2015-05-22 0:01 GMT+02:00 Andreas Färber <afaerber@xxxxxxx>: > Am 21.05.2015 um 21:57 schrieb Maxime Coquelin: >> Note that for now, I still use your bootloader. >> I have done the changes to reset the timers in the afboot-stm32. >> That's the reason why I asked you under which licence it is delivered >> few months ago. > > Sorry, too many mails... The stm32 one is GPL-2.0, as parts of it were > derived from a U-Boot fork. (Personally I prefer GPL-2.0+; fm4 and > xmc4000 are MIT/X11.) Not a problem, thanks for providing the licence. >> I can share you the patch if you want, even if I understand it is more >> about the concept that you are reluctant. >> >> On my side, I plan to move to U-Boot soon, as Kamil Lulko added STM32 >> support in mainline [1]. > > You're free to use any bootloader you like, but you will find it > difficult to build in USB etc. drivers given the sheer size of U-Boot. > That was my motivation for writing the tiny one. ;) I think the two bootloaders make sense. Indeed, using U-Boot restricts the size of the Kernel. I also have the stm32429i-eval board, with 32MB NOR and 32MB SD-Ram. At least on this one I will use U-Boot, as tftp could be used to load Kernel since it has Ethernet port. >> In case of U-Boot, the timer reset should be de-asserted when jumping >> into the Kernel, as Rob mentionned [0]. > > Thanks, I've updated the xmc4000 one accordingly and can do the same for > stm32. But you are right that I consider that an ugly workaround, > although on the other hand my earlyprintk patches also depend on the > bootloader setting up GPIOs and UART. Yes, the Kernel always need to rely on the bootloader to provide a minimal setup (clock/ddr/muxing...). Regards, Maxime -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
