[U-Boot] [PATCH V3 0/11] ARM: OMAP3-DRA7: CP15 erratum workarounds and improvements

Tom Rini
2015-03-02T21:16:08Z

On Thu, Feb 26, 2015 at 06:14:25PM +0200, Siarhei Siamashka wrote:
> On Thu, 26 Feb 2015 08:50:09 -0600
> Nishanth Menon <nm@ti.com> wrote:
>
> > On Thu, Feb 26, 2015 at 1:40 AM, Siarhei Siamashka
> > <siarhei.siamashka@gmail.com> wrote:
> > > On Wed, 25 Feb 2015 14:55:08 -0600
> > > Nishanth Menon <nm@ti.com> wrote:
> > >
> > >> Hi,
> > >>
> > >> The third incarnation of this series to address various ideas of
> > >> previous V2 series. I will skip the full blurb and point to V1/V2
> > >> links for the usual blurb.
> > >>
> > >> Changes since V2:
> > >> - Added documentation revisioning info with ARM erratums
> > >> - patch series are split up to address ARM erratums first followed by TI
> > >> OMAP conversion
> > >> - More OMAP3 now get erratum implementation - had to redo rx51 a little
> > >> - I think is better helps exynos: https://patchwork.ozlabs.org/patch/443271/
> > >> https://patchwork.ozlabs.org/patch/441863/
> > >> - Rearranged the series to address generic ARM first followed by rest.
> > >>
> > >> V2: http://comments.gmane.org/gmane.comp.boot-loaders.u-boot/213060
> > >> V1: http://comments.gmane.org/gmane.comp.boot-loaders.u-boot/212174
> > >>
> > >> Nishanth Menon (10):
> > >> ARM: Introduce erratum workaround for 798870
> > >> ARM: Introduce erratum workaround for 454179
> > >> ARM: Introduce erratum workaround for 430973
> > >> ARM: Introduce erratum workaround for 621766
> > >> ARM: OMAP: Change set_pl310_ctrl_reg to be generic
> > >> ARM: OMAP3: Rename omap3.h to omap.h to be generic as all SoCs
> > >> ARM: OMAP3: Get rid of omap3_gp_romcode_call and replace with
> > >> omap_smc1
> > >> ARM: OMAP5 / DRA7: Setup L2 Aux Control Register with recommended
> > >> configuration
> > >> ARM: OMAP3: Enable workaround for ARM errata 454179, 430973, 621766
> > >> ARM: OMAP3: rx51: Enable workaround for ARM errata 454179, 430973,
> > >> 621766
> > >>
> > >> Praveen Rao (1):
> > >> ARM: DRA7 / OMAP5: Add workaround for ARM errata 798870
> > >
> > > Could you perhaps also pick up a workaround for "725233: PLD
> > > instructions executed with PLD data forwarding enabled can result
> > > in a processor deadlock" for old OMAP3 (r1pX revision of Cortex-A8)?
> > >
> > > http://git.denx.de/?p=u-boot.git;a=commitdiff;h=041d42e789aba20296ffcde92173f100a9592880
> > >
> > > This used to be in U-Boot earlier, but seems to have vanished from the
> > > current U-Boot code. I would probably submit a patch myself, but I
> > > don't have such hardware anymore to test it.
> >
> > Could I have a review by - I think I screwed up r1-r3 handling in
> > start.S when multiple erratas are enabled - which by some luck, I
> > have'nt hit.. I should probably fix that.
>
> Sadly, I don't have this old hardware anymore. I have lent my first
> generation beagleboard to another person several years ago and have no
> idea where it is now. Maybe I should try to get it back one day :)
>
> But taking the "formal" route, I checked who is the current beagleboard
> maintainer and looks like that's Tom Rini, who is already quite
> conveniently in the CC ;-)
>
> Basically, this old hardware is either maintained or not. If it is
> maintained, then probably the board maintainer is the best person to
> review and test the errata patches.

Picking up again, I have original Beagleboards but I need a testcase.
Is it as simple as "Linux still boots to login on serial and doesn't
segfault everywhere" ?

--
Tom
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