u-boot.git/arch/arc/include/asm, branch master

lmb: move CONFIG_LMB in Kconfig

2021-04-22T18:09:45+00:00

Migrate CONFIG_LMB in Kconfig.

Signed-off-by: Patrick Delaunay

arc: m68k: nds32: nios2: sh: xtensa: Add empty spl.h header

2021-01-05T19:24:40+00:00

At present it is not possible to include spl.h in on these architectures
since the asm/spl.h file is not present. We want to be able to use the
spl_phase() function, so add empty headers to make things build.

Signed-off-by: Simon Glass

common: Drop linux/bitops.h from common header

2020-05-19T01:19:23+00:00

Move this uncommon header out of the common header.

Signed-off-by: Simon Glass

ARC: HSDK-4xD: add CSM configuration support

2020-04-27T08:20:27+00:00

Add support for CSM enable/disable and CSM relocation via
hsdk_init command. We allow to relocate CSM to the beginning of
any aperture even if HW support finer granularity.

Signed-off-by: Eugeniy Paltsev 
Signed-off-by: Alexey Brodkin

ARC: ARCv2: handle DSP presence in HW

2020-04-27T08:20:25+00:00

In case of DSP extension presence in HW some instructions
(related to integer multiply, multiply-accumulate, and divide
operation) executes on this DSP execution unit. So their
execution will depend on dsp configuration register (DSP_CTRL)
As we want these instructions to execute the same way regardless
of DSP presence we need to set DSP_CTRL properly.

NOTE:
we do the same adjustments in Linux kernel, see in kernel tree:
commit 4827d0cf744e ("ARC: handle DSP presence in HW")

Signed-off-by: Eugeniy Paltsev 
Signed-off-by: Alexey Brodkin

ARC: CACHE: add support for SL$ disable

2020-04-16T20:36:36+00:00

Since version 3.0 ARC HS supports SL$ (L2 system level cache)
disable. So add support for SL$ disable/enable to code.

Signed-off-by: Eugeniy Paltsev 
Signed-off-by: Alexey Brodkin

ARC: IO: add MB for __raw_* memory accessors

2020-03-31T15:31:53+00:00

We add memory barriers for __raw_readX / __raw_writeX accessors same
way as it is done for readX and writeX accessors as lots of U-boot
driver uses __raw_readX / __raw_writeX instead of proper accessor
with barrier.

It will save us from lot's of debugging in the future and it is OK
as U-Boot is not that performance oriented as real run-time
software like OS or user bare-metal app so we may afford being not
super fast as we only being executed once.

Signed-off-by: Eugeniy Paltsev 
Signed-off-by: Alexey Brodkin

ARC: IO: add compiler barriers to IO accessors

2020-03-31T15:31:53+00:00

We must use compiler barriers in C-version read/write IO accessors
before and after operation (read or write) so it won't be reordered
by compiler.

Fixes commit 07906b3dad15 ("ARC: Switch to generic accessors")

Signed-off-by: Eugeniy Paltsev 
Signed-off-by: Alexey Brodkin

ARC: IO: add volatile to accessors

2020-03-31T15:25:16+00:00

We must use 'volatile' in C-version read/write IO accessors
implementation to avoid merging several reads (writes) into
one read (write), or optimizing them out by compiler.

Fixes commit 07906b3dad15 ("ARC: Switch to generic accessors")

Signed-off-by: Eugeniy Paltsev 
Signed-off-by: Alexey Brodkin

dma-mapping: add for all architectures

2020-02-20T07:09:54+00:00

To avoid "asm/dma-mapping.h: No such file or directory" error,
we need something.

Signed-off-by: Masahiro Yamada