From: Tom Rini <trini@konsulko.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 2/3] igep00x0: consolidate defconfigs
Date: Wed, 21 Sep 2016 08:51:14 -0400 [thread overview]
Message-ID: <20160921125114.GC29602@bill-the-cat> (raw)
In-Reply-To: <CAFqH_51PjSvEsbfY9Kqi3iFg0zKffhvSqSh8jhdBL6vqrY0i+A@mail.gmail.com>
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 <ladis@linux-mips.org>:
> > 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
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next prev parent reply other threads:[~2016-09-21 12:51 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-20 9:04 [U-Boot] [PATCH 1/3] igep00x0: disable CONFIG_DISPLAY_BOARDINFO Ladislav Michl
2016-09-20 9:07 ` [U-Boot] [PATCH 2/3] igep00x0: consolidate defconfigs Ladislav Michl
2016-09-20 12:52 ` Tom Rini
2016-09-20 22:44 ` Ladislav Michl
2016-09-20 23:45 ` Tom Rini
2016-09-20 23:52 ` Ladislav Michl
2016-09-21 0:26 ` Tom Rini
2016-09-21 9:39 ` Ladislav Michl
2016-09-21 11:46 ` Enric Balletbo Serra
2016-09-21 12:51 ` Tom Rini [this message]
2016-09-21 13:46 ` Enric Balletbo Serra
2016-09-21 14:02 ` Tom Rini
2016-09-22 5:12 ` Ladislav Michl
2016-09-20 9:09 ` [U-Boot] [PATCH 3/3] igep00x0: add Hynix timings Ladislav Michl
2016-09-20 15:41 ` [U-Boot] [PATCH 1/3] igep00x0: disable CONFIG_DISPLAY_BOARDINFO Enric Balletbo Serra
2016-09-20 23:10 ` Ladislav Michl
2016-11-04 11:47 ` Ladislav Michl
2016-11-04 11:55 ` [U-Boot] [PATCHv2 " Ladislav Michl
[not found] ` <ef3936d3-3967-bc71-4fdc-7a78b12a3c45@osg.samsung.com>
2016-11-04 17:21 ` Ladislav Michl
2016-11-04 19:34 ` Javier Martinez Canillas
2016-11-04 19:36 ` Javier Martinez Canillas
2016-11-13 20:58 ` [U-Boot] [U-Boot, PATCHv2, " Tom Rini
2016-11-04 11:57 ` [U-Boot] [PATCHv2 2/3] igep00x0: consolidate defconfigs Ladislav Michl
2016-11-04 19:37 ` Javier Martinez Canillas
2016-11-13 20:58 ` [U-Boot] [U-Boot,PATCHv2,2/3] " Tom Rini
2016-11-04 11:59 ` [U-Boot] [PATCHv2 3/3] igep00x0: add Hynix timings Ladislav Michl
2016-11-04 19:39 ` Javier Martinez Canillas
2016-11-13 20:58 ` [U-Boot] [U-Boot,PATCHv2,3/3] " Tom Rini
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