Am 20.01.2017 um 18:18 schrieb Marek Vasut: > On 01/20/2017 05:45 PM, Frank Kunz wrote: > > Hi, > >> This patch adds common distribution boot environment variables for >> DE0-nanos-SoC board. It disables the watchdog enalbe in uboot since >> this is done by the OS. > > So if the board hangs in U-Boot, with this patch you're doomed.
Yes, this is a risk. An option could be to extend the watchdog timeout. I had the problem that the watchdog triggered during initrd rewrite on first boot of openSUSE. That remains the system in an un-bootable state. Currently the timeout is 30 seconds and I think it needs to be extended to minutes. > >> The MMC boot mode is switched to raw mode, which >> gets rid of the 0xa2 special partition. The SOC ROM loader scans for >> the SPL in the special partition (partition mode) and from MMC card >> sector 0 (raw mode), each for four valid SPLs. > > So all existing systems will be rendered unbootable if I apply this patch? In principle yes. The problem is the bootcmd variable, which is defined by the current code in a way that will not allow to boot a script. So far I had no better idea as change it. If you have an example or proposal how to handle that I will add this. > >> When a partition table is >> used with raw mode the first SPL must not be written to the MMC and the ROM >> loader uses the second SPL. > > btw if this patch does multiple things, it should be multiple patches, > but I'm not too keen on taking it unless the above stuff is sorted out. > btw please CC Dinh on Altera patches. Ok, I will split to separate patches and re-send to the list. Thanks for your feedback. Br, Frank _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
