Hi Adam,
Do you have any clues as to why I only get garbage printed out when I try to run one of the bootstrap programs?
I thought it might be because I need to use the generic-hosted.ld linker script packaged with arm-none-eabi, but since you said you think everything should work with arm-none-linux-gnueabi, I'm questioning my conclusion now. (I haven't gotten around to testing a build with arm-none-eabi and generic-hosted.ld yet.)
Thanks, -- Wesley Miaw wesley@wesman.net
On Sep 12, 2011, at 3:00 AM, l4-hackers-request@os.inf.tu-dresden.de wrote:
On Sun Sep 11, 2011 at 10:48:57 -0700, Wesley Miaw wrote:
On Sep 11, 2011, at 3:00 AM, l4-hackers-request@os.inf.tu-dresden.de wrote:
On Sat Sep 10, 2011 at 12:26:05 -0700, Wesley Miaw wrote:
I'm not getting any errors printed out on the console when I run the ELF or RAW bootstrap binaries. It just prints out a line of garbage (e.g. ? or other random characters). Then I have to hit the reset button. This is
You were mentioning a 'too many headers error' when compiling/linking with arm-none-linux-gnueabi which you seemed to not get with arm-none-eabi. I would like to understand what makes the difference in your setup and then see further.
Ah, I see. I don't know why I got that error originally when compiling L4, but I am no longer getting that error. Maybe I did something wrong (or remembering things incorrectly)--I see in the bootstrap linker script that it purposefully combines the data and bss sections with a comment that sounds like it is explicitly working around the problem of a regular linker script creating too many headers.
If I compile some other program I write myself to ELF, like a single file Hello World, using arm-none-linux-gnueabi then I get the too many headers error when the ARM Boot Manager tries to flash the ELF binary. Switching to arm-none-eabi and using the generic-hosted.ld linker script fixes this problem.
That's also the reason why bootstrap is generated into a single header, because there are loaders that can only do one unfortunately, like the one on this platform.