Bootloader (Boot Loader)?

Gene Smith gds at
Fri Oct 3 18:06:05 UTC 2008

Ed Sutter wrote:
> Gene,
> I have booted RTEMS apps with MicroMonitor.  This is a bootloader
> that runs on most of the common CPUs, has its own NOR-based flash
> file system (onto which you would install your RTEMS image), and
> has networking, and a lot of other features you can configure in if
> needed.  If interested, take a look at
> What CPU are you using?

Thanks, I will take a look at that. I am using ARM946.

> Ed Sutter
> Gene Smith wrote:
>> So far I have just been loading my RTEMS image to RAM via jtag and 
>> running with a debugger. I would like to burn the image to Flash, along 
>> with a boot loader of some sort, and have the loader copy the image to 
>> RAM and beginning running. This would be a fairly rudimentary boot 
>> loader just to get started.
>> Looking through the rtems archives I see some old references to Chris 
>> John's "My Right Boot" and "Eric Norum's boot loader". Otherwise I can't 
>> find these mentioned anywhere on RTEMS site (looked in ftp: contribs 
>> etc.) or web.
>> I also see mention of Till's CEXP loader. If I understand it, it loads 
>> random rtems applications. Not quite what I am looking for I don't think.
>> My board has no built-in boot loader, so I need to do something from 
>> scratch. Ideally, the boot loader would need to do more such as possibly 
>> help with f/w upgrade via network. I think this might require something 
>> like u-boot or redboot. I think u-boot supports RTEMS but have not seen 
>> it mentioned except on Erwin Rol's rtems/u-boot site and not updated 
>> since maybe 2003. I have seen mention also of boards running RTEMS that 
>> have built-in u-boot and how to deal with it, but not how to join u-boot 
>> and RTEMS yourself.
>> Just wondering what others are doing for a boot loader.
>> Thanks,
>> -gene

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