/arm/cpu/armv8/cache_v8.c                | 23 ++++++++++++++++++++---
>  arch/arm/cpu/armv8/fsl-layerscape/lowlevel.S |  4 ++--
>  arch/arm/include/asm/system.h                |  5 ++++-
>  arch/arm/mach-tegra/tegra186/cache.c         |  2 +-
>  5 files changed, 27 insertions(+), 13 deletions(-)
>

I think we should have a proper interface for this stuff rather than
weak functions. Maybe we need a linker-list approach, or a cache
uclass?

Regards,
Simon