From 32fc3cd8ba2375b0ee385a42ba2a1aad5547816e Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 26 Jul 2019 09:51:24 -0300 Subject: docs: openrisc: convert to ReST and add to documentation body Manually convert the two openRisc documents to ReST, adding them to the Linux documentation body. Signed-off-by: Mauro Carvalho Chehab Acked-by: Stafford Horne Signed-off-by: Jonathan Corbet --- Documentation/openrisc/README | 110 ---------------------------- Documentation/openrisc/TODO | 12 --- Documentation/openrisc/index.rst | 18 +++++ Documentation/openrisc/openrisc_port.rst | 121 +++++++++++++++++++++++++++++++ Documentation/openrisc/todo.rst | 15 ++++ 5 files changed, 154 insertions(+), 122 deletions(-) delete mode 100644 Documentation/openrisc/README delete mode 100644 Documentation/openrisc/TODO create mode 100644 Documentation/openrisc/index.rst create mode 100644 Documentation/openrisc/openrisc_port.rst create mode 100644 Documentation/openrisc/todo.rst (limited to 'Documentation/openrisc') diff --git a/Documentation/openrisc/README b/Documentation/openrisc/README deleted file mode 100644 index 777a893d533d..000000000000 --- a/Documentation/openrisc/README +++ /dev/null @@ -1,110 +0,0 @@ -OpenRISC Linux -============== - -This is a port of Linux to the OpenRISC class of microprocessors; the initial -target architecture, specifically, is the 32-bit OpenRISC 1000 family (or1k). - -For information about OpenRISC processors and ongoing development: - - website http://openrisc.io - email openrisc@lists.librecores.org - ---------------------------------------------------------------------- - -Build instructions for OpenRISC toolchain and Linux -=================================================== - -In order to build and run Linux for OpenRISC, you'll need at least a basic -toolchain and, perhaps, the architectural simulator. Steps to get these bits -in place are outlined here. - -1) Toolchain - -Toolchain binaries can be obtained from openrisc.io or our github releases page. -Instructions for building the different toolchains can be found on openrisc.io -or Stafford's toolchain build and release scripts. - - binaries https://github.com/openrisc/or1k-gcc/releases - toolchains https://openrisc.io/software - building https://github.com/stffrdhrn/or1k-toolchain-build - -2) Building - -Build the Linux kernel as usual - - make ARCH=openrisc defconfig - make ARCH=openrisc - -3) Running on FPGA (optional) - -The OpenRISC community typically uses FuseSoC to manage building and programming -an SoC into an FPGA. The below is an example of programming a De0 Nano -development board with the OpenRISC SoC. During the build FPGA RTL is code -downloaded from the FuseSoC IP cores repository and built using the FPGA vendor -tools. Binaries are loaded onto the board with openocd. - - git clone https://github.com/olofk/fusesoc - cd fusesoc - sudo pip install -e . - - fusesoc init - fusesoc build de0_nano - fusesoc pgm de0_nano - - openocd -f interface/altera-usb-blaster.cfg \ - -f board/or1k_generic.cfg - - telnet localhost 4444 - > init - > halt; load_image vmlinux ; reset - -4) Running on a Simulator (optional) - -QEMU is a processor emulator which we recommend for simulating the OpenRISC -platform. Please follow the OpenRISC instructions on the QEMU website to get -Linux running on QEMU. You can build QEMU yourself, but your Linux distribution -likely provides binary packages to support OpenRISC. - - qemu openrisc https://wiki.qemu.org/Documentation/Platforms/OpenRISC - ---------------------------------------------------------------------- - -Terminology -=========== - -In the code, the following particles are used on symbols to limit the scope -to more or less specific processor implementations: - -openrisc: the OpenRISC class of processors -or1k: the OpenRISC 1000 family of processors -or1200: the OpenRISC 1200 processor - ---------------------------------------------------------------------- - -History -======== - -18. 11. 2003 Matjaz Breskvar (phoenix@bsemi.com) - initial port of linux to OpenRISC/or32 architecture. - all the core stuff is implemented and seams usable. - -08. 12. 2003 Matjaz Breskvar (phoenix@bsemi.com) - complete change of TLB miss handling. - rewrite of exceptions handling. - fully functional sash-3.6 in default initrd. - a much improved version with changes all around. - -10. 04. 2004 Matjaz Breskvar (phoenix@bsemi.com) - alot of bugfixes all over. - ethernet support, functional http and telnet servers. - running many standard linux apps. - -26. 06. 2004 Matjaz Breskvar (phoenix@bsemi.com) - port to 2.6.x - -30. 11. 2004 Matjaz Breskvar (phoenix@bsemi.com) - lots of bugfixes and enhancments. - added opencores framebuffer driver. - -09. 10. 2010 Jonas Bonn (jonas@southpole.se) - major rewrite to bring up to par with upstream Linux 2.6.36 diff --git a/Documentation/openrisc/TODO b/Documentation/openrisc/TODO deleted file mode 100644 index c43d4e1d14eb..000000000000 --- a/Documentation/openrisc/TODO +++ /dev/null @@ -1,12 +0,0 @@ -The OpenRISC Linux port is fully functional and has been tracking upstream -since 2.6.35. There are, however, remaining items to be completed within -the coming months. Here's a list of known-to-be-less-than-stellar items -that are due for investigation shortly, i.e. our TODO list: - --- Implement the rest of the DMA API... dma_map_sg, etc. - --- Finish the renaming cleanup... there are references to or32 in the code - which was an older name for the architecture. The name we've settled on is - or1k and this change is slowly trickling through the stack. For the time - being, or32 is equivalent to or1k. - diff --git a/Documentation/openrisc/index.rst b/Documentation/openrisc/index.rst new file mode 100644 index 000000000000..748b3eea1707 --- /dev/null +++ b/Documentation/openrisc/index.rst @@ -0,0 +1,18 @@ +.. SPDX-License-Identifier: GPL-2.0 + +===================== +OpenRISC Architecture +===================== + +.. toctree:: + :maxdepth: 2 + + openrisc_port + todo + +.. only:: subproject and html + + Indices + ======= + + * :ref:`genindex` diff --git a/Documentation/openrisc/openrisc_port.rst b/Documentation/openrisc/openrisc_port.rst new file mode 100644 index 000000000000..a18747a8d191 --- /dev/null +++ b/Documentation/openrisc/openrisc_port.rst @@ -0,0 +1,121 @@ +============== +OpenRISC Linux +============== + +This is a port of Linux to the OpenRISC class of microprocessors; the initial +target architecture, specifically, is the 32-bit OpenRISC 1000 family (or1k). + +For information about OpenRISC processors and ongoing development: + + ======= ============================= + website http://openrisc.io + email openrisc@lists.librecores.org + ======= ============================= + +--------------------------------------------------------------------- + +Build instructions for OpenRISC toolchain and Linux +=================================================== + +In order to build and run Linux for OpenRISC, you'll need at least a basic +toolchain and, perhaps, the architectural simulator. Steps to get these bits +in place are outlined here. + +1) Toolchain + +Toolchain binaries can be obtained from openrisc.io or our github releases page. +Instructions for building the different toolchains can be found on openrisc.io +or Stafford's toolchain build and release scripts. + + ========== ================================================= + binaries https://github.com/openrisc/or1k-gcc/releases + toolchains https://openrisc.io/software + building https://github.com/stffrdhrn/or1k-toolchain-build + ========== ================================================= + +2) Building + +Build the Linux kernel as usual:: + + make ARCH=openrisc defconfig + make ARCH=openrisc + +3) Running on FPGA (optional) + +The OpenRISC community typically uses FuseSoC to manage building and programming +an SoC into an FPGA. The below is an example of programming a De0 Nano +development board with the OpenRISC SoC. During the build FPGA RTL is code +downloaded from the FuseSoC IP cores repository and built using the FPGA vendor +tools. Binaries are loaded onto the board with openocd. + +:: + + git clone https://github.com/olofk/fusesoc + cd fusesoc + sudo pip install -e . + + fusesoc init + fusesoc build de0_nano + fusesoc pgm de0_nano + + openocd -f interface/altera-usb-blaster.cfg \ + -f board/or1k_generic.cfg + + telnet localhost 4444 + > init + > halt; load_image vmlinux ; reset + +4) Running on a Simulator (optional) + +QEMU is a processor emulator which we recommend for simulating the OpenRISC +platform. Please follow the OpenRISC instructions on the QEMU website to get +Linux running on QEMU. You can build QEMU yourself, but your Linux distribution +likely provides binary packages to support OpenRISC. + + ============= ====================================================== + qemu openrisc https://wiki.qemu.org/Documentation/Platforms/OpenRISC + ============= ====================================================== + +--------------------------------------------------------------------- + +Terminology +=========== + +In the code, the following particles are used on symbols to limit the scope +to more or less specific processor implementations: + +========= ======================================= +openrisc: the OpenRISC class of processors +or1k: the OpenRISC 1000 family of processors +or1200: the OpenRISC 1200 processor +========= ======================================= + +--------------------------------------------------------------------- + +History +======== + +18-11-2003 Matjaz Breskvar (phoenix@bsemi.com) + initial port of linux to OpenRISC/or32 architecture. + all the core stuff is implemented and seams usable. + +08-12-2003 Matjaz Breskvar (phoenix@bsemi.com) + complete change of TLB miss handling. + rewrite of exceptions handling. + fully functional sash-3.6 in default initrd. + a much improved version with changes all around. + +10-04-2004 Matjaz Breskvar (phoenix@bsemi.com) + alot of bugfixes all over. + ethernet support, functional http and telnet servers. + running many standard linux apps. + +26-06-2004 Matjaz Breskvar (phoenix@bsemi.com) + port to 2.6.x + +30-11-2004 Matjaz Breskvar (phoenix@bsemi.com) + lots of bugfixes and enhancments. + added opencores framebuffer driver. + +09-10-2010 Jonas Bonn (jonas@southpole.se) + major rewrite to bring up to par with upstream Linux 2.6.36 diff --git a/Documentation/openrisc/todo.rst b/Documentation/openrisc/todo.rst new file mode 100644 index 000000000000..420b18b87eda --- /dev/null +++ b/Documentation/openrisc/todo.rst @@ -0,0 +1,15 @@ +==== +TODO +==== + +The OpenRISC Linux port is fully functional and has been tracking upstream +since 2.6.35. There are, however, remaining items to be completed within +the coming months. Here's a list of known-to-be-less-than-stellar items +that are due for investigation shortly, i.e. our TODO list: + +- Implement the rest of the DMA API... dma_map_sg, etc. + +- Finish the renaming cleanup... there are references to or32 in the code + which was an older name for the architecture. The name we've settled on is + or1k and this change is slowly trickling through the stack. For the time + being, or32 is equivalent to or1k. -- cgit v1.2.3