Commit bfb33f0bc4 ("sunxi: mctl_mem_matches: Add missing memory
barrier") broke compilation for the Pine64, as dram_helper.c now
includes <asm/armv7.h>, which does not compile on arm64.
Fix this by moving all barrier instructions into a separate header
file, which can easily be shared between arm and arm64.
Also extend the inline assembly to take the "sy" argument, which is
optional for ARMv7, but mandatory for v8.
This fixes compilation for 64-bit sunxi boards (Pine64).
Acked-by: Ian Campbell <ijc@hellion.org.uk>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
We are running with the caches disabled when mctl_mem_matches gets called,
but the cpu's write buffer is still there and can still get in the way,
add a memory barrier to fix this.
This avoids mctl_mem_matches always returning false in some cases, which
was resulting in:
U-Boot SPL 2015.07 (Apr 14 2016 - 18:47:26)
DRAM: 1024 MiB
U-Boot 2015.07 (Apr 14 2016 - 18:47:26 +0200) Allwinner Technology
CPU: Allwinner A23 (SUN8I)
DRAM: 512 MiB
Where 512 MiB is the right amount, but the DRAM controller would be
initialized for 1024 MiB.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
Some boards have on board usb devices which need longer than the USB
spec's 1 second to connect from board powerup. Add a config option which
when non 0 adds an extra delay before the first usb bus scan.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
The Allwinner A64 SoC is used in the Pine64. This patch adds
all bits necessary to compile U-Boot for it running in AArch64
mode.
Unfortunately SPL is not ready yet due to legal problems, so
we need to boot using the binary boot0 for now.
Signed-off-by: Siarhei Siamashka <siarhei.siamashka@gmail.com>
[agraf: remove SPL code, move to AArch64]
Signed-off-by: Alexander Graf <agraf@suse.de>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Some parts of the sunxi code cast explicitly between u32 values and pointers.
This is not a problem in practice, because all 64bit SoCs today only use the
lower 32 bits for their phyical address space. But we need to make sure that
the compiler is sure this is not an accident as well.
Signed-off-by: Alexander Graf <agraf@suse.de>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Some of the code in arch/arm/cpu/armv7/sunxi is actually armv7 specific, while
most of it is just generic code that could as well be used on an AArch64 SoC.
Move all files that are not really tied to armv7 into a new mach-sunxi
directory.
Signed-off-by: Alexander Graf <agraf@suse.de>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
