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dt-bindings: riscv: Add Sha and its comprised extensions

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Add descriptions for the Sha extension and the seven extensions it
comprises: Shcounterenw, Shgatpa, Shtvala, Shvsatpa, Shvstvala, Shvstvecd,
and Ssstateen.

Sha is ratified in the RVA23 Profiles Version 1.0 (commit 0273f3c921b6
"rva23/rvb23 ratified") as a new profile-defined extension that captures
the full set of features that are mandated to be supported along with
the H extension.

Extensions Shcounterenw, Shgatpa, Shtvala, Shvsatpa, Shvstvala, Shvstvecd,
and Ssstateen are ratified in the RISC-V Profiles Version 1.0 (commit
b1d806605f87 "Updated to ratified state").

The requirement status for Sha and its comprised extension in RISC-V
Profiles are:
 - Sha: Mandatory in RVA23S64
 - H: Optional in RVA22S64; Mandatory in RVA23S64
 - Shcounterenw: Optional in RVA22S64; Mandatory in RVA23S64
 - Shgatpa: Optional in RVA22S64; Mandatory in RVA23S64
 - Shtvala: Optional in RVA22S64; Mandatory in RVA23S64
 - Shvsatpa: Optional in RVA22S64; Mandatory in RVA23S64
 - Shvstvala: Optional in RVA22S64; Mandatory in RVA23S64
 - Shvstvecd: Optional in RVA22S64; Mandatory in RVA23S64
 - Ssstateen: Optional in RVA22S64; Mandatory in RVA23S64

Signed-off-by: Guodong Xu <guodong@riscstar.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
This commit is contained in:
Guodong Xu 2026-01-10 13:18:21 +08:00 committed by Conor Dooley
parent c712413333
commit 89febd6a02
1 changed files with 57 additions and 0 deletions
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57
Documentation/devicetree/bindings/riscv/extensions.yaml
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@ -129,6 +129,57 @@ properties:
Document Version 20211203.
# multi-letter extensions, sorted alphanumerically
- const: sha
description: |
The standard Sha extension for augmented hypervisor extension as
ratified in RVA23 Profiles Version 1.0, with commit 0273f3c921b6
("rva23/rvb23 ratified").
Sha captures the full set of features that are mandated to be
supported along with the H extension. Sha comprises the following
extensions: H, Shcounterenw, Shgatpa, Shtvala, Shvsatpa, Shvstvala,
Shvstvecd, and Ssstateen.
- const: shcounterenw
description: |
The standard Shcounterenw extension for support writable enables
in hcounteren for any supported counter, as ratified in RISC-V
Profiles Version 1.0, with commit b1d806605f87 ("Updated to
ratified state.")
- const: shgatpa
description: |
The standard Shgatpa extension indicates that for each supported
virtual memory scheme SvNN supported in satp, the corresponding
hgatp SvNNx4 mode must be supported. The hgatp mode Bare must
also be supported. It is ratified in RISC-V Profiles Version 1.0,
with commit b1d806605f87 ("Updated to ratified state.")
- const: shtvala
description: |
The standard Shtvala extension for htval be written with the
faulting guest physical address in all circumstances permitted by
the ISA. It is ratified in RISC-V Profiles Version 1.0, with
commit b1d806605f87 ("Updated to ratified state.")
- const: shvsatpa
description: |
The standard Shvsatpa extension for vsatp supporting all translation
modes supported in satp, as ratified in RISC-V Profiles Version 1.0,
with commit b1d806605f87 ("Updated to ratified state.")
- const: shvstvala
description: |
The standard Shvstvala extension for vstval provides all needed
values as ratified in RISC-V Profiles Version 1.0, with commit
b1d806605f87 ("Updated to ratified state.")
- const: shvstvecd
description: |
The standard Shvstvecd extension for vstvec supporting Direct mode,
as ratified in RISC-V Profiles Version 1.0, with commit b1d806605f87
("Updated to ratified state.")
- const: smaia
description: |
The standard Smaia supervisor-level extension for the advanced
@ -187,6 +238,12 @@ properties:
ratified at commit d70011dde6c2 ("Update to ratified state")
of riscv-j-extension.
- const: ssstateen
description: |
The standard Ssstateen extension for supervisor-mode view of the
state-enable extension, as ratified in RISC-V Profiles Version 1.0,
with commit b1d806605f87 ("Updated to ratified state.")
- const: sstc
description: |
The standard Sstc supervisor-level extension for time compare as