Scott, after uploading a new kernel with different size than our usual one I now get either machine check during gunzip or gunzip fails with -3 on my MPC8343 based MVBLM7 board.
Looks like you have already identified this problem in the past ... Having a look a at my board config (MVBLM7.h) "git blame" tells me you have already added BATL_GUARDEDSTORAGE to the IBAT6 entry. I wonder if the BATL_MEMCOHERENCE makes any difference, since it is not present on MPC8313ERDB. When using an uncompressed kernel everything works fine - the issue is clearly related to gunzip/inflate. Any hints ? Regards, André [snip] > > The root cause of this has been found, did you see this: > > It's a CPU memory cache problem (I could have known). > > details: > Scott Wood wrote: > > This board currently sets DBAT6 to cover all of the final 256MiB of > > address space; however, not all of this space is covered by a device. In > > particular, flash sits at 0xfe000000-0xfe7fffff, and nothing is mapped > > at the far end of the address space. > > > > In zlib, there is a loop that references p[-1] if p is non-NULL. Under > > some circumstances, this leads to the CPU speculatively loading from > > 0xfffffff8 if p is NULL. This leads to a machine check. > > > > Signed-off-by: Scott Wood <[email protected]> > > --- > > Note that there are likely other board with the same issue. > > > > include/configs/MPC8313ERDB.h | 2 +- > > 1 files changed, 1 insertions(+), 1 deletions(-) > > > > diff --git a/include/configs/MPC8313ERDB.h b/include/configs/MPC8313ERDB.h > > index 0ef4eba..21aedee 100644 > > --- a/include/configs/MPC8313ERDB.h > > +++ b/include/configs/MPC8313ERDB.h > > @@ -544,7 +544,7 @@ > > #define CONFIG_SYS_IBAT5U (CONFIG_SYS_IMMR | BATU_BL_256M | BATU_VS | > BATU_VP) > > > > /* SDRAM @ 0xF0000000, stack in DCACHE 0xFDF00000 & FLASH @ 0xFE000000 */ > > -#define CONFIG_SYS_IBAT6L (0xF0000000 | BATL_PP_10) > > +#define CONFIG_SYS_IBAT6L (0xF0000000 | BATL_PP_10 | > BATL_GUARDEDSTORAGE) > > #define CONFIG_SYS_IBAT6U (0xF0000000 | BATU_BL_256M | BATU_VS | > BATU_VP) > > > > #define CONFIG_SYS_IBAT7L (0) MATRIX VISION GmbH, Talstrasse 16, DE-71570 Oppenweiler Registergericht: Amtsgericht Stuttgart, HRB 271090 Geschaeftsfuehrer: Gerhard Thullner, Werner Armingeon, Uwe Furtner, Hans-Joachim Reich _______________________________________________ U-Boot mailing list [email protected] http://lists.denx.de/mailman/listinfo/u-boot
