[PATCH 3/5] sunxi: move early "SRAM setup" into separate file

[Simon Glass]

On Mon, 24 Jan 2022 at 18:15, Andre Przywara <andre.przywara at arm.com> wrote:
>
> Currently we do some magic "SRAM setup" MMIO writes in s_init(), copied
> from the original BSP U-Boot. The comment speaks of this being required
> before DRAM access gets enabled, but there is no indication that this
> would actually be required that early.
>
> Move this out of s_init(), into board_init_f(). Since this actually only
> affects a very few older SoCs, the actual code goes into the cpu/armv7
> directory, to move it out of the way for all other SoCs.
>
> This also uses the opportunity to convert some #ifdefs over to the fancy
> IS_ENABLED() macros used in actual C code.
>
> We keep the s_init() stub around for now, since armv8's lowlevel_init
> still relies on it.
>
> Signed-off-by: Andre Przywara <andre.przywara at arm.com>
> ---
>  arch/arm/cpu/armv7/sunxi/Makefile |  3 +++
>  arch/arm/cpu/armv7/sunxi/sram.c   | 45 +++++++++++++++++++++++++++++++
>  arch/arm/mach-sunxi/board.c       | 38 +++++---------------------
>  3 files changed, 54 insertions(+), 32 deletions(-)
>  create mode 100644 arch/arm/cpu/armv7/sunxi/sram.c

Reviewed-by: Simon Glass <sjg at chromium.org>
Tested on: orangepi_pc2, orangepi_pc, A20-OLinuXino_MICRO
Tested-by: Simon Glass <sjg at chromium.org>