From 5f005c7e4d37213a76a1d64ed558fe7e1ff138b6 Mon Sep 17 00:00:00 2001 From: Suzuki K Poulose Date: Thu, 24 Oct 2019 14:47:47 +0200 Subject: arm64: Expose support for optional ARMv8-A features [ Upstream commit f5e035f8694c3bdddc66ea46ecda965ee6853718 ] ARMv8-A adds a few optional features for ARMv8.2 and ARMv8.3. Expose them to the userspace via HWCAPs and mrs emulation. SHA2-512 - Instruction support for SHA512 Hash algorithm (e.g SHA512H, SHA512H2, SHA512U0, SHA512SU1) SHA3 - SHA3 crypto instructions (EOR3, RAX1, XAR, BCAX). SM3 - Instruction support for Chinese cryptography algorithm SM3 SM4 - Instruction support for Chinese cryptography algorithm SM4 DP - Dot Product instructions (UDOT, SDOT). Cc: Will Deacon Cc: Mark Rutland Cc: Dave Martin Cc: Marc Zyngier Reviewed-by: Catalin Marinas Signed-off-by: Suzuki K Poulose Signed-off-by: Will Deacon Signed-off-by: Ard Biesheuvel Signed-off-by: Greg Kroah-Hartman --- Documentation/arm64/cpu-feature-registers.txt | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) (limited to 'Documentation') diff --git a/Documentation/arm64/cpu-feature-registers.txt b/Documentation/arm64/cpu-feature-registers.txt index dad411d635d8..011ddfc1e570 100644 --- a/Documentation/arm64/cpu-feature-registers.txt +++ b/Documentation/arm64/cpu-feature-registers.txt @@ -110,10 +110,20 @@ infrastructure: x--------------------------------------------------x | Name | bits | visible | |--------------------------------------------------| - | RES0 | [63-32] | n | + | RES0 | [63-48] | n | + |--------------------------------------------------| + | DP | [47-44] | y | + |--------------------------------------------------| + | SM4 | [43-40] | y | + |--------------------------------------------------| + | SM3 | [39-36] | y | + |--------------------------------------------------| + | SHA3 | [35-32] | y | |--------------------------------------------------| | RDM | [31-28] | y | |--------------------------------------------------| + | RES0 | [27-24] | n | + |--------------------------------------------------| | ATOMICS | [23-20] | y | |--------------------------------------------------| | CRC32 | [19-16] | y | -- cgit v1.2.3