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2019-05-18CONFIG_SPL_SYS_[DI]CACHE_OFF: addTrevor Woerner
While converting CONFIG_SYS_[DI]CACHE_OFF to Kconfig, there are instances where these configuration items are conditional on SPL. This commit adds SPL variants of these configuration items, uses CONFIG_IS_ENABLED(), and updates the configurations as required. Acked-by: Alexey Brodkin <abrodkin@synopsys.com> Signed-off-by: Trevor Woerner <trevor@toganlabs.com> [trini: Make the default depend on the setting for full U-Boot, update more zynq hardware] Signed-off-by: Tom Rini <trini@konsulko.com>
2019-05-18CONFIG_SYS_[DI]CACHE_OFF: convert to KconfigTrevor Woerner
CONFIG_SYS_[DI]CACHE_OFF had been partially converted to Kconfig parameters; only for the ARC architecture. This patch turns these two parameters into Kconfig items everywhere else they are found. All of the include/configs/* and defconfig changes in this patch are for arm machines only. The Kconfig changes for arc, nds32, riscv, and xtensa have been included since these symbols are found in code under arch/{arc,nds32,riscv,xtensa}, however, no currently-defined include/configs/* or defconfigs for these architectures exist which include these symbols. These results have been confirmed with tools/moveconfig.py. Acked-by: Alexey Brodkin <abrodkin@snopsys.com> Signed-off-by: Trevor Woerner <trevor@toganlabs.com> [trini: Re-migrate for a few more boards] Signed-off-by: Tom Rini <trini@konsulko.com>
2019-04-18ARC: [plat-axs10x]: migrate to DM_MMCEugeniy Paltsev
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2019-04-18ARC: [plat-hsdk]: migrate to DM_MMCEugeniy Paltsev
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2019-04-12dts: switch spi-flash to jedec, spi-nor compatibleNeil Armstrong
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>
2019-01-25ARC: cache: define CONFIG_SYS_CACHELINE_SIZE as ARCH_DMA_MINALIGNAlexey Brodkin
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>
2019-01-25ARC: Fix iteration in arc_xx_version()Alexey Brodkin
"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>
2019-01-19Kconfig: Migrate BOUNCE_BUFFERPhilipp Tomsich
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]
2018-12-03ARC: Improve identification of ARC coresAlexey Brodkin
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>
2018-11-01emdk->emsdp: Rename boardAlexey Brodkin
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>
2018-10-15ARC: Don't use COMMON section for global not-initialized variablesAlexey Brodkin
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>
2018-10-12ARC: make generic print_cpuinfo() weakAlexey Brodkin
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>
2018-10-05arc: Add support for IoT development kitAlexey Brodkin
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>
2018-10-05ARC: Implement print_cpuinfo()Alexey Brodkin
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>
2018-10-05ARC: Add model property to boards .dtsAlexey Brodkin
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>
2018-10-05ARC: Don't pre-define CROSS_COMPILEAlexey Brodkin
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>
2018-09-10arch: types.h: factor out fixed width typedefs to int-ll64.hMasahiro Yamada
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>
2018-09-05ARC: HSDK: Fix timer frequency valueEugeniy Paltsev
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>
2018-07-31ARC: Enable unaligned access in hardware if compiler uses itAlexey Brodkin
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>
2018-07-31AXS10x: add spi flash supportEugeniy Paltsev
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>
2018-07-31GPIO: CREG: improve flexibility of hsdk-creg-gpio driverEugeniy Paltsev
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>
2018-07-30Kconfig: Sort bool, default, select and imply optionsMichal Simek
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>
2018-06-18.gitignore: move *.dtb and *.dtb.S patterns to the top-level .gitignoreMasahiro Yamada
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>
2018-05-31ARC: Add support for EM Development Kit boardAlexey Brodkin
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>
2018-05-31ARC: Use elf32-bigarc in case of -EBAlexey Brodkin
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>
2018-05-31ARC: Reset: Implement weak reset_cpu()Alexey Brodkin
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>
2018-05-31ARC: Reset: Use __builtin_arc_brk() instead of open-coded ASMAlexey Brodkin
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>
2018-05-31ARC: Move .ivt section to the very beginning of the imageAlexey Brodkin
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>
2018-05-31ARC: Improve relocation fix-upsAlexey Brodkin
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>
2018-05-31ARC: Make sure .ivt section is not purged by garbage collectorAlexey Brodkin
Fixes commit fac4790491f6 ("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>
2018-05-31ARC: Cache: Don't compare I$ and D$ line lengthsAlexey Brodkin
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>
2018-05-24ARC: init debug uart in early common arc codeEugeniy Paltsev
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>
2018-05-07SPDX: Convert all of our single license tags to Linux Kernel styleTom Rini
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>
2018-04-17ARC: Remove unused DECLARE_GLOBAL_DATA_PTR from init_helpers.cEugeniy Paltsev
"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>
2018-04-02ARC: HSDK: Enable SPI flash supportEugeniy Paltsev
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>
2018-04-02ARC: HSDK: Add platform-specific commandsEugeniy Paltsev
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>
2018-04-02ARC: AXS10x: DTS: Remove unused interrupt propertiesEugeniy Paltsev
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>
2018-03-23ARC: bootm: Refactor GO and PREP subcommands implementationEugeniy Paltsev
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>
2018-03-21ARC: Cache: Refactor arc_ioc_setup()Eugeniy Paltsev
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>
2018-03-21ARC: Cache: Add missing cache cleanup before cache disableEugeniy Paltsev
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>
2018-03-21ARC: Cache: Add more HW configuration checksEugeniy Paltsev
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>
2018-03-21ARC: Implement a function to sync and cleanup cachesEugeniy Paltsev
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>
2018-03-21ARC: Cache: Fix SLC operations when SLC is bypassed for dataEugeniy Paltsev
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>
2018-03-21ARC: Cache: Implement [i,d]cache_enabled() as separate functionsEugeniy Paltsev
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>
2018-03-21ARC: Move IOC enabling to compile-time optionsEugeniy Paltsev
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>
2018-03-21ARC: Cache: Move PAE exists check into slc_upper_region_init()Eugeniy Paltsev
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>
2018-03-21ARC: Move cache global variables to arch_global_dataEugeniy Paltsev
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>
2018-03-21ARC: Cache: Get rid of [slc,pae,icache,dcache]_exists global variablesEugeniy Paltsev
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>
2018-03-21ARC: Cache: Move SLC status check into slc_entire_op() and slc_rgn_op()Eugeniy Paltsev
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>
2018-03-21ARC: Cache: Use is_isa_arcv2() instead of CONFIG_ISA_ARCV2 ifdefEugeniy Paltsev
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>
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