Rob, I'm looking into enabling CONFIG_MULTIPLATFORM on Tegra for 3.10, and the main blocking issue is due to commit 62e4d35 "ARM: 7609/1: disable errata work-arounds which access secure registers". Various Tegra versions need 3 of those workarounds, and our bootloader doesn't implement them (at the least, upstream U-Boot; not sure about our downstream code, but I'm fairly sure given the lack of any feedback I got in the bug I filed to implement them). Now, I can easily add those 3 errata workarounds to U-Boot, but that will require people to reflash their bootloader. This is probably acceptable for development/reference boards (although I'm sure people will find it annoying) but for re-purposed production boards (such as the Toshiba AC100 or various tablets) it will be impossible to update the factory bootloader. Switching to upstream U-Boot would currently lose some functionality, and significantly affect people's boot flow, so is likely unacceptable. Is there any other alternative I'm not seeing? Having the kernel suddenly become incompatible with any currently extant bootloader when I enable CONFIG_MULTIPLATFORM doesn't seem like a great idea. -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
