diff options
Diffstat (limited to 'arch/arm/kernel/setup.c')
| -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 cb88c6e69377..75cd4699e7b3 100644 --- a/arch/arm/kernel/setup.c +++ b/arch/arm/kernel/setup.c @@ -450,6 +450,8 @@ static void __init cpuid_init_hwcaps(void) { int block; u32 isar5; + u32 isar6; + u32 pfr2; if (cpu_architecture() < CPU_ARCH_ARMv7) return; @@ -485,6 +487,18 @@ static void __init cpuid_init_hwcaps(void) block = cpuid_feature_extract_field(isar5, 16); if (block >= 1) elf_hwcap2 |= HWCAP2_CRC32; + + /* Check for Speculation barrier instruction */ + isar6 = read_cpuid_ext(CPUID_EXT_ISAR6); + block = cpuid_feature_extract_field(isar6, 12); + if (block >= 1) + elf_hwcap2 |= HWCAP2_SB; + + /* Check for Speculative Store Bypassing control */ + pfr2 = read_cpuid_ext(CPUID_EXT_PFR2); + block = cpuid_feature_extract_field(pfr2, 4); + if (block >= 1) + elf_hwcap2 |= HWCAP2_SSBS; } static void __init elf_hwcap_fixup(void) @@ -1249,6 +1263,12 @@ static const char *hwcap_str[] = { "vfpd32", "lpae", "evtstrm", + "fphp", + "asimdhp", + "asimddp", + "asimdfhm", + "asimdbf16", + "i8mm", NULL }; @@ -1258,6 +1278,8 @@ static const char *hwcap2_str[] = { "sha1", "sha2", "crc32", + "sb", + "ssbs", NULL }; |