On Tue, Aug 11, 2020 at 9:51 PM Pablo Rath <[email protected]> wrote: > > On Tue, Aug 11, 2020 at 12:47:51PM +0100, Luke Kenneth Casson Leighton wrote: > > On Tue, Aug 11, 2020 at 12:35 PM Pablo Rath <[email protected]> wrote: > > > > > On Tue, Aug 11, 2020 at 11:37:41AM +0100, Luke Kenneth Casson Leighton > > > wrote: > > > > > Ok. I have tried that now. Pressed "2" while applying power over USB-OTG > > > but an Allwinner USB FEL device is not found with 'sunxi-fel version'. > > > Also tried to boot with my known working µSD-Card but there is no output > > > on UART. > > > > hm ok there is one more "trick" - actually uploading (and executing) > > the spl bootloader followed by u-boot and everything else > > https://linux-sunxi.org/FEL/USBBoot#Boot_the_system_over_USB > > > > the old version, fel-boot, you had to first "run" then "execute". the > > newer version (sunxi-fel) looks like it does run-and-execute. > > > > the first binary (the spl bootloader) fits into the 16k SRAM and until > > that's executed (and it initialises the PLL and DDR3) there's flat-out > > no chance of uploading anything at all into the upper areas of memory > > (0x42000000) which are in the DDR3 RAM area. > > > > i have in the past set up a linux kernel to convert the USB-OTG into a > > usbserial "gadget", and also a usbnet-compatible g_ether "gadget". > > the first way was successful in showing early console logs, and the > > second was enough to get a USB eth0 that i could ssh in over. > > So just to make sure, your advice now is to work with the standalone > Computer Card and get usbserial or g_ether "gadget" working?
to check that there's actually "something" working, yes. > I have used (but not set up) g_ether "gadget" with ssh before and I have > already > read about usbserial (seems well documented on linux-sunxi wiki) so I > think I will manage. you need the "gadget" serial kernel config enabled, and usbserial as well, they need to be built-in, you can't use them as "module options" (.ko) if you want early boot messages. l. _______________________________________________ arm-netbook mailing list [email protected] http://lists.phcomp.co.uk/mailman/listinfo/arm-netbook Send large attachments to [email protected]
