sunxi: move early "SRAM setup" into separate file
authorAndre Przywara <andre.przywara@arm.com>
Sun, 23 Jan 2022 00:28:43 +0000 (00:28 +0000)
committerAndre Przywara <andre.przywara@arm.com>
Fri, 4 Feb 2022 00:09:57 +0000 (00:09 +0000)
commit534b82a1f2ed3e407ed6fb2b98e7ad0b74369416
tree588fd763729c6324f5cb906956c9f0b96a6f8d38
parent2564fce7eea33f8828e132d966236e9621bea3cb
sunxi: move early "SRAM setup" into separate file

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@arm.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
arch/arm/cpu/armv7/sunxi/Makefile
arch/arm/cpu/armv7/sunxi/sram.c [new file with mode: 0644]
arch/arm/include/asm/arch-sunxi/cpu_sun4i.h
arch/arm/mach-sunxi/board.c