[U-Boot] [PATCH] mpc5xxx: Add stub implementation of cache functions

[Marek Vasut <marex@denx.de>]

On Tuesday, August 26, 2014 at 01:05:31 PM, Vasili Galka wrote:
> Some drivers (e.g. net/e1000) reference these functions. So, this
> fixes the build of MVBC_P board.
> 
> I'm not familiar with the MPC5xxx platform, maybe a full
> implementation shall be implemented instead of this stub in the
> future.

Is MPC5xxx cache coherent PPC or is it not ?

> Signed-off-by: Vasili Galka <vvv444@gmail.com>
> Cc: Wolfgang Denk <wd@denx.de>, Marek Vasut <marex@denx.de>

+CC Scott , he can likely clarify .

> ---
>  arch/powerpc/cpu/mpc5xxx/Makefile |    1 +
>  arch/powerpc/cpu/mpc5xxx/cache.c  |   15 +++++++++++++++
>  2 files changed, 16 insertions(+), 0 deletions(-)
>  create mode 100644 arch/powerpc/cpu/mpc5xxx/cache.c
> 
> diff --git a/arch/powerpc/cpu/mpc5xxx/Makefile
> b/arch/powerpc/cpu/mpc5xxx/Makefile index 5c67e1d..d122b29 100644
> --- a/arch/powerpc/cpu/mpc5xxx/Makefile
> +++ b/arch/powerpc/cpu/mpc5xxx/Makefile
> @@ -7,6 +7,7 @@
> 
>  extra-y	= start.o
>  extra-y += traps.o
> +obj-y  += cache.o
>  obj-y  += io.o
>  obj-y  += firmware_sc_task_bestcomm.impl.o
>  obj-y += i2c.o
> diff --git a/arch/powerpc/cpu/mpc5xxx/cache.c
> b/arch/powerpc/cpu/mpc5xxx/cache.c new file mode 100644
> index 0000000..5d674bc
> --- /dev/null
> +++ b/arch/powerpc/cpu/mpc5xxx/cache.c
> @@ -0,0 +1,15 @@
> +/*
> + * This file contains stub implementation of
> + *   invalidate_dcache_range()
> + *   flush_dcache_range()
> + *
> + * SPDX-License-Identifier:	GPL-2.0+
> + */
> +
> +void invalidate_dcache_range(unsigned long start, unsigned long stop)
> +{
> +}
> +
> +void flush_dcache_range(unsigned long start, unsigned long stop)
> +{
> +}

Best regards,
Marek Vasut