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FrankBennett - 06 Jun 2007

My AVR32 Build Notes:

• ATNGW100 Network Gateway Kit Links:
  • AVR32 Development Boards
    • Atmel ATSTK1000 Kit
    • Atmel ATNGW100 Kit
    • NGW100 (avrfreaks)
    • NGWLCD my design
  • Setup -First Steps
  • Atmel AVR32 - Tools & Software
    • Atmel Tools - Beta
    • Binutil Patches
  • u-boot for AVR32
  • Kernel & Drivers
    • Patches and Release Notes
    • Archives
    • kernel debug
    • avr32-gdb, proxy ubuntu Fiesty
  • Building Cross Tool-chain - hard way
    • www.atmel/no -tar file - easy way - works
      • make menuconfig;make
    • svn co svn://uclibc.org/trunk/buildroot (20670 Broken)
    • --- to get: /usr/local/bin/avr32-linux-gcc, etc
  • Flash support
    • Firmware Upgrade
    • avr32program
    • avrdude
    • MTD Utils
      • Denx MTD info
  • [[https://avr32linux.org/twiki/bin/view/Main/LinuxApplications] Userland (Applications)]]
    • NFS for AVR32
    • busybox-1.5.1 - cross-compiles after:
      • export CROSS_COMPILE=avr32-linux-
      • make install to target? How? Where?

I'm up (minicom 115200 8N1)

~ # uname -a
Linux ngw.example.net 2.6.18-atngw #1 Fri Apr 27 13:45:58 CEST 2007 avr32 unknown
~ # ls
bin      etc      linuxrc  mnt      sys      usr      x
config   home     list     proc     tmp      var
dev      lib      media    sbin     uImage   www
~ # df
Filesystem           1k-blocks      Used Available Use% Mounted on
/dev/root                 8000      6572      1428  82% /
dev                      15468         0     15468   0% /dev
tmp                      15468         0     15468   0% /tmp
run                      15468         0     15468   0% /var/run
samba                    15468         0     15468   0% /var/lib/samba
log                      15468        12     15456   0% /var/log
/dev/mtdblock3            8448      8180       268  97% /usr
/dev/mmcblk0p1          246912       576    246336   0% /x
~ # lsmod
Module                  Size  Used by    Not tainted
atmel_mci               7808  0
mmc_block               4712  2
mmc_core               15056  2 atmel_mci,mmc_block
vfat                    8288  1
fat                    36668  1 vfat

Need to be sure I have a backup image before I putz with the Network setup.

My Previous Embedded Project Methods

• Power PC - MPC5200, Linux-2.4.25
• Cross_tool set - Denx - Embedded Linux Development Kit (ELDK)
  • ppc-linux-gcc, etc.
  • x86 server
    • cross_tools
    • tftp
    • NFS server
    • subversion
    • gedit for non-vi folks
• u-boot (/dev/mtd0)
  • JTAG programmed (BDI2000) via tftp
  • env shared with Linux
• kernel (/dev/mtd1)
  • u-boot programmed via tftp
• rootfs - user space (/dev/mtd2)
  • NFS mounted for application/driver development (BIG)
    • application developed without reboot
    • drivers initially modules
  • target rootfs
    • used denmkrootfs script (mostly mkdir, cp) to copy BIG NFS fs to small rootfs
    • jffs2 small rootfs -> image
    • ftp image to target
    • linux cp image /dev/mtd2
    • change u-boot env, reboot
  • applications
    • Embedded web appliance
      • Configure Wizard
      • mini-http (boa didn't support authenication)
    • busybox
    • Data Acquisition
    • Floating Point Flow calculations
    • Legacy LCD, 5 button user I/F
    • Posix Threads, shm
• app info (/dev/mtd3)
  • mounted to rootfs
  • application: open, read, write, close
  • error log & config data, ftp access
• env (/dev/mtd4)
  • shared between u-boot & linux
  • setenv, printenv
  • IP address, netmask, etc

T2 Build Adventure

• LinuxDevices T2 Intro
• T2 home page
• T2 Online Howto Book
• svn co http://svn.exactcode.de/t2/trunk t2-trunk
• working in /opt/avr32/svn/t2-trunk
  • svn st to see whatś new or changed
• needed, fairly new, packages on build machine
  • autoconf, automake, make
  • ncurses
  • curl
  • bison, flex
  • makeinfo (texinfo)
• ./scripts/Config
  • select Generic embedded, avr32, cross build
  • annoying how the config window goes away, then comes back!
• ./scripts/Download -required
• ./scripts/Build-Target
  • cross-tools - built
  • Building filesystem/squashfs-tools [3.2 7.0-trunk] trouble
    • did a - ./scripts/Emerge-Pkg libz
    • fixed the build ( missing libz dependency? )
• ./scripts/Build-Target ....
• T2 currently set up for full system local or cross build, embedded little support, no:
  • u-boot
  • busybox
• I like buildroot best so far (more below)

Atmel git repos:

git clone git://www.atmel.no/~hskinnemoen/linux/kernel/avr32.git

works to clone a local copy of the kernel

git clone git://www.atmel.no/~hskinnemoen/linux/u-boot/avr32.git

works to clone a local copy of u-boot

BSP-CD build-linux-environment.sh Notes

• build_u-boot/ avr32-makefile-modifications.patch:
  • was +CROSS_COMPILE = avr32-
  • sb +CROSS_COMPILE = avr32-linux-
  • and might be good idea to wrap with
    • ifndef CROSS_COMPILE
  • this fixes build-uboot
• build_flash_upgrade - broke!
• what rebuild u-boot again?...woof !
• build_uclibc - broke!
• build_kernel - broke!
• Forget this script

buildroot - part of uclibc project

• BuildRoot website
• trying: revision 18803
• partial avr32 support, active : svn co svn://uclibc.org/trunk/buildroot
  • no board selection yet
  • need config sub-menu for u-boot, linux kernel (make menuconfig)
• like:
  • Configuration menu is responsive & doesn't go away for each selection
  • downloads selected tool version, only if it hasn't been download before
  • applies patches to supported tool versions
• make menuconfig - select :
  • Target Arch (avr32)
  • GNU target suffix (linux) ??
  • Toolchain Options -> like how you can select tool versions :
    • Linux 2.6.20
    • uClinc 0.9.29
    • binutils 2.16.1-atmel.0.99.2
      • after changing toolchain/binutils/Config.in
      • adding atmel path toolchain/binutils/binutils.mk
    • worked !
  • toolchain/gcc - tried to add gcc 4.0.2a
    • 4.0.2/ has a bunch of patches
    • the gcc-4.0.2-atmel patch is relative to 4.0.2 also
    • need to get gcc-4.0.2 from gcc, but the patch from atmel
  • bottom line - merging patches, for different architectures is complicated
  • buildroot approach has patches in svn distribution
  • I hate working with patches...wonder if git solves this arch/revision/branch problem
  • Atmel or an avr32 interest group need to have a way of an auto checkout & build process
    • or have a complete set of patched tool versions available via wget

buildroot-avr32 (Atmel's Haavard's work)

yes, a promising automatic build script similar to DENX ELDK

https://avr32linux.org/twiki/pub/Main/HaavardSkinnemoen/buildroot-avr32.tar.gz (the patch file has an older date than the file??)

$ tar zvtf buildroot-avr32.tar.gz : produces funny paths:

   drwxrwxrwx git/git           0 2007-04-16 09:27:09 buildrootdocs/
   drwxrwxrwx git/git           0 2007-04-16 09:27:09 buildrootpackage/
   drwxrwxrwx git/git           0 2007-04-16 09:27:09 buildroottarget/

looks like a git repo?

By hand I did some mv re-org to get

• /opt/avr32/buildroot
• /opt/avr32/buildroot/docs
• /opt/avr32/buildroot/package
• etc

unset LD_LIBRARY_PATH

make menuconfig

select avr32

script required an upgrade to Local Host

GNU Make 3.81

make dies

    **** BFD does not support target avr32-unknown-linux-uclibc.
    **** Look in bfd/config.bfd for supported targets.
    make[2]: *** [configure-bfd] Error 1
    make[2]: Leaving directory `/opt/avr32/buildroot/toolchain_build_avr32/binutils-2.16.91.0.7-build'
    make[1]: *** [all] Error 2
    make[1]: Leaving directory `/opt/avr32/buildroot/toolchain_build_avr32/binutils-2.16.91.0.7-build'
    make: **** [/opt/avr32/buildroot/toolchain_build_avr32/binutils-2.16.91.0.7-build/binutils/objdump] Error 2