> On Nov 4, 2019, at 11:11 AM, Adrian Bunk <b...@stusta.de> wrote: > > On Mon, Nov 04, 2019 at 10:48:57AM -0500, Steve Pavao wrote: >> >>> On Nov 3, 2019, at 1:25 PM, Adrian Bunk <b...@stusta.de> wrote: >>> >>> On Sun, Nov 03, 2019 at 05:56:45PM +0000, Andrei Gherzan wrote: >>>> On 3 November 2019 13:18:53 GMT, Khem Raj <raj.k...@gmail.com> wrote: >>>>> On Sun, Nov 3, 2019 at 2:46 AM Andrei Gherzan <and...@gherzan.ro> >>>>> wrote: >>>>>> I was thinking about this. The erratum seems to show that this >>>>> applies >>>>>> to all revisions of a53. So it sounds like we should add it in >>>>>> `tune-cortexa53.inc`. >>>>>> >>>>> >>>>> Up to r0b4 only so maybe not all a53 implementations are impacted >>>>> >>>> >>>> As far as I know that is the latest revision. Do you mean that newer >>>> revision might come up with this fixed? >>> >>> It is fixed in some r0p4 implementations, indicated in REVIDR[8]. >> >> I am closer to understanding why I experience an error when building with >> the ARM errata switches. >> >> I believe it is related to 32-bit app support in my poky Linux 64-bit build >> (I add this to support vcgencmd and vcdbg 32-bit apps.) >> >> When I remove the 32-bit support, the build completes OK. As of now, adding >> the following seems to work fine to acheive this: >> >> TARGET_CC_ARCH_append += " -mfix-cortex-a53-843419 -mfix-cortex-a53-835769” >> >> Something in the following block seems to be the culprit.: >> >> # for vcgencmd and vcdbg 32-bit executable support in the OS image (comment >> out for -c populate_sdk) >> require conf/multilib.conf >> MULTILIBS = "multilib:lib32" >> DEFAULTTUNE_virtclass-multilib-lib32 = "armv7a" >> IMAGE_INSTALL_append += " vcgencmd lib32-glibc lib32-libgcc lib32-libstdc++ >> vcdbg rpi-setup \ >> “ >> >> I will post again when I have localized the build problem further. Maybe >> there’s some 64-bit vs. 32-bit build confusion going on, and the armv7a >> default tune switch for 32-bits is colliding with the errata switches. > > The errata switches are only valid for aarch64, not for armv7a. > There is likely some kind of "invalid option" earlier in your build.
To conitnue to be able to use the 32-bit app support, perhaps I must do this: DEFAULTTUNE_virtclass-multilib-lib32 = “armv7a -mno-fix-cortex-a53-843419 -mno-fix-cortex-a53-835769” I’ll give it a try. - Steve Pavao Korg R&D
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