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This is a major change in our platform configuration. At the moment the VExpress_GEM5_V1 and VExpress_GEM5_V2 platforms both instantiate an HDLcd device. As the presence of the device can slow down host performances when the software stack is aware of its presence, we have historically been providing an entry in the hdlcd DTB node to "hide" the entry from the DTB parser: status = "disable"; This default entry in the hdlcd node will in fact prevent the driver from bringing up the device. Unfortunately this is useful for experienced users only which are aware of this knob. In order to make things more transparent, and to avoid any confusion (e.g. having the hdlcd present in the config.ini, but not being able to program it in Linux) we are deprecating this solution; we are removing the HDLcd from the aforementioned platforms. Users not interested on simulating a display controller won't notice the difference. Users interested on including it, will now have to switch to a new VExpress_GEM5_Vx_HLCD platform which will enabled the HDLcd without any further tweaking required JIRA: https://gem5.atlassian.net/browse/GEM5-866 Change-Id: I4b1920efe764080115a57f52d8a3df2e6e2386a0 Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/38796 Tested-by: kokoro <noreply+kokoro@google.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Maintainer: Andreas Sandberg <andreas.sandberg@arm.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.