On Sun, Feb 26, 2017 at 04:29:32PM +0100, Albert ARIBAUD wrote: > The switch to private LIBGCC causes 'undefined instruction' > exception in at least the Open-RD Ultimate and Client, and > quite probably the Open-RD Base as well. > > While debugging this issue, it appeared the switch to > architecture-optimized memset and memcpy also causes the > same exceptions. > > Until a fix to private libgcc and architecture-optimized > memcpy and memset is mainlined, disable their use in all > openrd configurations. > > Signed-off-by: Albert ARIBAUD <[email protected]>
Implementation wise, there's two big problems here. First, all of the code we're talking about is a direct drop-in from the kernel. So whatever is wrong here is a problem that the kernel itself can trigger, so needs sorting out and fixing. Second, do you have more details on how to recreate (or not recreate) these problems? > --- > > configs/openrd_base_defconfig | 4 ++++ > configs/openrd_client_defconfig | 4 ++++ > configs/openrd_ultimate_defconfig | 4 ++++ > 3 files changed, 12 insertions(+) > > diff --git a/configs/openrd_base_defconfig b/configs/openrd_base_defconfig > index 067ddbc5cc..4b8c51a771 100644 > --- a/configs/openrd_base_defconfig > +++ b/configs/openrd_base_defconfig > @@ -21,3 +21,7 @@ CONFIG_SYS_NS16550=y > CONFIG_USB=y > CONFIG_USB_STORAGE=y > CONFIG_OF_LIBFDT=y > +# Private memcpy, memset and libgcc cause undefined instruction exceptions > +CONFIG_USE_ARCH_MEMSET=n > +CONFIG_USE_ARCH_MEMCPY=n > +CONFIG_USE_PRIVATE_LIBGCC=n > diff --git a/configs/openrd_client_defconfig b/configs/openrd_client_defconfig > index b90ead158f..04f243a57b 100644 > --- a/configs/openrd_client_defconfig > +++ b/configs/openrd_client_defconfig > @@ -21,3 +21,7 @@ CONFIG_SYS_NS16550=y > CONFIG_USB=y > CONFIG_USB_STORAGE=y > CONFIG_OF_LIBFDT=y > +# Private memcpy, memset and libgcc cause undefined instruction exceptions > +CONFIG_USE_ARCH_MEMSET=n > +CONFIG_USE_ARCH_MEMCPY=n > +CONFIG_USE_PRIVATE_LIBGCC=n > diff --git a/configs/openrd_ultimate_defconfig > b/configs/openrd_ultimate_defconfig > index 2bc8ace8d0..c8d4c3176f 100644 > --- a/configs/openrd_ultimate_defconfig > +++ b/configs/openrd_ultimate_defconfig > @@ -21,3 +21,7 @@ CONFIG_SYS_NS16550=y > CONFIG_USB=y > CONFIG_USB_STORAGE=y > CONFIG_OF_LIBFDT=y > +# Private memcpy, memset and libgcc cause undefined instruction exceptions > +CONFIG_USE_ARCH_MEMSET=n > +CONFIG_USE_ARCH_MEMCPY=n > +CONFIG_USE_PRIVATE_LIBGCC=n Content-wise, this is wrong. Please run them past 'savedefconfig'. Thanks! -- Tom
signature.asc
Description: Digital signature
_______________________________________________ U-Boot mailing list [email protected] http://lists.denx.de/mailman/listinfo/u-boot

