Difference between revisions of "Uboot for GuruPlug"
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m (moved Uboot+for+guruplug to Uboot for GuruPlug) |
m (added how to read usb partition) |
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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 | + | * 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. | ||
Line 12: | Line 11: | ||
* There are some commands you need to run to make it permanently boot from the USB port ('''NOTE:''' this step is only necessary once): | * 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 mainlineLinux yes | ||
− | setenv | + | setenv x_bootargs_root 'root=/dev/sdc1 rootdelay=10' |
− | setenv | + | setenv x_bootcmd_kernel 'ext2load usb 1:1 0x6400000 /boot/uImage' |
saveenv | saveenv | ||
+ | |||
+ | To determine 1:1 in the command above | ||
+ | |||
+ | usb start | ||
+ | usb part | ||
+ | ## Unknown partition table | ||
+ | ## Unknown partition table | ||
+ | Partition Map for USB device 2 -- Partition Type: DOS | ||
+ | Partition Start Sector Num Sectors Type | ||
+ | 1 63 14586957 b | ||
+ | 2 14587020 1060290 82 | ||
+ | |||
+ | here you have device 2 and you want to boot Partition 1 so use 2:1 (as opposed to 1:1 in the command above). | ||
While still under the bootloader , check your environment with ''printenv''. | While still under the bootloader , check your environment with ''printenv''. | ||
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arcNumber=2653 | arcNumber=2653 | ||
mainlineLinux=yes | mainlineLinux=yes | ||
− | x_bootargs_root=root=/dev/ | + | x_bootargs_root=root=/dev/sdc1 rootwait |
x_bootargs=console=ttyS0,115200 | x_bootargs=console=ttyS0,115200 | ||
stdin=serial | stdin=serial | ||
stdout=serial | stdout=serial | ||
stderr=serial | stderr=serial |
Latest revision as of 03:23, 25 February 2011
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 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
To determine 1:1 in the command above
usb start usb part ## Unknown partition table ## Unknown partition table Partition Map for USB device 2 -- Partition Type: DOS Partition Start Sector Num Sectors Type 1 63 14586957 b 2 14587020 1060290 82
here you have device 2 and you want to boot Partition 1 so use 2:1 (as opposed to 1:1 in the command above).
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