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  1. 28 Jan, 2008 4 commits
  3. 21 Jan, 2008 1 commit
  5. 23 Dec, 2007 2 commits
    • Stefan Roese's avatar
      [POWERPC] 4xx: Fix TLB 0 problem with CONFIG_SERIAL_TEXT_DEBUG · f4151b9b
      Stefan Roese authored 
      
Right now TLB entry 0 ist used as UART0 mapping for the early debug
output (via CONFIG_SERIAL_TEXT_DEBUG). This causes problems when many
TLB's get used upon Linux bootup (e.g. while PCIe scanning behind
bridges and/or switches on 440SPe platforms). This will overwrite the
TLB 0 entry and further debug output's may crash/hang the system.

This patch moves the early debug UART0 TLB entry from 0 to 62 as done
in arch/powerpc. This way it is in the "pinned" area and will not get
overwritten. Also the arch/ppc/mm/44x_mmu.c code is now synced with the
newer code from arch/powerpc.
Signed-off-by: default avatarStefan Roese <sr@denx.de>
Signed-off-by: default avatarJosh Boyer <jwboyer@linux.vnet.ibm.com>
      f4151b9b
    • Benjamin Herrenschmidt's avatar
      [POWERPC] Reworking machine check handling and Fix 440/440A · 47c0bd1a
      Benjamin Herrenschmidt authored 
      
This adds a cputable function pointer for the CPU-side machine
check handling. The semantic is still the same as the old one,
the one in ppc_md. overrides the one in cputable, though
ultimately we'll want to change that so the CPU gets first.

This removes CONFIG_440A which was a problem for multiplatform
kernels and instead fixes up the IVOR at runtime from a setup_cpu
function. The "A" version of the machine check also tweaks the
regs->trap value to differenciate the 2 versions at the C level.
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: default avatarJosh Boyer <jwboyer@linux.vnet.ibm.com>
      47c0bd1a
  7. 20 Dec, 2007 1 commit
  9. 23 Oct, 2007 1 commit
    • Grant Likely's avatar
      ppc: fix AT_VECTOR_SIZE on arch/ppc · 3650b0a3
      Grant Likely authored 
      Commit 4f9a58d7

 ("increase
AT_VECTOR_SIZE to terminate saved_auxv properly") changes the size of
AT_VECTOR_SIZE from hard coded '44' to a calculation based on the value
of AT_VECTOR_SIZE_ARCH and AT_VECTOR_SIZE_BASE.

The change works for arch/powerpc, but it breaks arch/ppc because the
needed AT_VECTOR_SIZE_ARCH is not present in include/asm-ppc/system.h
and a default value of 0 is used instead.  This results in
AT_VECTOR_SIZE being too small and it causes a kernel crash on loading
init.
Signed-off-by: default avatarGrant Likely <grant.likely@secretlab.ca>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      3650b0a3
  11. 19 Oct, 2007 1 commit
  13. 18 Oct, 2007 1 commit
  15. 17 Oct, 2007 3 commits
  17. 16 Oct, 2007 1 commit
  19. 22 Sep, 2007 1 commit
  21. 17 Sep, 2007 1 commit
  23. 14 Sep, 2007 1 commit
  25. 23 Aug, 2007 1 commit
  27. 17 Aug, 2007 1 commit
  29. 24 Jul, 2007 2 commits
  31. 22 Jul, 2007 1 commit
  33. 19 Jul, 2007 1 commit
  35. 17 Jul, 2007 1 commit
  37. 16 Jul, 2007 1 commit
  39. 11 Jul, 2007 2 commits
  41. 29 Jun, 2007 5 commits
  43. 16 Jun, 2007 1 commit
  45. 10 May, 2007 2 commits
    • Kumar Gala's avatar
      [POWERPC] User rheap from arch/powerpc/lib · b99ab6a8
      Kumar Gala authored 
      
Removed rheap in arch/ppc/lib and changed build system to use the
one in arch/powerpc/lib.
Signed-off-by: default avatarKumar Gala <galak@kernel.crashing.org>
      b99ab6a8
    • Timur Tabi's avatar
      [POWERPC] Change rheap functions to use ulongs instead of pointers · 4c35630c
      Timur Tabi authored 
      
The rheap allocation functions return a pointer, but the actual value is based
on how the heap was initialized, and so it can be anything, e.g. an offset
into a buffer.  A ulong is a better representation of the value returned by
the allocation functions.

This patch changes all of the relevant rheap functions to use a unsigned long
integers instead of a pointer.  In case of an error, the value returned is
a negative error code that has been cast to an unsigned long.  The caller can
use the IS_ERR_VALUE() macro to check for this.

All code which calls the rheap functions is updated accordingly.  Macros
IS_MURAM_ERR() and IS_DPERR(), have been deleted in favor of IS_ERR_VALUE().

Also added error checking to rh_attach_region().
Signed-off-by: default avatarTimur Tabi <timur@freescale.com>
Signed-off-by: default avatarKumar Gala <galak@kernel.crashing.org>
      4c35630c
  47. 09 May, 2007 1 commit
  49. 08 May, 2007 3 commits