Re: update to buildroot guide

Altera_Forum · ‎03-21-2006

Dear 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)

Altera_Forum · ‎03-22-2006

update again. it is kernel 2.6.16 now.

Altera_Forum · ‎03-22-2006

Awesome. Will try it soon.

Altera_Forum · ‎03-22-2006

update again. provide two new kernels, 2.6.15.6 is more stable, while 2.6.16 is under testing for nios2.

Altera_Forum · ‎03-23-2006

I have verified the altera pci host bridge driver, it is working well with kernel 2.6.16 .

Altera_Forum · ‎03-24-2006

I have tested kernel 2.6.16 on a altera 2C35 Nios2 dev board. The jtag uart, epcs mtd, cfi mtd , and smc91111 are working well.

Altera_Forum · ‎03-28-2006

the build script in build0322.zip has a bug at line# 18, it should be "patch -p1 ~/download/mx140apps.diff" . thanks to hootsmon, who pointed out this issue.

the new build0327.zip only to fix this.

CF drive tested with kernel 2.6.16 .

Altera_Forum · ‎03-28-2006

I have verified 2.6.16 with a modified opencores MAC driver and the usual others. Good stuff!

Altera_Forum · ‎03-29-2006

I got these 2 errors when compiling the new buildroot...

Problem 1:

/~/buildroot/toolchain_build_nios2/gcc-3.4.6-final/nios2-linux-uclibc/libstdc++-v3/include/ext/rope:939:18: macro "index" requires 2 arguments, but only 1 given

Problem 2:

In file included from /~/buildroot/toolchain_build_nios2/elf2flt/elf2flt.c:52:
/~/buildroot/toolchain_build_nios2/binutils-2.15-build/bfd/bfd.h:38:22: ansidecl.h: No such file or directory

I was able to workaround both problems, using this patch....

--- toolchain_build_nios2/gcc-3.4.6/libstdc++-v3/include/ext/rope       2006-03-29 10:06:26.000000000 +1000
+++ toolchain_build_nios2/gcc-3.4.6/libstdc++-v3/include/ext/rope       2006-03-29 10:06:26.000000000 +1000
68,72d67
< /* Fix potential name clash */
<#  ifdef index
<#    undef index
<#  endif
<
--- toolchain_build_nios2/elf2flt/Makefile      2006-03-29 10:06:26.000000000 +1000
+++ toolchain_build_nios2/elf2flt/Makefile      2006-03-29 10:03:59.000000000 +1000
@@ -11,7 +11,7 @@
 CPU = nios2
 TARGET = nios2-linux-uclibc
 CFLAGS = -g -O2
-INCLUDES = -I/home/andrew/buildroot/toolchain_build_nios2/binutils-2.15-build/bfd/
+INCLUDES = -I/home/andrew/buildroot/toolchain_build_nios2/binutils-2.15-build/bfd/ -I/home/andrew/buildroot/toolchain_build_nios2/binutils-2.15/include
 CPPFLAGS =
 LDFLAGS =
 LIBS = /home/andrew/buildroot/toolchain_build_nios2/binutils-2.15-build/bfd/libbfd.a /home/andrew/buildroot/toolchain_build_nios2/binutils-2.15-build/libiberty/libiberty.a

question: Does anybody else get these errors, or are they due to some quirk of my (Debian) platform?

Thx in advance

hootsmon

Altera_Forum · ‎03-29-2006

Ah, I wonder if my problem could be related to using GCC-3.4.6 to build the toolchain?

Altera_Forum · ‎03-29-2006

I am checking the build again. I wonder there are some updates in buildroot snapshot which break nios2 again.

Altera_Forum · ‎03-29-2006

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 · ‎03-29-2006

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 · ‎03-29-2006

Thanks hippo, I am trying it now.

Altera_Forum · ‎03-29-2006

updated to kernel 2.6.16.1

Altera_Forum · ‎03-29-2006

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 · ‎03-30-2006

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 · ‎03-30-2006

I 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.gif

Altera_Forum · ‎03-30-2006

--- 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 · ‎03-30-2006

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.

Altera_Forum · ‎03-30-2006

Thx hippo, this is good info