[PATCH 0/4] ppc: memory layout and memtest

[Renaud Barbier]

This patchset updates the PPC memory layout and memtest:

 - Memory regions on PPC are redefined to prevent corruption of critical memory
   areas while running the memtest.

 - To support the memory test framework with cache disabled, a TLB remapping
   function is added for the memtest to enable/disable caching on a mapped
   memory region.

 - To prevent memtest failure, the memory test is updated to exclude memory
   region at the bank start.

Finally, the configuration files are updated for the DA923RC and P2020RDB.

Renaud Barbier (4):
  ppc: fix memory layout to prevent corruption during memtest
  ppc: add support for memtest with cache disabled
  memtest: exclude page starting at address 0.
  ppc: P2020RDB and DA923RC configuration

 arch/ppc/configs/da923rc_defconfig       |    2 +
 arch/ppc/configs/p2020rdb_defconfig      |    2 +
 arch/ppc/cpu-85xx/Makefile               |    1 +
 arch/ppc/cpu-85xx/mmu.c                  |   54 ++++++++++++++++++++++++++++++
 arch/ppc/cpu-85xx/start.S                |    3 --
 arch/ppc/cpu-85xx/tlb.c                  |   17 +++++++++-
 arch/ppc/include/asm/mmu.h               |    6 +++
 arch/ppc/lib/board.c                     |    6 +---
 arch/ppc/mach-mpc85xx/Kconfig            |    3 ++
 arch/ppc/mach-mpc85xx/barebox.lds.S      |    8 +++--
 arch/ppc/mach-mpc85xx/include/mach/mmu.h |    5 +++
 commands/memtest.c                       |   10 +++---
 include/asm-generic/memory_layout.h      |    4 ++
 13 files changed, 104 insertions(+), 17 deletions(-)
 create mode 100644 arch/ppc/cpu-85xx/mmu.c