Difference between revisions of "Uboot for GuruPlug"

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You'll need an access to the serial console to achieve this, the JTAG module is OK.
 
You'll need an access to the serial console to achieve this, the JTAG module is OK.
  
* To connect to the bootloader, proceed exactly like for the Sheevaplug: http://wiki.amahi.org/index.php/Marvell_Plug_Computer
+
* To connect to the bootloader, proceed exactly like for the [[Marvell Plug Computer|Sheevaplug]
 
 
 
* Reset the GuruPlug.
 
* Reset the GuruPlug.
 
* At the terminal, press enter a couple of seconds after boot to prevent it from booting using the onboard flash (Ubuntu). You should end up with a prompt.
 
* At the terminal, press enter a couple of seconds after boot to prevent it from booting using the onboard flash (Ubuntu). You should end up with a prompt.

Revision as of 00:52, 8 September 2010

GuruPlug, GuruPlug Server Plus

Here's how to allow your GuruPlug to boot from a USB drive.
You'll need an access to the serial console to achieve this, the JTAG module is OK.

  • To connect to the bootloader, proceed exactly like for the [[Marvell Plug Computer|Sheevaplug]
  • Reset the GuruPlug.
  • At the terminal, press enter a couple of seconds after boot to prevent it from booting using the onboard flash (Ubuntu). You should end up with a prompt.
  • Some version of the GuruPlug have been shipped with a uboot that does not support Booting from USB, ESATA or SD-Card. If this is your case, then you have to upgrade uboot. To do this, the best howto I found is this : http://oinkzwurgl.org/guruplug_uboot
  • There are some commands you need to run to make it permanently boot from the USB port (NOTE: this step is only necessary once):
setenv mainlineLinux yes
setenv x_bootargs_root 'root=/dev/sdc1 rootdelay=10'
setenv x_bootcmd_kernel 'ext2load usb 1:1 0x6400000 /boot/uImage'
saveenv

While still under the bootloader , check your environment with printenv. It must look like this:

GuruPlug>> printenv
bootcmd=${x_bootcmd_usb}; ${x_bootcmd_kernel}; setenv bootargs ${x_bootargs} ${x_bootargs_root}; bootm 0x6400000;
bootdelay=3
baudrate=115200
x_bootcmd_usb=usb start
ethact=egiga0
x_bootcmd_kernel=ext2load usb 1:1 0x6400000 /boot/uImage
arcNumber=2653
mainlineLinux=yes
x_bootargs_root=root=/dev/sdc1 rootwait
x_bootargs=console=ttyS0,115200
stdin=serial
stdout=serial
stderr=serial