diff options
| -rw-r--r-- | arch/arm/kernel/setup.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c index 637c449e6060..910bb1796946 100644 --- a/arch/arm/kernel/setup.c +++ b/arch/arm/kernel/setup.c @@ -376,6 +376,7 @@ void __init early_print(const char *str, ...) static void __init cpuid_init_hwcaps(void) { int block; + u32 isar5; if (cpu_architecture() < CPU_ARCH_ARMv7) return; @@ -390,6 +391,27 @@ static void __init cpuid_init_hwcaps(void) block = cpuid_feature_extract(CPUID_EXT_MMFR0, 0); if (block >= 5) elf_hwcap |= HWCAP_LPAE; + + /* check for supported v8 Crypto instructions */ + isar5 = read_cpuid_ext(CPUID_EXT_ISAR5); + + block = cpuid_feature_extract_field(isar5, 4); + if (block >= 2) + elf_hwcap2 |= HWCAP2_PMULL; + if (block >= 1) + elf_hwcap2 |= HWCAP2_AES; + + block = cpuid_feature_extract_field(isar5, 8); + if (block >= 1) + elf_hwcap2 |= HWCAP2_SHA1; + + block = cpuid_feature_extract_field(isar5, 12); + if (block >= 1) + elf_hwcap2 |= HWCAP2_SHA2; + + block = cpuid_feature_extract_field(isar5, 16); + if (block >= 1) + elf_hwcap2 |= HWCAP2_CRC32; } static void __init elf_hwcap_fixup(void) |