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OPENRISC -
OPENRISCNEWSARCHITECTUREIMPLEMENTATIONSSOFTWARESYSTEM-ON-CHIPTUTORIALS The very quick start: jor1k. There is an interesting project in case you just want to try out the OpenRISC in your browser: jor1k is an instruction set simulator written in javascript that boots Linux inside your browser. You can play a game, watch some demos or surf the internet using this emulator.SOFTWARE - OPENRISC
For building your own software, OpenRISC is supported by a 32-bit GNU toolchain offering C and C++ support. The toolchain is available in several forms, depending on your use case:ARCHITECTURE
The OpenRISC 1000 architecture is a completely open architecture. It defines the architecture of a family of open source, RISC microprocessor cores. The OpenRISC 1000 architecture allows for a spectrum of chip and system implementations at a variety of price/performance points for a range of applications. It is a 32/64-bit load and store RISC TUTORIALS - OPENRISC The Official openrisc tutorials and docs: Debugging OpenRISC running on a platform with gdb. Building Linux for OpenRISC. De0 Nano running barebone software. Or1ksim simulating OpenRISC programs on the simulator. Building a musl toolchain which includes or1k-linux-musl-gcc. Building a newlib toolchain which includes or1k-elf-gcc and or1k-elf-gdb.SOURCE - OPENRISC
Ubuntu OpenRISC VirtualBox image. The purpose with the Ubuntu OpenRISC VirtualBox image is to make it SUPER easy to get started with the OpenRISC processor platform, both with hardware and software. The VirtualBox image contain the necessary tools pre-installed for both hardware and software.IMPLEMENTATIONS
Several implementations of the OpenRISC architecture exist. In the following we will summarize the most well known. Hardware Implementations. The hardware implementations are full processor implementations written in an Hardware Description Language.Such a description is either the input to a hardware synthesis, such as for an ASIC or an FPGA, or for an RTL simulation. OPENRISC 1000 ARCHITECTURE The OpenRISC 1000 architecture allows for a spectrum of chip and system implementations at a variety of price/performance points for a range of applications. It is a 32/64-bit load and store RISC architecture designed with emphasis on performance, simplicity, low power requirements, and scalability. COMMUNITY - OPENRISC Mailing lists. The OpenRISC mailing list where you can ask your questions around OpenRISC or get into the discussion with the developers. You can either just a mail to openrisc@lists.librecores.org or subscribe to the list to receive all mails on the list. OpenRISC forum. The OpenRISC forum is maintained on the opencores.org website, and is a web based discussion forum.SYSTEM-ON-CHIP
Description. Built on Migen, MiSoC provides a high performance, flexible and lightweight solution to build system-on-chips for various applications. LatticeMico32, modified to include an optional MMU (experimental). mor1kx, a better OpenRISC implementation. High performance memory controller capable of issuing several SDRAM commands per FPGA cycle. OR1K-ELF TOOLCHAIN (NEWLIB PORT FOR OPENRISC) Home; Tutorial; Build Instructions; Multicore Toolchain; The or1k-elf toolchain is a baremetal compiler, assembler, etc. toolchain for the OpenRISC architecture. The toolchain is based on the newlib C library and the standard GNU gcc, binutils and gdb. With this toolchain you can compile your own C code and execute it on the various OpenRISCtargets.
OPENRISC -
OPENRISCNEWSARCHITECTUREIMPLEMENTATIONSSOFTWARESYSTEM-ON-CHIPTUTORIALS The very quick start: jor1k. There is an interesting project in case you just want to try out the OpenRISC in your browser: jor1k is an instruction set simulator written in javascript that boots Linux inside your browser. You can play a game, watch some demos or surf the internet using this emulator.SOFTWARE - OPENRISC
For building your own software, OpenRISC is supported by a 32-bit GNU toolchain offering C and C++ support. The toolchain is available in several forms, depending on your use case:ARCHITECTURE
The OpenRISC 1000 architecture is a completely open architecture. It defines the architecture of a family of open source, RISC microprocessor cores. The OpenRISC 1000 architecture allows for a spectrum of chip and system implementations at a variety of price/performance points for a range of applications. It is a 32/64-bit load and store RISC TUTORIALS - OPENRISC The Official openrisc tutorials and docs: Debugging OpenRISC running on a platform with gdb. Building Linux for OpenRISC. De0 Nano running barebone software. Or1ksim simulating OpenRISC programs on the simulator. Building a musl toolchain which includes or1k-linux-musl-gcc. Building a newlib toolchain which includes or1k-elf-gcc and or1k-elf-gdb.SOURCE - OPENRISC
Ubuntu OpenRISC VirtualBox image. The purpose with the Ubuntu OpenRISC VirtualBox image is to make it SUPER easy to get started with the OpenRISC processor platform, both with hardware and software. The VirtualBox image contain the necessary tools pre-installed for both hardware and software.IMPLEMENTATIONS
Several implementations of the OpenRISC architecture exist. In the following we will summarize the most well known. Hardware Implementations. The hardware implementations are full processor implementations written in an Hardware Description Language.Such a description is either the input to a hardware synthesis, such as for an ASIC or an FPGA, or for an RTL simulation. OPENRISC 1000 ARCHITECTURE The OpenRISC 1000 architecture allows for a spectrum of chip and system implementations at a variety of price/performance points for a range of applications. It is a 32/64-bit load and store RISC architecture designed with emphasis on performance, simplicity, low power requirements, and scalability. COMMUNITY - OPENRISC Mailing lists. The OpenRISC mailing list where you can ask your questions around OpenRISC or get into the discussion with the developers. You can either just a mail to openrisc@lists.librecores.org or subscribe to the list to receive all mails on the list. OpenRISC forum. The OpenRISC forum is maintained on the opencores.org website, and is a web based discussion forum.SYSTEM-ON-CHIP
Description. Built on Migen, MiSoC provides a high performance, flexible and lightweight solution to build system-on-chips for various applications. LatticeMico32, modified to include an optional MMU (experimental). mor1kx, a better OpenRISC implementation. High performance memory controller capable of issuing several SDRAM commands per FPGA cycle. OR1K-ELF TOOLCHAIN (NEWLIB PORT FOR OPENRISC) Home; Tutorial; Build Instructions; Multicore Toolchain; The or1k-elf toolchain is a baremetal compiler, assembler, etc. toolchain for the OpenRISC architecture. The toolchain is based on the newlib C library and the standard GNU gcc, binutils and gdb. With this toolchain you can compile your own C code and execute it on the various OpenRISCtargets.
NEWS - OPENRISC
To the archive.. 28 May 2021 » Google Summer of Code 2021 (Stafford Horne) The Google Summer of Code is a yearly event which teams open source projects with college students. Students learn about technology and the open source community and projects benefit from new contributions. As in previous years this year OpenRISC is participating as part of the FOSSi foundation project. COMMUNITY - OPENRISC Mailing lists. The OpenRISC mailing list where you can ask your questions around OpenRISC or get into the discussion with the developers. You can either just a mail to openrisc@lists.librecores.org or subscribe to the list to receive all mails on the list. OpenRISC forum. The OpenRISC forum is maintained on the opencores.org website, and is a web based discussion forum.VERSION 1.3
Download pdf; Changes. ORFPX64A32 double-precision floating point operations on 32-bit hardware using register pairs (P14) Define CPUCFGR for ORFPX64A32 presence flag; New instructions lf.stod.d lf.dtos.d for converting between single and double precision floats (P7); New instruction l.adrp for constructing addresses (P9); New instructions lf.sfun* to support unordered compares (P11)VERSION 1.0
The 8-bit CPUID field of the VR can be used to determine the implementation. A list of know implementations and unique IDs can probably be maintained in a document kept alongside the architecture spec and/or on this wiki page.VERSION 1.2
Clarification on Atomic Boundaries (P16) 2017-08-18 - Stafford Horne. Section 7.3 Atomicity explains that a upon load a reservation is made at the address of the load memory location and that subsequent stores to the same memory location will cancel the reservation. It is not clear whether stores of byte or half-word size overlapping the memory location cause reservation cancellation. INSTRUCTION CLASSES (P5) l.cust1 instruction supported l.cust2 instruction supported l.cust3 instruction supported l.cust4 instruction supported l.cust5 instruction supported l.cust6 instruction supported l.cust7 instruction supported l.cust8 instruction supported l.cmov instruction supported l.csync instruction supported l.msync instruction supported l.psyncPROPOSAL TEMPLATE
Specify your change or addition to the specification. Include diagrams instruction encodings as they would be represented in the final pdf specification changes.. Supporters, listed below, can be added as the revision proposals are discussed on the list. DESIGNATION OF R10 FOR TLS (P15) In the Linux kernel and GCC r10 is already being used for TLS, so add it to the spec. Changes. Update section 16.2.1 Register Usage usage of R10 from ‘Callee-saved register’ to ‘Thread Local Storage’.. Additions. In the assigned roles tables of section 16.2.1 Register Usage explain: | R10 | *Thread Local Storage* used to locate the thread local storage structure. L.LW ASSEMBLY MNEMONIC (P4) Add the l.lw assembly mnemonic, which encodes as a l.lwz instruction. The l.lwz definition page in the spec should have: Format: l.lwzrD,I(rA)
SPR ACCESS UPDATES (P3) There has been a discussion about different SPRs and the possibility to access them from user space. The topic can be split in two aspects: Defining privileges on instruction and defining the behavior for insufficient privileges.OPENRISC -
OPENRISCNEWSARCHITECTUREIMPLEMENTATIONSSOFTWARESYSTEM-ON-CHIPTUTORIALS The very quick start: jor1k. There is an interesting project in case you just want to try out the OpenRISC in your browser: jor1k is an instruction set simulator written in javascript that boots Linux inside your browser. You can play a game, watch some demos or surf the internet using this emulator.SOFTWARE - OPENRISC
For building your own software, OpenRISC is supported by a 32-bit GNU toolchain offering C and C++ support. The toolchain is available in several forms, depending on your use case:ARCHITECTURE
The OpenRISC 1000 architecture is a completely open architecture. It defines the architecture of a family of open source, RISC microprocessor cores. The OpenRISC 1000 architecture allows for a spectrum of chip and system implementations at a variety of price/performance points for a range of applications. It is a 32/64-bit load and store RISC TUTORIALS - OPENRISC The Official openrisc tutorials and docs: Debugging OpenRISC running on a platform with gdb. Building Linux for OpenRISC. De0 Nano running barebone software. Or1ksim simulating OpenRISC programs on the simulator. Building a musl toolchain which includes or1k-linux-musl-gcc. Building a newlib toolchain which includes or1k-elf-gcc and or1k-elf-gdb.NEWS - OPENRISC
To the archive.. 28 May 2021 » Google Summer of Code 2021 (Stafford Horne) The Google Summer of Code is a yearly event which teams open source projects with college students. Students learn about technology and the open source community and projects benefit from new contributions. As in previous years this year OpenRISC is participating as part of the FOSSi foundation project.IMPLEMENTATIONS
Several implementations of the OpenRISC architecture exist. In the following we will summarize the most well known. Hardware Implementations. The hardware implementations are full processor implementations written in an Hardware Description Language.Such a description is either the input to a hardware synthesis, such as for an ASIC or an FPGA, or for an RTL simulation.SOURCE - OPENRISC
Ubuntu OpenRISC VirtualBox image. The purpose with the Ubuntu OpenRISC VirtualBox image is to make it SUPER easy to get started with the OpenRISC processor platform, both with hardware and software. The VirtualBox image contain the necessary tools pre-installed for both hardware and software. OPENRISC 1000 ARCHITECTURE The OpenRISC 1000 architecture allows for a spectrum of chip and system implementations at a variety of price/performance points for a range of applications. It is a 32/64-bit load and store RISC architecture designed with emphasis on performance, simplicity, low power requirements, and scalability. COMMUNITY - OPENRISC Mailing lists. The OpenRISC mailing list where you can ask your questions around OpenRISC or get into the discussion with the developers. You can either just a mail to openrisc@lists.librecores.org or subscribe to the list to receive all mails on the list. OpenRISC forum. The OpenRISC forum is maintained on the opencores.org website, and is a web based discussion forum. OR1K-ELF TOOLCHAIN (NEWLIB PORT FOR OPENRISC) Home; Tutorial; Build Instructions; Multicore Toolchain; The or1k-elf toolchain is a baremetal compiler, assembler, etc. toolchain for the OpenRISC architecture. The toolchain is based on the newlib C library and the standard GNU gcc, binutils and gdb. With this toolchain you can compile your own C code and execute it on the various OpenRISCtargets.
OPENRISC -
OPENRISCNEWSARCHITECTUREIMPLEMENTATIONSSOFTWARESYSTEM-ON-CHIPTUTORIALS The very quick start: jor1k. There is an interesting project in case you just want to try out the OpenRISC in your browser: jor1k is an instruction set simulator written in javascript that boots Linux inside your browser. You can play a game, watch some demos or surf the internet using this emulator.SOFTWARE - OPENRISC
For building your own software, OpenRISC is supported by a 32-bit GNU toolchain offering C and C++ support. The toolchain is available in several forms, depending on your use case:ARCHITECTURE
The OpenRISC 1000 architecture is a completely open architecture. It defines the architecture of a family of open source, RISC microprocessor cores. The OpenRISC 1000 architecture allows for a spectrum of chip and system implementations at a variety of price/performance points for a range of applications. It is a 32/64-bit load and store RISC TUTORIALS - OPENRISC The Official openrisc tutorials and docs: Debugging OpenRISC running on a platform with gdb. Building Linux for OpenRISC. De0 Nano running barebone software. Or1ksim simulating OpenRISC programs on the simulator. Building a musl toolchain which includes or1k-linux-musl-gcc. Building a newlib toolchain which includes or1k-elf-gcc and or1k-elf-gdb.NEWS - OPENRISC
To the archive.. 28 May 2021 » Google Summer of Code 2021 (Stafford Horne) The Google Summer of Code is a yearly event which teams open source projects with college students. Students learn about technology and the open source community and projects benefit from new contributions. As in previous years this year OpenRISC is participating as part of the FOSSi foundation project.IMPLEMENTATIONS
Several implementations of the OpenRISC architecture exist. In the following we will summarize the most well known. Hardware Implementations. The hardware implementations are full processor implementations written in an Hardware Description Language.Such a description is either the input to a hardware synthesis, such as for an ASIC or an FPGA, or for an RTL simulation.SOURCE - OPENRISC
Ubuntu OpenRISC VirtualBox image. The purpose with the Ubuntu OpenRISC VirtualBox image is to make it SUPER easy to get started with the OpenRISC processor platform, both with hardware and software. The VirtualBox image contain the necessary tools pre-installed for both hardware and software. OPENRISC 1000 ARCHITECTURE The OpenRISC 1000 architecture allows for a spectrum of chip and system implementations at a variety of price/performance points for a range of applications. It is a 32/64-bit load and store RISC architecture designed with emphasis on performance, simplicity, low power requirements, and scalability. COMMUNITY - OPENRISC Mailing lists. The OpenRISC mailing list where you can ask your questions around OpenRISC or get into the discussion with the developers. You can either just a mail to openrisc@lists.librecores.org or subscribe to the list to receive all mails on the list. OpenRISC forum. The OpenRISC forum is maintained on the opencores.org website, and is a web based discussion forum. OR1K-ELF TOOLCHAIN (NEWLIB PORT FOR OPENRISC) Home; Tutorial; Build Instructions; Multicore Toolchain; The or1k-elf toolchain is a baremetal compiler, assembler, etc. toolchain for the OpenRISC architecture. The toolchain is based on the newlib C library and the standard GNU gcc, binutils and gdb. With this toolchain you can compile your own C code and execute it on the various OpenRISCtargets.
COMMUNITY - OPENRISC Mailing lists. The OpenRISC mailing list where you can ask your questions around OpenRISC or get into the discussion with the developers. You can either just a mail to openrisc@lists.librecores.org or subscribe to the list to receive all mails on the list. OpenRISC forum. The OpenRISC forum is maintained on the opencores.org website, and is a web based discussion forum.VERSION 1.3
Download pdf; Changes. ORFPX64A32 double-precision floating point operations on 32-bit hardware using register pairs (P14) Define CPUCFGR for ORFPX64A32 presence flag; New instructions lf.stod.d lf.dtos.d for converting between single and double precision floats (P7); New instruction l.adrp for constructing addresses (P9); New instructions lf.sfun* to support unordered compares (P11)VERSION 1.0
The 8-bit CPUID field of the VR can be used to determine the implementation. A list of know implementations and unique IDs can probably be maintained in a document kept alongside the architecture spec and/or on this wiki page.VERSION 1.2
Clarification on Atomic Boundaries (P16) 2017-08-18 - Stafford Horne. Section 7.3 Atomicity explains that a upon load a reservation is made at the address of the load memory location and that subsequent stores to the same memory location will cancel the reservation. It is not clear whether stores of byte or half-word size overlapping the memory location cause reservation cancellation. OR1K-ELF TOOLCHAIN (NEWLIB PORT FOR OPENRISC) Home; Tutorial; Build Instructions; Multicore Toolchain; If you can't run on the prebuilt toolchain on your system or want to do a development build, you can build the toolchain from scratch. ANNOUNCING ARCHITECTURE VERSION 1.3 It has been been a few years since the release of OpenRISC version 1.2.But, it’s been a busy few years of getting GDB and GCC ports upstream. Now with the GCC port upstream we are able to make progress and this new architecture revision does just that bringing in a handful of new instructions: INSTRUCTION CLASSES (P5) l.cust1 instruction supported l.cust2 instruction supported l.cust3 instruction supported l.cust4 instruction supported l.cust5 instruction supported l.cust6 instruction supported l.cust7 instruction supported l.cust8 instruction supported l.cmov instruction supported l.csync instruction supported l.msync instruction supported l.psyncPROPOSAL TEMPLATE
Specify your change or addition to the specification. Include diagrams instruction encodings as they would be represented in the final pdf specification changes.. Supporters, listed below, can be added as the revision proposals are discussed on the list. ANNOUNCING ARCHITECTURE REVISION 1.2 We are pleased to announce that a new OpenRISC architecture specification revision 1.2 has been released. This release formalizes a few items which have already been implemented into our toolchains and Linux as well as describes the multicore OpenRISC architecture. L.LW ASSEMBLY MNEMONIC (P4) Add the l.lw assembly mnemonic, which encodes as a l.lwz instruction. The l.lwz definition page in the spec should have: Format: l.lwzrD,I(rA)
OPENRISC -
OPENRISCNEWSARCHITECTUREIMPLEMENTATIONSSOFTWARESYSTEM-ON-CHIPTUTORIALS The very quick start: jor1k. There is an interesting project in case you just want to try out the OpenRISC in your browser: jor1k is an instruction set simulator written in javascript that boots Linux inside your browser. You can play a game, watch some demos or surf the internet using this emulator.SOFTWARE - OPENRISC
For building your own software, OpenRISC is supported by a 32-bit GNU toolchain offering C and C++ support. The toolchain is available in several forms, depending on your use case: TUTORIALS - OPENRISC The Official openrisc tutorials and docs: Debugging OpenRISC running on a platform with gdb. Building Linux for OpenRISC. De0 Nano running barebone software. Or1ksim simulating OpenRISC programs on the simulator. Building a musl toolchain which includes or1k-linux-musl-gcc. Building a newlib toolchain which includes or1k-elf-gcc and or1k-elf-gdb.ARCHITECTURE
The OpenRISC 1000 architecture is a completely open architecture. It defines the architecture of a family of open source, RISC microprocessor cores. The OpenRISC 1000 architecture allows for a spectrum of chip and system implementations at a variety of price/performance points for a range of applications. It is a 32/64-bit load and store RISCSOURCE - OPENRISC
Ubuntu OpenRISC VirtualBox image. The purpose with the Ubuntu OpenRISC VirtualBox image is to make it SUPER easy to get started with the OpenRISC processor platform, both with hardware and software. The VirtualBox image contain the necessary tools pre-installed for both hardware and software.IMPLEMENTATIONS
Several implementations of the OpenRISC architecture exist. In the following we will summarize the most well known. Hardware Implementations. The hardware implementations are full processor implementations written in an Hardware Description Language.Such a description is either the input to a hardware synthesis, such as for an ASIC or an FPGA, or for an RTL simulation. OPENRISC 1000 ARCHITECTURE The OpenRISC 1000 architecture allows for a spectrum of chip and system implementations at a variety of price/performance points for a range of applications. It is a 32/64-bit load and store RISC architecture designed with emphasis on performance, simplicity, low power requirements, and scalability. COMMUNITY - OPENRISC Mailing lists. The OpenRISC mailing list where you can ask your questions around OpenRISC or get into the discussion with the developers. You can either just a mail to openrisc@lists.librecores.org or subscribe to the list to receive all mails on the list. OpenRISC forum. The OpenRISC forum is maintained on the opencores.org website, and is a web based discussion forum.SYSTEM-ON-CHIP
Description. Built on Migen, MiSoC provides a high performance, flexible and lightweight solution to build system-on-chips for various applications. LatticeMico32, modified to include an optional MMU (experimental). mor1kx, a better OpenRISC implementation. High performance memory controller capable of issuing several SDRAM commands per FPGA cycle. OR1K-ELF TOOLCHAIN (NEWLIB PORT FOR OPENRISC) Home; Tutorial; Build Instructions; Multicore Toolchain; The or1k-elf toolchain is a baremetal compiler, assembler, etc. toolchain for the OpenRISC architecture. The toolchain is based on the newlib C library and the standard GNU gcc, binutils and gdb. With this toolchain you can compile your own C code and execute it on the various OpenRISCtargets.
OPENRISC -
OPENRISCNEWSARCHITECTUREIMPLEMENTATIONSSOFTWARESYSTEM-ON-CHIPTUTORIALS The very quick start: jor1k. There is an interesting project in case you just want to try out the OpenRISC in your browser: jor1k is an instruction set simulator written in javascript that boots Linux inside your browser. You can play a game, watch some demos or surf the internet using this emulator.SOFTWARE - OPENRISC
For building your own software, OpenRISC is supported by a 32-bit GNU toolchain offering C and C++ support. The toolchain is available in several forms, depending on your use case: TUTORIALS - OPENRISC The Official openrisc tutorials and docs: Debugging OpenRISC running on a platform with gdb. Building Linux for OpenRISC. De0 Nano running barebone software. Or1ksim simulating OpenRISC programs on the simulator. Building a musl toolchain which includes or1k-linux-musl-gcc. Building a newlib toolchain which includes or1k-elf-gcc and or1k-elf-gdb.ARCHITECTURE
The OpenRISC 1000 architecture is a completely open architecture. It defines the architecture of a family of open source, RISC microprocessor cores. The OpenRISC 1000 architecture allows for a spectrum of chip and system implementations at a variety of price/performance points for a range of applications. It is a 32/64-bit load and store RISCSOURCE - OPENRISC
Ubuntu OpenRISC VirtualBox image. The purpose with the Ubuntu OpenRISC VirtualBox image is to make it SUPER easy to get started with the OpenRISC processor platform, both with hardware and software. The VirtualBox image contain the necessary tools pre-installed for both hardware and software.IMPLEMENTATIONS
Several implementations of the OpenRISC architecture exist. In the following we will summarize the most well known. Hardware Implementations. The hardware implementations are full processor implementations written in an Hardware Description Language.Such a description is either the input to a hardware synthesis, such as for an ASIC or an FPGA, or for an RTL simulation. OPENRISC 1000 ARCHITECTURE The OpenRISC 1000 architecture allows for a spectrum of chip and system implementations at a variety of price/performance points for a range of applications. It is a 32/64-bit load and store RISC architecture designed with emphasis on performance, simplicity, low power requirements, and scalability. COMMUNITY - OPENRISC Mailing lists. The OpenRISC mailing list where you can ask your questions around OpenRISC or get into the discussion with the developers. You can either just a mail to openrisc@lists.librecores.org or subscribe to the list to receive all mails on the list. OpenRISC forum. The OpenRISC forum is maintained on the opencores.org website, and is a web based discussion forum.SYSTEM-ON-CHIP
Description. Built on Migen, MiSoC provides a high performance, flexible and lightweight solution to build system-on-chips for various applications. LatticeMico32, modified to include an optional MMU (experimental). mor1kx, a better OpenRISC implementation. High performance memory controller capable of issuing several SDRAM commands per FPGA cycle. OR1K-ELF TOOLCHAIN (NEWLIB PORT FOR OPENRISC) Home; Tutorial; Build Instructions; Multicore Toolchain; The or1k-elf toolchain is a baremetal compiler, assembler, etc. toolchain for the OpenRISC architecture. The toolchain is based on the newlib C library and the standard GNU gcc, binutils and gdb. With this toolchain you can compile your own C code and execute it on the various OpenRISCtargets.
NEWS - OPENRISC
To the archive.. 28 May 2021 » Google Summer of Code 2021 (Stafford Horne) The Google Summer of Code is a yearly event which teams open source projects with college students. Students learn about technology and the open source community and projects benefit from new contributions. As in previous years this year OpenRISC is participating as part of the FOSSi foundation project.VERSION 1.3
Download pdf; Changes. ORFPX64A32 double-precision floating point operations on 32-bit hardware using register pairs (P14) Define CPUCFGR for ORFPX64A32 presence flag; New instructions lf.stod.d lf.dtos.d for converting between single and double precision floats (P7); New instruction l.adrp for constructing addresses (P9); New instructions lf.sfun* to support unordered compares (P11)VERSION 1.0
The 8-bit CPUID field of the VR can be used to determine the implementation. A list of know implementations and unique IDs can probably be maintained in a document kept alongside the architecture spec and/or on this wiki page. OR1K-ELF TOOLCHAIN (NEWLIB PORT FOR OPENRISC) Home; Tutorial; Build Instructions; Multicore Toolchain; If you can't run on the prebuilt toolchain on your system or want to do a development build, you can build the toolchain from scratch. OR1K-ELF TOOLCHAIN (NEWLIB PORT FOR OPENRISC) Home; Tutorial; Build Instructions; Multicore Toolchain; The or1k-elf toolchain contains the standard C library (printf, malloc, etc.).But beside this, it also contains a large set of function that help the baremetal programmer with controlling the processor, shortly summarized as or1k-support.. Getting StartedVERSION 1.2
Clarification on Atomic Boundaries (P16) 2017-08-18 - Stafford Horne. Section 7.3 Atomicity explains that a upon load a reservation is made at the address of the load memory location and that subsequent stores to the same memory location will cancel the reservation. It is not clear whether stores of byte or half-word size overlapping the memory location cause reservation cancellation. INSTRUCTION CLASSES (P5) l.cust1 instruction supported l.cust2 instruction supported l.cust3 instruction supported l.cust4 instruction supported l.cust5 instruction supported l.cust6 instruction supported l.cust7 instruction supported l.cust8 instruction supported l.cmov instruction supported l.csync instruction supported l.msync instruction supported l.psyncPROPOSAL TEMPLATE
Specify your change or addition to the specification. Include diagrams instruction encodings as they would be represented in the final pdf specification changes.. Supporters, listed below, can be added as the revision proposals are discussed on the list. L.LW ASSEMBLY MNEMONIC (P4) Add the l.lw assembly mnemonic, which encodes as a l.lwz instruction. The l.lwz definition page in the spec should have: Format: l.lwzrD,I(rA)
SPR ACCESS UPDATES (P3) There has been a discussion about different SPRs and the possibility to access them from user space. The topic can be split in two aspects: Defining privileges on instruction and defining the behavior for insufficient privileges.OPENRISC -
OPENRISCNEWSARCHITECTUREIMPLEMENTATIONSSOFTWARESYSTEM-ON-CHIPTUTORIALS The very quick start: jor1k. There is an interesting project in case you just want to try out the OpenRISC in your browser: jor1k is an instruction set simulator written in javascript that boots Linux inside your browser. You can play a game, watch some demos or surf the internet using this emulator.SOFTWARE - OPENRISC
For building your own software, OpenRISC is supported by a 32-bit GNU toolchain offering C and C++ support. The toolchain is available in several forms, depending on your use case: TUTORIALS - OPENRISC The Official openrisc tutorials and docs: Debugging OpenRISC running on a platform with gdb. Building Linux for OpenRISC. De0 Nano running barebone software. Or1ksim simulating OpenRISC programs on the simulator. Building a musl toolchain which includes or1k-linux-musl-gcc. Building a newlib toolchain which includes or1k-elf-gcc and or1k-elf-gdb.ARCHITECTURE
The OpenRISC 1000 architecture is a completely open architecture. It defines the architecture of a family of open source, RISC microprocessor cores. The OpenRISC 1000 architecture allows for a spectrum of chip and system implementations at a variety of price/performance points for a range of applications. It is a 32/64-bit load and store RISCSOURCE - OPENRISC
Ubuntu OpenRISC VirtualBox image. The purpose with the Ubuntu OpenRISC VirtualBox image is to make it SUPER easy to get started with the OpenRISC processor platform, both with hardware and software. The VirtualBox image contain the necessary tools pre-installed for both hardware and software.IMPLEMENTATIONS
Several implementations of the OpenRISC architecture exist. In the following we will summarize the most well known. Hardware Implementations. The hardware implementations are full processor implementations written in an Hardware Description Language.Such a description is either the input to a hardware synthesis, such as for an ASIC or an FPGA, or for an RTL simulation. OPENRISC 1000 ARCHITECTURE The OpenRISC 1000 architecture allows for a spectrum of chip and system implementations at a variety of price/performance points for a range of applications. It is a 32/64-bit load and store RISC architecture designed with emphasis on performance, simplicity, low power requirements, and scalability. COMMUNITY - OPENRISC Mailing lists. The OpenRISC mailing list where you can ask your questions around OpenRISC or get into the discussion with the developers. You can either just a mail to openrisc@lists.librecores.org or subscribe to the list to receive all mails on the list. OpenRISC forum. The OpenRISC forum is maintained on the opencores.org website, and is a web based discussion forum.SYSTEM-ON-CHIP
Description. Built on Migen, MiSoC provides a high performance, flexible and lightweight solution to build system-on-chips for various applications. LatticeMico32, modified to include an optional MMU (experimental). mor1kx, a better OpenRISC implementation. High performance memory controller capable of issuing several SDRAM commands per FPGA cycle. OR1K-ELF TOOLCHAIN (NEWLIB PORT FOR OPENRISC) Home; Tutorial; Build Instructions; Multicore Toolchain; The or1k-elf toolchain is a baremetal compiler, assembler, etc. toolchain for the OpenRISC architecture. The toolchain is based on the newlib C library and the standard GNU gcc, binutils and gdb. With this toolchain you can compile your own C code and execute it on the various OpenRISCtargets.
OPENRISC -
OPENRISCNEWSARCHITECTUREIMPLEMENTATIONSSOFTWARESYSTEM-ON-CHIPTUTORIALS The very quick start: jor1k. There is an interesting project in case you just want to try out the OpenRISC in your browser: jor1k is an instruction set simulator written in javascript that boots Linux inside your browser. You can play a game, watch some demos or surf the internet using this emulator.SOFTWARE - OPENRISC
For building your own software, OpenRISC is supported by a 32-bit GNU toolchain offering C and C++ support. The toolchain is available in several forms, depending on your use case: TUTORIALS - OPENRISC The Official openrisc tutorials and docs: Debugging OpenRISC running on a platform with gdb. Building Linux for OpenRISC. De0 Nano running barebone software. Or1ksim simulating OpenRISC programs on the simulator. Building a musl toolchain which includes or1k-linux-musl-gcc. Building a newlib toolchain which includes or1k-elf-gcc and or1k-elf-gdb.ARCHITECTURE
The OpenRISC 1000 architecture is a completely open architecture. It defines the architecture of a family of open source, RISC microprocessor cores. The OpenRISC 1000 architecture allows for a spectrum of chip and system implementations at a variety of price/performance points for a range of applications. It is a 32/64-bit load and store RISCSOURCE - OPENRISC
Ubuntu OpenRISC VirtualBox image. The purpose with the Ubuntu OpenRISC VirtualBox image is to make it SUPER easy to get started with the OpenRISC processor platform, both with hardware and software. The VirtualBox image contain the necessary tools pre-installed for both hardware and software.IMPLEMENTATIONS
Several implementations of the OpenRISC architecture exist. In the following we will summarize the most well known. Hardware Implementations. The hardware implementations are full processor implementations written in an Hardware Description Language.Such a description is either the input to a hardware synthesis, such as for an ASIC or an FPGA, or for an RTL simulation. OPENRISC 1000 ARCHITECTURE The OpenRISC 1000 architecture allows for a spectrum of chip and system implementations at a variety of price/performance points for a range of applications. It is a 32/64-bit load and store RISC architecture designed with emphasis on performance, simplicity, low power requirements, and scalability. COMMUNITY - OPENRISC Mailing lists. The OpenRISC mailing list where you can ask your questions around OpenRISC or get into the discussion with the developers. You can either just a mail to openrisc@lists.librecores.org or subscribe to the list to receive all mails on the list. OpenRISC forum. The OpenRISC forum is maintained on the opencores.org website, and is a web based discussion forum.SYSTEM-ON-CHIP
Description. Built on Migen, MiSoC provides a high performance, flexible and lightweight solution to build system-on-chips for various applications. LatticeMico32, modified to include an optional MMU (experimental). mor1kx, a better OpenRISC implementation. High performance memory controller capable of issuing several SDRAM commands per FPGA cycle. OR1K-ELF TOOLCHAIN (NEWLIB PORT FOR OPENRISC) Home; Tutorial; Build Instructions; Multicore Toolchain; The or1k-elf toolchain is a baremetal compiler, assembler, etc. toolchain for the OpenRISC architecture. The toolchain is based on the newlib C library and the standard GNU gcc, binutils and gdb. With this toolchain you can compile your own C code and execute it on the various OpenRISCtargets.
NEWS - OPENRISC
To the archive.. 28 May 2021 » Google Summer of Code 2021 (Stafford Horne) The Google Summer of Code is a yearly event which teams open source projects with college students. Students learn about technology and the open source community and projects benefit from new contributions. As in previous years this year OpenRISC is participating as part of the FOSSi foundation project.VERSION 1.3
Download pdf; Changes. ORFPX64A32 double-precision floating point operations on 32-bit hardware using register pairs (P14) Define CPUCFGR for ORFPX64A32 presence flag; New instructions lf.stod.d lf.dtos.d for converting between single and double precision floats (P7); New instruction l.adrp for constructing addresses (P9); New instructions lf.sfun* to support unordered compares (P11)VERSION 1.0
The 8-bit CPUID field of the VR can be used to determine the implementation. A list of know implementations and unique IDs can probably be maintained in a document kept alongside the architecture spec and/or on this wiki page. OR1K-ELF TOOLCHAIN (NEWLIB PORT FOR OPENRISC) Home; Tutorial; Build Instructions; Multicore Toolchain; If you can't run on the prebuilt toolchain on your system or want to do a development build, you can build the toolchain from scratch. OR1K-ELF TOOLCHAIN (NEWLIB PORT FOR OPENRISC) Home; Tutorial; Build Instructions; Multicore Toolchain; The or1k-elf toolchain contains the standard C library (printf, malloc, etc.).But beside this, it also contains a large set of function that help the baremetal programmer with controlling the processor, shortly summarized as or1k-support.. Getting StartedVERSION 1.2
Clarification on Atomic Boundaries (P16) 2017-08-18 - Stafford Horne. Section 7.3 Atomicity explains that a upon load a reservation is made at the address of the load memory location and that subsequent stores to the same memory location will cancel the reservation. It is not clear whether stores of byte or half-word size overlapping the memory location cause reservation cancellation. INSTRUCTION CLASSES (P5) l.cust1 instruction supported l.cust2 instruction supported l.cust3 instruction supported l.cust4 instruction supported l.cust5 instruction supported l.cust6 instruction supported l.cust7 instruction supported l.cust8 instruction supported l.cmov instruction supported l.csync instruction supported l.msync instruction supported l.psyncPROPOSAL TEMPLATE
Specify your change or addition to the specification. Include diagrams instruction encodings as they would be represented in the final pdf specification changes.. Supporters, listed below, can be added as the revision proposals are discussed on the list. L.LW ASSEMBLY MNEMONIC (P4) Add the l.lw assembly mnemonic, which encodes as a l.lwz instruction. The l.lwz definition page in the spec should have: Format: l.lwzrD,I(rA)
SPR ACCESS UPDATES (P3) There has been a discussion about different SPRs and the possibility to access them from user space. The topic can be split in two aspects: Defining privileges on instruction and defining the behavior for insufficient privileges.OPENRISC -
OPENRISCNEWSARCHITECTUREIMPLEMENTATIONSSOFTWARESYSTEM-ON-CHIPTUTORIALS The very quick start: jor1k. There is an interesting project in case you just want to try out the OpenRISC in your browser: jor1k is an instruction set simulator written in javascript that boots Linux inside your browser. You can play a game, watch some demos or surf the internet using this emulator.SOFTWARE - OPENRISC
For building your own software, OpenRISC is supported by a 32-bit GNU toolchain offering C and C++ support. The toolchain is available in several forms, depending on your use case: TUTORIALS - OPENRISC The Official openrisc tutorials and docs: Debugging OpenRISC running on a platform with gdb. Building Linux for OpenRISC. De0 Nano running barebone software. Or1ksim simulating OpenRISC programs on the simulator. Building a musl toolchain which includes or1k-linux-musl-gcc. Building a newlib toolchain which includes or1k-elf-gcc and or1k-elf-gdb.ARCHITECTURE
The OpenRISC 1000 architecture is a completely open architecture. It defines the architecture of a family of open source, RISC microprocessor cores. The OpenRISC 1000 architecture allows for a spectrum of chip and system implementations at a variety of price/performance points for a range of applications. It is a 32/64-bit load and store RISCSOURCE - OPENRISC
Ubuntu OpenRISC VirtualBox image. The purpose with the Ubuntu OpenRISC VirtualBox image is to make it SUPER easy to get started with the OpenRISC processor platform, both with hardware and software. The VirtualBox image contain the necessary tools pre-installed for both hardware and software.IMPLEMENTATIONS
Several implementations of the OpenRISC architecture exist. In the following we will summarize the most well known. Hardware Implementations. The hardware implementations are full processor implementations written in an Hardware Description Language.Such a description is either the input to a hardware synthesis, such as for an ASIC or an FPGA, or for an RTL simulation. OPENRISC 1000 ARCHITECTURE The OpenRISC 1000 architecture allows for a spectrum of chip and system implementations at a variety of price/performance points for a range of applications. It is a 32/64-bit load and store RISC architecture designed with emphasis on performance, simplicity, low power requirements, and scalability. COMMUNITY - OPENRISC Mailing lists. The OpenRISC mailing list where you can ask your questions around OpenRISC or get into the discussion with the developers. You can either just a mail to openrisc@lists.librecores.org or subscribe to the list to receive all mails on the list. OpenRISC forum. The OpenRISC forum is maintained on the opencores.org website, and is a web based discussion forum.SYSTEM-ON-CHIP
Description. Built on Migen, MiSoC provides a high performance, flexible and lightweight solution to build system-on-chips for various applications. LatticeMico32, modified to include an optional MMU (experimental). mor1kx, a better OpenRISC implementation. High performance memory controller capable of issuing several SDRAM commands per FPGA cycle. OR1K-ELF TOOLCHAIN (NEWLIB PORT FOR OPENRISC) Home; Tutorial; Build Instructions; Multicore Toolchain; The or1k-elf toolchain is a baremetal compiler, assembler, etc. toolchain for the OpenRISC architecture. The toolchain is based on the newlib C library and the standard GNU gcc, binutils and gdb. With this toolchain you can compile your own C code and execute it on the various OpenRISCtargets.
OPENRISC -
OPENRISCNEWSARCHITECTUREIMPLEMENTATIONSSOFTWARESYSTEM-ON-CHIPTUTORIALS The very quick start: jor1k. There is an interesting project in case you just want to try out the OpenRISC in your browser: jor1k is an instruction set simulator written in javascript that boots Linux inside your browser. You can play a game, watch some demos or surf the internet using this emulator.SOFTWARE - OPENRISC
For building your own software, OpenRISC is supported by a 32-bit GNU toolchain offering C and C++ support. The toolchain is available in several forms, depending on your use case: TUTORIALS - OPENRISC The Official openrisc tutorials and docs: Debugging OpenRISC running on a platform with gdb. Building Linux for OpenRISC. De0 Nano running barebone software. Or1ksim simulating OpenRISC programs on the simulator. Building a musl toolchain which includes or1k-linux-musl-gcc. Building a newlib toolchain which includes or1k-elf-gcc and or1k-elf-gdb.ARCHITECTURE
The OpenRISC 1000 architecture is a completely open architecture. It defines the architecture of a family of open source, RISC microprocessor cores. The OpenRISC 1000 architecture allows for a spectrum of chip and system implementations at a variety of price/performance points for a range of applications. It is a 32/64-bit load and store RISCSOURCE - OPENRISC
Ubuntu OpenRISC VirtualBox image. The purpose with the Ubuntu OpenRISC VirtualBox image is to make it SUPER easy to get started with the OpenRISC processor platform, both with hardware and software. The VirtualBox image contain the necessary tools pre-installed for both hardware and software.IMPLEMENTATIONS
Several implementations of the OpenRISC architecture exist. In the following we will summarize the most well known. Hardware Implementations. The hardware implementations are full processor implementations written in an Hardware Description Language.Such a description is either the input to a hardware synthesis, such as for an ASIC or an FPGA, or for an RTL simulation. OPENRISC 1000 ARCHITECTURE The OpenRISC 1000 architecture allows for a spectrum of chip and system implementations at a variety of price/performance points for a range of applications. It is a 32/64-bit load and store RISC architecture designed with emphasis on performance, simplicity, low power requirements, and scalability. COMMUNITY - OPENRISC Mailing lists. The OpenRISC mailing list where you can ask your questions around OpenRISC or get into the discussion with the developers. You can either just a mail to openrisc@lists.librecores.org or subscribe to the list to receive all mails on the list. OpenRISC forum. The OpenRISC forum is maintained on the opencores.org website, and is a web based discussion forum.SYSTEM-ON-CHIP
Description. Built on Migen, MiSoC provides a high performance, flexible and lightweight solution to build system-on-chips for various applications. LatticeMico32, modified to include an optional MMU (experimental). mor1kx, a better OpenRISC implementation. High performance memory controller capable of issuing several SDRAM commands per FPGA cycle. OR1K-ELF TOOLCHAIN (NEWLIB PORT FOR OPENRISC) Home; Tutorial; Build Instructions; Multicore Toolchain; The or1k-elf toolchain is a baremetal compiler, assembler, etc. toolchain for the OpenRISC architecture. The toolchain is based on the newlib C library and the standard GNU gcc, binutils and gdb. With this toolchain you can compile your own C code and execute it on the various OpenRISCtargets.
NEWS - OPENRISC
To the archive.. 28 May 2021 » Google Summer of Code 2021 (Stafford Horne) The Google Summer of Code is a yearly event which teams open source projects with college students. Students learn about technology and the open source community and projects benefit from new contributions. As in previous years this year OpenRISC is participating as part of the FOSSi foundation project.VERSION 1.3
Download pdf; Changes. ORFPX64A32 double-precision floating point operations on 32-bit hardware using register pairs (P14) Define CPUCFGR for ORFPX64A32 presence flag; New instructions lf.stod.d lf.dtos.d for converting between single and double precision floats (P7); New instruction l.adrp for constructing addresses (P9); New instructions lf.sfun* to support unordered compares (P11)VERSION 1.0
The 8-bit CPUID field of the VR can be used to determine the implementation. A list of know implementations and unique IDs can probably be maintained in a document kept alongside the architecture spec and/or on this wiki page. OR1K-ELF TOOLCHAIN (NEWLIB PORT FOR OPENRISC) Home; Tutorial; Build Instructions; Multicore Toolchain; If you can't run on the prebuilt toolchain on your system or want to do a development build, you can build the toolchain from scratch. OR1K-ELF TOOLCHAIN (NEWLIB PORT FOR OPENRISC) Home; Tutorial; Build Instructions; Multicore Toolchain; The or1k-elf toolchain contains the standard C library (printf, malloc, etc.).But beside this, it also contains a large set of function that help the baremetal programmer with controlling the processor, shortly summarized as or1k-support.. Getting StartedVERSION 1.2
Clarification on Atomic Boundaries (P16) 2017-08-18 - Stafford Horne. Section 7.3 Atomicity explains that a upon load a reservation is made at the address of the load memory location and that subsequent stores to the same memory location will cancel the reservation. It is not clear whether stores of byte or half-word size overlapping the memory location cause reservation cancellation. INSTRUCTION CLASSES (P5) l.cust1 instruction supported l.cust2 instruction supported l.cust3 instruction supported l.cust4 instruction supported l.cust5 instruction supported l.cust6 instruction supported l.cust7 instruction supported l.cust8 instruction supported l.cmov instruction supported l.csync instruction supported l.msync instruction supported l.psyncPROPOSAL TEMPLATE
Specify your change or addition to the specification. Include diagrams instruction encodings as they would be represented in the final pdf specification changes.. Supporters, listed below, can be added as the revision proposals are discussed on the list. L.LW ASSEMBLY MNEMONIC (P4) Add the l.lw assembly mnemonic, which encodes as a l.lwz instruction. The l.lwz definition page in the spec should have: Format: l.lwzrD,I(rA)
SPR ACCESS UPDATES (P3) There has been a discussion about different SPRs and the possibility to access them from user space. The topic can be split in two aspects: Defining privileges on instruction and defining the behavior for insufficient privileges.OpenRISC
* News
* Architecture
* Implementations
* Software
* System-on-Chip
* Tutorials
* Community
*
* Github
OPENRISC PROJECT OVERVIEW Welcome to the project overview of the OpenRISC project. The major goal of the project it to create a free and open processor for embedded systems. This includes:*
a free and open RISC instruction set architecture with DSP features*
a set of free, open source implementations of the architecture*
a complete set of free, open source software development tools, libraries, operating systems and applications*
a variety of system-on-chip and system simulators The project is driven by a very active community and has a long history. This unfortunately lead to scattered and partly outdated information. The goal of this page is to provide an overview over active parts of the project and the current development to ease the entry for newcomers or people seeking basic information. The information is collected from the following sites where you can find more information (which can be partly outdated):*
The OpenRISC pages at opencores.org*
The github projects
QUICK START
THE VERY QUICK START: JOR1K There is an interesting project in case you just want to try out the OpenRISC in your browser: jor1k is an instruction set simulator written in javascript that boots Linux inside your browser. You can play a game, watch some demos or surf the internet using this emulator. If that’s not enough, feel free to compile your own code and run it in the simulator. There also is a demowhere you can
edit, compile and run inside the browser, so that you don’t even need a cross-compiler toolchain!PROCESSOR CORES
There are two mainline processor core implementations:*
OR1200 is the original first implementation of the processor in Verilog. It implements the basic features and is still widely used, although not actively developed.*
mor1kx is a novel implementation which is more sophisticated and has different variants with respect to the number of pipeline stages, tightly coupled memory or the presence of a delay slot. It has also been recently extended to support atomic operations and multicore features.SYSTEM SIMULATORS
If you want to start with simulating the processor core to just try it out, you have the following options:*
or1ksim is an instruction accurate simulator with a lot of features including flexible configuration andgdb debugging.
*
qemu has a patch to support the OpenRISCprocessor
SYSTEM-ON-CHIP
While a processor core is still the heart of every system, the peripherals, memory etc. are of course equally important. There are a number of system-on-chip available that you can use to perform RTL simulations, SystemC simulations or perform an FPGA synthesis of an OpenRISC-powered entire system:*
fusesoc is a new SoC generator that not only supports OpenRISC. It also manages the available peripheral cores and allows you to easily configure and generate your system-on-chip.*
minsoc is a minimal OpenRISC-based system-on-chip, that is easy to configure and implement, but still uses the OR1200 processor implementation.*
OpTiMSoC is a flexible multicore system-on-chip that is based on a network-on-chip and connects a configurable number of OpenRISC (mor1kx) processors to arbitrarily large platforms.*
MiSoC is a SoC generator using the Python based Migen which can use the mor1k processor. Both high performance and optimized for small FPGA footprint, it supports a large number of development boards out thebox.
OPERATING SYSTEMS
If you want to run an operating system on your OpenRISC you have a fewoptions:
*
Linux has been ported and is now upstream in the standard Linux repositories (upstream is the term that denotes that you submitted your changes to an open source project and they have been accepted and are now part of this software)*
RTEMS has been ported during a Google Summer of Code project and is also upstream.TOOLCHAINS
A few toolchains are generally supported. A C library is an essential part of your toolchain as it provides you the basic features. The following toolchains with different C libraries are available:*
newlib is a small library mainly used for baremetal usage. We also maintain a port of it for the baremetal toolchain or1k-elf-gcc*
musl is a new C library with a strong emphasis on being light-weight and correctness. There also is a full toolchain or1k-linux-musl-gcc supported.*
uClibc-ng a reboot of the uClibc project, is a similar small library and primarily used for Linux applications. or1k-linux-uclibc-gcc is the standard toolchain for Linux at the moment.APPLICATIONS
Cross compiling applications to your OpenRISC embedded target and packaging them up into a root filesystem image could be tedious. There are a few options to smooth the process:*
Buildroot has support for building applications using the uClibc-ng toolchain.*
OpenADK from the maintainers of uClibc-ng has support for building using both uClibc-ng and musl toolchains.LATEST NEWS
* 04 JUN 2019 » ANNOUNCING ARCHITECTURE VERSION 1.3 _(Stafford Horne)_ It has been been a few years since the release of OpenRISC version 1.2. But, it’s been a busy few years of getting GDB and GCC ports upstream. Now with the GCC port upstream we are able to make progress and this new architecture revision does just that bringing in..... more * 27 MAY 2019 » GOOGLE SUMMER OF CODE 2019 _(Stafford Horne)_ The Google Summer of Code is a yearly event which teams open source projects with college students. Students learn about technology and the open source community and projects benefit from new contributions. As in previous years this year OpenRISC is participating as part of the FOSSi foundation project. We have.....more
* 09 NOV 2018 » GCC UPSTREAM FOR 9.0.0 _(Stafford Horne)_ We are proud to announce that the OpenRISC port for gcc has been committed to upstream. Mainline OpenRISC support will be available in the upcoming 9.0.0 release of GCC. Note, this has been a clean room rewrite of the OpenRISC gcc port. The old port can still befound in..... more
* 16 MAR 2018 » GDB UPSTREAMING AND BINARIES: 7.2.0 _(Stafford Horne)_ We are proud to announce that the OpenRISC port for gdb has been merged upstream. This was done back in December 2017 so its a bit late notice, but here it is. With that we have released an updated version of the toolchain with x86_64 binaries for easy consumption. The..... more * 22 OCT 2017 » ANNOUNCING ARCHITECTURE REVISION 1.2 _(Stafford Horne)_ We are pleased to announce that a new OpenRISC architecture specification revision 1.2 has been released. This release formalizes a few items which have already been implemented into our toolchains and Linux as well as describes the multicore OpenRISC architecture. See the full details on the release page.Update on..... more
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