Lines Matching +full:isa +full:- +full:extensions
1 # SPDX-License-Identifier: (GPL-2.0 OR MIT)
3 ---
4 $id: http://devicetree.org/schemas/riscv/extensions.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: RISC-V ISA extensions
10 - Paul Walmsley <paul.walmsley@sifive.com>
11 - Palmer Dabbelt <palmer@sifive.com>
12 - Conor Dooley <conor@kernel.org>
15 RISC-V has a large number of extensions, some of which are "standard"
16 extensions, meaning they are ratified by RISC-V International, and others
17 are "vendor" extensions.
23 The properties for standard extensions therefore map to their originally
24 ratified states, with the exception of the I, Zicntr & Zihpm extensions.
34 riscv,isa:
36 Identifies the specific RISC-V instruction set architecture
37 supported by the hart. These are documented in the RISC-V
38 User-Level ISA document, available from
41 Due to revisions of the ISA specification, some deviations
43 Notably, riscv,isa was defined prior to the creation of the
44 Zicntr, Zicsr, Zifencei and Zihpm extensions and thus "i"
47 While the isa strings in ISA specification are case
48 insensitive, letters in the riscv,isa string must be all
51 pattern: ^rv(?:64|32)imaf?d?q?c?b?k?j?p?v?h?(?:[hsxz](?:[0-9a-z])+)?(?:_[hsxz](?:[0-9a-z])+)*$
54 riscv,isa-base:
56 The base ISA implemented by this hart, as described by the 20191213
57 version of the unprivileged ISA specification.
59 - rv32i
60 - rv64i
62 riscv,isa-extensions:
63 $ref: /schemas/types.yaml#/definitions/string-array
65 description: Extensions supported by the hart.
68 # single letter extensions, in canonical order
69 - const: i
72 version of the unprivileged ISA specification.
75 the Zicntr and Zihpm extensions after the ratification of the
78 - const: m
81 ratified in the 20191213 version of the unprivileged ISA
84 - const: a
87 20191213 version of the unprivileged ISA specification.
89 - const: f
91 The standard F extension for single-precision floating point, as
92 ratified in the 20191213 version of the unprivileged ISA
95 - const: d
97 The standard D extension for double-precision floating-point, as
98 ratified in the 20191213 version of the unprivileged ISA
101 - const: q
103 The standard Q extension for quad-precision floating-point, as
104 ratified in the 20191213 version of the unprivileged ISA
107 - const: c
110 the 20191213 version of the unprivileged ISA specification.
112 - const: v
115 in-and-around commit 7a6c8ae ("Fix text that describes vfmv.v.f
116 encoding") of the riscv-v-spec.
118 - const: h
121 version of the privileged ISA specification.
123 # multi-letter extensions, sorted alphanumerically
124 - const: smaia
126 The standard Smaia supervisor-level extension for the advanced
127 interrupt architecture for machine-mode-visible csr and behavioural
129 request #42 from riscv/jhauser-2023-RC4") of riscv-aia.
131 - const: smstateen
134 added by other RISC-V extensions in H/S/VS/U/VU modes and as
135 ratified at commit a28bfae (Ratified (#7)) of riscv-state-enable.
137 - const: ssaia
139 The standard Ssaia supervisor-level extension for the advanced
140 interrupt architecture for supervisor-mode-visible csr and
142 ("Merge pull request #42 from riscv/jhauser-2023-RC4") of riscv-aia.
144 - const: sscofpmf
146 The standard Sscofpmf supervisor-level extension for count overflow
147 and mode-based filtering as ratified at commit 01d1df0 ("Add ability
148 to manually trigger workflow. (#2)") of riscv-count-overflow.
150 - const: sstc
152 The standard Sstc supervisor-level extension for time compare as
154 workflow. (#2)") of riscv-time-compare.
156 - const: svinval
158 The standard Svinval supervisor-level extension for fine-grained
159 address-translation cache invalidation as ratified in the 20191213
160 version of the privileged ISA specification.
162 - const: svnapot
164 The standard Svnapot supervisor-level extensions for napot
166 privileged ISA specification.
168 - const: svpbmt
170 The standard Svpbmt supervisor-level extensions for page-based
172 ISA specification.
174 - const: zacas
176 The Zacas extension for Atomic Compare-and-Swap (CAS) instructions
178 ratified") of the riscv-zacas.
180 - const: zba
182 The standard Zba bit-manipulation extension for address generation
184 request #158 from hirooih/clmul-fix-loop-end-condition") of
185 riscv-bitmanip.
187 - const: zbb
189 The standard Zbb bit-manipulation extension for basic bit-manipulation
191 hirooih/clmul-fix-loop-end-condition") of riscv-bitmanip.
193 - const: zbc
195 The standard Zbc bit-manipulation extension for carry-less
197 #158 from hirooih/clmul-fix-loop-end-condition") of riscv-bitmanip.
199 - const: zbkb
202 in version 1.0 of RISC-V Cryptography Extensions Volume I
205 - const: zbkc
207 The standard Zbkc carry-less multiply instructions as ratified
208 in version 1.0 of RISC-V Cryptography Extensions Volume I
211 - const: zbkx
214 in version 1.0 of RISC-V Cryptography Extensions Volume I
217 - const: zbs
219 The standard Zbs bit-manipulation extension for single-bit
221 from hirooih/clmul-fix-loop-end-condition") of riscv-bitmanip.
223 - const: zfa
227 riscv-isa-manual.
229 - const: zfh
231 The standard Zfh extension for 16-bit half-precision binary
232 floating-point instructions, as ratified in commit 64074bc ("Update
233 version numbers for Zfh/Zfinx") of riscv-isa-manual.
235 - const: zfhmin
238 16-bit half-precision binary floating-point instructions, as ratified
240 riscv-isa-manual.
242 - const: zk
245 in version 1.0 of RISC-V Cryptography Extensions Volume I
248 - const: zkn
250 The standard Zkn NIST algorithm suite extensions as ratified in
251 version 1.0 of RISC-V Cryptography Extensions Volume I
254 - const: zknd
257 ratified in version 1.0 of RISC-V Cryptography Extensions Volume I
260 - const: zkne
263 ratified in version 1.0 of RISC-V Cryptography Extensions Volume I
266 - const: zknh
269 ratified in version 1.0 of RISC-V Cryptography Extensions Volume I
272 - const: zkr
275 1.0 of RISC-V Cryptography Extensions Volume I specification.
278 device-tree has been provided.
280 - const: zks
282 The standard Zks ShangMi algorithm suite extensions as ratified in
283 version 1.0 of RISC-V Cryptography Extensions Volume I
286 - const: zksed
289 as ratified in version 1.0 of RISC-V Cryptography Extensions
292 - const: zksh
295 as ratified in version 1.0 of RISC-V Cryptography Extensions
298 - const: zkt
301 in version 1.0 of RISC-V Cryptography Extensions Volume I
304 - const: zicbom
307 ratified in commit 3dd606f ("Create cmobase-v1.0.pdf") of riscv-CMOs.
309 - const: zicbop
311 The standard Zicbop extension for cache-block prefetch instructions
312 as ratified in commit 3dd606f ("Create cmobase-v1.0.pdf") of
313 riscv-CMOs.
315 - const: zicboz
317 The standard Zicboz extension for cache-block zeroing as ratified
318 in commit 3dd606f ("Create cmobase-v1.0.pdf") of riscv-CMOs.
320 - const: zicntr
323 ratified in the 20191213 version of the unprivileged ISA
326 - const: zicond
329 conditional-select/move operations as ratified in commit 95cf1f9
330 ("Add changes requested by Ved during signoff") of riscv-zicond.
332 - const: zicsr
336 unprivileged ISA specification.
339 special case read-only CSRs, that were moved into the Zicntr and
340 Zihpm extensions after the ratification of the 20191213 version of
343 - const: zifencei
345 The standard Zifencei extension for instruction-fetch fence, as
346 ratified in the 20191213 version of the unprivileged ISA
349 - const: zihintpause
352 commit d8ab5c7 ("Zihintpause is ratified") of the riscv-isa-manual.
354 - const: zihintntl
356 The standard Zihintntl extension for non-temporal locality hints, as
358 riscv-isa-manual.
360 - const: zihpm
363 ratified in the 20191213 version of the unprivileged ISA
366 - const: ztso
370 riscv-isa-manual.
372 - const: zvbb
374 The standard Zvbb extension for vectored basic bit-manipulation
376 riscv-crypto-spec-vector.adoc") of riscv-crypto.
378 - const: zvbc
382 riscv-crypto-spec-vector.adoc") of riscv-crypto.
384 - const: zvfh
386 The standard Zvfh extension for vectored half-precision
387 floating-point instructions, as ratified in commit e2ccd05
388 ("Remove draft warnings from Zvfh[min]") of riscv-v-spec.
390 - const: zvfhmin
392 The standard Zvfhmin extension for vectored minimal half-precision
393 floating-point instructions, as ratified in commit e2ccd05
394 ("Remove draft warnings from Zvfh[min]") of riscv-v-spec.
396 - const: zvkb
398 The standard Zvkb extension for vector cryptography bit-manipulation
400 riscv-crypto-spec-vector.adoc") of riscv-crypto.
402 - const: zvkg
405 ratified in commit 56ed795 ("Update riscv-crypto-spec-vector.adoc")
406 of riscv-crypto.
408 - const: zvkn
411 ratified in commit 56ed795 ("Update riscv-crypto-spec-vector.adoc")
412 of riscv-crypto.
414 - const: zvknc
418 riscv-crypto-spec-vector.adoc") of riscv-crypto.
420 - const: zvkned
424 riscv-crypto-spec-vector.adoc") of riscv-crypto.
426 - const: zvkng
430 riscv-crypto-spec-vector.adoc") of riscv-crypto.
432 - const: zvknha
434 The standard Zvknha extension for NIST suite: vector SHA-2 secure,
435 hash (SHA-256 only) instructions, as ratified in commit
436 56ed795 ("Update riscv-crypto-spec-vector.adoc") of riscv-crypto.
438 - const: zvknhb
440 The standard Zvknhb extension for NIST suite: vector SHA-2 secure,
441 hash (SHA-256 and SHA-512) instructions, as ratified in commit
442 56ed795 ("Update riscv-crypto-spec-vector.adoc") of riscv-crypto.
444 - const: zvks
448 riscv-crypto-spec-vector.adoc") of riscv-crypto.
450 - const: zvksc
454 ("Update riscv-crypto-spec-vector.adoc") of riscv-crypto.
456 - const: zvksed
460 riscv-crypto-spec-vector.adoc") of riscv-crypto.
462 - const: zvksh
466 riscv-crypto-spec-vector.adoc") of riscv-crypto.
468 - const: zvksg
472 riscv-crypto-spec-vector.adoc") of riscv-crypto.
474 - const: zvkt
476 The standard Zvkt extension for vector data-independent execution
478 riscv-crypto-spec-vector.adoc") of riscv-crypto.