Re: [beagleboard] Re: ENC28J60 Click on PocketBeagle

[Steven Keller]

It's been awhile since I have fired up my Pocket Beagle but I am looking at 
using it for a project that requires ethernet.  Did we ever get to the 
bottom of the MAC address getting set properly at bootup on either the ENC 
or the WIZ ethernet chips?

On Thursday, October 19, 2017 at 10:11:52 AM UTC-5, RobertCNelson wrote:
>
> On Thu, Oct 19, 2017 at 10:05 AM, Jason Kridner  > wrote: 
> > So can we configure the MAC on the ENC? The MAC address is fetched using 
> > am335x_evm.sh in /opt/scripts. Seems like it could be modified for if an 
> > adapter is detected in the kernel. 
>
> Yeah, that's my current thinking.. 
>
> > Aside, u-boot configures the on-board MII because the code was difficult 
> to 
> > cut out. 
>
> Regards, 
>
> -- 
> Robert Nelson 
> https://rcn-ee.com/ 
>

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Re: [beagleboard] BeagleBone Black shortage

[Graham]

Mouser has BBB  600+ in stock
  BB Wireless 3000+ in stock

--- Graham



On Thursday, February 1, 2018 at 8:48:58 AM UTC-6, RobertCNelson wrote:
>
> On Thu, Feb 1, 2018 at 8:42 AM,   
> wrote: 
> > Hi, 
> > 
> > for some months we can see a BBB-shortage which meanwhile becomes 
> dramatic. 
> > Farnell can ship BBBs earliest end of February (but only a few 
> thousands) 
> > and the prices have risen from ~50 Euro to more than 90 Euro at some 
> > distributors. 
> > 
> > Anybody an idea what's going on here? Has the BBB reached the end of 
> it's 
> > life? 
>
> 16 left at DigiKey. 
>
>
> https://www.digikey.com/product-detail/en/ghi-electronics-llc/BBB01-SC-505/BBB01-SC-505-ND/6210999
>  
>
> The BBB hasn't reached EOL. 
>
> More then likely it's related to the industry wide memory shortage. 
>
> Regards, 
>
> -- 
> Robert Nelson 
> https://rcn-ee.com/ 
>

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Re: [beagleboard] X15 - running xen hypervisor

[drhunter95]

Thanks for your comments. I have today tracked the paging problem down to a 
need to flush the TLBs before enabling the MMU. This was done via the 
TLBIALLH.
At the moment I've done in in xen head.s but maybe better to be done as 
part of u-boot as it seems to be an AM57xx uboot problem rather than a 
generic xen one.
Iain

On Wednesday, 31 January 2018 22:09:04 UTC, Hee-cheol Yang wrote:
>
> Hello I've tried similar job in exynos and ARM Fastmodel simulator, facing 
> similar issue.
>
> In my experiences, many issues are related to ARM TZ, not VE. Many 
> firmwares such as BL0 disable MMU functionality for hypervisor in Secure 
> world and jump to Normal world before  they pass the processor's control to 
> bootloader like uboot. 
> So you need to check whether the TZ settings are done correctly.
>
> Most SOC vendors provide such firmware in binary. For example, You can get 
> Xen for Exynos firmware in Xen wiki. Also, please check this repository :
>
> https://github.com/hcyang1012/ARM_Hypervisor
>
> I'm not sure TI supports such functionality. But it is worth to check it.
>
> Best regards
> Heecheol Yang
>
> 삼성 갤럭시 스마트폰에서 보냈습니다.
>
>
>  원본 이메일 
> 보낸 사람: drhun...@gmail.com  
> 날짜: 18/2/1 오전 6:44 (GMT+09:00) 
> 받은 사람: BeagleBoard  
> 제목: [beagleboard] X15 - running xen hypervisor 
>
> Hi, 
> I am trying to get xen hypervisor to run on an X15 but I have a prefetch 
> abort when the first instruction at a virtual address is fetched. The 
> paging tables appear to be being setup correctly.
>
> I am using u-boot v2017.01 to boot the xen image. u-boot by default is in 
> hypervisor mode with LPAE enabled which is as far as I can see what xen 
> needs.
>
> So, to my questions.
> - Has anyone tried this before?
> - does anyone know of a reason why after running u-boot the A15 would be 
> in hypervisor mode but have some side effect that means just writing to 
> HTTBR and HSCTLR is not sufficient to get the MMU functioning correctly?
>
> Thanks, Iain
>
> -- 
> For more options, visit http://beagleboard.org/discuss 
> 
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>  
> 
> .
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> 
> .
>

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Re: [beagleboard] BeagleBone Black shortage

[Robert Nelson]

On Thu, Feb 1, 2018 at 8:42 AM,   wrote:
> Hi,
>
> for some months we can see a BBB-shortage which meanwhile becomes dramatic.
> Farnell can ship BBBs earliest end of February (but only a few thousands)
> and the prices have risen from ~50 Euro to more than 90 Euro at some
> distributors.
>
> Anybody an idea what's going on here? Has the BBB reached the end of it's
> life?

16 left at DigiKey.

https://www.digikey.com/product-detail/en/ghi-electronics-llc/BBB01-SC-505/BBB01-SC-505-ND/6210999

The BBB hasn't reached EOL.

More then likely it's related to the industry wide memory shortage.

Regards,

-- 
Robert Nelson
https://rcn-ee.com/

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[beagleboard] BeagleBone Black shortage

[mike . maikaefer]

Hi,

for some months we can see a BBB-shortage which meanwhile becomes dramatic. 
Farnell can ship BBBs earliest end of February (but only a few thousands) 
and the prices have risen from ~50 Euro to more than 90 Euro at some 
distributors.

Anybody an idea what's going on here? Has the BBB reached the end of it's 
life?

Mike


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