problems with my first root filesystem
rayl at mail.com
Sun Sep 23 02:05:02 CEST 2007
thanks for your reply, i'm just now getting a free moment to play with my moko
On Monday 10 September 2007 02:02, John Lee wrote:
> You might want to test your toolchain first? If the kernel cannot
> execute the binary inside rootfs it will hang just like this.
> cd moko/build
> . ../setup-env
> bitbake helloworld-image
i've tried that, and indeed i get the "Hello world!" message on the display,
although not on the serial console.
> Oh by the way, have you put
> BUILD_ARCH = "x86_64" inside your local.conf?
yes, i did. i also tried binutils 2.18 and 2.17.50, both with identical
i did some more digging with the debug board. by single stepping using the
JTAG telnet interface, i can see that the kernel is in a loop trying to send
SIGSEGV to the process, but notices that it's the init process and therefore
doesn't actually send it. it therefore hangs in a loop trying to deliver the
my guess is that ld.so is segfaulting for some reason, since any static
executable i pass to the kernel with init= seems to work okay, but even hello
world will hang if it is dynamically linked. i'm not sure how to get at the
user stack trace from kernel space to confirm that, however...
any ideas on how to proceed? is there an easy flag i can pass to force the
rootfs to be statically linked?
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