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2024-07-31config: Use CONFIG_SYS_BIG_ENDIAN in code whenever possibleJiaxun Yang1-5/+5
So CONFIG_SYS_BIG_ENDIAN is our cross architecture option for selecting machine endian, while the old CONFIG_CPU_BIG_ENDIAN is defined by Arc only. Use it whenever possible to ensure big endian code path is enabled for all possible big endian machines. Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
2024-07-15arc: Remove duplicate newlinesMarek Vasut1-2/+0
Drop all duplicate newlines. No functional change. Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
2024-05-20Restore patch series "arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"WIP/20May2024-nextTom Rini1-0/+2
As part of bringing the master branch back in to next, we need to allow for all of these changes to exist here. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
2024-05-19Revert "Merge patch series "arm: dts: am62-beagleplay: Fix Beagleplay Ethernet""Tom Rini1-2/+0
When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"' I failed to notice that b4 noticed it was based on next and so took that as the base commit and merged that part of next to master. This reverts commit c8ffd1356d42223cbb8c86280a083cc3c93e6426, reversing changes made to 2ee6f3a5f7550de3599faef9704e166e5dcace35. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
2024-05-06global: Make <asm/global_data.h> include <asm/u-boot.h>Tom Rini1-0/+2
This follows the example of RISC-V where <asm/global_data.h> includes <asm/u-boot.h> directly as "gd" includes a reference to bd_info already and so the first must include the second anyhow. We then remove <asm/u-boot.h> from all of the places which include references to "gd" an so have <asm/global_data.h> already. Signed-off-by: Tom Rini <trini@konsulko.com>
2023-12-21arc: Cleanup and audit usage of <config.h>Tom Rini3-5/+0
We need to include <config.h> directly when a file needs to have something such as CFG_SYS_SDRAM_SIZE referenced as this file is not automatically globally included and is most commonly indirectly included via common.h. Remove most cases of arc including config.h directly, but add it where needed. Further clean up the tb100 board config.h file so that we don't rely on config.h being included there for a value used in a single place. Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Tom Rini <trini@konsulko.com>
2023-08-09treewide: rework linker symbol declarations in sections headerShiji Yang1-2/+3
1. Convert all linker symbols to char[] type so that we can get the corresponding address by calling array name 'var' or its address '&var'. In this way, we can avoid some potential issues[1]. 2. Remove unused symbol '_TEXT_BASE'. It has been abandoned and has not been referenced by any source code. 3. Move '__data_end' to the arch x86's own sections header as it's only used by x86 arch. 4. Remove some duplicate declared linker symbols. Now we use the standard header file to declare them. [1] This patch fixes the boot failure on MIPS target. Error log: SPL: Image overlaps SPL Fixes: 1b8a1be1a1f1 ("spl: spl_legacy: Fix spl_end address") Signed-off-by: Shiji Yang <yangshiji66@outlook.com> Reviewed-by: Tom Rini <trini@konsulko.com>
2023-06-12global: Use proper project name U-BootMichal Simek1-1/+1
Use proper project name in comments, Kconfig, readmes. Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org> Reviewed-by: Stefan Roese <sr@denx.de> Reviewed-by: Qu Wenruo <wqu@suse.com> Signed-off-by: Michal Simek <michal.simek@amd.com> Link: https://lore.kernel.org/r/0dbdf0432405c1c38ffca55703b6737a48219e79.1684307818.git.michal.simek@amd.com
2023-01-20arc: Migrate ARC_MMU_VER to KconfigTom Rini1-10/+0
Move this value to Kconfig. Signed-off-by: Tom Rini <trini@konsulko.com>
2022-07-07Convert CONFIG_SYS_BOOT_RAMDISK_HIGH to KconfigTom Rini1-2/+0
This converts the following to Kconfig: CONFIG_SYS_BOOT_RAMDISK_HIGH Signed-off-by: Tom Rini <trini@konsulko.com>
2021-08-31Finish converting CONFIG_SYS_CACHELINE_SIZE to KconfigTom Rini1-3/+0
We move the SYS_CACHE_SHIFT_N options from arch/arm/Kconfig to arch/Kconfig, and introduce SYS_CACHE_SHIFT_4 to provide a size of 16. Introduce select statements for other architectures based on current usage. For MIPS, we take the existing arch-specific symbol and migrate to the generic symbol. This lets us remove a little bit of otherwise unused code. Cc: Alexey Brodkin <alexey.brodkin@synopsys.com> Cc: Anup Patel <anup.patel@wdc.com> Cc: Atish Patra <atish.patra@wdc.com> Cc: Bin Meng <bmeng.cn@gmail.com> Cc: Leo <ycliang@andestech.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Sean Anderson <seanga2@gmail.com> Cc: Simon Glass <sjg@chromium.org> Signed-off-by: Tom Rini <trini@konsulko.com> Acked-by: Sean Anderson <seanga2@gmail.com> Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com> Reviewed-by: Rick Chen <rick@andestech.com>
2021-06-23global_data: Ensure we have <config.h> when symbols are not in Kconfig yetTom Rini1-2/+0
All symbols that are defined in Kconfig will always be defined (or not) prior to preprocessing due to the -include directive while building. However, symbols which are not yet migrated will only be defined (or not) once the board config.h is included, via <config.h>. While the end goal must be to migrate all symbols, today we have cases where the size of gd will get mismatched within the build, based on include order. Mitigate this by making sure that any <asm/global_data.h> that uses symbols not in Kconfig does start with <config.h>. Remove this when not needed. Cc: Alexey Brodkin <alexey.brodkin@synopsys.com> Cc: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Cc: Huan Wang <alison.wang@nxp.com> Cc: Angelo Dureghello <angelo@sysam.it> Cc: Rick Chen <rick@andestech.com> Signed-off-by: Tom Rini <trini@konsulko.com>
2021-04-22lmb: move CONFIG_LMB in KconfigPatrick Delaunay1-2/+0
Migrate CONFIG_LMB in Kconfig. Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
2021-01-05arc: m68k: nds32: nios2: sh: xtensa: Add empty spl.h headerSimon Glass1-0/+0
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 <sjg@chromium.org>
2020-05-18common: Drop linux/bitops.h from common headerSimon Glass1-0/+2
Move this uncommon header out of the common header. Signed-off-by: Simon Glass <sjg@chromium.org>
2020-04-27ARC: HSDK-4xD: add CSM configuration supportEugeniy Paltsev1-0/+3
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 <Eugeniy.Paltsev@synopsys.com> Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2020-04-27ARC: ARCv2: handle DSP presence in HWEugeniy Paltsev1-0/+1
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 <Eugeniy.Paltsev@synopsys.com> Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2020-04-16ARC: CACHE: add support for SL$ disableEugeniy Paltsev1-0/+7
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 <Eugeniy.Paltsev@synopsys.com> Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2020-03-31ARC: IO: add MB for __raw_* memory accessorsEugeniy Paltsev1-23/+35
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 <Eugeniy.Paltsev@synopsys.com> Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2020-03-31ARC: IO: add compiler barriers to IO accessorsEugeniy Paltsev1-11/+19
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 <Eugeniy.Paltsev@synopsys.com> Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2020-03-31ARC: IO: add volatile to accessorsEugeniy Paltsev1-9/+15
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 <Eugeniy.Paltsev@synopsys.com> Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2020-02-20dma-mapping: add <asm/dma-mapping.h> for all architecturesMasahiro Yamada1-0/+1
To avoid "asm/dma-mapping.h: No such file or directory" error, we need something. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2020-02-12ARC: Switch to generic accessorsAlexey Brodkin1-129/+75
First of all 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. That in return allows us to be more universal and support wider variety of devices. And looking forward that will significantly reduce maintenance and simplify support of newer architectures. And while at it we add quad-word accessors like readq(), writeq() etc. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2019-01-25ARC: cache: define CONFIG_SYS_CACHELINE_SIZE as ARCH_DMA_MINALIGNAlexey Brodkin1-0/+3
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>
2018-12-03ARC: Improve identification of ARC coresAlexey Brodkin1-1/+24
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>
2018-09-10arch: types.h: factor out fixed width typedefs to int-ll64.hMasahiro Yamada1-34/+2
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>
2018-07-31ARC: Enable unaligned access in hardware if compiler uses itAlexey Brodkin1-0/+3
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>
2018-05-07SPDX: Convert all of our single license tags to Linux Kernel styleTom Rini15-30/+15
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>
2018-03-21ARC: Implement a function to sync and cleanup cachesEugeniy Paltsev1-0/+1
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: Move IOC enabling to compile-time optionsEugeniy Paltsev1-0/+5
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: Move cache global variables to arch_global_dataEugeniy Paltsev1-0/+6
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: Move BCR encodings to separate header fileEugeniy Paltsev1-0/+77
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>
2018-03-21ARC: Flush & invalidate D$ with a single commandEugeniy Paltsev1-0/+1
We don't implement separate flush_dcache_all() intentionally as entire data cache invalidation is dangerous operation even if we flush data cache right before invalidation. There is the real example: We may get stuck in the following code if we store any context (like BLINK register) on stack in invalidate_dcache_all() function. BLINK register is the register where return address is automatically saved when we do function call with instructions like 'bl'. void flush_dcache_all() { __dc_entire_op(OP_FLUSH); // Other code // } void invalidate_dcache_all() { __dc_entire_op(OP_INV); // Other code // } void foo(void) { flush_dcache_all(); invalidate_dcache_all(); } Now let's see what really happens during that code execution: foo() |->> call flush_dcache_all [return address is saved to BLINK register] [push BLINK] (save to stack) ![point 1] |->> call __dc_entire_op(OP_FLUSH) [return address is saved to BLINK register] [flush L1 D$] return [jump to BLINK] <<------ [other flush_dcache_all code] [pop BLINK] (get from stack) return [jump to BLINK] <<------ |->> call invalidate_dcache_all [return address is saved to BLINK register] [push BLINK] (save to stack) ![point 2] |->> call __dc_entire_op(OP_FLUSH) [return address is saved to BLINK register] [invalidate L1 D$] ![point 3] // Oops!!! // We lose return address from invalidate_dcache_all function: // we save it to stack and invalidate L1 D$ after that! return [jump to BLINK] <<------ [other invalidate_dcache_all code] [pop BLINK] (get from stack) // we don't have this data in L1 dcache as we invalidated it in [point 3] // so we get it from next memory level (for example DDR memory) // but in the memory we have value which we save in [point 1], which // is return address from flush_dcache_all function (instead of // address from current invalidate_dcache_all function which we // saved in [point 2] !) return [jump to BLINK] <<------ // As BLINK points to invalidate_dcache_all, we call it again and // loop forever. Fortunately we may do flush and invalidation of D$ with a single one instruction which automatically mitigates a situation described above. And because invalidate_dcache_all() isn't used in common U-Boot code we implement "flush and invalidate dcache all" instead. Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-03-21ARC: Introduce is_isa_X() functionsEugeniy Paltsev1-0/+11
Introduce is_isa_arcv2() and is_isa_arcompact() functions. These functions only check configuration options and return compile-time constant so they can be used instead of #ifdef's to to write cleaner code. Now we can write: -------------->8--------------- if (is_isa_arcv2()) ioc_configure(); -------------->8--------------- instead of: -------------->8--------------- ifdef CONFIG_ISA_ARCV2 ioc_configure(); endif -------------->8--------------- Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-03-21arc: Fine-tune implementation of memory barriersAlexey Brodkin1-4/+4
We improve on 2 things: 1. Only ARC HS family has "dmb" instructions so do compile-time check for automatically defined macro __ARCHS__. Previous check for ARCv2 ISA was not good enough because ARC EM family is v2 ISA as well but still "dmb" instaruction is not supported in EM family. 2. Still if there's no dedicated instruction for memory barrier let's at least insert compile-time barrier to make sure compiler deosn't reorder critical memory operations. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-03-21arc: Get rid of handwritten string routinesAlexey Brodkin1-26/+0
U-Boot is a bit special piese of software because it is being only executed once on power-on as compared to operating system for example. That's why we don't care much about performance optimizations instead we're more concerned about size. And up-to-date compilers might produce much smaller code compared to performance-optimized routines copy-pasted from the Linux kernel. Here's an example: ------------------------------->8-------------------------- --- size_asm_strings.txt +++ size_c_strings.txt @@ -1,2 +1,2 @@ text data bss dec hex filename - 121260 3784 3308 128352 1f560 u-boot + 120448 3784 3308 127540 1f234 u-boot ------------------------------->8-------------------------- See we were able to shave off ~800 bytes of .text section. Also usage of string routines implemented in C gives us an ability to support more HW flavors for free: generated instructions will match our target as long as correct compiler option is used. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-01-19ARC: ARCv2: Cache: Fixed operation without IOCEugeniy Paltsev1-0/+7
Previous SLC management implementation is broken. Seems like it was never sufficiently tested probably because most of the time IOC was used instead (i.e. no manual cache operations were done). Now if we disable IOC in U-boot we'll get a lot of errors while using DMA-enabled peripherals. This time we fix it by substitution of broken per-line SLC operations region operations as it is done in the Linux kernel (we took it from v4.14 which is the latest stable as of today). Among other things this implementation might be a bit faster because instead of iteration over each and every cache line we're taking care about entire region in one go. Main changes: * Replaced __slc_line_op (per line operations) by __slc_rgn_op (region operations). * Reworked __slc_entire_op to get rid of __after_slc_op and __before_slc_op functions. Note flush fix (flush only instead of flush-n-inv when OP_FLUSH is used, see [1] for more details) is already incorporated here. * Added SLC invalidation to invalidate_icache_all(). * Added (start >= end) check to invalidate_dcache_range() and flush_dcache_range() as some buggy drivers pass region start == end. * Added read-out of MMU BCR so we may know if PAE40 exists in HW and then act on a particular AUX regs accordingly. [1] http://lists.infradead.org/pipermail/linux-snps-arc/2018-January/003357.html Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2017-12-11ARC: add defines of some cache and xCCM AUX registersEugeniy Paltsev1-0/+6
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2017-12-11ARC: add macro to get CPU idEugeniy Paltsev1-0/+3
ARCNUM [15:8] field in ARC_AUX_IDENTITY register allows us to uniquely identify each core in a multi-core system. I.e. with help of this macro each core may get its index in SMP system. Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2017-12-10ARC: add asm/gpio.h to fix compilation error with CONFIG_CMD_GPIOEugeniy Paltsev1-0/+1
With CONFIG_CMD_GPIO compilation reports error: -------------------------->8--------------------- common/cmd_gpio.c:13:22: fatal error: asm/gpio.h: No such file or directory #include <asm/gpio.h> ^ -------------------------->8--------------------- Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2017-10-02arc: Use asm-generic/io.hPaul Burton1-28/+1
Convert the arc architecture to make use of the new asm-generic/io.h to provide address mapping functions. As the generic implementations are suitable for arc this is primarily a matter of removing code. Feedback from architecture maintainers is welcome. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Alexey Brodkin <alexey.brodkin@synopsys.com> Acked-by: Alexey Brodkin <abrodkin@synopsys.com>
2017-06-05arc: Make u-boot-arc.h a private headerSimon Glass1-0/+1
Rather than including this arch-specific header file in common.h, include it from within arc's u-boot.h header. Signed-off-by: Simon Glass <sjg@chromium.org>
2017-04-05board_f: Make relocation functions genericSimon Glass1-16/+0
This header file is used by three archs. It could be used by all of them since relocation is a common function. Move it into a generic file. Signed-off-by: Simon Glass <sjg@chromium.org>
2017-04-05board_f: Make init_helpers genericSimon Glass1-12/+0
This header file is used by two archs. It could be used by all of them since it allows the cache to be on during relocation. Move it into a generic file. Signed-off-by: Simon Glass <sjg@chromium.org>
2017-03-24drivers: timer: Introduce ARC timer driverVlad Zakharov1-0/+4
This commit introduces timer driver for ARC. ARC timers are configured via ARC AUX registers so we use special functions to access timer control registers. This driver allows utilization of either timer0 or timer1 depending on which one is available in real hardware. Essentially only existing timers should be mentioned in board's Device Tree description. Signed-off-by: Vlad Zakharov <vzakhar@synopsys.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2017-01-25Convert CONFIG_ARCH_EARLY_INIT_R to KconfigSimon Glass1-1/+0
This converts the following to Kconfig: CONFIG_ARCH_EARLY_INIT_R Signed-off-by: Simon Glass <sjg@chromium.org>
2016-09-23Remove arch/${ARCH}/include/asm/errno.hMasahiro Yamada1-1/+0
Unlike Linux, nothing about errno.h is arch-specific in U-Boot. As you see, all of arch/${ARCH}/include/asm/errno.h is just a wrapper of <asm-generic/errno.h>. Actually, U-Boot does not export headers to user-space, so we just have to care about the consistency in the U-Boot tree. Now all of include directives for <asm/errno.h> are gone. Deprecate <asm/errno.h>. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Alexey Brodkin <abrodkin@synopsys.com>
2016-08-05arc: No need in sections defined in sources with newer toolsAlexey Brodkin1-2/+0
Starting from arc-2016.03 GNU tools linker properly works with symbols defined in linker script and so external declarations are no longer required, dump them. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2016-07-04arc: make global_data.h usable in assembly filesAlexey Brodkin1-0/+2
Currently on attempt to use global_data.h in an assembly file following will happen: -------------------->8----------------- ./arch/arc/include/asm/global_data.h: Assembler messages: ./arch/arc/include/asm/global_data.h:11: Error: bad instruction 'struct arch_global_data{' ./arch/arc/include/asm/global_data.h:12: Error: junk at end of line, first unrecognized character is `}' scripts/Makefile.build:316: recipe for target 'arch/arc/lib/start.o' failed -------------------->8----------------- In this change we disable struct arch_global_data in ASM which fixes the issue above. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2016-06-13arc: Update data accessors with use of memory barriersAlexey Brodkin1-16/+79
Memory barriers are proven to be a requirement for both compiler and real hardware to properly serialize access to critical data. For example if CPU or data bus it uses may do reordering of data accesses absence of memory barriers might easily lead to very subtle and hard to debug data corruptions. This implementation was heavily borrowed from up to date Linux kernel. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
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