Messages in this thread Patch in this message | | | From | Anshuman Khandual <> | Subject | [PATCH V2 07/16] arm64/cpufeature: Add remaining feature bits in ID_PFR0 register | Date | Tue, 14 Apr 2020 15:18:21 +0530 |
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Enable DIT and CSV2 feature bits in ID_PFR0 register as per ARM DDI 0487F.a specification. Except RAS and AMU, all other feature bits are now enabled.
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: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> --- arch/arm64/include/asm/sysreg.h | 3 +++ arch/arm64/kernel/cpufeature.c | 2 ++ 2 files changed, 5 insertions(+)
diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h index 88b3a16defbb..32b7539b965f 100644 --- a/arch/arm64/include/asm/sysreg.h +++ b/arch/arm64/include/asm/sysreg.h @@ -780,6 +780,9 @@ #define ID_MMFR5_ETS_SHIFT 0 +#define ID_PFR0_DIT_SHIFT 24 +#define ID_PFR0_CSV2_SHIFT 16 + #define ID_PFR2_SSBS_SHIFT 4 #define ID_PFR2_CSV3_SHIFT 0 diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index 233adc32b842..8b289a6815eb 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -359,6 +359,8 @@ static const struct arm64_ftr_bits ftr_id_isar6[] = { }; static const struct arm64_ftr_bits ftr_id_pfr0[] = { + ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_PFR0_DIT_SHIFT, 4, 0), + ARM64_FTR_BITS(FTR_HIDDEN, FTR_NONSTRICT, FTR_LOWER_SAFE, ID_PFR0_CSV2_SHIFT, 4, 0), ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 12, 4, 0), /* State3 */ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 8, 4, 0), /* State2 */ ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, 4, 4, 0), /* State1 */ -- 2.20.1
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