View source for 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====
[http://www.howtogeek.com/howto/ubuntu/how-to-customize-your-ubuntu-kernel/ how-to-customize-your-ubuntu-kernel]
====Ubuntu 11.x====
[https://help.ubuntu.com/11.10/installation-guide/ia64/kernel-baking.html Customize kernel for 11.x]

<syntaxhighlight lang="bash">
# 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-

</syntaxhighlight>

=== Install OpenOCD ===
* Copy libftd2xx.so to your /usr/lib folder
* Create symlinks for the libftd2xx by using the following commands: 
<syntaxhighlight lang="bash">
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
</syntaxhighlight>
* 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 ==
# Power up target board and connect JTAG
# 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
# Start second terminal, use telnet to connect to OpenOCD daemon.
## telnet localhost 4444
##* you can stack the next commands
##**reset halt; load_image /tftpboot/u-boot_noboot.bin 0x5c010000; resume 0x5c010000
## reset halt 
## load_image /tftpboot/u-boot_noboot.bin 0x5c010000
## resume 0x5c010000
# Start third terminal
#* minicom
#** Use settings 38400 8N1
#* set ipaddr 10.0.0.23;set serverip 10.0.0.10;erase 1:0-2;tftp Telem-GW6/x-load.bin;cp.b a1000000 0 400;tftp Telem-GW6/u-boot.bin;cp.b a1000000 800 $(filesize);reset

== Reference material == 
*[http://voipac.com/downloads/jtag/doc/vpaclink-jtag.txt Installing OpenOCD]
*[http://www.howtogeek.com/howto/ubuntu/how-to-customize-your-ubuntu-kernel/ How to customize your Ubuntu kernel]