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2014-05-21arm64: remove return value form psci_init()Vladimir Murzin
psci_init() is written to return err code if something goes wrong. However, the single user, setup_arch(), doesn't care about it. Moreover, every error path is supplied with a clear message which is enough for pleasant debugging. Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com> Acked-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> (cherry picked from commit 64b4f60f497058f1c6ba118a0260249ee5c091a6) Signed-off-by: Mark Brown <broonie@linaro.org>
2014-05-21arm64: remove redundant "psci:" prefixesVladimir Murzin
Since 652af899799354049b273af897b798b8f03fdd88 "arm64: factor out spin-table boot method" psci prefix's been introduced. We have a common pr_fmt, so clean them up. Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com> Acked-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> (cherry picked from commit 288ac26cc2334e5e6ecad6416e9bf750691afd84) Signed-off-by: Mark Brown <broonie@linaro.org>
2014-05-21arm64: vdso: clean up vdso_pagelist initializationNathan Lynch
Remove some unnecessary bits that were apparently carried over from another architecture's implementation: - No need to get_page() the vdso text/data - these are part of the kernel image. - No need for ClearPageReserved on the vdso text. - No need to vmap the first text page to check the ELF header - this can be done through &vdso_start. Also some minor cleanup: - Use kcalloc for vdso_pagelist array allocation. - Don't print on allocation failure, slab/slub will do that for us. Signed-off-by: Nathan Lynch <nathan_lynch@mentor.com> Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> (cherry picked from commit 16fb1a9bec6126162560f159df449e4781560807) Signed-off-by: Mark Brown <broonie@linaro.org>
2014-05-21arm64: Change misleading function names in dma-mappingRitesh Harjani
arm64_swiotlb_alloc/free_coherent name can be misleading somtimes with CMA support being enabled after this patch (c2104debc235b745265b64d610237a6833fd53) Change this name to be more generic: __dma_alloc/free_coherent Signed-off-by: Ritesh Harjani <ritesh.harjani@gmail.com> [catalin.marinas@arm.com: renamed arm64_swiotlb_dma_ops to coherent_swiotlb_dma_ops] Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> (cherry picked from commit bb10eb7b4d176f408d45fb492df28bed2981a1f3) Signed-off-by: Mark Brown <broonie@linaro.org>
2014-05-21arm64: Fix the soft_restart routineGeoff Levand
Change the soft_restart() routine to call cpu_reset() at its identity mapped physical address. The cpu_reset() routine must be called at its identity mapped physical address so that when the MMU is turned off the instruction pointer will be at the correct location in physical memory. Signed-off-by: Geoff Levand <geoff@infradead.org> for Huawei, Linaro Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> (cherry picked from commit 09024aa61e1bc994404683e2e5b363484a15dd12) Signed-off-by: Mark Brown <broonie@linaro.org>
2014-05-21arm64: Extend the idmap to the whole kernel imageCatalin Marinas
This patch changes the idmap page table creation during boot to cover the whole kernel image, allowing functions like cpu_reset() to be safely called with the physical address. This patch also simplifies the create_block_map asm macro to no longer take an idmap argument and always use the phys/virt/end parameters. For the idmap case, phys == virt. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> (cherry picked from commit ea8c2e1124457f266f82effc3e6558552527943a) Signed-off-by: Mark Brown <broonie@linaro.org>
2014-05-21arm64: enable processor debug state for secondary cpusVijaya Kumar K
processor debug state PSTATE.D is unmasked in smp call clear_os_lock for secondary cpus. So debug state is still masked in normal kernel context. With this patch, unmask debug state on secondary boot for the cpus in normal kernel context. Now kgdb tests passed with multicore. Signed-off-by: Vijaya Kumar K <Vijaya.Kumar@caviumnetworks.com> Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> (cherry picked from commit d8ed442a009ecfe155b57d58f231db3d6084633d) Signed-off-by: Mark Brown <broonie@linaro.org> Conflicts: arch/arm64/kernel/smp.c
2014-05-21Merge remote-tracking branch 'lsk/v3.10/topic/arm64-kgdb' into ↵Mark Brown
lsk-v3.10-arm64-misc Conflicts: arch/arm64/include/asm/debug-monitors.h arch/arm64/kernel/debug-monitors.c
2014-05-21arm64: Extend the PCI I/O space to 16MBCatalin Marinas
The patch moves the PCI I/O space (currently at 64K) before the earlyprintk mapping and extends it to 16MB. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> (cherry picked from commit 22bd1c91fe13d59cff734b69b6757adcfbd8dee9) Signed-off-by: Mark Brown <broonie@linaro.org> Conflicts: Documentation/arm64/memory.txt
2014-05-21Merge branch 'linux-linaro-lsk' into linux-linaro-lsk-rtMark Brown
2014-05-21Merge remote-tracking branch 'lsk/v3.10/topic/arm64-be' into linux-linaro-lskMark Brown
2014-05-21word-at-a-time: simplify big-endian zero_bytemask macroH. Peter Anvin
This is simpler and cleaner. Depending on architecture, a smart compiler may or may not generate the same code. Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> (cherry picked from commit 789ce9dca8007ab5d7c72b9a174a29243817ac32) Signed-off-by: Mark Brown <broonie@linaro.org>
2014-05-21word-at-a-time: avoid undefined behaviour in zero_bytemask macroWill Deacon
The asm-generic, big-endian version of zero_bytemask creates a mask of bytes preceding the first zero-byte by left shifting ~0ul based on the position of the first zero byte. Unfortunately, if the first (top) byte is zero, the output of prep_zero_mask has only the top bit set, resulting in undefined C behaviour as we shift left by an amount equal to the width of the type. As it happens, GCC doesn't manage to spot this through the call to fls(), but the issue remains if architectures choose to implement their shift instructions differently. An example would be arch/arm/ (AArch32), where LSL Rd, Rn, #32 results in Rd == 0x0, whilst on arch/arm64 (AArch64) LSL Xd, Xn, #64 results in Xd == Xn. Rather than check explicitly for the problematic shift, this patch adds an extra shift by 1, replacing fls with __fls. Since zero_bytemask is never called with a zero argument (has_zero() is used to check the data first), we don't need to worry about calling __fls(0), which is undefined. Cc: <stable@vger.kernel.org> Cc: Victor Kamensky <victor.kamensky@linaro.org> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> (cherry picked from commit ec6931b281797b69e6cf109f9cc94d5a2bf994e0) Signed-off-by: Mark Brown <broonie@linaro.org>
2014-05-21word-at-a-time: provide generic big-endian zero_bytemask implementationWill Deacon
Whilst architectures may be able to do better than this (which they can, by simply defining their own macro), this is a generic stab at a zero_bytemask implementation for the asm-generic, big-endian word-at-a-time implementation. On arm64, a clz instruction is used to implement the fls efficiently. Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> (cherry picked from commit 11ec50caedb56e3a87715edeff6a1852e6ae5416) Signed-off-by: Mark Brown <broonie@linaro.org>
2014-05-21Merge remote-tracking branch 'lsk/v3.10/topic/arm64-misc' into linux-linaro-lskMark Brown
2014-05-21arm64, jump label: detect %c support for ARM64Jiang Liu
As commit a9468f30b5eac6 "ARM: 7333/2: jump label: detect %c support for ARM", this patch detects the same thing for ARM64 because some ARM64 GCC versions have the same issue. Some versions of ARM64 GCC which do support asm goto, do not support the %c specifier. Since we need the %c to support jump labels on ARM64, detect that too in the asm goto detection script to avoid build errors with these versions. Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Jiang Liu <liuj97@gmail.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> (cherry picked from commit f3c003f72dfb2497056bcbb864885837a1968ed5) Signed-off-by: Mark Brown <broonie@linaro.org>
2014-05-21Merge remote-tracking branch 'lsk/v3.10/topic/arm64-kgdb' into linux-linaro-lskMark Brown
Conflicts: arch/arm64/Kconfig arch/arm64/include/asm/debug-monitors.h arch/arm64/kernel/Makefile arch/arm64/kernel/debug-monitors.c
2014-05-21arm64: KGDB: Add KGDB configVijaya Kumar K
Add HAVE_ARCH_KGDB for arm64 Kconfig Signed-off-by: Vijaya Kumar K <Vijaya.Kumar@caviumnetworks.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> (cherry picked from commit 9529247db9ecfc5a723e17093614e7437ab0d5bd) Signed-off-by: Mark Brown <broonie@linaro.org> Conflicts: arch/arm64/Kconfig
2014-05-21misc: debug: remove compilation warningsVijaya Kumar K
typecast instruction_pointer macro to unsigned long to resolve following compiler warnings like warning: format '%lx' expects argument of type 'long unsigned int', but argument 2 has type 'u64' [-Wformat] Signed-off-by: Vijaya Kumar K <Vijaya.Kumar@caviumnetworks.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> (cherry picked from commit 58dcc204f18af2821f683b235bb376f9db2557f5) Signed-off-by: Mark Brown <broonie@linaro.org>
2014-05-21arm64: KGDB: Add step debugging supportVijaya Kumar K
Add KGDB software step debugging support for EL1 debug in AArch64 mode. KGDB registers step debug handler with debug monitor. On receiving 'step' command from GDB tool, target enables software step debugging and step address is updated in ELR. Software Step debugging is disabled when 'continue' command is received Signed-off-by: Vijaya Kumar K <Vijaya.Kumar@caviumnetworks.com> Reviewed-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> (cherry picked from commit 44679a4f142b69ae0c68ed815a48bbd164827281) Signed-off-by: Mark Brown <broonie@linaro.org>
2014-05-21arm64: KGDB: Add Basic KGDB supportVijaya Kumar K
Add KGDB debug support for kernel debugging. With this patch, basic KGDB debugging is possible.GDB register layout is updated and GDB tool can establish connection with target and can set/clear breakpoints. Signed-off-by: Vijaya Kumar K <Vijaya.Kumar@caviumnetworks.com> Reviewed-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> (cherry picked from commit bcf5763b0d58d20e288ac52f96cbd7788e262cac) Signed-off-by: Mark Brown <broonie@linaro.org> Conflicts: arch/arm64/kernel/Makefile
2014-05-21arm64: Add macros to manage processor debug stateVijaya Kumar K
Add macros to enable and disable to manage PSTATE.D for debugging. The macros local_dbg_save and local_dbg_restore are moved to irqflags.h file KGDB boot tests fail because of PSTATE.D is masked. unmask it for debugging support Signed-off-by: Vijaya Kumar K <Vijaya.Kumar@caviumnetworks.com> Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> (cherry picked from commit c7db4ff5d2b459a579d348532a92fd5885520ce6) Signed-off-by: Mark Brown <broonie@linaro.org>
2014-05-21arm64: defconfig: Expand default enabled featuresMark Rutland
FPGA implementations of the Cortex-A57 and Cortex-A53 are now available in the form of the SMM-A57 and SMM-A53 Soft Macrocell Models (SMMs) for Versatile Express. As these attach to a Motherboard Express V2M-P1 it would be useful to have support for some V2M-P1 peripherals enabled by default. Additionally a couple of of features have been introduced since the last defconfig update (CMA, jump labels) that would be good to have enabled by default to ensure they are build and boot tested. This patch updates the arm64 defconfig to enable support for these devices and features. The arm64 Kconfig is modified to select HAVE_PATA_PLATFORM, which is required to enable support for the CompactFlash controller on the V2M-P1. A few options which don't need to appear in defconfig are trimmed: * BLK_DEV - selected by default * EXPERIMENTAL - otherwise gone from the kernel * MII - selected by drivers which require it * USB_SUPPORT - selected by default Signed-off-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> (cherry picked from commit 55834a773fe343912b705bef8114ec93fd337188) Signed-off-by: Mark Brown <broonie@linaro.org> Conflicts: arch/arm64/configs/defconfig
2014-05-21arm64: asm: remove redundant "cc" clobbersWill Deacon
cbnz/tbnz don't update the condition flags, so remove the "cc" clobbers from inline asm blocks that only use these instructions to implement conditional branches. Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> (cherry picked from commit 95c4189689f92fba7ecf9097173404d4928c6e9b) Signed-off-by: Mark Brown <broonie@linaro.org>
2014-05-21arm64: barriers: allow dsb macro to take option parameterWill Deacon
The dsb instruction takes an option specifying both the target access types and shareability domain. This patch allows such an option to be passed to the dsb macro, resulting in potentially more efficient code. Currently the option is ignored until all callers are updated (unlike ARM, the option is mandated by the assembler). Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> (cherry picked from commit 4a7ac12eedd190cdf071e61145defa73df1675c0) Signed-off-by: Mark Brown <broonie@linaro.org>
2014-05-21arm64: simplify pgd_allocMark Rutland
Currently pgd_alloc has a redundant NULL check in its return path that can be removed with no ill effects. With that removed it's also possible to return early and eliminate the new_pgd temporary variable. This patch applies said modifications, making the logic of pgd_alloc correspond 1-1 with that of pgd_free. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> (cherry picked from commit 883d50a0ed403446437444a495356ce31e1197a3) Signed-off-by: Mark Brown <broonie@linaro.org>
2014-05-21arm64: fix typo: s/SERRROR/SERROR/Mark Rutland
Somehow SERROR has acquired an additional 'R' in a couple of headers. This patch removes them before they spread further. As neither instance is in use yet, no other sites need to be fixed up. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> (cherry picked from commit bfb67a5606376bb32cb6f93dc05cda2e8c2038a5) Signed-off-by: Mark Brown <broonie@linaro.org> Conflicts: arch/arm64/include/asm/kvm_arm.h
2014-05-20Merge remote-tracking branch 'lsk/v3.10/topic/arm64-misc' into linux-linaro-lskMark Brown
2014-05-20arm64: mm: fix the function name in comment of cpu_do_switch_mmJingoo Han
Fix the function name of comment of cpu_do_switch_mm, because cpu_do_switch_mm is the correct name. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> (cherry picked from commit 812944e91dbbfeadaeeb4443a5560a7f45648f0b) Signed-off-by: Mark Brown <broonie@linaro.org>
2014-05-20arm64: mm: fix the function name in comment of __flush_dcache_areaJingoo Han
Fix the function name of comment of __flush_dcache_area, because __flush_dcache_area is the correct name. Also, the missing variable 'size' is added to the comment. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> (cherry picked from commit 03324e6e6e66ebd171d9b4b90fd6a2655980dc13) Signed-off-by: Mark Brown <broonie@linaro.org>
2014-05-20arm64: mm: use ubfm for dcache_line_sizeJingoo Han
Use 'ubfm' for the bitfield move instruction; thus, single instruction can be used instead of two instructions, when getting the minimum D-cache line size from CTR_EL0 register. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> (cherry picked from commit bd5f6dc304a054ccdc8dab43bef5e41d9a575b61) Signed-off-by: Mark Brown <broonie@linaro.org>
2014-05-20Merge remote-tracking branch 'lsk/v3.10/topic/arm64-insn' into linux-linaro-lskMark Brown
Conflicts: arch/arm64/kernel/Makefile arch/arm64/kernel/module.c
2014-05-20arm64, jump label: optimize jump label implementationJiang Liu
Optimize jump label implementation for ARM64 by dynamically patching kernel text. Reviewed-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Jiang Liu <liuj97@gmail.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> (cherry picked from commit 9732cafd9dc0206479be919baf0067239f0a63ca) Signed-off-by: Mark Brown <broonie@linaro.org> Conflicts: arch/arm64/kernel/Makefile
2014-05-20arm64: introduce aarch64_insn_gen_{nop|branch_imm}() helper functionsJiang Liu
Introduce aarch64_insn_gen_{nop|branch_imm}() helper functions, which will be used to implement jump label on ARM64. Reviewed-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Jiang Liu <liuj97@gmail.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> (cherry picked from commit 5c5bf25d4f7a950382f94fc120a5818197b48fe9) Signed-off-by: Mark Brown <broonie@linaro.org>
2014-05-20arm64: move encode_insn_immediate() from module.c to insn.cJiang Liu
Function encode_insn_immediate() will be used by other instruction manipulate related functions, so move it into insn.c and rename it as aarch64_insn_encode_immediate(). Reviewed-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Jiang Liu <liuj97@gmail.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> (cherry picked from commit c84fced8d990dd86c523233d38b4685a52a4fc3f) Signed-off-by: Mark Brown <broonie@linaro.org>
2014-05-20arm64: module: ensure instruction is little-endian before manipulationWill Deacon
Relocations that require an instruction immediate to be re-encoded must ensure that the instruction pattern is represented in a little-endian format for the manipulation code to work correctly. This patch converts the loaded instruction into native-endianess prior to encoding and then converts back to little-endian byteorder before updating memory. Signed-off-by: Will Deacon <will.deacon@arm.com> Tested-by: Matthew Leach <matthew.leach@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> (cherry picked from commit 122e2fa0d310d262cb85cf0b003032e5d2bc2ae7) Signed-off-by: Victor Kamensky <victor.kamensky@linaro.org> (cherry picked from commit 36bada1e73f23f948283f97caf775f3428e56af8) Signed-off-by: Mark Brown <broonie@linaro.org>
2014-05-20arm64: introduce interfaces to hotpatch kernel and module codeJiang Liu
Introduce three interfaces to patch kernel and module code: aarch64_insn_patch_text_nosync(): patch code without synchronization, it's caller's responsibility to synchronize all CPUs if needed. aarch64_insn_patch_text_sync(): patch code and always synchronize with stop_machine() aarch64_insn_patch_text(): patch code and synchronize with stop_machine() if needed Reviewed-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Jiang Liu <liuj97@gmail.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> (cherry picked from commit ae16480785de1da84f21d1698f304a52f9790c49) Signed-off-by: Mark Brown <broonie@linaro.org>
2014-05-20arm64: introduce basic aarch64 instruction decoding helpersJiang Liu
Introduce basic aarch64 instruction decoding helper aarch64_get_insn_class() and aarch64_insn_hotpatch_safe(). Reviewed-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Jiang Liu <liuj97@gmail.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> (cherry picked from commit b11a64a48ccc7ca0ceb33544206934fbd3cdbb22) Signed-off-by: Mark Brown <broonie@linaro.org> Conflicts: arch/arm64/kernel/Makefile
2014-05-20Merge tag 'v3.10.39-rt40' into linux-linaro-lsk-rtAnders Roxell
Linux 3.10.39-rt40
2014-05-20Merge branch 'linux-linaro-lsk' into linux-linaro-lsk-rtMark Brown
2014-05-20arm64: arch_timer: Fix mismergeMark Brown
Signed-off-by: Mark Brown <broonie@linaro.org>
2014-05-20Merge branch 'linux-linaro-lsk' into linux-linaro-lsk-rtMark Brown
2014-05-20Merge remote-tracking branch 'lsk/v3.10/topic/arm64-misc' into linux-linaro-lskMark Brown
2014-05-20arm64: Remove unused __data_loc variableGeoff Levand
The __data_loc variable is an unused left over from the 32 bit arm implementation. Remove that variable and adjust the __mmap_switched startup routine accordingly. Signed-off-by: Geoff Levand <geoff@infradead.org> for Huawei, Linaro Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> (cherry picked from commit b22cf637bbaf99d4caf9908997a32f91cdcfae52) Signed-off-by: Mark Brown <broonie@linaro.org>
2014-05-20Merge remote-tracking branch 'lsk/v3.10/topic/arm64-ptrace' into ↵Mark Brown
linux-linaro-lsk
2014-05-20Merge remote-tracking branch 'lsk/v3.10/topic/arm64-crypto' into ↵Mark Brown
linux-linaro-lsk Conflicts: arch/arm64/include/asm/arch_timer.h arch/arm64/include/asm/hwcap.h arch/arm64/include/uapi/asm/hwcap.h arch/arm64/kernel/setup.c
2014-05-20arm64: advertise ARMv8 extensions to 32-bit compat ELF binariesArd Biesheuvel
This adds support for advertising the presence of ARMv8 Crypto Extensions in the Aarch32 execution state to 32-bit ELF binaries running in 32-bit compat mode under the arm64 kernel. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> (cherry picked from commit 4cf761cdccc3b050f768f25dc36342cdfec4efdd) Signed-off-by: Mark Brown <broonie@linaro.org>
2014-05-20arm64: add AT_HWCAP2 support for 32-bit compatArd Biesheuvel
Add support for the ELF auxv entry AT_HWCAP2 when running 32-bit ELF binaries in compat mode. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> (cherry picked from commit 28964d32d495a0753986d464c48c8e1ae73699be) Signed-off-by: Mark Brown <broonie@linaro.org>
2014-05-19arm64: Add hwcaps for crypto and CRC32 extensions.Steve Capper
Advertise the optional cryptographic and CRC32 instructions to user space where present. Several hwcap bits [3-7] are allocated. Signed-off-by: Steve Capper <steve.capper@linaro.org> [bit 2 is taken now so use bits 3-7 instead] Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> (cherry picked from commit 4bff28ccda2b7a3fbdf8e80aef7a599284681dc6) Signed-off-by: Mark Brown <broonie@linaro.org>
2014-05-19arm64: drop redundant macros from read_cpuid()Ard Biesheuvel
asm/cputype.h contains a bunch of #defines for CPU id registers that essentially map to themselves. Remove the #defines and pass the tokens directly to the inline asm() that reads the registers. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> (cherry picked from commit 148eb0a1db8e37a5966afe98223cefe0c1837c26) Signed-off-by: Mark Brown <broonie@linaro.org>
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-13 04:51:15 +0000