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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 | ||