On Wed, Sep 21, 2016 at 01:46:51PM +0200, Enric Balletbo Serra wrote: > Hi, > > 2016-09-21 11:39 GMT+02:00 Ladislav Michl <[email protected]>: > > On Tue, Sep 20, 2016 at 08:26:36PM -0400, Tom Rini wrote: > >> On Wed, Sep 21, 2016 at 01:52:21AM +0200, Ladislav Michl wrote: > >> > On Tue, Sep 20, 2016 at 07:45:14PM -0400, Tom Rini wrote: > > [snip] > >> > > But why do we even need to set MACH_TYPE these days? > >> > > >> > That's only needed for non-device tree kernel boot. These boards run > >> > mostly > >> > vendor provided kernels based on TI 2.6.32 or 2.6.37 kernel tree with > >> > daughter boards specific patches on top of it. Enric is concerned not > >> > to break that support, so I'm trying to keep it. > >> > >> OK, if you're still supporting stuff that old then yes, it makes sense. > >> And we can't get this right at run time? > > > > I asked several times, if there's a way to differentiate those boards > > (0020, 0030 and 0032) at runtime, but never get an answer. Of course > > I'd like to see one U-Boot binary to rule them all, but I'm out of clue > > there. Few people added to Cc... > > There is no way to differentiate those boards at runtime, those boards > are completely different platforms that share same processor, like > BeagleBoard or OMAP3 Overos . For me what you're trying to do is join > different platforms with the same processor, so why not join > BeagleBone, Overos, and IGEPs and all other OMAP3 based platforms?
Note that the different beagleboard used GPIOs to tell which platform is which :) > > Another approach might be to configure U-Boot using FDT and translate > > that information into MACH_TYPE and kernel command line to support > > non-device tree enabled kernels. > > That is what I would like to see someday ;) All OMAP3 based boards > sharing the same binary and configure U-Boot using FDT. The probably trickiest part here is DDR config, which still punts things down to a board specific MLO. But within an SoC this is probably a lot closer than people might think. -- Tom
signature.asc
Description: Digital signature
_______________________________________________ U-Boot mailing list [email protected] http://lists.denx.de/mailman/listinfo/u-boot
