Hi John Thanks for that! ...and for all your help! I have looked at most of the docs now....the annoying part is you'll start off reading about A20-SOM and then find yourself in a "A20-OLinuXino_MICRO" 3.4 build document.
Thinking I should start a thread specific to the A20-SOM..... rather then continue hijacking this thread. Following Maxime's advice, I have focused on uboot and confirmed there is a problem with the network., so will play there until it's 100% and then look at booting mainline with a dtb. Bruce On Thu, Jun 26, 2014 at 1:33 PM, [email protected] <[email protected]> wrote: > Olimex has instructions up on how to build for this module... > > https://www.olimex.com/wiki/A20-SOM > > How to generate boot-able SD-card Debian Linux image for A20-OLinuXino? > > Follow our blog post with step by step instructions Note that > Linux-Sunxi Kernel is a work-in-progress, this means you can try the > current stage/sunxi-3.4 branch but if something is broken and doesn't > work just revert to the git tags we give in the blog and they should > work for sure > > Sunxi u-boot loader The linux-sunxi git page contains a lot of sources > for all Olimex Allwinner boards. > > On Thu, Jun 26, 2014 at 4:28 AM, bruce bushby <[email protected]> > wrote: > > > > Maxime: Hope I didn't sound sarcastic there, I know the enormous > > contributions yourself and Free-Electrons have made. Sometimes the only > way > > for us "non-devloper" types to help out is by sending pizza or in this > case > > some hardware. > > > > Paul: You and me both ....however I did some digging this morning and > found > > some handy links: > > https://www.power.org/documentation/epapr-version-1-1/ > > > > This link is a must read: > > http://www.devicetree.org/Device_Tree_Usage > > > > > > Also there is this tutorial (no idea if it's any good) > > http://xillybus.com/tutorials/device-tree-zynq-1 > > > > > > Bruce > > > > > > > > > > > > On Thu, Jun 26, 2014 at 1:28 AM, Paul Jones <[email protected]> > wrote: > >> > >> Hi Bruce, > >> > >> > >> > >> I’m just guessing here, but if you can find an A20 board that is similar > >> to the Olimex one you should be able to modify the DTS file so that the > pin > >> mapping is correct for your board. You will need the schematics to find > >> which output pins on the CPU are routed to which peripheral. > >> > >> > >> > >> If you find a good source for learning DTS files I’d like to see it – > They > >> are still a bit of a mystery to me as well. > >> > >> > >> > >> Cheers, > >> > >> Paul. > >> > >> > >> > >> From: [email protected] [mailto:[email protected] > ] > >> On Behalf Of bruce bushby > >> Sent: Thursday, 26 June 2014 8:34 AM > >> To: [email protected] > >> Subject: Re: [linux-sunxi] Re: Booting mainline on > >> a20-olinuxino/cubietruck > >> > >> > >> > >> > >> > >> Hi Maxime > >> > >> > >> > >> Nope... didn't think about damaging the board..... I have absolutely no > >> idea what I'm doing :) ...it's just a hobby and I figured the only way > to > >> learn is to try.....you really don't want to watch me connecting the > >> breadboard LOL > >> > >> > >> > >> I try and avoid constantly asking junior questions so tend to exhaust > all > >> sense before asking for help....progress is slow but I'm learning. Know > any > >> good books that explain how to write dts files? > >> > >> > >> > >> "....We're not ignoring it, we just don't have that hardware..." ..... > >> Would you like one? > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> On Wednesday, 25 June 2014 22:20:15 UTC+1, Maxime Ripard wrote: > >> > >> On Wed, Jun 25, 2014 at 09:37:59PM +0100, bruce bushby wrote: > >> > Doesn't help....which suggests I'm doing something fundamentally > wrong. > >> > > >> > bootargs=console=ttyS0,115200 loglevel=9 earlyprintk > >> > > >> > In my defconfig I have: > >> > CONFIG_PRINTK_TIME=y > >> > CONFIG_EARLY_PRINTK=y > >> > CONFIG_DEBUG_LL=y > >> > CONFIG_DEBUG_FS=y > >> > > >> > The board I'm using in A20-SOM-EVB ...which was only released in May > and > >> > is > >> > not yet supported ...hence all my issues with uboot (no network) and > >> > "dtb" > >> > > >> > Compiling uboot for "cubietruck" allows me to ping and tftp load my > >> > uImage....but it gets to Starting Kernel...... and thats it. I suspect > >> > thats because ttyS0 is not correctly defined in the dtb I'm using. > >> > >> You do realise you could physically damage your board doing so, right? > >> > >> Please, have an idea of what you are doing, ask for help before doing > >> anything stupid, or do nothing, but don't do that kind of thing. > >> > >> > I'll ask if anybody has started using these boards....can't imagine > the > >> > community will ignore them for long. Thanks again for all your help, > >> > much > >> > appreciated!!!! > >> > >> As you've seen, there's no support for this. We're not ignoring it, we > >> just don't have that hardware. > >> > >> So either you wait, or you learn how to do it properly and do so. But > >> just doing that kind of thing isn't going to work. > >> > >> Maxime > >> > >> -- > >> Maxime Ripard, Free Electrons > >> Embedded Linux, Kernel and Android engineering > >> http://free-electrons.com > >> > >> -- > >> You received this message because you are subscribed to the Google > Groups > >> "linux-sunxi" group. > >> To unsubscribe from this group and stop receiving emails from it, send > an > >> email to [email protected]. > >> > >> > >> For more options, visit https://groups.google.com/d/optout. > >> > >> -- > >> You received this message because you are subscribed to a topic in the > >> Google Groups "linux-sunxi" group. > >> To unsubscribe from this topic, visit > >> https://groups.google.com/d/topic/linux-sunxi/5mQHoyAjvJE/unsubscribe. > >> To unsubscribe from this group and all its topics, send an email to > >> [email protected]. > >> > >> For more options, visit https://groups.google.com/d/optout. > > > > > > -- > > You received this message because you are subscribed to the Google Groups > > "linux-sunxi" group. > > To unsubscribe from this group and stop receiving emails from it, send an > > email to [email protected]. > > For more options, visit https://groups.google.com/d/optout. > > > > -- > Jon Smirl > [email protected] > > -- > You received this message because you are subscribed to a topic in the > Google Groups "linux-sunxi" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/linux-sunxi/5mQHoyAjvJE/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. 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