Commit graph

6 commits

Author SHA1 Message Date
Andre Przywara
1ea4fac5a3 arm/arm64: Move barrier instructions into separate header
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>
2016-05-12 11:13:03 -04:00
Hans de Goede
bfb33f0bc4 sunxi: mctl_mem_matches: Add missing memory barrier
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>
2016-04-27 19:54:11 +02:00
Hans de Goede
2c3c3ecb59 sunxi: Add INITIAL_USB_SCAN_DELAY Kconfig option
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>
2016-04-12 08:58:03 +02:00
Siarhei Siamashka
d96ebc468d sunxi: Add support for Allwinner A64 SoCs
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>
2016-04-01 09:52:28 +02:00
Alexander Graf
0ea5a04fbc sunxi: Explicitly cast u32 pointer conversions
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>
2016-04-01 09:52:28 +02:00
Alexander Graf
e6e505b93c sunxi: Move cpu independent code to mach directory
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>
2016-04-01 09:52:28 +02:00