linux/arch/openrisc
Linus Torvalds b58ed041a3 Device tree changes for v3.8
Bug fixes, little cleanups, and documentation changes. The most invasive
 thing here touches a bunch of the arch directories to use a common build
 rule for .dtb files. There are no major changes to functionality here
 other than a ew new helper functions.
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Merge tag 'devicetree-for-linus' of git://git.secretlab.ca/git/linux-2.6

Pull device tree changes from Grant Likely:
 "Here are the DT changes I've got queued up for v3.8.  As described
  below, there are a lot of bug fixes here and documentation updates but
  nothing major:

  Bug fixes, little cleanups, and documentation changes.  The most
  invasive thing here touches a bunch of the arch directories to use a
  common build rule for .dtb files.  There are no major changes to
  functionality here other than a few new helper functions."

* tag 'devicetree-for-linus' of git://git.secretlab.ca/git/linux-2.6: (34 commits)
  arm64: Fix the dtbs target building
  mtd: nand: davinci: fix the binding documentation
  rtc: rtc-mv: Add the device tree binding documentation
  devicetree/bindings: Move gpio-leds binding into leds directory
  of/vendor-prefixes: add Imagination Technologies
  microblaze: use new common dtc rule
  c6x: use new common dtc rule
  openrisc: use new common dtc rule
  arm64: Add dtbs target for building all the enabled dtb files
  arm64: use new common dtc rule
  ARM: dt: change .dtb build rules to build in dts directory
  kbuild: centralize .dts->.dtb rule
  Fix build when CONFIG_W1_MASTER_GPIO=m b exporting "allnodes"
  of/spi: Honour "status=disabled" property of device
  of_mdio: Honour "status=disabled" property of device
  of_i2c: Honour "status=disabled" property of device
  powerpc: Fix fallout from device_node->name constification
  of: add 'const' for of_parse_phandle parameter *np
  Documentation: correct of_platform_populate() argument list
  script: dtc: clean generated files
  ...
2012-12-11 11:30:41 -08:00
..
boot/dts openrisc: use new common dtc rule 2012-12-03 17:17:48 -06:00
configs OpenRISC: Build infrastructure 2011-07-22 18:46:30 +02:00
include UAPI Disintegration 2012-10-09 2012-10-13 07:38:37 +02:00
kernel openrisk: fix altstack switching on sigreturn 2012-11-28 21:46:11 -05:00
lib openrisc: delay: fix handling of counter overflow 2012-09-01 16:36:14 +02:00
mm readahead: fault retry breaks mmap file read random detection 2012-10-09 16:22:47 +09:00
Kconfig Make most arch asm/module.h files use asm-generic/module.h 2012-09-28 14:31:03 +09:30
Makefile openrisc: use new common dtc rule 2012-12-03 17:17:48 -06:00
README.openrisc OpenRISC: Miscellaneous 2011-07-22 18:46:41 +02:00
TODO.openrisc OpenRISC: Miscellaneous 2011-07-22 18:46:41 +02:00

README.openrisc

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.net

For more information about Linux on OpenRISC, please contact South Pole AB.

	email:		info@southpole.se

	website:	http://southpole.se
			http://southpoleconsulting.com

---------------------------------------------------------------------

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)  The toolchain can be obtained from openrisc.net.  Instructions for building
a toolchain can be found at:

http://openrisc.net/toolchain-build.html

2) or1ksim (optional)

or1ksim is the architectural simulator which will allow you to actually run
your OpenRISC Linux kernel if you don't have an OpenRISC processor at hand.

	git clone git://openrisc.net/jonas/or1ksim-svn

	cd or1ksim
	./configure --prefix=$OPENRISC_PREFIX
	make
	make install

3)  Linux kernel

Build the kernel as usual

	make ARCH=openrisc defconfig
	make ARCH=openrisc

4)  Run in architectural simulator

Grab the or1ksim platform configuration file (from the or1ksim source) and
together with your freshly built vmlinux, run your kernel with the following
incantation:

	sim -f arch/openrisc/or1ksim.cfg vmlinux

---------------------------------------------------------------------

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