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2023-11-02arm: armv8: mmu: Prepare for common.h removalPaul Barker
If <common.h> won't be included before <asm/armv8/mmu.h>, we need to ensure that we have the required type definitions. Signed-off-by: Paul Barker <paul.barker.ct@bp.renesas.com>
2023-10-22sunxi: psci: stop modeling register layout with C structsSam Edwards
Since the sunxi support nowadays generally prefers #defined register offsets instead of modeling register layouts using C structs, now is a good time to do this for PSCI as well. This patch moves away from using the structs `sunxi_cpucfg_reg` and `sunxi_prcm_reg` in psci.c. The former struct and its associated header file existed only to support PSCI code, so also delete them altogether. Signed-off-by: Sam Edwards <CFSworks@gmail.com> Reviewed-by: Andre Przywara <andre.przywara@arm.com>
2023-10-22sunxi: refactor serial base addresses to avoid asm/arch/cpu.hAndre Przywara
At the moment we have each SoC's memory map defined in its own cpu.h, which is included in include/configs/sunxi_common.h. This will be a problem with the introduction of Allwinner RISC-V support. Remove the inclusion of that header file from the common config header, instead move the required serial base addresses (for the SPL) into a separate header file. Then include the original cpu.h file only where we really need it, which is only under arch/arm now. This disentangles the architecture specific header files from the generic code. Signed-off-by: Andre Przywara <andre.przywara@arm.com>
2023-10-22sunxi: add Allwinner R528/T113 SoC supportAndre Przywara
This adds the remaining code bits to teach U-Boot about Allwinner's newest SoC generation. This was introduced with the RISC-V based Allwinner D1 SoC, which actually shares a die with the ARM cores versions called R528 (BGA, without DRAM) and T113s (QFP, with embedded DRAM). This adds the new Kconfig stanza, using the two newly introduced symbols for the new SoC generation and pincontroller. It also adds the new symbols to the relavent code places, to set all the hardcoded bits directly. We need one DT override: The ARM core version of the DT specifies the CPUX watchdog as "reserved", which means it won't be recognised by U-Boot. Override this in our generic sunxi-u-boot.dtsi, to let U-Boot pick up this watchdog, so that the generic reset driver will work. Signed-off-by: Andre Przywara <andre.przywara@arm.com>
2023-10-22sunxi: clock: support D1/R528 PLL6 clockAndre Przywara
The PLL_PERIPH0 clock changed a bit in the D1/R528/T113s SoCs: there is new P0 divider at bits [18:16], and the M divider is 1. Add code to support this version of "PLL6". Signed-off-by: Andre Przywara <andre.przywara@arm.com>
2023-10-22sunxi: clock: D1/R528: Enable PLL LDO during PLL1 setupAndre Przywara
The D1/R528/T113s SoCs introduce a new "LDO enable" bit in the CPUX_PLL. Just enable that when we program that PLL. Signed-off-by: Andre Przywara <andre.przywara@arm.com>
2023-10-22sunxi: introduce NCAT2 generation modelAndre Przywara
Allwinner seems to typically stick to a common MMIO memory map for several SoCs, but from time to time does some breaking changes, which also introduce new generations of some peripherals. The last time this happened with the H6, which apart from re-organising the base addresses also changed the clock controller significantly. We added a CONFIG_SUN50I_GEN_H6 symbol back then to mark SoCs sharing those traits. Now the Allwinner D1 changes the memory map again, and also extends the pincontroller, among other peripherals. To mark this generation of SoCs, add a CONFIG_SUNXI_GEN_NCAT2 symbol, this name is reportedly used in the Allwinner BSP code, and prevents us from inventing our own name. Add this new symbol to some guards that were already checking for the H6 generation, since many features are shared between the two (like the renovated clock controller). This paves the way to introduce a first user of this generation. Signed-off-by: Andre Przywara <andre.przywara@arm.com> Tested-by: Samuel Holland <samuel@sholland.org>
2023-10-22pinctrl: sunxi: move PIO_BASE into sunxi_gpio.hAndre Przywara
On the Allwinner platform we were describing a quite comprehensive memory map in a per-SoC header unser arch/arm. In the old days that was used by every driver, but nowadays it should only be needed by SPL drivers (not using the DT). Many addresses in there were never used, and some are not needed anymore. To avoid a dependency on CPU specific headers in an arch specific directory, move the definition of the pinctroller MMIO base address into the sunxi_gpio.h header, because the SPL routines for GPIO should be the only one needing this address. This is a first step towards getting rid of cpu_sun[x]i.h completely, and allows to remove the inclusion of that file from the sunxi_gpio.h header. Signed-off-by: Andre Przywara <andre.przywara@arm.com>
2023-10-22pinctrl: sunxi: remove GPIO_EXTRA_HEADERAndre Przywara
U-Boot's generic GPIO_EXTRA_HEADER is a convenience symbol to allow code to more easily include platform specific GPIO headers. This should not be needed in a DM world anymore, since the generic GPIO framework handles that nicely. For Allwinner boards we still need to deal with non-DM GPIO in the SPL, but this should become the exception, not the rule. Make this more obvious by removing the definition of GPIO_EXTRA_HEADER, and just force every legacy user of platform specific GPIO to include the new sunxi_gpio.h header explicitly. Everyone doing so should feel ashamed and should find a way to avoid it from now on. Signed-off-by: Andre Przywara <andre.przywara@arm.com> Tested-by: Samuel Holland <samuel@sholland.org>
2023-10-22pinctrl: sunxi: remove struct sunxi_gpioAndre Przywara
So far every Allwinner SoC used the same basic pincontroller/GPIO register frame, and just differed by the number of implemented banks and pins, plus some special functionality from time to time. However the D1 and successors use a slightly different pinctrl register layout. Use that opportunity to drop "struct sunxi_gpio", that described that MMIO frame in a C struct. That approach is somewhat frowned upon in the Linux world and rarely used there, though still popular with U-Boot. Switching from a C struct to a "base address plus offset" approach allows to switch between the two models more dynamically, without reverting to preprocessor macros and #ifdef's. Model the pinctrl MMIO register frame in the usual "base address + offset" way, and replace a hard-to-parse CPP macro with a more readable static function. All the users get converted over. There are no functional changes at this point, it just prepares the stages for the D1 and friends. Signed-off-by: Andre Przywara <andre.przywara@arm.com> Reviewed-by: Samuel Holland <samuel@sholland.org> Tested-by: Samuel Holland <samuel@sholland.org>
2023-10-22pinctrl: sunxi: move pinctrl codeAndre Przywara
Move the existing sunxi-specific low level pinctrl routines from arch/arm/mach-sunxi into the existing GPIO code under drivers/gpio, so that the common code can be shared outside of arch/arm. This also takes the opportunity to move some definitions from our header file into the driver C file, as they are private to the driver and are not needed elsewhere. Signed-off-by: Andre Przywara <andre.przywara@arm.com> Reviewed-by: Samuel Holland <samuel@sholland.org> Tested-by: Samuel Holland <samuel@sholland.org>
2023-10-17arm: imx: Check header before calling spl_load_imx_containerSean Anderson
Make sure we have an IMX header before calling spl_load_imx_container, since if we don't it will fail with -ENOENT. This allows us to fall back to legacy/raw images if they are also enabled. This is a functional change, one which likely should have been in place from the start, but a functional change nonetheless. Previously, all non-IMX8 images (except FITs without FIT_FULL) would be optimized out if the only image load method enabled supported IMX8 images. With this change, support for other image types now has an effect. There are seven boards with SPL_LOAD_IMX_CONTAINER enabled: three with SPL_BOOTROM_SUPPORT: imx93_11x11_evk_ld imx93_11x11_evk imx8ulp_evk and four with SPL_MMC: deneb imx8qxp_mek giedi imx8qm_mek All of these boards also have SPL_RAW_IMAGE_SUPPORT and SPL_LEGACY_IMAGE_FORMAT enabled as well. However, none have FIT support enabled. Of the six load methods affected by this patch, only SPL_MMC and SPL_BOOTROM_SUPPORT are enabled with SPL_LOAD_IMX_CONTAINER. spl_romapi_load_image_seekable does not support legacy or raw images, so there is no growth. However, mmc_load_image_raw_sector does support loading legacy/raw images. Since these images could not have been booted before, I have disabled support for legacy/raw images on these four boards. This reduces bloat from around 800 bytes to around 200. There are no in-tree boards with SPL_LOAD_IMX_CONTAINER and AHAB_BOOT both enabled, so we do not need to worry about potentially falling back to legacy images in a secure boot scenario. Future work could include merging imx_container.h with imx8image.h, since they appear to define mostly the same structures. Signed-off-by: Sean Anderson <seanga2@gmail.com>
2023-10-17arm: imx: Add function to validate i.MX8 containersSean Anderson
Add a function to abstract the common task of validating i.MX8 container image headers. Signed-off-by: Sean Anderson <seanga2@gmail.com>
2023-10-12clk: Add clock driver for Amlogic A1Igor Prusov
This patch adds basic clock driver for Amlogic A1 Family which supports enabling/disabling some gates, getting frequencies and setting rate with limited reparenting. Signed-off-by: Igor Prusov <ivprusov@salutedevices.com> Reviewed-by: Simon Glass <sjg@chromium.org> Link: https://lore.kernel.org/r/20230925155209.130671-3-ivprusov@salutedevices.com Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
2023-10-11driver: rng: Add DM_RNG interface for ARMv8.5 RNDR registersAndre Przywara
The ARMv8.5 architecture extension defines architectural RNDR/RNDRRS system registers, that provide 64 bits worth of randomness on every read. Since it's an extension, and implementing it is optional, there is a field in the ID_AA64ISAR0_EL1 ID register to query the availability of those registers. Add a UCLASS_RNG driver that returns entropy via repeated reads from those system registers, if the extension is implemented. The driver always binds, but checks the availability in the probe() routine. This helps systems which suffer from low boot entropy, since U-Boot can provide entropy via the generic UEFI entropy gathering protocol to the OS, at an early stage. Signed-off-by: Andre Przywara <andre.przywara@arm.com> Reviewed-by: Simon Glass <sjg@chromium.org>
2023-10-10fsl-layerscape: drop obsolete PPA secure firmware supportLaurentiu Tudor
PPA was a secure firmware developed in-house which is no longer supported and replaced by TF-A quite some years ago. Drop support for it. Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com> Signed-off-by: Peng Fan <peng.fan@nxp.com>
2023-09-22Record the position of the SMBIOS tablesSimon Glass
Remember where these end up so that we can pass this information on to the EFI layer. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2023-08-21Merge tag 'v2023.10-rc3' into nextTom Rini
Prepare v2023.10-rc3 Signed-off-by: Tom Rini <trini@konsulko.com>
2023-08-18Merge tag 'tegra-for-2023.10-rc1' of ↵Tom Rini
https://source.denx.de/u-boot/custodians/u-boot-tegra ARM: tegra: Changes for v2023.10-rc1 This adds support for various new Tegra30 boards (ASUS, LG and HTC) and has some other minor enhancements, such as enabling the poweroff command on several Tegra210 and Tegra186 boards.
2023-08-17arm: Use builtins for ffs/flsSean Anderson
Since ARMv5, the clz instruction allows for efficient implementation of ffs/fls with builtins. Until ARMv7 (with Thumb-2), this instruction is only available in ARM mode. LTO makes it difficult to force specific functions to be in ARM mode, as it is effectively a form of very aggressive inlining. To work around this, fls/ffs are implemented in assembly for ARMv5 and ARMv6 when compiling U-Boot in Thumb mode. Overall, this saves around 75 bytes per call. This code is synced with v5.15 of the Linux kernel. Signed-off-by: Sean Anderson <sean.anderson@seco.com> Reviewed-by: Tom Rini <trini@konsulko.com>
2023-08-12clk: rockchip: rk3308: Support reading UART rate and clock registersMassimo Pegorer
Add support to read RK3308 registers used to configure UART clocks, and thus to get UART rate and baudrate. This fixes clock_get_rate returning error on serial device probing. Moreover, there is no need anymore to use 'clock-frequency' property for UART nodes in *-u-boot.dtsi files for all cases where UART is not inited by U-Boot proper or by SPL o by TPL code but by a preliminary external boot phase (for Rock PI S, UART is inited by external TPL). Signed-off-by: Massimo Pegorer <massimo.pegorer+oss@gmail.com> Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
2023-08-12clk: rockchip: rk3568: Fix mask for clk_cpll_div_25m_divJonas Karlman
The field for clk_cpll_div_25m_div in CRU_CLKSEL_CON81 is 6 bits wide, not 5 bits wide as currently defined in CPLL_25M_DIV_MASK. Fix this and the assert so that CPLL_25M can be assigned a 25 MHz rate. Fixes: 4a262feba3a5 ("rockchip: rk3568: add clock driver") Signed-off-by: Jonas Karlman <jonas@kwiboo.se> Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
2023-08-12rockchip: cru: Enable cpu info support for rk3568Anton
Add cru structure definition in head file to support cpu_info driver. Series-version: 2 Series-changes: 2 Format the patch header, add commit message and signature. Signed-off-by: Anton <vao@asu-vei.ru> Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
2023-08-09treewide: rework linker symbol declarations in sections headerShiji Yang
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>
2023-07-21Merge branch 'master' of https://source.denx.de/u-boot/custodians/u-boot-sunxiTom Rini
For once this adds USB support for two SoCs: the H616 and the F1C100s series. The rest is support for LPDDR3 DRAM chips on H616 boards. Gitlab CI passed, and I booted that briefly on an H616 and an F1C200s board. I don't have an H616 board with LPDDR3 DRAM, but reportedly that works for Mikhail, and doesn't regress on my DDR3 boards.
2023-07-21sunxi: H616: dram: split struct dram_paraAndre Przywara
Currently there is one DRAM parameter struct for the Allwinner H616 DRAM "driver". It contains many fields that are compile time constants (set by Kconfig variables), though there are also some fields that are probed and changed over the runtime of the DRAM initialisation. Because of this mixture, the compiler cannot properly optimise the code for size, as it does not consider constant propagation in its full potential. Help the compiler out by splitting that structure into two: one that only contains values known at compile time, and another one where the values will actually change. The former can then be declared "const", which will let the compiler fold its values directly into the code using it. We also add "const" tags for some new "struct dram_config" pointers, to further increase code optimisation. To help the compiler optimise the code further, the definition of the now "const struct dram_para" has to happen at a file-global level, so move that part out of sunxi_dram_init(). That results in quite some code savings (almost 2KB), and helps to keep the code small with the LPDDR3 support added later. Signed-off-by: Andre Przywara <andre.przywara@arm.com> Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>
2023-07-21sunxi: H616: dram: const-ify DRAM function parametersAndre Przywara
There are quite some functions in the Allwinner H616 DRAM "driver", some of them actually change the parameters in the structure passed to them, but many are actually not. To increase the optimisation potential for the code, mark those functions that just read members of the passed dram_para struct as "const". This in itself does not decrease the code size, but lays the groundwork for future changes doing so. Signed-off-by: Andre Przywara <andre.przywara@arm.com> Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>
2023-07-20arm: mx5: Correct mxc_set_clock function prototypeTom Rini
With gcc-13.1 we get a warning about enum vs int here, so correct the declaration to match the implementation. Signed-off-by: Tom Rini <trini@konsulko.com>
2023-07-14arch: arm: npcm8xx: add cpu version and 4G ram supportJim Liu
Add npcm8xx A2 cpu version check and add 4G RAM support Signed-off-by: Jim Liu <JJLIU0@nuvoton.com>
2023-07-13imx: imx8m: add CAAM_BASE_ADDRPeng Fan
Add CAAM_BASE_ADDR which will be used by priblob.c Signed-off-by: Peng Fan <peng.fan@nxp.com>
2023-07-13imx: ahab: Update AHAB for iMX8 and iMX8ULPYe Li
Abstract common interfaces for AHAB authentication operations. Then share some common codes for AHAB and SPL container authentication Signed-off-by: Ye Li <ye.li@nxp.com> Signed-off-by: Peng Fan <peng.fan@nxp.com>
2023-07-13imx: imx8: bootaux: Add i.MX8 M4 boot supportYe Li
1. Implement bootaux for the M4 boot on i.MX8QM and QXP. Users need to download M4 image to any DDR address first. Then use the "bootaux <M4 download DDR address> [M4 core id]" to boot CM4_0 or CM4_1, the default core id is 0 for CM4_0. Since current M4 only supports running in TCM. The bootaux will copy the M4 image from DDR to its TCML. 2. Implment bootaux for HIFI on QXP command: bootaux 0x81000000 1 Signed-off-by: Ye Li <ye.li@nxp.com> Signed-off-by: Peng Fan <peng.fan@nxp.com>
2023-07-13imx: bootaux: change names of MACROs used to boot MCU on iMX devicesPeng Fan
The current bootaux supports i.MX8M and i.MX93, but the name "_M4_" implies that the SoCs have Cortex-M4. Actually i.MX8MM/Q use Cortex-M4, i.MX8MN/P use Cortex-M7, i.MX93 use Cortex-M33, so use "_MCU_" in place of "_M4_" to simplify the naming. Signed-off-by: faqiang.zhu <faqiang.zhu@nxp.com> Signed-off-by: Peng Fan <peng.fan@nxp.com>
2023-07-13imx: imx8ulp: start the ELE RNG at bootPeng Fan
On the imx8ulp A1 SoC, the ELE RNG needs to be manually started. Signed-off-by: Clement Faure <clement.faure@nxp.com> Signed-off-by: Peng Fan <peng.fan@nxp.com>
2023-07-13imx: ele_api: add DEK Blob generationPeng Fan
- Add crc computation. - Add ele_generate_dek_blob API for encrypted boot support. Signed-off-by: Clement Faure <clement.faure@nxp.com> Signed-off-by: Peng Fan <peng.fan@nxp.com>
2023-07-13imx: ele_api: support program secure fuse and return lifecyclePeng Fan
Add two ELE API: ele_return_lifecycle_update and ele_write_secure_fuse Add two cmd: ahab_return_lifecycle and ahab_sec_fuse_prog Signed-off-by: Peng Fan <peng.fan@nxp.com>
2023-07-13imx: use generic name ele(EdgeLockSecure Enclave)Peng Fan
Per NXP requirement, we rename all the NXP EdgeLock Secure Enclave code including comment, folder and API name to ELE to align. Signed-off-by: Peng Fan <peng.fan@nxp.com>
2023-07-05Merge tag 'v2023.07-rc6' into nextTom Rini
Prepare v2023.07-rc6
2023-07-01ARM: arm11: Add C wrapper for allow_unaligned()Marek Vasut
Rename current assembler implementation of allow_unaligned() to arm11_arch_cp15_allow_unaligned() and add it into arm11.h header, then add C wrapper of allow_unaligned(). This fixes misbehavior when linking U-Boot, where the CPU specific allow_unaligned() implementation was ignored and instead the __weak allow_unaligned() implementation from lib/efi_loader/efi_setup.c was used, which led to "data abort" just before booting Linux via tftp, in efi_dp_from_file() -> path_to_uefi() -> utf16_put() . The problem is triggerd by c7c0ca37673 ("efi_loader: fix efi_dp_from_file()") . Adding the wrapper fixes the problem. Fixes: d47a774680d ("arm: arm11: allow unaligned memory access") Signed-off-by: Marek Vasut <marex@denx.de>
2023-07-01ARM: armv7: Add C wrapper for allow_unaligned()Marek Vasut
Rename current assembler implementation of allow_unaligned() to v7_arch_cp15_allow_unaligned() and add it into armv7.h header, then add C wrapper of allow_unaligned(). This fixes misbehavior when linking U-Boot on ARMv7a i.MX6Q, where the CPU specific allow_unaligned() implementation was ignored and instead the __weak allow_unaligned() implementation from lib/efi_loader/efi_setup.c was used, which led to "data abort" just before booting Linux via tftp, in efi_dp_from_file() -> path_to_uefi() -> utf16_put() . The problem is triggerd by c7c0ca37673 ("efi_loader: fix efi_dp_from_file()") . Adding the wrapper fixes the problem. Fixes: 78f90aaeecc ("arm: armv7: allow unaligned memory access") Signed-off-by: Marek Vasut <marex@denx.de>
2023-06-30ARM: tegra: add SoC UID calculation functionSvyatoslav Ryhel
This is a small tool for calculation of SoC UID based on the same Linux function. It can be further used for generation of device unique data like mac address or exposing it as serial number. Tested-by: Andreas Westman Dorcsak <hedmoo@yahoo.com> # ASUS Grouper E1565 Tested-by: Svyatoslav Ryhel <clamor95@gmail.com> # LG P895 T30 Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2023-06-28arch/arm: meson: sm: introduce power domain functionsAlexey Romanov
This commit adds functions to manage secure power domain for Amlogic SoC's using smc functionality. Signed-off-by: Alexey Romanov <avromanov@sberdevices.ru> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://lore.kernel.org/r/20230531093156.29240-2-avromanov@sberdevices.ru Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
2023-06-28ARM: meson: add A1 supportIgor Prusov
Add support for Amlogic A1 SoC family. Signed-off-by: Igor Prusov <ivprusov@sberdevices.ru> Signed-off-by: Evgeny Bachinin <eabachinin@sberdevices.ru> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://lore.kernel.org/r/20230505125639.3605-4-ivprusov@sberdevices.ru Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
2023-06-12Merge tag 'xilinx-for-v2023.10-rc1' of ↵Tom Rini
https://source.denx.de/u-boot/custodians/u-boot-microblaze into next Xilinx changes for v2023.10-rc1 global: - Use proper U-Boot project name Fix sparse warnings in zynqmp-clk, zynqmp handoff, board cmd: - Cover incorrect 0 length entries Versal NET: - Add bootmode logic - Support SPP production version - Add loadpdi command ZynqMP: - Clear pmufw node command ID handling - Change power domain behavior around zynqmp_pmufw_node() - Fix zynqmp cmd return values and pmufw command - Fix R5 tcm init and modes mmc: - Sync Versal NET emmc DT binding pcie: - Add support for ZynqMP PCIe root port video: - Add support for ZynqMP DP tools: - Fix debug message in relocate-rela
2023-06-12Merge tag v2023.07-rc4 into nextTom Rini
Signed-off-by: Tom Rini <trini@konsulko.com>
2023-06-12global: Use proper project name U-BootMichal Simek
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
2023-06-07sunxi: Fix typo in include guardSam Edwards
Signed-off-by: Sam Edwards <CFSworks@gmail.com> Reviewed-by: Andre Przywara <andre.przywara@arm.com>
2023-06-01arm64: Remove duplicated symbolsLeo Yan
When build U-boot with clang with using commands: $ make HOSTCC=clang xenguest_arm64_defconfig $ make HOSTCC=clang CROSS_COMPILE=aarch64-linux-gnu- \ CC="clang -target aarch64-linux-gnueabi" -j8 The compiler reports error: /tmp/start-acdf31.s:330:1: error: symbol '_start' is already defined _start: ^ Because the symbol '_start' has been defined twice, one is defined in arch/arm/cpu/armv8/start.S, another is defined in the header boot0-linux-kernel-header.h. To fix building failure, this patch removes the symbol '_start' from boot0-linux-kernel-header.h. Signed-off-by: Leo Yan <leo.yan@linaro.org>
2023-05-31arm: set alignment properly for asm funcsSam Edwards
ARM requires a 4-byte alignment on all ARM code (though this requirement is relaxed to 2-byte for some THUMB code) and we should be explicit about that here. GAS has its own fix for this[1] that forces proper alignment on any section containing assembled instructions, but this is not universal: Clang's and other gaslike assemblers lack this implicit alignment. Whether or not this is considered a bug in those assemblers, it is better to ask directly for what we want. [1]: https://sourceware.org/bugzilla/show_bug.cgi?id=12931 Signed-off-by: Sam Edwards <CFSworks@gmail.com>
2023-05-31arm: use asm-generic/unaligned.hJens Wiklander
Arm duplicates the content of asm-generic/unaligned.h, so use that file directly instead. Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org> Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>