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* ARM64: add optional EFI stubAhmad Fatoum2024-03-051-0/+4
| | | | | | | | | | | While very recent binutils releases have dedicated efi-*-aarch targets, we may want to support older toolchains. For this reason, we import the kernel's EFI stub PE fakery, so the same barebox-dt-2nd.img may be loaded as if it were a "normal" or an EFI-stubbed kernel. Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Link: https://lore.barebox.org/20240304190038.3486881-87-a.fatoum@pengutronix.de Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* filetype: add new file types for EFI-enabled Linux imagesAhmad Fatoum2024-03-051-0/+7
| | | | | | | | | | | | | We currently detect EFI-stubbed Linux images for ARM64 and RISC-V as normal kernel images and would boot them that way. As these images additionally start with MZ like normal PE executables, lets have new filetypes for them. No functional change yet, but we can use a different bootm handler for them in the future when boot is configured to be EFI-enabled. Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Link: https://lore.barebox.org/20240304190038.3486881-82-a.fatoum@pengutronix.de Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* ARM64: runtime-offset: make get_runtime_offset fully PICAhmad Fatoum2024-03-051-2/+3
| | | | | | | | | | | | | | | | | | | get_runtime_offset returns the offset that needs to be added onto code addresses to arrive at the runtime address. This is 0 after code relocation and the function calculates it by keeping a reference to _text and substituting it from the actual _text address, which is found out in a position-independent manner. For enabling barebox PBL text section to be mappable W^X, we need to avoid relocation entries within code, so let's move the runtime offset into the data section, which is always mapped writable. As ldr has only a 4K range for label references, we switch to ldr_l, which has a 4G range. Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Link: https://lore.barebox.org/20240304190038.3486881-58-a.fatoum@pengutronix.de Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* ARM: bootm barebox: page align barebox start addressThaison Phan2024-03-011-1/+1
| | | | | | | | | | | | | | | | The aarch64 bootm image handler for barebox can choose a load address that is not 4KB aligned. This can result in unexpected behavior with the ADRP instruction that is available in 64 bit ARM architectures. ADRP forms a PC-relative address to a 4KB page where the bottom 12 bits of the current PC will be masked out. When the load address of the barebox image is not 4KB aligned ADRP can end up forming an address that starts from an invalid page of memory or the wrong page of memory that was expected to be formed. The following patch aligns the load address for the next barebox image to be 4KB aligned to accommodate the ADRP instruction. Link: https://lore.barebox.org/CAFPn3sTc_3q04koG_oPnqTmhGnejxtiva+B5KwYsCdC3czCmKw@mail.gmail.com Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* Merge branch 'for-next/dump-stack-stderr'Sascha Hauer2023-09-251-3/+3
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| * ARM64: backtrace: print stacktrace to stderrAhmad Fatoum2023-09-121-3/+3
| | | | | | | | | | | | | | | | | | | | | | Rule of thumb is to print interactive output to stdout and status messages to stderr. A stack dump falls into the latter category and part of the stack trace is already printed to stderr, because of use of the logging functions, which always prints there. Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Link: https://lore.barebox.org/20230911125619.2782229-3-a.fatoum@pengutronix.de Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* | ARM: mark early C setup functions as __prerelocAhmad Fatoum2023-09-211-1/+1
|/ | | | | | | | | | | | | In preparation for adding stack protector support, we need to start marking functions run before the C environment is completely set up. Introduce a __prereloc attribute for this use case and an even stronger no noinstr (no instrumentation) attribute and start adding it at enough places for bareboxproper to start up with -fstack-protector-all. Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Link: https://lore.barebox.org/20230911150900.3584523-3-a.fatoum@pengutronix.de Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* ARM: lds: define and use BAREBOX_RELOCATION_TABLEAhmad Fatoum2022-10-111-7/+1
| | | | | | | | | | The structure of the relocation table is one of the main differences between different architectures' linker scripts. Hoist it out for ARM into <asm/barebox.lds.h>. Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Link: https://lore.barebox.org/20221010061122.2084009-8-a.fatoum@pengutronix.de Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* lds: move OUTPUT_FORMAT/ARCH definition into headerAhmad Fatoum2022-10-111-2/+2
| | | | | | | | | | In order to allow us having architecture-indepenent linker scripts, move the definition for the format and the architecture into the new <asm/barebox.lds.h> header file. Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Link: https://lore.barebox.org/20221010061122.2084009-7-a.fatoum@pengutronix.de Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* lds: introduce <asm/barebox.lds.h>Ahmad Fatoum2022-10-111-1/+1
| | | | | | | | | | | | | | We have a separate linker script for each architecture and one more for PBL if supported. All linker scripts include <asm-generic/barebox.lds.h>. In future, we may want to use a linker script common to more than one architecture. Prepare for this by having each architecture define a <asm/barebox.lds.h>. Currently, these files contain little more than 1-2 #include directives, but this will change in later commits. Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Link: https://lore.barebox.org/20221010061122.2084009-6-a.fatoum@pengutronix.de Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* arch: add SPDX-License-Identifier to all .c filesAhmad Fatoum2022-01-052-0/+4
| | | | | | | | | Record GPL-2.0-only as license for all files lacking an explicit license statement. Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Link: https://lore.barebox.org/20220103120539.1730644-11-a.fatoum@pengutronix.de Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* arch: add SPDX-License-Identifier to all .S filesAhmad Fatoum2022-01-051-0/+2
| | | | | | | | | Record GPL-2.0-only as license for all files lacking an explicit license statement. Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Link: https://lore.barebox.org/20220103120539.1730644-10-a.fatoum@pengutronix.de Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* treewide: add SPDX-License-Identifier for .gitignoreAhmad Fatoum2022-01-051-0/+2
| | | | | | | | | Makes the files not appear when searching for files that lack SPDX-License-Identifier. Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Link: https://lore.barebox.org/20220103120539.1730644-4-a.fatoum@pengutronix.de Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* treewide: add SPDX-License-Identifier for Kbuild/KconfigAhmad Fatoum2022-01-051-0/+2
| | | | | | | | | | | | | | | To verify only Kconfig/Makefile is touched: git show --numstat --format=oneline HEAD | grep -v 'Kconfig\|Makefile' will print only arch/powerpc/Kbuild. To verify nothing unexpected is added: git show -U0 | grep '^-[^-]\|^+[^+]' | sort -u Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Link: https://lore.barebox.org/20220103120539.1730644-3-a.fatoum@pengutronix.de Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* Merge branch 'for-next/rockchip'Sascha Hauer2021-07-182-1/+99
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| * ARM64: Implement mem*_*io()Sascha Hauer2021-06-282-1/+99
| | | | | | | | | | | | | | | | | | | | This adds memset_io(), memcpy_fromio() and memcpy_toio(). These have not been defined for ARM64 previously. The code is directly taken from the Kernel. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Link: https://lore.barebox.org/20210622075413.6659-1-s.hauer@pengutronix.de Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* | Merge branch 'for-next/firmware'Sascha Hauer2021-07-181-0/+5
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| * | blspec: Rework firmware loadSascha Hauer2021-06-281-0/+5
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Applying overlays in blspec currently works in two steps. First of_firmware_load_overlay() is called which doesn't load an overlay, but instead loads firmware when one is needed by the overlay. This is done on the live tree, because that was needed to find the firmware manager. The second step is to call of_register_overlay() to apply the overlay to the kernel device tree when the fixups are executed. Instead of using a separate step to load the firmware, load the firmware as part of the of_fixups. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Link: https://lore.barebox.org/20210624085223.14616-14-s.hauer@pengutronix.de Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* / arm64: bootm: Add dryrun checkSascha Hauer2021-06-231-0/+3
|/ | | | | | | | Abort booting in time when doing a dryrun boot. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Link: https://lore.barebox.org/20210623043726.8620-1-s.hauer@pengutronix.de Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* bootm: move ARM64 Linux image parsing to common directoryAhmad Fatoum2021-05-171-69/+5
| | | | | | | | | | | Linux on RISC-V adopts the same structure as on ARM64 for both 32- and 64-bit kernel images and it's likely future architectures will as well. In preparation for adding RISC-V Linux boot support, move the bulk of the code to a common location for reusability. Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Link: https://lore.barebox.org/20210504104513.2640-1-a.fatoum@pengutronix.de Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* ARM: aarch64: omit unused label in assemblyAhmad Fatoum2021-03-231-1/+1
| | | | | | | | The 1: is a left-over from before 5f04e5e03e94 ("ARM: aarch64: Fix get_runtime_offset after relocation"). It's unused now, so drop it. Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* ARM: asm: setjmp: implement coroutine dependency initjmp()Ahmad Fatoum2021-03-171-0/+9
| | | | | | | Implement initjmp() for use with the incoming bthread support. Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* ARM: Add KASan supportSascha Hauer2020-09-221-5/+21
| | | | | | | | | | | | | | This adds KASan support to the ARM architecture. What we are doing is: * Add __no_sanitize_address attribute to various lowlevel functions which do not run in a proper C environment * Add non-instrumented variants of memset/memcpy (prefixed with '__') * make original memcpy/memset weak symbols so strong definitions in lib/kasan/common.c can replace them * Use non-instrumented memcpy in early functions * call kasan_init() Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* arch/arm/lib64: Convert to SPDX-License and -Copyright specifiersUwe Kleine-König2020-07-145-56/+9
| | | | | | | | | Converts the files that licensecheck can determine the license for. Also convert to obvious right Copyright statements. Additionally some minor code reformatting is done. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* treewide: Convert files covered by ARM copyright to SPDXUwe Kleine-König2020-07-143-46/+12
| | | | | | | | | | According to Marc Zyngier, former employee at ARM, the company owns the copyright for code created by its employees. Convert accordingly to SPDX with the usual rearrangements. Also dropped Marc's email address which doesn't work any more. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* treewide: remove references to CREDITSUwe Kleine-König2020-04-272-6/+0
| | | | | | | | The CREDITS file was removed from barebox in 2015 by commit 6570288f2d97 ("Remove the CREDITS file"). Remove references to it from several files. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* ARM64: add support for booting a FIT imageLucas Stach2020-03-021-2/+13
| | | | | | | | | | Add the image type handler to the ARM64 boot code. The only difference in the boot handling is that we need to look at the FIT loaded OS image header to get the image load and text offsets, as the os_header is the FIT header, not the kernel header. Signed-off-by: Lucas Stach <l.stach@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* ARM: import setjmp implementation from U-BootRouven Czerwinski2020-01-302-0/+41
| | | | | Signed-off-by: Rouven Czerwinski <r.czerwinski@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* ARM: aarch64: Add support for passing initrd to LinuxAndrey Smirnov2019-12-201-1/+13
| | | | | | | This adds basic support for passing intird to Linux Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* lds: Add and use RO_DATA_SECTION macroSascha Hauer2019-10-141-12/+4
| | | | | | | | | We have many different pointer arrays which we put into linker sections and each time there's one added we have to adjust all linker scripts. This adds a common RO_DATA_SECTION define and uses it for all architectures. This makes it easier to add a new linker array. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* lds: create and use BAREBOX_PCI_FIXUP macroSascha Hauer2019-10-141-14/+1
| | | | | | | No need to repeat the pci fixup sections in each linker script. Add a define for it. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* lds: Move start/end address variables into definesSascha Hauer2019-10-141-19/+2
| | | | | | | | | | | For the older section defines we specify the start and end addresses outside the macro which means we have to repeat them in each linker script. Make the start/end addresses part of the define to simplify things. While at it, add a BAREBOX_ prefix to the INITCALLS and EXITCALLS macros for consistency to the other defines. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Acked-by: Sam Ravnborg <sam@ravnborg.org>
* barebox.lds: Remove unnecessary bracesSascha Hauer2019-10-141-2/+2
| | | | | | | The BAREBOX_CLK_TABLE and BAREBOX_DTB macros are defines that do not take a parameter, so we can remove the braces. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* ARM: aarch64: add image markers to linker scriptRouven Czerwinski2019-10-021-0/+4
| | | | | | | | | | | | The __image_start and __image_end marker are used by barebox to calculate the size of the barebox binary inside the RAM. Without the definitions barebox calculates its own size to zero, which works until a certain size is exceeded, than the PBL will place the binary lower into memory than the calculation inside barebox. Fix this by adding the appropriate image markers to the linker script. Signed-off-by: Rouven Czerwinski <r.czerwinski@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* ARM: aarch64: Fix get_runtime_offset after relocationSascha Hauer2019-08-231-15/+9
| | | | | | | | | | | | | | | | | | | | | | | get_runtime_offset shall return the offset between the address we are running at and the address we are linked at. This value obviously changes when we relocate the binary. cf3b09737b tried to avoid using R_AARCH64_RELATIVE relocations, but in fact this is exactly what the function needs to work. Consider barebox starting at 0x10000000 when we are linked at 0x0 then get_runtime_offset() should return 0x10000000 before relocate_to_current_adr(), but afterwards it should return 0x0. This patch brings back the previously removed "a" flag. Since gcc5 doesn't put the values of R_AARCH64_RELATIVE fixup'd relocations into the binary but zeroes instead, we help ourselves by basing get_runtime_offset on an address which actually is zero. With CONFIG_RELOCATABLE=y the binary is always linked to 0x0, so _text is initially zero. Tested with gcc-5.4.0 (which was "fixed" by cf3b09737b) and gcc-8.2.1. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Acked-by: Rouven Czerwinski <r.czerwinski@pengutronix.de>
* ARM: Add arm64 pbl udelaySascha Hauer2019-03-132-1/+18
| | | | | | | PBL often needs a way to udelay execution. Since we have a generic timer in ARMv8 we can implement a generic udelay. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* Merge branch 'for-next/imx'Sascha Hauer2019-02-131-0/+12
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| * ARM: aarch64: Add PCI fixups section to linker scriptAndrey Smirnov2019-02-111-0/+12
| | | | | | | | | | | | | | | | Add PCI fixups section to linker script, so it would be possible to enable PCI support. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* | ARM: aarch64: Avoid relocations in runtime-offset.SAndrey Smirnov2019-02-011-1/+13
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since get_runtime_offset() is executed as a part of reloaction logic, it cannot have code dependend on any kind of relocation. Unfortunately, current codebase violates this rule and linkadr: .quad get_runtime_offset ends up producing R_AARCH64_RELATIVE relocation that has to be resolved at runtime. From tiral and error experimentation it seems that the simplest way to do this is to drop "a" (allocatable) attribute fom the section directive in runtime-offset.S With "a" (see first entry): aarch64-linux-gnu-objdump -R images/start_zii_imx8mq_dev.pbl images/start_zii_imx8mq_dev.pbl: file format elf64-littleaarch64 DYNAMIC RELOCATION RECORDS OFFSET TYPE VALUE 00000000000000b0 R_AARCH64_RELATIVE *ABS*+0x00000000000000a0 0000000000004258 R_AARCH64_RELATIVE *ABS*+0x0000000000028118 0000000000004260 R_AARCH64_RELATIVE *ABS*+0x0000000000028128 00000000000042e0 R_AARCH64_RELATIVE *ABS* 00000000000042e8 R_AARCH64_RELATIVE *ABS*+0x0000000000028118 00000000000042f0 R_AARCH64_RELATIVE *ABS*+0x00000000000042c8 Without "a": aarch64-linux-gnu-objdump -R images/start_zii_imx8mq_dev.pbl images/start_zii_imx8mq_dev.pbl: file format elf64-littleaarch64 DYNAMIC RELOCATION RECORDS OFFSET TYPE VALUE 0000000000004258 R_AARCH64_RELATIVE *ABS*+0x0000000000028100 0000000000004260 R_AARCH64_RELATIVE *ABS*+0x0000000000028110 00000000000042e0 R_AARCH64_RELATIVE *ABS* 00000000000042e8 R_AARCH64_RELATIVE *ABS*+0x0000000000028100 00000000000042f0 R_AARCH64_RELATIVE *ABS*+0x00000000000042c8 Note that on recent toolchains (tested on 8.1.1), this problem is masked by the fact that .quad get_runtime_offset will be initialized with link-time value of "get_runtime_offset" in addition to having a R_AARCH64_RELATIVE relocation. 00000000000000a0 <get_runtime_offset>: a0: 10000000 adr x0, a0 <get_runtime_offset> a4: 58000061 ldr x1, b0 <linkadr> a8: eb010000 subs x0, x0, x1 ac: d65f03c0 ret 00000000000000b0 <linkadr>: b0: 000000a0 .word 0x000000a0 b4: 00000000 .word 0x00000000 _However_, older toolchains (tested on 5.5.0), will only issue a R_AARCH64_RELATIVE, so memory location will contain only zeroes: 00000000000000a0 <get_runtime_offset>: a0: 10000000 adr x0, a0 <get_runtime_offset> a4: 58000061 ldr x1, b0 <linkadr> a8: eb010000 subs x0, x0, x1 ac: d65f03c0 ret 00000000000000b0 <linkadr>: ... This leads to an very early crash and complete boot failure in the latter case. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* ARM: lib64: .gitignore barebox.ldsMichael Tretter2018-12-101-0/+1
| | | | | | | | | | | | | | Commit e1287b1a8b27 ("arm: rework lib directory to support arm64") restructured the lib directory and added the lib64 directory. It moved the existing .gitignore to the lib32 directory but didn't add a new .gitignore for lib64. Thus building Barebox for arm64 results in stray barebox.lds files. Copy the .gitignore from lib32 to lib64. Signed-off-by: Michael Tretter <m.tretter@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* ARM64: backtrace: fix missing prototypesLucas Stach2018-12-031-1/+2
| | | | | | | | Include header for unwind_backtrace prototype and mark dump_backtrace_entry as static. Signed-off-by: Lucas Stach <l.stach@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* Merge branch 'for-next/bootm'Sascha Hauer2018-07-091-1/+11
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| * bootm: Split bootm_load_devicetree into two functionsSascha Hauer2018-06-151-1/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | It is not always desired to get the devicetree from image data and load it to a SDRAM region at the same time. Sometimes it's enough to just load it to an allocated address (in case the user has no constraints where the devicetree should be placed. This patch splits bootm_load_devicetree into bootm_get_devicetree which returns a pointer to the allocated devicetree and bootm_load_devicetree which loads the devicetree to a specified region. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* | ARM: lib64: Make string functions aware of MMU configurationAndrey Smirnov2018-06-114-6/+28
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Optimized version of memset() in memset.S if called as: memset(foo, 0, size) will try to explicitly zero out data cache with: dc zva, dst which will result in Alignement Exception (DABT) if MMU is not enabled. For more info see: - C4.4.8 "DC ZVA, Data Cache Zero by VA" - D5.2.8 "The effects of disabling a stage of address translation" in "ARM Architecture Reference Manual. ARMv8, for ARMv8-A architecture profile" In similar vein, using optimized version of memcpy() could lead to a unaligned 16-byte write (using 'stp'), which is not allowed for Device-nGnRnE type of memory (see D5.2.8) and would liead to Alignement Exception. To fix both problems expose non-optimized and optimzied versions of the function and created a wrapper to dispatch the call to either one based on if MMU is enabled or not. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* ARM: aarch64: Add support to start kernel and bareboxSascha Hauer2018-04-041-22/+98
| | | | | | | aarch64 has its own image format. Add a bootm handler to handle this format. Also add a barebox handler. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* ARM: aarch64: implement stacktracesSascha Hauer2018-03-292-0/+87
| | | | | | | | Implement stacktraces as a great debugging aid. On aarch64 this is cheap enough to be enabled unconditionally. Unwinding code is taken from the Kernel. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* ARM: aarch64: remove dead code in linker scriptSascha Hauer2018-03-291-16/+0
| | | | | | CONFIG_ARM_UNWIND does not exist for aarch64. Remove the dead code. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* ARM: aarch64: Add runtime-offsetSascha Hauer2018-03-212-0/+20
| | | | Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* ARM: move away from ld_varSascha Hauer2018-03-211-13/+9
| | | | | | | | | | | | | | The ld_var solves the issue that when compiled with -pie the linker provided variables are all 0x0. This mechanism however refuses to compile with aarch64 support. This patch replaces the ld_var mechanism with a nice little trick learned from U-Boot: Instead of using linker provided variables directly with "__bss_start = ." we put a zero size array into a separate section and use the address of that array instead of the linker variable. This properly works before relocation. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* ratp: implement generic command supportAleksander Morgado2018-03-011-0/+4
| | | | | | | | | | | | | | | | | | | The RATP implementation now allows executing generic commands with a binary interface: binary requests are received and binary responses are returned. Each command can define its own RATP request contents (e.g. to specify command-specific options) as well as its own RATP response contents (if any data is to be returned). Each command is associated with a pair of numeric unique request and response IDs, and for easy reference these IDs are maintained in the common ratp_bb header. Modules may override generic implemented commands or include their own new ones (as long as the numeric IDs introduced are unique). Signed-off-by: Aleksander Morgado <aleksander@aleksander.es> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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