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 <[email protected]> Cc: Will Deacon <[email protected]> Cc: Mark Rutland <[email protected]> Cc: Suzuki K Poulose <[email protected]> Cc: [email protected] Cc: [email protected] Suggested-by: Mark Rutland <[email protected]> Reviewed-by: Suzuki K Poulose <[email protected]> Signed-off-by: Anshuman Khandual <[email protected]> --- 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 b7f549d09c1c..02b1246e7dbf 100644 --- a/arch/arm64/include/asm/sysreg.h +++ b/arch/arm64/include/asm/sysreg.h @@ -796,6 +796,9 @@ #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 3d5c31a7cd9d..c929aed9fc4b 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -425,6 +425,8 @@ 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
