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ARM: 7982/1: introduce HWCAP2 feature bits for ARMv8 Crypto Extensions

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This allocates feature bits 0-4 in HWCAP2 for the crypto and CRC
extensions introduced in ARMv8.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Ard Biesheuvel 2014-02-19 22:29:40 +01:00 committed by Russell King
parent b342ea4e4f
commit 8258a9895c
2 changed files with 10 additions and 0 deletions
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5
arch/arm/include/uapi/asm/hwcap.h
View File

@ -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 */

5
arch/arm/kernel/setup.c
View File

@ -1009,6 +1009,11 @@ static const char *hwcap_str[] = {
};
static const char *hwcap2_str[] = {
"aes",
"pmull",
"sha1",
"sha2",
"crc32",
NULL
};