[PATCH V3 11/16] arm64/cpufeature: Add remaining feature bits in ID_AA64PFR1 register
From: Anshuman Khandual <hidden>
Date: 2020-05-02 13:35:53
Also in:
lkml
Subsystem:
arm64 port (aarch64 architecture), the rest · Maintainers:
Catalin Marinas, Will Deacon, Linus Torvalds
Enable the following features bits in ID_AA64PFR1 register as per ARM DDI 0487F.a specification. Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Suzuki K Poulose <suzuki.poulose@arm.com> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org Suggested-by: Will Deacon <will@kernel.org> Signed-off-by: Anshuman Khandual <redacted> --- arch/arm64/include/asm/sysreg.h | 4 ++++ arch/arm64/kernel/cpufeature.c | 4 ++++ 2 files changed, 8 insertions(+)
diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h
index c93ea6613f51..f1c0d874220a 100644
--- a/arch/arm64/include/asm/sysreg.h
+++ b/arch/arm64/include/asm/sysreg.h@@ -666,7 +666,11 @@ #define ID_AA64PFR0_EL0_32BIT_64BIT 0x2 /* id_aa64pfr1 */ +#define ID_AA64PFR1_MPAMFRAC_SHIFT 16 +#define ID_AA64PFR1_RASFRAC_SHIFT 12 +#define ID_AA64PFR1_MTE_SHIFT 8 #define ID_AA64PFR1_SSBS_SHIFT 4 +#define ID_AA64PFR1_BT_SHIFT 0 #define ID_AA64PFR1_SSBS_PSTATE_NI 0 #define ID_AA64PFR1_SSBS_PSTATE_ONLY 1
diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c
index f5a39e040804..181e09d62147 100644
--- a/arch/arm64/kernel/cpufeature.c
+++ b/arch/arm64/kernel/cpufeature.c@@ -233,7 +233,11 @@ static const struct arm64_ftr_bits ftr_id_aa64pfr0[] = { }; static const struct arm64_ftr_bits ftr_id_aa64pfr1[] = { + ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR1_MPAMFRAC_SHIFT, 4, 0), + ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR1_RASFRAC_SHIFT, 4, 0), + ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR1_MTE_SHIFT, 4, 0), ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR1_SSBS_SHIFT, 4, ID_AA64PFR1_SSBS_PSTATE_NI), + ARM64_FTR_BITS(FTR_VISIBLE, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64PFR1_BT_SHIFT, 4, 0), ARM64_FTR_END, };
--
2.20.1
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