Tagged with tegra-toolkit - NVIDIA Developer Forums

Flashing L4T on cardhu dev tablet

madmaze — Wed, 28 Mar 2012 12:57:40 -0400

I have the latest version of the Linux for Tegra development kit,
I am stuck on flashing the dev tablet with the new kernel/bootloader.

The documentation says the following:

You must first put the target board into reset/recovery mode. Do so by first powering 
on the board and then holding the recovery button and pressing the reset button.

When i power on the tablet it announces:


...
Checking for RCK.. press key  in 5 sec to enter RCK
OS will cold boot in 10 seconds if no input is detected
Press  to select,  for selection move

(options are USB and Android)

if i press Vol- when the RCK message pops up it gives me a distorted screen with an android exclamation mark in it. Then no other input it possible, not even turning it off.

if i select to boot USB then it claims "Starting Fastboot USB download protocol"
If at this point I execute flash.sh it will hang after "Nvflash started"

any suggestions on what I could/should try?
Is there a way to get debug output from NVFLASH about where its stuck?

Thanks,

Matthias

Booting device from internal eMMC drive aka mmcblk0p5

PouryaShirazian1 — Tue, 15 May 2012 18:50:07 -0400

Sorry if my question is already posted somewhere in ther forum. I have successfully booted the device from a prepared USB drive and now want to flash the device to be able to boot from its internal eMMC memory drive. How can I do this properly?

The error that I receive is:

file not found: bootloader/system.img
failed executing command 2147483647 NvError 0x4
command failure: create failed
Failed to flash cardhu.

Thanks

Tegra Development Pack not working with SDK and ADT 18?

skip — Wed, 18 Apr 2012 20:18:26 -0400

Hello,

I have downloaded the Tegra Android Developer Pack 1.0r5, have tried out the NVIDIA samples and written my own applications created with the help of app_create.sh and its nv_event option and everything worked fine.

As an improved Android emulator has been announced recently, I updated the SDK tools and the ADT plugin to version 18. There was a crash at the end of the update process, so I uninstalled ADT with the Eclipse plugin manager and installed the new version.

Now all these things seem up-to-date and I can compile NVIDIA's and my NDK applications. But when I try to run them on my Tegra 3 tablet, I receive the "Unfortunately [app] has stopped" error message. Logcat gives me the error "Unable to resolve superclass of [app]", I suppose the mentioned superclass is NvEventQueueActivity then.

Google led me to solutions for similar problems due to changes in SDK and ADT version 17. This didn't help me though, because I'm not using JAR files and the projects only have a libs folder anyway.

My question is now: Is it a known problem that the Tegra Development Pack and all the applications using NVIDIA's event framework don't work with the new SDK and ADT versions? If so, what could I do to my make it all work again (except for downgrading the tools again)?

How install ICS/Honeycomb on Tegra 250 (Harmony)

eliofrancesconi — Mon, 16 Jan 2012 05:34:31 -0500

Hi all,
I'm struggling on searching in the documentation and forum, how install ICS on my tegra 250 evaluation board, but without success.

Is it possible to install it and how?

The only thing found in documentation is the image for the froyo version, is it the latest version supported or are there newer version supported?

Thank in advance for any hints.
Elio

Tegra 3 Tablet Camera API

MichaelD — Mon, 26 Mar 2012 03:39:57 -0400

Hi,

i am doing my master thesis with the Tegra 3 tablet development kit. I want to do real time image processing on the stereo camera the tablet is providing (calibration, stereo correspondence, ...).

The FCamPro example does something like that - it gives an OpenGL texture to a SurfaceView. Is there an existing API-function that allows me to get the current (stereo)frame and manipulate it with some algorithms and pass it on to an (GL)SurfaceView - like the onPreviewFrame() function does on the Android API?

Thanks,
Michael

About ICS and Harmony Source

phitch — Wed, 29 Feb 2012 22:28:57 -0500

So, a while back you posted this:

Hello Android Development Community

We do provide our Tegra kernel publically for our Tegra reference devices at http://nv-tegra.nvidia.com/gitweb/?p=linux-2.6.git. If you're looking for HAL components (ie drivers) or the kernel for a *specific* device it's up to the manufacturer to provide, as per the standard GPL license."

Andrew Edelsten

So, now I am going to call you out, I contacted LG about this, since you said they would have to release it. Well they reached out to you about releasing the source code, and today they got a response which they forwarded to me:

Dear Xxy

We are very sorry for that you keep waiting for a long time in advance.

Today we received reply from Nvidia.
I post their opinion regarding our question below. Please refer to below.
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
기본적으로 저희 GB 기반의 Kernel driver들은 이미 아래 site를 보시면 아시겠지만 Public 되었습니다.
If you refer to below public link, NVIDIA already committed TEGRA based kernel sources with various way and timely manner.
http://nv-tegra.nvidia.com/gitweb/

하여 TMUS G2X Kernel driver에 대해서는 NVIDIA 입장에서는 Source 공개를 막을 이유가 전혀 없습니다.
So, NVIDIA official stance to release GB based Linux kernel source can be committed to open source community under GPL terms & condition.

단 LGE는 TEGRA HAL이나 User space code들을 별도로 Source로 받으시는 경우가 있는데 이 부분은 GPL을 따르는 것이 아니기 때문에 공개를 하지 마셔야 합니다.
However, since TEGRA hardware adaptation layer and few user space codes in Android were not made based on GPL so it’s purely NV proprietary, it should not be opened to the public.
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

We are very sorry to say that we don’t have any obligation to release source code about TEGRA HAL and user space code from Nvidia.
As they mentioned their opinion, because It isn’t GPL.

If you have any suggestion, please let us know.

Thank you
Best regard.

So, you are making posts blaming the manufacturers for not releasing source code for ICS and your devices and then telling those same manufacturers "However, since TEGRA hardware adaptation layer and few user space codes in Android were not made based on GPL so it’s purely NV proprietary, it should not be opened to the public." Congratulations! Lucky for end users there are several newer quad core and even a few dual core chips that actually outperform the Tegra 3. I will not purchase another Nvidia device until you guys get this right.

Is it possible to use Tegra Devpack with a Tegra Tablet (for example, Asus TF101)?

slliucc — Fri, 02 Mar 2012 00:34:10 -0500

Currently it looks like Tegra Devpack software only works with Tegra Development Kits hardware. Is it possible to use it with a normal Tegra tablet such as Asus TF101 to develop software?

Android and Tegra: a good buy?

pnkpes — Fri, 17 Feb 2012 10:57:35 -0500

For me, definitely not.
I bought a LG 2X with Tegra 2 about a year ago and and NVidia does not release the kernel source for ICS. So many optimizations due to this operating system in LG 2X can not be exploited.
A high-end smartphones Tegra2 released just over a year ago is old just because they are released kernel source.
Why would anyone buy a new Tegra3 if not long after its release is not given more support?
Is this serious?
Dear sirs, you can give information to those who bought a smartphone with your processor?
Do not believe that we have the right?
Will release the source Tegra2 Harmony for ICS?

Delay in JNI debugging. Early breakpoints not hit unless ...

woutervd — Sun, 12 Feb 2012 07:31:40 -0500

Hi,

First, thanks for the awesome devpack and debugger. There are quite a few solutions available like ARM DS-5, Sequoyah and WinDGB but none of those worked well or at all for that matter.

Now I do have a problem with the debugger. I tried to debug the hello-jni sample, set some breakpoints and started debugging. The application ran, the debugger connected but no breakpoints (in the C code) were hit. Now I figured out that the breakpoints and some other debug data is send over to the gdbserver after the debugging connection is established and the application started running. So to work around this Issue I have set a breakpoints in java code (which thankfully works aside c breakpoints :D ) at System.loadLibrary("..."); Causing the application to halt there, giving the server the time to receive its data in order to break at the right spots.

Now it all works. My question: Will this be fixed somehow in the future? For example preventing the application from running before all the debug data is sent over?

The device I use is a HTC Hero running Cyanogenmod 6.2 since the debugger requires atleast froyo.

Thanks in advance,

Wouter

Missing perfhud libraries for non devkit devices

workless — Sun, 20 Nov 2011 10:07:13 -0500

Hi, I would like to run perfhud on my ASUS trasformer(bought just for this) (TF101) but i can't find perfhud libraries for android 3.2. I tried to mount system.img of the devkit but it doesn't work :( (it does work for 2.3 image).
Could you please provide perfhud libraries for each version of android?
or at least give information on how to mount 3.2 image? it's all i need, please.

Thanks for your time.

Tegra 3 Not Recognized by WMDC

bryanp — Wed, 25 Jan 2012 19:27:54 -0500

We're currently using a Tegra 3 Developer Kit on Windows 7 64-bit and are having issues getting it recognized by Windows Mobile Device Center. Because of this we're unable to run / test our Unreal Engine 3 game on the device since the engine relies on WMDC. We've installed the latest Tegra Developer Kit, Windows CE Embedded SDK, and the Windows Mobile Device Center. Upon plugging the device in, the machine recognizes it ( it shows up in Windows Explorer as well as under "Portable Devices" in Device Manager ), but WMDC fails to see it. Is there something else we need to do in order for the device to be properly recognized by WMDC? Thank!

NVIDIA Debug Manager for Android NDK issue

mighter — Thu, 12 Jan 2012 16:22:23 -0500

Development environment: Windows 7, cygwin, android NDK r7, Eclipse Indigo+CDT.
I have Android project, converted to C++ project.
I try to debug it using NVIDIA Debug Manager. I select Android NDK Application debug config.

Tried Acer Iconia Tab A500, and though not supported HTC Desire HD(2.3.5 no root), Galaxy Ace(2.3.3 root).
What I receive is console output:
GdbServerReceiver: gdbserver: permission denied

Accessing RS232 port on Ventana from new OS

kingst — Sat, 29 Oct 2011 00:02:19 -0400

Hello,

I am working on a new OS and I would like to get it to run on a Ventana board. I am having trouble getting the serial port to work. From what I can tell the RS232 port is connected to UARTD, which is 8520 compatible. Here is what my initialization code looks like, but nothing happens when I run it from fastboot (Note, I have been able to get Linux to run this way):

Any idea what I am doing wrong?

#define FCR (2<<2)
#define IER (1<<2)
#define DLL 0
#define DLH (1<<2)
#define LCR (3<<2)
#define MCR (4<<2)
#define TX 0
#define LCR_DLAB 0x80

.global _reset
_reset:
ldr r0, =0x70006300
/* 8n1 */
mov r1, #0x3
strb r1, [r0, #LCR]
/* interrupts off */
mov r1, #0
strb r1, [r0, #IER]
/* no fifo */
mov r1, #0
strb r1, [r0, #FCR]

/* 115200 baud rate, usbclk is 216000000 for ventana divisor = 0x75 */
ldrb r1, [r0, #LCR]
orr r1, r1, #LCR_DLAB
strb r1, [r0, #LCR]
mov r1, #0x75
strb r1, [r0, #DLL]
mov r1, #0x0
strb r1, [r0, #DLH]
mov r1, #3
strb r1, [r0, #LCR]

/* Send an 'A' */
mov r1, #0x41
strb r1, [r0, #TX]

Custom Kernel on Tegra 2/3

zperez — Fri, 02 Dec 2011 15:23:33 -0500

I'm currently developing some RIL (radio) libraries for my company for the Tegra 2 and 3. To develop for these devices I need a ttyUSB interface (that's how our dev boards talk to any devices we connect to). The kernel on the Tegra's has an option driver built in, but does not have the correct defined values to register our devices (drivers/serial/usb/option.c). I have the correct option driver built (both as a module and compiled into the kernel). The issue I am having is I cannot flash a custom kernel to the Tegra. I need a custom kernel to be able to develop the drivers for my companies devices, however, since there is 0 documentation on what configs are needed to properly build/flash a custom image to the Tegra, I've had to rely on some revere engineering and trial and error, all to no avail.

I have a much clearer understanding of how the Tegra works under the hood (i.e. how the hardware interfaces between everything, how the kernel loads on it, etc. etc. etc.) but since this is a closed platform, I have no way of being able to figure out exactly where/why/how to load my images and have the proper addresses read.

Long story short, NVidia, I need more documentation on how to work with your devices. I don't care about proprietary code or anything like that, I have the boot.img you have given, I've stripped out the kernel and ram disk image and edited it to my needs, but cannot put that repacked boot.img on to the device ..

ANY help in getting a custom kernel loaded onto the Tegra would be of great help. If anyone has similar issues or been able to do this, I will give what info I can to help you in helping me (no proprietary info from my company involved in building custom images so full disclosure is ok).

Thanks in advance to anyone who can help with this

Is NVIDIA complying with its Open Source obligations?

Core Memory — Fri, 02 Dec 2011 11:54:01 -0500

On xdadevelopers, I read NVIDIA's announcement about making Tegra binary code and drivers, etc. available to independent developers but no where is the release of source code (un-obfuscated human readable code) stated. Although developers appreciate binary code, it isn't enough. The concept of Open Source is openness so that there's a level playing field of opportunity for every developer which I still don't observe with NVIDIA. Is NVIDIA complying with its Open Source obligations?"

No Tegra 2 driver source code = No independent developer support for NVIDIA Tegra 2, 3, etc.

Core Memory — Fri, 25 Nov 2011 14:15:27 -0500

Over at xdadevelopers.com, developers and consumers are complaining about the lack of support for the Tegra 2 from NVIDIA which is preventing the development of kernels to upgrade phones such as the LG Optimus 2X and G2X which phone manufacturers, such as LG, appear to have abandoned support for. NVIDIA must provide the information and tools necessary for independent developers or they will lose that too and, when consumers realize that they bought phones which wouldn't be updated and also don't use the full capabilities of the NVIDIA GPU, they will stop buying phones with NVIDIA chips inside. I own a G2X which LG appears to have abandoned, they were forced to provide Android 2.3 in the U.S.A. but, apparently, that's it for updates to anything newer. NVIDIA, you can't depend on phone manufacturers to support your technology, you have to do it yourself by openly providing the source code to your drivers, including the hardware accelleration code, or you will be left behind in the dust by Texas Instruments and other companys which do supply what independent developers need to fully develop software. Beware NVIDIA, you could be headed into oblivion as RIM appears to be and as already happened with NORTEL which was so big and successful it didn't think it could fail.

Running Tegra2 samples on Android Emulator - Invalid APK?

Spaddlewit — Sat, 26 Nov 2011 14:32:35 -0500

I installed the Tegra2 Android Development Pack.
When I try to 'Run As->Android Application' for the Tegra2 samples, I get this:

[2011-11-26 12:57:58 - es2_water] Uploading es2_water.apk onto device 'emulator-5554'
[2011-11-26 12:57:58 - es2_water] Installing es2_water.apk...
[2011-11-26 12:58:12 - es2_water] Installation failed due to invalid APK file!
[2011-11-26 12:58:12 - es2_water] Please check logcat output for more details.
[2011-11-26 12:58:13 - es2_water] Launch canceled!

What am I doing wrong?

Tegra 2 Source Code

Ts0cha0tik — Tue, 22 Nov 2011 13:28:26 -0500

Are you ever going to release the Tegra 2 Source code so developers can actually work with the supporting android devices? Its because of this that I refuse to buy any more Nvidia related devices

ICS and Tegra2

giveen — Thu, 17 Nov 2011 14:10:26 -0500

Can you give us a hint on what kernel/drivers/build info for the Tegra 2 chip for Ice Cream(android 4.0), I'm sure its similar to the Tegra3 build.

Smartphone tegra

Malkawi — Sun, 20 Nov 2011 05:51:31 -0500

Hi i am new to this forum hope you are all doing well
My question
Is there a comPatible touch screen for the tegra 250?
And can I connect a gm862 gsm GPRS to it(using USB) will it recognize it?
I am working on a project for making a smartphone

Tegra 2/3 and Unity3d

KazeEnji — Fri, 11 Nov 2011 12:32:23 -0500

I've taken a gander at the forums here and nothing pops out immediately to me.

Just looking for anyone who's had experience with Unity3d and Tegra development. Any special coding you can/should use? How far can one push the polygon counts because it's Tegra? Can you make a game where in the single package you can expand graphical capabilities if it's on Tegra vs. a non-Tegra device? (Something like switching up to DirectX 11 allows you more graphic options on a computer)

I'm just starting out designing a game in Unity3d and I would really like to take advantage of the Tegra platform properly so anyone with info on this subject would be of great help.

Thank you,
-Kaze-

Tegra 250 camera API

romangpu — Mon, 24 Oct 2011 18:04:23 -0400

Hi,

could you please provide me with samples how can I access camera on NVIDIA Tegra 250 tablet from Java.

I installed Tegra Android Development Pack for Win from http://developer.nvidia.com/tegra-android-development-pack. I use Java from Eclipse via JNI and C++ OpenCV. I compiled some samples from Android SDK. I successfully flashed green triangle sample but was not able to run HelloJni sample. Anyway I could not find samples how to manage Tegra tablet camera (C++ API). I would like to have camera output in my android application.

Thanks,

Roman

Simple frame buffer access

kingst — Fri, 28 Oct 2011 11:27:04 -0400

Hello,

I am working on a new operating system and I want to print some simple text to the screen early in the boot sequence to help debug (similar to fastboot that also prints some simple text and graphics). I am using a Ventana dev kit and I tried writing pixel values to the video memory area, but it did not appear to do anything. Does anyone have any suggestions?

Thanks!

--Sam

How is manage the Tegra 250 ROM?

DR I — Fri, 23 Sep 2011 05:10:27 -0400

Hi everyone,

I'm currently developping a custom firmware for Tegra 250 DevKit.

To do that I'm writting from scratch a bare-metal program for the board which intended to do the following stuff:

1°/- Reset CPU Settings (MMU disabling, Second Core disabling, and so on).
2°/- Set interruption table.
3°/- Set Reset vector table.
4°/- Retrieve CPUID from CP0 bit3-15.
5°/- Store CPUID string on RAM.

But, before starting to do something, I've got to know if there's any ROM on the SoC which already perform those steps?

I mean, my purpose is to write a bare-metal which will do the board initialization and check of the board.

I want to replace the fastboot and Nvidia's bootloader by my own program, I've the nvflash utility and I know how to flash the current bootloader by U-Boot or any other.

Many thanks in advance for the helpers.

OpenGL ES 2.0; Segmentation fault;

GreenTroll — Wed, 19 Oct 2011 10:01:21 -0400

Hi Guys!

I got "Segmentation fault" when using any function from libGLESv2.so.
Any ideas why did it happen?

libGLESv2.so from NDK was downloaded from here.
device tegra2.

Thanks

Cannot Boot Linux on Ventana

orestisp — Thu, 13 Oct 2011 21:41:10 -0400

Hi.

I've been trying to setup Ubuntu on a Ventana board.
I am following every step in this tutorial:
http://developer.nvidia.com/content/linux-tegra-release-12-alpha-1-released
I flash the device but when it tries to boot it says:
Unable to query partition UBN
Unable to query partition CAC
Unable to query partition MSC

I have tried configuring the configuration file by changing stuff
according to the config file that is used for Android.
Using this version of the config file, I have managed to overcome this
"cannot query partition" error. But even in this case after choosing
the ubuntu logo to boot, it just goes black and after some seconds
just restarts. I have also tried to set it up so that it will boot
through an SD card or a USB but it also does not seem to work.

I don't care if it boots the kernel from a usb or an sdcard or whatever.
I just want to run Ubuntu on this thing because I need to run performance
sensitive C / arm assembly code in its multicore ARM CPU. I hope I don't
have to create an Android app and embed my low level experiments in there.
That would be a LOT waste of my time.

Has anyone managed to get this thing working?
I just want the board to boot a linux OS other than Android.
Even if it is just a kernel, a terminal and a compiler, it suits me.
I just want to overcome these Android locks that basically limit you
from running anything else than freaking Java and Android packages.

Thanks,
Orestis

Math on the shaders; How to do; Tegra2

GreenTroll — Fri, 14 Oct 2011 03:37:56 -0400

Hi guys!

Could you help me, please.
I need to use shaders for direct math computing. For example, my function gets array with numbers and has to return arithmetic mean.
How can I do it? Any examples with shaders and math?

All I've found out it descriptions how use high level function from library OpenGL. But I need to realized low level math function to increase performance already existed "C" soft.
Nothing 3D object, textures and something like that!

Thanks

Tegra 250 CPU Specification

KarimAllah — Sat, 08 Oct 2011 03:38:13 -0400

I'm looking for any avaialable in-depth programmers-oriented specification for Tegra 250. I want to write some bare-metal code for Tegra250 and I need to understand the detialed specs of the CPU. Things like the boot sequence, initialization process, memory-mapping of different subsystems, and etc.
Is there any published/open specification for Tegra250 ?

Thanks in advance.

failed to boot custom kernel with fastboot on Tegra 250 ventana board

haohui — Sat, 08 Oct 2011 10:43:33 -0400

Hi,

I want to know whether fastboot is usable on Tegra 250 ventana board.

It seems that my Tegra 250 ventana board supports fastboot protocol off-the-shelf. When I choose the USB icon during booting, it says:

"Starting Fastboot USB download protocol."

And fastboot found the device:

$~/Downloads/fastboot-linux devices
???????????? fastboot

When I use fastboot to boot the stock Honeycomb 3.2 kernel downloaded from NVIDIA sites, it reports the process is completed, although the board never boots:

# I extracted boot.img-{kernel,ramdisk.gz} from boot.img coming from the stock rom.
$~/Downloads/fastboot-linux boot boot.img-kernel boot.img-ramdisk.gz
creating boot image...
creating boot image - 3184640 bytes
downloading 'boot.img'...
OKAY [ 0.446s]
booting...
OKAY [ 0.000s]
finished. total time: 0.446s

The board stays the same, and fastboot can still detect the device:

$~/Downloads/fastboot-linux devices
???????????? fastboot

I appreciate if you could tell me where I did wrong and how to use fastboot correctly.

Thanks.