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| 1 | OpenRISC Linux | ||
| 2 | ============== | ||
| 3 | |||
| 4 | This is a port of Linux to the OpenRISC class of microprocessors; the initial | ||
| 5 | target architecture, specifically, is the 32-bit OpenRISC 1000 family (or1k). | ||
| 6 | |||
| 7 | For information about OpenRISC processors and ongoing development: | ||
| 8 | |||
| 9 | website http://openrisc.net | ||
| 10 | |||
| 11 | For more information about Linux on OpenRISC, please contact South Pole AB. | ||
| 12 | |||
| 13 | email: info@southpole.se | ||
| 14 | |||
| 15 | website: http://southpole.se | ||
| 16 | http://southpoleconsulting.com | ||
| 17 | |||
| 18 | --------------------------------------------------------------------- | ||
| 19 | |||
| 20 | Build instructions for OpenRISC toolchain and Linux | ||
| 21 | =================================================== | ||
| 22 | |||
| 23 | In order to build and run Linux for OpenRISC, you'll need at least a basic | ||
| 24 | toolchain and, perhaps, the architectural simulator. Steps to get these bits | ||
| 25 | in place are outlined here. | ||
| 26 | |||
| 27 | 1) The toolchain can be obtained from openrisc.net. Instructions for building | ||
| 28 | a toolchain can be found at: | ||
| 29 | |||
| 30 | http://openrisc.net/toolchain-build.html | ||
| 31 | |||
| 32 | 2) or1ksim (optional) | ||
| 33 | |||
| 34 | or1ksim is the architectural simulator which will allow you to actually run | ||
| 35 | your OpenRISC Linux kernel if you don't have an OpenRISC processor at hand. | ||
| 36 | |||
| 37 | git clone git://openrisc.net/jonas/or1ksim-svn | ||
| 38 | |||
| 39 | cd or1ksim | ||
| 40 | ./configure --prefix=$OPENRISC_PREFIX | ||
| 41 | make | ||
| 42 | make install | ||
| 43 | |||
| 44 | 3) Linux kernel | ||
| 45 | |||
| 46 | Build the kernel as usual | ||
| 47 | |||
| 48 | make ARCH=openrisc defconfig | ||
| 49 | make ARCH=openrisc | ||
| 50 | |||
| 51 | 4) Run in architectural simulator | ||
| 52 | |||
| 53 | Grab the or1ksim platform configuration file (from the or1ksim source) and | ||
| 54 | together with your freshly built vmlinux, run your kernel with the following | ||
| 55 | incantation: | ||
| 56 | |||
| 57 | sim -f arch/openrisc/or1ksim.cfg vmlinux | ||
| 58 | |||
| 59 | --------------------------------------------------------------------- | ||
| 60 | |||
| 61 | Terminology | ||
| 62 | =========== | ||
| 63 | |||
| 64 | In the code, the following particles are used on symbols to limit the scope | ||
| 65 | to more or less specific processor implementations: | ||
| 66 | |||
| 67 | openrisc: the OpenRISC class of processors | ||
| 68 | or1k: the OpenRISC 1000 family of processors | ||
| 69 | or1200: the OpenRISC 1200 processor | ||
| 70 | |||
| 71 | --------------------------------------------------------------------- | ||
| 72 | |||
| 73 | History | ||
| 74 | ======== | ||
| 75 | |||
| 76 | 18. 11. 2003 Matjaz Breskvar (phoenix@bsemi.com) | ||
| 77 | initial port of linux to OpenRISC/or32 architecture. | ||
| 78 | all the core stuff is implemented and seams usable. | ||
| 79 | |||
| 80 | 08. 12. 2003 Matjaz Breskvar (phoenix@bsemi.com) | ||
| 81 | complete change of TLB miss handling. | ||
| 82 | rewrite of exceptions handling. | ||
| 83 | fully functional sash-3.6 in default initrd. | ||
| 84 | a much improved version with changes all around. | ||
| 85 | |||
| 86 | 10. 04. 2004 Matjaz Breskvar (phoenix@bsemi.com) | ||
| 87 | alot of bugfixes all over. | ||
| 88 | ethernet support, functional http and telnet servers. | ||
| 89 | running many standard linux apps. | ||
| 90 | |||
| 91 | 26. 06. 2004 Matjaz Breskvar (phoenix@bsemi.com) | ||
| 92 | port to 2.6.x | ||
| 93 | |||
| 94 | 30. 11. 2004 Matjaz Breskvar (phoenix@bsemi.com) | ||
| 95 | lots of bugfixes and enhancments. | ||
| 96 | added opencores framebuffer driver. | ||
| 97 | |||
| 98 | 09. 10. 2010 Jonas Bonn (jonas@southpole.se) | ||
| 99 | major rewrite to bring up to par with upstream Linux 2.6.36 | ||
