On 01/11/2015 02:45 AM, Ian Campbell wrote:
On Sun, 2014-12-28 at 09:26 +0000, Ian Campbell wrote:
+boot_scripts:
- The name of U-Boot style boot.scr files that $bootcmd searches for.
- Example: boot.scr.uimg boot.scr
- (Typically we expect extlinux.conf to be used, but execution of boot.scr is
- maintained for backwards-compatibility.)
I'm slightly concerned by the implied deprecation of the boot.scr method here, since at least Debian uses boot.scr exclusively and not the extlinux stuff. Will boot.scr be maintained going forward or are there plans to eventually remove it?
Can someone confirm that there is no long term plan to drop boot.scr support?
extlinux.conf *is* the standard Linux boot process that config_distro_bootcmd.h enables. boot.scr is *not*. The whole point is to introduce a new simple standard that works the same everywhere (for Linux: across boards, across distros, across bootloaders).
I would expect boot.scr support to be maintained indefinitely for any board the currently supports it. I certainly know of no plan to remove any existing support for it, and am not going to make such a plan.
When adding support for config_distro_bootcmd.h to any board that doesn't support boot.scr already, I would not expect boards to want to start supporting boot.scr; it's a legacy method as far as config_distro_bootcmd.h is concerned.
(config_distro_bootcmd.h should be updated to make the boot.scr support optional, so it doesn't get enabled unless specifically requested, when boards add #include <config_distro_bootcmd.h>).
Supporting boot.scr may well be useful for a variety of non-Linux or legacy environments, so I'm not proposing anyone rip out support for it. Simply not add support for it if it hasn't been necessary already.