Honored ContributorDear all,
I have updated the buildroot guide with gcc3.4.6, kernel 2.6.15.6 and new elf2flt.ld, please check out, http://forum.niosforum.com/forum/index.php?showtopic=3174 (http://forum.niosforum.com/forum/index.php?showtopic=3174)
Honored ContributorThx 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~/buildroot/toolchain_build_nios2/elf2flt$ ./flthdr ~/linux-2.6.16/vmlinux
Cannot read header of /home/andrew/linux-2.6.16/vmlinuxPlease 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.Honored ContributorThanks hippo, I am trying it now.
Honored Contributorupdated to kernel 2.6.16.1
Honored ContributorJust 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.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 etcI have verified 2.6.16 (build0329) on EP2S60 board with SMC91111 driver.
Good job hippo http://forum.niosforum.com/work2/style_emoticons/<#EMO_DIR#>/biggrin.gifHonored Contributor$ nios2-linux-uclibc-flthdr ~/rootfs/bin/busybox ~/rootfs/bin/busybox
bash: nios2-linux-uclibc-flthdr: command not foundbtw, 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/vmlinuxalso, 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 installgreat.
The vmlinux and zImage are ELF. While the busybox , boa and other apps to run on uClinux are FLT. As for flthdr, you may trycd ~/buildroot
rm -rf toochain_build_nios2/elf2flt
makeThx hippo, this is good info
