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The main applications are to run baremetal programs and initramfs Linux kernel. Before this patch, disks() calls in makeArmSystem would throw: IOError: Can't find file 'linux-aarch32-ael.img' on M5_PATH. In order to achieve this, this commit also removes the default hardcoded disk image basenames. For example, before this commit, running without a --disk-image in X86 would automatically search for an image with basename x86root.img in M5_PATH, which means we would either have to ignore any disk image error, or else running without disk images would fail. After this commit, you would have to pass --disk-image x86root.img to achieve the old behaviour. Change-Id: I0ae8c4b3b93d0074fd4fca0d5ed52181c50b6c04 Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/27867 Tested-by: Gem5 Cloud Project GCB service account <345032938727@cloudbuild.gserviceaccount.com> Tested-by: kokoro <noreply+kokoro@google.com> Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-by: Jason Lowe-Power <power.jg@gmail.com> Reviewed-by: Gabe Black <gabeblack@google.com> Maintainer: Jason Lowe-Power <power.jg@gmail.com>
This is the gem5 simulator. The main website can be found at http://www.gem5.org A good starting point is http://www.gem5.org/about, and for more information about building the simulator and getting started please see http://www.gem5.org/documentation and http://www.gem5.org/documentation/learning_gem5/introduction. To build gem5, you will need the following software: g++ or clang, Python (gem5 links in the Python interpreter), SCons, SWIG, zlib, m4, and lastly protobuf if you want trace capture and playback support. Please see http://www.gem5.org/documentation/general_docs/building for more details concerning the minimum versions of the aforementioned tools. Once you have all dependencies resolved, type 'scons build/<ARCH>/gem5.opt' where ARCH is one of ARM, NULL, MIPS, POWER, SPARC, or X86. This will build an optimized version of the gem5 binary (gem5.opt) for the the specified architecture. See http://www.gem5.org/documentation/general_docs/building for more details and options. The basic source release includes these subdirectories: - configs: example simulation configuration scripts - ext: less-common external packages needed to build gem5 - src: source code of the gem5 simulator - system: source for some optional system software for simulated systems - tests: regression tests - util: useful utility programs and files To run full-system simulations, you will need compiled system firmware (console and PALcode for Alpha), kernel binaries and one or more disk images. If you have questions, please send mail to gem5-users@gem5.org Enjoy using gem5 and please share your modifications and extensions.