Difference between revisions of "ARM Kernel"

Revision as of 05:26, 7 September 2015 (view source) Andysan (talk | contribs) (Updated aarch32 instructions with the new kernel location) ← Older edit		Revision as of 05:31, 7 September 2015 (view source) Andysan (talk | contribs) (Updated aarch64 instructions with new kernel location) Newer edit →
Line 35:		Line 35:
	==== 64 bit kernel (AArch64) ====		==== 64 bit kernel (AArch64) ====
−	These are instructions to generate a 32-bit ARM Linux binary.	+	These are instructions to generate a 64-bit ARM Linux binary.
		+
		+	To checkout the aarch64 kernel, execute the following command:
		+	<pre>
		+	git clone https://github.com/gem5/linux-arm64-gem5.git
		+	</pre>
		+
		+	The repository contains a tag per gem5 kernel release. Check the [https://github.com/gem5/linux-arm64-gem5/tags GitHub page] for a list of release tags. To checkout a tag, execute the following in the repository:
		+	<pre>
		+	git checkout -b TAGNAME
		+	</pre>
		+
	<pre>		<pre>
−	wget "http://www.linux-arm.org/git?p=linux-aarch64-gem5.git;a=snapshot;h=20140821;sf=tgz" -O 20140821-gem5_aarch64.tar.gz
−	tar zxf 20140821-gem5_aarch64.tar.gz
−	cd linux-aarch64-gem5-20140821/
	make ARCH=arm64 CROSS_COMPILE=aarch64-none-elf- gem5_defconfig		make ARCH=arm64 CROSS_COMPILE=aarch64-none-elf- gem5_defconfig
	make ARCH=arm64 CROSS_COMPILE=aarch64-none-elf- -j4		make ARCH=arm64 CROSS_COMPILE=aarch64-none-elf- -j4
−	mv vmlinux vmlinux.arm64.20140821
	</pre>		</pre>
	Testing the just built kernel:		Testing the just built kernel:
	<pre>		<pre>
−	% ./build/ARM/gem5.opt configs/example/fs.py --kernel=/tmp/linux-aarch64-gem5-20140821/vmlinux.arm64.20140821 --machine-type=VExpress_EMM64 \	+	% ./build/ARM/gem5.opt configs/example/fs.py --kernel=/tmp/linux-arm64-gem5/vmlinux --machine-type=VExpress_EMM64 \
−	--dtb-file=/tmp/linux-aarch64-gem5-20140821/arch/arm64/boot/dts/aarch64_gem5_server.dtb --disk-image=linaro-minimal-armv8.img	+	--dtb-file=/tmp/linux-arm64-gem5/arch/arm64/boot/dts/aarch64_gem5_server.dtb --disk-image=linaro-minimal-armv8.img
	</pre>		</pre>
−
−
−	===== Known working tags =====
−	{|
−	| Latest tag:
−	|<pre> 20140821</pre>
−	|}
	=== Mobile/Android Configuration  ===		=== Mobile/Android Configuration  ===
	Coming soon!		Coming soon!

---

Revision as of 05:31, 7 September 2015

This page contains instructions for building up-to-date kernels for gem5 running on ARM.

Linux command-line Configurations

These instructions are for running headless systems. That is a more "server" style system where there is no frame-buffer. The description has been created using the latest known-working tag in the repositories linked below, however the tables in each section list previous tags that are known to work. To built the kernels on an x86 host you'll need ARM cross compilers. If you're running a reasonably new version of ubuntu you can get a AArch32 (32-bit compiler) and AArch64 compiler by installing them from apt:

apt-get install  gcc-arm-linux-gnueabihf gcc-aarch64-linux-gnu

If you can't use these pre-made compilers the next easiest way to obtain the required compilers from Linaro.

Depending on the exact source of your cross compilers, the compiler names used below will required small changes.

32 bit kernel (AArch32)

These are instructions to generate a 32-bit ARM Linux binary.

To checkout the aarch32 kernel, execute the following command:

git clone https://github.com/gem5/linux-arm-gem5.git

The repository contains a tag per gem5 kernel release. Check the GitHub page for a list of release tags. To checkout a tag, execute the following in the repository:

git checkout -b TAGNAME

To compile the kernel, execute the following commands in the repository:

make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- vexpress_gem5_server_defconfig
make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- -j4

Testing the just built kernel:

% ./build/ARM/gem5.opt configs/example/fs.py  --kernel=/tmp/linux-arm-gem5/vmlinux \
   --machine-type=VExpress_EMM --dtb-file=/tmp/linux-arm-gem5/arch/arm/boot/dts/vexpress-v2p-ca15-tc1-gem5.dtb 

64 bit kernel (AArch64)

These are instructions to generate a 64-bit ARM Linux binary.

To checkout the aarch64 kernel, execute the following command:

git clone https://github.com/gem5/linux-arm64-gem5.git

The repository contains a tag per gem5 kernel release. Check the GitHub page for a list of release tags. To checkout a tag, execute the following in the repository:

git checkout -b TAGNAME

make ARCH=arm64 CROSS_COMPILE=aarch64-none-elf- gem5_defconfig
make ARCH=arm64 CROSS_COMPILE=aarch64-none-elf- -j4

Testing the just built kernel:

% ./build/ARM/gem5.opt configs/example/fs.py --kernel=/tmp/linux-arm64-gem5/vmlinux --machine-type=VExpress_EMM64 \
    --dtb-file=/tmp/linux-arm64-gem5/arch/arm64/boot/dts/aarch64_gem5_server.dtb --disk-image=linaro-minimal-armv8.img

Mobile/Android Configuration

Coming soon!