I've got a board with an old VxWorks 6.5 boot loader loading an image over ftp. If I put a new image on ftp built for VxWroks 6.7 (or higher) should that work. My tests so far seem to indicate no. However, I don't yet trust that my new kernel's are good.
EDIT:
To troubleshoot I built a VxWorks 6.7 boot loader and made a new boot floppy. The first problem I have is that my VxWorks image is crashing somewhere in the board support package (BSP). I've not gotten to the part where I tweak the configuration to load it with a 6.5 boot loader. It looks like I'll be troubleshooting the BSP that came with the board for a while.
I know that a 6.5 Bootloader works just fine with a 6.7 VxWorks image.
However, you have to make sure that the settings for the vxWorks image match the settings for the bootloader. The main ones being:
RAM settings: RAM_HIGH/RAM_LOW, etc...
sysPhysMemTop(),
BOOTLINE address
Matching RAM configuration is important if you use the ED&R framework.
Related
I am working on vxworks 5.5.1 and Tornado 2.2.1 porting a BSP for an Intel atom board.
I have set the options (memory, console (serial) and other options) and produced a bootrom and vxworks image.
my development host is a 32-bit XP and I created a boot floppy image using mkboot a: bootrom
Then I used HDD raw copy to copy the image to a USB.
When I boot the atom board with the USB, all I see is the display "1.6+++++++++++++++++++++++++++++++++++++++++++++++++++++++".
Since I compiled serial code into the bootrom (and there is a Rs-232 on the board), I was expecting to see some output on the Tornado COM1 console running in my environment.
It does not look like the bootrom is talking to serial port on the board at all.
Does anyone have any clues on where to look?
Thanks,
RK
I am getting following error while running /tmp/jprofiler8/bin/jpenable
No suitable Java Virtual Machine could be found on your system.
The version of the JVM must be at least 1.6 and at most 1.7.
Please define INSTALL4J_JAVA_HOME to point to a suitable JVM.
You can also try to delete the JVM cache file
I have also set INSTALL4J_JAVA_HOME to point to suitable JVM.
Java version on my machine is 1.4.2.
Can anyone please suggest what might be wrong or missing?
Unfortunately you did not mention details about your environment, so I don't know which Linux distribution you use.
There are some options though:
install a current JRE alongside the installer for JProfiler
As you can't install or update Java, you could provide a JRE in a kind of "portable application" setup. Simply unzip the server jre Oracle provides or (if you are not on an x64 architecture) unzip the jdk you also can download from Oracle.
But if the code you want to profile is limited to your pre-installed Java 1.4 you will run into another problem, because as far as I know Java 1.5 is the minimum JProfiler expects
use a different machine for profiling
Unless your code depends heavily on the environment you run it in you can even take a Windows 8.1 machine and profile the code there. Code that is slow is slow on any operating system. Or make use of a different Linux computer.
I wonder by any chance is there a way to install vxworks on vdx86d(vdx6354)? I searched a lot on the net and did not find NO to this question, but no manual or help could be find by me. anybody did this before and know how to do it?
VxWorks certainly runs on PC architecture x86 targets; there is probably already a suitable 80486 BSP that will suit this board. You can search for a suitable BSP here. There is only one BSP explicitly listed for 486 targetted at VxWorks 5.4/Tornado 2.0 - so it is as antique as 486 architecture itself. VxWorks 6.9 however has a single unified BSP for x86 which will no doubt work with your board.
VxWorks is not "installed" as such in the same way as a GPOS such as Linux or Windows; rather you link your application with the VxWorks libraries to create an application image that runs directly on boot. How the bootstrap process works varies between architectures and hardware implementation, but as a generic PC architecture board, booting a VxWorks application on your board will be the same as any other PC target. As such what you need to look for are directions on booting VxWorks on PC architecture rather then being specific about your actual board.
On PC architecture you can boot from mass-storage, or from a network server. Booting via a network connection is the normal method during debug/development. A great deal of the information available is for older versions of VxWorks. However it seems that it is possible to boot VxWorks via a VxWorks specific bootstrap, or from a generic PC bootloader such a s U-Boot.
Ultimately Wind River Support is probably a good starting point.
I have Spectrum Digital evaluation board (evm816x).
I have the problem, when i'm trying to port vxWorks 6.9 to the TMS320DM8168(davinci).
I load u-boot to NAND, it starts, all okey. Then, I load vxWorks image with xds510 usb emulator. All okey, vxWorks works good. Then, i'm trying to start vxWorks from u-boot, its crashing through initialization process.
After a few experiments I came to conclusion that vxWorks start only after CPU reset.
What prevents loading vxWorks in CPU?
Thank you.
Generally VxWorks 6.x BSPs are not designed to work with U-Boot. You may encounter random crash using the U-Boot go/bootelf/bootvx command after loading the VxWorks kernel. The reasons behind this might be different, for example it might be due to disagreement with the physical memory address configured in U-Boot, or inconsistent cache/MMU state.
The latest VxWorks 7 supports U-Boot as the bootloader by default on ARM and PPC targets.
Patches are now in the mainstream of the U-Boot Git repo since U-Boot v2014.01 relesae.
There may be bootable and loadable vxworks images. You are probably run loadable image. That is the default option to build vxworks in workbench. That image expects some initialization to be done by bootloader (which is bootable vxworks that runs the "boottask", which in turn loads the vxworks image).
In short, try to build bootable/romable vxworks image and to load it. Otherwise load the bootloader (bootrom) image which will load your loadable vxworks image.
As i know java programs are able to run on any Operating System.
and there are JVM's for any kind of machines.
I need a JVM that runs on my PC stand alone, and not on my OS (windows or any thing else).
I mean a JVM that acts like a boot, instead of the OS boot
i searched for all versions of JVM on "www.java.com/en/download/manual.jsp", but i did not get the suitable JVM.
the following link helped me a little but that was not enough
http://java-virtual-machine.net/other.html#jvm
my PC CPU is AMD Athlon(tm) 64X2 Dual Core Processor 5200 + 2.69 GHz
any body can help me to find the suitable jvm version ?!
Sure, have a look at JRockit Virtual Edition. As I understand it it's basically a micro kernel especially tailored for the JRockit VM.
From this page:
Java without the OS: JRockit Virtual Edition (VE)
Am I the only one that's never heard of this before? The Oracle JRockit team is looking at eliminating the OS from the stack required to run Java. This product will be called JRockit VE (not out yet)
JavaOS
Good lucking getting hold of it, though, it's nothing more than a historical curiosity.
There are two JVMs that I am aware of, which have this property:
The Fiji WM: http://www.fiji-systems.com/index.html
According to http://rtjava.blogspot.com/2009/11/new-real-time-vm-was-born-fiji-vm.html it also runs on bare metal.
The next possibility is JNode: an open source operating system where most parts are written in Java (the rest in assembly): http://www.jnode.org/
JNode is still beta, though.
No.
There was an idea of making a machine that could run a JVM as an actual machine (non virtualized), similiar to LISP machines, but that idea never took off...
You need a host OS to run a JVM.
Googling "java real machine" might give you some interesting articles.
I've found two: one from 2004, talking about how such a machine could be built and another one, talking about how JVM runs as a real machine on hardware such as mobile devices.
Still, no dice with a plain PC.