ARMADA 370 - Kernel panic during boot

post at twien.net post at twien.net
Mon Sep 29 08:23:59 PDT 2014


Thanks, that made it!

Actually to change the Physical base address of the debug UART was 
actually a shot in the dark, because I got nothing out, and I just 
decided to give it a try.
To me this is somewhat confusing: I thought the physical address of 
those register were 0xd0000000 (according to the hardware specification) 
and that the U-boot remapped those to the virtual address 0xf1000000. 
Well, since it worked on another board with 0xd0000000 (ref. mail from 
Gregory), I assume this is not so simple, and that this may vary 
depending on how U-boot remaps the registers, or? I'm using the U-boot 
provided by Marvell.

I have to debug further though, because it stopped with the message 
bootconsole [...] disabled. I guess the problem is that the switch chip 
(88E6532) is not detected (in the U-boot OK though, as egiga0), and this 
is my only way out.... (SGMII->PHY)

So thanks for the help. I'll keep on with the debugging.
Tormod



On 2014-09-29 15:57, Thomas Petazzoni wrote:
> Hello,
> 
> On Mon, 29 Sep 2014 13:25:03 +0200, post at twien.net wrote:
> 
>> 	soc {
>> 		ranges = <MBUS_ID(0xf0, 0x01) 0 0xd0000000 0x100000
> 
> Are you really sure about the 0xd0000000 value here? Your earlyprintk
> works using CONFIG_DEBUG_MVEBU_UART_ALTERNATE=y according to
> your .config, which indicates that your internal registers are mapped 
> at
> 0xf1000000 and not at 0xd0000000 as your Device Tree indicates.
> 
> Can you change this line to:
> 
> 	ranges = <MBUS_ID(0xf0, 0x01) 0 0xf1000000 0x100000
> 
> And try again?
> 
> Thanks,
> 
> Thomas



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