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1  Hardware and U-Boot firmware / Hardware / Guruplug doesn't boot after reset on: November 02, 2013, 04:56:37 PM
Hi all,

I have here a Guruplug that doesn't boot any more. With the help of the JTAG-debugger, I have figured out that the processor doesn't jump to the U-Boot start address 0x00600000. Furthermore, it remains in an endless loop at address 0xffff0b2e:

Code:
> halt
target state: halted
target halted in Thumb state due to debug-request, current mode: Supervisor
cpsr: 0x400000f3 pc: 0xffff0b2e

But when I load the U-Boot over an OpenOCD-session and execute 'resume 0x00600000', the bootloader starts as expected. Now, my question: does somebody knows how to solve this problem? Thanks in advance.

Regards,

Luis
2  Hardware and U-Boot firmware / Hardware / Re: Guruplug: Datasheet of the Ethernet PHY? on: November 08, 2010, 01:32:17 PM
Hello sfzhi,

thanks for the hint, but what happens if an application, e.g. ifplugd, is running and reconfigures the interface when the link becomes active? Just for avoiding that *any* application changes the speed to 1000 I wanted to adapt the driver.


Regards,


Luis
3  Hardware and U-Boot firmware / Hardware / Guruplug: Datasheet of the Ethernet PHY? on: November 07, 2010, 03:58:14 PM
Hi all,

as you already know, the Guruplug gets stuck when the Ethernet ports are running with speed 1000 simultaneously with the Wifi card. As workaround I would like to disable the Gigabit speed support in the Ethernet PHY. Now, for checking if this is possible, I need the datasheet of the PHY (AFAIK, this is the M88E1121). Can somebody help me to find it? I've already searched by Marvell's website, but without success. Thanks in advance.


Regards,


Luis
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