diff options
Diffstat (limited to 'arch/arm/vfp/vfpmodule.c')
| -rw-r--r-- | arch/arm/vfp/vfpmodule.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/arch/arm/vfp/vfpmodule.c b/arch/arm/vfp/vfpmodule.c index 2cb355c1b5b7..281110423871 100644 --- a/arch/arm/vfp/vfpmodule.c +++ b/arch/arm/vfp/vfpmodule.c @@ -774,6 +774,7 @@ static int __init vfp_init(void) { unsigned int vfpsid; unsigned int cpu_arch = cpu_architecture(); + unsigned int isar6; /* * Enable the access to the VFP on all online CPUs so the @@ -831,7 +832,38 @@ static int __init vfp_init(void) if ((fmrx(MVFR1) & 0xf0000000) == 0x10000000) elf_hwcap |= HWCAP_VFPv4; + if (((fmrx(MVFR1) & MVFR1_ASIMDHP_MASK) >> MVFR1_ASIMDHP_BIT) == 0x2) + elf_hwcap |= HWCAP_ASIMDHP; + if (((fmrx(MVFR1) & MVFR1_FPHP_MASK) >> MVFR1_FPHP_BIT) == 0x3) + elf_hwcap |= HWCAP_FPHP; } + + /* + * Check for the presence of Advanced SIMD Dot Product + * instructions. + */ + isar6 = read_cpuid_ext(CPUID_EXT_ISAR6); + if (cpuid_feature_extract_field(isar6, 4) == 0x1) + elf_hwcap |= HWCAP_ASIMDDP; + /* + * Check for the presence of Advanced SIMD Floating point + * half-precision multiplication instructions. + */ + if (cpuid_feature_extract_field(isar6, 8) == 0x1) + elf_hwcap |= HWCAP_ASIMDFHM; + /* + * Check for the presence of Advanced SIMD Bfloat16 + * floating point instructions. + */ + if (cpuid_feature_extract_field(isar6, 20) == 0x1) + elf_hwcap |= HWCAP_ASIMDBF16; + /* + * Check for the presence of Advanced SIMD and floating point + * Int8 matrix multiplication instructions instructions. + */ + if (cpuid_feature_extract_field(isar6, 24) == 0x1) + elf_hwcap |= HWCAP_I8MM; + /* Extract the architecture version on pre-cpuid scheme */ } else { if (vfpsid & FPSID_NODOUBLE) { |