On Fri, May 17, 2024 at 04:52:46PM +0200, Clément Léger wrote:
> Add description for Zca, Zcf, Zcd and Zcb extensions which are part the
> Zc* standard extensions for code size reduction. Additional validation
> rules are added since Zcb depends on Zca, Zcf, depends on Zca and F, Zcd
> depends on Zca and D and finally, Zcf can not be present on rv64.
>
> Signed-off-by: Clément Léger <cleger@xxxxxxxxxxxx>
> Reviewed-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx>
> ---
> .../devicetree/bindings/riscv/extensions.yaml | 78 +++++++++++++++++++
> 1 file changed, 78 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/riscv/extensions.yaml b/Documentation/devicetree/bindings/riscv/extensions.yaml
> index b9100addeb90..39084c58d4e4 100644
> --- a/Documentation/devicetree/bindings/riscv/extensions.yaml
> +++ b/Documentation/devicetree/bindings/riscv/extensions.yaml
> @@ -220,6 +220,38 @@ properties:
> instructions as ratified at commit 6d33919 ("Merge pull request #158
> from hirooih/clmul-fix-loop-end-condition") of riscv-bitmanip.
>
> + - const: zca
> + description: |
> + The Zca extension part of Zc* standard extensions for code size
> + reduction, as ratified in commit 8be3419c1c0 ("Zcf doesn't exist on
> + RV64 as it contains no instructions") of riscv-code-size-reduction,
> + merged in the riscv-isa-manual by commit dbc79cf28a2 ("Initial seed
> + of zc.adoc to src tree.").
> +
> + - const: zcb
> + description: |
> + The Zcb extension part of Zc* standard extensions for code size
> + reduction, as ratified in commit 8be3419c1c0 ("Zcf doesn't exist on
> + RV64 as it contains no instructions") of riscv-code-size-reduction,
> + merged in the riscv-isa-manual by commit dbc79cf28a2 ("Initial seed
> + of zc.adoc to src tree.").
> +
> + - const: zcd
> + description: |
> + The Zcd extension part of Zc* standard extensions for code size
> + reduction, as ratified in commit 8be3419c1c0 ("Zcf doesn't exist on
> + RV64 as it contains no instructions") of riscv-code-size-reduction,
> + merged in the riscv-isa-manual by commit dbc79cf28a2 ("Initial seed
> + of zc.adoc to src tree.").
> +
> + - const: zcf
> + description: |
> + The Zcf extension part of Zc* standard extensions for code size
> + reduction, as ratified in commit 8be3419c1c0 ("Zcf doesn't exist on
> + RV64 as it contains no instructions") of riscv-code-size-reduction,
> + merged in the riscv-isa-manual by commit dbc79cf28a2 ("Initial seed
> + of zc.adoc to src tree.").
> +
> - const: zfa
> description:
> The standard Zfa extension for additional floating point
> @@ -499,5 +531,51 @@ properties:
> The T-HEAD specific 0.7.1 vector implementation as written in
> https://github.com/T-head-Semi/thead-extension-spec/blob/95358cb2cca9489361c61d335e03d3134b14133f/xtheadvector.adoc.
>
> + allOf:
> + # Zcb depends on Zca
> + - if:
> + contains:
> + const: zcb
> + then:
> + contains:
> + const: zca
> + # Zcd depends on Zca and D
> + - if:
> + contains:
> + const: zcd
> + then:
> + allOf:
> + - contains:
> + const: zca
> + - contains:
> + const: d
> + # Zcf depends on Zca and F
> + - if:
> + contains:
> + const: zcf
> + then:
> + allOf:
> + - contains:
> + const: zca
> + - contains:
> + const: f
> +
> +allOf:
> + # Zcf extension does not exist on rv64
> + - if:
> + properties:
> + riscv,isa-extensions:
> + contains:
> + const: zcf
> + riscv,isa-base:
> + contains:
> + const: rv64i
> + then:
> + properties:
> + riscv,isa-extensions:
> + not:
> + contains:
> + const: zcf
> +
> additionalProperties: true
> ...
> --
> 2.43.0
>
>
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Reviewed-by: Charlie Jenkins <charlie@xxxxxxxxxxxx>
