qemu-e2k/docs/system/target-arm.rst

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docs/system: convert Texinfo documentation to rST Apart from targets.rst, which was written by hand, this is an automated conversion obtained with the following command: makeinfo --force -o - --docbook \ -D 'qemu_system_x86 QEMU_SYSTEM_X86_MACRO' \ -D 'qemu_system QEMU_SYSTEM_MACRO' \ $texi | pandoc -f docbook -t rst+smart | perl -e ' $/=undef; $_ = <>; s/^- − /- /gm; s/QEMU_SYSTEM_MACRO/|qemu_system|/g; s/QEMU_SYSTEM_X86_MACRO/|qemu_system_x86|/g; s/(?=::\n\n +\|qemu)/.. parsed-literal/g; s/:\n\n::$/::/gm; print' > $rst In addition, the following changes were made manually: - target-i386.rst and target-mips.rst: replace CPU model documentation with an include directive - monitor.rst: replace the command section with a comment - images.rst: add toctree - target-arm.rst: Replace use of :math: (which Sphinx complains about) with :sup:, and hide it behind |I2C| and |I2C| substitutions. Content that is not @included remains exclusive to qemu-doc.texi. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Tested-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 20200228153619.9906-20-peter.maydell@linaro.org Message-id: 20200226113034.6741-19-pbonzini@redhat.com [PMM: Fixed target-arm.rst use of :math:; remove out of date note about images.rst from commit message; fixed expansion of |qemu_system_x86|; use parsed-literal in invocation.rst when we want to use |qemu_system_x86|; fix incorrect subsection level for "OS requirements" in target-i386.rst; fix incorrect syntax for making links to other sections of the manual] Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-02-28 16:36:05 +01:00
.. _ARM-System-emulator:
Arm System emulator
docs/system: convert Texinfo documentation to rST Apart from targets.rst, which was written by hand, this is an automated conversion obtained with the following command: makeinfo --force -o - --docbook \ -D 'qemu_system_x86 QEMU_SYSTEM_X86_MACRO' \ -D 'qemu_system QEMU_SYSTEM_MACRO' \ $texi | pandoc -f docbook -t rst+smart | perl -e ' $/=undef; $_ = <>; s/^- − /- /gm; s/QEMU_SYSTEM_MACRO/|qemu_system|/g; s/QEMU_SYSTEM_X86_MACRO/|qemu_system_x86|/g; s/(?=::\n\n +\|qemu)/.. parsed-literal/g; s/:\n\n::$/::/gm; print' > $rst In addition, the following changes were made manually: - target-i386.rst and target-mips.rst: replace CPU model documentation with an include directive - monitor.rst: replace the command section with a comment - images.rst: add toctree - target-arm.rst: Replace use of :math: (which Sphinx complains about) with :sup:, and hide it behind |I2C| and |I2C| substitutions. Content that is not @included remains exclusive to qemu-doc.texi. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Tested-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 20200228153619.9906-20-peter.maydell@linaro.org Message-id: 20200226113034.6741-19-pbonzini@redhat.com [PMM: Fixed target-arm.rst use of :math:; remove out of date note about images.rst from commit message; fixed expansion of |qemu_system_x86|; use parsed-literal in invocation.rst when we want to use |qemu_system_x86|; fix incorrect subsection level for "OS requirements" in target-i386.rst; fix incorrect syntax for making links to other sections of the manual] Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-02-28 16:36:05 +01:00
-------------------
QEMU can emulate both 32-bit and 64-bit Arm CPUs. Use the
``qemu-system-aarch64`` executable to simulate a 64-bit Arm machine.
You can use either ``qemu-system-arm`` or ``qemu-system-aarch64``
to simulate a 32-bit Arm machine: in general, command lines that
work for ``qemu-system-arm`` will behave the same when used with
``qemu-system-aarch64``.
QEMU has generally good support for Arm guests. It has support for
nearly fifty different machines. The reason we support so many is that
Arm hardware is much more widely varying than x86 hardware. Arm CPUs
are generally built into "system-on-chip" (SoC) designs created by
many different companies with different devices, and these SoCs are
then built into machines which can vary still further even if they use
the same SoC. Even with fifty boards QEMU does not cover more than a
small fraction of the Arm hardware ecosystem.
The situation for 64-bit Arm is fairly similar, except that we don't
implement so many different machines.
As well as the more common "A-profile" CPUs (which have MMUs and will
run Linux) QEMU also supports "M-profile" CPUs such as the Cortex-M0,
Cortex-M4 and Cortex-M33 (which are microcontrollers used in very
embedded boards). For most boards the CPU type is fixed (matching what
the hardware has), so typically you don't need to specify the CPU type
by hand, except for special cases like the ``virt`` board.
Choosing a board model
======================
For QEMU's Arm system emulation, you must specify which board
model you want to use with the ``-M`` or ``--machine`` option;
there is no default.
Because Arm systems differ so much and in fundamental ways, typically
operating system or firmware images intended to run on one machine
will not run at all on any other. This is often surprising for new
users who are used to the x86 world where every system looks like a
standard PC. (Once the kernel has booted, most userspace software
cares much less about the detail of the hardware.)
If you already have a system image or a kernel that works on hardware
and you want to boot with QEMU, check whether QEMU lists that machine
in its ``-machine help`` output. If it is listed, then you can probably
use that board model. If it is not listed, then unfortunately your image
will almost certainly not boot on QEMU. (You might be able to
extract the filesystem and use that with a different kernel which
boots on a system that QEMU does emulate.)
If you don't care about reproducing the idiosyncrasies of a particular
bit of hardware, such as small amount of RAM, no PCI or other hard
disk, etc., and just want to run Linux, the best option is to use the
``virt`` board. This is a platform which doesn't correspond to any
real hardware and is designed for use in virtual machines. You'll
need to compile Linux with a suitable configuration for running on
the ``virt`` board. ``virt`` supports PCI, virtio, recent CPUs and
large amounts of RAM. It also supports 64-bit CPUs.
Board-specific documentation
============================
Unfortunately many of the Arm boards QEMU supports are currently
undocumented; you can get a complete list by running
``qemu-system-aarch64 --machine help``.
docs/system: Split target-arm.rst into sub-documents Currently the documentation for Arm system emulator targets is in a single target-arm.rst. This describes only some of the boards and often in a fairly abbreviated fashion. Restructure it so that each board has its own documentation file in the docs/system/arm/ subdirectory. This will hopefully encourage us to write board documentation that describes the board in detail, rather than a few brief paragraphs in a single long page. The table of contents should also help users to find the board they care about faster. Once the structure is in place we'll be able to move microvm.rst from the top-level docs/ directory. All the text from the old page is retained, except for the final paragraph ("A Linux 2.6 test image is available on the QEMU web site. More information is available in the QEMU mailing-list archive."), which is deleted. The git history shows this was originally added in reference to the integratorcp board (at that time the only Arm board that was supported), and has subsequently gradually been further and further separated from the integratorcp documentation by the insertion of other board documentation sections. It's extremely out of date and no longer accurate, since AFAICT there isn't an integratorcp kernel on the website any more; so better deleted than retained. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Niek Linnenbank <nieklinnenbank@gmail.com> Message-id: 20200309215818.2021-3-peter.maydell@linaro.org
2020-03-09 22:58:15 +01:00
..
This table of contents should be kept sorted alphabetically
by the title text of each file, which isn't the same ordering
as an alphabetical sort by filename.
docs/system: Split target-arm.rst into sub-documents Currently the documentation for Arm system emulator targets is in a single target-arm.rst. This describes only some of the boards and often in a fairly abbreviated fashion. Restructure it so that each board has its own documentation file in the docs/system/arm/ subdirectory. This will hopefully encourage us to write board documentation that describes the board in detail, rather than a few brief paragraphs in a single long page. The table of contents should also help users to find the board they care about faster. Once the structure is in place we'll be able to move microvm.rst from the top-level docs/ directory. All the text from the old page is retained, except for the final paragraph ("A Linux 2.6 test image is available on the QEMU web site. More information is available in the QEMU mailing-list archive."), which is deleted. The git history shows this was originally added in reference to the integratorcp board (at that time the only Arm board that was supported), and has subsequently gradually been further and further separated from the integratorcp documentation by the insertion of other board documentation sections. It's extremely out of date and no longer accurate, since AFAICT there isn't an integratorcp kernel on the website any more; so better deleted than retained. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Niek Linnenbank <nieklinnenbank@gmail.com> Message-id: 20200309215818.2021-3-peter.maydell@linaro.org
2020-03-09 22:58:15 +01:00
.. toctree::
:maxdepth: 1
docs/system: Split target-arm.rst into sub-documents Currently the documentation for Arm system emulator targets is in a single target-arm.rst. This describes only some of the boards and often in a fairly abbreviated fashion. Restructure it so that each board has its own documentation file in the docs/system/arm/ subdirectory. This will hopefully encourage us to write board documentation that describes the board in detail, rather than a few brief paragraphs in a single long page. The table of contents should also help users to find the board they care about faster. Once the structure is in place we'll be able to move microvm.rst from the top-level docs/ directory. All the text from the old page is retained, except for the final paragraph ("A Linux 2.6 test image is available on the QEMU web site. More information is available in the QEMU mailing-list archive."), which is deleted. The git history shows this was originally added in reference to the integratorcp board (at that time the only Arm board that was supported), and has subsequently gradually been further and further separated from the integratorcp documentation by the insertion of other board documentation sections. It's extremely out of date and no longer accurate, since AFAICT there isn't an integratorcp kernel on the website any more; so better deleted than retained. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Niek Linnenbank <nieklinnenbank@gmail.com> Message-id: 20200309215818.2021-3-peter.maydell@linaro.org
2020-03-09 22:58:15 +01:00
arm/integratorcp
arm/mps2
arm/musca
docs/system: Split target-arm.rst into sub-documents Currently the documentation for Arm system emulator targets is in a single target-arm.rst. This describes only some of the boards and often in a fairly abbreviated fashion. Restructure it so that each board has its own documentation file in the docs/system/arm/ subdirectory. This will hopefully encourage us to write board documentation that describes the board in detail, rather than a few brief paragraphs in a single long page. The table of contents should also help users to find the board they care about faster. Once the structure is in place we'll be able to move microvm.rst from the top-level docs/ directory. All the text from the old page is retained, except for the final paragraph ("A Linux 2.6 test image is available on the QEMU web site. More information is available in the QEMU mailing-list archive."), which is deleted. The git history shows this was originally added in reference to the integratorcp board (at that time the only Arm board that was supported), and has subsequently gradually been further and further separated from the integratorcp documentation by the insertion of other board documentation sections. It's extremely out of date and no longer accurate, since AFAICT there isn't an integratorcp kernel on the website any more; so better deleted than retained. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Niek Linnenbank <nieklinnenbank@gmail.com> Message-id: 20200309215818.2021-3-peter.maydell@linaro.org
2020-03-09 22:58:15 +01:00
arm/realview
arm/sbsa
arm/versatile
arm/vexpress
arm/aspeed
arm/sabrelite
arm/digic
docs/system: Split target-arm.rst into sub-documents Currently the documentation for Arm system emulator targets is in a single target-arm.rst. This describes only some of the boards and often in a fairly abbreviated fashion. Restructure it so that each board has its own documentation file in the docs/system/arm/ subdirectory. This will hopefully encourage us to write board documentation that describes the board in detail, rather than a few brief paragraphs in a single long page. The table of contents should also help users to find the board they care about faster. Once the structure is in place we'll be able to move microvm.rst from the top-level docs/ directory. All the text from the old page is retained, except for the final paragraph ("A Linux 2.6 test image is available on the QEMU web site. More information is available in the QEMU mailing-list archive."), which is deleted. The git history shows this was originally added in reference to the integratorcp board (at that time the only Arm board that was supported), and has subsequently gradually been further and further separated from the integratorcp documentation by the insertion of other board documentation sections. It's extremely out of date and no longer accurate, since AFAICT there isn't an integratorcp kernel on the website any more; so better deleted than retained. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Niek Linnenbank <nieklinnenbank@gmail.com> Message-id: 20200309215818.2021-3-peter.maydell@linaro.org
2020-03-09 22:58:15 +01:00
arm/musicpal
arm/gumstix
arm/nseries
arm/nuvoton
arm/orangepi
arm/palm
arm/raspi
arm/xscale
arm/collie
arm/sx1
arm/stellaris
arm/virt
arm/xlnx-versal-virt
Arm CPU features
================
.. toctree::
arm/cpu-features