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Before this commit, there were default magic DTB and kernel filenames for some platforms. This was inelegant and error prone, as it refered to out-of-tree files, and set defaults which users almost always want to customize with explicit command line options. One result of this is that a wrong exception could be thrown if --kernel was given but not --machine-type, since the default machine type VExpress_EMM had a default kernel, and the code would always search for the default filename even though --kernel was given: IOError: Can't find file 'vmlinux.aarch32.ll_20131205.0-gem5' on path. The defaults existed only for older machine types, and not for the usually recommended VExpress_GEM5_V1, which suggests that this deprecation should not affect many users. Change-Id: Ia49298304f658701ea0800bd79e08db404a655c3 Reviewed-on: https://gem5-review.googlesource.com/c/15898 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Jason Lowe-Power <jason@lowepower.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/Introduction, and for more information about building the simulator and getting started please see http://www.gem5.org/Documentation and http://www.gem5.org/Tutorials. 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/Dependencies 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 ALPHA, 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/Build_System for more details and options. With the simulator built, have a look at http://www.gem5.org/Running_gem5 for more information on how to use gem5. 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. Please see the gem5 download page for these items at http://www.gem5.org/Download If you have questions, please send mail to gem5-users@gem5.org Enjoy using gem5 and please share your modifications and extensions.