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  • Altera_Forum's avatar
    Altera_Forum
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    20 years ago

    Thx hippo. Here's another wrinkle (probably unrelated).... 

    $ nios2-linux-uclibc-flthdr ~/rootfs/bin/busybox ~/rootfs/bin/busybox
bash: nios2-linux-uclibc-flthdr: command not found

    BTW, I do have a binary called 'flthdr' but it reports problems... 

    ~/buildroot/toolchain_build_nios2/elf2flt$ ./flthdr ~/linux-2.6.16/vmlinux
Cannot read header of /home/andrew/linux-2.6.16/vmlinux

    Also, I am getting BAD MAGIC errors when busybox tries to start.

    Any ideas? How do I build nios2-linux-uclibc-flthdr ?
  • Altera_Forum's avatar
    Altera_Forum
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    20 years ago

    Please check build0329.zip,

    the latest snapshot have some problems, but I don't have time to check them.

    we shall freeze the snapshot to 20060320, the last known good snapshot.
  • Altera_Forum's avatar
    Altera_Forum
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    20 years ago

    Just checked build0329, and buildroot compiled smoothly for me.

    I noticed that nios2linux-1.4.zip was missing (ie. not in build0329.zip), however it is available in previous zipfiles.

    Here's what happens when I try to boot 2.6.16 kernel. I *think* busybox has ELF header not flat. 

    Uncompressing Linux... Ok, booting the kernel.
Linux version 2.6.16 (andrew@ce00205) (gcc version 3.4.6)# 2 PREEMPT Wed Mar 29
16:57:28 EST 2006
uClinux/Nios II
Altera Nios II support (C) 2004 Microtronix Datacom Ltd.
Built 1 zonelists
Kernel command line:
PID hash table entries: 128 (order: 7, 2048 bytes)
Dentry cache hash table entries: 4096 (order: 2, 16384 bytes)
Inode-cache hash table entries: 2048 (order: 1, 8192 bytes)
Memory available: 14988k/16384k RAM, 0k/0k ROM (742k kernel code, 482k data)
Mount-cache hash table entries: 512
io scheduler noop registered
io scheduler deadline registered (default)
Serial: JTAG UART driver $Revision: 1.4 $
ttyJ0 at MMIO 0x821208b0 (irq = 1) is a jtag_uart
Freeing unused kernel memory: 408k freed (0x10c2000 - 0x1127000)
BINFMT_FLAT: bad header magic
BINFMT_FLAT: bad header magic
Failed to execute /init
BINFMT_FLAT: bad header magic
BINFMT_FLAT: bad header magic
BINFMT_FLAT: bad header magic
BINFMT_FLAT: bad header magic
Kernel panic - not syncing: No init found.  Try passing init= option to kernel.

    Any ideas?
  • Altera_Forum's avatar
    Altera_Forum
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    20 years ago

    Yes, check it with "nios2-linux-uclibc-flthdr ~/rootfs/bin/busybox" .

    rebuild busybox with, 

    cd ~/buildroot
make -C build_nios2/busybox clean
make#  prepare root fs
rm -rf ~/rootfs
cp -a ~/buildroot/build_nios2/root/* ~/rootfs
cd ~/rootfs#  remove include and lib to save space#  the dev nodes are generated via ~/download/rootfs_list
rm -rf dev usr/include usr/lib#  you may use this instead of the one from buildroot
cp ~/download/inittab etc

    nios2linux-1.4.zip was not in previous build.zip, it was too big.

    Please find it here,

    http://forum.niosforum.com/downloads/1_4/nios2linux-1.4.zip (http://forum.niosforum.com/downloads/1_4/nios2linux-1.4.zip)
  • Altera_Forum's avatar
    Altera_Forum
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    20 years ago

    --- Quote Start ---

    originally posted by hootsmon@Mar 29 2006, 12:50 PM

    thx hippo. here's another wrinkle (probably unrelated).... 

    $ nios2-linux-uclibc-flthdr ~/rootfs/bin/busybox ~/rootfs/bin/busybox
bash: nios2-linux-uclibc-flthdr: command not found

    btw, i do have a binary called 'flthdr' but it reports problems... 

    ~/buildroot/toolchain_build_nios2/elf2flt$ ./flthdr ~/linux-2.6.16/vmlinux
cannot read header of /home/andrew/linux-2.6.16/vmlinux

    also, i am getting bad magic errors when busybox tries to start.

    any ideas? how do i build nios2-linux-uclibc-flthdr ?

    <div align='right'><{post_snapback}> (index.php?act=findpost&pid=13880)</div>

    --- Quote End ---

    In answer to my own question, I rebuilt nios2-linux-uclibc-flthdr as follows: 

    cd ~/buildroot/toolchain_build_nios2/elf2flt
make clean
make
make install

    Having installed flthdr utility, kernel boots and busybox runs properly now.
  • Altera_Forum's avatar
    Altera_Forum
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    20 years ago

    great.

    The vmlinux and zImage are ELF.

    While the busybox , boa and other apps to run on uClinux are FLT.

    As for flthdr, you may try 

    cd ~/buildroot
rm -rf toochain_build_nios2/elf2flt
make

    You can safely remove stuff in toolchain_build_nios2 and build_nios2 .

    a top level make will rebuild them.