This allocates feature bits 0-4 in HWCAP2 for the crypto and CRC
extensions introduced in ARMv8.
Signed-off-by: Ard Biesheuvel <ard.biesheu...@linaro.org>
---
arch/arm/include/uapi/asm/hwcap.h | 5 +++++
arch/arm/kernel/setup.c | 5 +++++
2 files changed, 10 insertions(+)
diff --git a/arch/arm/include/uapi/asm/hwcap.h
b/arch/arm/include/uapi/asm/hwcap.h
index 87768b5..20d12f2 100644
--- a/arch/arm/include/uapi/asm/hwcap.h
+++ b/arch/arm/include/uapi/asm/hwcap.h
@@ -31,5 +31,10 @@
/*
* HWCAP2 flags - for elf_hwcap2 (in kernel) and AT_HWCAP2
*/
+#define HWCAP2_AES (1 << 0)
+#define HWCAP2_PMULL (1 << 1)
+#define HWCAP2_SHA1 (1 << 2)
+#define HWCAP2_SHA2 (1 << 3)
+#define HWCAP2_CRC32 (1 << 4)
#endif /* _UAPI__ASMARM_HWCAP_H */
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index ce3049c..ac3a7f2 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -996,6 +996,11 @@ static const char *hwcap_str[] = {
};
static const char *hwcap2_str[] = {
+ "aes",
+ "pmull",
+ "sha1",
+ "sha2",
+ "crc32",
NULL
};
--
1.8.3.2
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