Hi, I am trying to run Android on Gem5 for my project and I needed help in getting the system to run.
I am running the gem5-stable release and am using the ARM architecture. I have set M5_PATH to point to the gem5-stable/system directory Here are the different approaches I tried: 1. I am trying to create a custom Android image file by following the instructions given on the website. I downloaded the Android source code and patched it with Arm specific files as given in http://www.linux-arm.org/LinuxKernel/LinuxAndroidPlatform for kernel version 2.6.35 I successfully compiled the patched Android ICS source code and created an image file using the gem5 image creation utility and transfered the Android file system on it. I am using the pre-built kernel image given on the site. When I try to run the simulation I get kernel panic message and the system does not boot: VFS: Mounted root (ext2 filesystem) on device 8:1. [ 2.254005] VFS: Mounted root (ext2 filesystem) on device 8:1. <6>Freeing init memory: 148K [ 2.254019] Freeing init memory: 148K /bin/sh: earlyprintk: No such file or directory <0>Kernel panic - not syncing: Attempted to kill init! [ 2.268655] Kernel panic - not syncing: Attempted to kill init! [<c003899c>] (unwind_backtrace+0x0/0xe4) from [<c02f2a08>] (panic+0x50/0xd0) [ 2.268666] [<c003899c>] (unwind_backtrace+0x0/0xe4) from [<c02f2a08>] (panic+0x50/0xd0) [<c02f2a08>] (panic+0x50/0xd0) from [<c004efe4>] (do_exit+0x68/0x620) [ 2.268679] [<c02f2a08>] (panic+0x50/0xd0) from [<c004efe4>] (do_exit+0x68/0x620) [<c004efe4>] (do_exit+0x68/0x620) from [<c004f640>] (do_group_exit+0xa4/0xd4) [ 2.268691] [<c004efe4>] (do_exit+0x68/0x620) from [<c004f640>] (do_group_exit+0xa4/0xd4) [<c004f640>] (do_group_exit+0xa4/0xd4) from [<c004f680>] (sys_exit_group+0x10/0x18) [ 2.268704] [<c004f640>] (do_group_exit+0xa4/0xd4) from [<c004f680>] (sys_exit_group+0x10/0x18) [<c004f680>] (sys_exit_group+0x10/0x18) from [<c00326c0>] (ret_fast_syscall+0x0/0x30) [ 2.268718] [<c004f680>] (sys_exit_group+0x10/0x18) from [<c00326c0>] (ret_fast_syscall+0x0/0x30) Am I missing something in the build process? I compared my init.rc file with the one from the clean ICS image file and there were no differences. 2. I tried to run the simulation using the pre-built images and I was able to boot the Gingerbread bbench, gingerbread clean and Ics bbench images using the pre-compiled kernel image. This does not solve the purpose as I want to use my own Android image file. 3. I downloaded and compiled the armdroid kernel source code and tried to run the simulation. After compilation, I get the file "uImage" in arch/arm/boot folder. I renamed uImage to vmlinux.arm.custom and used it in the simulation. The simulation exits immediately with the message "Could not load kernel file". I have placed the kernel image in gem5-stable/system/binaries. Am I using the correct kernel image file? It would be really helpful if someone could point me in the correct direction so that I can get the system to run. Kindly let me know in case any additional information is required. Thanks and Regards, Abhinav Kannan
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