On Wed, Feb 29, 2012 at 10:33:58AM -0800, Tim Bird wrote: > On 02/29/2012 10:14 AM, Jean-Christophe PLAGNIOL-VILLARD wrote: > > On 08:58 Wed 29 Feb , Stephen Warren wrote: > >> Jean-Christophe PLAGNIOL-VILLARD wrote at Wednesday, February 29, 2012 5:30 AM: > >>> On 17:03 Tue 28 Feb , Stephen Warren wrote: > >>>> uImage files typically encode a single absolute load and entry address. > >>>> This is inconvenient when attempting to share that uImage across multiple > >>>> SoCs with different physical RAM addresses. Recent versions of mkimage > >>>> implement a "kernel_noload" image type which encodes no absolute load > >>>> address, and a relative entry address. This works well for uImage-wrapped > >>>> ARM zImages, since they are relocatable. > >>>> > >>>> This is enabled by commit b9b50e89d317c58becd0e2d7fac2e21e3a81dd0a > >>>> "image: Implement IH_TYPE_KERNEL_NOLOAD" in U-Boot. > >>>> > >>>> Signed-off-by: Stephen Warren <swarren@xxxxxxxxxx> > >>>> --- > >>>> I assume I should put this into the ARM patch tracker if it's OK? > >>> > >>> Again a new option for uImage no why not just boot the zImage > >>> > >>> in this case the uImage is useless > >> > >> U-Boot doesn't support zImage at present. > >> > >> A patch was posted to support it at least for ARM, but needed a little > >> work before it could be committed. > > Sorry I see no advantage to have the uImage build by the kernel anymore as > > we have a relocatable zImage > > > > I'll even drop its support > > This seems at least premature, and possibly ill-advised in general. > There are lots of U-Boot images out in the field, many of which that > are rarely updated. A lot of workflow will be disrupted unnecessarily > by a change like this. > > Could you wait to drop uImage build support in the kernel until > U-Boot supports zImage, and has worked it's way into the field > for a few years? I admit I didn't check for a few years, but regarding that the values used to build the uImage from a zImage are (or at least were) quite bad, I'd say deprecate the uImage target today. Uwe -- Pengutronix e.K. | Uwe Kleine-König | Industrial Linux Solutions | http://www.pengutronix.de/ | -- 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
