Re: is there a way to run the compiled arm on Nexus S ?
Matthias Lange <[email protected]>
| Newsgroups | gmane.comp.micro-kernel.l4.devel |
|---|---|
| Message-ID | <[email protected]> |
Hi, On 10/22/2014 12:01 AM, Adam Lackorzynski wrote: > Hi, > > On Tue Oct 21, 2014 at 18:10:46 +0200, cem akpolat wrote: >> I have compiled couple of days ago l4android for arm architecture, and now >> I want to boot it on Nexus S, however, I couldn't find a way to tun >> bootstrapLinuxAndroid.elf file on arm based architecture. I have already >> >> How could be l4android booted on the Nexus S? > > I do not have particular experience with the Nexus S in this regard. > Typically, when doing such work, a working UART and/or JTAG interface is > essential to have. To get access to those, given they are accessible on > the PCB, one has to solder some cables or do similar things. The UART > can also be exposed via the USB port, typically using some special cable > which triggers this mode. Given the Nexus S was built by Samsung the USB port seems promising. However, there is a third option using the audio jack [0]. > With a working JTAG connection and setup one > can load the image into the device and also debug it from there > including getting UART-like messages. Without JTAG, loading the image > might be tricky, and cumbersome. Flashing via Download/Recovery mode is > one option, or having a boot loader on the device that can do USB (such > as u-boot). Now when there's code running, some device-specific drivers > are necessary, such as input (buttons, touch) and display. You're lucky > when the boot loader left the display and framebuffer logic intact so > you can just use it already properly configured. If not, there's some > more work to do. And then it goes on... > > Using a dev-board is much more convenient here as it has far better > accessibility to debugging connectors and very likely a usable > boot-loader with regard to loading images (network, USB). Matthias. [0] http://www.accuvant.com/blog/building-a-nexus-4-uart-debug-cable -- Matthias Lange, [email protected], +49 - 351 - 41 88 86 14 Kernkonzept GmbH. Sitz: Dresden. Amtsgericht Dresden, HRB 31129. Geschäftsführer: Dr.-Ing. Michael Hohmuth _______________________________________________ l4-hackers mailing list [email protected] http://os.inf.tu-dresden.de/mailman/listinfo/l4-hackers