>>>>> "Jason" == Jason Gunthorpe <jgunthorpe@xxxxxxxxxxxxxxxxxxxx> writes: Hi, Jason> We've been using DT on production embedded stuff sice about 2.6.20ish Jason> on PPC and now ARM. We treat the dtb as a kernel version specific Jason> file, much like an initrd and ensure that the kernel only ever boots Jason> with its proper dtb. This is based on experience that the dtbs change Jason> depending on the state of the drivers in the kernel, what gets Jason> mainlined and when, etc. Jason> Embedding this stuff into the bootloader is *not* desirable for my Jason> embedded scenarios. We don't use FIT (or uboot) but we do the same Jason> thing: a single image is constructed with the proper dtb, kernel and Jason> initrd, and that is what the bootloader boots. Jason> Why? This is an embedded appliance product. We need to be able to Jason> deliver firmware upgrades that *work*. We can't brick the board Jason> because the bootloader and kernel get out of sync. The boot loader has Jason> to be *simple*, it has to boot every past, present and future kernel Jason> or we start taking risks that a firmware flash will end up bricking Jason> it. I'm having the exact same experience (and handle it in the same way). I know this was not the intention of DT, but unfortunately this is how things have turned out so far. -- Bye, Peter Korsgaard -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
