Currently for each hwcap we define both the HWCAPn_NAME definition which is exposed to userspace and a kernel internal KERNEL_HWCAP_NAME definition which we use internally. This is tedious and repetitive, instead use a script to generate the KERNEL_HWCAP_ definitions from the UAPI definitions.
No functional changes intended. Signed-off-by: Mark Brown <[email protected]> --- arch/arm64/include/asm/hwcap.h | 120 +--------------------------------- arch/arm64/tools/Makefile | 8 ++- arch/arm64/tools/gen-kernel-hwcaps.sh | 23 +++++++ 3 files changed, 32 insertions(+), 119 deletions(-) diff --git a/arch/arm64/include/asm/hwcap.h b/arch/arm64/include/asm/hwcap.h index 72ea4bda79f3..abe8218b2325 100644 --- a/arch/arm64/include/asm/hwcap.h +++ b/arch/arm64/include/asm/hwcap.h @@ -60,126 +60,10 @@ * of KERNEL_HWCAP_{feature}. */ #define __khwcap_feature(x) const_ilog2(HWCAP_ ## x) -#define KERNEL_HWCAP_FP __khwcap_feature(FP) -#define KERNEL_HWCAP_ASIMD __khwcap_feature(ASIMD) -#define KERNEL_HWCAP_EVTSTRM __khwcap_feature(EVTSTRM) -#define KERNEL_HWCAP_AES __khwcap_feature(AES) -#define KERNEL_HWCAP_PMULL __khwcap_feature(PMULL) -#define KERNEL_HWCAP_SHA1 __khwcap_feature(SHA1) -#define KERNEL_HWCAP_SHA2 __khwcap_feature(SHA2) -#define KERNEL_HWCAP_CRC32 __khwcap_feature(CRC32) -#define KERNEL_HWCAP_ATOMICS __khwcap_feature(ATOMICS) -#define KERNEL_HWCAP_FPHP __khwcap_feature(FPHP) -#define KERNEL_HWCAP_ASIMDHP __khwcap_feature(ASIMDHP) -#define KERNEL_HWCAP_CPUID __khwcap_feature(CPUID) -#define KERNEL_HWCAP_ASIMDRDM __khwcap_feature(ASIMDRDM) -#define KERNEL_HWCAP_JSCVT __khwcap_feature(JSCVT) -#define KERNEL_HWCAP_FCMA __khwcap_feature(FCMA) -#define KERNEL_HWCAP_LRCPC __khwcap_feature(LRCPC) -#define KERNEL_HWCAP_DCPOP __khwcap_feature(DCPOP) -#define KERNEL_HWCAP_SHA3 __khwcap_feature(SHA3) -#define KERNEL_HWCAP_SM3 __khwcap_feature(SM3) -#define KERNEL_HWCAP_SM4 __khwcap_feature(SM4) -#define KERNEL_HWCAP_ASIMDDP __khwcap_feature(ASIMDDP) -#define KERNEL_HWCAP_SHA512 __khwcap_feature(SHA512) -#define KERNEL_HWCAP_SVE __khwcap_feature(SVE) -#define KERNEL_HWCAP_ASIMDFHM __khwcap_feature(ASIMDFHM) -#define KERNEL_HWCAP_DIT __khwcap_feature(DIT) -#define KERNEL_HWCAP_USCAT __khwcap_feature(USCAT) -#define KERNEL_HWCAP_ILRCPC __khwcap_feature(ILRCPC) -#define KERNEL_HWCAP_FLAGM __khwcap_feature(FLAGM) -#define KERNEL_HWCAP_SSBS __khwcap_feature(SSBS) -#define KERNEL_HWCAP_SB __khwcap_feature(SB) -#define KERNEL_HWCAP_PACA __khwcap_feature(PACA) -#define KERNEL_HWCAP_PACG __khwcap_feature(PACG) -#define KERNEL_HWCAP_GCS __khwcap_feature(GCS) -#define KERNEL_HWCAP_CMPBR __khwcap_feature(CMPBR) -#define KERNEL_HWCAP_FPRCVT __khwcap_feature(FPRCVT) -#define KERNEL_HWCAP_F8MM8 __khwcap_feature(F8MM8) -#define KERNEL_HWCAP_F8MM4 __khwcap_feature(F8MM4) -#define KERNEL_HWCAP_SVE_F16MM __khwcap_feature(SVE_F16MM) -#define KERNEL_HWCAP_SVE_ELTPERM __khwcap_feature(SVE_ELTPERM) -#define KERNEL_HWCAP_SVE_AES2 __khwcap_feature(SVE_AES2) -#define KERNEL_HWCAP_SVE_BFSCALE __khwcap_feature(SVE_BFSCALE) -#define KERNEL_HWCAP_SVE2P2 __khwcap_feature(SVE2P2) -#define KERNEL_HWCAP_SME2P2 __khwcap_feature(SME2P2) -#define KERNEL_HWCAP_SME_SBITPERM __khwcap_feature(SME_SBITPERM) -#define KERNEL_HWCAP_SME_AES __khwcap_feature(SME_AES) -#define KERNEL_HWCAP_SME_SFEXPA __khwcap_feature(SME_SFEXPA) -#define KERNEL_HWCAP_SME_STMOP __khwcap_feature(SME_STMOP) -#define KERNEL_HWCAP_SME_SMOP4 __khwcap_feature(SME_SMOP4) - #define __khwcap2_feature(x) (const_ilog2(HWCAP2_ ## x) + 64) -#define KERNEL_HWCAP_DCPODP __khwcap2_feature(DCPODP) -#define KERNEL_HWCAP_SVE2 __khwcap2_feature(SVE2) -#define KERNEL_HWCAP_SVEAES __khwcap2_feature(SVEAES) -#define KERNEL_HWCAP_SVEPMULL __khwcap2_feature(SVEPMULL) -#define KERNEL_HWCAP_SVEBITPERM __khwcap2_feature(SVEBITPERM) -#define KERNEL_HWCAP_SVESHA3 __khwcap2_feature(SVESHA3) -#define KERNEL_HWCAP_SVESM4 __khwcap2_feature(SVESM4) -#define KERNEL_HWCAP_FLAGM2 __khwcap2_feature(FLAGM2) -#define KERNEL_HWCAP_FRINT __khwcap2_feature(FRINT) -#define KERNEL_HWCAP_SVEI8MM __khwcap2_feature(SVEI8MM) -#define KERNEL_HWCAP_SVEF32MM __khwcap2_feature(SVEF32MM) -#define KERNEL_HWCAP_SVEF64MM __khwcap2_feature(SVEF64MM) -#define KERNEL_HWCAP_SVEBF16 __khwcap2_feature(SVEBF16) -#define KERNEL_HWCAP_I8MM __khwcap2_feature(I8MM) -#define KERNEL_HWCAP_BF16 __khwcap2_feature(BF16) -#define KERNEL_HWCAP_DGH __khwcap2_feature(DGH) -#define KERNEL_HWCAP_RNG __khwcap2_feature(RNG) -#define KERNEL_HWCAP_BTI __khwcap2_feature(BTI) -#define KERNEL_HWCAP_MTE __khwcap2_feature(MTE) -#define KERNEL_HWCAP_ECV __khwcap2_feature(ECV) -#define KERNEL_HWCAP_AFP __khwcap2_feature(AFP) -#define KERNEL_HWCAP_RPRES __khwcap2_feature(RPRES) -#define KERNEL_HWCAP_MTE3 __khwcap2_feature(MTE3) -#define KERNEL_HWCAP_SME __khwcap2_feature(SME) -#define KERNEL_HWCAP_SME_I16I64 __khwcap2_feature(SME_I16I64) -#define KERNEL_HWCAP_SME_F64F64 __khwcap2_feature(SME_F64F64) -#define KERNEL_HWCAP_SME_I8I32 __khwcap2_feature(SME_I8I32) -#define KERNEL_HWCAP_SME_F16F32 __khwcap2_feature(SME_F16F32) -#define KERNEL_HWCAP_SME_B16F32 __khwcap2_feature(SME_B16F32) -#define KERNEL_HWCAP_SME_F32F32 __khwcap2_feature(SME_F32F32) -#define KERNEL_HWCAP_SME_FA64 __khwcap2_feature(SME_FA64) -#define KERNEL_HWCAP_WFXT __khwcap2_feature(WFXT) -#define KERNEL_HWCAP_EBF16 __khwcap2_feature(EBF16) -#define KERNEL_HWCAP_SVE_EBF16 __khwcap2_feature(SVE_EBF16) -#define KERNEL_HWCAP_CSSC __khwcap2_feature(CSSC) -#define KERNEL_HWCAP_RPRFM __khwcap2_feature(RPRFM) -#define KERNEL_HWCAP_SVE2P1 __khwcap2_feature(SVE2P1) -#define KERNEL_HWCAP_SME2 __khwcap2_feature(SME2) -#define KERNEL_HWCAP_SME2P1 __khwcap2_feature(SME2P1) -#define KERNEL_HWCAP_SME_I16I32 __khwcap2_feature(SME_I16I32) -#define KERNEL_HWCAP_SME_BI32I32 __khwcap2_feature(SME_BI32I32) -#define KERNEL_HWCAP_SME_B16B16 __khwcap2_feature(SME_B16B16) -#define KERNEL_HWCAP_SME_F16F16 __khwcap2_feature(SME_F16F16) -#define KERNEL_HWCAP_MOPS __khwcap2_feature(MOPS) -#define KERNEL_HWCAP_HBC __khwcap2_feature(HBC) -#define KERNEL_HWCAP_SVE_B16B16 __khwcap2_feature(SVE_B16B16) -#define KERNEL_HWCAP_LRCPC3 __khwcap2_feature(LRCPC3) -#define KERNEL_HWCAP_LSE128 __khwcap2_feature(LSE128) -#define KERNEL_HWCAP_FPMR __khwcap2_feature(FPMR) -#define KERNEL_HWCAP_LUT __khwcap2_feature(LUT) -#define KERNEL_HWCAP_FAMINMAX __khwcap2_feature(FAMINMAX) -#define KERNEL_HWCAP_F8CVT __khwcap2_feature(F8CVT) -#define KERNEL_HWCAP_F8FMA __khwcap2_feature(F8FMA) -#define KERNEL_HWCAP_F8DP4 __khwcap2_feature(F8DP4) -#define KERNEL_HWCAP_F8DP2 __khwcap2_feature(F8DP2) -#define KERNEL_HWCAP_F8E4M3 __khwcap2_feature(F8E4M3) -#define KERNEL_HWCAP_F8E5M2 __khwcap2_feature(F8E5M2) -#define KERNEL_HWCAP_SME_LUTV2 __khwcap2_feature(SME_LUTV2) -#define KERNEL_HWCAP_SME_F8F16 __khwcap2_feature(SME_F8F16) -#define KERNEL_HWCAP_SME_F8F32 __khwcap2_feature(SME_F8F32) -#define KERNEL_HWCAP_SME_SF8FMA __khwcap2_feature(SME_SF8FMA) -#define KERNEL_HWCAP_SME_SF8DP4 __khwcap2_feature(SME_SF8DP4) -#define KERNEL_HWCAP_SME_SF8DP2 __khwcap2_feature(SME_SF8DP2) -#define KERNEL_HWCAP_POE __khwcap2_feature(POE) - #define __khwcap3_feature(x) (const_ilog2(HWCAP3_ ## x) + 128) -#define KERNEL_HWCAP_MTE_FAR __khwcap3_feature(MTE_FAR) -#define KERNEL_HWCAP_MTE_STORE_ONLY __khwcap3_feature(MTE_STORE_ONLY) -#define KERNEL_HWCAP_LSFE __khwcap3_feature(LSFE) -#define KERNEL_HWCAP_LS64 __khwcap3_feature(LS64) + +#include "asm/kernel-hwcap.h" /* * This yields a mask that user programs can use to figure out what diff --git a/arch/arm64/tools/Makefile b/arch/arm64/tools/Makefile index c2b34e761006..a94b3d9caad6 100644 --- a/arch/arm64/tools/Makefile +++ b/arch/arm64/tools/Makefile @@ -3,7 +3,7 @@ gen := arch/$(ARCH)/include/generated kapi := $(gen)/asm -kapisyshdr-y := cpucap-defs.h sysreg-defs.h +kapisyshdr-y := cpucap-defs.h kernel-hwcap.h sysreg-defs.h kapi-hdrs-y := $(addprefix $(kapi)/, $(kapisyshdr-y)) @@ -18,11 +18,17 @@ kapi: $(kapi-hdrs-y) quiet_cmd_gen_cpucaps = GEN $@ cmd_gen_cpucaps = mkdir -p $(dir $@); $(AWK) -f $(real-prereqs) > $@ +quiet_cmd_gen_kernel_hwcap = GEN $@ + cmd_gen_kernel_hwcap = mkdir -p $(dir $@); /bin/sh -e $(real-prereqs) > $@ + quiet_cmd_gen_sysreg = GEN $@ cmd_gen_sysreg = mkdir -p $(dir $@); $(AWK) -f $(real-prereqs) > $@ $(kapi)/cpucap-defs.h: $(src)/gen-cpucaps.awk $(src)/cpucaps FORCE $(call if_changed,gen_cpucaps) +$(kapi)/kernel-hwcap.h: $(src)/gen-kernel-hwcaps.sh $(srctree)/arch/arm64/include/uapi/asm/hwcap.h FORCE + $(call if_changed,gen_kernel_hwcap) + $(kapi)/sysreg-defs.h: $(src)/gen-sysreg.awk $(src)/sysreg FORCE $(call if_changed,gen_sysreg) diff --git a/arch/arm64/tools/gen-kernel-hwcaps.sh b/arch/arm64/tools/gen-kernel-hwcaps.sh new file mode 100644 index 000000000000..e7cdcf428d91 --- /dev/null +++ b/arch/arm64/tools/gen-kernel-hwcaps.sh @@ -0,0 +1,23 @@ +#!/bin/sh -e +# SPDX-License-Identifier: GPL-2.0 +# +# gen-kernel-hwcap.sh - Generate kernel internal hwcap.h definitions +# +# Copyright 2026 Arm, Ltd. + +if [ "$1" = "" ]; then + echo "$0: no filename specified" + exit 1 +fi + +echo "#ifndef __ASM_KERNEL_HWCAPS_H" +echo "#define __ASM_KERNEL_HWCAPS_H" +echo "" +echo "/* Generated file - do not edit */" +echo "" + +grep -E '^#define HWCAP[0-9]*_[A-Z0-9_]+' $1 | \ + sed 's/.*HWCAP\([0-9]*\)_\([A-Z0-9_]\+\).*/#define KERNEL_HWCAP_\2\t__khwcap\1_feature(\2)/' + +echo "" +echo "#endif /* __ASM_KERNEL_HWCAPS_H */" -- 2.47.3
