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[skip ci] Add hierarchy to the CVA6 documentation (#995)
* Clarify scope of Verilator model Signed-off-by: Mike Thompson <mike@openhwgroup.org> * Update repo user docs Signed-off-by: Mike Thompson <mike@openhwgroup.org> * Update repo user docs Signed-off-by: Mike Thompson <mike@openhwgroup.org> * CORE-V not COREV Signed-off-by: Mike Thompson <mike@openhwgroup.org> * First release is v0.1.0 Signed-off-by: Mike Thompson <mike@openhwgroup.org> * Fix typo Signed-off-by: Mike Thompson <mike@openhwgroup.org> * Create documentation hierarchy Signed-off-by: Mike Thompson <mike@openhwgroup.org> Signed-off-by: Mike Thompson <mike@openhwgroup.org>
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47
docs/01_cva6_user/index.rst
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47
docs/01_cva6_user/index.rst
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@ -0,0 +1,47 @@
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..
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Copyright (c) 2022 OpenHW Group
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|
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Licensed under the Solderpad Hardware Licence, Version 2.0 (the "License");
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||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
https://solderpad.org/licenses/
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
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||||
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||||
SPDX-License-Identifier: Apache-2.0 WITH SHL-2.0
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OpenHW Group CVA6 User Manual
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================================
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Editor: **Florian Zaruba**
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`florian@openhwgroup.org <mailto:florian@openhwgroup.org?subject=CVA6%20User%20Manual>`__
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.. toctree::
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:maxdepth: 2
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:caption: Contents:
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intro
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pcgen_stage
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if_stage
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id_stage
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issue_stage
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ex_stage
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commit_stage
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cva6_soc
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Indices and tables
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------------------
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* :ref:`genindex`
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* :ref:`modindex`
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* :ref:`search`
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Documentation
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-------------
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The documentation is re-generated on pushes to master.
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When contributing to the project please consider the [contribution guide](https://github.com/openhwgroup/cva6/blob/master/CONTRIBUTING.md).
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|
|
@ -1,28 +1,30 @@
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==============================
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CVA6 requirement specification
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==============================
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===============================
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CVA6 Requirement Specification
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||||
===============================
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Revision 1.0.1
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.. __license:
|
||||
.. _license:
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License
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||||
=======
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||||
|
||||
| Copyright 2022 OpenHW Group and Thales
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| Copyright 2018 ETH Zürich and University of Bologna
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||||
| SPDX-License-Identifier: Apache-2.0 WITH SHL-2.1
|
||||
| Licensed under the Solderpad Hardware License v 2.1 (the “License”);
|
||||
you may not use this file except in compliance with the License, or,
|
||||
at your option, the Apache License version 2.0. You may obtain a copy
|
||||
of the License at https://solderpad.org/licenses/SHL-2.1/.
|
||||
| Unless required by applicable law or agreed to in writing, any work
|
||||
distributed under the License is distributed on an “AS IS” BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
|
||||
implied. See the License for the specific language governing
|
||||
permissions and limitations under the License.
|
||||
Copyright 2022 OpenHW Group and Thales
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Copyright 2018 ETH Zürich and University of Bologna
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.. __introduction:
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SPDX-License-Identifier: Apache-2.0 WITH SHL-2.1
|
||||
|
||||
Licensed under the Solderpad Hardware License v 2.1 (the “License”);
|
||||
you may not use this file except in compliance with the License, or,
|
||||
at your option, the Apache License version 2.0. You may obtain a copy
|
||||
of the License at https://solderpad.org/licenses/SHL-2.1/.
|
||||
Unless required by applicable law or agreed to in writing, any work
|
||||
distributed under the License is distributed on an “AS IS” BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
|
||||
implied. See the License for the specific language governing
|
||||
permissions and limitations under the License.
|
||||
|
||||
.. _introduction:
|
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|
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Introduction
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============
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|
|
@ -49,12 +51,12 @@ project freeze (PF gate).
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A list of abbreviations is available at the end of this document.
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.. __scope:
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.. _scope:
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Scope
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=====
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.. __scope_of_the_ip:
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.. _scope_of_the_ip:
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Scope of the IP
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---------------
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|
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@ -126,7 +128,7 @@ These are not in the scope of this specification:
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- The vector coprocessor (CV-VEC) that is planned to interface with
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CV64A6.
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.. __verified_configurations:
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.. _verified_configurations:
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Initial Release
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---------------
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|
|
@ -162,12 +164,12 @@ The full list of parameters for these configurations will be detailed in the use
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| cv32a6_imac_sv0 | ASIC | IMAC | 32 | No | Yes | None | None | 4 kB |
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+--------------------+---------+--------+------+-------+---------+---------+---------+---------+
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|
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.. __references:
|
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.. _references:
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|
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References
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==========
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.. __applicable_specifications:
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.. _applicable_specifications:
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Applicable specifications
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-------------------------
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|
|
@ -202,7 +204,7 @@ https://docs.openhwgroup.org/projects/openhw-group-core-v-xif/.
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University,
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https://parallel.princeton.edu/openpiton/docs/micro_arch.pdf.
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|
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.. __reference_documents:
|
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.. _reference_documents:
|
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|
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Reference documents
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||||
-------------------
|
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|
|
@ -214,12 +216,12 @@ version 1.0-fd39d01, 2022-01-12”
|
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Manual v2p0”, chapter 6,
|
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https://static.dev.sifive.com/SiFive-E31-Manual-v2p0.pdf
|
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|
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.. __functional_requirements:
|
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.. _functional_requirements:
|
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|
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Functional requirements
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=======================
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.. __general_requirement:
|
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.. _general_requirement:
|
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General requirement
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-------------------
|
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|
|
@ -238,7 +240,7 @@ General requirement
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As the RISC-V specification leaves space for variations, this
|
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specification specificies some of these variations.
|
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|
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.. __risc_v_standard_instructions:
|
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.. _risc_v_standard_instructions:
|
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|
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RISC-V standard instructions
|
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----------------------------
|
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|
|
@ -310,7 +312,7 @@ the F extension.
|
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Note to ISA-110: In the current design, the duration of the division
|
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is data-dependent, which can be a security issue.
|
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|
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.. __privileges_and_virtual_memory:
|
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.. _privileges_and_virtual_memory:
|
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|
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Privileges and virtual memory
|
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-----------------------------
|
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|
|
@ -343,7 +345,7 @@ The MMU includes a TLB and a hardware PTW.
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| | (hypervisor) version 1.0. |
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+-----------------------------------+-----------------------------------+
|
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.. __csr:
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.. _csr:
|
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CSR
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---
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|
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@ -352,7 +354,7 @@ There are no requirements related to CSR as they derive from other
|
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requirements, such as PVL-10, PVL-60… Details of CSRs will be available
|
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in the user’s manual.
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|
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.. __performance_counters:
|
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.. _performance_counters:
|
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|
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Performance counters
|
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--------------------
|
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|
|
@ -436,7 +438,7 @@ applications.
|
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The user’s manual will detail the list of counters, events and related
|
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controls.
|
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|
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.. __cache_requirements:
|
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.. _cache_requirements:
|
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|
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Cache requirements
|
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------------------
|
||||
|
|
@ -450,7 +452,7 @@ The project would like to adopt the recently ratified [RVcmo]
|
|||
specification. The analysis yet needs to be performed and will likely
|
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lead to an evolution of this specification.
|
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|
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.. __l1_write_through_data_cache:
|
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.. _l1_write_through_data_cache:
|
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|
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L1 write-through data cache
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~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
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|
|
@ -528,7 +530,7 @@ size/ways configurations may be implemented in the design.
|
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|
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The design will support one replacement policy allowed by L1W-80.
|
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|
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.. __l1_instruction_cache:
|
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.. _l1_instruction_cache:
|
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|
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L1 Instruction cache
|
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~~~~~~~~~~~~~~~~~~~~
|
||||
|
|
@ -586,7 +588,7 @@ size/ways configurations may be implemented in the design.
|
|||
|
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The design will support one replacement policy allowed by L1I-50.
|
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|
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.. __fence_t_custom_instruction:
|
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.. _fence_t_custom_instruction:
|
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|
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FENCE.T custom instruction
|
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--------------------------
|
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|
|
@ -626,7 +628,7 @@ decorrelation as expressed in the requirement with digital simulations.
|
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We can simulate the microarchitecture features and explain how they
|
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satisfy the requirement as Nils Wistoff’s work demonstrated.
|
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|
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.. __ppa_targets:
|
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.. _ppa_targets:
|
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|
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PPA targets
|
||||
===========
|
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|
|
@ -663,12 +665,12 @@ integrated in the continuous integration flow.
|
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| | performance per MHz. |
|
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+-----------------------------------+-----------------------------------+
|
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|
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.. __interface_requirements:
|
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.. _interface_requirements:
|
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|
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Interface requirements
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======================
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.. __memory_bus:
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.. _memory_bus:
|
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|
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Memory bus
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----------
|
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|
|
@ -694,7 +696,7 @@ The interface complies with AXI4. However, Atomic_Transactions is only
|
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defined in AXI5. For the sake of clarity, we do not use the AXI5-Lite
|
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interface.
|
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|
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.. __debug:
|
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.. _debug:
|
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|
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Debug
|
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-----
|
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|
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@ -709,7 +711,7 @@ Debug
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In addition, there can be an external debug module, not in the scope of
|
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the IP.
|
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|
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.. __interrupts:
|
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.. _interrupts:
|
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|
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Interrupts
|
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----------
|
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|
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@ -722,7 +724,7 @@ Interrupts
|
|||
| | implementation. |
|
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+-----------------------------------+-----------------------------------+
|
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|
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.. __coprocessor_interface:
|
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.. _coprocessor_interface:
|
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|
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Coprocessor interface
|
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---------------------
|
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|
|
@ -743,7 +745,7 @@ speculative execution.
|
|||
CVA6 can interface with several coprocessors simultaneously through a
|
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specific external feature implemented on the CV-X-IF interface.
|
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|
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.. __multi_core_interface:
|
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.. _multi_core_interface:
|
||||
|
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Multi-core interface
|
||||
--------------------
|
||||
|
|
@ -757,7 +759,7 @@ Multi-core interface
|
|||
| | [OpenPiton]. |
|
||||
+-----------------------------------+-----------------------------------+
|
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|
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.. __design_rules:
|
||||
.. _design_rules:
|
||||
|
||||
Design rules
|
||||
============
|
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|
|
@ -785,7 +787,7 @@ If technology-dependent blocks are used, e.g. to improve PPA on certain
|
|||
targets, the equivalent technology-independent block should be
|
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available. Parameters can be used to select between the implementations.
|
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|
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.. __list_of_abbreviations:
|
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.. _list_of_abbreviations:
|
||||
|
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List of abbreviations
|
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=====================
|
||||
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c0.24,0.238,0.562,0.424,0.968,0.561c0.404,0.137,0.918,0.205,1.539,0.205h3.538C378.27,32.289,378.783,32.22,379.188,32.083z"/>
|
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<path fill="#002D62" d="M386.863,30.923c0.083,0.277,0.234,0.516,0.454,0.719c0.221,0.203,0.518,0.361,0.891,0.475
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<path fill="#002D62" d="M408.558,25.029c0.637,0,1.178,0.082,1.622,0.244c0.444,0.164,0.806,0.385,1.085,0.668
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M401.717,29.121h6.794c0.291,0,0.528-0.025,0.714-0.078c0.185-0.053,0.326-0.123,0.424-0.211c0.099-0.09,0.165-0.191,0.201-0.311
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<line fill="#6D6E71" stroke="#6D6E71" stroke-miterlimit="10" x1="118.106" y1="82.673" x2="157.744" y2="82.673"/>
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<line fill="#6D6E71" stroke="#6D6E71" stroke-miterlimit="10" x1="370.925" y1="82.673" x2="410.562" y2="82.673"/>
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</svg>
|
||||
|
After Width: | Height: | Size: 28 KiB |
|
Before Width: | Height: | Size: 40 KiB After Width: | Height: | Size: 40 KiB |
|
|
@ -7,7 +7,7 @@
|
|||
|
||||
Original Author: Alae Eddine EZ ZEJJARI (alae-eddine.ez-zejjari@external.thalesgroup.com)
|
||||
|
||||
.. _CVA6_AXI:
|
||||
.. _CV32A6_AXI:
|
||||
|
||||
AXI
|
||||
===
|
||||
|
|
@ -7,7 +7,7 @@
|
|||
|
||||
Original Author: Jean-Roch COULON (jean-roch.coulon@thalesgroup.com)
|
||||
|
||||
.. _CVA6_FRONTEND:
|
||||
.. _CV32A6_FRONTEND:
|
||||
|
||||
FRONTEND Module
|
||||
===============
|
||||
|
|
@ -15,7 +15,7 @@
|
|||
|
||||
SPDX-License-Identifier: Apache-2.0 WITH SHL-2.0
|
||||
|
||||
.. _CVA6_GLOSSARY:
|
||||
.. _CV32A6_GLOSSARY:
|
||||
|
||||
Glossary
|
||||
========
|
||||
|
|
@ -7,11 +7,16 @@
|
|||
|
||||
Original Author: Jean-Roch COULON (jean-roch.coulon@thalesgroup.com)
|
||||
|
||||
.. _CVA6_INTRO:
|
||||
.. _CV32A6_INTRO:
|
||||
|
||||
Introduction
|
||||
=============
|
||||
|
||||
The OpenHW Group uses `semantic versioning <https://semver.org/>`_ to describe the release status of its IP.
|
||||
This document describes v0.1.0 of the CV32A6.
|
||||
This is not intended to be a formal release of CVA6.
|
||||
Currently, the first planned release of CVA6 is the CV32A6 v0.2.0.
|
||||
|
||||
CVA6 is a 6-stage in-order and single issue processor core which implements the RISC-V instruction set.
|
||||
CVA6 can be configured as a 32- or 64-bit core (RV32 or RV64), called CV32A6 or CV64A6.
|
||||
This document describes an initial version (v0.1.0) of the CV32A6 processor configuration.
|
||||
|
|
@ -10,11 +10,8 @@
|
|||
.. _CVA6_SUBSYSTEM:
|
||||
|
||||
|
||||
CV32A6 v0.1.0 Subsystem
|
||||
========================
|
||||
|
||||
Description
|
||||
-----------
|
||||
CV32A6 Subsystem
|
||||
================
|
||||
|
||||
The CV32A6 v0.1.0 is a subsystem composed of the modules and protocol interfaces as illustrated `CV32A6 v0.1.0 modules`_
|
||||
The processor is a Harvard-based modern architecture.
|
||||
|
|
@ -15,17 +15,17 @@
|
|||
|
||||
SPDX-License-Identifier: Apache-2.0 WITH SHL-2.0
|
||||
|
||||
OpenHW Group CV32A6 v0.1.0 Design Document
|
||||
==========================================
|
||||
CV32A6 Design Document
|
||||
======================
|
||||
|
||||
.. toctree::
|
||||
:maxdepth: 3
|
||||
:caption: Contents:
|
||||
|
||||
cva6_intro
|
||||
cva6_system
|
||||
cva6_frontend
|
||||
cva6_isa
|
||||
CV32A6_CSR
|
||||
cva6_axi
|
||||
cva6_glossary
|
||||
cv32a6_intro
|
||||
cv32a6_subsystem
|
||||
cv32a6_frontend
|
||||
cv32a6_isa
|
||||
cv32a6_csr
|
||||
cv32a6_axi
|
||||
cv32a6_glossary
|
||||
|
|
@ -1,35 +1,67 @@
|
|||
.. CVA6 documentation master file, created by
|
||||
sphinx-quickstart on Sun Jul 26 12:37:22 2020.
|
||||
You can adapt this file completely to your liking, but it should at least
|
||||
contain the root `toctree` directive.
|
||||
..
|
||||
Copyright (c) 2022 OpenHW Group
|
||||
|
||||
OpenHW Group CVA6 User Manual
|
||||
================================
|
||||
Editor: **Florian Zaruba**
|
||||
`florian@openhwgroup.org <mailto:florian@openhwgroup.org?subject=CVA6%20User%20Manual>`__
|
||||
Licensed under the Solderpad Hardware Licence, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
https://solderpad.org/licenses/
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
|
||||
SPDX-License-Identifier: Apache-2.0 WITH SHL-2.0
|
||||
|
||||
This is the CVA6 documentation master file.
|
||||
|
||||
CVA6: An application class RISC-V CPU core
|
||||
==========================================
|
||||
|
||||
The goal of the CVA6 project is create a family of production quality, open source, application class RISC-V CPU cores.
|
||||
The CVA6 targets both ASIC and FPGA implementations, although individual cores may target a specific implementation technology.
|
||||
The CVA6 is written in SystemVerilog and is heavily parameterizable.
|
||||
For example parameters can set the ILEN to be either 32- or 64-bits and support for floating point can be enabled/disabled.
|
||||
|
||||
CORE-V Nomenclature
|
||||
-------------------
|
||||
|
||||
**CORE-V** is the name of the OpenHW Group family of RISC-V cores.
|
||||
CVA6 is the name of a GitHub repository for the source code for a set of application class CORE-V cores.
|
||||
The CV prefix identifies it as a member of the CORE-V family and the A6 indicates that it is an application class processor with a six stage execution pipeline.
|
||||
However, the CVA6 "as is" is not intended to implement a specific production core.
|
||||
Rather, the CVA6 is expected to be the basis for a number of application class cores.
|
||||
The naming convention for these cores is:
|
||||
|
||||
``CV <ILEN> <class> <# of pipeline stages> <product identifier>``
|
||||
|
||||
Thus, the CV64A60 would be a 64-bit application core with a six stage pipeline.
|
||||
Note that in this example, the product identifer is "0".
|
||||
|
||||
|
||||
Organization of this Document
|
||||
-----------------------------
|
||||
|
||||
This documentation is split into multiple parts.
|
||||
|
||||
The :doc:`CVA6 User Guide <01_cva6_user/index>` provides a detailed introduction to the CVA6.
|
||||
This document is based on the original Ariane documentation and is aimed at hardware developers integrating CVA6 into a design.
|
||||
|
||||
The :doc:`CVA6 Requirements Specification <02_cva6_requirements/cva6_requirements_specification>` is the top-level specification of the CVA6.
|
||||
One of the key attributes of this document is to specify the feature set of specific CORE-V products based on CVA6.
|
||||
This document focuses on _what_ the CVA6 does, without detailed consideration of _how_ a specific requirement is implemented.
|
||||
The target audience of this document is current and existing members of the OpenHW Group who wish to participate in the definition of future cores based on the CVA6.
|
||||
|
||||
The :doc:`CV32A6 Design Specification <03_cv32a6_design/source/index>` describes in detail the **CV32A6**, the first production quality 32-bit application processor derived from the CVA6.
|
||||
The primary audience for this documentation are design and verification engineers working to bring the CV32A6 to TRL-5.
|
||||
|
||||
.. toctree::
|
||||
:maxdepth: 2
|
||||
:caption: Contents:
|
||||
:hidden:
|
||||
|
||||
intro
|
||||
pcgen_stage
|
||||
if_stage
|
||||
id_stage
|
||||
issue_stage
|
||||
ex_stage
|
||||
commit_stage
|
||||
cva6_soc
|
||||
|
||||
Indices and tables
|
||||
==================
|
||||
|
||||
* :ref:`genindex`
|
||||
* :ref:`modindex`
|
||||
* :ref:`search`
|
||||
|
||||
Documentation
|
||||
=============
|
||||
|
||||
The documentation is hosted in the docs folder and is re-created on pushes to master. When contributing to the project please consider the [contribution guide](https://github.com/openhwgroup/cva6/blob/master/CONTRIBUTING.md).
|
||||
01_cva6_user/index.rst
|
||||
02_cva6_requirements/cva6_requirements_specification.rst
|
||||
03_cv32a6_design/source/index.rst
|
||||
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue