Hi Manu On Tue, 2023-05-09 at 09:49 +0000, Traut Manuel LCPF-CH wrote: > Hi Marc, > > Thanks for your quick reply. > > > > I am not sure if I built/using u-boot as intended for this platform. > > > > I would advice to stick to the documentation [1]. > > Thanks for the reference.
You are very welcome. > > > 1) running via serial download: > > > Please note that we never integrated/validated USB device support on > > > Verdin iMX8M Mini (and Plus for that > > > matter). So one really can NOT use UUU with upstream U-Boot so far and > > > does have to stick to what we > > > document. > > Thanks for the clarification. I am aware of this and added this just for > reference to see that generally the > SPL seems to work. > I worked on this a couple of months ago [3] - however the base-address of the > controller needs to be > retrieved somehow in the probe function. Here it was just hardcoded. Okay, I haven't played with that upstream yet. But I should! > > > 2) running from SDCard: > > > > As all our SoMs are factory fused to boot from their on-module eMMC storage > > one can NOT boot them from an > > SD card. > > Thanks for the information. I thought SDCard boot might work, cause of the > following found in [4] > --8<-- > Important: make sure that there is no bootable SD card plugged into the slot. > Otherwise, the > module will try to boot from the external SD card instead of going into the > USB serial loader. > --8<-- I believe this reference refers to what NXP calls manufacturer boot which only applies to non-fused modules. As regular modules are always factory fused this does not really apply. However, I guess a customer could potentially order non-fused ones as part of a build-to-order (BTO) or something so to be on the safe side we added that note. > > > 3) running from eMMC: > > > > Please stick to the documentation and skip 2 blocks when writing to the > > first hardware area boot partition. > > Thanks - this helps. However it seems that the SPL build with the defconfig > expects the 2nd stage u-boot from > mmc 1 instead of 0 > --8<-- > U-Boot SPL 2023.04+dfsg-1+iris+manut4 (May 03 2023 - 12:16:03 +0000) > WDT: Started watchdog@30280000 with servicing every 1000ms (60s timeout) > Trying to boot from MMC1 > --8<-- > Guess I get this fixed on my own. No, I believe your issue lays with TF-A. However, I just checked and latest master does really work for meTM (;-p). U-Boot SPL 2023.07-rc2-00084-g177e506952a (May 15 2023 - 12:09:06 +0200) WDT: Started watchdog@30280000 with servicing every 1000ms (60s timeout) Trying to boot from MMC1 NOTICE: Do not release JR0 to NS as it can be used by HAB NOTICE: BL31: v2.8(release):v2.9-rc0 NOTICE: BL31: Built : 12:08:36, May 15 2023 U-Boot 2023.07-rc2-00084-g177e506952a (May 15 2023 - 12:09:06 +0200) CPU: Freescale i.MX8MMQ rev1.0 1600 MHz (running at 1200 MHz) CPU: Industrial temperature grade (-40C to 105C) at 49C Reset cause: POR DRAM: 2 GiB Core: 147 devices, 24 uclasses, devicetree: separate WDT: Started watchdog@30280000 with servicing every 1000ms (60s timeout) MMC: FSL_SDHC: 0, FSL_SDHC: 1, FSL_SDHC: 2 Loading Environment from MMC... OK In: serial@30860000 Out: serial@30860000 Err: serial@30860000 Model: Toradex 0055 Verdin iMX8M Mini Quad 2GB WB IT V1.1A Serial#: 06827787 Carrier: Toradex Verdin Development Board V1.1A, Serial# 10807609 Setting variant to wifi Net: eth0: ethernet@30be0000 Hit any key to stop autoboot: 0 Verdin iMX8MM # Good luck! > > If anything goes wrong the boot ROM usually falls back to serial download > > mode. There are ways to look at > > what exactly you may have done wrong see e.g. [2].[Traut Manuel LCPF-CH] > > Oh, this really eases debugging. Thanks for the reference! You are very welcome. > Thanks > Manuel > > [1] > https://source.denx.de/u-boot/u-boot/-/blob/master/doc/board/toradex/verdin-imx8mm.rst > [2] https://www.nxp.com/webapp/Download?colCode=AN12853 > [3] https://www.mail-archive.com/[email protected]/msg437039.html > [4] https://docs.toradex.com/108681-verdin-imx8m-mini-datasheet-v1.1 Best regards - Mit freundlichen Grüssen - Meilleures salutations Marcel Ziswiler Software Team Lead - Embedded Linux BSP Toradex AG Ebenaustrasse 10 | 6048 Horw/Luzern | Switzerland | T: +41 41 500 4800
