Flashing PXA27M bootloader

System set up

• tftp server
• konsole/ssherminator - allows you to open as many terminals in one window as you need
  • During this procedure you're gonna need at least three
• Media:Libftd2xx0.4.13.tar.gz
• Media:Openocd 1.0.1383 i386.tar.gz
• Media:Voipac-pxa27x xloader.tar.gz
• Media:Voipac-pxa27x-u-boot nostart.tar
• Media:Voipac-pxa27x u-boot original.tar

Linux kernel

You need to enable usbfs in your kernel.

Enable CONFIG_USB_DEVICEFS option in kernel options

Ubuntu 10.x

how-to-customize-your-ubuntu-kernel

Ubuntu 11.x

Customize kernel for 11.x

# Download kernel source
sudo apt-get install linux-source-3.0.0
cd ~
mkdir kernel-usb-fs
cd kernel-usb-fs
tar xjf /usr/src/linux-source-3.0.0.tar.bz2
cd linux-source-3.0.0/
# Enable CONFIG_USB_DEVICEFS
make xconfig

# after making changes to kernel it's time to compile
make-kpkg clean
fakeroot make-kpkg -j6 --initrd --revision=1.0 kernel_image

# install new kernel, edit filename to what was generated
sudo dpkg -i ../linux-image-

Install OpenOCD

• Copy libftd2xx.so to your /usr/lib folder
• Create symlinks for the libftd2xx by using the following commands:

sudo cp libftd2xx.so.0.4.13 /usr/lib/
cd /usr/lib
ln -s libftd2xx.so.0.4.13 libftd2xx.so.0.4
ln -s libftd2xx.so.0.4 libftd2xx.so.0
ln -s libftd2xx.so.0 libftd2xx.so

• tar xzfv openocd_1.0.1383_i386.tar.gz
• sudo dpkg -i Openocd_1.0.1383_i386.deb
  • When trying to install this on a 64bit system you need to --force-architecture or you'll get an error.
    • sudo dpkg --force-architecture -i Openocd_1.0.1383_i386.deb

Using OpenOCD

1. Power up target board and connect JTAG
2. Start the first terminal and write
   • openocd -f vpac270.cfg
     • Error: unable to open ftdi device: 18
       • OpenOCD needs usbfs
       • sudo mount -t usbfs none /proc/bus/usb
     • Error: unable to open ftdi device: 2
       • You need root privileges
       • log in as root or
       • sudo openocd -f vpac270.cfg
3. Start second terminal, use telnet to connect to OpenOCD daemon.
   1. telnet localhost 4444
      • you can stack the next commands
        • reset halt; load_image /tftpboot/u-boot_noboot.bin 0x5c010000; resume 0x5c010000
   2. reset halt
   3. load_image /tftpboot/u-boot_noboot.bin 0x5c010000
   4. resume 0x5c010000
4. Start third terminal
   • minicom
     • Use settings 38400 8N1
   • set ipaddr 10.0.0.22;set serverip 10.0.0.16;erase 1:0-2;tftp x-load.bin;cp.b a1000000 0 400;tftp u-boot.bin;cp.b a1000000 800 $(filesize);reset

Reference material

• Installing OpenOCD
• How to customize your Ubuntu kernel