Indra, I still don't have a clue as to what you really want to do. The terms you're using are rather vague, it would be very helpful if you could describe what you intend to do in more practical terms, as in:
- I want to port Android to run on a stock Linux distribution (won't happen without kernel changes) - I want to run the Android system on a stock QEMU (won't happen for lack of proper HW support) - I want to look at the source code and modify it and run my modifications (you can already do that from the open-source tree, after a build, just type "emulator" to launch your new system image) etc... On Tue, Feb 17, 2009 at 10:14 AM, indra dutt <indrad...@gmail.com> wrote: > Hi David, > > Thanks for your notes. Definitely that clarifies a lots of things. > It means we can not build emulator the way I was taking it, but still I am > interested in putting the things together. > Do you think that can be done? If that is so, what procedures do I have to > follow? > Thanks for all your help!! > > > On Tue, Feb 17, 2009 at 1:34 PM, David Turner <di...@android.com> wrote: > >> I fear you don't understand much how Android works, but I'll try to give a >> few hints: >> >> Android requires its own kernel, because it includes a few drivers that >> are specific to the platform (e.g. the Binder driver used to implement >> inter-process communication) or specific configuration settings. You thus >> can't run Android properly on a stock Linux kernel, even one compiled for >> ARM. For the record, Android currently uses 2.6.27 and there are chances >> that trying to use 2.6.24 is not going to work at all, even if you try to >> integrate Android-specific changes into it. >> >> The Android kernel sources are available from android.kernel.org. This >> includes a virtual platform named "goldfish" corresponding to an ARM-based >> virtual machine that can be run in the Android emulator, which is a >> derivative of QEMU that includes goldfish hardware emulation. In other words >> you cannot use a stock QEMU to run this kernel because it doesn't include >> the necessary hw support. >> >> Apart from that, the SDK contains the emulator plus some files in the >> tools/lib/images directory that are: >> >> - kernel-qemu: a prebuilt image of the Android kernel built for the >> goldfish platform (ARM-based) >> - ramdisk.img: the ramdisk image used to boot the system (which includes >> Android-specific /init and config files) >> - system.img: a YAFFS2 image mounted as / when the emulated system starts >> - userdata.img: another YAFFS2 image mounted as /data when the emulated >> system starts. >> >> Actually, system.img and userdata.img are not mounted directly, they are >> copied into either a temporary file or one in ~/.android/userdata-qemu.img >> when the emulator starts up, so should only be considered as initial version >> of the corresponding filesystems. >> >> These already contain an ARM-based Android system, including an ARM-based >> Dalvik. >> >> You can download the Android SDK from this page: >> http://developer.android.com/sdk/1.1_r1/index.html >> >> The emulator sources are available here too: >> http://code.google.com/p/android/downloads/list >> (note: the emulator in the 1.1 SDK is the same one than in the 1.0r2 SDK) >> >> The sources of most of the Android platform (i.e. everything that has been >> open-sourced) are available from: source.android.com >> >> I still don't understand what you mean by reverse-engineering, but so be >> it. >> >> Hope this helps >> >> On Tue, Feb 17, 2009 at 7:35 AM, indra dutt <indrad...@gmail.com> wrote: >> >>> Ok. perhaps let me put it like, Suppose I do not have android emulator >>> and I want to make that, >>> We know on Qemu there is Linux 2.6.23 and on top of that there are >>> android images and Goldfish FS, then there is Dalvik VM ported. >>> Does that make sense? >>> Any help?? >>> >>> On Tue, Feb 17, 2009 at 11:01 AM, Avtar Singh <s.av...@gmail.com> wrote: >>> >>>> >>>> > On my windows environment, I am installing 2.6.24 kernel, and on that >>>> I plan >>>> > to port Middleware ( Android file-system, ARM file-simulation), on >>>> then >>>> > Dalvik VM, finally I wish to run any android application on that. >>>> > I am sure you now have clue what I intend to do. >>>> Absolutely no clue. >>>> >>>> > I am planning to make my >>>> > own android emulator and to play with it later. >>>> > I am seeking help on that. >>>> Do you plan to use/build on QEMU source or not? Have you tried >>>> installing Android source code and looking at its emulator code? >>>> >>>> >>>> >>> >>> >>> -- >>> Thanks >>> -Indra >>> >>> >>> >>> >> >> >> > > > -- > Thanks > -Indra > > > > --~--~---------~--~----~------------~-------~--~----~ unsubscribe: android-porting+unsubscr...@googlegroups.com website: http://groups.google.com/group/android-porting -~----------~----~----~----~------~----~------~--~---
