Commit graph

172 commits

Author SHA1 Message Date
Eugeniy Paltsev
cc2f7b6c7d ARC: [plat-axs10x]: migrate to DM_MMC
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2019-04-18 09:12:38 +03:00
Eugeniy Paltsev
54858311df ARC: [plat-hsdk]: migrate to DM_MMC
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2019-04-18 09:12:38 +03:00
Neil Armstrong
ffd4c7c2ec dts: switch spi-flash to jedec, spi-nor compatible
There is no reason not to use the Linux "jedec,spi-nor" binding in U-Boot
dts files. This compatible has been added in sf_probe, let use it.

This patch switches to jedec,spi-nor when spi-flash is used in the DTS
and DTSI files, and removed spi-flash when jedec,spi-nor is already
present.

The x86 dts are switched in a separate commit since it depends on a change
in fdtdec.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Acked-by: Stefan Roese <sr@denx.de>
Reviewed-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Reviewed-by: Evgeniy Paltsev <paltsev@synopsys.com>
Reviewed-by: Rick Chen <rick@andestech.com>
Reviewed-by: Patrick Delaunay <Patrick.delaunay@st.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
2019-04-12 10:54:27 +05:30
Alexey Brodkin
fae3798ac9 ARC: cache: define CONFIG_SYS_CACHELINE_SIZE as ARCH_DMA_MINALIGN
Even though we don't use CONFIG_SYS_CACHELINE_SIZE in ARC-specific code
it is used a lot in different drivers for alignment purposes.

So we define it and make much more drivers at least compilable for ARC.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2019-01-25 08:41:09 +03:00
Alexey Brodkin
7181a6d1cf ARC: Fix iteration in arc_xx_version()
"i" gets incremented before we're entering loop body
and effectively we iterate from 1 to 8 instead of 0 to 7.

This way we:
 a) Skip the first line of struct hs_versions
 b) Go over it and access memory beyond the structure

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2019-01-25 08:40:53 +03:00
Philipp Tomsich
2acc24fc28 Kconfig: Migrate BOUNCE_BUFFER
The bounce buffer is used by a few drivers (most of the MMC drivers)
to overcome limitations in their respective DMA implementation.

This moves the configuration to Kconfig and makes it user-selectable
(even though it will be a required feature to make those drivers
work): the expected usage is for drivers depending on this to 'select'
it unconditionally from their respective Kconfig (see follow-up
patches).

This commit includes a full migration using moveconfig.py to ensure
that each commit compiles.  To ensure bisectability we update
dependencies of various drivers to now select BOUNCE_BUFFER when needed.

[trini: Squash all patches to ensure bisectability]
Signed-off-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Otavio Salvador <otavio@ossystems.com.br> [dw_mmc portion]
Reviewed-by: Fabio Estevam <festevam@gmail.com> [mxsmmc portion]
Reviewed-by: Simon Glass <sjg@chromium.org> [tegra portion]
2019-01-19 09:49:26 -05:00
Alexey Brodkin
85e529fdfc ARC: Improve identification of ARC cores
1. Try to guess a ARC core template that was used
   i.e. not just name a core family but something more
   menaingful like "ARC HS38", "ARC EM11D" etc.

   We do it checking availability of the key differentiation
   features like:
    - Caches (we actually only check for L1 I$ fpr simplicity)
    - XY-memory
    - DSP extensions etc.

2. Identify ARC subsystems

3. Print core clock frequency

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-12-03 14:26:18 +03:00
Alexey Brodkin
adc9b09a23 emdk->emsdp: Rename board
Real marketing name of the board was recently updated so
to accommodate that change renaming the board and all
related to it.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-11-01 23:04:05 +03:00
Alexey Brodkin
6e63314f43 ARC: Don't use COMMON section for global not-initialized variables
By default GCC puts global non-initialized variables in COMMON section.
And we used to ignore existence of COMMON section in our linker
scripts though smart LD silently appended it right after .bss.

And the problem here is variables from COMMON section even though
require zeroing in run-time were not zeroed as they were placed
right after __bss_end symbol.

It was a pure luck we never faced serious problem due to this,
but now it is fixed.

Now as for some other architectures we'll just force GCC to put
those global variables in normal .bss section.

This solution is much nicer than adding COMMON section to each and
every linker script.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-10-15 13:35:17 +03:00
Alexey Brodkin
ba9f56f3d4 ARC: make generic print_cpuinfo() weak
This allows board to override print_cpuinfo() because
they might know better which ARChitect template was used.
This way we may not only derive base architecture type and
version but more meaningful things like "ARC EM7D" instead of
simple "ARC EM", "ARC HS36" instead of "ARC HS".

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-10-12 15:14:40 +03:00
Alexey Brodkin
5396e8b1dd arc: Add support for IoT development kit
The DesignWare ARC IoT Development Kit is a versatile platform
that includes the necessary hardware and software to accelerate
software development and debugging of sensor fusion,
voice recognition and face detection designs.

More information is avaialble here [1] and here [2].

The board is based on real silicon with
ARC EM9D-based Data Fusion IP Subsystem.

It sports a rich set of I/O including
 * DW USB OTG
 * DW MobileStorage (used for micro SD-card)
 * GPIO
 * multiple serial interface including DW APB UART
 * ADC, PWM and eFlash, SRAM and SPI Flash memory
 * Real-Time Clock (RTC)
 * Bluetooth module with worldwide regulatory compliance
   (FCC, IC, CE, ETSI, TELEC)
 * On-board 9-axis sensor (gyro, accelerometer and compass)

Extensible with Arduino, Pmod, mikroBUS connectors and a 2x18
extension header.

One of the most interesting features for developers is built-in
Digilent USB JTAG probe so only micro-USB cable is needed!

[1] https://www.synopsys.com/dw/ipdir.php?ds=arc_iot_development_kit
[2] https://www.synopsys.com/dw/doc.php/ds/cc/iot_dev_kit.pdf

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-10-05 16:57:00 +03:00
Alexey Brodkin
7fe46b969d ARC: Implement print_cpuinfo()
Once we enable DISPLAY_CPUINFO for ARC we'll see
ARC core family and version printed on boot.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-10-05 16:55:42 +03:00
Alexey Brodkin
c3dcd508b6 ARC: Add model property to boards .dts
1. This way we sync with Linux kernel where we have model
   set for all ARC boards for quite some time, see [1]

2. Once we enable DISPLAY_BOARDINFO for ARC this info will
   be printed on boot givin some extra data-point about the board

[1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=618a9cd06dd471ac232f5b27325b24d26eba5571

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-10-05 16:55:42 +03:00
Alexey Brodkin
56ddae7d91 ARC: Don't pre-define CROSS_COMPILE
Even though arc-linux- prefix is used in ARC prebuilt tools and
in Buildroot there're other options like Linux distro cross-tools
etc where prefix is different so let's not rely on this default.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-10-05 16:55:42 +03:00
Masahiro Yamada
3747bdbb2b arch: types.h: factor out fixed width typedefs to int-ll64.h
All architectures have the same definition for s8/16/32/64
and u8/16/32/64.

Factor out the duplicated code into <asm-generic/int-ll64.h>.

BTW, Linux unified the kernel space definition into int-ll64.h
a few years ago as you see in Linux commit 0c79a8e29b5f
("asm/types.h: Remove include/asm-generic/int-l64.h").

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-09-10 20:48:16 -04:00
Eugeniy Paltsev
13e57722fe ARC: HSDK: Fix timer frequency value
CPU (and hence cpu timers) on HSDK board runs at 500MHz after
preloader so fix wrong CPU frequency value in hsdk.dts

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
2018-09-05 18:11:45 +03:00
Alexey Brodkin
8f590063ba ARC: Enable unaligned access in hardware if compiler uses it
Even if ARC core might handle unaligned access to data this
hardware feature by default is disabled.

But GCC starting from 8.1.0 unconditionally uses it for ARC HS cores.
Which leads to quite strange and fatal run-time failures like the one
below if HW is not configured properly:
| hsdk# sf probe
| Misaligned data access exception @ 0xbff794d4
| ECR:    0x000d0000
| RET:    0xbff794d4
| BLINK:  0xbff79644
| STAT32: 0x00000800
| GP: 0x1003e000   r25: 0xbfd58f08
| BTA: 0xbff794a4  SP: 0xbfd58cd4  FP: 0xbfd58ef0
| LPS: 0xbff90240 LPE: 0xbff90244 LPC: 0x00000000
| r00: 0x00000000 r01: 0x00000003 r02: 0x000026bf
| r03: 0x00000000 r04: 0x00000100 r05: 0x00000000
| r06: 0x00000001 r07: 0x00000000 r08: 0x1dcd6500
| r09: 0x00000000 r10: 0x00200000 r11: 0x00000000
| r12: 0x1b3d4440 r13: 0xbff9eca4 r14: 0xbfd59d68
| r15: 0xbfd60cd0 r16: 0x00000000 r17: 0x00000000
| r18: 0xbff9ed14 r19: 0xbfd59c78 r20: 0xbfd58d40
| r21: 0xbfd58d44 r22: 0x00000000 r23: 0x00000000
| r24: 0xbfd59ba8
| Resetting CPU ...

Now we're checking for __ARC_UNALIGNED__ define emitted by the
compiler if it's going to use unaligned access and then we
force-enable it in hardware too.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-07-31 07:49:47 +03:00
Eugeniy Paltsev
cdfe6913c1 AXS10x: add spi flash support
AXS10x boards have n25q512 spi flash IC, so add corresponding
nodes to device tree and enaple corresponding options in
defconfig.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-07-31 07:49:47 +03:00
Eugeniy Paltsev
fe3eb7a887 GPIO: CREG: improve flexibility of hsdk-creg-gpio driver
CREG GPIO is a driver for weird soc-specific output ports, which are
controlled by some fields in memory mapped register.

Example:

31                 9        7        5           0   < bit number
|                  |        |        |           |
[     not used     | gpio-1 | gpio-0 | <-shift-> ]   < 32 bit register
                       ^        ^
                       |        |
                write 0x2 == set output to "1" (activate)
                write 0x3 == set output to "0" (deactivate)

As of tooday we only support fixed (hardcoded) bit per gpio line,
activate / deactivatei and shift values. Fix that by read them from
device tree to be able to use this driver for other boards.

Remove "hsdk" prefix from compatible string as this driver can be
used with different boards like HSDK, AXS101, AXS103, etc.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-07-31 07:49:47 +03:00
Michal Simek
58008cbab5 Kconfig: Sort bool, default, select and imply options
Another round of sorting Kconfig entries aplhabetically.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Acked-by: Alexey Brodkin <abrodkin@synopsys.com>
Reviewed-by: Joe Hershberger <joe.hershberger@ni.com>
2018-07-30 07:18:48 -04:00
Masahiro Yamada
28b538b69d .gitignore: move *.dtb and *.dtb.S patterns to the top-level .gitignore
Follow Linux commit 10b62a2f785a (".gitignore: move *.dtb and *.dtb.S
patterns to the top-level .gitignore").

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2018-06-18 14:43:12 -04:00
Alexey Brodkin
2c3f9261c8 ARC: Add support for EM Development Kit board
Synopsys DesignWare ARC EM Development Kit (ARC EMDK) is
an FPGA-based development platform from Synopsys aimed to speed-up
development of software for ARC EM cores and entire subsystems based on
ARC EM like Data Fusion, Secure and Sensor & Control subsystems.

U-Boot is supposed to be used as a primary bootloader on EMDK allowing
users to easily load and start their application from micro-SD card.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-05-31 20:13:29 +03:00
Alexey Brodkin
7af51f12bc ARC: Use elf32-bigarc in case of -EB
As it is stated in LD manual [1] the second entry in OUTPUT_FORMAT
corresponds to "-EB" command-line option which for us is "elf32-bigarc".

[1] https://sourceware.org/binutils/docs/ld/Format-Commands.html#Format-Commands

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-05-31 20:13:29 +03:00
Alexey Brodkin
eb5c853938 ARC: Reset: Implement weak reset_cpu()
This will allow for board-specific implementation of reset.
Default version will just stop execution with help of BRK instruction.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-05-31 20:13:29 +03:00
Alexey Brodkin
8f187142e5 ARC: Reset: Use __builtin_arc_brk() instead of open-coded ASM
For quite some time we have a GCC's built-in which inserts BRK
instruction so let's use it instead of simple insertion of in-line
assembly.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-05-31 20:13:29 +03:00
Alexey Brodkin
ef2cd492ad ARC: Move .ivt section to the very beginning of the image
This is useful for cases when U-Boot image is put in ROM and
reset vector points to 0 where the very beginnign of the image reside.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-05-31 20:13:29 +03:00
Alexey Brodkin
ce3071287e ARC: Improve relocation fix-ups
We used to have the one and only linker script for all ARC boards
and so we relied on a particular order of symbols there.

Because of that we used __ivt_end as the marker of the end of all the
code which won't be true any longer if we move .ivt section to any other
place. That said we'd better check for each section separately.

A couple of other improvements:
 1. There's no point to include the marker of section end in interested
    range because its address is beyond the section, i.e. we should
    compare with "<" but not "<=".

 2. .ivt section for ARCv2 cores is just an array of 32-bit ints and
    they are not swapped even on little-endia cores while in case of
    ARCompact cores .ivt contains valid code so swapping is required.

 3. Just in case add check for ARC600 which is also ARCompact
    and its .ivt is normal code.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-05-31 20:13:29 +03:00
Alexey Brodkin
7530bb2175 ARC: Make sure .ivt section is not purged by garbage collector
Fixes commit fac4790491 ("arc: Eliminate unused code and data with GCC's garbage collector"),
see [1].

Since in case of ARCv2 .ivt only contains addrresses of
interrupt/exception handlers linker doesn't understand that this section
actually make a lot of sense and decides to get rid of it if we use
"--gc-sections".

And KEEP does exactly this, see [2].

[1] http://git.denx.de/?p=u-boot.git;a=commit;h=fac4790491f69b29755d92db2cad508849573ff7
[2] https://sourceware.org/binutils/docs/ld/Input-Section-Keep.html#Input-Section-Keep

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-05-31 20:13:29 +03:00
Alexey Brodkin
d0a5023a35 ARC: Cache: Don't compare I$ and D$ line lengths
We don't care much about I$ line length really as there're
no per-line ops on I$ instead we only do full invalidation of it
on occasion of relocation and right before jumping to the OS.

Also as compared to Linux kernel where we don't support different
lengths of I$ and D$ lines in U-Boot we have to deal with such an
exotic configs if the target board is not supposed to run Linux kernel.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-05-31 20:13:29 +03:00
Eugeniy Paltsev
429fa25e17 ARC: init debug uart in early common arc code
The debug UART is intended for use very early in U-Boot to debug
problems before serial drivers are up.

Call debug_uart_init right before board_init_f.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-05-24 15:59:17 +03:00
Tom Rini
83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00
Eugeniy Paltsev
474e9312a8 ARC: Remove unused DECLARE_GLOBAL_DATA_PTR from init_helpers.c
"Global data" structure "gd" is not used in init_helpers.c
thus DECLARE_GLOBAL_DATA_PTR might be safely removed.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-04-17 20:52:17 +03:00
Eugeniy Paltsev
f770b3ee18 ARC: HSDK: Enable SPI flash support
HSDK board has sst26wf016 SPI flash IC which we want to support.

Add SPI controller, CS-gpio and SPI flash nodes to hsdk device tree.
Enable corresponding options in hsdk defconfig.

For SPI write functionality to work we need [1] which
adds support of sst26xxx ICs.

[1] https://patchwork.ozlabs.org/project/uboot/list/?series=35796

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-04-02 12:27:56 +03:00
Eugeniy Paltsev
ada8affdfe ARC: HSDK: Add platform-specific commands
This patch add support of hsdk platform-specific commands:

hsdk_clock set - set clock from axi_freq, cpu_freq and tun_freq
environment variables/command line arguments

hsdk_clock get - save clock frequencies to axi_freq, cpu_freq
and tun_freq environment variables

hsdk_clock print - show CPU, AXI, DDR and TUNNEL current
clock frequencies.

hsdk_clock print_all - show all currently used clock frequencies.

hsdk_init - setup board HW in one of pre-defined configuration
(hsdk_hs34 / hsdk_hs36 / hsdk_hs36_ccm / hsdk_hs38 /
hsdk_hs38_ccm / hsdk_hs38x2 / hsdk_hs38x3 / hsdk_hs38x4)

hsdk_go - run baremetal application on hsdk configured
by hsdk_init command.

This patch changes default behaviour of 'bootm' command:
now we are able to set number of CPUs to be kicked by setting
'core_mask' environment variable before 'bootm' command run.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-04-02 12:27:56 +03:00
Eugeniy Paltsev
bdc9f02fab ARC: AXS10x: DTS: Remove unused interrupt properties
Some device tree nodes (like ethernet, ohci, ehci) in axs10x_mb.dtsi
were copied from linux device tree, so they have interrupts properties.
As we don't use interrupts in uboot we don't have interrupt controller
node in AXS10x device tree. In result we get warnings when we compile
such device tree.

So remove unused interrupts properties to get rid of this warnings.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-04-02 12:26:13 +03:00
Eugeniy Paltsev
f665c14f04 ARC: bootm: Refactor GO and PREP subcommands implementation
Refactor GO and PREP subcommands implementation for a simpler
override in the boards platform code.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-03-23 15:57:51 +03:00
Eugeniy Paltsev
6b85b26e4b ARC: Cache: Refactor arc_ioc_setup()
Move all checks before cache flush and IOC setup.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-03-21 17:06:55 +03:00
Eugeniy Paltsev
9f0253c61a ARC: Cache: Add missing cache cleanup before cache disable
Add missing cache cleanup before cache disable:
 * Flush and invalidate L1 D$ before disabling. Flush and invalidate
   SLC before L1 D$ disabling (as it will be bypassed for data)
   Otherwise we can lose some data when we disable L1 D$ if this data
   isn't flushed to next level cache. Or we can get wrong data if L1 D$
   has some entries after enable which we modified when the L1 D$ was
   disabled.
 * Invalidate L1 I$ before disabling. Otherwise we can execute wrong
   instructions after L1 I$ enable if we modified any code when
   L1 I$ was disabled.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-03-21 17:06:55 +03:00
Eugeniy Paltsev
7241944a5b ARC: Cache: Add more HW configuration checks
Add additional cache configuration checks and note about
supported configurations.

It is unlikely to face some configuration in real life but
it's better to be prepared and refuse to work on those.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-03-21 17:06:55 +03:00
Eugeniy Paltsev
375945bac2 ARC: Implement a function to sync and cleanup caches
Implement specialized function to clenup caches (and therefore
sync instruction and data caches) which can be used for cleanup before linux
launch or to sync caches during U-Boot self-relocation.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-03-21 17:06:54 +03:00
Eugeniy Paltsev
95336738f1 ARC: Cache: Fix SLC operations when SLC is bypassed for data
If L1 D$ is disabled SLC is bypassed for data and all
load/store requests are sent directly to main memory.

If L1 I$ is disabled SLC is NOT bypassed for instructions
and all instruction requests are fetched through SLC.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-03-21 17:06:54 +03:00
Eugeniy Paltsev
c75eeb0bcb ARC: Cache: Implement [i,d]cache_enabled() as separate functions
Implement icache_enabled() and dcache_enabled() as separate functions
which can be used with "inline" attribute. This is a preparation to
make them always_inline.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-03-21 17:06:54 +03:00
Eugeniy Paltsev
48b04832d8 ARC: Move IOC enabling to compile-time options
Use CONFIG_ARC_DBG_IOC_ENABLE Kconfig option instead of
ioc_enable global variable.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-03-21 17:06:54 +03:00
Eugeniy Paltsev
246ba284ec ARC: Cache: Move PAE exists check into slc_upper_region_init()
Move check for PAE existence into slc_upper_region_init()
instead of its caller as more appropriate place.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-03-21 17:06:54 +03:00
Eugeniy Paltsev
bf8974eda4 ARC: Move cache global variables to arch_global_data
There is a problem with current implementation if we start U-Boot
from ROM, as we use global variables before ther initialization,
so these variables get overwritten when we copy .data section
from ROM.

Instead we move these global variables into our "global data"
structure so that we may really start from ROM.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-03-21 17:06:54 +03:00
Eugeniy Paltsev
7579087320 ARC: Cache: Get rid of [slc,pae,icache,dcache]_exists global variables
There is a problem with current implementation if we start U-Boot
from ROM, as we use global variables before ther initialization,
so these variables get overwritten when we copy .data section
from ROM.

Instead we'll use icache_exists(), dcache_exists(), slc_exists(), pae_exists()
functions which directly check BCRs every time.

In U-Boot case ops are used only during self-relocation and DMA
so we shouldn't be hit by noticeable performance degradation.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-03-21 17:06:54 +03:00
Eugeniy Paltsev
ea9f6f1e87 ARC: Cache: Move SLC status check into slc_entire_op() and slc_rgn_op()
As of today we check SLC status before each call of __slc_rgn_op()
or __slc_entire_op(). So move status check into __slc_rgn_op()
and __slc_entire_op().

As we need to check status before *each* function execution and we
call slc_entire_op() and slc_rgn_op() from different places we add
this check directly into SLC entire/line functions instead of
their callers to avoid code duplication.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-03-21 17:06:54 +03:00
Eugeniy Paltsev
05c6a26a04 ARC: Cache: Use is_isa_arcv2() instead of CONFIG_ISA_ARCV2 ifdef
Use is_isa_arcv2() function where it is possible instead of
CONFIG_ISA_ARCV2 define check to make code cleaner at the same time
keeping pretty much the same functionality - code in branches
under "if (is_isa_arcv2())" won't be compiled if CONFIG_ISA_ARCV2
is not defined, still we need a couple of CONFIG_ISA_ARCV2
ifdefs to make compiler happy. That's because code in
!is_isa_x() branch gets compiled and only then gets optimized
away.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-03-21 17:06:54 +03:00
Eugeniy Paltsev
c877a8911d ARC: Cache: Allways check D$ status before entire/line ops
As we are planning to get rid of dozens of ifdef's in cache.c we
would better check D$ status before each entire/line operation
then check CONFIG_SYS_DCACHE_OFF config option.

This makes the code cleaner as well as D$ entire/line functions
remain functional even if we enable or disable D$ in run-time.

As we need to check status before *each* function execution and we
call D$ entire/line functions from different places we add
this check directly into D$ entire/line functions instead of
their callers to avoid code duplication.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-03-21 17:06:54 +03:00
Eugeniy Paltsev
88ae27eda3 ARC: Move BCR encodings to separate header file
We're starting to use more and more BCRs and having their
definitions in-lined in sources becomes a bit annoying
so we move it all to a separate header.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-03-21 17:06:54 +03:00