openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity
linux/arch/arm64/include/uapi/asm/hwcap.h

40 lines
1.2 KiB
C
Raw Normal View History

arm64: Kernel booting and initialisation The patch adds the kernel booting and the initial setup code. Documentation/arm64/booting.txt describes the booting protocol on the AArch64 Linux kernel. This is subject to change following the work on boot standardisation, ACPI. Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Nicolas Pitre <nico@linaro.org> Acked-by: Tony Lindgren <tony@atomide.com> Acked-by: Olof Johansson <olof@lixom.net> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Acked-by: Arnd Bergmann <arnd@arndb.de>
2012-03-05 19:49:27 +08:00
/*
* Copyright (C) 2012 ARM Ltd.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
UAPI: (Scripted) Disintegrate arch/arm64/include/asm Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Michael Kerrisk <mtk.manpages@gmail.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Dave Jones <davej@redhat.com>
2012-10-11 18:05:13 +08:00
#ifndef _UAPI__ASM_HWCAP_H
#define _UAPI__ASM_HWCAP_H
arm64: Kernel booting and initialisation The patch adds the kernel booting and the initial setup code. Documentation/arm64/booting.txt describes the booting protocol on the AArch64 Linux kernel. This is subject to change following the work on boot standardisation, ACPI. Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Nicolas Pitre <nico@linaro.org> Acked-by: Tony Lindgren <tony@atomide.com> Acked-by: Olof Johansson <olof@lixom.net> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Acked-by: Arnd Bergmann <arnd@arndb.de>
2012-03-05 19:49:27 +08:00
UAPI: (Scripted) Disintegrate arch/arm64/include/asm Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Michael Kerrisk <mtk.manpages@gmail.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Dave Jones <davej@redhat.com>
2012-10-11 18:05:13 +08:00
/*
* HWCAP flags - for elf_hwcap (in kernel) and AT_HWCAP
*/
#define HWCAP_FP (1 << 0)
#define HWCAP_ASIMD (1 << 1)
ARM64: arch_timer: add support to configure and enable event stream This patch adds support for configuring the event stream frequency and enabling it. It also adds the hwcaps as well as compat-specific definitions to the user to detect this event stream feature. Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: Will Deacon <will.deacon@arm.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Olof Johansson <olof@lixom.net> Signed-off-by: Sudeep KarkadaNagesha <sudeep.karkadanagesha@arm.com>
2013-08-13 22:57:53 +08:00
#define HWCAP_EVTSTRM (1 << 2)
arm64: Add hwcaps for crypto and CRC32 extensions. 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>
2013-12-17 05:04:36 +08:00
#define HWCAP_AES (1 << 3)
#define HWCAP_PMULL (1 << 4)
#define HWCAP_SHA1 (1 << 5)
#define HWCAP_SHA2 (1 << 6)
#define HWCAP_CRC32 (1 << 7)
arm64: elf: advertise 8.1 atomic instructions as new hwcap The ARM v8.1 architecture introduces new atomic instructions to the A64 instruction set for things like cmpxchg, so advertise their availability to userspace using a hwcap. Reviewed-by: Steve Capper <steve.capper@arm.com> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2015-01-27 02:46:19 +08:00
#define HWCAP_ATOMICS (1 << 8)
arm64: Add support for Half precision floating point ARMv8.2 extensions [1] include an optional feature, which supports half precision(16bit) floating point/asimd data processing instructions. This patch adds support for detecting and exposing the same to the userspace via HWCAPs [1] https://community.arm.com/groups/processors/blog/2016/01/05/armv8-a-architecture-evolution Signed-off-by: Suzuki K. Poulose <suzuki.poulose@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2016-01-26 23:52:46 +08:00
#define HWCAP_FPHP (1 << 9)
#define HWCAP_ASIMDHP (1 << 10)
arm64: cpufeature: Expose CPUID registers by emulation This patch adds the hook for emulating MRS instruction to export the 'user visible' value of supported system registers. We emulate only the following id space for system registers: Op0=3, Op1=0, CRn=0, CRm=[0, 4-7] The rest will fall back to SIGILL. This capability is also advertised via a new HWCAP_CPUID. Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Will Deacon <will.deacon@arm.com> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> [will: add missing static keyword to enable_mrs_emulation] Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-01-10 01:28:31 +08:00
#define HWCAP_CPUID (1 << 11)
arm64: Advertise support for Rounding double multiply instructions ARM v8.1 extensions include support for rounding double multiply add/subtract instructions to the A64 SIMD instructions set. Let the userspace know about it via a HWCAP bit. Cc: Mark Rutland <mark.rutland@arm.com> Cc: Will Deacon <will.deacon@arm.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
2017-01-13 00:37:28 +08:00
#define HWCAP_ASIMDRDM (1 << 12)
arm64: v8.3: Support for Javascript conversion instruction ARMv8.3 adds support for a new instruction to perform conversion from double precision floating point to integer to match the architected behaviour of the equivalent Javascript conversion. Expose the availability via HWCAP and MRS emulation. Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-03-15 02:13:25 +08:00
#define HWCAP_JSCVT (1 << 13)
arm64: v8.3: Support for complex number instructions ARM v8.3 adds support for new instructions to aid floating-point multiplication and addition of complex numbers. Expose the support via HWCAP and MRS emulation Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-03-15 02:13:26 +08:00
#define HWCAP_FCMA (1 << 14)
arm64: v8.3: Support for weaker release consistency ARMv8.3 adds new instructions to support Release Consistent processor consistent (RCpc) model, which is weaker than the RCsc model. Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-03-15 02:13:27 +08:00
#define HWCAP_LRCPC (1 << 15)
arm64: Kernel booting and initialisation The patch adds the kernel booting and the initial setup code. Documentation/arm64/booting.txt describes the booting protocol on the AArch64 Linux kernel. This is subject to change following the work on boot standardisation, ACPI. Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Nicolas Pitre <nico@linaro.org> Acked-by: Tony Lindgren <tony@atomide.com> Acked-by: Olof Johansson <olof@lixom.net> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Acked-by: Arnd Bergmann <arnd@arndb.de>
2012-03-05 19:49:27 +08:00
UAPI: (Scripted) Disintegrate arch/arm64/include/asm Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Michael Kerrisk <mtk.manpages@gmail.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Dave Jones <davej@redhat.com>
2012-10-11 18:05:13 +08:00
#endif /* _UAPI__ASM_HWCAP_H */