diff mbox series

[v3,05/20] dt-bindings: riscv: add scalar crypto ISA extensions description

Message ID 20231107105556.517187-6-cleger@rivosinc.com
State New
Headers
Series riscv: report more ISA extensions through hwprobe |

Commit Message

Clément Léger Nov. 7, 2023, 10:55 a.m. UTC 
  Add description for scalar crypto ISA extensions which can now be
reported through hwprobe for userspace usage. These extensions are the
following:

- Zbkb
- Zbkc
- Zbkx
- Zknd
- Zkne
- Zknh
- Zkr
- Zksed
- Zksh
- Zkt

Signed-off-by: Clément Léger <cleger@rivosinc.com>
---
 .../devicetree/bindings/riscv/extensions.yaml | 77 +++++++++++++++++++
 1 file changed, 77 insertions(+)

Comments

Conor Dooley Nov. 8, 2023, 2:57 p.m. UTC | #1 
Yo,

On Tue, Nov 07, 2023 at 11:55:41AM +0100, Clément Léger wrote:
> +        - const: zkr
> +          description:
> +            The standard Zkr entropy source extension as ratified in version
> +            1.0 of RISC-V Cryptography Extensions Volume I specification.

So the topic of the seed CSR came up on the U-Boot ML in the last few
days:
https://lore.kernel.org/u-boot/20231107212431.GP6601@bill-the-cat
I think we need to document that having zkr in riscv,isa-extensions
means that the CSR is accessible at the privilege level to which that
devicetree has been provided.
Clément Léger Nov. 8, 2023, 3:11 p.m. UTC | #2 
On 08/11/2023 15:57, Conor Dooley wrote:
> Yo,
> 
> On Tue, Nov 07, 2023 at 11:55:41AM +0100, Clément Léger wrote:
>> +        - const: zkr
>> +          description:
>> +            The standard Zkr entropy source extension as ratified in version
>> +            1.0 of RISC-V Cryptography Extensions Volume I specification.
> 
> So the topic of the seed CSR came up on the U-Boot ML in the last few
> days:
> https://lore.kernel.org/u-boot/20231107212431.GP6601@bill-the-cat
> I think we need to document that having zkr in riscv,isa-extensions
> means that the CSR is accessible at the privilege level to which that
> devicetree has been provided.

Hi Conor,

Indeed, seems like a good idea.

Thanks,

Clément
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/riscv/extensions.yaml b/Documentation/devicetree/bindings/riscv/extensions.yaml
index c91ab0e46648..a89363ad653a 100644
--- a/Documentation/devicetree/bindings/riscv/extensions.yaml
+++ b/Documentation/devicetree/bindings/riscv/extensions.yaml
@@ -190,12 +190,89 @@  properties:
             multiplication as ratified at commit 6d33919 ("Merge pull request
             #158 from hirooih/clmul-fix-loop-end-condition") of riscv-bitmanip.
 
+        - const: zbkb
+          description:
+            The standard Zbkb bitmanip instructions for cryptography as ratified
+            in version 1.0 of RISC-V Cryptography Extensions Volume I
+            specification.
+
+        - const: zbkc
+          description:
+            The standard Zbkc carry-less multiply instructions as ratified
+            in version 1.0 of RISC-V Cryptography Extensions Volume I
+            specification.
+
+        - const: zbkx
+          description:
+            The standard Zbkx crossbar permutation instructions as ratified
+            in version 1.0 of RISC-V Cryptography Extensions Volume I
+            specification.
+
         - const: zbs
           description: |
             The standard Zbs bit-manipulation extension for single-bit
             instructions as ratified at commit 6d33919 ("Merge pull request #158
             from hirooih/clmul-fix-loop-end-condition") of riscv-bitmanip.
 
+        - const: zk
+          description:
+            The standard Zk Standard Scalar cryptography extension as ratified
+            in version 1.0 of RISC-V Cryptography Extensions Volume I
+            specification.
+
+        - const: zkn
+          description:
+            The standard Zkn NIST algorithm suite extensions as ratified in
+            version 1.0 of RISC-V Cryptography Extensions Volume I
+            specification.
+
+        - const: zknd
+          description: |
+            The standard Zknd for NIST suite: AES decryption instructions as
+            ratified in version 1.0 of RISC-V Cryptography Extensions Volume I
+            specification.
+
+        - const: zkne
+          description: |
+            The standard Zkne for NIST suite: AES encryption instructions as
+            ratified in version 1.0 of RISC-V Cryptography Extensions Volume I
+            specification.
+
+        - const: zknh
+          description: |
+            The standard Zknh for NIST suite: hash function instructions as
+            ratified in version 1.0 of RISC-V Cryptography Extensions Volume I
+            specification.
+
+        - const: zkr
+          description:
+            The standard Zkr entropy source extension as ratified in version
+            1.0 of RISC-V Cryptography Extensions Volume I specification.
+
+        - const: zks
+          description:
+            The standard Zks ShangMi algorithm suite extensions as ratified in
+            version 1.0 of RISC-V Cryptography Extensions Volume I
+            specification.
+
+        - const: zksed
+          description: |
+            The standard Zksed for ShangMi suite: SM4 block cipher instructions
+            as ratified in version 1.0 of RISC-V Cryptography Extensions
+            Volume I specification.
+
+        - const: zksh
+          description: |
+            The standard Zksh for ShangMi suite: SM3 hash function instructions
+            as ratified in version 1.0 of RISC-V Cryptography Extensions
+            Volume I specification.
+
+        - const: zkt
+          description:
+            The standard Zkt for data independent execution latency as ratified
+            in version 1.0 of RISC-V Cryptography Extensions Volume I
+            specification.
+
         - const: zicbom
           description:
             The standard Zicbom extension for base cache management operations as